Fire-fighting water tank and substation fine water mist fire extinguishing system for preventing water invasion failure

Abstract

The application discloses a fire-fighting water tank and a substation fine water mist fire extinguishing system capable of preventing water invasion failure, comprising two water storages, a water regulating frame and water level meters, wherein the water regulating frame is provided with a connecting channel, both ends of the connecting channel are connected with water storage bags, the two water storage bags are respectively arranged in the two water storages, any water storage bag can extend to the other water storage bag along the connecting channel, water level meters are arranged on the two water storages, the two water storages are connected through pipelines, and water pumps are arranged on the pipelines. In the application, the water storage bags are indirectly stored in the leaking water storages, which effectively prevents the continuous leakage of water, realizes the in-situ storage of water without occupying other space, and avoids the occurrence of water invasion accidents of electrical equipment caused by leakage.

Description

Technical Field

[0001] This invention relates to the field of fire protection technology, and more specifically to a fire water tank and a fine water mist fire extinguishing system for substations that prevents water intrusion. Background Technology

[0002] Given the crucial role of substations in the entire power sector, fire prevention is of paramount importance. Currently, the most commonly used fire suppression methods in substations include heptafluoropropane fire suppression systems, carbon dioxide fire suppression systems, and water mist fire suppression systems.

[0003] This device system uses water as a medium. After installation, it can spray water mist under certain high pressure conditions. The mist particles move in three dimensions in space in a high-speed turbulent and rotating manner. After being sprayed out, they are fully entrained, broken, and atomized with the outside air to produce high-speed, uniform fine water mist with a very small diameter. In the event of a fire, it can quickly spray fine water mist onto the protected object or space to extinguish, suppress, control, regulate temperature, and reduce dust.

[0004] Patent document CN111408086A discloses a substation fire inspection and extinguishing system and its extinguishing method, including an autonomous positioning, navigation, and obstacle avoidance unit, a fine water mist extinguishing unit, a walking control unit, a sensor control unit, and a power supply unit. The system conducts regular patrols of a predetermined area and scans the surrounding environment using an infrared dual-view thermal imaging module. Upon detecting a fire, the main control module issues an alarm signal and analyzes the image data to determine the fire area and the area with the highest temperature. If the maximum distance between the fire source area and the boundary of the fire area is less than or equal to 1 meter, priority fire source extinguishing is implemented; if the maximum distance is greater than 1 meter, priority fire spread prevention extinguishing is implemented, followed by priority fire source extinguishing. When the surface temperature of an object reaches 30°C to 100°C, extinguishing in that area is stopped. After extinguishing the fire, the system continues patrolling. Through these settings, it achieves extremely high extinguishing efficiency and does not cause secondary damage to electronic equipment during the extinguishing process.

[0005] However, in actual operation, malfunctions in the fine water mist fire extinguishing system itself can easily lead to the risk of power outages in electrical equipment. For example, if the float ball of the inlet control valve of the fine water mist tank falls off, it can cause the automatic shut-off function of the inlet control valve to fail. Since the water inlet of the tank is supplied by the fire water source, the fire pump cannot discharge the overflow in time due to the inlet flow rate being greater than the drainage flow rate, which can eventually lead to water intrusion into electrical equipment. In addition, when the water tank itself leaks, it can also easily cause water intrusion into electrical equipment. Summary of the Invention

[0006] The technical problem to be solved by this invention is how to avoid water intrusion accidents of electrical equipment caused by its own faults such as leakage or failure of water replenishment function.

[0007] The present invention solves the above-mentioned technical problems through the following technical means: a fire water tank for preventing water intrusion failure, comprising two water tanks, a water regulating frame, and a water level gauge. The water regulating frame is provided with a connecting channel, and both ends of the connecting channel are connected to water storage bags. The two water storage bags are respectively located in the two water tanks, and any one of the water storage bags can extend along the connecting channel into the other water storage bag. The two water tanks are each provided with a water level gauge, and the two water tanks are connected by a pipeline, on which a water pump is provided.

