CN111066873A - Marine fishery source fresh-keeping liquid nitrogen supply system - Google Patents

Marine fishery source fresh-keeping liquid nitrogen supply system Download PDF

Info

Publication number
CN111066873A
CN111066873A CN201911328928.1A CN201911328928A CN111066873A CN 111066873 A CN111066873 A CN 111066873A CN 201911328928 A CN201911328928 A CN 201911328928A CN 111066873 A CN111066873 A CN 111066873A
Authority
CN
China
Prior art keywords
liquid nitrogen
pipeline
valve
storage tank
liquid
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.)
Pending
Application number
CN201911328928.1A
Other languages
Chinese (zh)
Inventor
蔡勇
刘硕
林王林
姜凯友
孙智勇
张宇
陈磊
杨志坚
丁凡
张博
乔恺
王浩
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.)
Zhejiang University ZJU
Zhoushan Ocean Research Center of ZJU
Original Assignee
Zhejiang University ZJU
Zhoushan Ocean Research Center of ZJU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang University ZJU, Zhoushan Ocean Research Center of ZJU filed Critical Zhejiang University ZJU
Priority to CN201911328928.1A priority Critical patent/CN111066873A/en
Priority to JP2020041448A priority patent/JP6946500B2/en
Priority to US16/817,227 priority patent/US11519656B2/en
Publication of CN111066873A publication Critical patent/CN111066873A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B4/00—General methods for preserving meat, sausages, fish or fish products
    • A23B4/06—Freezing; Subsequent thawing; Cooling
    • A23B4/08—Freezing; Subsequent thawing; Cooling with addition of chemicals or treatment with chemicals before or during cooling, e.g. in the form of an ice coating or frozen block
    • A23B4/09—Freezing; Subsequent thawing; Cooling with addition of chemicals or treatment with chemicals before or during cooling, e.g. in the form of an ice coating or frozen block with direct contact between the food and the chemical, e.g. liquid N2, at cryogenic temperature
    • 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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
    • 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
    • F17C13/021—Special adaptations of indicating, measuring, or monitoring equipment having the height as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F17D1/082—Pipe-line systems for liquids or viscous products for cold fluids, e.g. liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • 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
    • F17C2203/03—Thermal insulations
    • F17C2203/0391—Thermal insulations by vacuum
    • 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
    • F17C2205/013—Two or more 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention relates to a fresh-keeping liquid nitrogen supply system for a marine fishery harvesting source. The system mainly comprises a liquid nitrogen storage tank system, a pipeline system, a liquid nitrogen flow control system and a state monitoring and early warning system; the liquid nitrogen storage tank system is formed by connecting a plurality of horizontal storage tanks in parallel and is dispersedly arranged on the deck and in the rudder engine room according to the existing space of the fishing boat; the pipeline system comprises a liquid nitrogen filling pipeline, a liquid nitrogen pressurizing pipeline, a liquid nitrogen supply pipeline and a pressure release and exhaust pipeline; the horizontal storage tank is respectively connected with the liquid nitrogen filling pipeline, the liquid nitrogen supply pipeline, the pressure relief and exhaust pipeline and the liquid nitrogen pressurization pipeline; the liquid nitrogen flow control system mainly comprises a hydraulic pressure transmitter, an electric ball valve and an ultralow temperature liquid nitrogen electromagnetic valve group; the state monitoring and early warning system is arranged in a fishing boat cab, and monitors the pressure value, the residual amount of liquid nitrogen and the pressure of the pipeline system in each horizontal storage tank in real time. The invention can ensure the normal operation of the liquid nitrogen quick freezing equipment on the fishing boat, and has simple system operation and high safety.

