CN117382829A - Ship methanol fuel safety system - Google Patents
Ship methanol fuel safety system Download PDFInfo
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- CN117382829A CN117382829A CN202311324745.9A CN202311324745A CN117382829A CN 117382829 A CN117382829 A CN 117382829A CN 202311324745 A CN202311324745 A CN 202311324745A CN 117382829 A CN117382829 A CN 117382829A
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 1707
- 239000000446 fuel Substances 0.000 title claims abstract description 81
- 238000001514 detection method Methods 0.000 claims abstract description 137
- 230000009471 action Effects 0.000 claims abstract description 92
- 238000012544 monitoring process Methods 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims description 75
- 238000010926 purge Methods 0.000 claims description 20
- 239000000523 sample Substances 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 41
- 238000002360 preparation method Methods 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 208000003164 Diplopia Diseases 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 208000029444 double vision Diseases 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
- B63B17/0027—Tanks for fuel or the like ; Accessories therefor, e.g. tank filler caps
- B63B17/0036—Arrangements for minimizing pollution by accidents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
- B63B25/082—Arrangements for minimizing pollution by accidents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B45/00—Arrangements or adaptations of signalling or lighting devices
-
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Alarm Systems (AREA)
Abstract
The invention belongs to the technical field of ships, and particularly discloses a ship methanol fuel safety system, which comprises: the system comprises a methanol detection module, a main control module and a safety action execution module, wherein the methanol detection module is used for controlling a methanol detection unit to acquire methanol detection data; the main control module is used for searching a corresponding safety action strategy in a preset methanol safety strategy set according to the methanol monitoring data; the safety action executing module is used for controlling the methanol executing mechanism to execute the safety action according to the safety action strategy. The ship methanol fuel safety system disclosed by the invention can accurately detect whether the ship methanol fuel is leaked, and adopts proper emergency cutting measures when the methanol fuel is leaked, so that a leakage source is cut off in time, and the safety of personnel and ships is further effectively protected.
Description
Technical Field
The invention relates to the technical field of ships, in particular to a methanol fuel safety system of a ship.
Background
Methanol is used as a novel ship green power fuel and has the advantages of sufficient supply, low price and low pollution discharge after combustion. However, due to the characteristics of low flash point, inflammability, explosiveness, toxicity, volatility, invisible flame during combustion and the like of methanol, the requirement for using methanol fuel on ships is high, and certain measures are needed to protect personnel and ships. At present, no methanol fuel safety system specially applicable to ships using and transporting methanol fuel exists, and the existing ships using methanol fuel have the risk of leakage of methanol fuel and cannot guarantee the running safety of the ships.
Disclosure of Invention
The invention provides a ship methanol fuel safety system, which is characterized in that a ship methanol fuel is detected in real time in the conveying process, a corresponding safety action strategy is determined according to collected methanol detection data, and a corresponding methanol executing mechanism is controlled to execute the safety action according to the safety action strategy, so that whether the ship methanol fuel leaks can be accurately detected, and an appropriate emergency cutting measure is adopted when the methanol fuel leaks, so that a leakage source is cut off in time, and the safety of personnel and ships is effectively protected.
To achieve the purpose, the invention adopts the following technical scheme:
a marine methanol fuel safety system comprising: a methanol detection module, a main control module and a safety action execution module,
the methanol detection module is used for controlling the methanol detection unit to acquire methanol detection data;
the main control module is used for searching a corresponding safety action strategy in a preset methanol safety strategy set according to the methanol monitoring data;
the safety action executing module is used for controlling the methanol executing mechanism to execute the safety action according to the safety action strategy.
As a preferable technical scheme of the methanol fuel safety system of the ship, the methanol detection unit at least comprises: the methanol gas detection unit, the methanol liquid detection unit, the methanol fire detection unit and the safety detection unit of the daily cabin of methyl alcohol, control methyl alcohol detection unit gathers methyl alcohol detection data, include:
controlling the methanol gas detection unit to acquire the concentration of the methanol gas acquired by the methanol gas detection probe;
controlling the methanol liquid detection unit to acquire a first liquid level height acquired by the methanol liquid leakage floater;
controlling the methanol fire alarm detection unit to acquire methanol fire alarm data detected by the fire alarm probe;
and controlling the safety detection unit of the daily methanol cabin to obtain the second liquid level height, the cabin temperature and the cabin pressure detected by the methanol liquid level detection sensor, the temperature sensor and the pressure sensor.