[0008] As a preferred technical solution, the water regulating frame is also provided with a diversion channel. One end of the diversion channel is connected to the connecting channel, and the other end extends away from the water tank, with the end face being open.

[0009] As a preferred technical solution, the water regulating frame is provided with a through water guide hole, which forms the connecting channel. The end face of the water guide hole is fixedly connected to the mouth of the two water storage bags, so that the water storage bags and the connecting channel form a closed cavity structure.

[0010] As a preferred technical solution, there are two connecting channels and two diversion channels, with the two diversion channels located at both ends of the water regulating frame and connected to one of the connecting channels respectively.

[0011] As a preferred technical solution, the water regulating frame and the water tank are detachably fixed, and the connection surface between the water regulating frame and the water tank is provided with a sealing element.

[0012] As a preferred technical solution, the water regulating frame is vertically fixed between the two water tanks, a sealing gasket is provided between the connection surfaces of the water tanks and the water regulating frame, and a sealing strip is provided between the two water tanks.

[0013] As a preferred technical solution, the water regulating frame includes a horizontal column and a clamping frame. A clamping frame is fitted at both ends of the horizontal column. The clamping frame is connected and fastened to the end of the horizontal column by a screw, so that the clamping frame abuts against the outer wall of the water tank.

[0014] As a preferred technical solution, the end of the water tank connected to the water regulating frame is provided with a horizontal opening that is adapted to it.

[0015] This invention also provides a substation fine water mist fire extinguishing system including the aforementioned fire water tank for preventing water intrusion, comprising a pressurized water tank, a solenoid valve, a PLC controller and / or a remote industrial control computer, a fine water mist pump assembly, and a camera. The camera is located outside the fire water tank and the fine water mist pump assembly. The pressurized water tank and the fine water mist pump assembly are connected upstream and downstream of the fire water tank respectively via connecting pipes. A flow sensor is installed on the connecting pipe. A solenoid valve is also installed on the connecting pipe between the fire water tank and the pressurized water tank. The PLC controller and / or the remote industrial control computer are electrically or communicatively connected to the water level gauge, the solenoid valve, and the flow controller.

[0016] As a preferred technical solution, the mode switching controller, the data acquisition and output module, the PLC controller and / or the remote industrial computer are electrically connected to the data acquisition and output module and the mode switching controller, the mode switching controller is electrically connected to the solenoid valve, and the data acquisition and output module is electrically connected to the flow sensor.

[0017] The beneficial effects of this invention are as follows:

[0018] (1) In this invention, by setting up two water tanks, when there is a leak in one water tank, the water in it is input into another intact water tank. Since the water volume exceeds the capacity of the water tank, the water pressure will drive the water storage bag on the water regulating rack to flip over and extend into the water storage bag in the leaking water tank. At this time, the excess water will be put into the flipped water storage bag and indirectly stored in the leaking water tank through the water storage bag. This effectively prevents the water from continuing to leak, and at the same time, it achieves in-situ storage of water without occupying other space, thus avoiding the occurrence of water intrusion accidents on electrical equipment caused by leakage.

[0019] (2) In this invention, by setting up a diversion channel and connecting it with the connecting channel, when the external water supply is shut off, when the inflow rate in the water tank is greater than the outflow rate, under the action of water pressure, the water storage bag on the water regulating rack will be squeezed to the outside along the diversion channel. At this time, the excess water in the water tank is also stored in the water storage bag and hung to the outside, thereby providing additional storage space for the water overflowing from the water tank, effectively slowing down the process of water invading electrical equipment, providing valuable time for personnel to deal with it in a timely manner, and also playing a direct warning role.

