Water mist spraying system

Abstract

The invention relates to a water mist spraying system. The water mist spraying system comprises an ammonia gas concentration detector and a water mist spraying device which are mounted in an ammonia gas leakage space, the chemical agent solution storage device and the first remote control electromagnetic valve are sequentially mounted on the first liquid pipeline; the fresh water storage device, the second remote control electromagnetic valve, the first spraying pump and the water mist spraying device are sequentially mounted on the second liquid pipeline; the control device is used for controlling the first remote control electromagnetic valve to be opened when the ammonia concentration detector detects that the ammonia concentration exceeds a preset safety threshold value, the first pump starter starts the first spraying pump, and after a chemical agent solution is sucked from the chemical agent solution storage device, the chemical agent solution is conveyed to the water mist spraying device through the first liquid pipeline and the second liquid pipeline to be sprayed. And when the fresh water is lower than the threshold value, the second remote control electromagnetic valve is controlled to be opened, and fresh water is pumped from the fresh water storage device and then conveyed to the water mist spraying device through the second liquid pipeline for spraying. According to the application, the ammonia gas leaked in the closed space can be quickly adsorbed and eliminated.

Description

Technical Field

[0001] The present application relates to the field of ship technology, and in particular to a water mist spray system. Background Art

[0002] For ships that use ammonia fuel as fuel for marine diesel engines, there may be a large amount of ammonia leakage in closed spaces such as the ammonia fuel preparation room due to accidents. Since ammonia is a toxic substance, when the ammonia concentration in the air reaches a certain level, it is easy to cause risks such as poisoning of personnel and even fire and explosion. How to quickly absorb and eliminate the ammonia leakage in the closed space of the ship is an urgent problem to be solved. Summary of the invention

[0003] In view of the above problems in the prior art, the present application provides a water mist spray system to quickly absorb and eliminate ammonia leaked in the closed space of a ship.

[0004] To achieve the above-mentioned object, the first aspect of the present application provides a water mist spray system, comprising: an ammonia concentration detector, a control device, a chemical solution storage device, a fresh water storage device, a first remote control solenoid valve, a second remote control solenoid valve, a first pump starter, a first spray pump, and a water mist spray device;

[0005] The ammonia concentration detector and the water mist spray device are installed in the ammonia leakage space;

[0006] The chemical solution storage device and the first remote control solenoid valve are sequentially installed on the first liquid pipeline;

[0007] The fresh water storage device, the second remote control solenoid valve, the first spray pump, and the water mist spray device are sequentially installed on the second liquid pipeline; wherein the first liquid pipeline is connected to the second liquid pipeline, and the connection point between the first liquid pipeline and the second liquid pipeline is between the second remote control solenoid valve and the first spray pump;

[0008] The ammonia concentration detector is used to: detect the ammonia concentration in the ammonia leakage space, and when the ammonia concentration exceeds a preset safety threshold, transmit an alarm signal to the control device;

[0009] The control device is used to: control the first remote control solenoid valve to open and the second remote control solenoid valve to close according to the alarm signal, control the first pump starter to automatically start the first spray pump, and then suck the chemical solution from the chemical solution storage device and transport it to the water mist spray device through the first liquid pipeline and the second liquid pipeline for spraying; when the ammonia concentration is lower than the preset safety threshold after spraying, control the second remote control solenoid valve to open and the first remote control solenoid valve to close, and then suck fresh water from the fresh water storage device and transport it to the water mist spray device through the second liquid pipeline for spraying.

[0010] From the above, the present application adopts a combination of chemical reaction method and physical absorption method, that is, first use chemical agent to spray ammonia, and when the ammonia concentration quickly and significantly drops to the preset safety threshold, switch to fresh water to continue spraying ammonia, so as to achieve rapid adsorption and elimination of ammonia leaked in the closed space of the ship.

[0011] As a possible implementation of the first aspect, the invention further includes: a third remote control solenoid valve installed on the second liquid pipeline before the water mist spraying device;

[0012] When the ammonia concentration exceeds a preset safety threshold, the control device controls the opening.

[0013] As a possible implementation of the first aspect, the method further includes: a first stop check valve and a second stop check valve;

[0014] The first stop check valve is installed on the first liquid pipeline between the chemical solution storage device and the first remote control solenoid valve;

[0015] The second stop check valve is installed on the second liquid pipeline between the fresh water storage device and the second remote control solenoid valve;

[0016] The first stop check valve and the second stop check valve are both set to a normally open state.

[0017] As a possible implementation of the first aspect, the method further includes: a first stop valve and a first check valve;

[0018] The first stop valve and the first check valve are sequentially installed on the second liquid pipeline between the first spray pump and the water mist spray device;

[0019] The first stop valve and the first check valve are both set to a normally open state.

[0020] As a possible implementation of the first aspect, the method further includes: a standby pump conversion pressure switch, a second pump starter, a second spray pump, a second stop valve and a second check valve;

[0021] The second spray pump, the second stop valve and the second check valve are sequentially installed on the third liquid pipeline, the third liquid pipeline is connected to the second liquid pipeline, the first connection point between the third liquid pipeline and the second liquid pipeline is before the first spray pump, and the second connection point between the third liquid pipeline and the second liquid pipeline is after the first check valve; the second stop valve and the second check valve are both set to a normally open state;

[0022] The backup pump conversion pressure switch is installed on the second liquid pipeline after the first spray pump, and is used to trigger a signal to the control device to control the second pump starter to automatically start the second spray pump when the first spray pump fails and the pressure is detected to be lower than a preset pressure threshold.

