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CN115628398B - Main shielding leakage flow guiding system and method for B-type containment system - Google Patents

Main shielding leakage flow guiding system and method for B-type containment system Download PDF

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Publication number
CN115628398B
CN115628398B CN202211152581.1A CN202211152581A CN115628398B CN 115628398 B CN115628398 B CN 115628398B CN 202211152581 A CN202211152581 A CN 202211152581A CN 115628398 B CN115628398 B CN 115628398B
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CN
China
Prior art keywords
plunger
device body
magnetic disc
end cover
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202211152581.1A
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Chinese (zh)
Other versions
CN115628398A (en
Inventor
刘恒
徐岸南
段斌
宋忠兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hudong Zhonghua Shipbuilding Group Co Ltd
Original Assignee
Hudong Zhonghua Shipbuilding Group Co Ltd
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Priority to CN202211152581.1A priority Critical patent/CN115628398B/en
Publication of CN115628398A publication Critical patent/CN115628398A/en
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Publication of CN115628398B publication Critical patent/CN115628398B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
    • 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
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/06—Closures, e.g. cap, breakable member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0629—Two walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/0126—One vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0311—Closure means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/037—Handling leaked fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/038—Detecting leaked fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses a main shielding leakage flow guiding system for a B-type enclosure system, which comprises a temperature sensing release device and a receiving device, wherein the temperature sensing release device is arranged at an outlet of an eduction tube and comprises a device body, a magnetic disc, a plunger, a spring, the eduction tube, an end cover and a reset bolt; the device comprises a device body, a magnetic disc, a plunger, a spring, an end cover, a magnetic disc, a spring, a magnetic disc, a plunger, a spring and an end cover, wherein the device body is connected with the outlet of the delivery tube through the inlet; the bearing device is arranged below the outlet of the eduction tube and comprises a bearing disc and a bearing base. According to the invention, the temperature sensing release device and the bearing device are arranged at the outlet of the delivery pipe, so that leaked liquefied gas is delivered, the damage of low-temperature liquefied gas to the hull structure is avoided, and the sailing safety of the ship is improved.

Description

Main shielding leakage flow guiding system and method for B-type containment system
Technical Field
The invention belongs to the technical field of ship construction, and particularly relates to a main shielding leakage diversion system and method for a B-type containment system.
Background
The liquefied gas ship is mainly used for transporting low-temperature cargoes such as liquefied petroleum gas, liquefied natural gas and the like, and the liquefied gas is loaded in a ship containment system. According to definition of bulk transportation liquefied gas ship structure and equipment specification, the containment system for bearing low-temperature liquefied gas can be mainly divided into a film type, an independent type, an integral type and a semi-film type, and the liquefied gas ship in the shipping market is mainly provided with the film type and the independent type containment system. The independent enclosure system with the self-supporting structure can be further divided into an A-type enclosure system, a B-type enclosure system and a C-type enclosure system. The requirements of the three enclosure systems on the secondary screen wall are different, and the A-type enclosure system is a complete secondary screen wall; the B-type enclosure system is a partial sub-shield; the C-shaped enclosure system does not need to be provided with a secondary screen.
The B-type enclosure system comprises two cabin types of MOSS type (spherical tank shape) and prismatic type; according to IGC requirements, the B-type enclosure system needs to be provided with partial secondary shielding, and when the main screen wall leaks, the leaked liquefied gas needs to be contained; if the ultralow-temperature LNG leaks onto the steel plate of the ship body structure, the steel plate is embrittled, seawater enters the cargo hold, even the serious consequence of ship sinking is that how to lead out the liquefied gas leaked from the main screen wall to partial secondary shielding is an important guarantee for the safe operation of the B-type containment system; in the prior art, the flange is arranged at the outlet of the delivery pipe, the foil paper is arranged in the flange to seal the delivery pipe, and the foil paper is broken and cannot be reused after the sealed container leaks.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a main shielding leakage flow guiding system and method for a B-type enclosure system.
