This standard is applicable to steel fixed thin tube sheet shell and tube heat exchangers with a nominal heat exchange area of ​​1.0m2 to 365m2 and a nominal pressure of 0.6 to 2.5MPa. HG 21503-1992 Steel fixed thin tube sheet shell and tube heat exchanger HG21503-1992 Standard download decompression password: www.bzxz.net

Industry Standard of the People's Republic of China
Steel Fixed Thin Tube Sheet Shell and Tube Heat Exchanger
HG21503-92
Editor:
Approving Department:
State Drug Administration Shanghai Pharmaceutical Design Institute Chemical
Xueyi Engineering
Engineering Construction Standard Editing Center of the Ministry of Chemical Industry
1992 Beijing
Subject Content and Scope of Application
Cited Standards
Basic Parameters
Other Structures
Model and Representation Method
Installation Dimensions of Heat Exchanger
Manufacture and Acceptance
Installation, Commissioning and Maintenance.
10 Selection Instructions
Appendix A
Subject List
Order Conditions for Thin Tube Plate Heat Exchangers
Clause Explanation
1 Subject Content and Scope of Application
This standard specifies the type, main parameters, structural dimensions, manufacturing, selection and installation requirements of steel fixed thin tube plate shell and tube heat exchangers. This standard is applicable to steel fixed thin tube plate shell and tube heat exchangers with a nominal heat exchange area of ​​1.0m2~365m2 and a nominal pressure of 0.6~2.5MPa. GB150
GB1804
GB3323
JB/T 4712
Cited standards
《Pressure Vessels》;
《Tolerances and fits - Limit deviations of dimensions without tolerances:《Stainless steel seamless pipes》;
《Radiography and quality grading of sawn fusion welded butt joints》;《Seamless steel pipes for conveying fluids》
《Connection dimensions and sealing surface dimensions of steel pipe flange types》;《Product label》;
《Test methods for mechanical properties of welded joints of pressure components of boilers》;《Painting, packaging and transportation of pressure vessels》;《Classification and technical conditions of flanges for pressure vessels》;《Ear support》:
《Saddle support》.
3 Type
Structural type
3.1.1 Welding type, that is, the tube sheet is welded to the cylinder below the flange sealing surface (see Figure 3.1.1).
Face-mounted type, that is, the tube sheet is attached to the flange sealing surface (see Figure 3.1.2). 3.1.2
3.2 Installation type
Single pipe pass (welding type, see Figure 3.2.1.1-8: face-mounted type, see Figure 3.23. 2.1. 1
1.1-b).
: 1———pipe, 2—gasket, 3—tube sheet, 4—simplified body; 5—ear support, 6—tie rod, 7—heat exchange tube: 8—exhaust port,
9—gasket: 10—
head; 11—equipment flange; 12—shell pipe; 13—baffle or support plate 14—saddle support; 15—drainage! 16—stud and nut: 17—partition, 18—pipe release pipe. 4
Figure 3.2.1.1-
3. 2. 1. 1-b
3.2.1.2 Double pipe pass (welded type, see Figure 3.2.1.2-&, veneer type see Figure 3.21.2-b).
Single pipe pass (welded type, now Figure 3.2.2.1-a veneer type. See Figure 3.23.2.2. 11
2.1-b). bZxz.net
Figure 3. 2.1. 2-a
Figure 3.2.1.2-b
Figure 3. 2.2. 1a
3.2.2.2 Double pipe pass (welded type, see Figure 3.2.2.2-a; veneer type, see Figure 3.2.2. 2-b).
Figure 3.2.2.1-b
Figure 3. 2. 2. 2-8
Figure 3.2.2.2-b
Heavy sleeve type (welded type, see Figure 3.2.3-a: veneer type, see Figure 3.2.3-b). Figure 3.2.3
Figure 3.2.3-b
level).
Basic parameters
4.1 Nominal pressure (PN)
Nominal pressure is divided into four levels: 0.6, 1.0, 1.6, and 2.5 MPa (vacuum is 1.0 MPa4.2 Nominal diameter (DN)
Nominal diameter is divided into 150, 200, 250, 300, 400, 500, 600, 700, 800, 900, and 1000 mm, a total of ten specifications.
4.3 Design temperature
4.3.1 The design reference temperature is 200℃. The maximum allowable working pressure at each temperature is specified in Table 4.3.1.
4.3.2 The minimum operating temperature is greater than -20℃, and the maximum operating temperature is 350℃ . 4.4 Nominal heat transfer area (FN)
The heat transfer area of ​​this standard is based on the outer diameter of the heat exchange tube. 4.4.1
4.4.2 The nominal heat transfer area of ​​this standard is the rounded value of the calculated area. The nominal heat transfer area is 1.0m2~365m2, see Table 4.4.2.9
Material category
Carbon steel
Austenitic stainless steel
Carbon steel
·Austenitic stainless steel
Carbon steel, low alloy steel
Austenitic stainless steel
Carbon steel, low alloy steel
Austenitic stainless steel
Design temperature
Maximum allowable working pressure (MPa)
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