This standard specifies the type, basic parameters, model representation method, main technical requirements, inspection, packaging, etc. of spiral tube heat exchangers for mechanical seal systems. This standard applies to HR type spiral tube heat exchangers for mechanical seal systems. JB/T 6631-1993 Spiral tube heat exchangers for mechanical seal systems JB/T6631-1993 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T6631-1993
Spiral Tube Heat Exchanger for Mechanical Seal System
Published on 1993-05-07
Ministry of Machinery Industry of the People's Republic of China
Implemented on 1994-01-01
Mechanical Industry Standard of the People's Republic of China
Spiral Tube Heat Exchanger for Mechanical Seal System
1 Subject Content and Scope of Application
JB/T 66311993
This standard specifies the type, basic parameters, model representation method, main technical requirements, inspection, packaging and other contents of spiral tube heat exchanger for mechanical seal system.
This standard applies to HR type spiral tube heat exchanger for mechanical seal system. 2 Reference standards
GB150 Steel pressure vessels
3 Types and basic parameters
3.1 Type
The structural type of HR spiral tube heat exchanger for mechanical seal system is shown in the figure below, where the spiral tube is divided into single layer, double layer and three layers. D
1-Circulation pipeline (inlet):
2-Circulation pipeline (outlet):
3-Cooling water (inlet):
5-Cooling water exhaust (vertical);
5a-Cooling water exhaust (horizontal);
4-Cooling water (outlet);
6-Circulation pipeline exhaust:
3.2 Basic parameters shall be as specified in Table 1.
Approved by the Ministry of Machinery Industry on May 7, 1993
9-Core components (with cooling coils)
7-Venting:
8-Shell:
Implemented on January 1, 1994
Heat exchange area
Note: There is no finalized product for HR1 and HR2. 3.3
Outer dimensions shall be in accordance with the provisions of Table 2.
Model representation method
Model example:
Rated power
Water/water
JB/T6631-1993
Cooling water volume
A=5℃
Heat exchange area is represented by numbers, 10m
Helical tube heat exchanger is represented by the letter HR
Heat exchange area is 0.6m Spiral tube heat exchanger: HR65 Main technical requirements
Rated pressure
Inside the shell
Rated temperature
HR type spiral tube heat exchanger shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. The welding requirements of HR type spiral tube heat exchanger shall be implemented in accordance with the relevant provisions of GB150. 5.2
The spiral tube is wound with 1Cr18Ni9Ti seamless steel pipe. 5.3
Each heat exchanger shall be tested for internal pressure on the tube side and shell side with water. 6www.bzxz.net
Testing method
Tube side internal pressure test
Before assembly, install the heat exchanger core components, block the outlet of the circulation pipeline with a screw plug, and pressurize the liquid inlet. Exhaust the air during pressurization, then wipe off the water droplets attached to the outside, pressurize to 1.25 times the design pressure, and maintain the pressure for at least 5 minutes. During this period, the display of pressure gauge 2
is not allowed to drop and no liquid leaks. 6.2 Shell side pressure test
JB/T6631-1993
Install the heat exchanger core components and shell, tighten them with bolts, and then test them according to the method described in Article 6.1, and maintain the pressure for at least 10 minutes. 7 Marking, packaging, transportation and storage
7.1 Marking
The heat exchanger should have a product mark. The product model, name, maximum pressure, maximum temperature, production unit, and date of manufacture shall be indicated on the label.
7.2 Packaging, transportation, and storage
7.2.1 The product packaging shall be able to prevent damage and loss of parts during transportation. 7.2.2 Before the heat exchanger leaves the factory, the water in the heat exchanger and the pipes must be drained and blown dry with compressed air; the joints and pipes shall be oil-sealed, and all openings shall be sealed with screw plugs or covers.
7.2.3 The validity period of the product oil seal is 12 months from the date of shipment from the manufacturer. If it is overdue, it shall be regularly inspected and re-sealed if necessary. 7.2.4 The product shall have a product certificate, which shall indicate the product model, name, manufacturer, production date, and the signature of the inspector. 7. 2. 5
The heat exchanger shall be packed in wooden boxes or corrugated paper before leaving the factory. The product shall be stored in a clean and dry warehouse. Additional Notes:
This standard was proposed and managed by the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by the Shenyang Mechanical Seal Research Institute. The main drafters of this standard were Hong Qin and Shi Xueli. 3
People's Republic of China:
Mechanical Industry Standard
Spiral Tube Heat Exchanger for Mechanical Sealing System
JB/T 66311993
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Format 880×12301/16
First edition in October 1993
Postal Code 100044)
Sheet 1/2Number of words 6.000
First edition in October 1993
Sold once
Number of prints 1-500
Price 2.00 Yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn66199
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