CN115628854A - Marine ammonia leakage detection system - Google Patents
Marine ammonia leakage detection system Download PDFInfo
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- CN115628854A CN115628854A CN202211092300.8A CN202211092300A CN115628854A CN 115628854 A CN115628854 A CN 115628854A CN 202211092300 A CN202211092300 A CN 202211092300A CN 115628854 A CN115628854 A CN 115628854A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
Abstract
The invention discloses a marine ammonia gas leakage detection system, which is characterized in that an ammonia gas detector is used for carrying out real-time ammonia gas concentration detection on an ammonia gas to-be-detected area to obtain a current ammonia gas concentration value, and the current ammonia gas concentration value is sent to an ammonia gas leakage main control module; the ammonia leakage main control module receives a current ammonia concentration value sent by the ammonia detector and inputs the current ammonia concentration value into an alarm grade selection mechanism so that the alarm grade selection mechanism outputs a corresponding alarm grade control strategy; and controlling the power supply module, the cut-off module, the refrigeration module, the pipeline electromagnetic valve, the water curtain module, the sound and light alarm module, the three-level alarm module and the ventilation module according to an alarm grade control strategy. Compared with the prior art, the invention relates a plurality of modules such as the refrigeration module, the ventilation module, the water curtain module, the sound-light alarm module, the three-level alarm module, the power module and the like, realizes high-efficiency linkage, realizes effective detection on the ammonia gas leakage condition in real time, and improves the safety.
Description
Technical Field
The invention relates to the technical field of ship refrigeration application, in particular to a marine ammonia gas leakage detection system.
Background
Because of the wide development and application of the existing engineering ships, more and more comprehensive engineering ships integrating catching, processing and storing are adopted, more and more refrigeration and cold storage equipment applied to the processing and storing processes are also applied, because ammonia has the refrigeration advantages of moderate working pressure and high heat exchange efficiency as a refrigerant, the ammonia is superior to other refrigeration media in economic and environmental protection performances, the ammonia is commonly used as the refrigeration medium in a refrigeration system for ships, but because ammonia has the characteristics of toxicity, flammability, explosiveness, corrosiveness and the like to human bodies, how to ensure the safe application of the refrigeration equipment taking ammonia as the refrigerant is needed, and a safe and reliable ammonia leakage monitoring and security control system is needed to carry out real-time monitoring and protection on the ammonia refrigeration environment.
The existing refrigerating system lacks multi-stage monitoring and alarming in the aspect of refrigerant leakage, cannot thoroughly and effectively control the condition of refrigerant leakage, and has certain potential safety hazard.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the marine ammonia gas leakage detection system is provided, the ammonia gas leakage condition can be effectively detected in real time, and the safety is improved.
In order to solve the above technical problem, the present invention provides a marine ammonia gas leakage detection system, including: the ammonia leakage monitoring device comprises an ammonia leakage main control module, a power supply module, an ammonia detector, a cutting module, a refrigeration module, a pipeline electromagnetic valve, a water curtain module, an audible and visual alarm module, a three-level alarm module and a ventilation module;
the ammonia gas detector is used for detecting the ammonia gas concentration in real time in an ammonia gas area to be detected to obtain a current ammonia gas concentration value, and sending the current ammonia gas concentration value to the ammonia gas leakage main control module;
the ammonia leakage main control module is used for receiving the current ammonia concentration value sent by the ammonia detector and inputting the current ammonia concentration value into an alarm grade selection mechanism so as to enable the alarm grade selection mechanism to output a corresponding alarm grade control strategy;
the ammonia leakage main control module is used for controlling the power supply module, the cut-off module, the refrigeration module, the pipeline electromagnetic valve, the water curtain module, the sound-light alarm module, the three-level alarm module and the ventilation module according to the alarm level control strategy.