As a preferable technical solution of a methanol fuel safety system of a ship, the searching for a corresponding safety action strategy in a preset methanol safety strategy set according to the methanol monitoring data includes:
and determining a safety action set according to the methanol monitoring data and the preset methanol safety conditions in a methanol safety system logic table of the preset methanol safety strategy set.
As a preferable technical scheme of the methanol fuel safety system of the ship, in the methanol safety system logic table of the preset methanol safety policy set, the safety action set is determined according to the methanol monitoring data and the preset methanol safety conditions, and the method comprises at least one of the following steps:
when the methanol monitoring data meet that the methanol gas concentration is greater than or equal to a preset methanol gas concentration threshold, determining the safety action set in the methanol safety system logic table as follows: the main control box of the methanol safety system is controlled to trigger an alarm prompt, the main control box of the methanol main valve is controlled to cut off the output valve of the methanol daily cabin, the methanol supply unit is cut off, and the inerting purging system is controlled to remove residual methanol in the pipeline and equipment;
when the methanol monitoring data meet that the first liquid level height is greater than or equal to a first preset liquid level height threshold value, determining the safety action set in the methanol safety system logic table as follows: the main control box of the methanol safety system is controlled to trigger an alarm prompt, the main control box of the methanol main valve is controlled to cut off the output valve of the methanol daily cabin, the methanol supply unit is cut off, and the inerting purging system is controlled to remove residual methanol in the pipeline and equipment;
when the methanol monitoring data meet that the methanol fire alarm data is larger than or equal to a preset fire alarm data threshold, determining the safety action set in the methanol safety system logic table as follows: the control main control box of the fire alarm triggers an alarm prompt, the control main control box of the methanol valve cuts off an output valve of the daily methanol cabin, cuts off a methanol supply unit, the control main safety module control box cuts off a main methanol input main valve of the main engine, the control main safety module control box stops a main engine methanol mode, the control main engine safety module control box is switched into a fuel mode, and an inerting purging system is controlled to remove residual methanol in pipelines and equipment;
when the methanol monitoring data meet that the second liquid level height is greater than or equal to a second preset liquid level height threshold value, determining the safety action set in the methanol safety system logic table as follows: the main control box of the methanol safety system is controlled to trigger an alarm prompt, the main control box of the methanol main valve is controlled to cut off the input valve of the methanol daily-use cabin, and the main control box of the methanol main valve is controlled to cut off the delivery pump of the methanol daily-use cabin;
when the methanol monitoring data meet that the temperature in the cabin and the pressure in the cabin are respectively greater than or equal to a preset temperature threshold value and a preset pressure threshold value, determining the safety action set in the methanol safety system logic table as follows: and controlling the main control box of the methanol safety system to trigger an alarm prompt.
As a preferable technical solution of the marine methanol fuel safety system, the controlling the methanol actuating mechanism to execute the safety action according to the safety action policy includes:
and controlling the corresponding executing mechanism to execute the safety action set according to the safety action set in the safety action strategy.
As a preferable technical scheme of the methanol fuel safety system of the ship, the executing mechanism at least comprises: the system comprises a methanol safety system main control box, a fire alarm main control box, a methanol main valve control box, a methanol supply unit, a host safety module control box and an inerting purging system.
As a preferable technical scheme of the ship methanol fuel safety system, the methanol detection module further comprises an image acquisition unit, wherein the image acquisition unit is used for combining the methanol fire detection unit to monitor the safety condition of the ship in real time.
As a preferable technical scheme of the ship methanol fuel safety system, the methanol detection module further comprises a methanol ventilation unit, wherein the methanol ventilation unit is used for extracting the methanol escaping from the methanol conveying line.
As a preferable technical scheme of the ship methanol fuel safety system, the methanol detection module further comprises a gas flow detection unit, wherein the gas flow detection unit is used for monitoring the gas flow on the methanol conveying line.
As a preferable technical solution of the methanol fuel safety system of a ship, the methanol detection module further includes a manual cut-off button, and the setting area of the manual cut-off button includes at least: a methanol storage area and a methanol transportation route area.
