HG 21591.1-1995 Sight glass plate liquid level gauge (normal pressure) HG21591.1-1995 standard download decompression password: www.bzxz.net

Mirror glass plate liquid level gauge
HG 2159195
Mirror glass plate liquid level gauge (normal pressure)
HG 21591.1---95
1 Subject content and scope of application
1.0.1 This standard specifies the type, size, technical requirements and instructions for use of mirror glass plate liquid level gauges. There are six types of mirror glass plate liquid level gauges (normal pressure). The design temperature should be less than or equal to 250℃. It is only used for normal pressure (0.00.1MPa). The corrosion allowance is specified in Table 1.0.1.
Table 1.0.1 Corrosion allowance
Carbon steel I (16MnR)
Stainless steel straight (0Cr18Ni9)
Carbon steel straight (16MnR with lining)
Carbon steel (Q235-A)
Stainless steel (OCr18Ni9)
Carbon steel summer (Q235A with lining)
Corrosion allowance (mm)
Referenced standards
HG21588-95 "Standard series and technical requirements for glass plate liquid level gauges" 44
3 Structural types, basic parameters and dimensions
3.0.1 The structural types and dimensions of this standard are shown in Figures 3.0.11 to 3.0.1-5 and Table 3.0.1.
Specifications, basic parameters and dimensions of sight glass plate liquid level gauge (normal pressure) 3.0.1
Marking regulations
Liquid level gauge SIJ
Liquid level gauge S—IJ
Liquid level gauge SI
Liquid level gauge S—IQ
Liquid level gauge SIQ
Liquid level gauge SIQ
Transparent size
(mmXam)
304×18
304×18
304×18bzxz.net
304×18
304X18
Standard drawing (i.e. construction drawing) drawing number
HG 21591.1-95-1
HG 21591.1—95-2
HG 21591.1--95—3
HG 21591. 1-95—4
HG 21591. 1--95—5
HG 21591.1---95—6
The glass plate shall be in accordance with QB776-80 "Glass plate and glass tube for liquid level gauge", 3. 0.2
Specification number is R320.
Figure 3.0.1—1
Glass plate
S1J type sight glass plate liquid level gauge structure diagram 6
Figure 3.0.1—
Glass plate
I:J type sight glass plate liquid level gauge structure diagram 6
Figure 3.0.1-3
Glass plate
Heavy J type sight glass plate liquid level gauge structure diagram 6
.0 type sight glass plate liquid level gauge structure diagram S- I0.$--
Glass plate
S-IQ type sight glass plate liquid level gauge structure cylinder diagram Figure 3.0.1-5
Glass plate
4 Technical requirements
4.0.1 Technical requirements shall comply with the relevant provisions of HG21588-95 "Glass plate liquid level gauge standard series and technical requirements". 4.0.2 Carbon steel band type lining is carried out with the equipment. The lining material is the same as the lining material of the equipment.
5 Selection regulations
Marking regulations and examples shall comply with the relevant provisions of HG21588-95 standard.
5.0.2 The various specifications of liquid gauges in this standard shall be selected according to Table 3.0.1 and indicated in the details column of the equipment assembly drawing.
5.0.3 The designer can change the material of the gasket (item number 4) and the length L of the neck (item number 7), but it should be stated on the equipment assembly drawing. The changed gasket material is limited to the material with the parameters of specific pressure Y less than or equal to 25.5MPa and gasket coefficient m less than or equal to 2.75. 5.0.4 The neck (item number 7 in Figure 3.0.1-1~~3) cannot be used as a reinforcement part for the container opening.
5.0.5 In order to reduce welding deformation, the size of the fillet weld between the edge (item number 1 in Figure 3.0.1-3 and Figure 3.0.1--4) and the container wall should be minimized. 52
Additional Notes
Proposing unit, chief editor
and main drafters of this standard
Proposing unit:
Equipment Design Technology Center of Ministry of Chemical Industry
Chief editor: China Huanqiu Chemical Engineering Company Main drafters
Compiler: Qiu Wenbing
Checker: Liu Menglin
Auditor: Xue Tijun
Wo Xianglin
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