The liquefied natural gas (LNG) storage tank is composed of the tank body, instruments, pipelines, valves, etc. The LNG storage tank features two liquid inlet methods, top and bottom, which can be selected and used according to the actual situation.

The inner tank of the Liquefied Natural Gas (LNG) storage tank is equipped with a safety system device featuring dual safety valves. Under normal operating conditions, one set is in operation and the other in standby. Should the operational safety valve trip, the manual pressure relief valve is immediately opened to release pressure below the tank's operating pressure. Simultaneously, the safety device is swiftly switched to the standby system via the manual handle, thereby effectively ensuring the tank's safety. This safety system device consists of safety valves, explosion-proof devices, vent valves, and three-way ball valves, not only reducing pipeline welding but also offering excellent fire and electrostatic protection. Additionally, the safety relief ports on the housing are fully guaranteed to ensure the overall safety and reliability of the equipment. The low-temperature pipeline is centrally extracted for ease of operation and control, and the extraction point features a Dura tube structure to accommodate low-temperature requirements and minimize pipeline stress due to thermal expansion and contraction, ensuring the tank's safety. The vacuum pump valve employs a triple safety mechanism.OThe shape ring seal effectively ensures the reliability of the sandwich seal, and is made entirely of stainless steel with a compact size. The top design of the Liquefied Natural Gas (LNG) storage tank features a hanging structure for easy transportation, lifting, and installation. The unique manhole design ensures internal cleanliness when the container is sealed. Vacuum isolation valves and combined vacuum regulators are used on the LNG storage tank for easy measurement of the sandwich vacuum level and maintenance, extending the tank's lifespan and improving its quality. The LNG storage tank is equipped with a level gauge and pressure gauge for local display of level and pressure. The sandwich insulation material is high-quality domestic pearlescent sand, with the following performance parameters of the pearlescent sand:

Serial Number Indicator Name Unit Index 

1 Loose Bulk Density Kg/m3 50－60 

2 Particle size mm 0.1－0.2 Not less than80% 

3 Thermal Conductivity (at atmospheric pressure),Temperature310-77k） W/m.k.s ＜0.026 

4 Moisture Content(Weight) % ＜0.1 

5 Unexpanded rate % ≤1 

6 Temperature ℃ －200℃～600℃ 

7 PHValue   6.5～7.5 

Section 3: Inspection, Testing, and Acceptance

1Inspect the inner cylinder material; use only upon passing inspection.

2All welds are subject toGB150.1～150.4-2011Inspection of standards and drawings is conducted; upon passing inspection.A、BWeld-type seam100Radiation % DetectionC、DWeld-like seam100Percent penetration testing and issue a test report

3After the cylinder assembly is completed, pleaseGB150.1～150.4-2011Inspection of geometric dimensions, pipe end orientations, and shape deviations according to standards and drawings.

4After inspection, conduct a pneumatic test and issue a pressure test report. Upon passing the pneumatic test, evacuate the air. Once the vacuum level meets the requirements, perform a helium leak test.

5After the interlayer leak test passes, fill with pearlescent sand and then evacuate the air, achieving a vacuum degree ofGB/T18442-2011Final sealed vacuum degree in compliance with standard requirements.

Section 4: Technical Documents

1After the contract is signed, the seller shall provide the following technical data to the buyer:

⑴ Certificate of Product Quality for the equipment1Set (supplied with equipment)

Including: Certificate of Material for Main Pressure Components, Bill of Materials, Structural Dimensions Inspection Report, Inspection Plan, Product Qualification Certificate, Pressure Vessel Product Data Sheet, Welding Records, Non-Destructive Testing Reports, Pressure Test Reports, Supervision and Inspection Certificate for Special Equipment Manufacturing (Local Inspection Institute), Product Brand Copy

As-built drawings Various1Pack (supplied with the equipment)

Section 3: Strength Calculation Sheets1Piece (supplied with the equipment)

④ Instruction Manual1Piece (supplied with the equipment)   

Equipment process flow diagrams and basic reference diagrams1Piece (Contract)7Available daily)

⑹ Certificate of Conformity for accessories, Instrument Calibration Report 1Each (supplied with the equipment)

Low-temperature storage tanks are primarily used in the industrial gas sector, with a vast range of applications. Industries such as steel mills, chemicals, oil, food, and aerospace all require gases. Industrial gases like oxygen, nitrogen, and argon, which are in high demand, are separated from air using air separation equipment. The air is compressed and liquefied, then separated based on the different boiling points of oxygen, nitrogen, and argon, and stored in low-temperature storage vessels.

    Liquefied Natural GasThe tank features a long service life, compact structure, minimal land area, centralized control, ease of operation and maintenance, and is a double-layer fixed vacuum powder insulation low-temperature storage tank. The inner shell is made of stainless steel.,Outer shell material isQ235BOr16MnRThe liquid oxygen tank surface is coated with anti-corrosion materials using sandblasting, sweeping, and spraying techniques, along with a two-component rapid curing liquid paint.

Liquefied Natural Gas (LNG) storage tanks consist of the tank body, instruments, pipelines, valves, etc. These tanks are designed with both upper and lower liquid inlet methods, allowing for flexible selection based on actual conditions.

The inner tank of the Liquefied Natural Gas (LNG) storage tank is equipped with a safety system device featuring dual safety valves. In normal operation, one set is in working condition while the other is on standby. If the working safety valve trips, the manual pressure relief valve is immediately opened to release pressure to the highest working pressure of the tank. Simultaneously, the safety device is swiftly switched to the standby system via the manual handle, effectively ensuring the tank's safety. This safety system device consists of safety valves, explosion-proof devices, vent valves, and three-way ball valves, not only improving pipeline welding but also featuring excellent fire and static electricity prevention structures. Additionally, the safety relief openings on the casing are fully guaranteed to ensure the entire equipment's safety and reliability. The low-temperature pipeline is centrally extracted for ease of operation and control, and the extraction outlet is designed with a Duralumin structure to meet low-temperature requirements and reduce stress caused by thermal expansion and contraction in the pipeline, ensuring the tank's safety. The vacuum pump valve is sealed with three "O" rings, effectively ensuring the reliability of the sandwich seal, and is made of full stainless steel with a compact size. The top of the LNG storage tank features a research and development suspension structure for easy transportation, lifting, and installation. The unique manhole design ensures the cleanliness inside the inner tank when it is sealed. Vacuum isolation valves and combined vacuum gauges are used on the LNG storage tank for measuring the vacuum degree of the sandwich and for maintenance, extending the tank's service life and improving its quality. The LNG storage tank is equipped with a level gauge and a pressure gauge for local display of liquid level and pressure.