A kind of tank spray system and method for chemical warehouse area

Abstract

The application discloses a kind of for chemical warehouse area's storage tank spray system and method, storage tank spray system includes: first component, second component, shunt filter and controller;First component includes main fire pipe and first spray head, second component includes transmission pipe and second spray head, shunt filter includes water source entrance and outlet;Main fire pipe one end is communicated with shunt filter outlet, other end is communicated first spray head, transmission pipe one end is communicated with shunt filter outlet, other end is communicated second spray head;Second component is full of spray water, second spray head receives and responds fire request, starts initial spray to storage tank;Controller receives the water volume change signal of transmission pipe in initial spray process, to control first spray head to carry out secondary spray to storage tank.Storage tank spray system is set by main, passive spray component, based on the processing of passive water volume change signal, realizes the intelligent control of chemical warehouse area storage tank fire fighting.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tank fire fighting, and particularly relates to a tank spraying system and method for a chemical warehouse. BACKGROUND

[0002] At present, most of the tank spraying systems in chemical warehouses only use transmission pipes, cooling pipes and pneumatic valve structures for fire fighting and cooling control, and have poor electrification and intelligence, and can only meet the basic requirements of tank spraying fire fighting.

[0003] For example, patent CN114949702A discloses a fire-fighting water curtain spraying system and method for handling liquid ammonia leakage. The system includes a water source area and a liquid ammonia area arranged on the ground, and the water source area and the liquid ammonia area are connected by a pump. The water source area includes a water storage tank and a vacuum water collecting tank. A water suction pipe is arranged at the bottom of the water suction pipe, and a water supplement pipe, a valve and a gas vent valve or a backflow valve are arranged at the top of the vacuum water collecting tank. The liquid ammonia area includes a liquid ammonia storage tank, an outlet spraying main pipe and a spray head. One end of the pump is connected to the vacuum water collecting tank through a pipe, and the other end is connected to the spray head through the outlet spraying main pipe. A water outlet door is arranged on the outlet spraying main pipe. The system also includes a ring network branch pipe, and the spray head is installed on the ring network branch pipe and adjusted to face the liquid ammonia storage tank. The pump, the outlet spraying main pipe and the ring network branch pipe are arranged horizontally, and the spray head is installed at an appropriate angle towards the liquid ammonia storage tank.

[0004] For example, patent CN206715115U discloses a novel fire-fighting spraying system for a liquid ammonia storage tank. The system includes a main plant fire hydrant pipe, a filter, a deluge valve group and a liquid ammonia storage tank spraying device. The liquid ammonia storage tank spraying device includes a second valve, a first pneumatic valve, a central axis spraying branch pipe, a central axis branch pipe spraying head, a third valve, a second pneumatic valve, an outer spraying branch pipe and an outer branch pipe spraying head. By adding two valves and two pneumatic valves, the fire-fighting spraying system can be opened in sections to spray, which solves the problem of lack of spraying openings in key leakage areas, has the ability to treat leakage points differently and spray them specifically, and focuses on treating the storage tank that actually leaks, thereby reducing the amount of water used for fire fighting and solving the problem of insufficient water pressure or water quantity causing other dangerous problems.

[0005] Although the tank spraying system in the prior art mentioned above can meet the basic fire fighting requirements, the tank spraying system will not work normally when any one of the transmission pipe or the pneumatic valve fails, and the operation is complicated and only relies on the transmission pipe to control the hydraulic control valve, which cannot meet the requirements of intelligent remote control. Therefore, it is necessary to provide an intelligent remote control tank fire fighting system for large chemical product storage tanks (such as 1000m 3 The above) has become a necessary requirement for the design of oil depots.

[0006] Therefore, how to set up a safe and redundant intelligent tank spray system to realize remote monitoring, operation and automatic control of tank spray is a problem to be solved by those skilled in the art. SUMMARY

[0007] In view of the defects in the prior art, the present application provides a tank spray system and method for a chemical plant area, which connects a first component and a second component through a shunt filter, the second component receives and responds to a fire request, initiates initial spray on the tank, the controller receives a water volume change signal of the transmission pipe during the initial spray process, and controls the first spray head to spray the tank again.

[0008] In the first aspect, the present application provides a tank spray system for a chemical plant area, comprising a first component, a second component, a shunt filter and a controller.

