JB/T 6667.1-1993 Volute mixed flow pump types and basic parameters JB/T6667.1-1993 standard download decompression password: www.bzxz.net

ICS65.060.35
Machinery Industry Standard of the People's Republic of China JB/T6667.1—2004
Replaces JB/T6667.11993
Volute mixed flow pumps-Part 1:
Types and basic parameters
Volute mixed flow pumps-Part l:Types and basic parameters parameters2004-10-20 release
2005-04-01 implementation
People's Republic of China National Development and Reform Commission release
Normative reference documents,
Type and basic parameters
3.1 Type,
Model,
Basic parameters..
Table丨Basic parameters of pump to ensure performance points
JB/T6667.1-2004
JB/T6667.1-—2004
JB/T6667 "Volute Mixed Flow Pump" is divided into two parts: Part 1: Type and basic parameters:
Part 2: Technical conditions.
This part is the first part of JB/T6667 "Volute Mixed Flow Pump". This part is a revision of JB/T6667.1-1993. Compared with JB/T6667.1-1993, the main changes are as follows: - Several specifications of volute mixed flow pumps are added, and the parameters of several specifications of volute mixed flow pumps are adjusted: The provisions and judgments of the basic parameter deviations in the standard adopt the methods specified in ISO9906:1999 "Hydraulic Performance Acceptance Test Levels 1 and 2 for Rotary Power Pumps".
This part replaces JB/T6667.11993.
This part is proposed by the China Machinery Industry Federation. This part is under the jurisdiction of the National Agricultural Machinery Standardization Technical Committee. The responsible drafting units of this part are: China Agricultural Mechanization Science Research Institute, Jiangsu Yancheng Pump Factory, Jiangsu Nantong Pump Factory, Zhejiang Hangzhou Xinhua Machinery Co., Ltd. The main drafters of this part are: Xu Guangyuan, Li Yunhu, Zhan Rui, Chen Zhiyong, Li Xinhua. The previous versions of the standards replaced by this part are: -NJ315-1984, JB/T6667.1-1993. H
1 Scope
JB/T6667.1-2004
Volute mixed flow pump Part 1: Types and basic parameters This part specifies the types, models and basic parameters of volute mixed flow pumps. This part is applicable to volute mixed flow pumps that transport clean water or other liquids with physical and chemical properties similar to water (hereinafter referred to as pumps) 2 Normative references
The clauses in the following documents become the clauses of this part through reference in this part of JB/T6667. 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 documents, the latest version shall apply to this part JB/T6667.2 Volute mixed flow pump Part 2: Technical conditions ISO9906:1999 Rotary dynamic pump hydraulic performance acceptance test levels 1 and 2
3 Types and basic parameters
3.1 Type
3.1.1 The structural type of the pump is a single-stage, axial suction, horizontal pump. The foot and the pump body are cast as one piece. The inlet and outlet diameters of the pump body are the same. Pumps with a diameter less than or equal to 300mm discharge water vertically upwards, and pumps with a diameter greater than 300mm generally discharge water horizontally. 3.1.2 Viewed from the pump inlet direction, the impeller generally rotates counterclockwise. 3.2 Model
3.2.1 Model representation method
The pump model consists of Chinese pinyin capital letters and Arabic numerals, as follows:口
3.2.2 Marking example
Variant mark
Guaranteed head (rounded to an integer value), unit: m. Volute mixed flow pump
Pump inlet and outlet diameters, unit: mm
The inlet and outlet diameters are 300mm. The volute mixed flow pump with a guaranteed head of 12.5m is marked as: 300HW-12. The inlet and outlet diameters are 300mm. The guaranteed head is 4.0m. The volute mixed flow pump with a front and rear door structure for installation and removal of the impeller is marked as: 300HW-4S
3.3 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. 3.3.2 The deviation of the pump's basic parameters shall comply with the provisions of Level 2 in ISO9906:1999. 3.3.3 For other pumps that do not comply with the provisions of this section, the following provisions shall be met: a) The guaranteed efficiency of the pump shall not be lower than the guaranteed efficiency value of the pump with the same inlet and outlet diameter and similar specific speed in Table 1; b) The guaranteed critical NPSH of the pump shall not be greater than the value of the pump with the same inlet and outlet diameter and similar specific speed in Table 1; c) The power reserve coefficient of the matching power machine is generally 1.1 to 1.3; d) Other technical requirements shall comply with the provisions of JB/T6667.2. 3.3.4 Under the conditions of complying with the provisions of this section, the pump can meet the use requirements by adjusting the speed, and the recommended speed adjustment range is 20% of its specified speed.
100HW-5
100HW-8
100HW-12
150HW-3
150HW-5
150HW-8
150HW-12
200HW-3
200HW-4S|| tt||200HW-5
200HW-8||t t||200HW-12
250HW-3
250HW-4S
250HW-5
250HW-7S
250HW-8
250HW-12
300HW-4SbZxz.net
300HW-5||t t||300HW-7
300HW-8||tt ||300HW-12
350HW-8
400HW-5
400HW-7
400HW-8
400HW-12
500HW-6
500HW-7
500HW-11
600HW-7
600HW-11
700HW-7
700HW-12
Basic parameters of pump performance points
(%)
Matching power
Critical NPSH
Specific speed
People's Republic of China
Mechanical industry standard
Volute mixed flow pump Part 1:
Type and basic parameters
JB/T 6667.12004
Published by Machinery Industry Press
No. 22 Baiwanzhuang Street, Beijing
Postal Code: 100037
Format: 890mm×1240mm1/16·0.5 printing sheet·8,000 words1st edition, 1st printing in April 2005
Book Number: 15111·7492
Website: http:ffwww.cmpbook.comEditorial Office Tel: (010) 88379779
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