Water mist spraying system

Abstract

The utility model relates to a water mist spraying system which comprises an ammonia concentration detector, a control device, a chemical agent solution storage device, a fresh water storage device, a first remote control electromagnetic valve, a second remote control electromagnetic valve, a first pump starter, a first spraying pump and a water mist spraying device. The ammonia gas concentration detector and the water mist spraying device are mounted in the 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; wherein the first liquid pipeline is connected with the second liquid pipeline; the ammonia concentration detector, the first remote control electromagnetic valve, the second remote control electromagnetic valve and the first pump starter are in signal connection with the control device, and the first pump starter is in signal connection with the first spraying pump. 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, in particular to a water mist spraying system. BACKGROUND

[0002] For the ship using ammonia fuel as fuel for diesel engine, there may be a large amount of ammonia leakage in the closed space such as ammonia fuel preparation room due to accidental accidents. Since ammonia is a toxic substance, when the ammonia concentration in the air reaches a certain level, it is easy to cause poisoning of personnel, even fire and explosion risks. How to quickly adsorb and eliminate the leaked ammonia in the closed space of the ship is a problem to be solved. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems of the prior art, in order to achieve the purpose of quickly adsorbing and eliminating the leaked ammonia in the closed space of the ship, the present application provides a water mist spraying system, comprising: an ammonia concentration detector, a control device, a chemical agent solution storage device, a fresh water storage device, a first remote control electromagnetic valve, a second remote control electromagnetic valve, a first pump starter, a first spraying pump and a water mist spraying device.

[0004] The ammonia concentration detector and the water mist spraying device are installed in the ammonia leakage space.

[0005] The chemical agent solution storage device and the first remote control electromagnetic valve are sequentially installed on the first liquid pipeline.

[0006] The fresh water storage device, the second remote control electromagnetic valve, the first spraying pump and the water mist spraying device are sequentially installed on the second liquid pipeline; wherein the first liquid pipeline is connected with the second liquid pipeline, and the connection point of the first liquid pipeline and the second liquid pipeline is between the second remote control electromagnetic valve and the first spraying pump.

[0007] The ammonia concentration detector, the first remote control electromagnetic valve, the second remote control electromagnetic valve and the first pump starter are signal connected with the control device, and the first pump starter is signal connected with the first spraying pump.

[0008] As a possible implementation, it further comprises a third remote control electromagnetic valve installed on the second liquid pipeline before the water mist spraying device and signal connected with the control device.

[0009] As a possible implementation, it further comprises a first stop check valve and a second stop check valve.

[0010] The first stop check valve is installed on the first liquid pipeline between the chemical agent solution storage device and the first remote control electromagnetic valve.

[0011] The second stop check valve is installed on the second liquid pipeline between the fresh water storage device and the second remote control electromagnetic valve.

[0012] The first stop check valve and the second stop check valve are both set to be normally open.

[0013] As a possible implementation, it further comprises a first stop valve and a first check valve.

[0014] The first stop valve and the first check valve are installed on the second liquid pipeline between the first spray pump and the water spray device in sequence.

[0015] The first stop valve and the first check valve are both set to be normally open.

[0016] As a possible implementation, it further comprises a standby pump conversion pressure switch, a second pump starter, a second spray pump, a second stop valve and a second check valve.

[0017] The second spray pump, the second stop valve and the second check valve are installed on a third liquid pipeline in sequence, the third liquid pipeline is connected with the second liquid pipeline, the first connection point of the third liquid pipeline with the second liquid pipeline is before the first spray pump, the second connection point of the third liquid pipeline with the second liquid pipeline is after the first check valve; the second stop valve and the second check valve are both set to be normally open.

[0018] The standby pump conversion pressure switch is installed on the second liquid pipeline after the first spray pump, the standby pump conversion pressure switch, the second pump starter are signal connected with the control device, and the second pump starter is signal connected with the second spray pump.

[0019] As a possible implementation, it further comprises a filter installed on the second liquid pipeline between the check valve and the water spray device.

[0020] As a possible implementation, it further comprises a first drain valve and / or a second drain valve.

[0021] The first drain valve is installed on the second liquid pipeline after the second remote control electromagnetic valve.

[0022] The second drain valve is installed on the second liquid pipeline after the filter.