In order to achieve the above object, the present invention provides the following technical solutions:
The system comprises a temperature sensing release device and a bearing device, wherein the temperature sensing release device is arranged at an outlet of the eduction tube, and comprises a device body, a magnetic disc, a plunger, a spring, the eduction tube, an end cover and a reset bolt; the inlet of the device body is connected with the outlet of the delivery pipe, the inner side of the inlet of the device body is connected with one side of the magnetic disc, the other side of the magnetic disc is magnetically connected with one side of the plunger, the other side of the plunger is connected with one end of the spring, the other end of the spring is connected with the end cover, the spring drives the plunger to move in the device body, the end cover is arranged at one end of the outlet of the device body, the reset bolt is connected with the end cover, and the eduction tube is arranged on the side surface of the lower end of the device body; the bearing device is arranged below the outlet of the eduction tube and comprises a bearing disc and a bearing base, the bearing disc is connected with the bearing base, and the bearing base is arranged on the hull mechanism.
Above-mentioned magnetism disc is whole to be the cylindric, it has circular through-hole to open at magnetism disc middle part, the circular through-hole of magnetism disc with the delivery tube intercommunication, magnetism disc outside terminal surface with device body import inboard passes through fixing bolt to be connected, magnetism disc outside terminal surface with set up the sealing washer between the device body import inboard.
Above-mentioned whole hollow cylinder of device body, device body both sides terminal surface sets up device body import and device body export respectively, device body import aperture with the delivery tube aperture is the same, device body export aperture is greater than device body import aperture, device body export terminal surface is provided with the bolt hole.
The plunger is integrally convex, the plunger moves in the device body, the plunger comprises a first plunger and a second plunger, the first plunger is installed in the middle of the second plunger, the first plunger and the second plunger are integrally formed, the diameter of the first plunger is smaller than that of the second plunger, and the diameter of the first plunger is larger than that of a circular through hole in the magnetic disc; the first plunger end face is magnetically connected with the magnetic disc, a sealing ring is arranged on the first plunger end face connected with the magnetic disc, the second plunger side face is slidably connected with the inner side of the device body, and a sealing ring is arranged on the second plunger side face connected with the inner side of the device body; the spring drives the plunger to move towards the end cover.
The whole end cover is cylindrical, a bolt hole is formed in the outer end face of the end cover, the end cover is fixed with the outlet end face of the device body through a bolt, a threaded hole is formed in the middle of the end cover, a reset bolt is connected through the threaded hole in the middle of the end cover, and the reset bolt is screwed into or out of the device body through the threaded hole in the middle of the end cover; when the reset bolt is screwed into the device body, the reset bolt pushes the plunger to move towards the magnetic disc.
The whole L-shaped eduction tube, the eduction tube is installed the device body side, the eduction tube with the device body intercommunication, set up temperature sensor on the pipeline of eduction tube.
The tray is arranged below the outlet of the delivery pipe, the tray receives liquefied gas flowing out of the delivery pipe, and a heat insulation gasket is arranged between the tray and the receiving base.
A method for leakage diversion of a main shield of a B-type enclosure system specifically comprises the following steps:
the method comprises the steps that a main shielding leakage diversion system for a B-type enclosure system is prepared, the system comprises a temperature sensing release device and a receiving device, the temperature sensing release device is arranged at an outlet of an eduction tube, and the temperature sensing release device comprises a device body, a magnetic disc, a plunger, a spring, the eduction tube, an end cover and a reset bolt; the inlet of the device body is connected with the outlet of the delivery pipe, the inner side of the inlet of the device body is connected with one side of the magnetic disc, the other side of the magnetic disc is magnetically connected with one side of the plunger, the other side of the plunger is connected with one end of the spring, the other end of the spring is connected with the end cover, the spring drives the plunger to move in the device body, the end cover is arranged at one end of the outlet of the device body, the reset bolt is connected with the end cover, and the eduction tube is arranged on the side surface of the lower end of the device body; the bearing device is arranged below the outlet of the eduction tube and comprises a bearing disc and a bearing base, the bearing disc is connected with the bearing base, and the bearing base is arranged on the hull mechanism;
The second step, the temperature sensing release devices are respectively arranged at the outlet of each delivery pipe, and the bearing devices are arranged below the temperature sensing release devices;
