Standard for natural gas cylinder valves, national standard for household liquefied gas pressure red

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Standard number: GB 7512-2006

Standard name: LPG cylinder valve.

Standard Status: Active.

Date of implementation: 2007-2-1

Promulgating Departments:General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Technical Commission of the People's Republic of China.

Brief introduction: This standard stipulates the terms and definitions, models, structural types and basic dimensions, technical requirements, inspection and test methods, inspection rules, signs, packaging, storage and transportation of LPG cylinder valves. This standard is applicable to LPG cylinder valves with an ambient temperature of -40 60 and a nominal working pressure not greater than that.

Standard name: LPG cylinder.

Standard Status: Active.

Date of implementation: 2007-2-1

Promulgating Departments:General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China.

Brief introduction: This standard stipulates the type, material, design, manufacturing, test method, inspection rules, marking, packaging, storage and service life of LPG cylinders. This standard is applicable to steel welded gas cylinders that can be used at normal ambient temperature (-40 60), with a nominal working pressure of no more than 150L and a repetitive capacity of liquefied petroleum gas.

Standard Name: Inspection Procedures for Export Liquefied Petroleum Gas Cylinders.

Standard Status: Active.

Date of implementation: 2002-9-1

Standard name: Periodic inspection and evaluation of liquefied petroleum gas cylinders.

Standard Status: Active.

Date of implementation: June 1, 2000

Promulgating Departments: State Bureau of Quality and Technical Supervision.

Brief introduction: This standard stipulates the basic methods and technical requirements for the periodic inspection and evaluation of civil liquefied petroleum gas cylinders. This standard is applicable to civil liquefied petroleum gas cylinders with a nominal volume of refillable.

Standard name: Regulations for filling liquefied gas cylinders.

Standard Status: Active.

Date of implementation: 1993-9-1

Promulgating Departments: State Bureau of Technical Supervision.

Brief introduction: This standard stipulates the basic principles and safety technical requirements for the filling of liquefied gas cylinders. This standard is applicable to the filling of high-pressure liquefied gas cylinders and low-pressure liquefied gas cylinders with saturated vapor pressure not less than gauge pressure at the highest service temperature, the same below.

This standard does not apply to the filling of liquefied gas by tankers.

Standard name: Regulations on the packaging and transportation of liquefied petroleum gas cylinders.

Standard Status: Active.

Date of implementation: 2004-8-1

Promulgating Departments:Ministry of Construction of the People's Republic of China.

Brief introduction: This standard stipulates the requirements in the process of transportation and packaging of liquefied petroleum gas cylinders. This standard is applicable to steel welded gas cylinders with a normal ambient temperature of 40 60, a hydrostatic test of no more than 3 2MPa, and a nominal volume of not less than 150L that can be refilled with liquefied petroleum gas.

This standard does not apply to cylinders in use. Derivation.

I hope that there are a lot of chacha inaugurations.

Legal Analysis:1The service life of a pressure reducing valve is generally five years.

Do not twist and disassemble without permission. It should be replaced on time and on time, and it should not wait until there is a danger to think of replacement. 2.

The national standard GB8334 stipulates that cylinders will be inspected every 4 years from the date of manufacture, YSP-50 cylinders will be inspected every 3 years, and any type of cylinder that is more than 15 years old will be scrapped.

Legal basis: Interim Provisions on the Safety Management of Liquefied Petroleum Gas

Article 7 The storage tank must be equipped with a safety valve. Tanks larger than 100 cubic meters should be equipped with two spring-loaded safety valves in working condition. All valves set between the safety valve and the tank must be in an open state and should have a lead seal.

The opening pressure of the safety valve must not exceed the design pressure. Safety valves should be inspected once a year.

Article 9 Before the storage tanks and containers are put into use for the first time, the oxygen content of the tanks shall be less than 4%. When filling LPG for the first time, the gas phase valve can be opened first, and the filling can be carried out slowly after the pressure of the two tanks is balanced.

Legal analysis: The material of the main body of the cylinder (referring to the receiving elements such as cylinder and head) must be smelted by open hearth, electric furnace or oxygen converter, and have good stamping and welding properties. All parts welded to the cylinder body must be made of materials that are compatible with the weldability of the main body material.

The tensile strength of the weld made of the welding material used shall not be lower than the lower limit of the specified value of the tensile strength of the base metal. Materials, including welding materials, should comply with the provisions of the corresponding standards and must have a certificate of conformity. The main material must be verified by furnace and tank number, and the mechanical preparation performance must be verified by batch number, and the material that has been verified to be qualified should be marked with material.

Legal basis: "Safety Standard for Liquefied Petroleum Gas Cylinders" This standard is applicable to steel welded gas cylinders used at normal ambient temperature (-40--+60) with a test pressure of MPa (24kgf cm2) and a water volume of reusable liquefied petroleum gas.