[0020] (3) In this invention, the PLC controller and the remote industrial control computer are electrically connected to the acquisition output module and the mode switching controller, which serve as backups for each other. This reduces the failure of the water replenishment function to be turned on or off due to circuit control failure in a single control mode, and further improves the water storage and overflow prevention effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure provided in Embodiment 1 of the present invention;

[0022] Figure 2 This is a three-dimensional structural schematic diagram provided in Embodiment 1 of the present invention;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the fire water tank provided in Embodiment 1 of the present invention;

[0024] Figure 4 This is a schematic diagram of the exploded structure of a fire water tank provided in Embodiment 1 of the present invention;

[0025] Figure 5This is a schematic diagram of the exploded structure of a fire water tank provided in Embodiment 1 of the present invention;

[0026] Figure 6 This is a schematic diagram of the exploded structure of the water regulating frame provided in Embodiment 1 of the present invention;

[0027] Figure 7 This is a schematic diagram of the installation of the water storage bag provided in Embodiment 1 of the present invention;

[0028] Figure 8 Provided for Embodiment 1 of the present invention Figure 7 A partially enlarged structural diagram;

[0029] Figure 9 This is a top view of the water tank structure provided in Embodiment 1 of the present invention;

[0030] Figure 10 This is a schematic diagram of the cross-sectional structure of the water tank provided in Embodiment 1 of the present invention;

[0031] Figure 11 This is a schematic diagram of water tank regulation provided in Embodiment 1 of the present invention;

[0032] Figure 12 This is a schematic diagram of the water flow direction when the fire water tank overflows, provided in Embodiment 1 of the present invention.

[0033] Figure 13 This is a schematic diagram of a fire water tank overflowing, provided in Embodiment 1 of the present invention;

[0034] Figure 14 This is a schematic diagram of the PLC controller provided in Embodiment 2 of the present invention;

[0035] Figure 15 This is a schematic diagram of remote industrial control computer control provided in Embodiment 2 of the present invention;

[0036] Figure 16 This is a schematic diagram of the mode switching controller provided in Embodiment 2 of the present invention;

[0037] Figure 17 This is a schematic diagram of the control flow provided in Embodiment 2 of the present invention;

[0038] Reference numerals: 1. Water tank; 101. Water tank one; 102. Water tank two; 103. Horizontal opening; 2. Water level gauge; 3. Horizontal column; 301. Water guide hole; 302. Drainage channel; 4. Clamping frame; 401. Screw; 5. End plate; 6. Water storage bag; 7. Sealing gasket; 8. Sealing strip; 9. Camera; 10. Fine water mist pump set; 11. Fire water tank; 12. Water regulating frame; 13. Pump one; 14. Pump two; 15. Pressurized water tank; 16. PLC controller; 17. Solenoid valve; 18. First flow sensor; 19. Second flow sensor; 20. Remote industrial control computer; 21. Data acquisition and output module; 22. Mode switching controller. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1

[0041] See Figure 1 , Figure 2 A substation fine water mist fire extinguishing system with water intrusion fault prevention function includes a fire water tank 11, a fine water mist pump group 10, and cameras 9. The cameras 9 are located outside the fire water tank 11 and the fine water mist pump group 10. The fine water mist pump group 10 is connected to the downstream of the fire water tank 11 through a connecting pipe. It should be noted that multiple cameras 9 are installed around the fire water tank 11 and the fine water mist pump group 10 to monitor their usage status and the surrounding environment. The fine water mist pump group 10 is used to quickly spray fine water mist into the space during a fire to suppress and extinguish the fire. Its structure can adopt the pipes, deluge valve group, filter, water mist nozzle, and other structures found in existing water mist fire extinguishing systems. The fire water tank 11 is also connected to an external water supply mechanism, which is used to replenish the fire water tank 11 during the fire extinguishing process.

