Fire-fighting water tank for preventing water invasion fault and water mist fire extinguishing system of transformer substation

Abstract

The invention discloses a fire-fighting water tank and transformer substation water mist fire extinguishing system for preventing water invasion fault, which comprises two water cabins, a water transfer frame and a water level gauge, the water transfer frame is provided with a connecting channel, two ends of the connecting channel are connected with water storage bags, the two water storage bags are respectively located in the two water cabins, and the water level gauge is connected with the water storage bags. The two water storage bags are connected through a connecting channel, any water storage bag can extend into the other water storage bag along the connecting channel, water level gauges are arranged on the two water bins, the two water bins are communicated through a pipeline, and a water pump is arranged on the pipeline. According to the invention, the water is indirectly stored in the leaked water sump through the water storage bag, so that continuous leakage of the water is effectively prevented, meanwhile, on the basis of not occupying other space, in-situ storage of the water is realized, and the accident that the water invades electrical equipment due to leakage is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of fire protection equipment, and more specifically to a fire water tank and a substation water mist fire extinguishing system for preventing water intrusion failures. Background Art

[0002] Given the important position of substations in the entire power sector, fire prevention is of vital importance. At present, the fire extinguishing methods commonly used in substations mainly include heptafluoropropane fire extinguishing system, carbon dioxide fire extinguishing system and water spray fire extinguishing system.

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

[0004] The patent document with patent publication number CN111408086A discloses a substation fire inspection and extinguishing system and a fire extinguishing method thereof, including an autonomous positioning navigation obstacle avoidance unit, a fine water mist fire extinguishing unit, a walking control unit, a sensor control unit and a power supply unit; regular patrols are carried out in a predetermined area, and the surrounding environment is scanned by an infrared dual-view thermal imaging module; when a fire is found, the main control module sends out an alarm signal, which analyzes the image data to determine the fire area and the fire source area with the highest temperature; if the maximum distance between the fire source area and the fire area boundary is less than or equal to 1m, priority fire source extinguishing is performed, and if the maximum distance between the fire source area and the fire area boundary is greater than 1m, priority anti-diffusion fire extinguishing is performed, and then priority fire source extinguishing is performed; when the surface temperature of the object is 30°C to 100°C, fire extinguishing of the area is stopped; after the fire extinguishing is completed, the system continues to patrol. Through the above settings, it has extremely high fire extinguishing efficiency, and no secondary damage will be caused to electronic equipment during the fire extinguishing process.

[0005] However, in actual operation, the failure of the fine water mist fire extinguishing system itself can easily cause the risk of power outages in electrical equipment. For example, the floating ball of the connecting rod of the water mist water tank inlet control valve falls off, causing the automatic closing and water replenishment function of the water inlet control valve to fail. The water inlet of the water tank is supplied by the fire water source. Since the water inlet flow is greater than the drainage flow, the fire pump cannot discharge the overflow water in time, which will eventually cause water intrusion accidents of electrical equipment. In addition, when the water tank itself leaks, it is also easy to cause water intrusion accidents of electrical equipment. Summary of the invention

[0006] The technical problem to be solved by the present invention is how to avoid water intrusion accidents in electrical equipment caused by self-faults such as leakage or failure of closing the 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 failures, comprising two water tanks, a water regulating rack, and a water level gauge, the water regulating rack being provided with a connecting channel, both ends of the connecting channel being connected to water storage bags, the two water storage bags being respectively located in the two water tanks, and any one of the water storage bags being able to extend along the connecting channel into the other water storage bag, the two water tanks being provided with water level gauges, and the two water tanks being connected by a pipeline, and a water pump being provided on the pipeline.

[0008] As a preferred technical solution, the water regulating rack is further provided with a drainage channel, one end of which is connected to the connecting channel, and the other end of which extends away from the water tank, and the end face is open.

[0009] As a preferred technical solution, the water regulating rack is provided with a through water conducting hole, which forms the connecting channel. The end faces of the water conducting hole are respectively fixed to the openings of 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, two connecting channels and two drainage channels are provided, and the two drainage channels are respectively located at two ends of the water regulating rack and are respectively connected to one connecting channel.

[0011] As a preferred technical solution, the water regulating rack and the water tank are detachably fixed, and a sealing member is provided on the connecting surface between the water regulating rack and the water tank.

[0012] As a preferred technical solution, the water regulating rack is vertically fixed between the two water tanks, a sealing gasket is provided between the connecting surface of the water tank and the water regulating rack, and a sealing strip is provided between the two water tanks.

