CN116443232A - Methanol fuel supply equipment based on ship and operation method - Google Patents
Methanol fuel supply equipment based on ship and operation method Download PDFInfo
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- CN116443232A CN116443232A CN202310684321.7A CN202310684321A CN116443232A CN 116443232 A CN116443232 A CN 116443232A CN 202310684321 A CN202310684321 A CN 202310684321A CN 116443232 A CN116443232 A CN 116443232A
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- module
- methanol
- control module
- pipe
- fuel supply
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 682
- 239000000446 fuel Substances 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003860 storage Methods 0.000 claims abstract description 55
- 238000011084 recovery Methods 0.000 claims abstract description 42
- 238000005406 washing Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 9
- 230000002730 additional effect Effects 0.000 claims description 3
- 238000005429 filling process Methods 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims 2
- 239000007789 gas Substances 0.000 description 60
- 239000003570 air Substances 0.000 description 53
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 28
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 238000004880 explosion Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000002360 explosive Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010763 heavy fuel oil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to a methanol fuel supply device based on a ship and an operation method thereof, belonging to the technical field of ship devices, wherein the methanol fuel supply device comprises a methanol storage bin, a methanol daily bin, a recovery module and a main transportation module; the main transportation module comprises double-wall pipes, the methanol storage bin, the methanol daily bin and the ship power system are connected through the double-wall pipes in sequence, any one of the double-wall pipes comprises an inner pipe and an outer pipe, and a buffer cavity is formed by a space between the outer pipe and the inner pipe; the sensor module comprises an air pressure sensor, the air pressure sensor respectively detects the air pressure inside the inner pipe, the air pressure outside the buffer cavity and the air pressure outside the outer pipe and uploads the air pressure to the control module, and the control module is electrically connected with the recovery module and controls the recovery module to recover the buffer cavity; and the control module controls the power of the recovery module according to the gas pressure data; it gives consideration to the recovery function and the safety in the recovery process.
Description
Technical Field
The invention belongs to the technical field of ship equipment, and particularly relates to methanol fuel supply equipment based on a ship and an operation method.
Background
With the increasing emphasis of environmental protection problems, the defect of large pollution after the combustion of traditional fuels also makes the traditional fuels need to be replaced, and methanol (CH 3 OH) is an organic compound, has low pollution of combustion products and simple preparation, and is a main choice for replacing the traditional fuels.
At present, the current methanol fuel supply equipment is usually designed for small ships and cannot take account of large ships, so that Chinese patent CN113277054B discloses a marine methanol supply system, which comprises a methanol storage bin, a daily methanol bin, a methanol supply module, a host module and a nitrogen charging module, wherein the methanol storage bin is used for storing methanol; the daily methanol bin is communicated with the methanol storage bin, and a conveying pump is arranged between the daily methanol bin and the methanol storage bin for conveying methanol; the methanol supply module is communicated with the methanol daily bin, and the setting position of the methanol daily bin is at least 1200mm higher than that of the methanol supply module; the host module comprises a host valve group and a methanol host which are communicated with each other, the host valve group is communicated with the methanol supply module, and the methanol host is communicated with the methanol daily bin; the nitrogen charging module can charge nitrogen into the methanol supply module, the host valve group and the methanol host, so that the methanol remained in the methanol supply module, the host valve group and the methanol host is blown into the daily methanol bin; the methanol engine can ensure safe and reliable operation of the methanol engine when methanol is used; however, in the above-mentioned scheme, only through ordinary pipe connection between methyl alcohol storage bin, methyl alcohol daily use storehouse, methyl alcohol supply module, host computer module and the nitrogen charging module, pipeline welding seam and junction are revealed easily after long-time use, and methyl alcohol has inflammable and explosive nature and toxicity, and leak-proof measure is not enough, and the security is low, and simultaneously, it fails to integrate leak-proof and explosion-proof function on the basis of retrieving function, fails to compromise the security on the basis of retrieving function, for this reason, needs a kind of methyl alcohol fuel supply equipment and operation method based on boats and ships that compromise security and retrieving function.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a methanol fuel supply device based on a ship and an operation method thereof, and the methanol fuel supply device has the characteristics of taking safety and recovery function into consideration.