[0023] As a possible implementation of the first aspect, it also includes: a filter installed on the second liquid pipeline between the check valve and the water mist spray device, and used to filter impurities in the liquid flowing through the second liquid pipeline.

[0024] As a possible implementation of the first aspect, the method further includes: a first relief valve and / or a second relief valve;

[0025] The first discharge valve is installed on the second liquid pipeline after the second remote control solenoid valve;

[0026] The second discharge valve is installed on the second liquid pipeline after the filter;

[0027] The first relief valve and / or the second relief valve are installed at the lowest point of the second liquid pipeline.

[0028] As a possible implementation of the first aspect, the method further includes: a first liquid level switch and / or a second liquid level switch installed in the chemical solution storage device;

[0029] The first liquid level switch is used to: alarm when detecting that the liquid level of the chemical solution in the chemical solution storage device is lower than a first preset value, and convert the current liquid level state of the chemical solution into an electrical signal and transmit it to the control device;

[0030] The second liquid level switch is used to: sound an alarm when detecting that the liquid level of the chemical solution is lower than a second preset value, and convert the current liquid level state of the chemical solution into an electrical signal and transmit it to the control device, so that the control device switches to fresh water spraying;

[0031] The second preset value is smaller than the first preset value.

[0032] As a possible implementation of the first aspect, the method further includes: a third liquid level switch and / or a fourth liquid level switch, installed in the fresh water storage device;

[0033] The third liquid level switch is used to: alarm when detecting that the fresh water level in the fresh water storage device is lower than a third preset value, and convert the current fresh water level state into an electrical signal and transmit it to the control device;

[0034] The fourth liquid level switch is used to: alarm when it is detected that the fresh water level in the fresh water storage device is lower than a fourth preset value, and convert the current fresh water level state into an electrical signal and transmit it to the control device, so that the control device controls the first pump starter to turn off the first spray pump;

[0035] The fourth preset value is smaller than the third preset value.

[0036] As a possible implementation of the first aspect, it also includes: a vacuum pressure gauge and / or a pressure gauge;

[0037] The vacuum pressure gauge is installed on the second liquid pipeline before the first spray pump;

[0038] The pressure gauge is installed on the second liquid pipeline after the first spray pump.

[0039] To achieve the above-mentioned object, the second aspect of the present application provides a water mist spraying method, which is applied to a control device, comprising:

[0040] When the ammonia concentration detector detects that the ammonia concentration in the ammonia leakage space exceeds the preset safety threshold, the first remote control solenoid valve is controlled to open and the second remote control solenoid valve is closed according to the alarm signal sent by the received ammonia concentration detector, and the first pump starter is controlled to automatically start the first spray pump, and the chemical solution is sucked from the chemical solution storage device and then transported to the water mist spray device through the first liquid pipeline and the second liquid pipeline for spraying; when the ammonia concentration after spraying is lower than the preset safety threshold, the second remote control solenoid valve is controlled to open and the first remote control solenoid valve is closed, and fresh water is sucked from the fresh water storage device and then transported to the water mist spray device through the second liquid pipeline for spraying;

[0041] Wherein, the ammonia concentration detector and the water mist spray device are installed in the ammonia leakage space;

[0042] The chemical solution storage device and the first remote control solenoid valve are sequentially installed on the first liquid pipeline;

[0043] The fresh water storage device, the second remote control solenoid valve, the first spray pump, and the water mist spray device are installed on the second liquid pipeline in sequence; wherein, the first liquid pipeline is connected to the second liquid pipeline, and the connection point between the first liquid pipeline and the second liquid pipeline is between the second remote control solenoid valve and the first spray pump.

[0044] A third aspect of the present application provides a computing device, including:

[0045] processor, and

[0046] A memory having program instructions stored thereon, wherein when the program instructions are executed by the processor, the processor executes any of the methods described in the second aspect above.

[0047] A fourth aspect of the present application provides a computer-readable storage medium having program instructions stored thereon, wherein when the program instructions are executed by a computer, the computer implements any of the methods described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic structural diagram of a water mist spray system provided in an embodiment of the present application;

[0049] in:

[0050] 1-Chemical cabinet storage cabinet

[0051] 2-Fresh water tank

[0052] 3-NO.1 Water spray pump

[0053] 4-NO.2 water spray pump

[0054] 5-Chemical Stop Check Valve

[0055] 6-Fresh water stop check valve

[0056] 7-First remote control solenoid valve

[0057] 8-Second remote control solenoid valve

[0058] 9-First manual stop valve

[0059] 10-First check valve

[0060] 11-Second manual stop valve

[0061] 12-Second check valve

[0062] 13-Y type filter

[0063] 14-Third remote control solenoid valve

[0064] 15-Water mist spray nozzle set

[0065] 16-Chemical cabinet suction port

[0066] 17-Fresh water tank suction port

[0067] 18-Chemical cabinet low level switch

[0068] 19-Chemical cabinet low-low liquid level switch

[0069] 20-Fresh water tank low level switch

[0070] 21-Fresh water tank low-low level switch

[0071] 22-Vacuum pressure gauge

[0072] 23-Pressure gauge

[0073] 24-Standby pump changeover pressure switch

[0074] 25-First relief valve

[0075] 26-Second relief valve

[0076] 27-Test valve

[0077] 28-Ammonia concentration detector

[0078] Figure 2 It is a structural schematic diagram of a computing device provided in an embodiment of the present application.