[0009] The first component comprises a main fire pipe and a first spray head, the second component comprises a transmission pipe and a second spray head, and the shunt filter comprises a water source inlet and an outlet.

[0010] The main fire pipe is in communication with the outlet of the shunt filter at one end and the first spray head at the other end, and the transmission pipe is in communication with the outlet of the shunt filter at one end and the second spray head at the other end.

[0011] The second component is filled with spray water, the second spray head receives and responds to a fire request, and initiates initial spray on the tank; the controller receives a water volume change signal of the transmission pipe during the initial spray process to control the first spray head to spray the tank again.

[0012] Further, the shunt filter is a Y-shaped filter, and the front end of the water source inlet of the Y-shaped filter is provided with a gate valve for controlling the flow of the water source into the Y-shaped filter.

[0013] Further, the water source is connected to the tank spray system through a main underground spray main pipe of the chemical plant area.

[0014] Further, the first spray head comprises a middle ring pipe and a lower ring pipe, both of which are arranged on the periphery of the sidewall of the tank; the second spray head is a closed ring pipe spray head, which is arranged above the top of the tank, and a plurality of evenly distributed glass tubes are arranged on the lower edge of the closed ring pipe spray head.

[0015] The glass tubes receive a fire request of the tank, break, and the closed ring pipe spray head sprays water from the position of the broken glass tubes to spray the tank initially.

[0016] Further, the closed ring pipe spray head, the middle ring pipe and the low ring pipe are arranged in equal difference along the height direction of the storage tank from top to bottom.

[0017] Further, from the outlet of the shunt filter, the drive pipe is sequentially provided with a pressure transmitter assembly, a flow assembly and a test valve; the main fire-fighting pipeline is provided with an electric gate valve and a vent valve, the electric gate valve is arranged at the rear end of the outlet of the shunt filter, and the vent valve is arranged between the electric gate valve and the first spray head.

[0018] The controller is in communication connection with the pressure transmitter assembly, the flow assembly and the electric gate valve, the controller receives the pressure data transmitted by the pressure transmitter assembly and the water volume change signal given by the flow assembly, analyzes and responds, and gives an opening instruction for controlling the electric gate valve.

[0019] Further, the controller receives the pressure data transmitted by the pressure transmitter assembly and the water volume change signal given by the flow assembly, analyzes and responds, and gives an opening instruction for controlling the electric gate valve, specifically including:

[0020] The controller receives the pressure data transmitted by the pressure transmitter assembly in real time, and if the pressure data reaches a predetermined value, the controller starts to receive the water volume change signal transmitted by the flow assembly in real time;

[0021] According to the water volume change signal and the water volume threshold value, the received water volume change signal is analyzed and processed;

[0022] Based on the analysis result of the water volume change signal, the mode of controlling the opening and closing of the electric gate valve is determined, and an opening instruction for controlling the electric gate valve is given;

[0023] The analysis and processing of the received water volume change signal specifically include:

[0024] The water volume change signal is analyzed to obtain the water volume value and the corresponding time value in the water volume change signal;

[0025] An initial water volume value is determined, and the time value of the initial time is recorded, wherein the initial water volume value is the first water volume value higher than the water volume threshold value, and the initial time is the time value corresponding to the initial water volume value;

[0026] The rear-end water volume value and the water volume threshold value are compared, and the time difference between the rear-end time and the initial time is compared, wherein the rear-end time is the time when the water volume change signal is collected in real time after the initial time, and the rear-end water volume value is the water volume value corresponding to the rear-end time;

[0027] If the rear-end water volume value is higher than the water volume threshold value, and the time difference between the rear-end time and the initial time is less than a time threshold value, the rear-end water volume value is continuously updated and compared with the water volume threshold value;

[0028] If the back-end water quantity value is higher than the water quantity threshold value, and the time difference between the back-end time and the initial time is greater than the time threshold value, it is determined as valid information for opening the electric gate valve fire-fighting mode.

[0029] If the back-end water quantity value is lower than the water quantity threshold value, it is determined as invalid information for opening the electric gate valve fire-fighting mode, and the determination of the initial water quantity value is re-performed.