[0023] The first drain valve and / or the second drain valve are installed at the lowest point of the second liquid pipeline.

[0024] As a possible implementation, it further comprises a first liquid level switch and / or a second liquid level switch installed in the chemical solution storage device.

[0025] The first liquid level switch, the second liquid level switch and the control device are in signal connection.

[0026] As a possible implementation, further comprising: a third liquid level switch and / or a fourth liquid level switch, installed in the fresh water storage device;

[0027] The third liquid level switch, the fourth liquid level switch and the control device are in signal connection.

[0028] As a possible implementation, further comprising: a vacuum pressure gauge and / or a pressure gauge;

[0029] The vacuum pressure gauge is installed on the second liquid pipeline before the first spray pump;

[0030] The pressure gauge is installed on the second liquid pipeline after the first spray pump. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A structural schematic diagram of a water mist spray system provided by the embodiment of the present application;

[0032] Wherein:

[0033] 1-chemical agent cabinet storage cabinet

[0034] 2-fresh water tank

[0035] 3-NO.1 water spray pump

[0036] 4-NO.2 water spray pump

[0037] 5-chemical agent stop check valve

[0038] 6-fresh water stop check valve

[0039] 7-first remote control electromagnetic valve

[0040] 8-second remote control electromagnetic valve

[0041] 9-first manual stop valve

[0042] 10-first check valve

[0043] 11-second manual stop valve

[0044] 12-second check valve

[0045] 13-Y type filter

[0046] 14-third remote control electromagnetic valve

[0047] 15-water mist spray nozzle group

[0048] 16-chemical agent cabinet suction port

[0049] 17 - fresh water tank suction

[0050] 18 - chemical tank low level switch

[0051] 19 - chemical tank low-low level switch

[0052] 20 - fresh water tank low level switch

[0053] 21 - fresh water tank low-low level switch

[0054] 22 - vacuum pressure gauge

[0055] 23 - pressure gauge

[0056] 24 - standby pump changeover pressure switch

[0057] 25 - first relief valve

[0058] 26 - second relief valve

[0059] 27 - test valve

[0060] 28 - ammonia concentration probe

[0061] It should be understood that in the above structural diagram, the size and shape of each block are only for reference, and should not constitute exclusive interpretation of the embodiments of the present application. The relative position and inclusion relationship between the blocks presented by the structural diagram are only used to represent the structural association between the blocks, and are not limited to the physical connection mode of the embodiments of the present application. DETAILED DESCRIPTION

[0062] The technical solutions provided by the present application will be further described below in combination with the drawings and examples. It should be understood that the system structure and business scenarios provided in the embodiments of the present application are mainly used to illustrate possible implementation modes of the technical solutions of the present application, and should not be interpreted as the only limitation of the technical solutions of the present application. Those skilled in the art can know that the technical solutions provided by the present application are also applicable to similar technical problems with the evolution of system structure and the emergence of new business scenarios.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. If there is any inconsistency, the meaning described in the specification or derived from the content described in the 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.

[0064]

Embodiment of water mist sprinkler system

[0065] The ammonia gas is easily soluble in water, and the ammonia fuel preparation room can be simply sprayed with fresh water to dissolve the leaked ammonia gas in water to form ammonia water. However, the absorption effect of fresh water on ammonia is limited. The absorption of fresh water on ammonia can only be carried out until the component partial pressure of ammonia gas is slightly higher than the equilibrium partial pressure of ammonia gas in the solution. The absorption process is relatively long, and the effect cannot be completely guaranteed. At the same time, the fresh water tank capacity on the ship is limited, which also limits the absorption time. In order to greatly reduce the amount of fresh water used, shorten the water spraying time, and improve the ammonia absorption effect, the application adopts a combination of two methods: one is to atomize the water, and a fine water mist nozzle is arranged in the room to atomize the fresh water into fine water mist, increase the contact area of gas and liquid, and thus increase the dissolution speed of ammonia gas; the second is that, according to the characteristics that ammonia can react with acidic substances and is easily soluble in water, an acidic chemical additive is added to the fresh water, and the concentration of ammonia in the liquid is reduced by chemical reaction, thereby improving the absorption efficiency of ammonia. The application uses the fine water mist containing acidic chemical additives to decontaminate ammonia gas in the ship system, which can greatly improve the decontamination efficiency and overcome the shortcomings of incomplete fresh water decontamination of ammonia gas. At the same time, the absorbed water falls to the ground to form ammonia-containing bilge water, and the addition of acidic additives can also neutralize the ammonia content in the ammonia-containing bilge water on the ship, reduce the ammonia water concentration in the ammonia-containing bilge water tank, and further achieve the purpose of rapidly reducing the ammonia gas concentration in the room to a safe range, reducing the safety risk of the operator, and ensuring the safety of the ship and personnel.