[0079] It should be understood that the size and shape of each block diagram in the above structural diagram are for reference only and should not constitute an exclusive interpretation of the embodiment of the present invention. The relative position and inclusion relationship between the blocks presented in the structural diagram are only schematic representations of the structural association between the blocks, and do not limit the physical connection method of the embodiment of the present invention. DETAILED DESCRIPTION

[0080] The technical solution provided by the present application is further described below with reference to the accompanying drawings and examples. It should be understood that the system structure and business scenarios provided in the examples of the present application are mainly to illustrate the possible implementation methods of the technical solution of the present application and should not be interpreted as the only limitation on the technical solution of the present application. It is known to those of ordinary skill in the art that with the evolution of the system structure and the emergence of new business scenarios, the technical solution provided by the present application is also applicable to similar technical problems.

[0081] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present application. In case of any inconsistency, the meaning described in this specification or the meaning derived from the contents recorded in this specification shall prevail. In addition, the terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0082] [Example of water mist spray system]

[0083] Taking advantage of the fact that ammonia is very soluble in water, fresh water can be simply used to spray the ammonia fuel preparation room with fresh water, so that the leaked ammonia is dissolved in water to form ammonia water. However, the absorption effect of clean water on ammonia is limited. Clean water can only absorb ammonia until the component partial pressure of ammonia is slightly higher than the equilibrium partial pressure of ammonia in the solution. And the absorption process is relatively long, and the effect cannot be fully guaranteed. At the same time, the capacity of the fresh water tank on the ship is limited, which also limits the adsorption time. In order to greatly reduce the use of fresh water, shorten the water spraying time, and improve the ammonia absorption effect, this application adopts a combination of two methods: one is to atomize water, and use a fine water mist nozzle arrangement in the room to atomize fresh water into fine water mist, increase the contact area between gas and liquid, and thus increase the dissolution rate of ammonia; the second is, according to the characteristics of ammonia that can react chemically with acidic substances and is easily soluble in water, add acidic chemical additives to fresh water, and use chemical reactions to reduce the concentration of ammonia in the liquid, thereby improving the absorption efficiency of ammonia. The present application utilizes fine water mist containing acidic chemical additives to decontaminate ammonia in a ship system, which can greatly improve the decontamination efficiency and overcome the shortcoming that fresh water decontaminates ammonia incompletely. At the same time, the adsorbed water falls to the ground to form ammonia-containing bilge water. The addition of acidic additives can also neutralize the ammonia content of the ammonia-containing bilge water on the ship and reduce the ammonia concentration in the ammonia-containing bilge water tank. This achieves the purpose of quickly reducing the ammonia concentration in the room to a safe range, reducing the safety risk of operators, and ensuring the safety of ships and personnel.

[0084] Based on this, the first embodiment of the present application provides a water mist spray system, which includes: an ammonia concentration detector, a control device, a chemical solution storage device, a fresh water storage device, a first remote control solenoid valve, a second remote control solenoid valve, a first pump starter, a first spray pump, and a water mist spray device;

[0085] The ammonia concentration detector and the water mist spray device are installed in the ammonia leakage space;

[0086] The chemical solution storage device and the first remote control solenoid valve are sequentially installed on the first liquid pipeline;

[0087] The fresh water storage device, the second remote control solenoid valve, the first spray pump, and the water mist spray device are sequentially installed on the second liquid pipeline; wherein the first liquid pipeline is connected to the second liquid pipeline, and the connection point between the first liquid pipeline and the second liquid pipeline is between the second remote control solenoid valve and the first spray pump;

[0088] The ammonia concentration detector is used to: detect the ammonia concentration in the ammonia leakage space, and when the ammonia concentration exceeds a preset safety threshold, transmit an alarm signal to the control device;

[0089] The control device is used to: control the first remote control solenoid valve to open and the second remote control solenoid valve to close according to the alarm signal, control the first pump starter to automatically start the first spray pump, and then suck the chemical solution from the chemical solution storage device and transport it to the water mist spray device through the first liquid pipeline and the second liquid pipeline for spraying; when the ammonia concentration is lower than the preset safety threshold after spraying, control the second remote control solenoid valve to open and the first remote control solenoid valve to close, and then suck fresh water from the fresh water storage device and transport it to the water mist spray device through the second liquid pipeline for spraying.

[0090] Among them, Figure 1 As shown, the ammonia concentration detector 28 is installed in the ammonia leakage space, that is, in a closed space such as the ammonia fuel preparation room. The ammonia concentration detector 28 can send an audible and visual alarm when it detects that the concentration of leaked ammonia exceeds a preset safety threshold. The ammonia concentration detector 28 is connected to the control device through a signal and can send an alarm signal to the control device. The alarm signal may be a switch signal (for example, changing from a low level to a high level) to indicate that the ammonia concentration has exceeded the safety range.

[0091] Among them, Figure 1 As shown, the control device and the first pump starter (i.e., pump starter No. 1) are located Figure 1 The control device can be considered as the water mist control box. The control device can receive the alarm signal sent by the ammonia concentration detector 28, and then automatically perform a series of operations according to the internal program based on the alarm signal. For example, the first pump starter is controlled to automatically start the first spray pump, and the chemical solution is sucked from the chemical solution storage device and then transported to the water mist spray device through the first liquid pipeline and the second liquid pipeline for spraying; when the ammonia concentration after spraying is lower than the preset safety threshold, the second remote control solenoid valve is controlled to open, the first remote control solenoid valve is closed, and fresh water is sucked from the fresh water storage device and then transported to the water mist spray device through the second liquid pipeline for spraying.