The invention has the beneficial effects that:
according to the ship methanol fuel safety system provided by the invention, the methanol detection module is used for controlling the methanol detection unit to acquire methanol detection data of the methanol fuel in the conveying process, the main control module is used for searching the corresponding safety action strategy in the preset methanol safety strategy set according to the methanol detection data, and the safety action execution module is used for controlling the corresponding methanol execution mechanism to execute the safety action according to the safety action strategy, so that whether the ship methanol fuel leaks can be accurately detected, and appropriate emergency cutting measures are adopted when the methanol fuel leaks, so that a leakage source is cut off in time, and the safety of personnel and ships is effectively protected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a methanol fuel safety system for a ship according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another methanol fuel safety system for a ship according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a methanol fuel safety system for a ship, including:
the system comprises a methanol detection module 110, a main control module 120 and a safety action execution module 130. The methanol detection module 110 is used for controlling the methanol detection unit to collect methanol detection data; the main control module 120 is configured to search a corresponding security action policy in a preset methanol security policy set according to the methanol monitoring data; the safety action executing module 130 is configured to control the methanol executing mechanism to execute the safety action according to the safety action policy.
In the embodiment of the invention, the methanol detection unit may be a detection unit designed for a methanol fuel safety system of a ship according to the relevant characteristics of methanol and the use characteristics of the methanol fuel ship, and the methanol detection unit may at least include: the methanol gas detection unit, the methanol liquid detection unit, the methanol fire detection unit, the methanol daily cabin safety detection unit and the like, and the methanol detection unit can control the corresponding sensor to acquire corresponding methanol detection data. Methanol detection data may include, but is not limited to: the methanol liquid level can at least comprise two parts, namely, the concentration of methanol gas, the liquid level of the methanol, methanol fire alarm data (temperature, flame signals, smoke signals and the like), the temperature in a daily cabin of the methanol, the pressure in the daily cabin of the methanol and the like: firstly, the liquid level of the methanol liquid which is collected at the lowest point of the enclosing space on the methanol conveying line, such as a methanol fuel preparation room, a double-wall pipe outer pipe and other areas and represents the leakage of the methanol liquid; and secondly, the liquid level of the methanol in the liquid level of the methanol fuel in the methanol storage tank collected in the daily methanol cabin.
The preset methanol safety strategy set may be understood as a pre-configured strategy set for ensuring safety of a methanol-fueled ship, and may include one or more safety action strategies, and may include, but is not limited to: selecting a corresponding safety action set from a methanol safety system logic table according to the data type of the methanol monitoring data, controlling a methanol executing mechanism to execute the corresponding safety action according to the safety action set, determining the corresponding safety action set when the methanol monitoring data meets the preset condition, controlling the methanol executing mechanism to execute the corresponding safety action according to the safety action set, and the like.
The methanol actuator may be understood as a device on a methanol-fuelled vessel for performing a safety action, the methanol actuator may comprise at least: a main control box of a methanol safety system, a fire alarm main control box, a main methanol valve control box, a methanol supply unit, a main machine safety module control box, an inerting purging system and the like. Safety actions may refer to actions for controlling the methanol actuator to perform in accordance with a safety action policy, which may include, but are not limited to: the main control box of the methanol safety system is controlled to trigger an alarm prompt, the fire main control box is controlled to trigger an alarm prompt, the main methanol valve control box is controlled to cut off the output valve of the daily methanol tank, the main methanol valve control box is controlled to cut off the input valve of the daily methanol tank, the main methanol valve control box is controlled to cut off the delivery pump of the daily methanol tank, the methanol supply unit is cut off, the main methanol safety module control box is controlled to cut off the main methanol input valve of the main methanol, the main methanol safety module control box is controlled to stop the main methanol mode, the main methanol safety module control box is controlled to switch to the fuel mode, the inerting purging system is controlled to clear residual methanol in pipelines and equipment, and the like.
Specifically, the methanol detection module 110 in the marine methanol fuel safety system can control the preset methanol detection unit to collect corresponding methanol detection data in real time, such as methanol gas concentration, methanol liquid level, methanol fire alarm data, temperature in the methanol daily cabin, pressure in the methanol daily cabin, and the like; then, the obtained methanol detection data is sent to the main control module 120, and the main control module 120 searches the corresponding security action policy in the preset methanol security policy set according to the methanol detection data, where the manner of searching the corresponding security action policy in the preset methanol security policy set according to the methanol detection data may include, but is not limited to, the following: selecting a corresponding safety action set from a methanol safety system logic table according to the data type of the methanol monitoring data; determining a corresponding safety action set and the like when the methanol monitoring data meet preset conditions in a preset methanol safety strategy set; finally, the safety action executing module 130 controls the corresponding methanol executing mechanism to execute the corresponding safety action according to the determined safety action strategy.
Further, on the basis of the above embodiment of the invention, the methanol detection unit includes at least: the methanol gas detection unit, the methanol liquid detection unit, the methanol fire detection unit and the methanol daily cabin safety detection unit.