Thirdly, when a closed container in the B-type enclosure system leaks, the liquefied gas in the closed container leaks into the insulating annular cavity, and the liquefied gas leaked into the insulating annular cavity enters the temperature sensing release device through the delivery pipe;
Fourthly, when the leaked liquefied gas in the closed container reaches the inlet of the device body through the delivery pipe, the liquefied gas contacts with the magnetic disc and reduces the temperature of the magnetic disc to enable the magnetism of the magnetic disc to decline, the magnetic connection between the magnetic disc and the plunger is weakened to enable the magnetic disc to be separated from the plunger, and the spring drives the plunger to move towards the end cover;
Fifthly, when the spring drives the plunger to move towards the direction of the end cover and stops, a closed cavity formed by the magnetic disc and the plunger is communicated with the eduction tube, and liquefied gas in the eduction tube flows into the device body and flows out to the bearing disc through the eduction tube; the liquefied gas flowing onto the receiving tray evaporates into the air;
sixthly, after liquefied gas flows through the eduction tube, a temperature sensor on the eduction tube detects that the temperature of the eduction tube is reduced, and the temperature sensor feeds back a detection signal to a ship detection system and sends out an alarm signal;
Seventhly, removing and maintaining the leakage condition of the closed container according to an alarm signal, after the maintenance of the closed container is completed, after the temperature of the eduction tube detected by the temperature sensor is recovered to be normal, pushing the plunger to move towards the magnetic disc by screwing the reset bolt, and simultaneously raising the temperature in the device body, wherein the magnetic disc magnetically recovers to adsorb the plunger, and the eduction tube outlet is closed; and after the magnetic disc adsorbs the plunger, screwing the reset bolt to move to an initial position towards the direction of the end cover, and completing the main shielding leakage diversion work of the B-type enclosure system.
When the temperature of the magnetic disc in the fourth step is reduced to-40 ℃, the magnetism of the magnetic disc is weakened, and the magnetic disc is separated from the plunger; when the temperature of the magnetic disc rises to above-40 ℃, the magnetic force of the magnetic disc is recovered, and when the magnetic disc is in contact with the plunger, the plunger is adsorbed by the magnetic disc.
Based on the technical scheme, the main shielding leakage diversion system and the main shielding leakage diversion method for the B-type enclosure system have the following technical advantages through practical application:
1. According to the main shielding leakage flow guiding system for the B-type enclosure system, the temperature sensing release device is arranged on the flow guiding pipe, the flow guiding pipe is closed when the closed container is not leaked, liquefied gas is led out when the closed container is leaked, the liquefied gas is prevented from accumulating in the insulating annular cavity, the pressure rise of the insulating annular cavity caused by evaporation of the liquefied gas is avoided, and the integrity of the heat insulation layer is ensured.
2. According to the main shielding leakage flow guiding system for the B-type containment system, the bearing device is arranged below the temperature sensing release device, and when liquefied gas in the temperature sensing release device flows into the bearing device through the eduction tube, damage of low-temperature liquefied gas to a ship body structure is avoided, and ship navigation safety is improved.
3. According to the main shielding leakage flow guiding system for the B-type enclosure system, the magnetic disc is used for adsorbing the plunger to seal the delivery pipe, when liquefied gas flows out through the delivery pipe, the liquefied gas enables magnetism of the magnetic disc to fade to lead out the liquefied gas, and after the liquefied gas is led out, the plunger is reset through the reset bolt to enable the temperature sensing release device to be reused, so that the production cost is reduced.
Drawings
FIG. 1 is a block diagram of a primary shield leakage diversion system for use in a primary shield leakage diversion system of a B-type containment system in accordance with the present invention.
FIG. 2 is a block diagram of a temperature sensing release device for use in a B-type containment system primary shield leakage diversion system in accordance with the present invention.
FIG. 3 is a diagram showing the closed state of a plunger of a temperature sensing release device used in a main shielding leakage diversion system of a B-type enclosure system.
FIG. 4 is a diagram showing the structure of the temperature sensing release device plunger on state for the main shielding leakage diversion system of the B-type enclosure system.
FIG. 5 is a schematic diagram of a temperature sensitive release device plunger reset for use in a B-type containment system primary shield leakage diversion system of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by way of specific examples shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
The invention belongs to a main shielding leakage flow guiding system for a B-type enclosure system, wherein a closed container 1 is arranged in the B-type enclosure system, the B-type enclosure system comprises an insulating layer 2 and a delivery pipe 3, the insulating layer 2 is arranged outside the closed container 1, and an insulating annular cavity 5 is arranged between the closed container 1 and the insulating layer 2.