In a possible implementation manner, the ammonia leakage main control module is configured to input the current ammonia concentration value into an alarm level selection mechanism, so that the alarm level selection mechanism outputs a corresponding alarm level control policy, and specifically includes:
setting a first preset ammonia concentration threshold value, a second preset ammonia concentration threshold value and a third preset ammonia concentration threshold value;
inputting the current ammonia concentration value into an alarm level selection mechanism so that the alarm level selection mechanism judges whether the current ammonia concentration value exceeds the third preset ammonia concentration threshold value, and if so, outputting a three-level alarm control strategy;
if the current ammonia concentration value does not exceed the third preset ammonia concentration threshold value, judging whether the current ammonia concentration value exceeds the second preset ammonia concentration threshold value, and if so, outputting a secondary alarm control strategy;
and if the current ammonia concentration value does not exceed the second preset ammonia concentration threshold value, judging whether the current ammonia concentration value exceeds the first preset ammonia concentration threshold value, and if so, outputting a primary alarm control strategy.
In a possible implementation manner, the ammonia leakage main control module is configured to control the power module, the cut-off module, the refrigeration module, the pipeline electromagnetic valve, the water curtain module, the sound-light alarm module, the three-level alarm module, and the ventilation module according to the alarm level control strategy, and specifically includes:
when the primary alarm control strategy is output, the ammonia leakage main control module is used for controlling the tertiary alarm module to start a primary alarm instruction, controlling the acousto-optic alarm module to send acousto-optic early warning, and simultaneously controlling the cutting module to cut off the pipeline electromagnetic valve;
when the secondary alarm control strategy is output, the ammonia leakage main control module is used for controlling the tertiary alarm module to start a secondary alarm instruction, controlling the refrigeration and refrigeration to stop running and controlling the cutting module to cut off the pipeline electromagnetic valve;
when the tertiary alarm control strategy is output, the ammonia leakage main control module is used for controlling the tertiary alarm module to start a tertiary alarm instruction, controlling the cut-off module to cut off the power module and the refrigeration module, and simultaneously starting the water curtain module and the ventilation module.
In a possible implementation mode, a plurality of ammonia gas detectors are arranged on an ammonia gas transmission pipeline according to a preset sequence, when ammonia gas leakage is detected, an ammonia gas concentration value detected by each ammonia gas detector is obtained, the ammonia gas concentration values detected by each ammonia gas detector are compared, a first ammonia gas detector corresponding to the maximum ammonia gas concentration value is obtained, and the position of an ammonia gas transmission pipeline where the first ammonia gas detector is located is set as an ammonia gas leakage point.
In a possible implementation manner, the ammonia leakage main control module is respectively connected with the power supply module, the cut-off module, the ammonia detector, the refrigeration module, the pipeline electromagnetic valve, the water curtain module, the sound-light alarm module, the three-level alarm module and the ventilation module.
In one possible implementation, the ammonia gas leakage main control module comprises a display, an alarm display, a reset button and an emergency stop button;
the display is used for setting the initial states of the sound-light alarm module and the ammonia gas detector, and setting and displaying the first preset ammonia gas concentration threshold, the second preset ammonia gas concentration threshold and the third preset ammonia gas concentration threshold;
the alarm display is used for displaying an alarm indication of the three-level alarm module;
the reset button resets the alarm indication state of the three-level alarm module;
and the emergency stop button carries out emergency cut-off on the pipeline electromagnetic valve.
In one possible implementation, the line solenoid valve includes a liquid line solenoid valve, a hot gas line solenoid valve, and a suction line solenoid valve;
the liquid pipeline electromagnetic valve is used for controlling the delivery of the supercooled liquid refrigerant to a refrigeration area;
the suction pipeline electromagnetic valve is used for controlling the refrigerant after refrigeration heat exchange to flow back to the refrigeration area;
and the hot gas pipeline electromagnetic valve is used for controlling the steam compressed by the compressor to be conveyed to a refrigeration area so as to defrost the refrigeration equipment with hot ammonia.
In a possible implementation manner, the power module and the ammonia gas leakage main control module are arranged outside an ammonia gas detection area, and the power module is used for supplying power to the ammonia gas leakage main control module.
In a possible implementation manner, the sound-light alarm module is configured in the ammonia gas to-be-detected area and is used for receiving a sound-light alarm control signal sent by the ammonia gas leakage main control module, so that the sound-light alarm module provides early warning reminding for the ammonia gas to-be-detected area in the form of audio-visual signals.