In the embodiment of the invention, the methanol gas detection unit can be arranged in a surrounding space on a methanol conveying line, such as a methanol fuel preparation room, a double-wall pipe outer pipe and other areas, and is used for detecting the concentration of methanol gas in air in real time; the methanol liquid detection unit can be arranged in a surrounding space on the methanol conveying line, such as a surrounding well of the lowest point of the area of a methanol fuel preparation room, a double-wall pipe outer pipe and the like, and is used for collecting the liquid level of the methanol fuel leakage liquid in real time; the methanol fire alarm detection unit can be arranged in a surrounding space on the methanol conveying line, such as a personnel access area, the periphery of the methanol storage tank and the like, and is used for monitoring the methanol fire alarm condition of each area in real time; the safety detection unit of the methanol daily cabin can be configured in the methanol daily cabin and is used for monitoring various methanol safety indexes in the methanol daily cabin in real time, such as cabin temperature, cabin pressure, methanol fuel liquid level in the methanol storage tank and the like.
Further, on the basis of the embodiment of the present invention, controlling the methanol detection unit to collect methanol detection data includes:
controlling a methanol gas detection unit to acquire the concentration of the methanol gas acquired by a methanol gas detection probe;
controlling a methanol liquid detection unit to acquire a first liquid level height acquired by a methanol liquid leakage floater;
controlling a methanol fire detection unit to acquire methanol fire data detected by a fire probe;
and controlling a safety detection unit of the daily methanol cabin to obtain the second liquid level height, the cabin temperature and the cabin pressure detected by the methanol liquid level detection sensor, the temperature sensor and the pressure sensor.
The first liquid level may be a liquid level of a methanol fuel leakage liquid collected by the methanol liquid leakage floater in a closed space on the methanol transfer line. The methanol fire alarm data may include various data related to the fire alarm collected by the fire probe, such as temperature, flame signals, smoke signals, etc. The second liquid level may refer to a liquid level of the methanol fuel in the methanol storage tank collected by the methanol liquid level detection sensor in the methanol daily use compartment, and the methanol liquid level detection sensor may include: high-level floats of a methanol daily-use cabin, gao Gaowei floats and the like.
In the implementation of the invention, the following detection units can be arranged for the methanol fuel safety system of the ship according to the related characteristics of methanol and the use characteristics of the methanol fuel ship: the methanol gas detection unit, the methanol liquid detection unit, the methanol fire detection unit and the methanol daily cabin safety detection unit, and according to actual methanol safety requirements, methanol gas detection probes, methanol liquid leakage floats, fire probes, methanol liquid level detection sensors, temperature sensors, pressure sensors and other sensor devices are arranged in the methanol safety monitoring areas such as the enclosed space and the methanol daily cabin on the methanol conveying line in advance, and further the methanol detection module 110 can respectively control the methanol gas detection unit to acquire the methanol gas concentration acquired by the methanol gas detection probes, control the methanol liquid detection unit to acquire the first liquid level acquired by the methanol liquid leakage floats, control the methanol fire detection unit to acquire the methanol fire data detected by the fire probes, and control the methanol daily cabin safety detection unit to acquire the second liquid level detected by the methanol liquid level detection sensors, the temperature sensors and the pressure sensors, the temperature in the cabin and the pressure in the cabin.
Further, on the basis of the above embodiment of the present invention, searching for a corresponding security action policy in a preset methanol security policy set according to the methanol monitoring data includes:
and determining a safety action set according to the methanol monitoring data and the preset methanol safety conditions in a methanol safety system logic table of a preset methanol safety strategy set.
The methanol safety system logic table can be understood as a logic table preconfigured for the ship methanol fuel safety system, and the methanol safety system logic table at least comprises information such as methanol safety judgment conditions and corresponding safety actions. The preset methanol safety condition may be a preconfigured condition for judging whether the methanol monitoring data meets the methanol safety requirement, and the preset methanol safety condition may include, but is not limited to: the concentration of the methanol gas is larger than or equal to a preset methanol gas concentration threshold, the methanol fire alarm data is larger than or equal to a preset fire alarm data threshold, the liquid level height of the methanol liquid is larger than a preset liquid level height threshold, the temperature in the cabin is larger than or equal to a preset temperature threshold, the pressure in the cabin is larger than or equal to a preset pressure threshold and the like.
