HG/T 2055.4-1991 Glass-lined manhole with sight glass and balancer manhole HG/T2055.4-1991 standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
Pond glass manhole
Manhole with sight glass and balancer
1 Subject content and scope of application
HG/T2055.4-
This standard specifies the type, basic parameters, main dimensions and technical requirements of pond glass manholes with sight glass and balancer. This standard is applicable to pond glass containers with a nominal pressure less than or equal to 1.0MPa and a medium temperature higher than -20℃ and lower than or equal to 200C
This standard is generally used for pond glass containers that are frequently opened and can be used as access holes or inspection holes for installation and maintenance. Reference standards
GB97.1 Flat washers, grade A
GB5782 Hexagonal head bolts, grade A and B
Type 1 hexagonal nuts, grade A and B
GB6170
ZBG94004E
Technical conditions for sugar glass equipment
HG/T2050
HG/T2054
Gaskets for sugar glass equipmentWww.bzxZ.net
Clips for sugar glass equipment
HG/T2143
Nozzles for sugar glass equipment
HG/T2144
Glass sight glass| |tt||3'Type, basic parameters and dimensions
3.1350×250, 400×300 elliptical manhole with sight glass and balancer see Figure 1 and Table 1, Table 2.3.2·@450 round manhole with sight glass and balancer see Figure 2 and Table 1, Table 2, approved by the Ministry of Chemical Industry of the People's Republic of China on July 6, 1991112
1992-01-01 implementation
HG/T2055.4-91
Surface tear glass
Olive round axb
National exa
A rotation
HG/T20 55.4—91
Surface photography
Nominal pressure PN
Standard number
HG/T2144
HG/T2054
HG/T2050
HG/T2054
Nominal size
350×250
400×300
350×250
400×300
350×250
400×300
Nominal pressure PN, MPa
HG/ T2055.4—91
Protective ring
Manhole benefit
Balancer
Details
Table 2 Dimensions
Nominal dimensions, mm
350×250
400×300
350×250
400×300
350×250
400×300
Continued Table 2
Sight glass specifications
PN0.6DN100
PN0.6DN125
PN 0.6 DN 125
PN 0.6 DN 100
PN 0. 6 DN 125
PN 0.6DN125
PN 1.0DN100
PN 1.0DN125
PN 1. 0 DN 125
Assembly
10 or 08HT
10 or Q235-A
Assembly
Calculated value of gravity moment of manhole cover, Nm
①For manhole with protective ring, M12 clip should be extended type, i.e. AM12-I or BM12-I type. ② For PN0.6MPa and PN1.0MPa manholes, A-type clips should be used.
According to the medium requirements
According to the glass
Reference weight, kg
3.3 marking
Marking example:
HG/T2055.4-
Pond glass with sight glass and balancer elliptical manhole nominal pressure PN1.0MPa, nominal size 400×300 marking: manhole PN1.0-400×300HG/T2055.4—91Pond glass with sight glass and balancer round manhole nominal pressure PN0.25MPa, nominal size @450 mark: manhole PN0.25-450 HG/T2055.4-914 Technical requirements
4.1 Manhole covers and protective rings shall be manufactured, tested and accepted in accordance with this standard and the relevant provisions of ZBG94004. 4.2 Gaskets shall comply with HG/T2050, and gasket materials shall comply with the requirements of the general drawing of pond glass equipment. 4.3 Clips and hooks shall comply with HG/T2054.4.4 After the manhole with sight glass and balancer is assembled, it should be easy and flexible to open, and the cover can stop at any position within the range of 0°105°.
4.5 The manhole with sight glass and balancer is subjected to water pressure test and air tightness test together with the pond glass equipment. The test pressure and air tightness requirements shall comply with the requirements of the general drawing of the pond glass equipment.
5 Packaging, transportation and storage
5.1 The exposed pond glass surface shall be wrapped with soft materials and the packing shall be firmly fixed. 5.2 Magnetic collision must be avoided during moving and transportation. The packaging box shall not be inverted. 5.3 The product shall be accompanied by a packing list, product certificate and product instruction manual. 5.4 The product shall be stored indoors and shall not be stored or stacked in the open air. Additional notes:
This standard is proposed by China National Chemical Equipment Corporation and is under the jurisdiction of the National Technical Committee for Standardization of Weighing Glass Equipment. This standard was drafted by the Shanghai Pharmaceutical Design Institute of the State Drug Administration. The main drafters of this standard were Jiang Yanjun, Li Yijun and Hua Qiuyuan. This standard refers to the German national standard DIN28153-1983 "Cover plates for DN350×450, 500 and 600 openings on pond glass mixing vessels".
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