In one possible implementation manner, the cutoff module includes a manual button cutoff signal and a power module cutoff signal, the manual button cutoff signal is used for manually cutting off the pipeline electromagnetic valve, and the power module cutoff signal is used for automatically cutting off the power supply of the power module to the refrigeration module.
In a possible implementation manner, the ventilation module is configured to receive a ventilation signal output by the ammonia gas leakage main control module, and perform ammonia gas emission on the ammonia gas to-be-detected area after receiving the ventilation signal.
In a possible implementation manner, the water curtain module is used for receiving a water curtain signal output by the ammonia leakage main control module, and receiving the water curtain signal, and then carrying out chemical combination reaction on ammonia in the area to be detected of the ammonia to dilute so as to convert the ammonia into ammonia hydrate.
Compared with the prior art, the marine ammonia gas leakage detection system provided by the embodiment of the invention has the following beneficial effects:
carrying out real-time ammonia concentration detection on an ammonia gas to-be-detected area through the ammonia gas detector to obtain a current ammonia gas concentration value, and sending the current ammonia gas concentration value to the ammonia gas leakage main control module; the ammonia leakage main control module receives the current ammonia concentration value sent by the ammonia detector and inputs the current ammonia concentration value into an alarm grade selection mechanism so as to enable the alarm grade selection mechanism to output a corresponding alarm grade control strategy; and controlling the power supply module, the cut-off module, the refrigeration module, the pipeline electromagnetic valve, the water curtain module, the sound-light alarm module, the three-level alarm module and the ventilation module according to the alarm grade control strategy. Compared with the prior art, the invention relates a plurality of modules such as the refrigeration module, the ventilation module, the water curtain module, the sound-light alarm module, the three-level alarm module, the power supply module and the like, realizes high-efficiency linkage, realizes effective detection on the ammonia gas leakage condition in real time, and improves the safety.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a marine ammonia gas leakage detection system provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a marine ammonia gas leakage detection system provided by the present invention, and as shown in fig. 1, the system includes an ammonia gas leakage main control module 101, a power supply module 102, an ammonia gas detector 103, a shutoff module 104, a refrigeration module 105, a pipeline electromagnetic valve 106, a water curtain module 107, an audible and visual alarm module 108, a three-level alarm module 109, and a ventilation module 110, specifically as follows:
the ammonia leakage main control module 101 is respectively connected with the power supply module 102, the ammonia detector 103, the cut-off module 104, the refrigeration module 105, the pipeline electromagnetic valve 106, the water curtain module 107, the sound and light alarm module 108, the three-level alarm module 109 and the ventilation module 110.
In an embodiment, the ammonia gas detector 103 is configured to perform real-time ammonia gas concentration detection on an ammonia gas to-be-detected area to obtain a current ammonia gas concentration value, and send the current ammonia gas concentration value to the ammonia gas leakage main control module 101.
Preferably, the ammonia gas to-be-detected area is a refrigeration working area and a refrigeration application area, wherein the refrigeration working area is a refrigeration machine room and is mainly used for refrigerating a refrigerant; the refrigeration application area refers to an area which utilizes a refrigerant to cool, such as a low-temperature warehouse, a low-temperature production workshop and an ammonia preparation room.
In an embodiment, a plurality of ammonia gas detectors 103 are arranged in each ammonia gas area to be detected, the ammonia gas detectors 103 are arranged on an ammonia gas transmission pipeline according to a preset sequence, when ammonia gas leakage is detected, an ammonia gas concentration value detected by each ammonia gas detector 103 is obtained, the ammonia gas concentration values detected by each ammonia gas detector 103 are compared, a first ammonia gas detector corresponding to the maximum ammonia gas concentration value is obtained, and the position of an ammonia gas transmission pipeline where the first ammonia gas detector is located is set as an ammonia gas leakage point. The preset sequence can be that the ammonia gas transmission pipelines are placed at preset intervals.