[0030] The controller determines whether to send a signal for opening or closing the fire-fighting mode of the electric gate valve by analyzing the back-end water quantity value and the time difference between the back-end time and the initial time. The water quantity is maintained at a high level for a certain time, and a signal for opening the electric gate valve fire-fighting mode is given to avoid misoperation or related interference, thereby achieving precise control of the tank spraying fire.

[0031] Further, the controller is connected with a UPS power circuit, the electric gate valve is connected with a dual-power explosion-proof emergency power box circuit, and the electric gate valve is further connected with an emergency button circuit.

[0032] Further, the controller is connected in communication with a DCS system of the chemical warehouse area, and the DCS system of the chemical warehouse area is connected in communication with a management platform of the chemical warehouse area.

[0033] In a second aspect, the application further provides a tank spraying method for a chemical warehouse area, which adopts the tank spraying system for the chemical warehouse area as described above, and specifically includes the following steps:

[0034] Connecting a water source to fill the second component with spraying water;

[0035] The second spray head receives and responds to a fire-fighting request to start initial spraying of the tank;

[0036] The controller receives a water quantity change signal of the transmission pipe during the initial spraying process to control the first spray head to perform secondary spraying of the tank.

[0037] The tank spraying system and method for the chemical warehouse area provided by the application have at least the following beneficial effects:

[0038] (1) The tank spraying system of the application has the functions of safety, redundancy and intelligence by setting the main and passive spraying components. The passive component responds first, and then the opening of the active component is controlled based on the processing of the passive water quantity change signal, thereby realizing intelligent control of the tank fire-fighting of the chemical warehouse area, and greatly reducing the human error rate and the failure rate of the tank spraying system.

[0039] (2) controller determines whether to send the opening and closing signal to the electric gate valve through the analysis of the rear water quantity value and the difference between the rear time and the initial time. The water quantity is maintained at a high level for a certain time, and the signal of opening the electric gate valve fire-fighting mode is given, so as to avoid misoperation or related interference, so as to realize the purpose of precise control of the storage tank spray fire-fighting. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 A storage tank spray system schematic diagram for a chemical warehouse area is provided for the present application.

[0041] Figure 2 A controller and component connection schematic diagram of an embodiment provided for the present application.

[0042] Figure 3 A controller control flow schematic diagram of an embodiment provided for the present application.

[0043] Figure 4 A storage tank spray method flow schematic diagram for a chemical warehouse area is provided for the present application.

[0044] BRIEF DESCRIPTION OF DRAWINGS

[0045] 1-chemical warehouse area main underground spray main, 2-main fire-fighting pipeline, 3-transmission pipe, 4-gate valve, 5-shunt filter, 6-flow component, 7-pressure transmitter component, 8-electric gate valve, 9-test valve, 10-vent valve, 11-closed loop pipe nozzle, 12-storage tank, 13-middle loop pipe, 14-low loop pipe. DETAILED DESCRIPTION

[0046] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the drawings and specific embodiments of the specification. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the present application.

[0047] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Multiple" generally includes at least two.

[0048] It is also to be understood that the terminology "include", "includes" or other variations thereof is used inclusively and not exclusively, so that the process or device that "includes" a list of elements also includes other elements not expressly listed, or further includes elements inherent to such process or device. An element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process or device including the defined element.

[0049] Considering the design specification requirements of the chemical warehouse area, on the basis of the fire-fighting cooling of the chemical storage tank, an automatic control component can be configured in the main and passive spraying components, the passive spraying component mainly responds to the request of the fire-fighting signal, and then the active spraying component is started through analysis and processing based on the water quantity change signal of the passive spraying component, so that intelligent control of the fire-fighting of the chemical warehouse area storage tank is realized.

[0050] As shown in Figure 1 The present application provides a kind of for the storage tank spraying system of chemical warehouse area, including: first component, second component, shunt filter 5 and controller;

[0051] Wherein, first component includes main fire pipeline 2 and first spray head, second component includes transmission pipe 3 and second spray head, shunt filter 5 includes water source entrance and outlet;

[0052] The main fire pipeline 2 of first component is communicated at one end with the outlet of shunt filter 5, and the other end is communicated with first spray head.

[0053] The transmission pipe 3 of second component is communicated at one end with the outlet of shunt filter 5, and the other end is communicated with second spray head.