The aim of the invention can be achieved by the following technical scheme:
the methanol fuel supply equipment based on the ship comprises a methanol storage bin, a methanol daily-use bin, a recovery module and a main transportation module;
the main transportation module comprises double-wall pipes, the methanol storage bin, the methanol daily bin and the ship power system are connected through the double-wall pipes in sequence, any one of the double-wall pipes comprises an inner pipe and an outer pipe, and a buffer cavity is formed by a space between the outer pipe and the inner pipe;
the device comprises an inner pipe, a buffer cavity, an outer pipe, a sensor module, a control module and a recovery module, wherein the sensor module is electrically connected with the sensor module and comprises an air pressure sensor, the air pressure sensor respectively detects the air pressure inside the inner pipe, the buffer cavity and the outer pipe and uploads the air pressure outside the outer pipe to the control module, and the control module is electrically connected with the recovery module and controls the recovery module to recover the buffer cavity; and the control module controls the power of the recovery module according to the gas pressure data.
As a preferable technical scheme of the invention, the recovery module comprises an air filling component, a filter component and a plurality of return pipes, wherein the air filling component is respectively connected with a ship power system and buffer cavities in a plurality of pipelines, one ends of the return pipes are respectively connected with the filter component through electromagnetic valves, the other ends of the return pipes are respectively connected with the buffer cavities and the ship power system, the filter component is connected with a methanol daily tank and is used for separating methanol and gas, the air filling component is electrically connected with the control module and is used for purging the gas and liquid in the buffer cavities into the filter component through the return pipes, the air filling component enables the air pressure in the buffer cavities to be higher than standard atmospheric pressure, and the air filling component is used for purging the methanol in the ship power system into the recovery module after the ship power system is stopped.
As a preferable technical scheme of the invention, the sensor module further comprises a temperature sensor, the temperature sensor is used for detecting the temperatures of the buffer cavity and the return pipe and uploading the temperatures to the control module, a temperature threshold value is input in the control module in advance, temperature data are compared with the temperature threshold value, and when the comparison result shows that the temperature is greater than the threshold value, the control module enables the electromagnetic valve to be closed and closes the air filling assembly.
As a preferable technical scheme of the invention, the filtering component comprises a shell and a cavity in the shell, wherein the return pipe is connected with the upper part of the shell and stretches into the cavity, and the bottom of the shell is connected with the methanol daily bin through a pipe fitting.
As a preferable technical scheme of the invention, the filter assembly further comprises a gas washing module, the top of the filter assembly shell is connected with the input end of the gas washing module through a pipe fitting, and the output end of the gas washing module is connected with the gas filling assembly through a pipe fitting.
As a preferable technical scheme of the invention, the recovery module is connected with the methanol daily bin through a check valve.
As a preferable technical scheme of the invention, the system further comprises a standby transportation module, wherein the methanol storage bin, the methanol daily bin and the ship power system are connected through the standby transportation module, the standby transportation module is connected with the main transportation module in parallel, the standby transportation module comprises a double-wall pipe, and the methanol storage bin, the methanol daily bin and the ship power system are sequentially connected through the double-wall pipe of the standby transportation module.
As a preferable technical scheme of the invention, the methanol storage bin is connected with a filling port.
As a preferable technical scheme of the invention, the intelligent alarm system further comprises an alarm module, wherein the control module is electrically connected with the alarm module and controls the on-off of the alarm module.
The invention also provides an operation method of the methanol fuel supply device, which comprises the methanol fuel supply device based on the ship, and further comprises the following steps:
step one: the sensor module detects gas pressures a, b and c inside the inner tube, outside the buffer cavity and outside the outer tube in the fuel filling process and uploads the gas pressures a, b and c to the control module;
step two: the control module judges whether b is larger than a, if yes, the step six is executed, if no, the control module makes the aeration component operate with increased power;
step three: and the control module judges whether b is greater than c, if so, no additional action is executed, and if not, the control module closes the electromagnetic valve of the return pipe and closes the air filling assembly.
