The technical requirements for pressurized explosion-proof enclosures include production standards, explosion-proof principles, air source requirements, commissioning methods, usage methods, and other major aspects.。

ProductionStandard

Positive Pressure Explosion-proofCabinetOverseasDescribeForGGDCabinetFormstructure，manufacturingComply with的explosion-proofStandardIsByPositive PressureEnclosureProtectionelectricalequipment。

1. For PX type positive-pressure enclosures containing hot components that require cooling time, they should not be easily opened without tools or keys. The joint surface between the main chamber and auxiliary chamber is sealed by welding and then resealed with resin adhesive. The inlet and outlet cables and pressure sensor pressure tube outlets between the main and auxiliary chambers are also sealed with resin adhesive. Four lifting rings are provided on the top of the positive-pressure explosion-proof cabinet for transport and hoisting, and the installation method is floor-mounted with cable entry from below. This facilitates users to design cable trenches according to relevant international and industry standards, combined with the structural requirements of this control cabinet.

2.Positive Pressure Explosion-proofCabinetinViceCavityNextAspectAdvancedStationConfigure了OneSetAerospaceStationDuringFilterUnitOverallcomponent、manualAdvancedStationReducePressureValve(DNl5，ConnectionInDuringFilterUnitOverallcomponentSupreme)TwoProductionAdvancedStationElectromagneticValve、DrainStationConfigure了OneProductionmanualDrainStationValve(DNl5)OneProductionElectromagneticValve，FacilityUserAccordingPipeDiameterDistributionPipe(Configure了RelatedShouldLiveConnectorFastInUserinGasAdvancedReputationProcessingdirectly And StationPipeConnection)Positive Pressure

3.BoxFormstructure的Positive Pressure Explosion-proofCabinetadoptSteel Plate Weldingstructure，Main、ViceDiscForSupremeNextstructure，HangFormInstallation，NextIncoming Line、FrontSiemensOperate And Overhaul。

4. The console-type structure of the pressurized explosion-proof enclosure is formed by folding and welding steel plates, with the main and auxiliary panels in a front-rear configuration, pedestal installation, bottom cable entry, console operation, and rear door maintenance.。

5. According to the air intake method, it is divided into ventilation type and compensation type.。The ventilation type provides uninterrupted continuous air supply, and the working heat of components in the pressurized chamber can be carried away with the air path, providing excellent heat dissipation, suitable for solving the heat dissipation problem of high-power explosion-proof frequency converters; the compensation type provides intermittent air supply, and the pressurized chamber must have good sealing to ensure low gas consumption.。

6. Steel plate material generally uses GB710-88 cold-rolled steel plate, and stainless steel material can also be selected according to user requirements.。

explosion-proofPrinciple

Positive Pressure Explosion-proofCabinetadopt的IsPositive Pressure Explosion-proofform。This positive pressure refers to artificially creating an atmospheric pressure difference so that the pressure inside the cabinet is slightly higher than the outside, preventing flammable gases and dust from entering the cabinet, thus preventing explosions.。

Air Sourcerequirements

UsePositive Pressure Explosion-proofCabineton-sitemustCriticalWithAir Source， Namely manufacturingPressuredifferenceUsers的CleanCompressed Air，UpWithUsersAerospacePressureMachine，AlsoUpWithUsersInstrumentTableRisk，Thesesome叫StriveAir Source。The air source pressure is generally between 0.2 MPa and 0.8 MPa. If the pressure is too low, positive pressure cannot be formed; if the pressure is too high, it may cause high-pressure impact on the cabinet.。

Commissioningmethod

inUseExplosion-proof positive pressure cabinetWhen，LeadingCriticalAdvanced Commissioning， Mainly Advanced Positive PressureCommissioning，DescribeCostPositive PressureAfter-sales，Explosion-proof positive pressure cabinetAbilityAbilityInvestIntonormalUse，没WithDescribeCostPositive PressureFront，Explosion-proof positive pressure cabinetInvinciblepossessexplosion-prooffunction。

1. Check whether the exterior of the explosion-proof pressurized enclosure has obvious damage, i.e., a sealing inspection.。

2. Open the inlet valve, connect the air source, and power on for commissioning. The pressure inside the cabinet will rise slowly. When it reaches 100 Pa, the positive pressure control system will receive data from the pressure sensor, displayed on the LCD screen, until the pressure stabilizes between 100 Pa and 400 Pa. At this point, commissioning is complete and it can be put into use.。

Usage Method

Explosion-proof positive pressure cabinetbelong toAutomatedElectricalequipment，ThroughPositive PressurecontrolsystemConnectLockcontrolAdvancedStationValve、DrainStationValve、pressureSensor、explosion-proofAudible and Visual Alarm LampEtc.Components，OutputFactoryWhenalreadyManagementCommissioningPerfectComplete，OperateSimpleUnit。During use, the safety systems mainly include low-pressure alarm function, ultra-low-pressure protection function, and high-pressure protection function.。

Low-pressure alarm: When the pressure inside the cabinet is below 100 Pa, the explosion-proof audible and visual alarm light is interlockingly activated. At this time, on-site personnel need to investigate air source and inlet faults.。

Ultra-low pressure protection: If the fault cannot be handled in time and the pressure inside the cabinet continues to drop below 50Pa, the automatic control system will cut off the main power supply of the positive-pressure chamber, powering off before the explosion-proof integrity is lost to prevent an explosion.