[0092] Among them, the chemical solution storage device is Figure 1 The chemical cabinet storage cabinet 29 in the chemical cabinet stores weak acid chemicals, which can react chemically with ammonia to reduce the concentration of ammonia in the liquid, thereby improving the absorption efficiency of ammonia. Figure 1 As shown, there is a chemical cabinet suction port 16 in the chemical cabinet storage cabinet 29, and the weakly acidic chemical can be sucked into the first liquid pipeline where the chemical solution storage device is located through the chemical cabinet suction port 16. There are many different types and concentrations of chemical agents to choose from, and additives with different physical properties, different pH values ​​and different concentrations can be selected according to the actual use of the ammonia leakage site.

[0093] In some embodiments, it further includes: a first liquid level switch and / or a second liquid level switch installed in the chemical solution storage device;

[0094] The first liquid level switch is used to: alarm when detecting that the liquid level of the chemical solution in the chemical solution storage device is lower than a first preset value, and convert the current liquid level state of the chemical solution into an electrical signal and transmit it to the control device;

[0095] The second liquid level switch is used to: sound an alarm when detecting that the liquid level of the chemical solution is lower than a second preset value, and convert the current liquid level state of the chemical solution into an electrical signal and transmit it to the control device, so that the control device switches to fresh water spraying;

[0096] The second preset value is smaller than the first preset value.

[0097] Among them, Figure 1 As shown, the first liquid level switch is Figure 1 The chemical cabinet low level switch 18 in the chemical cabinet can continuously monitor the liquid level of the chemical in the chemical cabinet storage cabinet 29 to ensure that it remains within a safe operating range. Once the liquid level of the chemical in the chemical cabinet storage cabinet 29 is lower than the set value (first preset value), a low liquid level alarm is immediately issued, which can notify the operator to replenish the chemicals in time. It can be integrated with the control system to realize an automated replenishment process, such as starting a pumping system. The current chemical solution level state can also be converted into an electrical signal and transmitted to the control device, and the control device records the information.

[0098] like Figure 1 As shown, the second liquid level switch is Figure 1 The chemical cabinet low-low level switch 19 (Low-LowLevel Switch) in the chemical cabinet continuously monitors the liquid level of the chemical in the chemical cabinet storage cabinet 29 to ensure that it remains within a safe operating range. Once the liquid level of the chemical in the chemical cabinet storage cabinet 29 is lower than the set value (the second preset value is less than the first preset value), a low-low liquid level alarm is issued, and at the same time, the low-low liquid level alarm is converted into an electrical signal and transmitted to the control device, which automatically switches to the fresh water spray system. Similarly, the alarm can further notify the operator to replenish chemicals as soon as possible.

[0099] Among them, the fresh water storage device is Figure 1 The fresh water tank 2 in the tank is used to store fresh water. Taking advantage of the fact that ammonia is easily soluble in water, it is used to spray fresh water on the ammonia fuel preparation room, so that the leaked ammonia is dissolved in water to form ammonia water. Figure 1 As shown, there is a fresh water tank suction port 17 in the fresh water tank 2, and fresh water can be sucked from the fresh water tank suction port 17 into the second liquid pipeline where the fresh water storage device is located.

[0100] In some embodiments, it further includes: a third liquid level switch and / or a fourth liquid level switch, installed in the fresh water storage device;

[0101] The third liquid level switch is used to: alarm when detecting that the fresh water level in the fresh water storage device is lower than a third preset value, and convert the current fresh water level state into an electrical signal and transmit it to the control device;

[0102] The fourth liquid level switch is used to: alarm when it is detected that the fresh water level in the fresh water storage device is lower than a fourth preset value, and convert the current fresh water level state into an electrical signal and transmit it to the control device, so that the control device controls the first pump starter to turn off the first spray pump;

[0103] The fourth preset value is smaller than the third preset value.

[0104] Among them, Figure 1 As shown, the third liquid level switch is Figure 1 The low liquid level switch 20 in the fresh water tank can send out a low liquid level alarm when the fresh water capacity is lower than the set value (i.e., the third preset value), and the alarm can notify the operator to replenish fresh water in time. It can be integrated with the control system to realize an automated fresh water replenishment process. The current fresh water level state can be converted into an electrical signal and transmitted to the control device, and the control device records the information.

[0105] like Figure 1 As shown, the fourth liquid level switch is Figure 1 The low-low liquid level switch 21 of the fresh water tank can issue a low-low liquid level alarm when the fresh water capacity is lower than the set value (i.e., the fourth preset value is less than the third preset value), and when the low-low liquid level alarm is issued, the current fresh water level state is converted into an electrical signal and transmitted to the control device (i.e., the water mist main control box) to control the first pump starter to automatically stop the first spray pump. Among them, the water level height of the low-low liquid level alarm should meet the minimum required water level capacity for water mist fire extinguishing when the engine room is on fire.

[0106] In some embodiments, it further includes: a first stop check valve and a second stop check valve;

[0107] The first stop check valve is installed on the first liquid pipeline between the chemical solution storage device and the first remote control solenoid valve;

[0108] The second stop check valve is installed on the second liquid pipeline between the fresh water storage device and the second remote control solenoid valve;

[0109] The first stop check valve and the second stop check valve are both set to a normally open state.

[0110] Among them, Figure 1As shown, after the control device receives the alarm signal sent by the ammonia concentration detector 28, it will first control the opening of the first remote control solenoid valve 7, so that the weak acid chemical agent can be sucked into the first liquid pipeline from the chemical agent cabinet suction port 16. The first stop check valve (i.e., chemical agent stop check valve) 5 installed at the same time has the functions of a stop valve and a check valve, and can manually control the opening and closing of the fluid, and automatically close when the fluid flows in the reverse direction to prevent backflow.

