HG/T 2055.2-1991 Glass-lined manhole with sight glass manhole HG/T2055.2-1991 standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
Glass Manhole
Manhole with Sight Glass
1 Subject content and scope of application
HG/T2055.2--91
This standard specifies the type, basic parameters, main dimensions and technical requirements of glass manhole with sight glass. This standard applies to glass containers with a nominal pressure less than or equal to 1.0MPa and a medium temperature higher than -20°C and lower than or equal to 200°C. This standard is generally used for glass containers that are not often opened and can be used as access holes or inspection holes for installation and maintenance. 2 Reference standards GB97.1 Flat washers, grade A GB5782 Hexagonal head bolts, grade A and B GB6170 Type 1 hexagonal nuts, grade A and B ZBG94004 HG/T2050 Technical conditions for glass equipment Gaskets for glass equipment HG/T2054 Clips for glass equipment HG/T2 143
Tang Glass Equipment Pipe
HG/T2144 Tang Glass Sight Glass
3 Types, basic parameters and dimensions
3.1 350×250, 400×300 Type I elliptical manhole with sight glass and protective ring, see Figure 1 and Table 1, Table 2.3.2 Φ450 Type I circular manhole with sight glass and protective ring, see Figure 2 and Table 1, Table 2.3.3 350×250, 400×300 Type II elliptical manhole with sight glass without protective ring, see Figure 3 and Table 3, Table 4.3.4 Φ450 Type II circular manhole with sight glass without protective ring, see Figure 4 and Table 3, Table 4.Approved by the Ministry of Chemical Industry of the People's Republic of China on July 6, 1991 and implemented on January 1, 1992
HG/T 2055.2--91
Surface glass
Axb
Cxd
HG/T2055.2—91
Surface glass
HG/T2144
HG/T2054
HG/T2050
HG/T2054
GB97.1, GB5782, GB6170
Nominal pressure PN
Nominal size
350×250
400×300
350×250
400x300
350x2 50
400×300
Nominal pressure.PN,MPaWww.bzxZ.net
HG/T2055.2--91
Table 1 Detailed list
Protective ring
Manhole quality
Washer, bolt, nut
Table 2 Dimension table
Nominal size,mm
350×250
400×300
350×250
400x300
350×250
400×300
Continued Table 2
Sight glass specifications
PN0.6DN100
PN 0.6DN125
PN 0.6DN125
PN0.6DN100
PN0.6DN125
PN0.6DN125
PN 1.0 DN 100
PN1.0DN 125
PN 1.0 DN 125
Assembly
10 or 08HT
10 or Q235-A
Assembly
①For manhole with protective ring, M12 clip should use extended type, DIAM12-1 or BM12-1 type. ② For manholes with nominal pressure PNO.6MPa and PN1.0MPa, A-type clamp 260 should be selected. According to the medium requirements, reference weight, kg. HG/T2055.2-91. Surface against glass. Excerpt axh. HG/T2055.2-91. Surface glass. HG/T2144. HG/T2054. HG/T2050. GB97.1, GB6782, GB6170. Nominal pressure PN. Nominal size. 350×250. 400×3 00
*350×250
400×300
3.50×250
400×300
Nominal pressure PN, MPa
HG/T2055.291
Details
Manhole cover
Washer, bolt, nut
Table 4 Dimension table
Nominal size, mm
350×250
400×300
350×250
400×300
350×250
400×300
Note: Manhole with nominal pressure of 0.6MPa should use Type A clip. Inch,
Assembly
10 or Q235-A
Assembly
Sight glass specifications
PN 0.6 DN 100
PN 0. 6 DN 125
PN 0.6DN 100
PN 0. 6 DN 125
PN0.6DN125
PN 1.0 DN 100
PN1.0 DN 125
PN 1.0 DN 125
According to the requirements of the medium
Tang glass
Reference weight, kg
3.5Marking
Marking example:
HG/T2055.2-91
Type I elliptical manhole with glass, sight glass and protective ring has a nominal pressure of PN1.0MPa and a nominal size of 400×300.Marking: Manhole IPN1.0-400×300HG/T2055.2—91Type II circular manhole with glass, sight glass and no protective ring has a nominal pressure of PN0.25MPa and a nominal size of @450.Marking: Manhole IIPN0.25-450HG/T2055.2—914 Technical requirements
4.1 Manhole covers and protective rings shall be manufactured, tested and accepted in accordance with the relevant provisions of this standard and 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 Manholes with sight glasses shall be subjected to water pressure test and air tightness test together with pond glass equipment, and 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 packaging shall be firmly fixed. 5.2 Collisions must be avoided during movement and transportation, and the packaging boxes 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 instructions:
This standard is proposed by China National Chemical Equipment Corporation. This standard is under the jurisdiction of the National Technical Committee for Standardization of Pond Glass Equipment. This standard was drafted by Shanghai Pharmaceutical Design Institute of the State Drug Administration, and the main drafters of this standard are Jiang Yanjun, Li Yijun and Hua Qiuyuan. From the date of implementation of this standard, the former standard HG5-273-79 "Oblong manholes for pond glass equipment" issued by the Ministry of Chemical Industry will be invalid.
This standard adopts the German national standard DIN28153-1983 "Cover plates for DN350×450, 500 and 600 openings on pond glass mixing vessels".
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