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

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

[0015] The present invention also provides a substation fine water mist fire extinguishing system including the above-mentioned fire water tank for preventing water intrusion failures, including a pressure water tank, a solenoid valve, a PLC controller and / or a remote industrial computer, a fine water mist pump group, and a camera. The camera is arranged on the outside of the fire water tank and the fine water mist pump group. The upstream and downstream of the fire water tank are respectively connected to the pressure water tank and the fine water mist pump group through connecting pipes. A flow sensor is provided on the connecting pipe. A solenoid valve is also provided on the connecting pipe between the fire water tank and the pressure water tank. The PLC controller and / or the remote industrial computer are electrically or communicatively connected to the water level meter, the solenoid valve, and the flow controller.

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

[0017] The beneficial effects of the present invention are:

[0018] (1) In the present invention, by setting up two water tanks, when there is a leak in one water tank, the water therein is input into another intact water tank. Since the amount of water exceeds the capacity of the water tank, the water pressure will drive the water storage bag on the water regulating rack to bend over and extend to the water storage bag in the leaking water tank. At this time, the excess water will be loaded into the flanged water storage bag and indirectly stored in the leaking water tank through the water storage bag, which effectively prevents the continued leakage of water and realizes the in-situ storage of water without occupying other space, thereby avoiding the occurrence of water intrusion accidents into electrical equipment caused by leakage.

[0019] (2) In the present invention, by setting up the drainage channel and connecting it with the connecting channel, when the external water supply shut-off function is realized, when the water inlet flow in the water tank is greater than the water outlet flow, under the action of water pressure, the water storage bag on the water regulating rack will be squeezed to the outside along the drainage channel. At this time, the excess water in the water tank is also stored in the water storage bag, which is hung to the outside, thereby providing additional storage space for the water overflowing from the water tank, effectively slowing down the process of water intrusion into electrical equipment, providing valuable time for personnel to deal with it in a timely manner, and also serving as an intuitive warning.

[0020] (3) In the present invention, the PLC controller and the remote industrial computer are electrically connected to the acquisition output module and the mode switching controller, and serve as a backup for each other. This can reduce 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 improve the water storage overflow prevention effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the overall structure provided by Embodiment 1 of the present invention;

[0022] Figure 2 A schematic diagram of a three-dimensional structure provided in Example 1 of the present invention;

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

[0024] Figure 4 A schematic diagram of the explosion structure of a fire water tank provided in Example 1 of the present invention;

[0025] Figure 5A schematic diagram of the explosion structure of a fire water tank provided in Example 1 of the present invention;

[0026] Figure 6 A schematic diagram of the explosion structure of the water regulating rack provided in Example 1 of the present invention;

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

[0028] Figure 8 Provided in Example 1 of the present invention Figure 7 A schematic diagram of a local enlarged structure;

[0029] Fig. 9 A schematic diagram of a top view of the structure of a water tank provided in Example 1 of the present invention;

[0030] Fig.10 A schematic diagram of the cross-sectional structure of a water tank provided in Example 1 of the present invention;

[0031] Fig.11 A schematic diagram of water adjustment in a water tank provided in Example 1 of the present invention;

[0032] Fig.12 A schematic diagram of the direction of water flow when the fire water tank overflows provided in Example 1 of the present invention;

[0033] Fig.13 A schematic diagram of fire water tank overflow provided in Example 1 of the present invention;

[0034] Fig.14 A schematic diagram of a PLC controller control provided in Example 2 of the present invention;

[0035] Fig.15 A schematic diagram of remote industrial computer control provided in Example 2 of the present invention;

[0036] Fig.16 A control schematic diagram of a mode switching controller provided in Embodiment 2 of the present invention;

[0037] Fig.17 A schematic diagram of a control flow provided in Example 2 of the present invention;

[0038] Figure numbers: 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. Clamp frame; 401. Screw; 5. End plate; 6. Water storage bag; 7. Sealing pad; 8. Sealing strip; 9. Camera; 10. Fine water mist pump set; 11. Fire water tank; 12. Water regulating rack; 13. Pump one; 14. Pump two; 15. Pressure water tank; 16. PLC controller; 17. Solenoid valve; 18. First flow sensor; 19. Second flow sensor; 20. Remote industrial computer; 21. Collection output module; 22. Mode switching controller. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1

[0041] See also Figure 1 , Figure 2 A substation water mist fire extinguishing system with water intrusion fault prevention function includes a fire water tank 11, a water mist pump group 10, and a camera 9. The camera 9 is arranged on the outside of the fire water tank 11 and the water mist pump group 10. The downstream of the fire water tank 11 is connected to the water mist pump group 10 through a connecting pipe; it should be noted that there are multiple cameras 9, which are arranged around the fire water tank 11 and the water mist pump group 10 to monitor the use status of the two and the surrounding environment. The water mist pump group 10 is used to quickly spray water mist into the space when a fire occurs to suppress and extinguish the fire. Its structural composition can adopt the pipes, deluge valve groups, filters, water mist nozzles and other structures in the existing water spray fire extinguishing system. The fire water tank 11 is also connected to an external water supply mechanism, which is used to replenish the fire water tank 11 with water during the fire extinguishing process.

