NB/T 47004.1-2017 (NB/T 47004-2009) PDF English
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NB/T 47004-2009: Plate heat exchangers---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/NBT47004-2009
J75 NB
PROFESSIONAL STANDARD OF
THE PEOPLE’s REPUBLIC OF CHINA
NB/T 47004-2009 (JB/T 4752)
Plate Heat Exchangers
(ISO 15547-1. 2005, Petroleum, Petrochemical and Natural Gas
Industries Plate-type Heat Exchangers Part 1 Plate-and-frame Heat Exchangers,
MOD)
Issued on December 01, 2009 Implemented on May 01, 2010
Issued by the National Energy Board
Table of Contents
Foreword... I
Introduction ... II
1 Scope... 1
2 Normative References ...
3 General Provisions ... 2
4扣faterials...7
5 Design ... 8
6 Drawings and Quality Evidentiary Documents... 11
7 Fabrication ... 12
8 Inspection and Performance Measurement... 14
9 Mark, Packing, Transportation and Storage ... 15
Annex A(Normative) Gaskets of Plate Heat Exchanger... 17
Annex B (Informative) Plate Heat Exchanger Checklist... 21
Annex C (Informative) Plate Heat Exchanger Data Sheets... 22
NOTE. The English version hereof加s been translated directly from the openly-published Chinese
standard NBIT 47004-2009 ρBT 4752). In the event of a~ discrepancy in the pro臼SS of
implementation the Chinese version shall pr, 即ail.
Plate Heat Exchangers
1 Scope
1.1 This standard gives design, fabrication, inspection and acceptance requirements for
demountable plate heat exchanger (”plate heat exchanger" for short).
1.2 This standard is applicable to gasketed and semi-welded plate heat exchangers. The
authorization and agreement of the purchaser are required when the plate heat exchangers of
other types are designed, fabricated and inspecting by making reference to this standard.
1.3 The scope of the design temperature to which this standard is applicable shall be
determined according to the scope of allowable service temperature of gasket and other
element materials.
2 Normative References
The following referenced documents are indispensable references, only the edition cited
applies. For undated references, only the edition cited applies. For undated references, the
latest edition of the referenced document (including any amendments) applies.
GB/T 699-1999 ”Quality Carbon Structural Steels"
GB/T 700-2006 ”Carbon Structural Steels”(GB/T 700-2006, ISO 630. 1995, NEQ)
GB/T 983-1995 ”Stainless Steel Covered Electrodes”
GB/T 1220-2007 ”Stainless Steel Bars"
GB/T 1591-2008 ”High Strength Low Alloy Structural Steels"
GB/T 2054-2005 ”Nickel and Nickel Alloy Sheets"
GB/T 3077-1999 ”Alloy Structure Steels" (GB/T 3077-1999, DIN EN 10083-1. 1991,
NEQ)
GB/T 3274-2007 ”Hot-rolled Plates and Strips of Carbon Structural Steels and High
Strength Low Alloy Structural Steels" (GB/T 3274-2007, ISO 13976. 2005, ISO 630. 1995,
NEQ)
GB/T 3280-2007 ”Cold Rolled Stainless Steel Plate Sheet and Strip"
GB/T 3623-2007 ”Titanium and Titanium Alloy Wire”
GB/T 3624-1995 ”Titanium and Titanium Alloy Tubes"
GB/T 3625-2007 ”Titanium and Titanium Alloy Tube for Condensers and Heat
Exchangers”
GB/T 4237-2007 ”Hot Rolled Stainless Steel Plate Sheet and Strip"
GB/T 5117-1995 ”Carbon Steel Covered Electrodes" (GB/T 5117-1995, ANSI/AWSA
5.1. 1991, NEQ)
GB/T 5118-1995 Low Alloy Structural Steel "(GB/T 5118-1995, ANSI/ AWSA 5.5. 1981, NEQ)
GB 713-208 ”Steel Plates for Boiler and Pressure Vessels"
GB/T 8163-2008 ”Seamless Steel Tubes for Liquid Service”
GB 13296-2007 ”Seamless Stainless Steel Tubes for Boiler and Heat Exchanger" (GB
13296-2007, ASMESA213/213M. 2001. NEQ)
GB/T 14845-2007 ”Titanium Sheet for Plate Heat Exchangers"
GB/T 14976-2002 ”Stainless Steel Seamless Tubes for Fluid Transport" (GB/T 14976-2002)
JB 4708 "Welding Procedure Qualification for Steel Pressure Vessels"
JB/T 4709 ’Wlelding Specification for Steel Pressure Vessels"
JB 4726 ”Carbon and Low-allo?' Steel Forgings for Pressure Vessels"
JB 4727 ”Low-alloy Steel Forgmgs for Low Temperature Pressure Vessels"
JB 4728 "Stainless Steel Forgings for Pressure Vessels"
Chevron
Gasket slot
7.2 Welding
7.2.1 Without effective protection measures, the welding must not be conducted when the
welding environment has any one of the following conditions.
a) The relative humidity is larger than 90%;
b) The temperature of welded parts is less than 15 ℃．
7.2.2 Welding procedure
7.2.2.1 咀ie welding procedure qualification of compression components may be formulated
by making reference to JB 4708 and the requirements of drawings.
