HG/T 2731-1995 Hot Alkali Pump Quality Classification Rules HG/T2731-1995 Standard Download Decompression Password: www.bzxz.net
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Chemical Industry Standard of the People's Republic of China HG/T2731-—95 Quality classification of hot alkali pumps 1995—0705 Issued Ministry of Chemical Industry of the People's Republic of China Precision network change.baonno.con1996—0301 Implementation Chemical Industry Standard of the People's Republic of China Quality classification of hot alkali pumps Subject content and scope of application This standard specifies the quality classification of single-stage and two-stage centrifugal hot alkali pumps. This standard is applicable to single-stage and two-stage centrifugal hot alkali pumps for petrochemical industry with a delivery temperature not exceeding 120℃. 2 Reference standards GB32142 Determination method of flow plate of water pump GB3215 General technical requirements for centrifugal pumps for refinery, chemical and petrochemical processesGB3216 GB10889 GB10890 Test methods for centrifugal pumps, mixed flow pumps, axial flow pumps and vortex pumpsMethods for measuring and evaluating vibration of pumps Methods for measuring and evaluating noise of systems GB/T13006 GB/T13007 GB/T13384 HG/T2388 JB3329 JB3330 JB4 297 Cavitation of centrifugal pumps, mixed flow pumps and axial flow pumpsEfficiency of centrifugal pumps General technical conditions for packaging of electromechanical products General rules for quality or classification of steel pressure vessels Static balance standard for rotating parts of steam turbines Dynamic balance standard for rigid rotors of steam turbines Technical conditions for painting of pump products JB/T6881 JB/T6882 Pump reliability determination test Pump reliability verification test JB/T6913 Pump product cleanliness 3 Grading principles 3.1 The quality classification method of hot alkali pumps shall comply with the provisions of Chapter 4 and Chapter 5 of HO/T2388. 3.2 Based on drawings and GB, 3215, classification and grading shall be carried out according to structural characteristics and quality characteristics of the manufacturing process. 4 Classification rules 4.1 The material part shall comply with the provisions of Table 1. 4.2 The machined part shall comply with the provisions of Table 2, 4.3 The assembly and accessories shall comply with the provisions of Table 3. 4.4 The performance test and acceptance part shall comply with the provisions of Table 4. 4.5 Paint, packaging and factory documents shall comply with the provisions of Table 5. Approved by the Ministry of Chemical Industry of the People's Republic of China on July 5, 1995. HG/T2731-85 Implementation on March 1, 1996 Quality characteristics Main stud Main nut Bearing box Quality certification characteristics Impeller static balance Rotor dynamic balance test Shelling water pressure test Main bolt Main nut Bearing box Sealing surface quality inspector Non-destructive inspection of parts HG/T273195 Table" Materials Quality certification characteristics Quality characteristic indicators (1) Materials (including substitutes) conform to drawings, GB3215(2) Re-inspect according to relevant material standards (3) Materials and rough parts should have certificates or inspection reports Table 2 Machining Quality certification characteristics Quality disc characteristic indicators Conform to drawings, GB3215 regulations Comply with drawings, GB3215, JB3329 regulationsComply with drawings, GB3215 regulations Comply with drawings, GB3215, B3330 regulations Comply with drawings, GB3215 regulations Standard investment network m.ba8080:cco. Various standards industry information science and technology first download level Inspection method Verify the actual object and the certificate Inspection method Inspect the certificate or Actual measurement Quality characteristics Clearance between impeller and pump body seal Clearance between impeller and pump cover seal Clearance between shaft sleeve and throttle ring Impeller seal ring outer circle runout Shaft sleeve outer circle runout Main purchased accessories Main self-made accessories Cleanliness Quality characteristics Operation test Bearing temperature Lubricating oil leakage Leakage of plate seal HG/T 2731-—95 Table 3 Assembly and accessories Quality characteristics Quality benefit characteristics Quality pending indicators (1) Meet the requirements of Class B (2) After the whole machine is assembled, it can guarantee that the user can Assembly (including small assembly of components, installation of pipelines, assembly of the whole machine, etc.) should comply with drawings, GB3215 regulations Comply with drawings, GB3215 regulations Comply with drawings regulations (I) Meet the requirements of Class B (2) Have a purchase manual Have a complete quality disk qualification certificate from the manufacturer Have complete design, test data and qualification certificate Bearing oil chamber and lubrication The internal cleanliness of each component of the sliding system (such as oil tank, pipeline, etc.) shall comply with the provisions of JB/T6913 Table 4 bzxz.net Performance test and acceptance Quality characteristic index The operation of the pump shall comply with the requirements of the drawings and GB3215 and reach the B level requirements in GB10889 The pump unit shall comply with the B level requirements in GB10890 Comply with the drawings and GB3215 No leakage or mist spray is allowed When the specification is <50mm When the specification is <50mm When the specification is ≥50mm ≤3 ≤3 When the specification is ≥50mm (1)The parameters shall comply with the requirements of the drawings and reach GB 10889 Class C regulations The pump unit complies with GB10890Class C regulations When specification <50mm When specification ≥50mm (2)Should comply with GB3214, GB3216Class C regulationsStandards for transformer network W Inspection method Inspection certificate Or actual measurement Inspection certificate Inspection certificate Or actual measurement Inspection method Inspection certificate Or actual measurement Inspection certificate Visual inspection Inspection certificate Or actual measurement Quality characteristics Cavitation residual Embeddability Quality characteristics Paint, appearance Protection of machined surface Nameplate, logo Factory technical documents Quality characteristics HG/T2731-95 Continued Table 1 Quality characteristics index (1) The design point efficiency of single-stage double-suction pump is not lower than (1) The design point efficiency of single-stage double-suction pump is c design point efficiency, c is GB/T13007 level index plus 5% (2) The design point efficiency of two-stage pump is C level The design point efficiency is C level The index plus 3% Indicator plus 1.5% The above efficiency difference is not The above efficiency difference is not Lower than the provisions of class bLower than the provisions of class c Conform to the drawing or GB/T13006 When the order requires regularity measurement, it shall conform to the drawing and JB/T6881 Table 5 Paint, packaging and factory documents Quality characteristics 5 Quality grade assessment of hot alkali pump Quality characteristic indicators Conform to the drawing, GB3215 and JB4297Conform to the drawing, GB3215 regulations Conform to the drawing, G According to the requirements of B3215 and GB/T13384, the drawings shall be met, and the requirements of GB3215 and GB/T13386 shall be met, and the drawings shall be met, and the requirements of GB3215 shall be met Inspection method Inspection certificate Or actual measurement Check the certificate or verify according to JB/T6882 Inspection method Check the object Inspection certificate According to the quality inspection results of the hot alkali pump, fill in the inspection summary table according to Table B2 of HG/T2388, and compare the item rate in Table B2 with Table 3 of HG/T2388 to determine the quality level of the hot alkali pump. The content and format of the quality level assessment certificate of the hot alkali pump shall be in accordance with the provisions of Table B3 of HG/T2388, with additional instructions: This standard is proposed by China National Chemical Equipment Corporation. This standard is under the jurisdiction of the Chemical Machinery and Equipment Standardization Technical Unit of the Ministry of Chemical Industry and the China Chemical Equipment Association. This standard was drafted by the Chemical Machinery Plant of Nanjing Chemical Industry (Group) Corporation. The main drafters of this standard are Ding Kun and Zhang Dongqin. Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.