As shown in fig. 1-5, a main shield leakage diversion system for a B-type enclosure system comprises a temperature sensing release device 4 and a receiving device, wherein the temperature sensing release device 4 is arranged at an outlet of the eduction tube 3, and the temperature sensing release device 4 comprises a device body 41, a magnetic disc 42, a plunger 43, a spring 44, an eduction tube 48, an end cover 45 and a reset bolt 47; the inlet of the device body 41 is connected with the outlet of the delivery pipe 3, the inner side of the inlet of the device body 41 is connected with one side of the magnetic disc 42, the other side of the magnetic disc 42 is magnetically connected with one side of the plunger 43, the other side of the plunger 43 is connected with one end of the spring 44, the other end of the spring 44 is connected with the end cover 45, the spring 44 drives the plunger 43 to move in the device body 41, the end cover 45 is arranged at one end of the outlet of the device body 41, the reset bolt 47 is connected with the end cover 45, and the delivery pipe 48 is arranged at the side surface of the lower end of the device body 41; the bearing device is arranged below the outlet of the eduction tube 48 and comprises a bearing disc 6 and a bearing base 8, the bearing disc 6 is connected with the bearing base 8, and the bearing base 8 is arranged on a hull mechanism; by arranging the temperature sensing release device 4 on the delivery pipe 3, the delivery pipe 3 is closed when the closed container 1 is not leaked, liquefied gas is delivered when the closed container 1 is leaked, the liquefied gas is prevented from accumulating in the insulating annular cavity 5, the pressure rise of the insulating annular cavity 5 caused by the evaporation of the liquefied gas is avoided, and the integrity of the heat insulation layer 2 is ensured.
The whole magnetic disc 42 is cylindrical, a circular through hole is formed in the middle of the magnetic disc 42, the circular through hole of the magnetic disc 42 is communicated with the delivery tube 3, the outer end face of the magnetic disc 42 is connected with the inner side of the inlet of the device body 41 through a fixing bolt, and a sealing ring 46 is arranged between the outer end face of the magnetic disc 42 and the inner side of the inlet of the device body 41.
The whole hollow cylinder of above-mentioned device body 41, device body 41 both sides terminal surface sets up device body 41 import and device body 41 export respectively, device body 41 import aperture with the delivery tube 3 aperture is the same, device body 41 export aperture is greater than device body 41 import aperture, device body 41 export terminal surface is provided with the bolt hole.
The plunger 43 is in a convex shape as a whole, the plunger 43 moves in the device body 41, the plunger 43 comprises a first plunger 431 and a second plunger 432, the first plunger 431 is installed in the middle of the second plunger 432, the first plunger 431 and the second plunger 432 are integrally formed, the diameter of the first plunger 431 is smaller than that of the second plunger 432, and the diameter of the first plunger 431 is larger than that of a circular through hole in the magnetic disc 42; the end face of the first plunger 431 is magnetically connected with the magnetic disc 42, a sealing ring 46 is arranged on the end face of the first plunger 431 connected with the magnetic disc 42, the side face of the second plunger 432 is slidably connected with the inner side of the device body 41, and a sealing ring 46 is arranged on the side face of the second plunger 432 connected with the inner side of the device body 41; the spring 44 drives the plunger 43 to move towards the end cover 45; the seal ring 46 is made of a low temperature resistant material, and the seal ring 46 is arranged on the end surface of the plunger 43, which is connected with the device body 41 and the magnetic disc 42, so that the sealing effect of the device body 41 is improved, and the leakage of liquefied gas is prevented.
The whole end cover 45 is cylindrical, a bolt hole is formed in the outer end face of the end cover 45, the end cover 45 is fixed with the outlet end face of the device body 41 through a bolt, a threaded hole is formed in the middle of the end cover 45, a reset bolt 47 is connected through the threaded hole in the middle of the end cover 45, and the reset bolt 47 is screwed into or out of the device body 41 through the threaded hole in the middle of the end cover 45; when the reset bolt 47 is screwed into the device body 41, the reset bolt 47 pushes the plunger 43 to move towards the magnetic disc 42; after the liquefied gas flows out through the delivery pipe 3, the liquefied gas leads out the liquefied gas by making the magnetism of the magnetic disc 42 subside, and after the liquefied gas is led out, the plunger 43 is reset through the reset bolt 47, so that the temperature sensing release device 4 can be reused, and the production cost is reduced.