Description

Marine fishery source fresh-keeping liquid nitrogen supply system
Technical Field
The invention belongs to the field of marine product fresh-keeping processing, and particularly relates to a marine fishery source fresh-keeping liquid nitrogen supply system.
Background
In recent years, the fresh-keeping problem of aquatic products is troubling the development of marine fishery. The existing traditional freezing technology can cause unpredictable protein denaturation of aquatic products, reduction of water retention capacity, loss of juice after thawing and other quality deterioration. Therefore, there is a need to upgrade existing fresh keeping means to maximize the quality of the water product.
Compared with the traditional quick-freezing technology, the liquid nitrogen deep-freezing quick-freezing aquatic product fresh-keeping technology can reduce the damage to aquatic product cells and greatly keep the freshness and quality of the aquatic products. In recent years, with the great reduction of the price of liquid nitrogen, the wide application of the liquid nitrogen quick freezing technology in the field of aquatic product preservation becomes possible. The application of the liquid nitrogen quick freezing technology is directly extended to an on-line marine fishing processing ship, so that the source freshness-keeping level of marine products can be improved, and the freshness quality of the marine products can be maintained to the maximum extent.
Disclosure of Invention
The purpose of the invention is: aiming at the space layout of the existing fishing boat, a scheme of a marine catch source fresh-keeping liquid nitrogen supply system is provided, and normal operation of liquid nitrogen quick-freezing equipment on the fishing boat is ensured. The related marine fishery source fresh-keeping liquid nitrogen supply system is simple to operate and high in safety.
The invention mainly comprises a liquid nitrogen storage tank system, a pipeline system, a liquid nitrogen flow control system and a state monitoring and early warning system.
The liquid nitrogen storage tank system is formed by connecting a plurality of horizontal storage tanks in parallel and is dispersedly arranged on a deck and in a rudder cabin according to the existing space of a fishing boat.
The horizontal storage tank is of a double-layer inner shell and outer shell structure, heat preservation is achieved between the inner shell and the outer shell in a vacuumizing mode, and rib plates are used for supporting the inner shell and the outer shell in an encrypted mode.
The pipeline system comprises a liquid nitrogen filling pipeline, a liquid nitrogen pressurizing pipeline, a liquid nitrogen supply pipeline and a pressure relief exhaust pipeline. The outside of the pipeline system is wrapped with heat insulation materials.
The horizontal storage tank is respectively connected with the liquid nitrogen filling pipeline, the liquid nitrogen supply pipeline, the pressure relief and exhaust pipeline and the liquid nitrogen pressurization pipeline. And a liquid filling electric stop valve is arranged on the liquid nitrogen filling pipeline close to the outlet of the horizontal storage tank. And a safety valve A, a safety valve B, a pressure valve and an emptying valve are respectively arranged on the pressure and exhaust pipeline close to the outlet of the horizontal storage tank. And an electric stop valve for supplying liquid nitrogen is arranged on the liquid nitrogen supply pipeline close to the outlet of the horizontal storage tank. And a liquid nitrogen pressurizing pipeline is respectively provided with a pressurizing liquid outlet valve, a pressurizing device, a pressure regulating valve and a pressurizing liquid return valve, and the liquid nitrogen storage tank system shares one set of pressurizing device and pressure regulating valve.