Preferably, for a plurality of ammonia gas detectors 103 arranged in each ammonia gas area to be detected, a number corresponding to each ammonia gas detector 103 and a specific position of the ammonia gas detector 103 on the ammonia gas transmission pipeline are set, so that the specific position can be obtained based on the number of the ammonia gas detector 103 in the following.
Because when ammonia leakage occurs in the ammonia detection area, the distance the ammonia detector nearest to the ammonia leakage point compares the ammonia in the earlier detection control of other ammonia detectors ability, and its ammonia concentration value that detects also compares other ammonia detectors higher, based on this principle, when ammonia leakage occurs, through at the ammonia leakage initial stage, the ammonia concentration value that all ammonia detectors detected at the same moment of contrast, can acquire the approximate position that the ammonia leaked, for follow-up ammonia leakage processing that carries out provides great help, reduce the investigation time to the ammonia leakage point, improve the treatment effeciency that the ammonia leaked.
In an embodiment, the ammonia leakage main control module 101 is configured to receive the current ammonia concentration value sent by the ammonia detector 103, and input the current ammonia concentration value into an alarm level selection mechanism, so that the alarm level selection mechanism outputs a corresponding alarm level control policy; the ammonia gas leakage main control module 101 is further configured to control the power module 102, the cut-off module 104, the refrigeration module 105, the pipeline electromagnetic valve 106, the water curtain module 107, the sound and light alarm module 108, the third-level alarm module 109, and the ventilation module 110 according to the alarm level control strategy.
In one embodiment, the ammonia leakage main control module 101 further comprises a display, an alarm display, a reset button and an emergency stop button; the display is used for setting initial states of the audible and visual alarm module 108 and the ammonia gas detector 103, and setting and displaying a first preset ammonia gas concentration threshold, a second preset ammonia gas concentration threshold and a third preset ammonia gas concentration threshold; the alarm display is used for displaying an alarm indication of the third-level alarm module 109; the reset button resets the alarm indication state of the third-level alarm module 109; the emergency stop button emergently shuts off the pipeline solenoid valve 106.
Preferably, the set first preset ammonia concentration threshold is 25ppm, the set second preset ammonia concentration threshold is 300ppm, and the set third preset ammonia concentration threshold is 45000ppm.
In an embodiment, the ammonia leakage main control module 101 is configured to input the current ammonia concentration value into an alarm level selection mechanism, so that the alarm level selection mechanism determines whether the current ammonia concentration value exceeds the third preset ammonia concentration threshold, and if so, outputs a three-level alarm control strategy; if the current ammonia concentration value does not exceed the third preset ammonia concentration threshold value, judging whether the current ammonia concentration value exceeds the second preset ammonia concentration threshold value, and if so, outputting a secondary alarm control strategy; and if the current ammonia concentration value does not exceed the second preset ammonia concentration threshold value, judging whether the current ammonia concentration value exceeds the first preset ammonia concentration threshold value, and if so, outputting a primary alarm control strategy.
In one embodiment, when the primary alarm control strategy is output, the ammonia leakage main control module is configured to control the tertiary alarm module 109 to turn on a primary alarm indication, control the sound-light alarm module to emit a sound-light early warning, and control the cut-off module 104 to cut off the pipeline electromagnetic valve 106.
In one embodiment, when the secondary alarm control strategy is output, the ammonia leakage main control module is configured to control the tertiary alarm module 109 to turn on a secondary alarm indication, control the refrigeration stop, and control the cut-off module 104 to cut off the pipeline solenoid valve 106.
In one embodiment, when the three-level alarm control strategy is output, the ammonia leakage main control module is configured to control the three-level alarm module 109 to turn on a three-level alarm indication, and control the cutoff module 104 to cut off the power module 102 and the refrigeration module 105, and turn on the water curtain module 107 and the ventilation module 110.
In one embodiment, the third-level alarm module 109 is an ammonia leakage main control module, and displays and outputs alarm signals for three levels of preset ammonia concentration thresholds, and performs operation or control of corresponding levels through alarm of different levels.