[0111] like Figure 1 As shown, when the first remote control solenoid valve 7 is initially opened, the second remote control solenoid valve 8 will be closed. When the ammonia concentration is lower than the preset safety threshold after the chemical agent is sprayed, the second remote control solenoid valve 8 will be controlled to open and the first remote control solenoid valve 7 will be closed, so that fresh water can be sucked into the second liquid pipeline from the fresh water tank suction port 17. The second stop check valve (i.e., fresh water stop check valve) 6 installed at the same time has the functions of a stop valve and a check valve, and can manually control the opening and closing of the fluid, and automatically close when the fluid flows in reverse to prevent backflow.

[0112] In some embodiments, it further includes: a third remote control solenoid valve installed on the second liquid pipeline before the water mist spray device;

[0113] When the ammonia concentration exceeds a preset safety threshold, the control device controls the opening.

[0114] Among them, a third remote control solenoid valve 14 can also be installed on the second liquid pipeline near the water mist spray device. When the first remote control solenoid valve 7 and the third remote control solenoid valve 14 are initially opened at the same time, the second remote control solenoid valve 8 is closed. When the ammonia concentration is lower than the preset safety threshold after the chemical agent spraying, the second remote control solenoid valve 8 will be controlled to open and the first remote control solenoid valve 7 will be closed. At this time, the third remote control solenoid valve 14 is still in the open state, so that fresh water can also flow to the water mist spray device. The use of the third remote control solenoid valve 14 can achieve redundant protection, that is, provide an additional safety layer to ensure that even if the first remote control solenoid valve 7 and / or the second remote control solenoid valve 8 fails, it can still be effectively controlled by the third remote control solenoid valve 14.

[0115] Among them, Figure 1 As shown, the first pump starter, namely pump starter No. 1, and the first spray pump, namely NO. 1 water spray pump 3, after the control device receives the alarm signal sent by the ammonia concentration detector 28, will control pump starter No. 1 to automatically start NO. 1 water spray pump 3, which can generate suction to suck weak acid chemicals from the suction port 16 of the chemical cabinet into the first liquid pipeline, and suck fresh water from the suction port 17 of the fresh water tank into the second liquid pipeline.

[0116] In some embodiments, it further includes: a vacuum pressure gauge and / or a pressure gauge;

[0117] The vacuum pressure gauge is installed on the second liquid pipeline before the first spray pump;

[0118] The pressure gauge is installed on the second liquid pipeline after the first spray pump.

[0119] After the NO.1 water spray pump 3 is turned on and the weakly acidic chemical agent or fresh water is sucked in, the pressure in the second liquid pipeline needs to be detected. Figure 1 As shown, a vacuum pressure gauge 22 (PV) can be installed on the second liquid pipeline before the NO.1 water spray pump 3, or it can be installed on the inlet side of the NO.1 water spray pump 3. The vacuum pressure gauge 22 is used to measure the negative pressure (i.e., pressure lower than atmospheric pressure) at the inlet of the NO.1 water spray pump 3, which reflects the liquid suction capacity of the NO.1 water spray pump 3. If the vacuum degree is within the expected range, it indicates that the NO.1 water spray pump 3 can effectively extract liquid from the water source. If the vacuum degree is too low, it may mean that there is a leak in the inlet of the NO.1 water spray pump 3, the filter is clogged, or air enters the second liquid pipeline, affecting the suction performance of the NO.1 water spray pump 3. If the vacuum degree is too high, cavitation may occur, that is, the gas in the liquid precipitates to form bubbles, thereby destroying the impeller of the NO.1 water spray pump 3, and may cause insufficient flow.

[0120] like Figure 1 As shown, a pressure gauge 23 (PI) can also be installed on the second liquid pipeline after the NO.1 water spray pump 3, or it can be installed on the outlet side of the NO.1 water spray pump 3. The pressure gauge 23 is used to measure the pressure at the outlet of the NO.1 water spray pump 3, which directly reflects the ability of the NO.1 water spray pump 3 to deliver liquid to other parts. When the outlet pressure of the NO.1 water spray pump 3 is stabilized within a reasonable range, it means that the NO.1 water spray pump 3 is delivering liquid with the design parameters. When the pressure at the outlet of the NO.1 water spray pump 3 is too low, it may be caused by the failure of the NO.1 water spray pump 3, the pipeline is blocked, the valve is not fully opened, or the speed of the NO.1 water spray pump 3 is not enough, which affects the normal water supply. When the pressure at the outlet of the NO.1 water spray pump 3 is too high, it may indicate that the downstream pipeline resistance increases (such as nozzle blockage), the valve is improperly closed, or other factors that hinder the flow of liquid exist, or it may be because the output of the NO.1 water spray pump 3 exceeds the demand, adding unnecessary load.

[0121] In some embodiments, it further includes: a first stop valve and a first check valve;

[0122] The first stop valve and the first check valve are sequentially installed on the second liquid pipeline between the first spray pump and the water mist spray device;

[0123] The first stop valve and the first check valve are both set to a normally open state.

[0124] Among them, Figure 1 As shown, a first stop valve (i.e. Figure 1 The first manual stop valve) 9 and the first check valve 10 in the fluid pipeline system. The stop valve is mainly used in the fluid pipeline system to control the opening, closing or adjusting the flow of the fluid through manual operation. The main function of the check valve is to prevent the medium from flowing back. It is an automatic valve that relies on the pressure change of the medium itself to open or close, and does not require an external power source. The first stop valve (i.e. Figure 1 The first manual stop valve 9 and the first check valve 10 are the post-pump valves, which prevent the liquid in the pipeline from flowing back and facilitate equipment maintenance. In order to ensure the rapid and automatic start of the spray system, they are set to the normally open state.