The pressure set value of the safety valve B is higher than that of the safety valve A but lower than the highest limit pressure value of the horizontal storage tank. When the pressure in the horizontal storage tank reaches the set value of the safety valve A, the safety valve A is automatically opened, and nitrogen is discharged through the pressure-relief exhaust pipeline. When the safety valve A fails and cannot work normally, the pressure in the horizontal storage tank continues to rise until the pressure reaches the set value of the safety valve B, the safety valve B is automatically opened, and nitrogen is discharged through the pressure relief and exhaust pipeline.
The liquid nitrogen flow control system mainly comprises a liquid nitrogen filter, a pressure transmitter, a safety valve, an electric ball valve and an ultralow temperature liquid nitrogen electromagnetic valve group. The electric ball valve is used for controlling the on-off of a liquid nitrogen pipeline in the liquid nitrogen flow control system. The flow of liquid nitrogen in the liquid nitrogen flow control system can be controlled by the duty ratio of the on-off of the ultralow-temperature liquid nitrogen electromagnetic valve.
The state monitoring and early warning system is arranged in a fishing boat cab and monitors the pressure value, the residual amount of liquid nitrogen and the pressure of a pipeline system in each horizontal storage tank in real time.
Furthermore, the pressurizing liquid outlet valve, the pressurizer, the pressure regulating valve and the pressurizing liquid return valve are sequentially connected, and the pressurizing liquid outlet valve and the pressurizing liquid return valve are connected with the horizontal storage tank and used for regulating the liquid nitrogen pressure in the horizontal storage tank to reach a required set value, so that the normal work of a liquid nitrogen supply system is ensured; the bottom of the horizontal storage tank is provided with an isolation liquid collecting disc for receiving leaked liquid nitrogen, so that the influence of the leakage of the liquid nitrogen on the safety of the ship body is prevented.
Furthermore, a liquid level meter is arranged in the horizontal storage tank and used for measuring the amount of the residual liquid nitrogen in the tank.
Further, before the liquid nitrogen supply pipeline on the deck is merged with the liquid nitrogen supply pipeline in the cabin, the electric stop valve needs to be installed on the liquid nitrogen supply pipeline on the deck, and the lower electric stop valve needs to be installed on the liquid nitrogen supply pipeline in the cabin. And the converged liquid nitrogen supply pipeline is connected with a liquid nitrogen flow control system.
Furthermore, the liquid-filled electric stop valve, the liquid nitrogen supply electric stop valve, the upper electric stop valve, the lower electric stop valve, the pressurizing liquid outlet valve and the pressurizing liquid return valve can be remotely controlled, so that the operation on a ship is facilitated.
The invention has the beneficial effects that: can combine the spatial layout of current fishing boat, carry out appropriate transformation to a set of easy operation, security height, good and energy-conserving marine catch source fresh-keeping liquid nitrogen feed system of stability are provided, normal operating on the fishing boat of liquid nitrogen quick-freeze equipment is guaranteed.
Drawings
FIG. 1 is a diagram of a marine fishery source fresh-keeping liquid nitrogen supply system.
FIG. 2 is a schematic view of a single horizontal storage tank.