The above-mentioned eduction tube 48 takes the form of L integrally, the said eduction tube 48 is installed in the side of said apparatus body 41, the said eduction tube 48 communicates with said apparatus body 41, set up the temperature pick-up 49 on the pipeline of the said eduction tube 48; the temperature sensor 49 is arranged on the pipeline of the eduction tube 48, so that the leakage condition of the closed container 1 can be conveniently detected, and the use safety of the closed container 1 is improved.
The receiving tray 6 is installed below the outlet of the delivery pipe 3, the receiving tray 6 receives the liquefied gas flowing out of the delivery pipe 3, and a heat insulation pad 7 is arranged between the receiving tray 6 and the receiving base 8; by arranging the bearing device below the temperature sensing release device 4, when liquefied gas in the temperature sensing release device 4 flows into the bearing device through the eduction tube 48, the damage of low-temperature liquefied gas to the hull structure is avoided, and the sailing safety of the ship is improved; the heat insulation pad 7 arranged between the bearing plate 6 and the bearing base 8 prevents the liquefied gas in the bearing plate 6 from being transferred to the bearing base 8 at low temperature to damage other structures of the ship body.
A method for leakage diversion of a main shield of a B-type enclosure system specifically comprises the following steps:
Firstly, preparing a main shielding leakage diversion system for a B-type enclosure system, wherein the system comprises a temperature sensing release device 4 and a receiving device, the temperature sensing release device 4 is arranged at an outlet of the eduction tube 3, and the temperature sensing release device 4 comprises a device body 41, a magnetic disc 42, a plunger 43, a spring 44, an eduction tube 48, an end cover 45 and a reset bolt 47; the inlet of the device body 41 is connected with the outlet of the delivery pipe 3, the inner side of the inlet of the device body 41 is connected with one side of the magnetic disc 42, the other side of the magnetic disc 42 is magnetically connected with one side of the plunger 43, the other side of the plunger 43 is connected with one end of the spring 44, the other end of the spring 44 is connected with the end cover 45, the spring 44 drives the plunger 43 to move in the device body 41, the end cover 45 is arranged at one end of the outlet of the device body 41, the reset bolt 47 is connected with the end cover 45, and the delivery pipe 48 is arranged at the side surface of the lower end of the device body 41; the bearing device is arranged below the outlet of the eduction tube 48 and comprises a bearing disc 6 and a bearing base 8, the bearing disc 6 is connected with the bearing base 8, and the bearing base 8 is arranged on a hull mechanism;
secondly, respectively installing a temperature-sensing release device 4 at the outlet of each delivery pipe 3, and installing the bearing device below the temperature-sensing release device 4;
Thirdly, when the airtight container 1 in the B-type enclosure system leaks, the liquefied gas in the airtight container 1 leaks into the insulating annular cavity 5, and the liquefied gas leaked into the insulating annular cavity 5 enters the temperature sensing release device 4 through the delivery pipe 3;
Fourth, when the liquefied gas leaked from the closed container 1 reaches the inlet of the device body 41 through the delivery pipe 3, the liquefied gas contacts with the magnetic disc 42 and reduces the temperature of the magnetic disc 42 so as to degrade the magnetism of the magnetic disc 42, the magnetic connection between the magnetic disc 42 and the plunger 43 is weakened so as to separate the magnetic disc 42 from the plunger 43, and the spring 44 drives the plunger 43 to move towards the end cover 45;
Fifthly, when the spring 44 drives the plunger 43 to stop moving towards the end cover 45, the magnetic disc 42 and the closed cavity formed by the plunger 43 are communicated with the eduction tube 48, and the liquefied gas in the eduction tube 3 flows into the device body 41 and flows out to the receiving disc 6 through the eduction tube 48; the liquefied gas flowing onto the tray 6 evaporates into the air;
Sixthly, when the liquefied gas flows through the eduction tube 48, a temperature sensor 49 on the eduction tube 48 detects that the temperature of the eduction tube 48 is reduced, and the temperature sensor 49 feeds back a detection signal to a ship detection system and sends out an alarm signal;
seventh, the operation eliminates and maintains the leakage condition of the closed container 1 according to the alarm signal, after the maintenance of the closed container 1 is completed, the temperature of the eduction tube 48 detected by the temperature sensor 49 is recovered to be normal, the plunger 43 is pushed to move towards the magnetic disc 42 by screwing the reset bolt 47, meanwhile, the temperature in the device body 41 rises, the magnetic disc 42 magnetically recovers to absorb the plunger 43, and the outlet of the eduction tube 3 is closed; after the magnetic disc 42 adsorbs the plunger 43, the reset bolt 47 is screwed again to move to the initial position towards the end cover 45, so as to complete the main shielding leakage diversion work of the B-type enclosure system.