As an example in this embodiment, when the ammonia gas detector 103 outputs ammonia gas with a concentration exceeding 25ppm, a primary alarm early warning is started, the ammonia gas leakage main control module transmits a primary alarm state to the audible and visual alarm module 108 to send out an early warning, and simultaneously transmits the primary alarm state to the ship monitoring system AMS, and the AMS system sends out an early warning to the whole ship to remind a worker to manually press a button to cut off the refrigeration pipeline electromagnetic valve 106 to prevent ammonia gas from expanding.
As an example in this embodiment, when the ammonia gas concentration output by the ammonia gas detector 103 exceeds 300ppm, a secondary alarm is turned on, the ammonia gas leakage main control module transmits the secondary alarm state to the refrigeration module 105, the refrigeration module 105 automatically stops the ammonia refrigeration compressor and the ammonia pump, and meanwhile, the ammonia gas leakage main control module outputs a control signal to automatically close the pipeline electromagnetic valve 106 on the ammonia gas transmission pipeline, so that the ammonia gas is stopped from flowing at the starting speed, and the ammonia gas is prevented from further expanding.
As an example in this embodiment, when the ammonia gas detector 103 outputs a current ammonia gas concentration value of 45000ppm, a three-level alarm is turned on, the ammonia gas leakage main control module outputs a cut-off signal to the power supply module 102, and the power supply module 102 automatically cuts off power supply to the refrigeration module 105 and the equipment related to the refrigeration area, so as to avoid potential safety hazard caused by expansion of charged equipment, and meanwhile, the ventilation module 110 and the water curtain module 107 continue to reduce and absorb the ammonia gas concentration, thereby ensuring safety.
In one embodiment, the line solenoid valve 106 includes a liquid line solenoid valve, a hot gas line solenoid valve, and a suction line solenoid valve; the liquid pipeline electromagnetic valve is used for controlling the supercooled liquid refrigerant to be conveyed to the refrigerating area so as to frost the refrigerating area; the hot gas pipeline electromagnetic valve is used for controlling the high-temperature steam compressed by the compressor to be conveyed to a refrigerating area and carrying out hot ammonia defrosting on the refrigerating equipment; and the suction pipeline electromagnetic valve is used for controlling the refrigerant after refrigeration heat exchange to flow back to the refrigeration area.
In one embodiment, when the ammonia concentration value exceeds the preset ammonia concentration threshold, the ammonia leakage main control module outputs a cut-off signal for cutting off the pipeline electromagnetic valve 106 on the ammonia transmission pipeline, so as to cut off the flow of ammonia in the ammonia transmission pipeline and prevent ammonia leakage.
In an embodiment, the power module 102 and the ammonia gas leakage main control module are disposed outside an ammonia gas detection area, and the power module 102 is configured to provide an uninterruptible power supply UPS configured with a 220V/50Hz power supply to supply power to the ammonia gas leakage main control module.
In one embodiment, the sound-light alarm module 108 is configured in the area where ammonia gas is to be detected, and is configured to receive a sound-light alarm control signal sent by the ammonia gas leakage main control module, so that the sound-light alarm module 108 provides an early warning prompt for the area where ammonia gas is to be detected in the form of an audio-visual signal.
In one embodiment, the shut-off module 104 includes a manual push-button shut-off signal for manually shutting off the line solenoid valve 106 and a power module 102 shut-off signal for automatically shutting off power to the refrigeration module 105 from the power module 102.
In one embodiment, the ventilation module 110 is configured to receive a ventilation signal output by the ammonia gas leakage main control module, and perform ammonia gas emission on the ammonia gas to-be-detected area after receiving the ventilation signal, so as to reduce the ammonia gas concentration.
In an embodiment, the water curtain module 107 is configured to receive a water curtain signal output by the ammonia gas leakage main control module, and perform chemical combination reaction dilution on the ammonia gas in the area to be detected of the ammonia gas after receiving the water curtain signal, so as to convert the ammonia gas into ammonia hydrate, thereby quickly eliminating the ammonia gas in the air.
In one embodiment, based on the arrangement of the ventilation module 110 and the water curtain module 107, ammonia gas leakage control combining volumetric ventilation and chemical reaction is adopted, so that the control process is safe and reliable.