In fig. 1: 1-1 is a horizontal storage tank, 1-2 is an upper electric stop valve, 1-3 is a lower electric stop valve, 1-4 is a liquid nitrogen filter, 1-5 is a pressure transmitter, 1-6 is a safety valve, 1-7 is an electric ball valve, 1-8 is a safety valve, and 1-9 is an ultralow temperature liquid nitrogen electromagnetic valve bank.
In fig. 2: 2-1 is a supercharger, 2-2 is a pressurizing liquid outlet valve, 2-3 is a liquid level meter, 2-4 is a safety valve A, 2-5 is a safety valve B, 2-6 is a pressure valve, 2-7 is an emptying valve, 2-8 is a liquid filling electric stop valve, 2-9 is a liquid nitrogen supply electric stop valve, 2-10 is a pressurizing liquid return valve, and 2-11 is a pressure regulating valve.
Detailed Description
The invention will be further described with reference to fig. 1 and 2.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the invention mainly comprises a liquid nitrogen storage tank system, a pipeline system, a liquid nitrogen flow control system and a state monitoring and early warning system.
The liquid nitrogen storage tank system is formed by connecting a plurality of horizontal storage tanks 1-1 in parallel, and is dispersedly arranged on a deck and in a rudder cabin according to the existing space of a fishing boat, one part of tank bodies is placed in the rudder cabin to be loaded, and the other part of tank bodies is placed in a driving deck, so that the stability requirement of the fishing boat can be met.
The horizontal storage tank is of a double-layer inner and outer shell structure, heat preservation is achieved between the inner shell and the outer shell in a vacuumizing mode, and the inner shell and the outer shell are supported in an encrypted mode through ribbed plates, so that safe and stable work under severe sea conditions is guaranteed.
The horizontal storage tank is respectively connected with the pressurizing liquid outlet valve 2-2, the supercharger 2-1, the pressure regulating valve 2-11 and the pressurizing liquid return valve 2-10 and used for regulating the liquid nitrogen pressure in the horizontal storage tank to reach a required set value, so that the normal work of the liquid nitrogen flow control system is ensured. The bottom of the horizontal storage tank is provided with an isolation liquid collecting disc for receiving leaked liquid nitrogen, so that the influence of the leakage of the liquid nitrogen on the safety of the ship body is prevented. And a liquid level meter 2-3 is arranged in the horizontal storage tank and used for measuring the amount of the residual liquid nitrogen in the tank.
The pipeline system comprises a liquid nitrogen filling pipeline, a liquid nitrogen pressurizing pipeline, a liquid nitrogen supply pipeline and a pressure relief exhaust pipeline. The outside of the pipeline system is required to be wrapped with heat insulation materials.
The horizontal storage tank is respectively connected with the liquid nitrogen filling pipeline, the liquid nitrogen supply pipeline and the pressure relief and exhaust pipeline. And a liquid filling electric stop valve 2-8 is arranged on the liquid nitrogen filling pipeline close to the outlet of the horizontal storage tank. A safety valve A2-1, a safety valve B2-5, a pressure valve 2-6 and an emptying valve 2-7 are respectively arranged on the pressure release and exhaust pipeline close to the outlet of the horizontal storage tank. And an electric stop valve 2-9 for supplying liquid nitrogen is arranged on the liquid nitrogen supply pipeline close to the outlet of the horizontal storage tank. Before a liquid nitrogen supply pipeline on a deck is converged with a liquid nitrogen supply pipeline in a ship cabin, an electric stop valve 1-2 is required to be installed on the liquid nitrogen supply pipeline on the deck, and a lower electric stop valve 1-3 is required to be installed on the liquid nitrogen supply pipeline in the ship cabin. The converged liquid nitrogen supply pipeline is connected with a liquid nitrogen flow control system, and the exhaust port and the liquid filling port are externally connected, so that the automatically-pressurized nitrogen cannot be in the closed space of the rudder engine room, and the safety is ensured.