The beneficial effects of the invention are as follows:
through setting up back flow and gas filling subassembly to make back flow and gas filling subassembly all be connected with the daily storehouse of methyl alcohol, make leakage and residual fuel can carry out recycle, the setting up of the daily jar of methyl alcohol makes the fuel that probably contains the backward flow of impurity or miscellaneous gas need not to get into the comparatively complicated and higher methyl alcohol storage storehouse of requirement to storing, can not influence methyl alcohol to the continuous filling of boats and ships driving system when retrieving simultaneously;
through setting up air pressure sensor respectively including intraductal wall, buffering intracavity wall and outer tube outer wall to make control module according to the running power of three atmospheric pressure data adjustment recovery module, make recovery module increase the recovery dynamics when revealing comparatively seriously, and stop in the methanol fuel backward flow that will have the explosion risk flows back to recovery module when high explosion risk, compromise security and recovery function.
By arranging the temperature sensor, the methanol fuel with overhigh temperature is prevented from flowing into the methanol daily bin, the explosion risk in the methanol daily bin is improved, and the safety is further improved while the recovery function is taken into consideration;
by arranging the standby transport module, an operator can stop the main transport module for inspection on the premise of not cutting off the ship power system.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a block diagram of a control module circuit according to the present invention;
FIG. 4 is a schematic diagram of the steps of the present invention.
Description of main reference numerals:
in the figure: 1. a methanol storage bin; 2. a methanol daily-use bin; 3. a marine power system; 4. a double-walled tube; 41. a buffer chamber; 42. a return pipe; 5. a filter assembly; 51. an air filling assembly; 6. a gas washing module; 7. and a control module.
Detailed Description
In order to further describe the technical means and effects adopted by the invention for achieving the preset aim, the following detailed description is given below of the specific implementation, structure, characteristics and effects according to the invention with reference to the attached drawings and the preferred embodiment.
Referring to fig. 1-4, a vessel-based methanol fuel supply device includes a methanol storage tank 1 and a methanol storage tank 2, the methanol storage tank 2 is communicated with the methanol storage tank 1 through at least one fuel pump and is used for storing methanol, the methanol storage tank 2 is communicated with a vessel power system 3 through at least one fuel pump, in this embodiment, the bottom of the methanol storage tank 1 is provided with a fuel pump, meanwhile, the volume of the methanol storage tank 2 is smaller than that of the methanol storage tank 1, when in use, the methanol storage tank 1 is responsible for receiving and storing methanol fuel pumped from a filling station for a long time, however, the pollution degree of methanol combustion products is low, and the heat value of the methanol unit is low, so when the course is equal to that of other fuels, compared with other fuels, the methanol needs to be configured with a larger and deeper storage tank, the storage condition is more harsh and the device is more complex, therefore, the failure rate in the process of storing the methanol storage tank 1 or pumping out the fuel is higher, by arranging the methanol storage tank 2 smaller than the methanol storage tank 1 between the methanol storage tank 1 and the vessel power system 3, the methanol fuel can be continuously used in the normal use process, the methanol fuel can be continuously pumped into the methanol storage tank 1 through the methanol storage tank 2, and when the methanol storage tank 2 is continuously supplied to the vessel power system 3, and the failure system is continuously affected when the methanol storage tank 1 is supplied to the methanol storage tank 2.
In the process of mutual transfer of the methanol fuel between the methanol storage bin 1, the methanol daily bin 2 and the ship power system 3, as the methanol has certain corrosiveness, and after the transportation pipeline is used for a long time, the pipeline connection part or the welding seam is easy to leak, in order to reduce the influence of leakage on the surrounding environment after the occurrence, the methanol storage bin 1, the methanol daily bin 2 and the ship power system 3 are sequentially connected through a main transportation module, the main transportation module comprises two double-wall pipes 4 for three devices connected in series, each of the two double-wall pipes 4 comprises an inner pipe and an outer pipe, the inner pipe is used for transporting the methanol, the outer pipe is covered outside the inner pipe and is in sealing connection with the outer walls of the methanol storage bin 1, the methanol daily bin 2 or the ship power system 3 at two ends, at the moment, the space between the outer pipe and the inner pipe forms a buffer cavity 41, in the embodiment, the fuel pump in the methanol storage bin 1 pumps the fuel into the inner pipe for connecting the double-wall pipes 4 of the methanol storage bin 1 and the methanol daily bin 2, the fuel pump in the methanol power system 2 pumps the fuel into the double-wall pipes 4 for connecting the methanol daily bin 2 and the double-wall pipes 4, the double-wall pipes 4 are arranged at one end of the inner pipe and the two ends of the ship power system, and the leakage of the methanol power system is prevented from being caused by the leakage through the electromagnetic valve 1, and the inner pipe is arranged at one end of the two-side wall pipe and the inner pipe, the leakage pipeline is sealed by the inner pipe is arranged at the two ends, and the inner pipe is compared with the sealing joint of the inner pipe, and the leakage of the ship power system, and the leakage pipeline is prevented, and the leakage is caused by the leakage problem when the leakage is caused by the long-time, and the ship pipeline.