In the embodiment of the present invention, the main control module 120 may determine whether the acquired methanol monitoring data meets a preset methanol safety condition in a pre-configured methanol safety system logic table, and if not, search a corresponding safety action set in the methanol safety system logic table, where the preset methanol safety condition may include, but is not limited to: the concentration of the methanol gas is larger than or equal to a preset methanol gas concentration threshold, the methanol fire alarm data is larger than or equal to a preset fire alarm data threshold, the liquid level height of the methanol liquid is larger than a preset liquid level height threshold, the temperature in the cabin is larger than or equal to a preset temperature threshold, the pressure in the cabin is larger than or equal to a preset pressure threshold and the like.
Further, on the basis of the above embodiment of the present invention, in the methanol safety system logic table of the preset methanol safety policy set, the safety action set is determined according to the methanol monitoring data and the preset methanol safety condition, including at least one of the following:
when the methanol monitoring data meet that the methanol gas concentration is greater than or equal to a preset methanol gas concentration threshold, determining a safety action set in a methanol safety system logic table as follows: the main control box of the methanol safety system is controlled to trigger an alarm prompt, the main control box of the methanol main valve is controlled to cut off the output valve of the methanol daily cabin, the methanol supply unit is cut off, and the inerting purging system is controlled to remove residual methanol in the pipeline and equipment;
when the methanol monitoring data meet that the first liquid level height is larger than or equal to a first preset liquid level height threshold value, determining a safety action set in a methanol safety system logic table as follows: the main control box of the methanol safety system is controlled to trigger an alarm prompt, the main control box of the methanol main valve is controlled to cut off the output valve of the methanol daily cabin, the methanol supply unit is cut off, and the inerting purging system is controlled to remove residual methanol in the pipeline and equipment;
when the methanol monitoring data meet that the methanol fire alarm data is larger than or equal to a preset fire alarm data threshold value, determining a safety action set in a methanol safety system logic table as follows: the control main control box of the fire alarm triggers an alarm prompt, the control main control box of the methanol valve cuts off an output valve of the daily methanol cabin, cuts off a methanol supply unit, the control main safety module control box cuts off a main methanol input main valve of the main engine, the control main safety module control box stops a main engine methanol mode, the control main engine safety module control box is switched into a fuel mode, and an inerting purging system is controlled to remove residual methanol in pipelines and equipment;
when the methanol monitoring data meet that the second liquid level height is larger than or equal to a second preset liquid level height threshold value, determining a safety action set in a methanol safety system logic table as follows: the main control box of the methanol safety system is controlled to trigger an alarm prompt, the main control box of the methanol main valve is controlled to cut off the input valve of the methanol daily-use cabin, and the main control box of the methanol main valve is controlled to cut off the delivery pump of the methanol daily-use cabin;
when the methanol monitoring data meet that the temperature in the cabin and the pressure in the cabin are respectively greater than or equal to a preset temperature threshold value and a preset pressure threshold value, determining a safety action set in a methanol safety system logic table as follows: and controlling the main control box of the methanol safety system to trigger an alarm prompt.
In the embodiment of the invention, the inerting and purging system can be used for inerting and purging equipment and related connecting pipelines in areas such as a methanol daily cabin, a methanol user (a ship host), a methanol supply unit and the like, and residual methanol in the pipeline and the equipment can be removed by using the inerting and purging system, so that the risk of the methanol forming a flammable and explosive environment is eliminated. Furthermore, the inerting purging system can be used for filling nitrogen into the methanol daily cabin, so that the methanol daily cabin is in an inerting environment under the condition that the liquid level in the cabin shakes in the navigation process of a ship, and the danger of burning explosion caused by air mixing is avoided. The inerting means that nitrogen is filled to reduce the concentration of oxygen in the methanol daily tank, so that the methanol fuel in the methanol daily tank is prevented from being ignited or exploded.
Further, on the basis of the above embodiment of the present invention, the methanol actuating mechanism at least includes: the system comprises a methanol safety system main control box, a fire alarm main control box, a methanol main valve control box, a methanol supply unit, a host safety module control box and an inerting purging system.
In the embodiment of the invention, the main control box of the methanol safety system can refer to the main control box of the methanol fuel safety system of the ship provided by the embodiment of the invention, and is used for realizing the dispatching and control of the safety of the methanol fuel of the whole ship. The fire alarm master control box can be a master control box related to a methanol fire alarm, and meanwhile, the fire alarm master control box can be in butt joint with a full-ship fire alarm system, when the methanol fire alarm occurs, the full-ship fire alarm can be triggered, and the methanol fire alarm is reminded to be the methanol fire alarm at the fire alarm master control box and a related double vision board so as to remind a crew to carefully treat. The main methanol valve control box can be used for controlling a main methanol tank output valve, a main methanol tank input valve and a main methanol tank delivery pump. The host safety module control box may refer to a main control box related to safety of a methanol user (a ship host).