[0054] Second component is full of spraying water, and second spray head receives and responds to fire request, and starts initial spraying to storage tank 12;Controller receives the water quantity change signal of transmission pipe 3 in initial spraying process, to control first spray head to carry out secondary spraying to storage tank 12.

[0055] The main fire pipeline 2 and the transmission pipe 3 are communicated with the water source through the shunt filter 5 respectively. The spraying of the first spray head in the first component and the second spray head in the second component in the first assembly has a sequence, that is, under normal circumstances, the second component and the shunt filter 5 are always in a conductive state, so that the second component is full of spraying water, and the second spray head responds immediately when receiving the fire signal (such as sensing the temperature of the fire and the like), and initiates the initial spraying of the storage tank 12. At this time, the water quantity in the transmission pipe 3 in the second component changes, and the signal of the water quantity change is sent to the controller. After receiving the signal of the water quantity change, the controller analyzes and processes the signal of the water quantity change, and gives an instruction to control the conduction of the first component and the shunt filter 5, so as to control the first spray head to spray the storage tank 12 again. Through the superposition of the initial spraying and the secondary spraying, the spraying design specification and requirement of the storage tank 12 are finally met, and the intelligent and safe control of the spraying is realized.

[0056] The storage tank spraying system of the present application is mainly set for a single chemical product storage tank. After each chemical product storage tank is set, it can be applied to the whole chemical product storage tank area.

[0057] The storage tank spraying system of the present application has the functions of safety, redundancy and intelligence by setting the main and passive spraying components. The passive component responds first, and then the active component is controlled to open based on the processing of the passive water quantity change signal, so as to realize the intelligent control of the chemical product storage tank fire, and the human error rate and the failure rate of the storage tank spraying system are greatly reduced.

[0058] The shunt filter 5 is a Y-type filter. The front end of the water source inlet of the Y-type filter is provided with a gate valve 4 for controlling the flow of the water source into the Y-type filter. The Y-type filter can filter the impurities in the fire water in the pipeline, so as to prevent the occurrence of the problem of overall pipe system blockage. The gate valve 4 at the front end of the water source inlet of the Y-type filter is a mechanical butterfly valve.

[0059] The water source is connected to the storage tank spraying system through the main underground spraying main pipe 1 of the chemical product storage tank area. The internal fire-fighting cooling fresh water of the main underground spraying main pipe 1 of the chemical product storage tank area comes from the storage tank area fire pump station. Each storage tank spraying system in the storage tank area can be connected to the main underground spraying main pipe 1 of the chemical product storage tank area.

[0060] The first spray head includes a middle ring pipe 13 and a low ring pipe 14, and the middle ring pipe 13 and the low ring pipe 14 are arranged on the periphery of the side wall of the storage tank 12. The second spray head is a closed ring pipe spray head 11, which is arranged above the top of the storage tank 12, and a plurality of uniformly distributed glass tubes are arranged on the lower edge of the closed ring pipe spray head 11.

[0061] When the fire-fighting request of the glass tube receiving storage tank 12 is received, the glass tube breaks, the closed loop pipe nozzle 11 sprays water from the position of the broken glass tube, and the initial spraying is performed on the storage tank 12.

[0062] The closed loop pipe nozzle 11, the middle section loop pipe 13 and the low section loop pipe 14 are arranged in an equal difference manner from top to bottom along the height direction of the storage tank 12. The interval of the closed loop pipe nozzle 11, the middle section loop pipe 13 and the low section loop pipe 14 can be adjusted according to the size of the storage tank 12 and the specific fire-fighting standard requirements, and no specific numerical value is limited here.

[0063] The closed loop pipe nozzle 11 is arranged at the top of the storage tank 12, and the closed loop pipe nozzle 11 is provided with a plurality of fire-fighting glass tubes. When the storage tank 12 catches fire, the fire-fighting glass tube will burst, the closed loop pipe nozzle 11 starts to spray water, and the spraying direction is from the top to the bottom, and the initial spraying is performed on the storage tank 12.