When the temperature of the magnetic disk 42 in the fourth step is lowered to-40 ℃, the magnetism of the magnetic disk 42 is weakened, and the magnetic disk 42 is separated from the plunger 43; when the temperature of the magnetic disk 42 is raised to-40 ℃ or higher, the magnetic force of the magnetic disk 42 is recovered, and when the magnetic disk 42 contacts the plunger 43, the magnetic disk 42 attracts the plunger 43.
The B-type containment system main shielding leakage flow guiding system is suitable for the B-type containment system arranged in a ship and a floating device, and is also suitable for the leakage flow guiding requirement of an air storage tank arranged on land.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that; modifications may be made to the specific embodiments of the invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.

Claims (7)

1. The utility model provides a be used for B type enclosure system owner to shield leakage water conservancy diversion system, sets up airtight container (1) in the B type enclosure system, B type enclosure system includes insulating layer (2) and delivery tube (3), insulating layer (2) set up airtight container (1) outside, airtight container (1) with set up insulating ring chamber (5) between insulating layer (2), characterized in that, this system includes temperature sensing release device (4) and adapting unit, temperature sensing release device (4) are installed the delivery tube (3) export, temperature sensing release device (4) include device body (41), magnetic disc (42), plunger (43), spring (44), delivery tube (48), end cover (45) and reset bolt (47); the device comprises a device body (41), an outlet of a delivery pipe (3), the inner side of the inlet of the device body (41) is connected with one side of a magnetic disc (42), the other side of the magnetic disc (42) is magnetically connected with one side of a plunger (43), the other side of the plunger (43) is connected with one end of a spring (44), the other end of the spring (44) is connected with an end cover (45), the spring (44) drives the plunger (43) to move in the device body (41), the end cover (45) is mounted at one end of the outlet of the device body (41), a reset bolt (47) is connected with the end cover (45), and the delivery pipe (48) is mounted at the side surface of the lower end of the device body (41); the bearing device is arranged below the outlet of the eduction tube (48), the bearing device comprises a bearing disc (6) and a bearing base (8), the bearing disc (6) is connected with the bearing base (8), and the bearing base (8) is arranged on the hull mechanism;
The plunger (43) is integrally convex, the plunger (43) moves in the device body (41), the plunger (43) comprises a first plunger (431) and a second plunger (432), the first plunger (431) is installed in the middle of the second plunger (432), the first plunger (431) and the second plunger (432) are integrally formed, the diameter of the first plunger (431) is smaller than that of the second plunger (432), and the diameter of the first plunger (431) is larger than that of a circular through hole in the magnetic disc (42); the end face of the first plunger (431) is magnetically connected with the magnetic disc (42), a sealing ring (46) is arranged on the end face of the first plunger (431) connected with the magnetic disc (42), the side face of the second plunger (432) is slidably connected with the inner side of the device body (41), and the sealing ring (46) is arranged on the side face of the second plunger (432) connected with the inner side of the device body (41); the spring (44) drives the plunger (43) to move towards the end cover (45);
The extraction pipe (48) is L-shaped as a whole, the extraction pipe (48) is arranged on the side face of the device body (41), the extraction pipe (48) is communicated with the device body (41), and a temperature sensor (49) is arranged on a pipeline of the extraction pipe (48).
2. The main shielding leakage flow guiding system for the B-type enclosure system of claim 1, wherein the magnetic disc (42) is integrally cylindrical, a circular through hole is formed in the middle of the magnetic disc (42), the circular through hole of the magnetic disc (42) is communicated with the delivery pipe (3), the outer side end surface of the magnetic disc (42) is connected with the inner side of an inlet of the device body (41) through a fixing bolt, and a sealing ring (46) is arranged between the outer side end surface of the magnetic disc (42) and the inner side of the inlet of the device body (41).
3. The main shielding leakage flow guiding system for the B-type enclosure system of claim 1, wherein the device body (41) is in a shape of a whole hollow cylinder, two side end surfaces of the device body (41) are respectively provided with a device body (41) inlet and a device body (41) outlet, the aperture of the device body (41) inlet is the same as that of the delivery pipe (3), the aperture of the device body (41) outlet is larger than that of the device body (41), and the end surface of the device body (41) outlet is provided with a bolt hole.