7.2.2.2 The welding of plate pair of semi-welded plate heat exchanger may be adopted with
laser beam welding, argon arc welding or plasma arc welding, etc.
7.2.2.3 When the welding method and welding procedure of the plate pair of semi-welded
plate heat exchanger exceed those specified in JB 4708, the welding procedure shall be
reported to the National Technical Committee on Boilers and Pressure Vessels of
Standardization Administration of China for assessment and confirmation.
7.2.3 Weld quality
7.2.3.1 The unfitness of the butt welds of nozzles shall not be greater than 8S/4 (8S is 也c
thickness of steel at the contra aperture).
7.2.3.2 The reinforcement of weld shall be in accordance with the requirements of drawings.
7.2.3.3 The weld surface shall be free from cracks, gas cavities, arc crater and splashes.
7.2.4 Weld repairing
7.2.4.1 孔'hen the welds require repairing, 吐ie repairing technology shall be in accordance
with the relevant regulations specified in 7.2.2.
7.2.4.2 The welds shall not be repaired over two times at the same position. Otherwise, the
repairing shall be reported to the general technical superintendent of the manufacturing
organization for approval, and the repairing times, positions and conditions shall be recorded
in the vessel quality certificate.
7.3 Assembly
7.3.1 The plate heat exchanger shall be assembled in accordance with the product pass and
channel arrangement drawing.
7.3.2 The gasket slot and corrugated surface of the plate shall be cleaned without dirt before
assembling.
7.3.3 孔'hen pasting 吐ie gasket in the gasket slot of plate with adhesives, the gasket shall have
no distortion and loosαiing; when fixing the gasket in the gasket slot of plate by adopting
with other methods, the gasket still shall have no such conditions as distortion and deviation
from the gasket slot of plate.
7.3.4 孔'hen tying the plate pack, the stud (or top bar) shall be tightened up uniformly and
symmetrically in order to keep the parallel condition of plates. After assembling, when the
clamping size L is less than lOOOmm, the parallel misalignment bem「een m「o cover plates
shall not be larger than 2mm; when the clamping size Lis larger than lOOOmm, the parallel
misalignment between two cover plates shall not be larger than 3% of the clamping size L or
shall not be larger than 4mm.
7.3.5 The deviation in clamping size L shall not be larger than 3% of L; and when the
clamping size is less than 30mm, the deviation shall not be larger than Imm.
7.3.6 The sealing surface of the nozzle flange of cover plates shall be perpendicular to the
centerline of nozzle and its deviation shall not exceed 1 % of the flange outer diameter (the
flange outer diameter shall be lOOmm when it is less than lOOmm) or 3mm 付ie deviation
shall be determined according to drawing if special requirement is provided).
7.3. 7 The carbon steel parts and components of the plate heat exchanger shall be taken with
rust protection measures; the flange sealing surface should be protected by coating with
lubricant (grease).
7.3.8 The metal surface of plate heat exchanger requiring painting shall be dried in advance;
and the oil stains, rust, weld spa忧er and other sundries that may affect the painting quality
shall be removed. The surface paint film shall be uniform without bubbles, cracks and
peeling.
7.3.9 The inner chamber of the assembled plate heat exchanger shall be clean without
sundries.
7.4 Hydrostatic testing
The hydrostatic test shall be separately applied to 也c plate heat exchangers one by one.
7.4.1 Generally, water shall be adopted as the medium in the hydrostatic test, the water stains
shall be removed after conducting hydrostatic test with water on the plate heat exchanger
assembled with austenitic stainless steel plates, if this requirement can not be met, the
chloride content of water used for the hydrostatic test shall not exceed 25 mg/L.
7.4.2 The test pressure shall be determined according to those specified in 3.6.1.
7.4.3 For each hydrostatic test, two calibrated pressure gauges with precision class no less
也an 1.6 and the same measurement range shall be adopted. The measurement range of the
pressure gauge shall be 1. 5~ 3 times of the design pressure, and the diameter of the dial shall
not be less than 100 mm.
7.4.4 The hydrostatic test shall be applied s叩arately to the hot side and cold side no pressure
to the other side.
7.4.5 Air outlet shall be set at proper position for the test, and air m 吐ie PHE shall be drained
out by filling water. 卫ie sighting plane of the PHE shall be kept dry during the test.
7.4.6 咀ie hydrostatic test pressure for each test shall be held for a sufficient time to permit s
thorough inspection and detection of all the sealing surfaces and compression welding
positions, or for not less than 30min. During the test, the pressure shall be kept constant,
method of continuous compression or tightening up the stud (or 归p bar) to holding the
constant pressure shall not be taken.
7.4. 7 After completion of the hydrostatic test, 世ie PHE shall be drained.
8 Inspection and Performance Measurement
8.1 Plate
8.1.1 The d叩th of the gasket slot of plate shall be detected with dial indicator, the detection
points shall be distributed uniformly with four respectively at both ends, and the gasket slot
shall be detected at three points per lm at the straight part (t...
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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