[0064] From the outlet of the shunt filter 5, the transmission pipe 3 is sequentially provided with a pressure transmitter assembly 7, a flow assembly 6 and a test valve 9; the main fire-fighting pipeline 2 is provided with an electric gate valve 8 and a vent valve 10, the electric gate valve 8 is arranged at the rear end of the shunt filter outlet, and the vent valve 10 is arranged between the electric gate valve 8 and the first nozzle;

[0065] The test valve 9 can be tested at any time during daily use to ensure that the spray tank system is in good and available state at all times. The pressure transmitter assembly 7 is arranged on the transmission pipe 3, which mainly displays and monitors the pressure value of the transmission pipe 3, so as to ensure that the second assembly is always in the state of being filled with spraying water. The flow assembly can be an intelligent flow meter or a flow sensor, which is used for monitoring and transmitting the water volume change signal in the transmission pipe 3, which can be water flow or current signal corresponding to water flow.

[0066] The controller is in communication connection with the pressure transmitter assembly 7, the flow assembly and the electric gate valve 8, the controller receives the pressure data transmitted by the pressure transmitter assembly 7 and the water volume change signal given by the flow assembly, analyzes and responds, and gives the opening instruction of the electric gate valve 8.

[0067] The controller can adopt a deluge valve control cabinet, and the deluge valve control cabinet can adopt a PLC+HMI automatic control mode. After receiving and analyzing the pressure data and the water volume change signal, the deluge valve control cabinet gives an instruction to the electric gate valve 8 to control the opening and closing of the electric gate valve 8.

[0068] The first component can realize two functions, i.e. (1) fire-fighting function: the controller analyzes and calculates according to the signal changes of the flow component 6 and the pressure transmitter component 7, executes the command of opening the electric gate valve 8 (the electric gate valve is fully opened), and performs the fire-fighting (cooling) action on the storage tank 11. (2) Spray cooling function: in summer, some storage tanks need to be sprayed and cooled, and a certain electric valve opening degree command, such as 30% (0-100% opening degree can be randomly set), is set. The controller randomly opens the electric gate valve 8 according to the input opening degree command to spray and cool the storage tank 11. Through the design of the random opening degree setting of the electric gate valve 8, the first component has two functions, and the utilization of the storage tank spray system is more energy-saving and environmentally friendly.

[0069] After the electric gate valve 8 is opened in the fire-fighting mode, the main fire-fighting pipeline 2 of the first component is in conduction with the shunt filter 5, the water source enters the first component, the first spray head (i.e. the middle ring pipe 13 and the low ring pipe 14) connected with the main fire-fighting pipeline 2 sprays the middle and lower parts of the storage tank 12 twice, and finally the fire is extinguished.

[0070] The specific process of the controller analyzing and processing the water quantity change signal and controlling the electric gate valve 8 mainly includes:

[0071] As shown in Figure 2 , the controller receives the pressure data transmitted by the pressure transmitter component 7 and the water quantity change signal given by the flow component, analyzes and responds, and gives the opening instruction of the electric gate valve 8, which specifically includes:

[0072] The controller receives the pressure data transmitted by the pressure transmitter component 7 in real time, and if the pressure data reaches a predetermined value, it starts to receive the water quantity change signal transmitted by the flow component in real time;

[0073] Generally, the predetermined value of the pressure is set between (0.4-0.6) MPa, for example, 0.5 MPa, and the specific data can be adjusted according to the applicability of different application scenarios, and no specific numerical value is specified here. Only when the data of the pressure transmitter component is greater than the predetermined value, can it be indicated that the second component is in the state of being filled with water for spraying, and the subsequent intelligent control of spraying can be performed.

[0074] The pressure value in the pressure transmitter component 7 can be displayed remotely, and when a single storage tank has a pressure anomaly, the occurrence of pipeline front-end congestion failure can be judged in advance; the occurrence of fire can be analyzed in cooperation with the flow component 6 to avoid system misoperation caused by water flow disturbance, and finally the command output by the controller is more accurate.

[0075] According to the water quantity change signal and the water quantity threshold, the received water quantity change signal is analyzed and processed;

[0076] Based on the analysis result of the water quantity change signal, a mode of controlling the opening and closing of the electric gate valve 8 is given, and an opening instruction of the electric gate valve is given.

[0077] When the closed loop pipe nozzle 11 at the end of the transmission pipe 3 senses a fire temperature rise and breaks after the glass pipe breaks, the water flow in the transmission pipe 3 causes the flow component 6 to output a signal change, and at the same time, the water flow in the transmission pipe 3 also causes the pressure value of the pressure transmitter component 7 to change, for example, the pressure value may reach (0.8-1) MPa. After receiving the two changes, the controller analyzes and operates, and according to the analysis and operation result, the command of opening the fire-fighting mode of the electric gate valve 8 is output.

