Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization — Part 1: Rules for the structure and drafting of standardizing documents.
This standard replaces GB/T 24674-2009 Waste submersible motor-pumps. In addition to a number of structural adjustments and editorial changes, the following main technical changes have been made with respect to GB/T 24674-2009:
a) The normative reference is modified (see Clause 2 of this standard; Clause 2 of Edition 2009);
b) The efficiency and power of the motor-pump are modified (see 4.3.1; 3.3.1 of Edition 2009);
c) The efficiency value of the variant products of axial-flow or mixed-flow motor-pump from other angles are modified (see 4.3.5; 3.3.6 of Edition 2009);
d) The volume ratio and density of the solid matter in the transmitted medium are modified (see 5.1.3; 4.2 of Edition 2009);
e) The provisions of pump shaft power in the range of 0.7-1.3 times of the specified flow rate are modified (see 5.2.5; 4.4.5 of Edition 2009).
f) The provisions on the passing capacity of motor-pumps are added (see 5.2.7);
g) The provisions of motor-pump motor power when the density of transmitted medium ρ≤1.05×103 kg/m3 are added (see 5.2.8);
h) The motor efficiency and power factor are modified (see 5.3.1; 4.5.1 of Edition 2009);
i) The temperature rise limit of stator winding of motor-pump motor are modified (see 5.3.9; 4.6 of Edition 2009);
j) The provisions on repeated withstand voltage test of motor-pump motor are modified (see 5.3.12; 4.9 of Edition 2009).
k) The material requirements of main components of motor-pump are modified (see 5.4; 4.25 of Edition 2009);
l) The motor rotor balance requirements are added (see 5.5.3);
m) The provisions on outgoing cables of motor-pumps are modified (see 5.6; 4.13.2 of Edition 2009);
n) The provisions on performance test of motor-pumps are modified (see 6.2; 5.2 of Edition 2009).
o) The provisions on performance test of motor-pump motor are modified (see 6.4; 5.3 of Edition 2009);
p) The provisions on inspection of motor-pump outgoing cables are added (see 6.8);
q) The provisions on appearance inspection of motor-pumps are added (see 6.10);
r) The curve in Annex A is modified (see Annex A hereof; Annex A of Edition 2009).
Attention is drawn to the possibility that some of the elements of this standard may be the subject of patent rights. The issuing body of this standard shall not be held responsible for identifying any or all such patent rights.
This standard was proposed by the China Machinery Industry Federation.
This standard is under the jurisdiction of National Technical Committee on Agricultural Machinery of Standardization Administration of China (SAC/TC 201).
This standard was firstly issued in 2009, this edition is the first revision.
Waste submersible motor-pumps
1 Scope
This standard specifies the type, model, basic parameters, technical requirements, test methods, inspection rules as well as marking, packaging, storage and transportation of waste submersible motor-pumps.
This standard is applicable to single-phase or three-phase waste submersible motor-pumps (hereinafter referred to as "motor-pump") for pumping all kinds of sewage (waste water) or mixed liquid containing insoluble solid substances such as silt, fiber, feces and river mud fertilizer.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this standard and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 191 Packaging — Pictorial Marking for Handling of Goods
GB 755 Rotating electrical machines — Rating and performance
GB/T 1176 Casting Copper and Copper Alloys
GB/T 1220 Stainless steel bars
GB/T 1348 Spheroidal graphite iron castings
GB/T 1971 Rotating electrical machines — Terminal markings and direction of rotation
GB/T 2828.1-2012 Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 3098.6 Mechanical properties of fasteners — Stainless steel Bolts,screws and studs
GB/T 4942.1-2006 Degrees of protection provided by the integral design of rotating electrical machines (IP code) — Classification
GB/T 5013.4 Rubber insulated cables of rated voltages up to and including 450/750V — Part 4:Cords and flexible cables
GB/T 9239.1 Mechanical vibration — Balance quality requirements for rotors in a constant (rigid) state — Part 1: Specification and verification of balance tolerances
GB/T 9439 Grey iron castings
GB 10395.8 Tractors and machinery for agriculture and forestry — Technical means for ensuring safety — Part 8: Irrigation pumps and machines
GB 10396 Tractors, machinery for agriculture and forestry, powered lawn and garden equipment — Safety signs and hazard pictorials — General principles
GB/T 12785-2014 Test methods for submersible motor-pumps
GB/T 13306 Plates
GB/T 17241.6 Integral cast iron flanges
GB/T 20878 Stainless and heat-resisting steels — Designation and chemical composition
GB/T 22715 Impulse voltage withstand levels of form-wound stator coils for rotating a.c. machines
JB/T 5673 Agricultural and forestry tractors and machinery — General requirements of painting
JB/T 6880.1 Grey iron castings for pumps
JB/T 6880.2 Steel castings for pumps
JB/T 6880.3 Castings for pumps — Part 3: Erosive wear-resistant white iron castings of pumps
JB/T 8735.2 Rubber insulated cords and flexible cables of rated voltages up to and including 450/750 V — Part 2: Tough rubber sheathed flexible cables for general purposes
JB/T 8735.3 Rubber insulated cords and flexible cables of rated voltages up to and including 450/750 V — Part 3: Rubber insulated braided cords
JB/T 8996-2014 Guide to the selection of high-voltage cables
JB/T 12728-2016 Specification and the energy efficiency grades for Y, YX series three-phase high voltage induction motors (Frame size 355~630)
3 Terms and definitions
No terms and definitions are listed in this standard.