In the process of treating the leaked fuel by the buffer cavity 41, since the leaked methanol has corrosiveness and explosive property and the lower explosion limit of the methanol is 6%, in order to prevent accidents, the leaked methanol and oxygen need to be isolated as much as possible, and therefore, the invention further comprises a recovery module, the recovery module comprises an air filling assembly 51, the air filling assembly 51 is connected with the buffer cavities 41 in the plurality of double-walled pipes 4, the air filling assembly 51 continuously fills inert gas into the buffer cavities 41, the air filling assembly 51 simultaneously enables the air pressure in the buffer cavities 41 to be higher than the standard atmospheric pressure, in the embodiment, the inert gas is nitrogen, the air filling assembly 51 continuously blows nitrogen into the buffer cavities 41 of the two double-walled pipes 4, and the volume of the blown air enables the air pressure of the buffer cavities 41 to be higher than the standard atmospheric pressure, and by arranging the air filling assembly 51 and enabling the air filling assembly 51 to be in the buffer cavities 41, the contact between the leaked methanol fuel and the oxygen in the buffer cavities 41 is reduced, and the safety is further improved.
In the actual use, sometimes, the ship power system 3 needs to be shut down, the unused fuel is stopped in the ship host, and the residual liquid in the backflow can be produced in the methanol fuel supply process, the unused fuel, the residual liquid and the fuel in the leakage and buffer cavity 41 can cause corrosion and potential safety hazard to the pipeline when the fuel is remained, but the traditional treatment method generally uniformly sends the residual liquid and other fuels to the exhaust port and burns, the unnecessary combustion waste gas can not be produced when the part of fuel is recovered, the recovery module also comprises a return pipe 42, three return pipes 42 are arranged, the input ends of the three return pipes 42 are respectively connected with the buffer cavity 41 of the two double-wall pipes 4, and the ship power system 3, the output ends of the three return pipes 42 are connected with the methanol daily storehouse 2, and simultaneously, the gas filling component 51 is also connected with the ship power system 3 and inputs nitrogen into the buffer cavity 41 of the two double-wall pipes 4, and the ship power system 3 continuously fills nitrogen into the buffer cavity, the nitrogen gas with the fuel and the fuel, the methanol can continuously flow into the methanol storehouse 42 through the inlet ends of the return pipe 42, and the methanol storehouse 2 can continuously be recovered through the methanol storehouse 2, and the methanol can continuously flow into the methanol storehouse 2, and the methanol can be recovered through the methanol storehouse 2, and the methanol power system can continuously be recovered, the methanol power system can be recovered through the methanol storage storehouse 2, and the methanol power system can be continuously required to be recovered, and the methanol storage can be recovered by the methanol storage and the methanol storage storehouse 2.