[0078] Among them, the received water quantity change signal is analyzed and processed, specifically including:

[0079] The water quantity change signal is analyzed to obtain the water quantity value and the corresponding time value in the water quantity change signal;

[0080] The initial water quantity value is determined, and the time value of the initial time is recorded, wherein the initial water quantity value is the first water quantity value higher than the water quantity threshold value, and the initial time is the time value corresponding to the initial water quantity value;

[0081] The controller first performs real-time judgment on the real-time obtained water quantity value to determine whether the water quantity value is greater than the water quantity threshold value (the water quantity threshold value is set in advance, such as the water flow speed value, such as 50 cm / s; if a flow sensor is used, the current signal value can be set, such as 10 mA. Of course, the specific data can be adjusted according to the application scene, and here it is not specified); if the water quantity value is greater than the water quantity threshold value, the water quantity value greater than the water quantity threshold value is recorded and determined as the initial water quantity value, and the time value of the initial time is recorded; if the water quantity value is less than the water quantity threshold value, the real-time obtained water quantity value is still subjected to real-time judgment.

[0082] The back-end water quantity value and the water quantity threshold value are compared, and the time difference between the back-end time and the initial time is compared, wherein the back-end time is the time when the water quantity change signal is collected in real time after the initial time, and the back-end water quantity value is the water quantity value corresponding to the back-end time:

[0083] If the back-end water quantity value is higher than the water quantity threshold value, and the time difference between the back-end time and the initial time is less than the time threshold value, the back-end water quantity value is continuously updated and compared with the water quantity threshold value;

[0084] If the back-end water quantity value is higher than the water quantity threshold value, and the time difference between the back-end time and the initial time is greater than the time threshold value, it is determined that it is valid information for opening the electric gate valve fire-fighting mode;

[0085] If the back-end water quantity value is lower than the water quantity threshold value, it is determined that invalid information of opening the electric gate valve fire-fighting mode, and the initial water quantity value is determined again.

[0086] The back-end water quantity value is the water quantity value collected continuously after the initial time, and the back-end time is the time corresponding to the back-end water quantity value. After obtaining the back-end water quantity value and the back-end time, the size of the back-end water quantity value and the water quantity threshold value is judged, and the difference between the back-end time and the initial time is calculated. Only when all the back-end water quantity values received in the continuous time period exceeding the time threshold value are greater than the water quantity threshold value, it is determined that the information is valid, and the controller determines whether to send a signal of opening the fire-fighting mode to the electric gate valve 8 through analysis of the back-end water quantity value and the difference between the back-end time and the initial time.

[0087] When the controller analyzes and judges the water quantity change signal, the instantaneous flow disturbance problem caused by various external factors (for example, the opening of the fire pump affects the short-time water flow of the main underground spray dry pipe in the chemical warehouse area) is considered. Therefore, the control process of the present application increases the time limit, and the specific time threshold value can be pre-set between 1-5s. Only when the water quantity maintains at a high level for a certain time, the signal of opening the electric gate valve 8 fire-fighting mode can be given, so as to avoid misoperation or related interference, thereby achieving the purpose of precise control of the storage tank spray fire-fighting.

[0088] Operation of the tank spray system:

[0089] As shown in Figure 3 The pressure value displayed by the pressure transmitter assembly 7 on the transmission pipe 3 is normal, when the storage tank 12 catches fire, the glass tube senses the fire signal, the glass tube breaks, and the closed loop pipe spray head 11 at the top of the storage tank 12 starts to spray water. At this time, the flow assembly on the transmission pipe 3 starts to change the water quantity, and sends the water quantity change signal to the controller in real time.

[0090] After the controller receives and verifies the pressure data of the pressure transmitter assembly 7, the water quantity change signal is analyzed, the water quantity value and the corresponding time value in the water quantity change signal are obtained, the initial water quantity value is obtained, and the time value of the initial time is recorded.

[0091] The back-end water quantity value and the time difference between the back-end time and the initial time are compared.