[0042] See Figure 3 , Figure 9 , Figure 10The fire water tank 11 includes two water tanks 1, a water regulating frame 12, and a water level gauge 2. In this embodiment, the two water tanks 1 include a first water tank 101 and a second water tank 102. The water regulating frame 12 is provided with a connecting channel, and both ends of the connecting channel are connected to water storage bags 6. The two water storage bags 6 are located in the two water tanks 1 respectively, and any one water storage bag 6 can extend along the connecting channel into the other water storage bag 6. Both the first water tank 101 and the second water tank 102 are provided with water level gauges 2, and the first water tank 101 and the second water tank 102 are connected to each other. The two 102 are connected by a pipeline, which is equipped with a water pump. The pipeline includes a first connecting pipeline and a second connecting pipeline. The two ends of the first connecting pipeline and the second connecting pipeline are respectively connected to water tank 101 and water tank 2 102. Pump 13 and pump 2 14 are respectively installed on the first connecting pipeline and the second connecting pipeline. Pump 13 can drive water in water tank 101 to water tank 2 102, and pump 2 14 can drive water in water tank 2 102 to water tank 101.

[0043] See Figure 10 , Figure 11 The water level gauge 2 is used to monitor the water level in water tank 101 and water tank 202. If there is a leak in water tank 101, the water in it will be transferred to the intact water tank 202. Since the water volume exceeds the capacity of water tank 202, when the liquid level in water tank 202 is above the plane where the bottom of the connecting channel is located, the water pressure will drive the water storage bag 6 in water tank 202 to flip over and extend into the water storage bag 6 in the leaking water tank 101. At this time, the excess water will be put into the water storage bag 6 in the original water tank 202 after flipping over. It is indirectly stored in the leaking water tank 101 through the water storage bag 6, which not only effectively prevents the water from continuing to leak, but also achieves in-situ storage of water without occupying other space, thus avoiding the occurrence of water damage to electrical equipment caused by leakage.

[0044] See Figure 4 , Figure 12 , Figure 13 The water regulating rack 12 is also equipped with a diversion channel 302. One end of the diversion channel 302 is connected to the connecting channel, and the other end extends away from the water tank 1 with an open end. When the external water supply is turned off, if the inflow rate in the water tank 1 is greater than the outflow rate, the water storage bag 6 on the water regulating rack 12 will be squeezed to the outside through the open end along the diversion channel 302 under the action of water pressure. At this time, the excess water in the water tank 1 is also stored in the water storage bag 6, which hangs to the outside, thereby providing additional storage space for the water overflowing from the water tank 1, effectively slowing down the process of water invading electrical equipment, providing valuable time for personnel to deal with it in a timely manner, and also playing a direct warning role.

[0045] See Figure 5 , Figure 7 , Figure 8The water regulating frame 12 includes a horizontal column 3, a clamping frame 4, and an end plate 5. The end plate 5 is fixedly connected to both ends of the horizontal column 3. The horizontal column 3 is vertically fixed between water tank 1 101 and water tank 2 102. Water tank 1 101 and water tank 2 102 are also provided with horizontal openings 103 adapted to the horizontal column 3. The horizontal openings 103 are groove structures that are sealed and fixed to the horizontal column 3. A sealing gasket 7 is provided between the connection surfaces of water tank 1 and the horizontal column 3 of the water regulating frame 12. A sealing strip 8 is provided between water tank 1 101 and water tank 2 102. The sealing strip 8 abuts against water tank 1 101 and water tank 2 102 respectively.

[0046] The water regulating frame 12 is detachably fixed to the water tank 1. In this embodiment, a clamping frame 4 is fitted at both ends of the horizontal column 3. The size of the clamping frame 4 is larger than the cross-sectional size of the horizontal column 3. The clamping frame 4 is connected and fastened to the end plate 5 at the end of the horizontal column 3 by a screw 401. A nut is threaded to one end of the screw 401 that passes through the end plate 5, so that the two clamping frames 4 press against the outer wall of the water tank 1 and fix the entire water regulating frame 12 to the first water tank 101 and the second water tank 102.