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

[0043] See also Fig.10 , Fig.11 The water level meter 2 is used to monitor the water levels in the water tank 101 and the water tank 102. When there is a leak in the water tank 101, the water therein is input into the intact water tank 102. Since the amount of water exceeds the capacity of the water tank 102, when the liquid level in the water tank 102 is above the plane where the bottom of the connecting channel is located, the water pressure will drive the water storage bag 6 in the water tank 102 to turn over and extend to the water storage bag 6 in the leaking water tank 101. At this time, the excess water will be loaded into the water storage bag 6 in the original water tank 102 after turning over, and will be indirectly stored in the leaking water tank 101 through the water storage bag 6, which can effectively prevent the continued leakage of water and realize the in-situ storage of water without occupying other space, thereby avoiding the occurrence of water intrusion accidents of electrical equipment caused by leakage.

[0044] See also Figure 4 , Fig.12 , Fig.13 A drainage channel 302 is also provided on the water regulating rack 12. One end of the drainage channel 302 is connected to the connecting channel, and the other end extends away from the water tank 1, and the end face is open. When the external water supply is closed, the water inlet flow in the water tank 1 is greater than the drainage flow, under the action of water pressure, the water storage bag 6 on the water regulating rack 12 will be squeezed to the outside through the opening along the drainage channel 302. At this time, the excess water in the water tank 1 is also stored in the water storage bag 6, so that it 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 intrusion into electrical equipment, providing valuable time for personnel to deal with it in a timely manner, and also serving as an intuitive warning.

[0045] See also Figure 5 , Figure 7 , Figure 8The water regulating rack 12 includes a horizontal column 3, a clamping frame 4, and an end plate 5. Both ends of the horizontal column 3 are fixedly connected with the end plate 5, wherein the horizontal column 3 is vertically fixed between the water tank 1 101 and the water tank 2 102. The water tank 1 101 and the water tank 2 102 are also provided with a horizontal opening 103 adapted to the horizontal column 3. The horizontal opening 103 is a groove structure and is sealed and fixed with the horizontal column 3. A sealing gasket 7 is provided between the connecting surface of the water tank 1 and the horizontal column 3 of the water regulating rack 12. A sealing strip 8 is provided between the water tank 1 101 and the water tank 2 102, and the sealing strip 8 is respectively against the water tank 1 101 and the water tank 2 102;

[0046] The water regulating frame 12 is detachably fixed to the water tank 1. In this embodiment, a clamping frame 4 is sleeved on 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 through a screw 401. One end of the screw 401 passes through the end plate 5 and is threadedly connected with a nut, so that the two clamping frames 4 press the outer wall of the water tank 1, and the entire water regulating frame 12 is fixed to the water tank 1 101 and the water tank 2 102;

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

[0048] Example 2

[0049] See also Fig.14 , Fig.15The difference between this embodiment and embodiment 1 is that a pressure water tank 15, a solenoid valve 17, a PLC controller 16, a mode switching controller 22, an acquisition output module 21, a remote industrial computer 20, etc. are further provided. In this embodiment, the water inlet ends of the two water tanks 1 are fixedly connected with the same water inlet pipe, the upstream of the fire water tank 11 is connected to the pressure water tank 15 through a connecting pipe, that is, the water inlet pipe is connected to the pressure water tank 15, and the connecting pipes upstream and downstream of the fire water tank 11 are both provided with flow sensors, which are a first flow sensor 18 and a second flow sensor 19, respectively. The connecting pipe between the fire water tank 11 and the pressure water tank 15 is also provided with a solenoid valve 17, a PLC controller 16 or a remote industrial computer 20 or a PLC controller 16 and a remote The end industrial computer 20 is electrically or communicatively connected with the water level meter 2, the solenoid valve 17, and the flow controller, and can judge the leakage of the fire water tank 11 according to 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, which can effectively overcome the reliability defect of using a single open water tank float valve; by using the pressure water tank 15 to store water, the reliability defect 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 computer 20 are electrically connected with the acquisition output module 21 and the mode switching controller 22, the mode switching controller 22 is electrically connected with the solenoid valve 17, and the acquisition output module 21 is electrically connected with the flow sensor;

[0050] That is, the control of the solenoid valve 17 is adjusted by the mode switching controller 22, and the input signal of the mode switching controller 22 is two control signals of the PLC controller 16 and the remote industrial computer 20. The two modes are mutually standby. When one of the control of the PLC controller 16 or the remote industrial computer 20 fails, the other control system can automatically take over, that is, the control mode is switched. Through the above process, the situation of failure of opening or closing the water replenishment function due to circuit control failure in a single control mode can be reduced, and the water storage overflow prevention effect can be further improved;

[0051] It should be noted that the PLC controller 16 can adopt the Siemens s7-200smart PLC controller, the mode switching controller 22 can adopt the Hikvision HK-LD-8034 multi-line terminator, the acquisition output module 21 can adopt the Hikvision HK-LD-8027 acquisition output module, and the remote control industrial computer can adopt the Asus EBE-4U-H110-IM-A industrial computer.