Each horizontal storage tank in the marine catch source fresh-keeping liquid nitrogen supply system can be filled with liquid nitrogen at the same time, and the next horizontal storage tank can be filled without waiting for the completion of filling of the liquid nitrogen in one horizontal storage tank, so that the liquid nitrogen filling time is greatly shortened. When liquid nitrogen needs to be filled into the horizontal storage tank, the liquid filling electric stop valve is opened; and when the horizontal storage tank is full of liquid nitrogen, closing the liquid-filled electric stop valve.
The pressure set value of the safety valve B is higher than that of the safety valve A but lower than the highest limit pressure value of the horizontal storage tank. When the pressure in the horizontal storage tank reaches the set value of the safety valve A, the safety valve A is automatically opened, and nitrogen is discharged through the pressure-relief exhaust pipeline. When the safety valve A fails and cannot work normally, the pressure in the horizontal storage tank continues to rise until the pressure reaches the set value of the safety valve B, the safety valve B is automatically opened, and nitrogen is discharged through the pressure relief and exhaust pipeline. The mode plays the double insurance effect, ensures horizontal storage tank safety.
The liquid nitrogen flow control system mainly comprises 1-4 parts of liquid nitrogen filters, 1-5 parts of pressure transmitters, 1-6 parts and 1-8 parts of safety valves, 1-7 parts of electric ball valves and 1-9 parts of ultralow-temperature liquid nitrogen electromagnetic valves. The electric ball valve is used for controlling the on-off of a liquid nitrogen pipeline in the liquid nitrogen flow control system. The flow of liquid nitrogen in the liquid nitrogen flow control system can be controlled by the duty ratio of the on-off of the ultralow-temperature liquid nitrogen electromagnetic valve.
When the horizontal storage tank on the deck is used for providing liquid nitrogen for the liquid nitrogen quick-freezing equipment, the lower electric stop valve is closed at first, the upper electric stop valve, the liquid nitrogen supply electric stop valve and the pressurization stop valve are opened in sequence, and the liquid nitrogen in the horizontal storage tank flows into the liquid nitrogen flow control system through the liquid nitrogen supply pipeline. When the horizontal storage tank in the cabin is used for providing liquid nitrogen for the liquid nitrogen quick-freezing equipment, the upper electric stop valve is closed at first, the lower electric stop valve, the liquid nitrogen supply electric stop valve and the pressurization stop valve are opened in sequence, and the liquid nitrogen in the horizontal storage tank flows into the liquid nitrogen flow control system through the liquid nitrogen supply pipeline.
The state monitoring and early warning system is arranged in a fishing boat cab, and monitors parameters such as a pressure value, the residual amount of liquid nitrogen, the pressure of a pipeline system and the like in each horizontal storage tank in real time.
The liquid-filled electric stop valve, the liquid nitrogen supply electric stop valve, the upper electric stop valve, the lower electric stop valve, the pressurizing liquid outlet valve and the pressurizing liquid return valve can be remotely controlled, and the operation on a ship is facilitated.

