HG/T 2048.2-1991 Stuffing box with cooling water jacket HG/T2048.2-1991 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
With Cooling Water Jacket
Subject Content and Scope of Application
Stuffing Box
HG/T2048.2-91
This standard specifies the type of pond glass stuffing box with cooling water jacket. Basic parameters, main dimensions and technical requirements. This standard is applicable to the sealing device of the stirring shaft of pond glass equipment with a nominal pressure less than or equal to 0.25MPa, and is applicable to medium temperatures above 100C and less than or equal to 200℃ and shaft speed less than or equal to 2m/s. This stuffing box is not suitable for flammable and extremely, highly and moderately toxic media.
Reference standards
GB899 Double-headed stud bm=1.5d
GB1235'O-shaped rubber sealing ring
GB61701 Hexagonal nut grade A and grade B
GB6414: Casting size tolerance
JC341 PTFE asbestos packing
ZBG33003 PTFE rod
ZBG94004 According to glass equipment technical conditions www.bzxz.net
3 Type, basic parameters and dimensions
3.1 Structural type, basic parameters and dimensions are as specified in Figure 1, Figure 2 and Table 1, 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
HG/T2048.2-91
DN≤80
Lubricant injection
Remove glass layer
Sealing surface
HG/T 2048.2--91
Lubricant injection
Glass layer
Sealing surface
Nominal diameter
Standard number
ZBG33003
GB1235 (reference)
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 marking
Marking example:
HG/T2048.2--91
Water jacket
O-ring
Stud
Details
See Table 2
See Table 2
Table 2 Size table
125×3
Q235-A
Q235-A or 10
PTFE asbestos
Rubber Ⅱ-1
Soft rubber||t t||Q235-A
Q235-A
Flange bolt hole
Nominal pressure PN0.25MPa, nominal diameter DN50mm with cooling water jacket pond glass stuffing box mark: stuffing box PN0.25DN50HG/T2048.2-9114
Or glass cast iron
Or flexible graphite stuffing
Gland bolt
Reference weight
4 Technical requirements
4.1 Cast iron size tolerances shall comply with GB6414 HG/T2048.2-91||t t||4.2 The verticality of the sealing surface of the box flange to the axis should be less than 4/1000 of its outer diameter. 4.3 The limit deviation of the bolt center circle diameter and the chord length of two adjacent bolt holes of the stuffing box flange is ±0.6mm; the limit deviation of the chord length of any two bolt holes is ±1.0mm.
4.4 The box should be manufactured, tested and accepted in accordance with this standard and ZBG94004. 4.5 When installing the stuffing, it must be tightened layer by layer. 4.6 After the stuffing box is assembled, it must be subjected to a water pressure test or an operating air tightness test together with the glass equipment. The test pressure and tightness requirements shall be in accordance with the requirements of the general drawing of the glass equipment in the pond. 4.7 Lubricant should be filled in the gland oil groove. The lubricant used should not affect the medium in the container. 4.8 According to the requirements of the medium, select polytetrafluoroethylene fiber woven packing, packing impregnated with special lubricant, flexible graphite packing or other soft packing, but the name of the packing material should be indicated on the general drawing of the pond glass equipment. 4.9 The box flange is connected to the pipe mouth slip-on flange of the equipment. 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
Loop flange DN
5 Packaging, transportation and storage
5.1 The exposed pond glass surface should be wrapped with soft objects and firmly fixed in the packaging box. 5.2 Collision must be avoided during moving and transportation. The packaging box must not be inverted. 5.3 The product should be accompanied by a packing list, product certificate and product instruction manual. 5.4 Products should be stored indoors and should not be stored or piled outdoors. Additional notes:
This standard was proposed by China National Chemical Equipment Corporation. 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, Bao Aiyuan 95
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