[0052] Working principle:

[0053] See also Fig.17When a fire occurs, the fine water mist pump group 10 starts and outputs the water in the water tank 1 for fire extinguishing. At the same time, the solenoid valve 17 is opened, and the pressure water tank 15 replenishes water to the water tank 1. The first flow sensor 18 transmits the water flow at the inlet of the water tank 1 to the collection and output module 21, and the second flow sensor 19 transmits the water flow at the front end of the fine water mist pump group 10 to the collection and output module 21. The collection and output module 21 transmits the above signal to the PLC controller 16 and / or the remote industrial computer 20 at a regular time. The opening of the solenoid valve 17 is adjusted by one of the PLC controller 16 or the remote industrial computer 20 or at the same time. While ensuring a continuous water supply to the water tank 1, the effect of maintaining a fixed water level in the water tank 1 is achieved, thereby reducing the occurrence of water overflow.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions 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 intrusion failure, characterized in that: The invention comprises two water tanks (1), a water regulating rack (12), and a water level gauge (2); the water regulating rack (12) is provided with a connecting channel, both ends of the connecting channel are connected to water storage bags (6), the two water storage bags (6) are respectively located in the two water tanks (1), and any one of the water storage bags (6) can extend along the connecting channel to the other water storage bag (6); the two water tanks (1) are provided with a water level gauge (2), and the two water tanks (1) are connected by a pipeline, and a water pump is provided on the pipeline.

2. A fire water tank for preventing water intrusion failure according to claim 1, characterized in that: The water regulating rack (12) is also provided with a drainage channel (302), one end of which is in communication with the connecting channel, and the other end of which extends away from the water tank (1), and the end surface of which is open.

3. A fire water tank for preventing water intrusion failure according to claim 1, characterized in that: The water regulating rack (12) is provided with a through water conducting hole (301), the water conducting hole (301) forming the connecting channel, the end faces of the water conducting hole (301) being respectively fixedly connected to the bag openings of the two water storage bags (6), so that the water storage bags (6) and the connecting channel form a closed cavity structure.

4. A fire water tank for preventing water intrusion failure according to claim 2, characterized in that: The connecting channel and the drainage channel (302) are provided with two, and the two drainage channels (302) are respectively located at two ends of the water regulating frame (12), and are respectively connected to one of the connecting channels.

5. A fire water tank for preventing water intrusion failure according to claim 1, characterized in that: The water regulating rack (12) and the water tank (1) are detachably fixed, and a sealing member is provided on the connection surface between the water regulating rack (12) and the water tank (1).

6. A fire water tank for preventing water intrusion failure according to claim 5, characterized in that: The water regulating rack (12) is vertically fixed between the two water tanks (1), a sealing gasket (7) is provided between the connecting surfaces of the water tank (1) and the water regulating rack (12), and a sealing strip (8) is provided between the two water tanks (1).

7. A fire water tank for preventing water intrusion failure according to claim 5, characterized in that: The water regulating frame (12) comprises a transverse column (3) and a clamping frame (4). A clamping frame (4) is sleeved on both ends of the transverse column (3). The clamping frame (4) is connected and fastened to the end of the transverse column (3) via a screw rod (401), so that the clamping frame (4) abuts against the outer wall of the water tank (1).

8. A fire water tank for preventing water intrusion failure according to claim 6, characterized in that: One end of the water tank (1) connected to the water regulating rack (12) is provided with a horizontal opening (103) adapted thereto.

9. A substation water mist fire extinguishing system comprising a fire water tank for preventing water intrusion failure according to any one of claims 1 to 8, characterized in that: The invention comprises a pressure water tank (15), a solenoid valve (17), a PLC controller (16) and / or a remote industrial computer (20), a fine water mist pump group (10), and a camera (9). The camera (9) is arranged outside the fire water tank and the fine water mist pump group (10). The fire water tank is connected to the pressure water tank (15) and the fine water mist pump group (10) upstream and downstream respectively through connecting pipes. A flow sensor is arranged on the connecting pipe. The connecting pipe between the fire water tank and the pressure water tank (15) is also provided with a solenoid valve (17). The PLC controller (16) and / or the remote industrial computer (20) are electrically or communicatively connected to the water level meter (2), the solenoid valve (17), and the flow controller.

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

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