Claims (5)

1. Marine catch source liquid nitrogen feed system that keeps fresh mainly comprises liquid nitrogen storage tank system, pipe-line system, liquid nitrogen flow control system and state monitoring and early warning system, its characterized in that:
the liquid nitrogen storage tank system is formed by connecting a plurality of horizontal storage tanks in parallel and is dispersedly arranged on a deck and in a rudder cabin according to the existing space of a fishing boat;
the horizontal storage tank is of a double-layer inner and outer shell structure, heat preservation is realized between the inner shell and the outer shell in a vacuumizing mode, and rib plates are used for supporting the inner shell and the outer shell in an encrypted mode;
the pipeline system comprises a liquid nitrogen filling pipeline, a liquid nitrogen pressurizing pipeline, a liquid nitrogen supply pipeline and a pressure relief exhaust pipeline; the outside of the pipeline system is wrapped with heat insulation materials;
the horizontal storage tank is respectively connected with the liquid nitrogen filling pipeline, the liquid nitrogen supply pipeline, the pressure relief and exhaust pipeline and the liquid nitrogen pressurization pipeline; a liquid filling electric stop valve is arranged on the liquid nitrogen filling pipeline close to the outlet of the horizontal storage tank; a safety valve A, a safety valve B, a pressure valve and an emptying valve are respectively arranged on the pressure and exhaust pipeline close to the outlet of the horizontal storage tank; an electric stop valve for liquid nitrogen supply is arranged on the liquid nitrogen supply pipeline close to the outlet of the horizontal storage tank; a pressurizing liquid outlet valve, a pressurizing device, a pressure regulating valve and a pressurizing liquid return valve are respectively arranged on the liquid nitrogen pressurizing pipeline, and all horizontal storage tanks share one set of pressurizing device and pressure regulating valve;
the pressure set value of the safety valve B is higher than that of the safety valve A but lower than the highest limit pressure value of the horizontal storage tank; when the pressure in the horizontal storage tank reaches the set value of the safety valve A, the safety valve A is automatically opened, and nitrogen is discharged through a pressure release exhaust pipeline; when the safety valve A fails and cannot work normally, the pressure in the horizontal storage tank continues to rise until the pressure reaches the set value of the safety valve B, the safety valve B is automatically opened, and nitrogen is discharged through the pressure relief and exhaust pipeline;
the liquid nitrogen flow control system mainly comprises a liquid nitrogen filter, a pressure transmitter, a safety valve, an electric ball valve and an ultralow temperature liquid nitrogen electromagnetic valve group; the electric ball valve is used for controlling the on-off of a liquid nitrogen pipeline in the liquid nitrogen flow control system; the flow of liquid nitrogen in the liquid nitrogen flow control system can be controlled by the duty ratio of the on-off of the ultralow-temperature liquid nitrogen electromagnetic valve;
the state monitoring and early warning system is arranged in a fishing boat cab and monitors the pressure value, the residual amount of liquid nitrogen and the pressure of a pipeline system in each horizontal storage tank in real time.
2. The marine fishery source fresh-keeping liquid nitrogen supply system according to claim 1, wherein: the liquid level regulating device comprises a liquid level regulating valve, a liquid level regulating valve and a liquid level regulating valve, wherein the liquid level regulating valve, the liquid; the bottom of the horizontal storage tank is provided with an isolation liquid collecting disc for receiving leaked liquid nitrogen, so that the influence of the leakage of the liquid nitrogen on the safety of the ship body is prevented.
3. The marine fishery source fresh-keeping liquid nitrogen supply system according to claim 1, wherein: the horizontal storage tank is internally provided with a liquid level meter for measuring the residual liquid nitrogen amount in the tank.
4. The marine fishery source fresh-keeping liquid nitrogen supply system according to claim 1, wherein: before a liquid nitrogen supply pipeline on the deck is converged with a liquid nitrogen supply pipeline in a cabin, the liquid nitrogen supply pipeline on the deck needs to be provided with an electric stop valve, and the liquid nitrogen supply pipeline in the cabin needs to be provided with a lower electric stop valve; and the converged liquid nitrogen supply pipeline is connected with a liquid nitrogen flow control system.
5. The marine fishery source fresh-keeping liquid nitrogen supply system according to claim 4, wherein: the liquid-filled electric stop valve, the pressurization liquid outlet valve, the pressurization liquid return valve, the liquid nitrogen supply electric stop valve, the upper electric stop valve and the lower electric stop valve can be controlled remotely, and the operation on a ship is facilitated.
CN201911328928.1A 2019-12-20 2019-12-20 Marine fishery source fresh-keeping liquid nitrogen supply system Pending CN111066873A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201911328928.1A CN111066873A (en) 2019-12-20 2019-12-20 Marine fishery source fresh-keeping liquid nitrogen supply system
JP2020041448A JP6946500B2 (en) 2019-12-20 2020-03-11 High-precision control system and method for onboard ultra-low temperature quick freezing with liquid nitrogen of marine products
US16/817,227 US11519656B2 (en) 2019-12-20 2020-03-12 High-precision control system and method for shipborne cryogenic flash freezing of aquatic product using liquid nitrogen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911328928.1A CN111066873A (en) 2019-12-20 2019-12-20 Marine fishery source fresh-keeping liquid nitrogen supply system