[0125] Among them, Figure 1 As shown, the water mist spray device, namely the water mist spray nozzle group 15, includes a plurality of nozzles and is installed in the fuel preparation room. The water mist spray nozzle group usually has a very fine aperture to produce fine water mist particles, thereby effectively covering and washing away ammonia.

[0126] In some embodiments, it also includes: a filter installed on the second liquid pipeline between the check valve and the water mist spray device, and used to filter impurities in the liquid flowing through the second liquid pipeline.

[0127] Among them, Figure 1 As shown, the filter is Figure 1 The Y-type filter 13 in the spray nozzle group. Since the water mist spray nozzle group usually has a very fine pore size, if the solution contains large particles or impurities, it may cause the nozzle to be blocked, affecting the spraying effect or even completely failing. By filtering out possible solid particles through the Y-type filter 13, the wear and tear caused by these particles on the nozzle and other components (such as pipes, pumps, etc.) can be reduced, thereby extending the service life of the entire system. Of course, other types of filters can also be used.

[0128] In some embodiments, it further includes: a first relief valve and / or a second relief valve;

[0129] The first discharge valve is installed on the second liquid pipeline after the second remote control solenoid valve;

[0130] The second discharge valve is installed on the second liquid pipeline after the filter;

[0131] The first relief valve and / or the second relief valve are installed at the lowest point of the second liquid pipeline.

[0132] Among them, Figure 1As shown, a first discharge valve 25 and / or a second discharge valve 26 are installed at the lowest point of the second liquid pipeline to discharge the residual liquid in the pipeline. The second discharge valve 26 is located after the Y-type filter 13, so that the discharged fluid has been filtered by the Y-type filter 13, reducing the possibility of impurity discharge, which is more environmentally friendly and safe.

[0133] In some embodiments, the method further includes: a test valve installed between the second relief valve and the second liquid pipeline.

[0134] Among them, Figure 1 As shown, the test valve 27 is a valve for system testing, which is used to ensure the safety and reliability of the system and facilitate maintenance and testing.

[0135] In some embodiments, it further includes: a backup pump changeover pressure switch, a second pump starter, a second spray pump, a second stop valve, and a second check valve;

[0136] The second spray pump, the second stop valve and the second check valve are sequentially installed on the third liquid pipeline, the third liquid pipeline is connected to the second liquid pipeline, the first connection point between the third liquid pipeline and the second liquid pipeline is before the first spray pump, and the second connection point between the third liquid pipeline and the second liquid pipeline is after the first check valve; the second stop valve and the second check valve are both set to a normally open state;

[0137] The backup pump conversion pressure switch is installed on the second liquid pipeline after the first spray pump, and is used to trigger a signal to the control device to control the second pump starter to automatically start the second spray pump when the first spray pump fails and the pressure is detected to be lower than a preset pressure threshold.

[0138] Among them, Figure 1 As shown, a standby pump, i.e., a second pump starter (No. 2 pump starter) 4 and a second spray pump (i.e., NO. 2 water spray pump) 4, can be provided. At the same time, a standby pump conversion pressure switch 24 (PS) is provided. When the NO. 1 water spray pump 3 fails, the system pressure will drop. When the standby pump conversion pressure switch 24 detects that the pressure drops below the set value, it will trigger a signal and send it to the control device (i.e., the water mist main control box). After receiving the trigger signal, the control device controls the No. 2 pump starter to start the NO. 2 water spray pump 4, and the system pressure returns to the normal range. This plays the role of standby pump switching.

[0139] Likewise, Figure 1 As shown, the second (manual) stop valve 11 and the second check valve 12 also need to be installed on the spare third liquid pipeline. The second (manual) stop valve 11 and the second check valve 12 are pump back valves, which play the role of preventing liquid backflow in the pipeline and facilitating equipment maintenance. In order to ensure the rapid automatic startup of the spray system, they are all set to the normally open state.

[0140] From the above, this application adopts a dual mode safety guarantee: chemical reaction plus physical absorption dual spraying and adsorption, that is, first use chemical agents to spray ammonia, and when the ammonia concentration is rapidly and significantly reduced to the preset safety threshold, switch to fresh water to continue fresh water spraying ammonia to ensure the absorption effect of ammonia-containing mixed gas or gas-liquid mixture, so as to achieve rapid adsorption and elimination of ammonia leaked in the closed space of the ship, ensuring the safety of personnel and ship operation. At the same time, the full-condition automatic control spraying is adopted, which can automatically and comprehensively control according to information such as ammonia concentration and tank liquid level, which not only ensures that the ammonia concentration in the room is lower than the control value, but also effectively reduces the water consumption and the amount of ammonia-containing bilge water produced, and reduces the ammonia bilge water tank's space requirements for the ship.

[0141] The specific working process of the water mist spray system in this application is as follows:

[0142] When the ammonia concentration detector 28 detects that the ammonia concentration in the fuel preparation room exceeds the preset safety threshold, it will issue an audible and visual alarm and transmit the alarm signal to the water mist main control box (i.e., the control device). The water mist main control box automatically opens the first remote control solenoid valve 7 and the third remote control solenoid valve 14, and closes the second remote control solenoid valve 8 at the same time; the No. 1 pump starter is used to automatically start the NO. 1 water spray pump 3, and the solution containing the weak acid additive is sucked into the pipeline from the suction port 16 of the chemical cabinet through the normally open chemical stop check valve 5. Then, the impurities in the solution containing the weak acid additive are filtered out by the Y-type filter 13, and the solution is transported to the water mist spray nozzle group 15 arranged in the fuel preparation room, and the water mist is released to the entire fuel preparation room to quickly wash and disinfect the ammonia. After the ammonia concentration detector 28 detects that the ammonia concentration has dropped to a preset safety threshold, it will send a signal to the water mist main control box (i.e., the control device), and the water mist main control box will remotely open the second remote control solenoid valve 8, close the first remote control solenoid valve 7, and draw fresh water from the fresh water tank 2 from the fresh water tank suction port 17 through the normally open fresh water stop check valve 6 as an adsorption solution into the pipeline, and transport it to the water mist spray nozzle group 15 arranged in the fuel preparation room to continue spraying the room with fresh water.