Summary. Hello dear, the lower the lower limit of the gas cylinder drinking water is not to use the adjustable pressure reducing valve, which belongs to the "Town Gas Design Code" GB 50028-2006 (2020 Revised Edition)**The lower the lower the gas, the greater the danger. According to the recent large-scale investigation of the use of bottled liquefied petroleum gas cylinders in some restaurants, the restaurants that were investigated basically have potential safety hazards, and some of them are quite serious:

What kind of regulation does it belong to if you can't use an adjustable pressure reducing valve for liquefied gas cylinders?

Hello dear, the lower the lower limit of the gas used in the liquefied gas cylinder drinking can not use the adjustable pressure reducing valve, which belongs to the "Town Gas Design Code" GB 50028-2006 (2020 revised edition)**The lower the lower the gas, the greater the danger. According to the recent large-scale investigation of the use of bottled liquefied petroleum gas cylinders in some restaurants, the restaurants that were investigated basically have potential safety hazards, and some of them are quite serious

Liquefied petroleum gas cylinders are one of the main storage and use equipment for LPG. In order to ensure the safety of people's lives and property, China implements national standards for liquefied petroleum gas cylinders. This standard specifies a series of technical requirements and test methods for LPG cylinders to ensure the safe use of LPG cylinders.

The national standard for liquefied petroleum gas cylinders not only stipulates the technical requirements for liquefied petroleum gas cylinders, but also makes detailed provisions on its production, inspection, delivery, use and other aspects. For manufacturers, production must be carried out in strict accordance with national standards; For third-party inspection agencies, inspections must be carried out in accordance with national standards. These regulations ensure the quality and safety of LPG cylinders.

The implementation of the national standard for liquefied cavity rotten liquefied petroleum gas cylinders is of great significance for ensuring the safety of people's lives and property and controlling the safety risks of dangerous goods. Only by strictly adhering to national standards can the quality and safety of LPG cylinders be ensured. At the same time, it is also very necessary to widely publicize the knowledge of national standards for liquefied petroleum gas cylinders and improve the safety awareness of the people.

Hello, I'm glad to be able to answer for you Liquefied gas cylinder self-closing angle valve is a common valve in the gas industry, which needs to be regularly calibrated by the state to ensure its safe and reliable coarse chain use. The national calibration standard for self-closing angle valves is GB 8335-2008 "National Metrology Technical Specifications for Liquid Petroleum Gas Self-closing Angle Valves". The standard ridge specifies the technical requirements and test methods for the use, inspection and calibration of self-closing angle valves, including valve air tightness test, inflation pressure test, visual inspection, etc.

When carrying out the stool seepage calibration of the cylinder self-closing angle valve, it is necessary to test and evaluate it in strict accordance with the standards to ensure the normal operation and safety of the valve. 

Summary. The specifications and parameters of natural gas cylinders mainly include: 1

Volume: generally 5kg, 10kg, 15kg, 20kg, 30kg, 50kg, etc.; 2.Working Pressure:

Generally; 3.Operating temperature: generally -20 50; 4.

Material: generally steel, but also aluminum alloy; 5.Size:

It is generally cylindrical, but there are also square ones; 6.Filling medium: generally natural gas, but also liquefied petroleum gas; 7.

Safety valve: generally automatic safety valve, there are also manual safety valves; 8.Filling capacity:

Generally 5kg, 10kg, 15kg, 20kg, 30kg, 50kg, etc.; 9.Filling method: generally automatic filling, but also manual filling; 10.

The specifications and parameters of natural gas cylinders mainly include: 1Volume:

Generally 5kg, 10kg, 15kg, chain 20kg, 30kg, 50kg, etc.; 2.Working pressure: generally; 3.

Operating temperature: generally -20 50; 4.Material:

It is generally made of steel, but there are also aluminum alloys; 5.Size: generally cylindrical, but also square; 6.

Filling medium: generally natural gas, there are also liquefied petroleum gas containing holes; 7.Safety Valve:

Generally, it is an automatic safety valve, and there are also manual safety valves; 8.Filling capacity: generally 5kg, 10kg, 15kg, 20kg, 30kg, 50kg, etc.; 9.

It usually takes about 5 minutes.

Can you add, I don't quite understand it.

The specifications and parameters of natural gas cylinders mainly include: 1Volume:

Generally 5kg, 10kg, 15kg, 20kg, 30kg, 50kg, etc.; 2.Working pressure: generally; 3.

Operating temperature: generally -20 50; 4.Material:

Generally made of steel or aluminum alloy; 5.Size: Generally, the height does not exceed the brother seepage, and the diameter does not exceed; 6.