[0047] See Figure 6 In this embodiment, two water guide holes 301 are provided, both located in the middle of the horizontal column 3 and symmetrically arranged. The water guide holes 301 form a connecting channel. The end face of the water guide holes 301 is fixedly connected to the mouth of the two water storage bags 6 respectively, so that the water storage bags 6 and the connecting channel form a closed cavity structure, forming a total of two closed cavity structures. Two drainage channels 302 are provided, located at both ends of the horizontal column 3 respectively. The two drainage channels 302 are respectively connected to the two connecting channels.

[0048] Example 2

[0049] See Figure 14 , Figure 15The difference between this embodiment and Embodiment 1 is that it also includes a pressurized water tank 15, a solenoid valve 17, a PLC controller 16, a mode switching controller 22, a data acquisition and output module 21, and a remote industrial control computer 20. In this embodiment, the inlet ends of the two water tanks 1 are fixedly connected to the same inlet pipe. The upstream of the fire water tank 11 is connected to the pressurized water tank 15 through a connecting pipe, i.e., this inlet pipe. Flow sensors are installed on both the upstream and downstream connecting pipes of the fire water tank 11, namely a first flow sensor 18 and a second flow sensor 19. A solenoid valve 17 is also installed on the connecting pipe between the fire water tank 11 and the pressurized water tank 15. The PLC controller 16 or the remote industrial control computer 20 or the PLC controller 16 and the remote industrial control computer 20 are also included. The remote industrial control computer 20 is electrically or communicatively connected to the water level gauge 2, the solenoid valve 17, and the flow controller. It can judge the leakage of the fire water tank 11 based on the input and output flow of the fire water tank 11, and control the opening and closing of the solenoid valve 17 at the same time. This can effectively overcome the reliability defects of using a single open water tank float valve. By using a pressurized water tank 15 for water storage, the reliability defects of using a single open water tank float valve can be effectively overcome, and the water storage overflow prevention effect can be further improved. The PLC controller 16 and / or the remote industrial control computer 20 are electrically connected to the data acquisition and output module 21 and the mode switching controller 22. The mode switching controller 22 is electrically connected to the solenoid valve 17, and the data acquisition and output module 21 is electrically connected to the flow sensor.

[0050] The control of solenoid valve 17 is regulated by mode switching controller 22. The input signals of mode switching controller 22 are two control signals: PLC controller 16 and remote industrial control computer 20. The two modes are backups for each other. When either PLC controller 16 or remote industrial control computer 20 fails to control, the other control system can automatically take over, i.e., control mode switching. Through the above process, the situation where the water replenishment function fails to open or close due to circuit control failure can be reduced in a single control mode, which can further improve the water storage and overflow prevention effect.

[0051] It should be noted that the PLC controller 16 can be a Siemens S7-200 Smart PLC controller, the mode switching controller 22 can be a Hikvision HK-LD-8034 multi-line terminal, the data acquisition and output module 21 can be a Hikvision HK-LD-8027 data acquisition and output module, and the remote control industrial computer can be an ASUS EBE-4U-H110-IM-A industrial computer.

[0052] Working principle:

[0053] See Figure 17In the event of a fire, the fine water mist pump unit 10 starts, outputting water from the water tank 1 for fire extinguishing. At the same time, the solenoid valve 17 opens, and the pressurized water tank 15 replenishes water to the water tank 1. The first flow sensor 18 transmits the inlet water flow of the water tank 1 to the acquisition and output module 21, and the second flow sensor 19 transmits the water flow at the front end of the fine water mist pump unit 10 to the acquisition and output module 21. The acquisition and output module 21 periodically transmits the above signals to the PLC controller 16 and / or the remote industrial control computer 20. The opening of the solenoid valve 17 is adjusted by either the PLC controller 16 or the remote industrial control computer 20, or both, to ensure a continuous water supply to the water tank 1 while maintaining a fixed water level in the water tank 1 and reducing the occurrence of water overflow.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fire water tank for preventing water invasion failure, comprising two water sumps (1), two said water sumps (1) are communicated through a pipeline, a water pump is arranged on the pipeline, characterized in that, Also include the water regulating frame (12), water level gauge (2), the water regulating frame (12) is equipped with the connecting channel, both ends of the connecting channel are connected with the water storage bag (6), two water storage bags (6) are located in two water sumps (1) respectively, and any water storage bag (6) can extend to another water storage bag (6) along the connecting channel, both two water sumps (1) are equipped with water level gauge (2); The water regulating frame (12) is also equipped with a drainage channel (302), one end of the drainage channel (302) is communicated with the connecting channel, the other end extends away from the water sump (1), and the end face is provided as an open mouth; When the external water supply is closed, the water inflow in the water sump (1) is greater than the water outflow, the water storage bag (6) on the water regulating frame (12) is extruded to the outside through the open mouth along the drainage channel (302) and causes it to hang to the outside.

2. The fire water tank for preventing water intrusion failure according to claim 1, wherein The water regulating frame (12) is provided with a through water guide hole (301), the water guide hole (301) forms the connecting channel, and the end faces of the water guide hole (301) are fixedly connected with the bag mouths of two water storage bags (6) respectively, so that the water storage bag (6) and the connecting channel form a closed cavity structure.

3. The fire water tank for preventing water intrusion failure according to claim 1, wherein The connecting channel and the drainage channel (302) are provided with two, and the two drainage channels (302) are located at both ends of the water regulating frame (12) and are communicated with one connecting channel respectively.

4. The fire water tank for preventing water intrusion failure according to claim 1, wherein The water regulating frame (12) and the water sump (1) can be detachably fixed, and the connecting surface of the water regulating frame (12) and the water sump (1) is provided with a sealing element.

5. A fire water tank to prevent water ingress failure as claimed in claim 4 wherein, The water regulating frame (12) is vertically fixed between two water sumps (1), a sealing pad (7) is arranged between the connecting surface of the water sump (1) and the water regulating frame (12), and a sealing strip (8) is arranged between two water sumps (1).

6. A fire water tank to prevent water ingress failure as claimed in claim 4 wherein, The water regulating frame (12) includes a horizontal column (3) and a clamping frame (4), one clamping frame (4) is sleeved at both ends of the horizontal column (3), the clamping frame (4) is connected and fastened with the end portion of the horizontal column (3) through a screw rod (401), and the clamping frame (4) abuts against the outer wall of the water sump (1).

7. The fire water tank for preventing water intrusion failure according to claim 5, wherein The end of the water sump (1) connected with the water regulating frame (12) is provided with a horizontal opening (103) matched therewith.

8. A substation water mist fire extinguishing system comprising the fire water tank for preventing water intrusion failure according to any one of claims 1 to 7, characterized in that, It includes pressure tank (15), electromagnetic valve (17), PLC controller (16) and / or remote industrial computer (20), fine water mist pump group (10), camera (9), the camera (9) is arranged outside the fire-fighting water tank and fine water mist pump group (10), the upstream and downstream of the fire-fighting water tank are connected with pressure tank (15) and fine water mist pump group (10) through connecting pipelines respectively, the connecting pipeline is equipped with flow sensor, the connecting pipeline of the fire-fighting water tank and pressure tank (15) is also equipped with electromagnetic valve (17), the PLC controller (16) and / or remote industrial computer (20) are electrically connected or communicated with water level gauge (2), electromagnetic valve (17) and flow controller.

9. A substation water mist fire extinguishing system according to claim 8, characterized in that It also includes a mode switching controller (22) and a collection output module (21), the PLC controller (16) and / or the remote industrial computer (20) are electrically connected with the collection output module (21) and the mode switching controller (22), the mode switching controller (22) is electrically connected with the electromagnetic valve (17), and the collection output module (21) is electrically connected with the flow sensor.

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