Preferably, the sound and light alarm module 108, the ammonia gas detector 103, the water curtain module 107, the ventilation module 110 and the three-level alarm module 109 are arranged in each ammonia gas area to be detected.
In summary, the invention provides a marine ammonia gas leakage detection system, which performs real-time ammonia gas concentration detection on an ammonia gas to-be-detected area through an ammonia gas detector to obtain a current ammonia gas concentration value, and sends the current ammonia gas concentration value to an ammonia gas leakage main control module; the ammonia leakage main control module receives the current ammonia concentration value sent by the ammonia detector and inputs the current ammonia concentration value into an alarm grade selection mechanism so as to enable the alarm grade selection mechanism to output a corresponding alarm grade control strategy; and controlling the power supply module, the cut-off module, the refrigeration module, the pipeline electromagnetic valve, the water curtain module, the sound-light alarm module, the three-level alarm module and the ventilation module according to the alarm grade control strategy. Compared with the prior art, the invention relates a plurality of modules such as the refrigeration module, the ventilation module, the water curtain module, the sound-light alarm module, the three-level alarm module, the power supply module and the like, realizes high-efficiency linkage, realizes effective detection on the ammonia gas leakage condition in real time, and improves the safety.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (12)
1. A marine ammonia leak detection system, comprising: the ammonia leakage monitoring device comprises an ammonia leakage main control module, a power supply module, an ammonia detector, a cutting module, a refrigeration module, a pipeline electromagnetic valve, a water curtain module, an audible and visual alarm module, a three-level alarm module and a ventilation module;
the ammonia gas detector is used for detecting the ammonia gas concentration of an ammonia gas area to be detected in real time to obtain a current ammonia gas concentration value, and sending the current ammonia gas concentration value to the ammonia gas leakage main control module;
the ammonia leakage main control module is used for receiving the current ammonia concentration value sent by the ammonia detector and inputting the current ammonia concentration value into an alarm grade selection mechanism so as to enable the alarm grade selection mechanism to output a corresponding alarm grade control strategy;
the ammonia leakage main control module is used for controlling the power supply module, the cut-off module, the refrigeration module, the pipeline electromagnetic valve, the water curtain module, the sound-light alarm module, the three-level alarm module and the ventilation module according to the alarm level control strategy.
2. The marine ammonia gas leakage detection system of claim 1, wherein the ammonia gas leakage main control module is configured to input the current ammonia gas concentration value into an alarm level selection mechanism, so that the alarm level selection mechanism outputs a corresponding alarm level control strategy, and specifically includes:
setting a first preset ammonia concentration threshold value, a second preset ammonia concentration threshold value and a third preset ammonia concentration threshold value;
inputting the current ammonia gas concentration value into an alarm level selection mechanism so that the alarm level selection mechanism judges whether the current ammonia gas concentration value exceeds the third preset ammonia gas concentration threshold value, and if so, outputting a three-level alarm control strategy;
if the current ammonia concentration value does not exceed the third preset ammonia concentration threshold value, judging whether the current ammonia concentration value exceeds the second preset ammonia concentration threshold value, and if so, outputting a secondary alarm control strategy;
and if the current ammonia concentration value does not exceed the second preset ammonia concentration threshold value, judging whether the current ammonia concentration value exceeds the first preset ammonia concentration threshold value, and if so, outputting a primary alarm control strategy.
3. The marine ammonia gas leakage detection system of claim 2, wherein the ammonia gas leakage main control module is configured to control the power supply module, the cut-off module, the refrigeration module, the pipeline solenoid valve, the water curtain module, the sound and light alarm module, the three-level alarm module and the ventilation module according to the alarm level control strategy, and specifically comprises:
when the primary alarm control strategy is output, the ammonia leakage main control module is used for controlling the tertiary alarm module to start a primary alarm instruction, controlling the acousto-optic alarm module to send acousto-optic early warning, and simultaneously controlling the cutting module to cut off the pipeline electromagnetic valve;
when the secondary alarm control strategy is output, the ammonia leakage main control module is used for controlling the tertiary alarm module to start a secondary alarm instruction, controlling the refrigeration module to stop running and controlling the cutting module to cut off the pipeline electromagnetic valve;
when the tertiary alarm control strategy is output, the ammonia leakage main control module is used for controlling the tertiary alarm module to start a tertiary alarm instruction, controlling the cut-off module to cut off the power supply module and the refrigeration module and simultaneously starting the water curtain module and the ventilation module.
