HG/T 2125-1991 Technical Specifications for Turbine Agitators HG/T2125-1991 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
Technical Conditions for Turbine Agitators
1 Subject Content and Scope of Application
This standard specifies the requirements for the manufacture, inspection, packaging and transportation of turbine agitators. This standard applies to steel welded turbine agitators. 2 Reference Standards
Technical Conditions for High-Quality Carbon Structural Steel
GB 983bzxz.net
GB 985
GB:1095
Carbon Structural Steel
Stainless Steel Welding Rods
Basic Types and Dimensions of Welded Joints for Manual Arc Welding
GB 1220
Stainless Steel Welding Rods
GB 18a1
GB 1804
GB 3274
GB3280
GB 5117
GB 5118
Tolerance and fit. Size to 500m Tolerance zone and fit of hole and shaft Tolerance and fit: Limit deviation of dimension without tolerance Carbon structural steel and low alloy structural steel Hot thick steel plate and steel strip Stainless steel cold rolled steel plate
Carbon steel welding rod
Low alloy steel welding rod
HG/T2123 Type and main parameters of agitator 3 Type and main parameters
The type and main parameters of the impeller agitator shall comply with the provisions of HG/T2123. 4 Technical requirements
HG/T 2125 -- 91
4.1 The material selection of impeller blades, rings and sleeves Carbon steel shall comply with the provisions of GB3274, GB700 and GB699; the selection of stainless steel shall comply with the provisions of GB3280 and GB1220: The material of fasteners shall comply with the drawings and corresponding standard requirements. 4.2 The coating of the agitator shall meet the corresponding technical requirements. 4.3 The welding between the blades, discs and sleeves shall be continuous welding, and the type and size of the welding joint shall comply with the provisions of GB985: the welding rod shall comply with the provisions of GB5117, GB5118 and GB983, 4.4 The blades of the open turbine agitator shall be perpendicular to the axis of the shaft hole: the disc surface of the national disc turbine agitator shall be perpendicular to the axis of the shaft hole; the verticality tolerance is 0.2% of the agitator diameter and shall not exceed 3mm. The limit deviation of the shaft hole shall comply with the H8 level of GB.1801, and the surface roughness Ra of the shaft hole shall not exceed 3.2μm.
4.5. The limit deviation of the diameter and blade length of the agitator shall comply with the 14th grade accuracy of GB1804; the limit deviation of the unfilled tolerance size of the machined surface shall comply with the 14th grade precision: the limit deviation of the unfilled tolerance size of the non-machined surface shall comply with the 16th grade accuracy. 4.6 The keyway size and deviation of the agitator shaft sleeve shall comply with the provisions of GB1095, and the keyway width shall be D18 or JS9. Approved by the Ministry of Education of the People's Republic of China on August 19, 1992-01-01, HG / T 2, 4-91, which shows that the agitator surface should be free of sharp edges and burrs, and the blades should be flat. Balance of this impeller agitator
4.8,1 When the blade tip linear velocity v<5 m/s, static balance test may not be performed, and the blades and disks and other parts should be welded symmetrically to reduce unbalanced weight. When the linear velocity is 5 m/s, static balance or dynamic balance test is required: when the agitator shaft is a flexible shaft, dynamic balance test must be performed
48.2 Balance accuracy grade G, Yuan Table 1.
Product (equipment power), MPa
n (agitator shaft speed). r/min
Non-pressure container or pressure generator. ,[
A vacuum device
P-0. 1~0.6
P=0. 1~e. 6
0. 6αP≤1. 6
0.6
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.