CJ/T 501-2016 Isolated gas-pressurization device
1 Scope
This standard specifies the terms and definitions, classification and designation, general requirements, requirements, test methods, inspection rules, as well as marking, packing, transportation and storage of the isolated gas-pressurization device.
This standard is applicable to the isolated gas-pressurization device for heating and air conditioning systems with the in-tank medium temperature less than 100°C.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 150.1 Pressure vessels - Part 1: General requirements
GB 150.2 Pressure vessels - Part 2: Materials
GB 150.3 Pressure vessels - Part 3: Design
GB 150.4 Pressure vessels - Part 4: Fabrication, inspection and testing, and acceptance
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 3047.1 Series of basic dimensions of panels, rack and cabinets for vertical increment of 20mm
GB/T 3797 Electrical control assemblies
GB 4208-2008 Degrees of protection provided by enclosure (IP code)
GB 7251.1 Low-voltage switchgear and controlgear assemblies - Part 1: General rules
GB/T 13306 Plates
GB/T 13384 General specifications for packing of mechanical and electrical product
GB/T 13934 Rubber, vulcanized or thermoplastic - Determination of flex cracking and crack growth (De Mattia)
JB/T 4709 Welding specification for steel pressure vessels
JB/T 4711 Coating and packing for pressure vessels transport
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
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3.1
isolated gas-pressurization device
equipment composed of diaphragm pneumatic vessel, electrical control box and auxiliary equipment, which makes use of the compression and expansion properties of the gas stored in the closed tank body to keep the pressure of heating and air conditioning system within a certain range (hereinafter referred to as "pressurization device")
3.2
diaphragm body
impermeable film with heat resistance and strength
3.3
tank body
metal tank capable of withstanding system pressure
3.4
diaphragm pneumatic vessel
metal tank that uses a built-in diaphragm body to isolate air and water
3.5
nominal insulation voltage
standard voltage value which is used to measure the insulation strength, electric clearance and creepage distance of different potential parts of an electrical appliance and its components under specified conditions
4 Classification and designation
4.1 Classification
4.1.1 The isolated gas-pressurization device is classified into the one with gas supply equipment and the one without gas supply equipment by the presence of gas supply equipment.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and designation
5 General requirements
6 Requirements
7 Test methods
8 Inspection rules
9 Marking, packing, transportation and storage