[0066] Based on this, the application provides a water mist spraying system, which comprises an ammonia gas concentration detector, a control device, a chemical agent solution storage device, a fresh water storage device, a first remote control electromagnetic valve, a second remote control electromagnetic valve, a first pump starter, a first spraying pump and a water mist spraying device.

[0067] The ammonia gas concentration detector and the water mist spraying device are installed in the ammonia gas leakage space.

[0068] The chemical agent solution storage device and the first remote control electromagnetic valve are sequentially installed on a first liquid pipeline.

[0069] The fresh water storage device, the second remote control electromagnetic valve, the first spraying pump and the water mist spraying device are sequentially installed on a second liquid pipeline; wherein the first liquid pipeline is connected with the second liquid pipeline, and the connection point of the first liquid pipeline and the second liquid pipeline is between the second remote control electromagnetic valve and the first spraying pump.

[0070] The ammonia gas concentration detector, the first remote control electromagnetic valve, the second remote control electromagnetic valve and the first pump starter are signal connected with the control device, and the first pump starter is signal connected with the first spraying pump.

[0071] Among them, as Figure 1As shown, the ammonia concentration detector 28 is installed in the ammonia leakage space, i.e., an enclosed space such as an ammonia fuel preparation room. The ammonia concentration detector 28 can issue an audible and visual alarm when it detects that the leaked ammonia concentration exceeds a preset safety threshold. The ammonia concentration detector 28 is connected to a control device via a signal connection and can send an alarm signal to the control device. This alarm signal may be a switching signal (e.g., changing from a low level to a high level) used to indicate that the ammonia concentration has exceeded the safe range.

[0072] Among them, such as Figure 1 As shown, the control device and the first pump starter (i.e., pump starter No. 1) are located in Figure 1 The water mist control box is located within the system. The control device can be considered the water mist control box. The control device receives an alarm signal from the ammonia concentration detector 28, and then, based on this alarm signal, controls the first pump starter to automatically start the first spray pump. The pump draws chemical solution from the chemical solution storage device and sequentially delivers it to the water mist spraying device through the first and second liquid pipelines for spraying. When the ammonia concentration is lower than the preset safety threshold after spraying, the second remote control solenoid valve opens, and the first remote control solenoid valve closes, drawing fresh water from the fresh water storage device and delivering it to the water mist spraying device through the second liquid pipeline for spraying. These operations can be implemented using existing programs and are not limited thereto. This application aims to protect the components of the water mist spraying system and the connections between these components.

[0073] Among them, the chemical reagent solution storage device is Figure 1 The chemical reagent storage cabinet 29 contains weakly acidic chemicals that can react with ammonia to reduce the concentration of ammonia in the liquid, thereby improving the ammonia absorption efficiency. For example... Figure 1 As shown, the chemical storage cabinet 29 has a chemical suction port 16, through which weakly acidic chemicals can be drawn into the first liquid pipeline where the chemical solution storage device is located. Various types and concentrations of chemicals can be selected, and additives with different physical properties, pH values, and concentrations can be chosen according to the actual usage conditions at the ammonia leak site.

[0074] In some embodiments, it further includes: a first liquid level switch and / or a second liquid level switch, installed in the chemical reagent solution storage device;

[0075] The first liquid level switch and the second liquid level switch are signal connected to the control device.

[0076] Among them, such as Figure 1 As shown, the first liquid level switch is... Figure 1The low-level switch 18 in the chemical reagent cabinet continuously monitors the liquid level of the chemicals in the chemical reagent storage cabinet 29, ensuring it remains within a safe operating range. Once the liquid level in the chemical reagent storage cabinet 29 falls below a set value (first preset value), a low-level alarm is immediately issued, notifying the operator to replenish the chemicals promptly. The current chemical solution level can also be converted into an electrical signal and transmitted to the control device, which records this information (these operations can be implemented using existing programs and are not limited thereto).