Further, on the basis of the above embodiment of the present invention, the methanol detection module 110 further includes an image acquisition unit, where the image acquisition unit is used to combine with the methanol fire detection unit to monitor the safety condition of the ship in real time.
In the embodiment of the present invention, the methanol detection module 110 may further include an image acquisition unit, which may be, for example, an image acquisition device such as an infrared camera, where the image acquisition unit may be combined with the methanol fire detection unit to monitor the safety condition of the ship in real time, and may quickly locate the ignition point when the methanol fire occurs, thereby helping personnel to implement fire extinguishment in a targeted manner.
Further, the methanol detection module 110 further includes a methanol ventilation unit for extracting the methanol escaping from the methanol delivery line.
In the embodiment of the present invention, because forced ventilation is required in the enclosed space on the methanol delivery line, such as the area between the methanol pump stations, the outer tube of the double-wall tube, etc., the methanol detection module 110 may further include a methanol ventilation unit, which may be used to extract the methanol escaping from the methanol delivery line, so as to prevent the occurrence of methanol safety accidents caused by leakage of methanol fuel.
Further, the methanol detection module 110 further includes a gas flow rate detection unit for monitoring the gas flow rate on the methanol delivery line, based on the above embodiment of the invention.
In the embodiment of the present invention, the methanol detection module 110 further includes a gas flow detection unit, where the gas flow detection unit may be used to monitor the gas flow on the methanol delivery line in real time, and control the main control box of the methanol safety system to trigger an alarm prompt when the gas flow is lower than a preset flow threshold.
Further, on the basis of the above embodiment of the present invention, the methanol detection module 110 further includes a manual cut-off button, and the setting area of the manual switch button includes at least: a methanol storage area and a methanol transportation route area.
In an embodiment of the present invention, the methanol detection module 110 may further include a plurality of manual shutdown buttons, where a setup area of the manual shutdown buttons includes at least: a methanol storage area and a methanol transportation route area. In a specific embodiment, the setting area of the manual cut-off button may include, but is not limited to: cabin bottom, cabin lower platform, cabin upper platform, centralized control room, outside the methanol fuel preparation room door, near the methanol daily cabin, cab, etc.
Furthermore, on the basis of the embodiment of the invention, the methanol fuel safety system for the ship provided by the embodiment of the invention has the advantages that the related electrical components are completely independent of other electrical systems, and the special power supply and the special components are used, so that the methanol fuel safety of the ship can be safely ensured even when the whole ship loses electricity, and the safety and the reliability are higher.
The embodiment of the invention provides a ship methanol fuel safety system, which comprises: the system comprises a methanol detection module, a main control module and a safety action execution module, wherein the methanol detection module is used for controlling a methanol detection unit to acquire methanol detection data; the main control module is used for searching a corresponding safety action strategy in a preset methanol safety strategy set according to the methanol monitoring data; the safety action executing module is used for controlling the methanol executing mechanism to execute the safety action according to the safety action strategy. By adopting the ship methanol fuel safety system, whether the ship methanol fuel leaks or not can be accurately detected, and proper emergency cutting measures are adopted when the methanol fuel leaks, so that a leakage source is cut off in time, and the safety of personnel and ships is effectively protected.
Fig. 2 is a schematic structural diagram of another methanol fuel safety system for a ship according to an embodiment of the present invention. As shown in fig. 2, according to the related characteristics of methanol and the use characteristics of a methanol fuel ship, four detection modes are designed: methanol gas detection, methanol liquid detection, methanol fire detection and methanol daily use cabin safety detection are specifically described as follows:
1. methanol gas detection: a special methanol gas leakage detection probe is arranged in a surrounding space on a methanol conveying line, such as a methanol fuel preparation room, a double-wall pipe outer pipe and the like, and is used for detecting the concentration of methanol gas in air, and when the concentration of the methanol gas is greater than or equal to a preset methanol gas concentration threshold value, an alarm and a safety action are triggered.
2. Methanol liquid detection: and a surrounding well is arranged at the lowest point of the area such as a methanol fuel preparation room, a double-wall pipe outer pipe and the like in the surrounding space on the methanol conveying line, a methanol liquid leakage floater is arranged in the surrounding well for collecting the liquid level of the methanol fuel leakage liquid, and an alarm and a safety action are triggered when the liquid level is larger than a preset liquid level threshold value.