[0143] [Embodiment of water mist spraying method]

[0144] The present application provides a water mist spraying method, which is applied to a control device, comprising:

[0145] When the ammonia concentration detector detects that the ammonia concentration in the ammonia leakage space exceeds the preset safety threshold, the first remote control solenoid valve is controlled to open and the second remote control solenoid valve is controlled to close, and the first pump starter is controlled to automatically start the first spray pump, and the chemical solution is sucked from the chemical solution storage device and then transported to the water mist spray device through the first liquid pipeline and the second liquid pipeline for spraying; when the ammonia concentration after spraying is lower than the preset safety threshold, the second remote control solenoid valve is controlled to open and the first remote control solenoid valve is controlled to close, and fresh water is sucked from the fresh water storage device and then transported to the water mist spray device through the second liquid pipeline for spraying;

[0146] Wherein, the ammonia concentration detector and the water mist spray device are installed in the ammonia leakage space;

[0147] The chemical solution storage device and the first remote control solenoid valve are sequentially installed on the first liquid pipeline;

[0148] The fresh water storage device, the second remote control solenoid valve, the first spray pump, and the water mist spray device are installed on the second liquid pipeline in sequence; wherein, the first liquid pipeline is connected to the second liquid pipeline, and the connection point between the first liquid pipeline and the second liquid pipeline is between the second remote control solenoid valve and the first spray pump.

[0149] [Embodiment of the computing device of the present application]

[0150] Figure 2 900 is a schematic structural diagram of a computing device 900 provided in an embodiment of the present application. The computing device can be used as a control device in a water mist spraying system to execute the optional embodiments of the above water mist spraying method. The computing device can be a terminal or a chip or chip system inside the terminal. Figure 2 As shown, the computing device 900 includes: a processor 910 , a memory 920 , and a communication interface 930 .

[0151] It should be understood that Figure 2 The communication interface 930 in the computing device 900 shown may be used to communicate with other devices, and may specifically include one or more transceiver circuits or interface circuits.

[0152] The processor 910 may be connected to a memory 920. The memory 920 may be used to store the program code and data. Therefore, the memory 920 may be a storage unit inside the processor 910, or an external storage unit independent of the processor 910, or a component including a storage unit inside the processor 910 and an external storage unit independent of the processor 910.

[0153] Optionally, the computing device 900 may further include a bus. The memory 920 and the communication interface 930 may be connected to the processor 910 via the bus. The bus may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 2 A line without an arrow is used to represent the bus, but this does not mean that there is only one bus or one type of bus.

[0154] It should be understood that in the embodiment of the present application, the processor 910 may adopt a central processing unit (CPU). The processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. Alternatively, the processor 910 may adopt one or more integrated circuits to execute relevant programs to implement the technical solutions provided in the embodiment of the present application.

[0155] The memory 920 may include a read-only memory and a random access memory, and provides instructions and data to the processor 910. A portion of the processor 910 may also include a nonvolatile random access memory. For example, the processor 910 may also store information on the device type.

[0156] When the computing device 900 is running, the processor 910 executes the computer-executable instructions in the memory 920 to perform any operation step of the above method and any optional embodiment thereof.

[0157] It should be understood that the computing device 900 according to the embodiment of the present application can correspond to the corresponding subjects in the methods according to the embodiments of the present application, and the above-mentioned and other operations and / or functions of each module in the computing device 900 are respectively for implementing the corresponding processes of each method of the present embodiment. For the sake of brevity, they will not be repeated here.

[0158] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0159] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0160] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0161] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0162] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0163] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0164] An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, it is used to execute the above method, which includes at least one of the solutions described in the above embodiments.

[0165] The computer storage medium of the embodiment of the present application can adopt any combination of one or more computer-readable media. Computer-readable media can be computer-readable signal media or computer-readable storage media. Computer-readable storage media can be, for example, but not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or devices, or any combination of the above. More specific examples (non-exhaustive lists) of computer-readable storage media include: electrical connections with one or more wires, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above. In this document, computer-readable storage media can be any tangible medium containing or storing programs, which can be used by instruction execution systems, devices or devices or used in combination with them.

[0166] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, which carry computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0167] The program code embodied on the computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0168] Computer program code for performing the operation of the present application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (e.g., using an Internet service provider to connect through the Internet).

[0169] In addition, the words "first, second, third, etc." or module A, module B, module C and other similar terms in the specification and claims are only used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that the specific order or sequence can be interchanged where permitted so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0170] In the above description, the numbers representing the steps, such as S110, S120, etc., do not necessarily mean that the steps will be executed in this manner. If permitted, the order of the steps can be interchanged or they can be executed simultaneously.

[0171] The term "comprising" as used in the description and claims should not be interpreted as being limited to what is listed thereafter; it does not exclude other elements or steps. Therefore, it should be interpreted as specifying the presence of the features, integers, steps or components mentioned, but does not exclude the presence or addition of one or more other features, integers, steps or components and groups thereof. Therefore, the expression "a device comprising means A and B" should not be limited to a device consisting of components A and B only.