In the above process of recovering methanol, because the outer tube of the double-wall tube 4 in the main transportation module has the probability of breakage, the atmospheric air with oxygen flows into the buffer cavity 41 and is mixed with the methanol fuel in the buffer cavity 41, at this time, the gas filling component 51 leaks the methanol fuel together with the oxygen into the daily tank of methanol, so that the fuel in the daily tank of methanol contacts with oxygen, and has the probability of explosion, and the safety is reduced, in order to enable the gas filling component 51 to adjust the gas filling and recovering schemes when different leakage occurs, the invention further comprises a sensor module and a control module, wherein the sensor module comprises air pressure sensors respectively arranged on the inner wall of the inner tube, the inner wall of the buffer cavity 41 and the outer wall of the outer tube, the control module is electrically connected with a plurality of air pressure sensors, in the embodiment, the control module at least comprises a control circuit for executing electric control, the three return pipes 42 are connected with the daily tank for methanol through an electromagnetic valve, the electromagnetic valves of the three return pipes 42 and the electromagnetic valve in the double-wall pipe 4 are controlled to be opened or closed by a control module, the control module is electrically connected with an air filling assembly 51, air pressure sensors respectively detect air pressure a, b and c inside the inner pipe, outside the buffer cavity 41 and outside the outer pipe and upload the air pressure a, b and c to the control module at a frequency of once per second, the control module compares the sizes of the air pressure a, b and c after receiving pressure data, controls the power of the recovery module and the on-off of the electromagnetic valve of the return pipe 42 according to the comparison result, and because the air filling assembly 51 makes the air pressure of the buffer cavity 41 higher than standard atmospheric pressure, when the inner pipe breaks to cause leakage, air with higher air pressure in the buffer cavity 41 flows into the inner pipe, the air pressure a of the inner pipe is close to the air pressure b of the buffer cavity 41 after a period of time, the comparison result of the control module shows a=b, meanwhile, in order to prevent random errors of the sensor, when the data of a and b received by the control module for five times continuously show a=b, serious leakage is proved to occur, at the moment, the control module increases the operation power of the air filling assembly 51, accelerates the process that nitrogen gas flows into the methanol daily bin 2 through the return pipe 42 together with liquid fuel, when the outer pipe breaks, air with higher air pressure in the buffer cavity 41 flows into the external environment through the broken part of the outer pipe, the air pressure b of the buffer cavity 41 is similar to the ambient air pressure c after a period of time, when the data of b and c received by the control module for five times continuously show b=c, the control module proves that air exchange exists between the buffer cavity 41 and the external environment, and external oxygen has a probability of entering into the buffer cavity 41, at the moment, the control module closes the electromagnetic valve in each return pipe 42, and simultaneously adjusts the power of the air filling assembly 51 to zero, namely closes the air filling assembly 51, and prevents recovered methanol possibly containing oxygen from flowing into the methanol daily bin 2 containing more methanol.
Because there is the equipment in the work around the double-wall pipe 4 of main transport module and the environment that boats and ships driving system 3 are located, therefore ambient temperature often is higher, when the temperature is higher, the fuel temperature in buffer chamber 41 and the boats and ships driving system 3 is higher simultaneously, the gas filling subassembly 51 is with the higher fuel recovery of temperature to the daily storehouse 2 of methyl alcohol, can promote the explosion risk in the daily storehouse 2 of methyl alcohol, the security is lower, in order to further improve the security, sensor module on the buffer chamber 41 inner wall still includes temperature sensor, be equipped with a temperature sensor in the back flow 42 that links to each other with boats and ships driving module simultaneously, two temperature sensor are used for detecting the real-time temperature in buffer chamber 41 and the temperature of boats and ships driving module backward flow methyl alcohol respectively and upload to control module, temperature threshold is input in advance in the control module, and compare two temperature data respectively with temperature threshold, when a comparison result shows that the temperature is greater than threshold value, control module makes the solenoid valve closure and closes the gas filling subassembly 51, prevent that the methanol fuel of temperature is too high from flowing into the daily explosion risk in the methyl alcohol storehouse 2 promotes wherein, further improvement security is retrieved to the security.
In the above recovery process, the gas filling component 51 fills the fuel to be recovered together with the introduced nitrogen gas into the methanol daily tank 2 through the return pipe 42, so that the impurity gas in the methanol daily tank 2 is increased after a long time, the methanol fuel supply of the methanol daily tank 2 to the ship power system 3 is affected, in order to perform gas-liquid separation on the liquid methanol fuel and the gaseous impurity gas before recovering the methanol, the recovery module further comprises the filter component 5, the filter component 5 is arranged between the electromagnetic valve of the return pipe 42 and the methanol daily tank 2, the filter component 5 is used for separating methanol and gas, in this embodiment, the filter component 5 is arranged above the methanol daily tank 2, the filter component 5 comprises a housing and a cavity inside the housing, the return pipe 42 is connected with the upper portion of the housing and extends into the cavity, the bottom of the housing is connected with the methanol daily tank 2 through a pipe, during recovery, the gas filling component 51 deposits the gas and the liquid in the buffer cavity 41 into the upper portion of the cavity through the return pipe 42, the liquid methanol fuel after entering the cavity is deposited at the bottom of the cavity, the gaseous impurity continuously floats at the upper portion of the cavity, and then the liquid methanol impurity flows into the lower portion of the cavity under the action of gravity, and the methanol impurity gas flows into the cavity under the action of the housing and is completely separated from the liquid methanol daily tank 2.