[0077] like Figure 1 As shown, the second liquid level switch is... Figure 1 The chemical reagent cabinet has a low-low level switch 19, which continuously monitors the chemical level in the chemical reagent storage cabinet 29 to ensure it remains within a safe operating range. Once the chemical level in the storage cabinet 29 falls below a set value (a second preset value is less than a first preset value), a low-low level alarm is triggered. Simultaneously, this alarm is converted into an electrical signal and transmitted to the control device, which automatically switches to a freshwater spray system (these operations can be implemented using existing procedures and are not limited thereto). This alarm can also further notify the operator to replenish the chemicals as soon as possible.

[0078] Among them, freshwater storage devices are Figure 1 Freshwater tank 2 in the middle stores freshwater. Taking advantage of the high solubility of ammonia in water, it is used for freshwater spraying in the ammonia fuel preparation room, causing leaked ammonia to dissolve in the water and form ammonia water. For example... Figure 1 As shown, the freshwater tank 2 has a freshwater tank suction port 17, from which freshwater can be drawn into the second liquid pipeline where the freshwater storage device is located.

[0079] In some embodiments, it further includes: a third level switch and / or a fourth level switch, installed in the freshwater storage device;

[0080] The third liquid level switch and the fourth liquid level switch are signal connected to the control device.

[0081] Among them, such as Figure 1 As shown, the third liquid level switch is... Figure 1 The freshwater tank low-level switch 20 can issue a low-level alarm when the freshwater capacity is lower than a set value (i.e., the third preset value). This alarm can notify the operator to replenish the freshwater in time. The current freshwater level can be converted into an electrical signal and transmitted to the control device, which records the information (these operations can be performed by existing programs and are not limited thereto).

[0082] likeFigure 1 As shown, the fourth liquid level switch is... Figure 1 The freshwater tank low-low level switch 21 can issue a low-low level alarm when the freshwater capacity is lower than a set value (i.e., the fourth preset value is less than the third preset value). Upon triggering the low-low level alarm, it converts the current freshwater level status into an electrical signal and transmits it to the control device (i.e., the water mist main control box), controlling the first pump starter to automatically stop the first spray pump (these operations can be implemented by existing programs and are not limited thereto). The water level height at the low-low level alarm should meet the minimum required water level capacity for water mist fire suppression in the event of a fire in the engine room.

[0083] In some embodiments, it further includes: a first shut-off check valve and a second shut-off check valve;

[0084] The first shut-off check valve is installed on the first liquid pipeline between the chemical reagent solution storage device and the first remote control solenoid valve;

[0085] The second shut-off check valve is installed on the second liquid pipeline between the freshwater storage device and the second remote control solenoid valve;

[0086] Both the first and second shut-off check valves are set to the normally open state.

[0087] Among them, such as Figure 1 As shown, the installed first shut-off check valve (i.e., chemical agent shut-off check valve) 5 and second shut-off check valve (i.e., fresh water shut-off check valve) 6 have the functions of shut-off valve and check valve. They can manually control the opening and closing of the fluid, and automatically close to prevent backflow when the fluid flows in the opposite direction.

[0088] In some embodiments, it further includes: a third remote-controlled solenoid valve, installed on a second liquid pipeline before the water mist spraying device, and signal-connected to the control device.

[0089] Alternatively, a third remote-controlled solenoid valve 14 can be installed on the second liquid pipeline near the water mist spraying device. Initially, when the first remote-controlled solenoid valve 7 and the third remote-controlled solenoid valve 14 are simultaneously opened, the second remote-controlled solenoid valve 8 is closed. When the ammonia concentration falls below a preset safety threshold after chemical spraying, the second remote-controlled solenoid valve 8 will be opened, and the first remote-controlled solenoid valve 7 will be closed. At this time, the third remote-controlled solenoid valve 14 remains open, allowing fresh water to flow to the water mist spraying device. Using the third remote-controlled solenoid valve 14 provides redundant protection, i.e., an additional safety layer, ensuring effective control even if the first remote-controlled solenoid valve 7 and / or the second remote-controlled solenoid valve 8 fails (these operations can be implemented by existing programs and are not limited thereto).

