This standard specifies the types and basic parameters of pipeline centrifugal pumps. JB/T 6878.1-1993 Types and basic parameters of pipeline centrifugal pumps JB/T6878.1-1993 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T6878.1~6878.2--93
Pipeline Centrifugal Pump
1993-07-13 Issued
Ministry of Machinery Industry of the People's Republic of China
Implementation on 1994-07-01
Pipeline Centrifugal Pump
JB/T6878.1—93
Pipeline Centrifugal Pump
JB/T 6878.2-93
Types and Basic Parameters
Technical Conditions
Mechanical Industry Standard of the People's Republic of China
Pipeline Centrifugal Pump
1 Subject Content and Scope of Applicationbzxz.net
Types and Basic Parameters
This standard specifies the types and basic parameters of pipeline centrifugal pumps. JB/T6878.1-93
This standard applies to pipeline centrifugal pumps (hereinafter referred to as pumps) that convey clean water or weakly corrosive liquids at a temperature of 0 to 100°C. The maximum working pressure is not more than 1.0MPa, and the suction pressure is not more than 0.2MPa. 2. Type
2.1 The pump is vertical.
2.2 The suction and discharge port diameters of the pump are the same, and their center lines are on the same horizontal line and are orthogonal to the vertical axis. 2.3 The pump is coaxial with the motor or connected to the motor with an extended shaft or coupling. 2.4 From the motor end, the impeller rotates clockwise. 3 Model
3.1 Method of indicating the model
The pump model is indicated by Chinese pinyin letters and Arabic numerals. Specified head, m
Generally, clean water pumps are not marked. If there is a change in structure when conveying hot water, add R; corrosion-resistant pumps add F. Pipeline centrifugal pumps
Suction and discharge port diameters, mm
3.2 Model example
Pump suction and discharge port diameters are 40mm, and the specified head is 32m. Pipeline centrifugal pumps, 40G-32. 4 Basic parameters
4.1 The basic parameters of the pump shall comply with the provisions of the following table. The efficiency of the corrosion-resistant pump is 2 percentage points lower than the corresponding specified value in the table. 4.2 The parameters specified in the following table are based on clean water at room temperature. Approved by the Ministry of Machinery Industry on July 13, 1993
Implemented on July 1, 1994
20G-20
25G-20
25G-32
32G-20
32G-32
32G-50
40G-20
40G-3 2
40G-50
40G-80
50G-20
50G-32
50G-50
50G-80
65G-20
65G-32
65G-50
65G-80
Import and Export Diameter
JB/T6878.1-93
Performance parameter table of pipeline centrifugal pump
Pump efficiency
Matching power
NPSH
80G-20
80G-32
80G-50
80G-80
100G-20|| tt||100G-32
100G-50
100G-80
150G-12.5
150G-30
150G-32
150G-50
Inlet and outlet diameters
Note: When equipped with a single-phase motor, the speed is 2800r/min. Additional instructions:
JB/T 6878.193
This standard was proposed and managed by the Shenyang Pump Research Institute. This standard was drafted by the Fluid Machinery Research Institute of Jiangsu Institute of Technology. The main drafters of this standard are Xie Darong, Wang Yang, and Sha Yi. Speed
Pump efficiency
Matching power
NPSH
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