HG/T 2048.1-1991 Glass-lined stuffing box HG/T2048.1-1991 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
Tang Glass Stuffing Box
Subject Content and Scope of Application
This standard specifies the type, basic parameters, main dimensions and technical requirements of Tang Glass Stuffing Box, HG/T2048.1-91
This standard applies to the sealing device of the stirring shaft of Tang Glass equipment with a nominal pressure less than or equal to 0.25MPa, and is applicable to medium temperatures of 0℃ to 100℃ and shaft line speeds less than 1m/s. This stuffing box is not suitable for media with extremely, highly and moderately toxic levels. bZxz.net
2 Reference standards
GB899 Double-headed stud b=1.5d
GB61701 Hexagonal nut
EA grade and B grade
JB6414 Casting size tolerance
JC341 PTFE asbestos packing
ZBG33003 PTFE rod
ZBG94004, Tang glass equipment technical conditions 3 Type, basic parameters and main dimensions
Structural type, basic parameters and main dimensions are shown in Figure 1, Table 1 and Table 2. Approved by the Ministry of Chemical Industry of the People's Republic of China on July 6, 1991 and implemented on January 1, 1992
HG7T 2048.1
Lubricant injection
Glass layer
Sealing surface
Nominal diameter
Standard number
ZBG33003
GB6170
160(h8)
190(h8)
210(h8)
240(h8)
265(h8)
320(h8)
320(h8)
375(h8)
Note: d is the size of the iron after machining, 3.2 mark
Marking example:
HG/T 2048.1—91
Stud
Details
See Table 2
See Table 2
Table 2 Size Table
PTFE Asbestos
Q235-A
Flange Bolt Hole
Nominal pressure PN0.25MPa, nominal diameter DN50mm pond glass stuffing box, mark: stuffing box PN0.25DN50HG/T2048.1-914 Technical Requirements 4.1 The dimensional tolerance of cast iron parts shall be in accordance with GB6414. 4.2 The verticality of the sealing surface of the box flange to the axis shall be less than 4/1000 of its outer diameter. Prepare
or glass cast iron
or flexible graphite packing
gland bolts
reference weight
4.3 The limit deviation of the center circle diameter of the stuffing box flange bolts and the chord length of two adjacent bolt holes is ±0.6mm; the limit deviation of the chord length of any two bolt holes is ±1mm.
4.4 The box body shall be manufactured, tested and accepted in accordance with this standard and ZBG94004. 4.5 When installing the packing, it shall be compressed layer by layer. HG/T2048.1—91
4.6 After the packing box is assembled, it shall be subjected to a water pressure test or an operation air tightness test together with the sugar glass equipment. The test pressure and tightness requirements shall comply with the requirements of the general drawing of the sugar glass equipment. 4.7 Lubricant shall be filled in the gland oil groove, and the lubricant used shall not affect the medium in the container. 4.8 According to the requirements of the medium, polytetrafluoroethylene fiber braided packing, packing impregnated with special lubricant, flexible graphite packing or other soft packing shall be selected, but the name of the packing material shall be indicated on the general drawing of the sugar glass equipment. 4.9 The box flange is connected to the pipe mouth slip-on flange of the equipment, and the connection size is in accordance with the provisions of HG/T2105PN0.6MPa. The nominal diameter of the stuffing box corresponding to the nominal diameter of the slip-on flange is in accordance with Table 3. Table 3
Stuffing box DN
Lip-on flange DN
5 Packaging, transportation and storage
5.1 The exposed glass surface is wrapped with soft objects and firmly fixed in the packaging box. 5.2 Magnetic collision must be avoided during movement and transportation, and the packaging box is not allowed to be inverted. 5.3 The product should be accompanied by a packing list, product certificate and product instruction manual. 5.4 The product should be stored indoors: It is not allowed to be stored or stacked in the open air. Additional instructions:
This standard was proposed by China National Chemical Equipment Corporation, and this standard is under the jurisdiction of the National Glass Equipment Standardization Technical Committee. This standard was drafted by the Shanghai Pharmaceutical Design Institute of the State Drug Administration. The main drafters of this standard are He Weiliang, Li Yijun and Bao Aiyuan. 95
From the date of implementation of this standard, the former standard HG5-274-79 "Gasket Sealing Box for Glass Equipment" issued by the Ministry of Chemical Industry of the People's Republic of China shall be invalidated.
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