4 Type, model and basic parameters
4.1 Type
4.1.1 The motor-pump is single-stage or multi-stage vertical pump, and the pump is coaxial with the motor.
4.1.2 By the impeller structure, the motor-pump is classified into:
a) vortex impeller;
b) semi-open blade impeller;
c) closed blade impeller;
d) single or double channel impeller;
e) spiral centrifugal impeller;
f) mixed-flow impeller;
g) axial-flow impeller.
4.1.3 The type characteristic of motor-pump is expressed in capital Chinese phonetic alphabet:
a) X——vortex;
b) H——mixed-flow;
c) Z——axial-flow;
Impeller structures that is channel, spiral centrifugal, closed and semi-open are not marked.
4.1.4 The motor characteristic of motor-pump is expressed in capital Chinese phonetic alphabet:
a) S——water-filled;
b) Y——oil-filled;
c) D——single-phase;
d) G——high voltage (three-phase dry motor with 660 V and below is not marked).
4.1.5 For levels of enclosure protection of motor-pump is IPX8 specified in GB/T 4942.1-2006. The protection level of special requirements shall be determined by both parties through negotiation according to the provisions of GB/T 4942.1-2006.
4.1.6 The motor-pump quota is a continuous quota based on the continuous working system (S1).
4.2 Model
4.2.1 The model of motor-pump consists of capital Chinese phonetic alphabet and Arabic numeral. The specific representation methods are as follows:
Example 1: The mixed-flow waste submersible motor-pumps which specified flow is 4 860 m3/h, specified head is 5.4 m, rated power is 185 kW, accompany with three-phase motor with a voltage of 380 V, is marked as:
WQH4860-5.4-185
Example 2: The axial-flow waste submersible motor-pumps which specified flow is 29 000 m3/h, specified head is 2.8 m, rated power is 500 kW, accompany with three-phase motor with a voltage of 6 000 V, is marked as:
WQZG29000-2.8-500
Example 3: The closed waste submersible motor-pumps which specified flow is 5 m3/h, specified head is 7 m, rated power is 0.55 kW, accompany with single-phase motor with a voltage of 220 V, is marked as:
WQD5-7-0.55
Example 4: The closed waste submersible motor-pumps with cutting mechanism which specified flow is 50 m3/h, specified head is 15 m, rated power is 7.5 kW, accompany with three-phase motor with a voltage of 380 V, is marked as:
WQ50-15-7.5/QG
Example 5: The closed stainless steel waste submersible motor-pumps which specified flow is 50 m3/h, specified head is 15 m, rated power is 7.5 kW, accompany with three-phase motor with a voltage of 380 V, is marked as:
WQ50-15-7.5G
4.2.2 Supplementary identification refers to the description or identification of the necessity of products made by the enterprise according to the contract or regulations, which be or not be marked as required.
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Type, model and basic parameters 5 Technical requirements 6 Test methods 7 Inspection rules 8 Marking, packaging, storage and transportation Annex A (Nominative) Determination of motor-pump efficiency
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization — Part 1: Rules for the structure and drafting of standardizing documents.
