HG/T 2145.2-1991 Glass-lined handhole with sight glass HG/T2145.2-1991 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
Glass Handholes
Handholes with sight glasses
Subject Content and Applicable Range
HG/ T 2145.2 --91
This standard specifies the design, basic parameters and dimensions, technical requirements, etc. of handholes with sight glasses for glass cutting equipment. This standard applies to handholes with glass sight glasses with nominal force less than or equal to 1.0 MFa and temperature between -20°C and 200°C.
2 Reference Standards
GB97.! Flat washer Grade A
GB 897 Stud tm=1d
GB5780 Hexagon head bolt Grade C:
GB5782 Hexagon head bolt Grade A and Grade B
GB 61701 Hexagon head bolt Grade A and Grade B
HG3501 Sight glass
ZBG94004 Technical specifications for glass removal equipment
HG/T2105 Looping method for glass shaking equipment
3 Types, basic parameters and sizes
3.1 Type. The parameters and dimensions of the whole book can be seen in Figure 1 and Table 1. Installation, China National Chemical Industry Ministry - Approval No. 1992-01-01 Implementation No. G/T 105 HG/T 2050 GB 6170 GB5782 GBG173 CB 9T1 HG/T 2050 G/T 2145.2 - Optimum performance test method Single-stage screw thread Mirror glass KTl1 350--10 or 2(1 270-500
Transformed material
2'35-A
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Sales service
Picking Jun glass
See size table
Nominal pressure PN
Nominal diameter
3.2 Marking example
HG / T 2145.2—91
Table 2 Size table
Tang glass with sight glass hand hole, nominal pressure PN is 1.0MPa, nominal diameter DN is 150mm, mark: with sight glass hand hole PN1.0 DN150HG/T 2145.2-914 Technical requirements
4.1 The cover shall be selected, manufactured, tested and accepted in accordance with Z Japanese G94004 and this standard. The screw
Reference weight
4.2 The allowable deviation of the chord length of two adjacent bolt holes and the true diameter between the centers of the bolt holes is ±0.6mm1m, and the deviation of the chord length of any two bolt holes shall not exceed ±1mm.
4.3 The gasket shall comply with relevant standards. The specific materials shall be in accordance with the technical requirements of the general drawing of the glass equipment where it is located. 4.4 After the glass belt sight glass hand hole is assembled, its water pressure test or air permeability test shall be carried out at the same time as the glass equipment where it is located. 5 Packaging, transportation and storage
5.1 The exposed glass surface should be firmly wrapped with soft objects and fixed firmly. 5.2 It must be forbidden to touch the value during moving and transportation, and the packaging box must not be inverted. 5.3 The product should be accompanied by a packing list, product certificate and product instructions. 5.4 The product should be stored inside and is not allowed to be exposed or stacked. Additional instructions:
This standard was proposed by China National Chemical Equipment Corporation. This standard was coordinated by the National Technical Committee for Glass Equipment Standardization and drafted by Shanghai Pharmaceutical Design Institute of the State Drug Administration. The main drafters of this standard are Hua Qiuyuan, Li Yijun, Bao Aiyuan, 152
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