4. The main shielding leakage diversion system for the B-type enclosure system according to claim 1, wherein the end cover (45) is integrally cylindrical, a bolt hole is formed in the outer side end surface of the end cover (45), the end cover (45) is fixed with the outlet end surface of the device body (41) through a bolt, a threaded hole is formed in the middle of the end cover (45), a reset bolt (47) is connected through the threaded hole in the middle of the end cover (45), and the reset bolt (47) is screwed into or screwed out of the device body (41) through the threaded hole in the middle of the end cover (45); when the reset bolt (47) is screwed into the device body (41), the reset bolt (47) pushes the plunger (43) to move towards the magnetic disc (42).
5. The main shielding leakage diversion system for the B-type enclosure system according to claim 1 is characterized in that the receiving tray (6) is installed below the outlet of the delivery pipe (3), the receiving tray (6) receives liquefied gas flowing out of the delivery pipe (3), and a heat insulation gasket (7) is arranged between the receiving tray (6) and the receiving base (8).
6. A method for main shield leakage diversion of a B-type containment system, which adopts the main shield leakage diversion system for the B-type containment system according to any one of claims 1-5, and is characterized in that the method specifically comprises the following steps:
The method comprises the steps that a main shielding leakage diversion system for a B-type enclosure system is prepared, the system comprises a temperature sensing release device (4) and a receiving device, the temperature sensing release device (4) is arranged at an outlet of an eduction tube (3), and the temperature sensing release device (4) comprises a device body (41), a magnetic disc (42), a plunger (43), a spring (44), an eduction tube (48), an end cover (45) and a reset bolt (47); the device comprises a device body (41), an outlet of a delivery pipe (3), the inner side of the inlet of the device body (41) is connected with one side of a magnetic disc (42), the other side of the magnetic disc (42) is magnetically connected with one side of a plunger (43), the other side of the plunger (43) is connected with one end of a spring (44), the other end of the spring (44) is connected with an end cover (45), the spring (44) drives the plunger (43) to move in the device body (41), the end cover (45) is mounted at one end of the outlet of the device body (41), a reset bolt (47) is connected with the end cover (45), and the delivery pipe (48) is mounted at the side surface of the lower end of the device body (41); the bearing device is arranged below the outlet of the eduction tube (48), the bearing device comprises a bearing disc (6) and a bearing base (8), the bearing disc (6) is connected with the bearing base (8), and the bearing base (8) is arranged on the hull mechanism;
Secondly, installing a temperature sensing release device (4) at the outlet of each delivery pipe (3) respectively, and installing the bearing device below the temperature sensing release device (4);
thirdly, when the airtight container (1) in the B-type enclosure system leaks, the liquefied gas in the airtight container (1) leaks into the insulating annular cavity (5), and the liquefied gas leaked into the insulating annular cavity (5) enters the temperature sensing release device (4) through the delivery pipe (3);
Fourthly, when the leaked liquefied gas in the closed container (1) reaches the inlet of the device body (41) through the delivery pipe (3), the liquefied gas contacts with the magnetic disc (42) and reduces the temperature of the magnetic disc (42) to enable the magnetism of the magnetic disc (42) to decline, the magnetic connection between the magnetic disc (42) and the plunger (43) weakens to enable the magnetic disc (42) to be separated from the plunger (43), and the spring (44) drives the plunger (43) to move towards the end cover (45);
Fifthly, when the spring (44) drives the plunger (43) to move towards the end cover (45) to stop, a closed cavity formed by the magnetic disc (42) and the plunger (43) is communicated with the eduction tube (48), and liquefied gas in the eduction tube (3) flows into the device body (41) and flows out to the receiving disc (6) through the eduction tube (48); the liquefied gas flowing onto the tray (6) evaporates into the air;
Sixthly, after the liquefied gas flows through the eduction tube (48), a temperature sensor (49) on the eduction tube (48) detects that the temperature of the eduction tube (48) is reduced, and the temperature sensor (49) feeds back a detection signal to a ship detection system and sends out an alarm signal;
Seventh, the operation eliminates and maintains the leakage condition of the closed container (1) according to the alarm signal, after the maintenance of the closed container (1) is completed, the temperature of the eduction tube (48) detected by the temperature sensor (49) is recovered to be normal, the plunger (43) is pushed to move towards the magnetic disc (42) by screwing the reset bolt (47), meanwhile, the temperature in the device body (41) rises, the magnetic disc (42) magnetically recovers to absorb the plunger (43), and the outlet of the eduction tube (3) is closed; after the magnetic disc (42) adsorbs the plunger (43), the reset bolt (47) is screwed to move to an initial position towards the end cover (45), and the main shielding leakage diversion work of the B-type enclosure system is completed.
