JB/T 6666.1-1993 Guide vane mixed flow pump types and basic parameters JB/T6666.1-1993 standard download decompression password: www.bzxz.net

ICS65.060.35
Machinery Industry Standard of the People's Republic of China
JB/T6666.12004
Replaces JB/6666.11993
Diffuser mixed flow pumps Part 1: Types and basic parameters parameters2004-10-20Release
2005-04-01Implementation
Release by the National Development and Reform Commission of the People's Republic of ChinaForeword,
1 Scope
2 Normative references
3 Types and basic parameters
3.1 Type.
.3.2 Model..
3.3 Basic parameters,
Table" Basic parameters of the pump to ensure performance points
JB/T6666.1—2004
JB/T6666.1—2004
JB/T6666 "Guide vane mixed flow pump" is divided into two parts:Part 1: Types and basic parameters:
Part 2: Technical conditions.
This part is the first part of JB/T6666 "Guide vane mixed flow pump". This part is a revision of JB/T6666.1-1993. Compared with JB/T6666.1-1993, the main changes are as follows: several specifications of low-head guide vane mixed flow pumps are added; the provisions and judgments of basic parameter deviations in the standard adopt the methods specified in ISO9906:1999 "Swing power level 1 and 2".
This part replaces JB/T6666.1-1993.
This part is proposed by the China Machinery Industry Federation. This part is under the jurisdiction of the National Agricultural Machinery Standardization Technical Committee. Hydraulic performance acceptance test
The responsible drafting units of this part are: China Agricultural Mechanization Science Research Institute, Hubei Electromechanical Research Institute, Wuxi Xi Pump Manufacturing Co., Ltd., Jiangsu Runyuan Water Equipment Co., Ltd.
The main drafters of this part are Li Yunhu, Bian Qiuli, Zhang Liren and Zhou Haiming. This part was first issued in 1984 and revised for the first time in 1993. H
1 Scope
JB/T6666.1-2004
Part 1: Types and basic parameters
Guard vane mixed flow pump
This part specifies the types, models and basic parameters of the guide vane mixed flow pump. This part is applicable to the guide vane mixed flow pump (hereinafter referred to as the pump) that conveys clean water or other liquids with physical and chemical properties similar to water. 2 Normative references
The clauses in the following documents become the clauses of this part through reference in this part of IB/T6666. For all dated references, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, parties to an agreement based on this part are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this part GB/T13006 NPSH for centrifugal, mixed flow and axial flow pumps JB/T6666.2 Guide vane mixed flow Part 2: Technical conditions ISO9906:1999 Hydraulic performance acceptance test for rotary dynamic pumps 3 Types and basic parameters Www.bzxZ.net
3.1 Types
3.1.1 Pumps are classified according to the blade adjustment type:
a) Fixed blade type:
b) Semi-adjustable blade type:
c) Fully adjustable blade type.
Grade 1 and 2
Pumps with an outlet diameter less than 300 mm are generally fixed blade type, and pumps with an outlet diameter greater than or equal to 300 mm can be made into semi-adjustable blade type or fully adjustable blade type (mechanically adjustable or hydraulically adjustable). 3.1.2 Pumps are divided into two structural types: vertical and horizontal. 3.1.3 Rotation direction of the pump From the drive end, the pump shaft rotates clockwise. 3.1.4 Inlet flow channel: When the pump outlet diameter is less than or equal to 900mm, the inlet generally adopts a trumpet-shaped or conical inlet pipe: When the pump outlet diameter is greater than 900mm, an elbow-shaped or trumpet-shaped inlet flow channel can be used. 3.2 Model
3.2.1 Model representation method
The pump model consists of Chinese pinyin capital letters and Arabic alphanumeric letters, as follows:口
Guaranteed head (rounded to an integer value). The unit is m. Fixed blades, no note.
Structural features
Guide vane mixed flow pump
B represents semi-adjustable blades
Q represents fully-adjustable blades
The unit of pump outlet diameter is mm
JB/T6666.1--2004
Marking example
The guide vane mixed flow pump with an outlet diameter of 350mm, a guaranteed head of 19m and semi-adjustable blades is marked as: 350HDB-19
Basic parameters
3.3.1 Under the test conditions of normal temperature and clean water, the basic parameters of the pump's guaranteed performance points shall comply with the provisions of Table 1 (for pumps with an outlet diameter less than 150mm,
when the pump impeller is submerged in water, its critical cavitation margin may not be assessed). 3.3.2
The deviation of the basic parameters of the pump shall comply with the provisions of Level 2 in ISO9906:1999. For other pumps that do not comply with this part, the following provisions shall be met: 3.3.3
a) The specified efficiency of the pump shall not be lower than the guaranteed efficiency value of the pump with the same outlet diameter and similar specific speed in Table 1: b) The specified critical NPSH of the pump shall not be greater than the specified value of GB13006: c) The power reserve coefficient of the matching power machine is generally 1.11.3: d) Other technical requirements shall comply with the provisions of JB/T6666.2. 3.3.4 Under the conditions of complying with the provisions of this part, the pump can meet the use requirements by adjusting the speed, and the recommended speed adjustment range is ±20% of its specified speed.
80HD-3A
80HD-3
80HD-5
80HD-7
100 HD-3
100HD-5
100 HD-7
100HD-11
125HD-4
150HD-3
150HD-5
150HD-7
150HD-9
200HD-3
200HD-5
200HD-8
200HD -10
200HD-13
250HD-5
250HD-7
250HD-12
250HD-16
250 HD-19
300HD-6
300HD-9
300HD-13
300HD-19
300HD24
Basic parameters of pump to ensure performance points
Matching power
Critical cavitation margin
Specific speed
250HD-9
350HDB-12
350HDB-19
350HDB-24
400HDB-8
400HDB-12
400HDB-17 | | tt | ||600HDB-24
700HDB-9
700HDB-12
700HDB-16
700HDB-24
800HDQ -9
800HDQ-12
800HDQ16
800HDQ-24
900HDQ-9
900HDQ-12
900HDQ-16
900HDQ-24
1200HDQ-10
1200HDQ-12
1200HDQ-17
1200HDQ-24
1 (continued)
(%)
Matching power
JB/T6666.1--2004
Critical NPSH
Specific speed
Note: When the pump type listed in Table 1 is a blade circumferential fixed structure, its matching power is the recommended value. When the blade semi-adjustable or blade fully adjustable structure is adopted, other matching power values ​​can be selected under the condition of meeting the matching rationality requirements. 3
People's Republic of China
Mechanical Industry Standard
Guide vane mixed flow pump Part 1:
Type and basic parameters
JB/T6666.1—2004
Published and distributed by Machinery Industry Press
No. 22, Baiwanzhuang Street, Beijing
Postal code: 100037
Format 890mm×1240mm1/16·0.5 Printing sheet·1 1,000 words, 1st edition, 1st printing, April 2005
Book number: 15111·7490
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