[0090] Among them, such as Figure 1As shown, the first pump starter, namely pump 1, and the first spray pump, namely NO.1 water spray pump 3, will automatically start the NO.1 water spray pump 3 after the control device receives the alarm signal sent by the ammonia concentration detector 28. This will generate suction to draw weakly acidic chemical agents from the chemical agent cabinet suction port 16 into the first liquid pipeline and fresh water from the fresh water tank suction port 17 into the second liquid pipeline.

[0091] In some embodiments, it further includes: a vacuum pressure gauge and / or a pressure gauge;

[0092] The vacuum pressure gauge is installed on the second liquid pipeline before the first spray pump;

[0093] The pressure gauge is installed on the second liquid pipeline after the first spray pump.

[0094] After turning on water spray pump 3 (NO.1) and drawing in a weakly acidic chemical agent or fresh water, it is necessary to check the pressure in the second liquid pipeline. Specifically, for example... Figure 1 As shown, a vacuum gauge 22 (PV) can be installed on the second liquid line 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 gauge 22 is used to measure the negative pressure (i.e., pressure below 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 level is within the expected range, it indicates that the NO.1 water spray pump 3 can effectively draw liquid from the water source. If the vacuum level is too low, it may mean that there is a leak at the inlet of the NO.1 water spray pump 3, the filter is blocked, or air has entered the second liquid line, affecting the suction performance of the NO.1 water spray pump 3. If the vacuum level is too high, it may lead to cavitation, that is, gas in the liquid precipitates to form bubbles, which can damage the impeller of the NO.1 water spray pump 3 and may result in insufficient flow.

[0095] like Figure 1As shown, a pressure gauge 23 (PI) can also be installed on the second liquid pipeline after the NO. 1 water spray pump 3, and can also 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 stabilizes within a reasonable range, it indicates that the NO. 1 water spray pump 3 is delivering liquid at the design parameters. When the pressure at the outlet of the NO. 1 water spray pump 3 is too low, it may be due to failure of the NO. 1 water spray pump 3, pipe blockage, valve not fully open, or insufficient speed of the NO. 1 water spray pump 3, etc., affecting 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 pipe resistance increases (such as nozzle blockage), the valve is not properly closed, or other factors that hinder the flow of liquid, or it may be because the NO. 1 water spray pump 3 output exceeds the demand, increasing unnecessary load.

[0096] In some embodiments, further comprising: a first stop valve and a first check valve;

[0097] The first stop valve and the first check valve are installed in sequence on the second liquid pipeline between the first spray pump and the water mist spray device;

[0098] The first stop valve and the first check valve are both set to an open state.

[0099] Wherein, as shown in Figure 1 , a first stop valve (i.e. a first manual stop valve in Figure 1 ) 9 and a first check valve 10 are also installed after the NO. 1 water spray pump 3. The stop valve is mainly used in fluid pipeline systems to control the opening, closing or flow adjustment of the fluid by manual operation. The main function of the check valve is to prevent backflow of the medium. It is an automatic valve that opens or closes by relying on the pressure change of the medium itself, without the need for an external power source. The first stop valve (i.e. the first manual stop valve in Figure 1 ) 9 and the first check valve 10 are post-pump valves that prevent backflow of liquid in the pipeline and facilitate equipment maintenance. To ensure that the spray system starts automatically quickly, they are both set to an open state.

[0100] Wherein, as shown in Figure 1 , the water mist spray device, i.e. the water mist spray nozzle group 15, includes multiple spray heads installed in the fuel preparation room. The water mist spray nozzle group usually has very fine pore sizes to produce fine water mist particles, thereby effectively covering and decontaminating ammonia gas.

[0101] In some embodiments, further comprising: a filter installed on the second liquid pipeline between the check valve and the water mist spray device.

[0102] Among them, such as Figure 1 As shown, the filter is Figure 1 The Y-type filter 13 is used in this system. Because water mist spray nozzle assemblies typically have very fine pores, larger particles or impurities in the solution can cause nozzle clogging, affecting the spraying effect or even causing complete failure. Filtering out any solid particles through the Y-type filter 13 reduces wear on the nozzles and other components (such as pipes and pumps), thereby extending the overall system lifespan. Of course, other types of filters can also be used.

[0103] In some embodiments, it further includes: a first relief valve and / or a second relief valve;

[0104] The first relief valve is installed on the second liquid pipeline after the second remote control solenoid valve;

[0105] The second vent valve is installed on the second liquid line after the filter;

[0106] The first and / or second vent valves are installed at the lowest point of the second liquid line.