After the above-mentioned filter component 5 carries out the gas-liquid separation to methyl alcohol, because there is probability partial methyl alcohol steam in the gas that separates, therefore have probability to store it in filter component 5 for a long time and can cause the corruption to filter component 5's casing, methyl alcohol steam self has inflammable and explosive nature equally simultaneously, for carrying out further processing to the gas that separates, filter component 5 still includes gas washing module 6, filter component 5 casing top is through the input of pipe fitting connection gas washing module 6, gas outlet end and the lavage subassembly 51 of gas washing module 6 pass through the pipe fitting connection, after filter component 5 gas-liquid separation, the gas mixture that is in cavity top lets in gas washing module 6 along the pipe fitting of cavity upper portion, in this embodiment, gas washing module 6 is a gas washing bottle, its gas inlet end is connected with the cavity top, the gas outlet end is connected with lavage subassembly 51, contain distilled water in the gas module 6, after the blender lets in gas in the back is contacted with distilled water and dissolved in the gas bottle, the nitrogen gas that does not dissolve water flows back to the gas bottle from the gas outlet end of gas washing module 6 through the pipe fitting connection that sets up, the gas washing module 6 is realized simultaneously, the further safety of recycling of gas to the gas separation is realized to the gas washing module 6, the further recycling of gas has been accomplished to the function of separating and has been realized simultaneously.
In the above-mentioned in-process, when the methyl alcohol stores the filling of storehouse 1 to methyl alcohol daily storehouse 2 and retrieves the action and take place simultaneously, the circumstances that the fuel in the daily storehouse 2 of probability emergence methyl alcohol flows backward into recovery subassembly prevents to retrieve the action, in order to avoid flowing backward, recovery module passes through check valve with the daily storehouse 2 of methyl alcohol and is connected, specifically, the check valve sets up between filter unit 5 and the daily storehouse 2 of methyl alcohol, the setting direction of check valve is for only allowing filter unit 5 to carry fuel to the daily storehouse 2 of methyl alcohol, during the use, when the trend that takes place the daily storehouse 2 of methyl alcohol to take place to flow backward to filter unit 5 takes place, the back flow fuel roof pressure check valve makes the check valve closed, the circumstances that avoids flowing backward take place.
Because of the corrosiveness of the methanol to the metal, the recovery module can not completely purge the methanol in the buffer cavity 41 into the recovery module, the unblown methanol contacts with the structure of the double-wall pipe 4 for a long time and corrodes, the occurrence rate of leakage accidents is improved, the main transport module is checked and is required to be stopped, the main transport module is checked while the fuel supply of the ship power system 3 is not cut off, the invention further comprises a standby transport module, the methanol storage bin 1, the methanol daily bin 2 and the ship power system 3 are connected through the standby transport module, the standby transport module is connected with the main transport module in parallel, the standby transport module also comprises a plurality of double-wall pipes 4, electromagnetic valves are arranged at the upstream and the downstream of the standby transport module, the electromagnetic valve is electrically connected with the control module and is opened or closed under the control of the control module, in this embodiment, the electromagnetic valve is arranged at the upstream of the inner pipe in the double-wall pipe 4 connecting the methanol storage bin 1 and the methanol daily bin 2 in the standby transportation module, and the electromagnetic valve is arranged at the downstream of the inner pipe in the double-wall pipe 4 connecting the methanol daily bin 2 and the ship power system 3, similarly to the main transportation module, the buffer cavity 41 in the standby transportation module is connected with the air filling module 51 and is connected with the filtering module 5 through the return pipe 42, the air filling module 51 sweeps the leakage fuel in the buffer cavity 41 into the filtering module 5, when the transportation module is used for more than a certain time, the control module closes the electromagnetic valve of the inner pipe in the transportation module and opens the electromagnetic valve in the standby transportation module, and at the moment, the fuel is transferred from the methanol storage bin 1 to the methanol daily bin 2 through the standby transportation module, and transferred from the methanol day tank 2 to the ship power system 3.