3. Methanol fire detection: the surrounding space that has personnel to come in and go out and methyl alcohol holding vessel are regional such as all around set up infrared camera and fire alarm probe on the methyl alcohol transfer chain, and after the methyl alcohol was on fire appears, fire alarm probe can accurately and in time detect the fire alarm to trigger and safe action, infrared camera can shoot the picture of putting out a fire in the very first time simultaneously, help personnel put out a fire.
4. Safety detection of a methanol daily cabin: the methanol daily cabin is respectively provided with a methanol liquid level detection sensor, a temperature sensor and a pressure sensor, and is used for monitoring indexes such as the liquid level height, the temperature, the pressure and the like of the methanol fuel in the methanol storage tank of the methanol daily cabin and triggering alarm and safety action when the indexes are abnormal.
The invention covers various safety actions, ensures that related equipment is automatically cut off under the accident condition of the ship methanol fuel safety system, and is provided with a remarkable manual cut-off button near a protection area.
Exemplary security actions include the following:
1. the enclosed space on the methanol delivery line, such as the area between methanol pump stations, the outer tube of the double-wall tube, and the like, is subjected to forced ventilation. When methanol is flowing through, the ventilation of these areas must be forced open.
2. The delivery pump of the daily cabin of methanol is cut off.
3. The methanol supply unit was shut off and the supply unit outlet valve was closed.
4. And cutting off a methanol user (a ship host), and closing the methanol valve group of the methanol user.
5. And cutting off the inlet and outlet valves of the methanol daily use cabin, and closing the inlet and outlet valves of the methanol daily use cabin.
6. After the related equipment is shut off, for example, a methanol user (a ship host) can purge a methanol pipeline by using nitrogen, and purge the residual methanol in the pipeline back to the methanol daily-use cabin.
7. The methanol fire alarm is in butt joint with the whole-ship fire alarm system, when the methanol fire alarm occurs, the whole-ship fire alarm can be triggered, and the methanol fire alarm is reminded to be the methanol fire alarm at the fire master control box and the related double vision board, so that a shipman is reminded to carefully treat the fire alarm.
8. A certain manual cut-off button is arranged in a region where methanol is stored and transported, and when a person finds potential safety hazards, the methanol equipment in the region can be manually cut off. The setting area of the manual cut-off button may include, but is not limited to: cabin bottom, cabin lower platform, cabin upper platform, centralized control room, outside the methanol fuel preparation room door, near the methanol daily cabin, cab, etc.
9. After the methanol user (ship main engine) stops the methanol mode, the ship main engine can be immediately converted into the fuel mode, and the ship can not lose power.
The logic table of the methanol safety system according to the embodiment of the invention is shown in the following table:
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further, on the basis of the above embodiment of the present invention, the protection scenario related to the methanol fuel safety system of a ship provided by the embodiment of the present invention may include the following: (1) a pipeline from the methanol cargo oil tank to the methanol fuel daily tank and a delivery pump; (2) a methanol daily use cabin; (3) methanol fuel preparation room; (4) cabin methanol fuel double-wall pipe; (5) the space where the methanol user is located; (6) a methanol delivery line.
The embodiment of the invention provides a ship methanol fuel safety system, which can accurately detect whether the methanol fuel leaks in the conveying process in real time, and adopts proper emergency cutting measures when the methanol fuel leaks, so that a leakage source is cut off in time, and the safety of personnel and ships is effectively protected; meanwhile, the electrical components related to the system are completely independent of other electrical systems, and the special power supply and the special components are used, so that the methanol fuel safety of the ship can be safely ensured when the whole ship loses electricity, and the safety and the reliability are higher; the method has low input cost and operation cost, and can reduce carbon emission and sulfur emission of the ship.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. A marine methanol fuel safety system, the system comprising: the system comprises a methanol detection module, a main control module and a safety action execution module;
the methanol detection module is used for controlling the methanol detection unit to acquire methanol detection data;
the main control module is used for searching a corresponding safety action strategy in a preset methanol safety strategy set according to the methanol monitoring data;
the safety action executing module is used for controlling the methanol executing mechanism to execute the safety action according to the safety action strategy.
2. The system according to claim 1, wherein the methanol detection unit comprises at least: the methanol gas detection unit, the methanol liquid detection unit, the methanol fire detection unit and the safety detection unit of the daily cabin of methyl alcohol, control methyl alcohol detection unit gathers methyl alcohol detection data, include:
controlling the methanol gas detection unit to acquire the concentration of the methanol gas acquired by the methanol gas detection probe;
controlling the methanol liquid detection unit to acquire a first liquid level height acquired by the methanol liquid leakage floater;
controlling the methanol fire alarm detection unit to acquire methanol fire alarm data detected by the fire alarm probe;
and controlling the safety detection unit of the daily methanol cabin to obtain the second liquid level height, the cabin temperature and the cabin pressure detected by the methanol liquid level detection sensor, the temperature sensor and the pressure sensor.