[0092] If the back-end water quantity value is higher than the water quantity threshold value, and the time difference between the back-end time and the initial time is less than the time threshold value, the back-end water quantity value is continuously updated.

[0093] If the back-end water quantity value is higher than the water quantity threshold value, and the time difference between the back-end time and the initial time is greater than the time threshold value, it is determined that the information is valid.

[0094] If the back-end water quantity value is lower than the water quantity threshold value, it is determined as invalid information, and the acquisition of the initial water quantity value is re-performed.

[0095] Through the above analysis, only when all the received back-end water quantity values in the continuous time period exceeding the time threshold value are greater than the water quantity threshold value, the controller can give a signal to open the fire-fighting mode of the electric gate valve 8.

[0096] After the electric gate valve 8 is opened in the fire-fighting mode, the main fire-fighting pipeline 2 of the first assembly is in conduction with the shunt filter 5, the water source enters the first assembly, the first sprinkler (i.e. the middle ring pipeline and the low ring pipeline) connected with the main fire-fighting pipeline 2 sprays the middle and lower parts of the storage tank 12 twice, and finally the fire is extinguished.

[0097] The water quantity is maintained at a high level for a certain period of time, and a signal to open the fire-fighting mode of the electric gate valve 8 is given to avoid misoperation or related interference, so as to achieve the purpose of precise control of the storage tank sprinkling fire-fighting.

[0098] In addition, in the process of the storage tank sprinkling fire-fighting cooling, in order to improve the safety, reliability and redundancy requirements of the storage tank sprinkling system, a button manual control mode is also provided on the deluge valve control cabinet. When the deluge valve control cabinet fails in the automatic control of PLC and HMI, remote control can still be performed.

[0099] The controller is connected with the UPS power circuit, and the electric gate valve 8 is connected with the dual-power explosion-proof emergency power box circuit.

[0100] The electric gate valve 8 is also connected with the emergency button circuit, and a manual control mode with an emergency button is provided. When the deluge valve control cabinet fails in the automatic control of PLC and HMI, local remote control can still be performed. The emergency button can be set at a position more than 15m away from the storage tank, so as to realize local safe operation in emergency situations.

[0101] In actual scenarios, in addition to normal operation, there are other unexpected situations that cause no fire-fighting water in the underground sprinkling main pipe 1 of the chemical warehouse area, which cannot achieve the purpose of fire-fighting cooling of the storage tank.

[0102] Therefore, the controller is also connected in communication with the DCS system of the chemical warehouse area, and the DCS system of the chemical warehouse area is connected in communication with the management platform of the chemical warehouse area. The deluge valve control cabinet and the warehouse area DCS system communicate with each other, so that the related systems can be integrated on the DCS for remote monitoring and operation, and centralized processing of unexpected situations can be realized.

[0103] In addition, the embodiment further adds intelligent identification interlocking and alarm pushing functions, the rain valve control cabinet and the DCS system are in instant communication, the DCS system is connected with the intelligent safety warehouse area management platform (APP) through a server, the devices and facilities of other systems in the warehouse area can be managed on the intelligent safety warehouse area management platform, so that the storage tank spraying system, the video monitoring system and the fire alarm system are associated with each other, in addition, the relevant alarm can be pushed to the handheld terminal of the operation user, and the intelligent remote monitoring and control function of the chemical product storage tank spraying is realized.

[0104] As shown in Figure 4 The application further provides a storage tank spraying method for a chemical warehouse area, which adopts the storage tank spraying system for the chemical warehouse area, and specifically comprises the following steps:

[0105] The water source is connected, and the second component is filled with spraying water;

[0106] The second nozzle receives and responds to the fire fighting request, and initiates the initial spraying of the storage tank 12;

[0107] The controller receives the water amount change signal of the transmission pipe 3 in the initial spraying process, and controls the first nozzle to perform secondary spraying on the storage tank 12.

[0108] The storage tank spraying system has the functions of safety, redundancy and intelligence by setting the active and passive spraying components, the passive component responds first, and then the active component is controlled to be opened based on the processing of the passive water amount change signal, so that the intelligent control of the chemical warehouse area storage tank fire fighting is realized, and the human error rate and the failure rate of the storage tank spraying system are greatly reduced.