4. The marine ammonia gas leakage detection system according to claim 1, wherein a plurality of ammonia gas detectors are arranged on the ammonia gas transmission pipeline according to a preset sequence, when ammonia gas leakage is detected, an ammonia gas concentration value detected by each ammonia gas detector is obtained, the ammonia gas concentration values detected by each ammonia gas detector are compared, a first ammonia gas detector corresponding to the maximum ammonia gas concentration value is obtained, and the position of the ammonia gas transmission pipeline where the first ammonia gas detector is located is set as an ammonia gas leakage point.
5. The marine ammonia gas leakage detection system of claim 1, wherein the ammonia gas leakage main control module is respectively connected with the power supply module, the cutoff module, the ammonia gas detector, the refrigeration module, the pipeline solenoid valve, the water curtain module, the audible and visual alarm module, the three-level alarm module and the ventilation module.
6. The marine ammonia gas leak detection system of claim 3, wherein the ammonia gas leak main control module comprises a display, an alarm display, a reset button, and an emergency stop button;
the display is used for setting initial states of the sound and light alarm module and the ammonia gas detector, and setting and displaying the first preset ammonia gas concentration threshold, the second preset ammonia gas concentration threshold and the third preset ammonia gas concentration threshold;
the alarm display is used for displaying an alarm indication of the three-level alarm module;
the reset button resets the alarm indication state of the three-level alarm module;
and the emergency stop button carries out emergency cut-off on the pipeline electromagnetic valve.
7. The marine ammonia gas leakage detection system of claim 1, wherein the line solenoid valve comprises a liquid line solenoid valve, a hot gas line solenoid valve, and a suction line solenoid valve;
the liquid pipeline electromagnetic valve is used for controlling the supercooled liquid refrigerant to be conveyed to a refrigeration area;
the suction pipeline electromagnetic valve is used for controlling the refrigerant after refrigeration heat exchange to flow back to the refrigeration area;
and the hot gas pipeline electromagnetic valve is used for controlling the steam compressed by the compressor to be conveyed to a refrigeration area so as to defrost the refrigeration equipment with hot ammonia.
8. The marine ammonia gas leakage detection system of claim 1, wherein the power module and the ammonia gas leakage main control module are disposed outside an ammonia gas detection area, and the power module is configured to supply power to the ammonia gas leakage main control module.
9. The marine ammonia gas leakage detection system according to claim 1, wherein the sound and light alarm module is configured in the ammonia gas to-be-detected area and is configured to receive a sound and light alarm control signal sent by the ammonia gas leakage main control module, so that the sound and light alarm module provides an early warning prompt for the ammonia gas to-be-detected area in the form of an audio-visual signal.
10. The marine ammonia gas leakage detection system of claim 1, wherein the shut-off module comprises a manual button shut-off signal for manually shutting off the pipeline solenoid valve and a power module shut-off signal for automatically shutting off power to the refrigeration module from the power module.
11. The marine ammonia gas leakage detection system of claim 1, wherein the ventilation module is configured to receive a ventilation signal output by the ammonia gas leakage main control module, and discharge ammonia gas to the area to be detected for ammonia gas after receiving the ventilation signal.
12. The marine ammonia gas leakage detection system according to claim 1, wherein the water curtain module is configured to receive a water curtain signal output by the ammonia gas leakage main control module, and perform chemical combination reaction dilution on the ammonia gas in the ammonia gas detection area after receiving the water curtain signal, so as to convert the ammonia gas into ammonia hydrate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211092300.8A CN115628854A (en) | 2022-09-07 | 2022-09-07 | Marine ammonia leakage detection system |
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| CN202211092300.8A CN115628854A (en) | 2022-09-07 | 2022-09-07 | Marine ammonia leakage detection system |
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