HG/T 21512-1995 Beam-type gas jet packing support plate HG/T21512-1995 Standard download decompression password: www.bzxz.net

Industry Standard of the People's Republic of China
Beam Type Gas Injection Packing Support Plate
Beam Type Gas Injection Packing Support PlateHG/T21512-95
Editor: Chemical Engineering Design Technology Center of the Ministry of Chemical IndustryApproval Department: Chemical
Implementation Date: March 1997Gansu
Engineering Construction Standards Editing Center of the Ministry of Chemical Industry
1 Subject Content and Scope of Application
1.0.1 This standard specifies the structural type, size, allowable load and manufacturing technical requirements of beam type gas injection packing support plates (hereinafter referred to as support plates). 1.0.2 This standard is applicable to random packing towers with a diameter of DN300~~4000mm. 1.0.3 Applicable temperature:
For stainless steel support plates, the use temperature is below 300℃; for carbon steel support plates, the use temperature is below 200℃. GB985
GB3280
GB11253
JB1119
JB1205
Cited standards
"Basic types and sizes of weld grooves for gas welding, manual arc welding and gas shielded welding""Cold-rolled stainless steel plates"
"Cold-rolled thin steel plates and strips of carbon structural steel and low-alloy structural steel""Clips"
"Technical conditions for tower trays"
3 Types and sizes
3.1 Diameter series
For DN≤1000mm, the diameter interval is 100mm; for DN>1000~4000mm, the diameter series shall be in accordance with the provisions of GB9019 "Nominal diameter of pressure vessels" standard.
3.2 Structural type of support plate
3.2.1 Waveform size of support plate (see Table 3.2.1). Table 3.2.1 Waveform size of support plate
400~800
900~4000
Waveform size
145×180
192X250
300×300
(See Figure 3.2.2-1~3)
Note: Dimension b is the width of the support plate in the middle of the tower (see the left figure in Table 3.2.1). The dimension b of the support plate at the edge of the tower (see the right figure in Table 3.2.1) will vary with the tower diameter and be asymmetric on the left and right. H is the wave height and t is the wave distance. 3.2.2 Support plates with DN≤1200mm may not be provided with edge rings (see Figure 3.2.2-1), while support plates with DN≥1300mm should be provided with edge rings (see Figures 3.2.2-2 and 3.2.2-3). 3.2.3 The supporting plate is assembled from multiple beam-type supporting plates and is a detachable structure. Its structural type is shown in Figures 3.2.2-1 to 3.2.2-3, and its structural dimensions are shown in Table 3.2.3. 3
Intermediate supporting plate
Edge supporting plate
Supporting ring
Supporting rib plate
Edge supporting plate
Supporting ring
Connecting plate
Main supporting plate
Supporting rib plate
Supporting ring
Edge supporting plate
Middle supporting plate
Connecting bolts
Figure 3.2.2-1D N3001200mm supporting plate structure schematic diagram clip
connecting bolt
Figure 3.2.2-2DN1300~2500mm supporting plate structure schematic diagram intermediate supporting plate
connecting bolt
Figure 3.2.2-3DN2600~4000mm supporting plate structure schematic diagram edge ring
supporting plate
Table 3.2.3 Supporting plate structure dimensions
Supporting plate
Number of blocks
Main support
【丨Supporting ring
Supporting ring
Connecting clip
HG/T 21512.100-95
Clip 10
(See Appendix A for dimensions)
HG/T 21512.101-95
Clip 110
(See Appendix A for dimensions)
JB 1119-81
Clip K10B
JB 1119-81
Clip K14B
3.2.4 The support plate and the support ring on the tower body are fixed with clips, see Figure 3.2.4-1 to Figure 3.2.4--3.
Support plate
Support ring
Figure 3.2.4-1Connection form of DN300mm support plateSupport plate
Support ring
Figure 3.2.4-2Connection form of DN400～700mm support plate6
Support plate
Support ring
Figure 3.2.4-3Connection form of DN800~~4000mm support plateNote: The dimensions in the figure are in mm; H-
Total height of clip·h—thickness of support ring.
3.2.5When the tower diameter DN≥2600mm, the main support beam shall be set at the bottom of the support plate. The positioning dimensions of the clips on both sides of the main support beam are shown in Table 3.2.5 and Figure 3.2.5. Table 32.5 Clip positioning dimensions
Note: *No clips are set on both sides of the main support beam. Positioning dimension A””
*A (see Figure 3.2.5) is given. The width B of the main supporting beam should take into account the installation of the clip in hole 14
Main supporting beam
Figure 3.2.5 Clip positioning dimension
In the figure: A---Clip positioning dimension, mm: B--Main supporting beam width, mm. 3.2.6 The main supporting beam is set under the DN2600~4000mm supporting plate. Its reference dimensions are shown in Appendix B in Appendix B.
Characteristics of the supporting plate (see Table 3.2.7).
Table 3.2.7 Characteristics of bearing plate
DN(mm)
Free section
Allowable load of bearing plate N
Stainless steel
114490
106810
102120
102120
117530
115270
113470
116110
114500
113150
112000
111000
110140
109380
Diameter "Free section
DN(mm)
For the calculation method of the opening ratio of the supporting plate, see Appendix C. %bzxz.net
Allowable load of the supporting plate N
373110
369175
365820
362915
360385
369235
358155
356180
354410
Stainless steel
108700
108100
107560
107070
106630
106230
105860||tt| |450470
445720
441670
433160
435110
433720
432420
430030
427900
The materials of the supporting plate are Q235-A and 0Cr19Ni9. Their codes are as follows: Material code
Material grade
Q235-A
OCr19Ni9
Material code
5 Technical requirements
5.1 Manufacturing requirements
In addition to meeting the technical requirements of the design documents, the manufacturing of the supporting plate must strictly follow the requirements of the supporting plate. The "technical requirements" of the bearing plate refer to the standard drawing (i.e. construction drawing) for manufacturing and inspection. Assembly requirements
The bearing plate should be pre-assembled as a whole at the manufacturer, and the flatness tolerance after assembly should be less than or equal to 2mm.
5.3 Installation requirements
5.3.1 Before installing the bearing plate, the oil stains, rust, etc. on its surface should be removed. 5.3.2 Positioning of the main supporting beam assembly: The center line of the beam should pass through the cross-sectional center of the tower body at this location, and its deviation should not exceed ±2mm.
5.3.3 After the main supporting beam is installed, its upper surface and the upper surface of the supporting ring should be on the same horizontal plane, and the horizontality deviation of the plane should be less than or equal to 2mm.
6 Marking
6.1 Marking method
HG/T X.XXX×.×.X-XX
LQPZ-X XX XX
Support plate material
Tower diameter, mm
Abbreviation of beam-type gas jet packing support plate Year
Standard sequence number
Standard number
Marking example
The tower diameter is 800mm, and the beam-type gas jet packing support plate made of 0Cr19Ni9. material is marked as:
HG/T21512.38-95
LQPZ—800-- 1
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