Filling capacity: generally 5kg, 10kg, 15kg, 20kg, 30kg, 50kg, etc.; When using natural gas cylinders, if something goes wrong, it may be due to the following reasons:

1.The quality of the gas cylinder itself: the quality of the gas cylinder itself is unqualified, which may lead to gas leakage and bursting of the gas cylinder; 2.

Improper use of gas cylinders: Improper use of gas cylinders may lead to gas leakage and bursting of gas cylinders; 3.Improper installation of gas cylinders:

Improper installation of gas cylinders may lead to gas leakage and bursting of gas cylinders; 4.Aging of gas cylinders: Aging of gas cylinders may lead to gas leakage, bursting and other annihilation situations.

Workaround:1Select a qualified cylinder:

Gas cylinders should be inspected regularly, problems should be found in time, and dealt with in time. Personal Tips:1

When using natural gas cylinders, attention should be paid to the safety of the spine and the relevant safety operation procedures should be observed; 2.When purchasing gas cylinders, you should choose qualified gas cylinders produced by regular manufacturers; 3.When installing gas cylinders, the relevant installation procedures should be observed; 4.

Inspect the gas cylinders regularly, find problems in time, and deal with them in time.

The clockwise direction is on. Big side guess clockwise open, counterclockwise off, facing the gas tank to the left is open and right is off.

Some users know that the testing time limit has arrived, but they give up the test because of the trouble of sending it for testing, etc. The existence of these problems has led to the flow of a large number of cylinders that do not conform to the standard or are overdue and uninspected to thousands of households, planting "time bombs" one after another in the homes of the general public, and becoming a major safety hazard in the city.

How to use:

During the use of liquefied gas cylinders, they must go to the cylinder testing station approved by the labor department for regular inspection and maintenance. However, only a few state-owned gas filling companies can truly fulfill the regulations, and the vast majority of individual filling stations (points) do not act in accordance with the regulations.

The reason for the lack of cylinder inspection is that in addition to the individual filling station (point) for the benefit and disregard for the user's safety, a considerable part of the reason for the rolling type comes from the user itself. Mainly manifested in:

1. There is no problem of opening an account for gas cylinders. Most of the people who come to inflate are some users who are greedy for convenience and ignore safety issues, and some of these users are not only local residents, but also some of them are outsiders, and some of them are ignorant of the common sense that cylinders need to be tested regularly.

Second, the use of the harsh environment causes the life of the cylinder to be shortened. Wet areas such as migrant workers' sheds and food stalls at construction sites are easy to cause the cylinders to rust and peel off, resulting in the reduction of the wall thickness of the cylinders.

The liquefied gas sampling cylinder complies with the SH T0233-92 "Liquefied Gas Sampling Method" standard, and the natural gas sampling cylinder is suitable for the sampling, storage and transportation of ethylene, propylene, butadiene, liquefied petroleum gas, natural gas and other gases and liquids under the same operating conditions.

Technical parameters of liquefied gas sampler.

1 Basic parameters of liquefied gas sampler.

Working pressure of carbon dioxide sampling cylinder: 4MPa 20MPa; Withstand voltage: 6MPa 38MPa; Operating Temperature:

40℃～+50℃；Liquefied gas high-pressure sampling cylinder material: 316 or 316L or 1Cr18Ni9Ti; Applicable medium: 316L non-corrosive liquid and gaseous medium with temperature and pressure within the specified range; The liquefied gas sampler is equipped with an explosion-proof safety device.

2 PTFE coating (optional).

The inner surface of the liquefied gas sampler can be coated with PTFE to obtain a non-stick surface, prevent the adsorption of trace elements in the sample, improve the anti-corrosion performance of the liquefied gas sampler, and facilitate the cleaning of the liquefied gas sampler.

Liquefied Gas Sampler Accessory (Optional).

1 Quick coupling.

Quick couplings can realize fast connection and separation in pressure systems, good sealing performance, and can complete connection operations without rotating, twisting or tightening, and are widely used in various fields. Can be used with a liquefied gas sampler to improve work efficiency.

2 Pressure gauge.

Installed at one end of the sampler valve, the pressure of the specimen in the sampler can be directly read.

3 Connect the hose.

The connecting hose is an indispensable flexible connection in the modern industrial piping system. It is widely used in metallurgy, petrochemical industry, aerospace, machinery, electric power, light industry and other fields. The specifications of the connecting hose are as follows: (1) Nylon transparent hose (2) High pressure metal connection hose.

Four. Liquefied Gas Sampler Specifications.

1. According to the volume, petroleum gas sampling cylinders can be divided into 25ml ml, 100ml, 150ml, 200ml, 250ml, 300ml, 500ml, 1000ml, 2000ml, 2500ml and 3000ml

2 According to the product structure, petroleum gas sampling cylinders can be divided into: single-end open liquefied gas sampler and double-end open liquefied gas sampler.