3. The system of claim 1, wherein the searching for a corresponding safety action policy in a preset methanol safety policy set according to the methanol monitoring data comprises:
and determining a safety action set according to the methanol monitoring data and the preset methanol safety conditions in a methanol safety system logic table of the preset methanol safety strategy set.
4. The system of claim 3, wherein the determining a set of security actions in the methanol security system logic table of the set of preset methanol security policies according to the methanol monitoring data and preset methanol security conditions comprises at least one of:
when the methanol monitoring data meet that the methanol gas concentration is greater than or equal to a preset methanol gas concentration threshold, determining the safety action set in the methanol safety system logic table as follows: the main control box of the methanol safety system is controlled to trigger an alarm prompt, the main control box of the methanol main valve is controlled to cut off the output valve of the methanol daily cabin, the methanol supply unit is cut off, and the inerting purging system is controlled to remove residual methanol in the pipeline and equipment;
when the methanol monitoring data meet that the first liquid level height is greater than or equal to a first preset liquid level height threshold value, determining the safety action set in the methanol safety system logic table as follows: the main control box of the methanol safety system is controlled to trigger an alarm prompt, the main control box of the methanol main valve is controlled to cut off the output valve of the methanol daily cabin, the methanol supply unit is cut off, and the inerting purging system is controlled to remove residual methanol in the pipeline and equipment;
when the methanol monitoring data meet that the methanol fire alarm data is larger than or equal to a preset fire alarm data threshold, determining the safety action set in the methanol safety system logic table as follows: the control main control box of the fire alarm triggers an alarm prompt, the control main control box of the methanol valve cuts off an output valve of the daily methanol cabin, cuts off a methanol supply unit, the control main safety module control box cuts off a main methanol input main valve of the main engine, the control main safety module control box stops a main engine methanol mode, the control main engine safety module control box is switched into a fuel mode, and an inerting purging system is controlled to remove residual methanol in pipelines and equipment;
when the methanol monitoring data meet that the second liquid level height is greater than or equal to a second preset liquid level height threshold value, determining the safety action set in the methanol safety system logic table as follows: the main control box of the methanol safety system is controlled to trigger an alarm prompt, the main control box of the methanol main valve is controlled to cut off the input valve of the methanol daily-use cabin, and the main control box of the methanol main valve is controlled to cut off the delivery pump of the methanol daily-use cabin;
when the methanol monitoring data meet that the temperature in the cabin and the pressure in the cabin are respectively greater than or equal to a preset temperature threshold value and a preset pressure threshold value, determining the safety action set in the methanol safety system logic table as follows: and controlling the main control box of the methanol safety system to trigger an alarm prompt.
5. The system of claim 1, wherein the controlling the methanol actuator to perform the safety action according to the safety action strategy comprises:
and controlling the corresponding methanol executing mechanism to execute the safety action set according to the safety action set in the safety action strategy.
6. The system of claim 1, wherein the methanol actuator comprises at least: the system comprises a methanol safety system main control box, a fire alarm main control box, a methanol main valve control box, a methanol supply unit, a host safety module control box and an inerting purging system.
7. The system of claim 1, wherein the methanol detection module further comprises an image acquisition unit for monitoring the safety condition of the vessel in real time in conjunction with the methanol fire detection unit.
8. The system of claim 1, wherein the methanol detection module further comprises a methanol ventilation unit for extracting methanol escaping on the methanol delivery line.
9. The system of claim 1, wherein the methanol detection module further comprises a gas flow detection unit for monitoring a gas flow on a methanol delivery line.
10. The system of claim 1, wherein the methanol detection module further comprises a manual cut-off button, the manual switch button having a setting area comprising at least: a methanol storage area and a methanol transportation route area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311324745.9A CN117382829A (en) | 2023-10-12 | 2023-10-12 | Ship methanol fuel safety system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311324745.9A CN117382829A (en) | 2023-10-12 | 2023-10-12 | Ship methanol fuel safety system |
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| CN117382829A true CN117382829A (en) | 2024-01-12 |
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| CN202311324745.9A Pending CN117382829A (en) | 2023-10-12 | 2023-10-12 | Ship methanol fuel safety system |
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