[0109] Although the preferred embodiments of the application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all changes and modifications falling within the scope of the application. Obviously, those skilled in the art can make various modifications and changes to the application without departing from the spirit and scope of the application. Thus, if these modifications and changes of the application fall within the scope of the claims of the application and their equivalent technologies, the application also intends to include these modifications and changes.

Claims

1. A tank spraying system for chemical storage areas, characterized in that, include: First component, second component, diversion filter and controller; The first component includes the main fire-fighting pipe and the first sprinkler head; the second component includes the transmission pipe and the second sprinkler head; and the diversion filter includes a water source inlet and an outlet. One end of the main fire-fighting pipe is connected to the outlet of the diversion filter, and the other end is connected to the first sprinkler head. One end of the transmission pipe is connected to the outlet of the diversion filter, and the other end is connected to the second sprinkler head. The second component is filled with spray water, and the second nozzle receives and responds to the fire request to start the initial spray on the storage tank; the controller receives the water volume change signal in the transmission pipe during the initial spray to control the first nozzle to spray the storage tank a second time. Starting from the outlet of the diversion filter, a pressure transmitter assembly and a flow assembly are sequentially installed on the transmission pipe; the main fire-fighting pipeline is equipped with an electric gate valve, which is located at the rear end of the outlet of the diversion filter. The controller is communicatively connected to the pressure transmitter assembly, flow meter assembly, and electric gate valve. The controller receives pressure data transmitted from the pressure transmitter assembly and water flow change signals from the flow meter assembly, analyzes the data, and responds by issuing an opening command to the electric gate valve. Specifically, this includes: The controller receives pressure data transmitted by the pressure transmitter component in real time. If the pressure data reaches a predetermined value, it starts to receive water volume change signals transmitted by the flow component in real time. Analyze the water volume change signal to obtain the water volume value and the corresponding time value in the water volume change signal; Determine the initial water volume value and record the initial time value. The initial water volume value is the first water volume value when the water volume value is higher than the water volume threshold, and the initial time value is the time value corresponding to the initial water volume value. By comparing the back-end water volume value with the water volume threshold, and the time difference between the back-end time and the initial time, if all the received back-end water volume values ​​are greater than the water volume threshold within a continuous time period in which the time difference exceeds the time threshold, it is determined to be valid information for opening the electric gate valve fire-fighting mode, and an opening command for controlling the electric gate valve is given. Here, the back-end time is the time when the water volume change signal is collected in real time after the initial time, and the back-end water volume value is the water volume value corresponding to the back-end time.

2. The tank spraying system for chemical storage areas as described in claim 1, characterized in that, The diversion filter is a Y-type filter, and a gate valve is installed at the front end of the water source inlet of the Y-type filter to control the flow of water into the Y-type filter.

3. The tank spraying system for chemical storage areas as described in claim 1 or 2, characterized in that, The water source is connected to the tank spraying system through the underground spraying trunk line of the main chemical storage area.

4. The tank spraying system for chemical storage areas as described in claim 1, characterized in that, The first nozzle includes a middle section ring pipe and a lower section ring pipe, both of which are located on the outer periphery of the tank sidewall; the second nozzle is a closed-loop nozzle, located above the top of the tank, with multiple evenly distributed glass tubes installed on the lower edge of the closed-loop nozzle. The glass tube receives the fire request from the storage tank. When the glass tube breaks, the closed-loop sprinkler head sprays water from the broken glass tube location to initially spray the storage tank.

5. The tank spraying system for chemical storage areas as described in claim 1, characterized in that, The controller is connected to the UPS power supply circuit, and the electric gate valve is connected to the dual-power explosion-proof emergency power box circuit; the electric gate valve is also connected to the emergency button circuit.

6. The tank spraying system for chemical storage areas as described in claim 1, characterized in that, The controller is connected to the DCS system in the chemical storage area, and the DCS system in the chemical storage area is connected to the management platform of the chemical storage area.

7. A method for spraying water onto storage tanks in a chemical storage area, characterized in that, The tank spraying system used in chemical storage areas as described in any one of claims 1-6 specifically includes the following steps: Connect the water source and fill the second component with spray water; The second sprinkler head receives and responds to the fire request, and initiates the initial spraying of the storage tank; The controller receives the water volume change signal from the transmission pipe during the initial spraying process and controls the first nozzle to spray the storage tank a second time.

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