Publications (1)

Publication Number Publication Date
CN111066873A true CN111066873A (en) 2020-04-28

Family

ID=70316418

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911328928.1A Pending CN111066873A (en) 2019-12-20 2019-12-20 Marine fishery source fresh-keeping liquid nitrogen supply system

Country Status (1)

Country Link
CN (1) CN111066873A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112628601A (en) * 2020-12-03 2021-04-09 蓝箭航天技术有限公司 Temperature control system for high-pressure gas preparation device and control method thereof
CN112815232A (en) * 2020-12-30 2021-05-18 大连理工大学 Liquid nitrogen online preparation and online switching type regulation and control system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101216233A (en) * 2008-01-14 2008-07-09 浙江大学 Controllable temperature deep cooling processing system based on self supercharging cryogenic fluids conveying technology
CN103202524A (en) * 2012-01-17 2013-07-17 光明乳业股份有限公司 Liquid nitrogen cryogenic granulation device
JP2016101980A (en) * 2014-11-27 2016-06-02 株式会社Ｉｐｏ Liquid nitrogen filling device
CN105650474A (en) * 2016-01-07 2016-06-08 北京航天发射技术研究所 Liquid nitrogen conveying pipeline capable of preventing water attacks
CN107307059A (en) * 2017-06-29 2017-11-03 浙江大学舟山海洋研究中心 The fresh-keeping liquid nitrogen quick-freezing plant in ocean catches boat-carrying source
CN109110319A (en) * 2018-07-13 2019-01-01 惠龙易通国际物流股份有限公司 Carbon steel storage tank, carbon steel tank arrangement and its temperature control method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101216233A (en) * 2008-01-14 2008-07-09 浙江大学 Controllable temperature deep cooling processing system based on self supercharging cryogenic fluids conveying technology
CN103202524A (en) * 2012-01-17 2013-07-17 光明乳业股份有限公司 Liquid nitrogen cryogenic granulation device
JP2016101980A (en) * 2014-11-27 2016-06-02 株式会社Ｉｐｏ Liquid nitrogen filling device
CN105650474A (en) * 2016-01-07 2016-06-08 北京航天发射技术研究所 Liquid nitrogen conveying pipeline capable of preventing water attacks
CN107307059A (en) * 2017-06-29 2017-11-03 浙江大学舟山海洋研究中心 The fresh-keeping liquid nitrogen quick-freezing plant in ocean catches boat-carrying source
CN109110319A (en) * 2018-07-13 2019-01-01 惠龙易通国际物流股份有限公司 Carbon steel storage tank, carbon steel tank arrangement and its temperature control method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112628601A (en) * 2020-12-03 2021-04-09 蓝箭航天技术有限公司 Temperature control system for high-pressure gas preparation device and control method thereof
CN112815232A (en) * 2020-12-30 2021-05-18 大连理工大学 Liquid nitrogen online preparation and online switching type regulation and control system
CN112815232B (en) * 2020-12-30 2022-05-13 大连理工大学 Liquid nitrogen online preparation and online switching type regulation and control system

Similar Documents

Publication Publication Date Title
CN111066873A (en) Marine fishery source fresh-keeping liquid nitrogen supply system
DK176718B1 (en) System and method of transporting live aquatic animals
EP2829467B1 (en) Vessel for transporting compressed gas
CN107683891A (en) A kind of method and apparatus of liquid carbon dioxide high pressure freezing fresh food
CN102161402A (en) Vacuum fresh-keeping storage device for ocean-going ship
CA3195624A1 (en) Systems and methods for the hatching, seeding, and/or cultivating of a target product
CN106185084A (en) Cold Chain Logistics preservation device
CN102975821B (en) Enclosed type circulation live keeping ship
CN106247671A (en) Portable automatic temperature control medical refrigerated transport case and control method thereof
US4270598A (en) Apparatus for processing seafood
CN102009740A (en) Method and device for keeping fresh aquatic products by cold accumulation on board
CN107960613B (en) Pressure-regulating and temperature-controlling egg pickling equipment adopting liquid circulation and control method
CN108867766B (en) Emergency water supply method for important plant water system of nuclear power ship
JP6946500B2 (en) High-precision control system and method for onboard ultra-low temperature quick freezing with liquid nitrogen of marine products
CN204707924U (en) A kind of ensilage treating apparatus
US1912896A (en) Art of refrigerating fish at sea
CN205151747U (en) Pier and tank field oil loading and unloading VOCs produce analogue means
KR102219269B1 (en) Live fish container for air transportation
CN212566449U (en) Small-sized movable cold accumulation cold storage house adopting cold accumulation balls
JP5733888B2 (en) Method and apparatus for freezing object to be frozen
CN206973928U (en) Non-freezing solution refrigeration plant
JPS62163654A (en) Apparatus for maintaining freshness of caught fish
KR102717673B1 (en) Floating cold storage barge
CN103612815A (en) Cold-chain logistics transportation cold insulation box
CN114001272B (en) BOG management system for LNG lightering operation

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20200428