[0107] Among them, such as Figure 1 As shown, a first drain valve 25 and / or a second drain valve 26 are also installed at the lowest point of the second liquid pipeline to drain residual liquid in the pipeline. The second drain valve 26 is located after the Y-type filter 13, so the discharged fluid has already been filtered by the Y-type filter 13, reducing the possibility of impurity discharge and making it more environmentally friendly and safer.

[0108] In some embodiments, the system further includes a test valve installed between the second relief valve and the second liquid line.

[0109] Among them, such as Figure 1 As shown, test valve 27 is a valve used for system testing to ensure the safety and reliability of the system, while also facilitating maintenance and testing.

[0110] In some embodiments, it further includes: a standby pump switching pressure switch, a second pump starter, a second spray pump, a second shut-off valve, and a second check valve;

[0111] The second spray pump, the second shut-off 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. Both the second shut-off valve and the second check valve are set to the normally open state.

[0112] The standby pump switching pressure switch is installed on the second liquid pipeline after the first spray pump, and the standby pump switching pressure switch, the second pump starter and the control device are signal connected, and the second pump starter and the second spray pump are signal connected.

[0113] As shown in Figure 1 , a standby pump, i.e. the second pump starter (No. 2 pump starter) 4 and the second spray pump (i.e. NO. 2 water spray pump) 4, can be provided. At the same time, a standby pump switching pressure switch 24 (PS) is provided. When the NO. 1 water spray pump 3 fails, the system pressure will decrease, and the standby pump switching pressure switch 24 detects that the pressure decreases below the set value, triggers a signal and sends it to the control device (i.e. the water mist main control box), and 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 a role in switching the standby pump.

[0114] Similarly, as shown in Figure 1 , the second (manual) stop valve 11 and the second check valve 12 also need to be installed on the standby third liquid pipeline. The second (manual) stop valve 11 and the second check valve 12 are post-pump valves, which prevent backflow of liquid in the pipeline and facilitate equipment maintenance. To ensure that the spray system starts quickly and automatically, they are set to the normally open state.

[0115] The specific working process of the water mist spray system of the present application is as follows:

[0116] When the ammonia concentration probe 28 detects that the ammonia concentration in the fuel preparation room exceeds the preset safety threshold, it will sound and light alarms and transmit an alarm signal to the water mist main control box (i.e. the control device), which automatically opens the first remote control electromagnetic valve 7 and the third remote control electromagnetic valve 14, and closes the second remote control electromagnetic valve 8; the No. 1 pump starter is used to automatically start the NO. 1 water spray pump 3, which sucks the solution containing weak acid additives from the chemical agent cabinet suction port 16 through the normally open chemical agent stop check valve 5 into the pipeline, and then filters the impurities in the solution containing weak acid additives through the Y-type filter 13, and delivers it to the water mist spray nozzle group 15 arranged in the fuel preparation room, to release the water mist to the entire fuel preparation room to quickly decontaminate the ammonia. After the ammonia concentration probe 28 detects that the ammonia concentration decreases to the preset safety threshold, it will send a signal to the water mist main control box (i.e. the control device), which will remotely open the second remote control electromagnetic valve 8 and close the first remote control electromagnetic valve 7, and the fresh water in the fresh water tank 2 is sucked from the fresh water tank suction port 17 through the normally open fresh water stop check valve 6 into the pipeline as an adsorption solution, and delivered to the water mist spray nozzle group 15 arranged in the fuel preparation room, to continue to spray fresh water in the room.

[0117] From the above, the application adopts double mode safety guarantee: chemical reaction plus physical absorption double spraying adsorption form, that is, first use chemical agent to spray ammonia, and when the ammonia concentration is rapidly and substantially reduced below the preset safety threshold, switch to fresh water to continue to spray ammonia with fresh water, to ensure the absorption effect of ammonia-containing mixed gas or gas-liquid mixture. In this way, the leaked ammonia in the enclosed space of the ship can be quickly adsorbed and eliminated, and the safety of personnel and ship operation is ensured. At the same time, full working condition automatic control spraying is adopted, which can automatically and comprehensively control according to the ammonia concentration, tank liquid level and other information, to ensure that the ammonia concentration in the room is lower than the control value, and effectively reduce the water consumption and the amount of ammonia-containing bilge water, and reduce the space requirement of the ammonia bilge water tank on the ship.