For the filling of convenient to use after a period to methyl alcohol storage storehouse 1, methyl alcohol storage storehouse 1 is connected with a filler, and the filler sets up in the boats and ships middle part, when needs are filled, sets up in the filler at boats and ships middle part and can be applicable to various wharf sizes and wharf facilities better, has made things convenient for the filling of methyl alcohol fuel.
In order to further improve the safety, the control module is connected with an alarm module and controls the on-off of the alarm module, and when the data of a and b received by the control module for five times continuously indicate a=b, or the data of b and c received by the control module for five times continuously indicate b=c, the control module controls the air filling assembly 51 and simultaneously starts the alarm module to remind an operator of leakage.
The invention also provides an operation method of the methanol fuel supply equipment based on the ship, which comprises the following steps:
step one: the sensor module detects the gas pressures a, b and c inside the inner tube, outside the buffer cavity 41 and the outer tube during the fuel filling process and uploads the gas pressures to the control module;
step two: the control module judges whether b is larger than a, if yes, the step six is executed, if no, the control module makes the air filling assembly 51 operate with increased power;
step three: the control module determines whether b is greater than c, if so, no additional action is performed, and if not, the control module closes the solenoid valve of the return line 42 and closes the air-filling assembly 51.
The working principle and the using flow of the invention are as follows:
when the system is used, the methanol storage bin 1 is responsible for receiving and storing methanol fuel pumped from the filling station for a long time, the methanol storage bin 1 pumps the fuel into the methanol daily bin 2 through the double-wall pipe 4 of the main transportation module or the standby transportation module, the methanol daily bin 2 supplies fuel to the ship power system 3 through the double-wall pipe 4 of the main transportation module or the standby transportation module, and when the external pump function of the methanol storage bin 1 fails, the ship power system 3 can supply fuel through the methanol daily bin 2;
in the process, the gas filling assembly 51 continuously fills nitrogen into the buffer cavities 41 of the two double-wall pipes 4 and the ship power system 3, the nitrogen is continuously flowed into one end of the return pipe 42 along with liquid fuel, and flows into the upper part of the cavity of the filtering assembly 5 through the return pipe 42, liquid methanol fuel is deposited at the bottom of the cavity after entering the cavity, gaseous impurities continuously float on the upper part of the cavity, then liquid methanol at the bottom of the cavity flows into the methanol daily bin 2 under the action of gravity through a pipe fitting below the shell, mixed gas above the cavity is introduced into the gas washing bottle along the pipe fitting at the upper part of the cavity, the methanol in the gas contacts with distilled water in the gas washing bottle and is dissolved in the distilled water, and the water-insoluble nitrogen flows back into the gas filling assembly 51 from the gas outlet end of the gas washing bottle;
in the recovery process, the air pressure sensors respectively detect the air pressures a, b and c inside the inner pipe, the buffer cavity 41 and outside the outer pipe and upload the air pressures a, b and c to the control module at a frequency of once per second, the control module compares the sizes of a, b and c after receiving the pressure data, when the control module continuously receives the data of a and b for five times, a=b, serious leakage is proved to occur, and at the moment, the control module increases the operation power of the aeration assembly 51, and accelerates the process of flowing nitrogen into the methanol daily bin 2 through the return pipe 42 together with the acceleration of liquid fuel; when the data of b and c received by the control module for five times continuously show b=c, it is proved that the buffer cavity 41 and the outside have gas exchange, and the outside oxygen enters the buffer cavity 41 with probability, at this time, the control module closes the electromagnetic valve in each return pipe 42, and simultaneously closes the air filling assembly 51, so as to prevent the recovered methanol possibly containing oxygen from flowing into the methanol daily use bin 2 containing more methanol.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (10)
1. A marine vessel based methanol fuel supply apparatus, characterized in that: the system comprises a methanol storage bin, a methanol daily bin, a recovery module and a main transportation module;
the main transportation module comprises double-wall pipes, the methanol storage bin, the methanol daily bin and the ship power system are connected through the double-wall pipes in sequence, any one of the double-wall pipes comprises an inner pipe and an outer pipe, and a buffer cavity is formed by a space between the outer pipe and the inner pipe;
the device comprises an inner pipe, a buffer cavity, an outer pipe, a sensor module, a control module and a recovery module, wherein the sensor module is electrically connected with the sensor module and comprises an air pressure sensor, the air pressure sensor respectively detects the air pressure inside the inner pipe, the buffer cavity and the outer pipe and uploads the air pressure outside the outer pipe to the control module, and the control module is electrically connected with the recovery module and controls the recovery module to recover the buffer cavity; and the control module controls the power of the recovery module according to the gas pressure data.