[0172] References to "one embodiment" or "an embodiment" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present application. Therefore, the phrases "in one embodiment" or "in an embodiment" appearing in various places in this specification do not necessarily refer to the same embodiment, but may refer to the same embodiment. In addition, in one or more embodiments, the particular features, structures, or characteristics can be combined in any appropriate manner, as would be apparent to one of ordinary skill in the art from this disclosure.

[0173] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may also include more other equivalent embodiments without departing from the concept of the present application, all of which belong to the scope of protection of the present application.

Claims

1. A water mist spray system, characterized in that: include: Ammonia concentration detector, control device, chemical solution storage device, fresh water storage device, first remote control solenoid valve, second remote control solenoid valve, first pump starter, first spray pump, water mist spray device; The ammonia concentration detector and the water mist spray device are installed in the ammonia leakage space; The chemical solution storage device and the first remote control solenoid valve are sequentially installed on the first liquid pipeline; The fresh water storage device, the second remote control solenoid valve, the first spray pump, and the water mist spray device are sequentially installed on the second liquid pipeline; wherein the first liquid pipeline is connected to the second liquid pipeline, and the connection point between the first liquid pipeline and the second liquid pipeline is between the second remote control solenoid valve and the first spray pump; The ammonia concentration detector is used to: detect the ammonia concentration in the ammonia leakage space, and when the ammonia concentration exceeds a preset safety threshold, transmit an alarm signal to the control device; The control device is used to: control the first remote control solenoid valve to open and the second remote control solenoid valve to close according to the alarm signal, control the first pump starter to automatically start the first spray pump, and then suck the chemical solution from the chemical solution storage device and transport it to the water mist spray device through the first liquid pipeline and the second liquid pipeline for spraying; when the ammonia concentration is lower than the preset safety threshold after spraying, control the second remote control solenoid valve to open and the first remote control solenoid valve to close, and then suck fresh water from the fresh water storage device and transport it to the water mist spray device through the second liquid pipeline for spraying.

2. The water mist spray system according to claim 1, characterized in that: Also includes: A third remote control solenoid valve is installed on the second liquid pipeline before the water mist spray device; When the ammonia concentration exceeds a preset safety threshold, the control device controls the opening.

3. The water mist spray system according to claim 1, characterized in that: Also includes: a first stop check valve and a second stop check valve; The first stop check valve is installed on the first liquid pipeline between the chemical solution storage device and the first remote control solenoid valve; The second stop check valve is installed on the second liquid pipeline between the fresh water storage device and the second remote control solenoid valve; The first stop check valve and the second stop check valve are both set to a normally open state.

4. The water mist spray system according to claim 1, characterized in that: Also includes: a first stop valve and a first check valve; The first stop valve and the first check valve are sequentially installed on the second liquid pipeline between the first spray pump and the water mist spray device; The first stop valve and the first check valve are both set to a normally open state.

5. The water mist spray system according to claim 4, characterized in that: Also includes: Standby pump changeover pressure switch, second pump starter, second spray pump, second stop valve and second check valve; The second spray pump, the second stop valve and the second check valve are sequentially installed on the third liquid pipeline, the third liquid pipeline is connected to the second liquid pipeline, the first connection point between the third liquid pipeline and the second liquid pipeline is before the first spray pump, and the second connection point between the third liquid pipeline and the second liquid pipeline is after the first check valve; the second stop valve and the second check valve are both set to a normally open state; The backup pump conversion pressure switch is installed on the second liquid pipeline after the first spray pump, and is used to trigger a signal to the control device to control the second pump starter to automatically start the second spray pump when the first spray pump fails and the pressure is detected to be lower than a preset pressure threshold.

6. The water mist spray system according to claim 4, characterized in that: Also includes: The filter is installed on the second liquid pipeline between the check valve and the water mist spray device, and is used to filter impurities in the liquid flowing through the second liquid pipeline.

7. The water mist spray system according to claim 6, characterized in that: Also includes: A first relief valve and / or a second relief valve; The first discharge valve is installed on the second liquid pipeline after the second remote control solenoid valve; The second discharge valve is installed on the second liquid pipeline after the filter; The first relief valve and / or the second relief valve are installed at the lowest point of the second liquid pipeline.

8. The water mist spray system according to claim 1, characterized in that: Also includes: A first liquid level switch and / or a second liquid level switch, installed in the chemical solution storage device; The first liquid level switch is used to: alarm when detecting that the liquid level of the chemical solution in the chemical solution storage device is lower than a first preset value, and convert the current liquid level state of the chemical solution into an electrical signal and transmit it to the control device; The second liquid level switch is used to: sound an alarm when detecting that the liquid level of the chemical solution is lower than a second preset value, and convert the current liquid level state of the chemical solution into an electrical signal and transmit it to the control device, so that the control device switches to fresh water spraying; The second preset value is smaller than the first preset value.

9. The water mist spray system according to claim 1, characterized in that: Also includes: A third liquid level switch and / or a fourth liquid level switch, installed in the fresh water storage device; The third liquid level switch is used to: alarm when detecting that the fresh water level in the fresh water storage device is lower than a third preset value, and convert the current fresh water level state into an electrical signal and transmit it to the control device; The fourth liquid level switch is used to: alarm when it is detected that the fresh water level in the fresh water storage device is lower than a fourth preset value, and convert the current fresh water level state into an electrical signal and transmit it to the control device, so that the control device controls the first pump starter to turn off the first spray pump; The fourth preset value is smaller than the third preset value.

10. The water mist spray system according to claim 1, characterized in that: Also included: vacuum gauge and / or pressure gauge; The vacuum pressure gauge is installed on the second liquid pipeline before the first spray pump; The pressure gauge is installed on the second liquid pipeline after the first spray pump.

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