[0118] Note that the term "comprising" as used in the specification and in claims includes the meaning that should be attributed to terms such as "comprises", "comprised of" and "comprising" and not the meaning that should be attributed to the term "consisting of".

[0119] The phrase "one embodiment" or "an embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, but can refer to different embodiments. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0120] Note that the above are only the preferred embodiments of the application and the principles of technology applied. Those skilled in the art will understand that the application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the application. Therefore, although the application has been described in detail through the above embodiments, the application is not limited to the above embodiments, and more other equivalent embodiments can be included without departing from the concept of the application, all of which belong to the protection scope of the application.

Claims

1. A water mist sprinkler system characterized in that, The application relates to an ammonia concentration detector, a control device, a chemical agent solution storage device, a fresh water storage device, a first remote control electromagnetic valve, a second remote control electromagnetic valve, a first pump starter, a first spray pump and a water mist spraying device. The ammonia concentration detector and the water mist spraying device are installed in an ammonia leakage space. The chemical agent solution storage device and the first remote control electromagnetic valve are sequentially installed on a first liquid pipeline. The fresh water storage device, the second remote control electromagnetic valve, the first spray pump and the water mist spraying device are sequentially installed on a second liquid pipeline. The first liquid pipeline is connected with the second liquid pipeline, and a connection point of the first liquid pipeline and the second liquid pipeline is between the second remote control electromagnetic valve and the first spray pump. The ammonia concentration detector, the first remote control electromagnetic valve, the second remote control electromagnetic valve, the first pump starter and the control device are signal connected.

2. The water mist sprinkler system of claim 1, wherein, The application further comprises a third remote control electromagnetic valve which is installed on the second liquid pipeline before the water mist spraying device and is signal connected with the control device. The application further comprises a first stop check valve and a second stop check valve.

3. The water mist sprinkler system of claim 1, wherein, The first stop check valve is installed on the first liquid pipeline between the chemical agent solution storage device and the first remote control electromagnetic valve. The second stop check valve is installed on the second liquid pipeline between the fresh water storage device and the second remote control electromagnetic valve. The first stop check valve and the second stop check valve are both set as a normally open state. The application further comprises 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 spraying device.

4. The water mist sprinkler system of claim 1, wherein, The first stop valve and the first check valve are both set as a normally open state. The application further comprises a standby pump conversion pressure switch, a second pump starter, a second spray pump, a second stop valve and a second check valve. The second spray pump, the second stop valve and the second check valve are sequentially installed on a third liquid pipeline, the third liquid pipeline is connected with the second liquid pipeline, a first connection point of the third liquid pipeline and the second liquid pipeline is before the first spray pump, and a second connection point of 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 as a normally open state. The standby pump conversion pressure switch is installed on the second liquid pipeline after the first spray pump, the standby pump conversion pressure switch and the second pump starter are signal connected with the control device, and the second pump starter is signal connected with the second spray pump.

5. The water mist sprinkler system of claim 4, wherein, The application further comprises a filter which is installed on the second liquid pipeline between the check valve and the water mist spraying device. The application further comprises a first drain valve and / or a second drain valve. The first drain valve is installed on the second liquid pipeline after the second remote control electromagnetic valve. The second drain valve is installed on the second liquid pipeline after the filter.

6. The water mist sprinkler system of claim 4, wherein, The first drain valve and / or the second drain valve are installed at the lowest point of the second liquid pipeline. The application further comprises a first liquid level switch and / or a second liquid level switch which are installed in the chemical agent solution storage device.

7. The water mist sprinkler system of claim 6, wherein, ​ ​ ​ ​ ​ 8. The water mist sprinkler system of claim 1, wherein, ​ ​ The first liquid level switch, the second liquid level switch and the control device are in signal connection.

9. The water mist sprinkler system of claim 1, wherein, Further comprising: A third liquid level switch and / or a fourth liquid level switch are installed in the fresh water storage device; The third liquid level switch, the fourth liquid level switch and the control device are in signal connection.

10. The water mist sprinkler system of claim 1, wherein, Further comprising: a vacuum pressure gauge and / or a 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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