7. A method for main shield leakage diversion of a B-type containment system according to claim 6, characterized in that the magnetic disc (42) in the fourth step is weakened when the temperature of the magnetic disc (42) is reduced to-40 ℃, the magnetic disc (42) being separated from the plunger (43); when the temperature of the magnetic disc (42) is increased to be higher than-40 ℃, the magnetic force of the magnetic disc (42) is recovered, and when the magnetic disc (42) is contacted with the plunger (43), the plunger (43) is adsorbed by the magnetic disc (42).
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Publication number Priority date Publication date Assignee Title
CN115638363A (en) * 2022-11-10 2023-01-24 沪东中华造船(集团)有限公司 A temperature-sensitive release device for main shield leakage of B-type containment system
CN118953593B (en) * 2024-10-16 2024-12-27 南通中远海运船务工程有限公司 Liquefied gas leakage flow guiding device suitable for liquefied gas ship and liquefied gas ship

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103562061A (en) * 2011-05-25 2014-02-05 三星重工业株式会社 Storage tank for liquefied materials and ship comprising same
CN204739266U (en) * 2015-05-29 2015-11-04 夏步前 LNG ( liquefied natural gas ) hangs down resistance automatic control check valve device
KR20170022667A (en) * 2015-08-21 2017-03-02 대우조선해양 주식회사 Leakage Liquefied Gas of Storage Tank Treatment System and Method
CN108146583A (en) * 2017-11-10 2018-06-12 沪东中华造船(集团)有限公司 A kind of Type B LNG cabins containment system
CN112253998A (en) * 2020-09-18 2021-01-22 上海蓝魂环保科技有限公司 Leakage detection system of LNG sealing system
CN112478061A (en) * 2020-12-08 2021-03-12 江南造船(集团)有限责任公司 Leakage liquid cargo guiding device of liquid cargo tank
CN114148459A (en) * 2022-01-07 2022-03-08 江南造船(集团)有限责任公司 Leakage liquid cargo collecting device suitable for low-temperature liquid cargo tank
CN114940234A (en) * 2022-06-23 2022-08-26 江苏新扬子造船有限公司 Device and method for treating leaked media of B-type fuel cabin containment system
CN115638363A (en) * 2022-11-10 2023-01-24 沪东中华造船(集团)有限公司 A temperature-sensitive release device for main shield leakage of B-type containment system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103562061A (en) * 2011-05-25 2014-02-05 三星重工业株式会社 Storage tank for liquefied materials and ship comprising same
CN204739266U (en) * 2015-05-29 2015-11-04 夏步前 LNG ( liquefied natural gas ) hangs down resistance automatic control check valve device
KR20170022667A (en) * 2015-08-21 2017-03-02 대우조선해양 주식회사 Leakage Liquefied Gas of Storage Tank Treatment System and Method
CN108146583A (en) * 2017-11-10 2018-06-12 沪东中华造船(集团)有限公司 A kind of Type B LNG cabins containment system
CN112253998A (en) * 2020-09-18 2021-01-22 上海蓝魂环保科技有限公司 Leakage detection system of LNG sealing system
CN112478061A (en) * 2020-12-08 2021-03-12 江南造船(集团)有限责任公司 Leakage liquid cargo guiding device of liquid cargo tank
CN114148459A (en) * 2022-01-07 2022-03-08 江南造船(集团)有限责任公司 Leakage liquid cargo collecting device suitable for low-temperature liquid cargo tank
CN114940234A (en) * 2022-06-23 2022-08-26 江苏新扬子造船有限公司 Device and method for treating leaked media of B-type fuel cabin containment system
CN115638363A (en) * 2022-11-10 2023-01-24 沪东中华造船(集团)有限公司 A temperature-sensitive release device for main shield leakage of B-type containment system

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