2. A vessel-based methanol fuel supply apparatus according to claim 1, wherein: the recovery module comprises an air filling assembly, a filtering assembly and a plurality of return pipes, wherein the air filling assembly is respectively connected with a ship power system and buffer cavities in a plurality of pipelines, one end of each return pipe is connected with the filtering assembly through an electromagnetic valve, the other end of each return pipe is respectively connected with the buffer cavities and the ship power system, the filtering assembly is connected with a daily methanol tank and is used for separating methanol and gas, the air filling assembly is electrically connected with the control module and is used for blowing the gas and liquid in the buffer cavities into the filtering assembly through the return pipes, the air filling assembly enables the air pressure in the buffer cavities to be higher than standard atmospheric pressure, and the air filling assembly is used for blowing the methanol in the ship power system into the recovery module after the ship power system is stopped.
3. A vessel-based methanol fuel supply apparatus according to claim 1, wherein: the sensor module further comprises a temperature sensor, the temperature sensor is used for detecting the temperatures of the buffer cavity and the return pipe and uploading the temperatures to the control module, a temperature threshold value is input in the control module in advance, temperature data are compared with the temperature threshold value, and when the comparison result shows that the temperature is greater than the threshold value, the control module enables the electromagnetic valve to be closed and closes the air filling assembly.
4. A vessel-based methanol fuel supply apparatus according to claim 1, wherein: the filtering component comprises a shell and a cavity in the shell, the return pipe is connected with the upper part of the shell and stretches into the cavity, and the bottom of the shell is connected with the methanol daily bin through a pipe fitting.
5. A vessel-based methanol fuel supply apparatus as in claim 3, wherein: the filter assembly further comprises a gas washing module, the top of the filter assembly shell is connected with the input end of the gas washing module through a pipe fitting, and the output end of the gas washing module is connected with the gas filling assembly through a pipe fitting.
6. A vessel-based methanol fuel supply apparatus according to claim 1, wherein: the recovery module is connected with the methanol daily bin through a check valve.
7. A vessel-based methanol fuel supply apparatus according to claim 1, wherein: the system is characterized by further comprising a standby transportation module, wherein the standby transportation module comprises a double-wall pipe, the methanol storage bin, the methanol daily bin and the ship power system are sequentially connected through the double-wall pipe of the standby transportation module, and the standby transportation module is connected with the main transportation module in parallel.
8. A vessel-based methanol fuel supply apparatus according to claim 1, wherein: the methanol storage bin is connected with a filling port.
9. A vessel-based methanol fuel supply apparatus according to claim 1, wherein: the alarm system also comprises an alarm module, wherein the control module is electrically connected with the alarm module and controls the on-off of the alarm module.
10. A method of operating a marine vessel based methanol fuel supply apparatus, characterized by: a methanol fuel supply apparatus comprising the ship-based methanol fuel supply apparatus according to any one of claims 1 to 9, further comprising the steps of:
step one: the sensor module detects gas pressures a, b and c inside the inner tube, outside the buffer cavity and outside the outer tube in the fuel filling process and uploads the gas pressures a, b and c to the control module;
step two: the control module judges whether b is larger than a, if so, the step six is executed, if not, the control module enables the air filling assembly to operate with increased power;
step three: and the control module judges whether b is greater than c, if so, no additional action is executed, and if not, the control module closes the electromagnetic valve of the return pipe and closes the air filling assembly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310684321.7A CN116443232A (en) | 2023-06-12 | 2023-06-12 | Methanol fuel supply equipment based on ship and operation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310684321.7A CN116443232A (en) | 2023-06-12 | 2023-06-12 | Methanol fuel supply equipment based on ship and operation method |
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| CN116443232A true CN116443232A (en) | 2023-07-18 |
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| CN202310684321.7A Pending CN116443232A (en) | 2023-06-12 | 2023-06-12 | Methanol fuel supply equipment based on ship and operation method |
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| WO2015040267A1 (en) * | 2013-09-20 | 2015-03-26 | Wärtsilä Finland Oy | Integrated fuel storage system and gas valve unit |
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