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