This standard replaces GB/T 24674-2009 Waste submersible motor-pumps. In addition to a number of structural adjustments and editorial changes, the following main technical changes have been made with respect to GB/T 24674-2009:
a) The normative reference is modified (see Clause 2 of this standard; Clause 2 of Edition 2009);
b) The efficiency and power of the motor-pump are modified (see 4.3.1; 3.3.1 of Edition 2009);
c) The efficiency value of the variant products of axial-flow or mixed-flow motor-pump from other angles are modified (see 4.3.5; 3.3.6 of Edition 2009);
d) The volume ratio and density of the solid matter in the transmitted medium are modified (see 5.1.3; 4.2 of Edition 2009);
e) The provisions of pump shaft power in the range of 0.7-1.3 times of the specified flow rate are modified (see 5.2.5; 4.4.5 of Edition 2009).
f) The provisions on the passing capacity of motor-pumps are added (see 5.2.7);
g) The provisions of motor-pump motor power when the density of transmitted medium ρ≤1.05×103 kg/m3 are added (see 5.2.8);
h) The motor efficiency and power factor are modified (see 5.3.1; 4.5.1 of Edition 2009);
i) The temperature rise limit of stator winding of motor-pump motor are modified (see 5.3.9; 4.6 of Edition 2009);
j) The provisions on repeated withstand voltage test of motor-pump motor are modified (see 5.3.12; 4.9 of Edition 2009).
k) The material requirements of main components of motor-pump are modified (see 5.4; 4.25 of Edition 2009);
l) The motor rotor balance requirements are added (see 5.5.3);
m) The provisions on outgoing cables of motor-pumps are modified (see 5.6; 4.13.2 of Edition 2009);
n) The provisions on performance test of motor-pumps are modified (see 6.2; 5.2 of Edition 2009).
o) The provisions on performance test of motor-pump motor are modified (see 6.4; 5.3 of Edition 2009);
p) The provisions on inspection of motor-pump outgoing cables are added (see 6.8);
q) The provisions on appearance inspection of motor-pumps are added (see 6.10);
r) The curve in Annex A is modified (see Annex A hereof; Annex A of Edition 2009).
Attention is drawn to the possibility that some of the elements of this standard may be the subject of patent rights. The issuing body of this standard shall not be held responsible for identifying any or all such patent rights.
This standard was proposed by the China Machinery Industry Federation.
This standard is under the jurisdiction of National Technical Committee on Agricultural Machinery of Standardization Administration of China (SAC/TC 201).
This standard was firstly issued in 2009, this edition is the first revision.
Waste submersible motor-pumps
1 Scope
This standard specifies the type, model, basic parameters, technical requirements, test methods, inspection rules as well as marking, packaging, storage and transportation of waste submersible motor-pumps.
This standard is applicable to single-phase or three-phase waste submersible motor-pumps (hereinafter referred to as "motor-pump") for pumping all kinds of sewage (waste water) or mixed liquid containing insoluble solid substances such as silt, fiber, feces and river mud fertilizer.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this standard and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 191 Packaging — Pictorial Marking for Handling of Goods
GB 755 Rotating electrical machines — Rating and performance
GB/T 1176 Casting Copper and Copper Alloys
GB/T 1220 Stainless steel bars
GB/T 1348 Spheroidal graphite iron castings
GB/T 1971 Rotating electrical machines — Terminal markings and direction of rotation
GB/T 2828.1-2012 Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 3098.6 Mechanical properties of fasteners — Stainless steel Bolts,screws and studs
GB/T 4942.1-2006 Degrees of protection provided by the integral design of rotating electrical machines (IP code) — Classification
GB/T 5013.4 Rubber insulated cables of rated voltages up to and including 450/750V — Part 4:Cords and flexible cables
GB/T 9239.1 Mechanical vibration — Balance quality requirements for rotors in a constant (rigid) state — Part 1: Specification and verification of balance tolerances
GB/T 9439 Grey iron castings
GB 10395.8 Tractors and machinery for agriculture and forestry — Technical means for ensuring safety — Part 8: Irrigation pumps and machines
GB 10396 Tractors, machinery for agriculture and forestry, powered lawn and garden equipment — Safety signs and hazard pictorials — General principles
GB/T 12785-2014 Test methods for submersible motor-pumps
GB/T 13306 Plates
GB/T 17241.6 Integral cast iron flanges
GB/T 20878 Stainless and heat-resisting steels — Designation and chemical composition
GB/T 22715 Impulse voltage withstand levels of form-wound stator coils for rotating a.c. machines
JB/T 5673 Agricultural and forestry tractors and machinery — General requirements of painting
JB/T 6880.1 Grey iron castings for pumps
JB/T 6880.2 Steel castings for pumps
JB/T 6880.3 Castings for pumps — Part 3: Erosive wear-resistant white iron castings of pumps
JB/T 8735.2 Rubber insulated cords and flexible cables of rated voltages up to and including 450/750 V — Part 2: Tough rubber sheathed flexible cables for general purposes
JB/T 8735.3 Rubber insulated cords and flexible cables of rated voltages up to and including 450/750 V — Part 3: Rubber insulated braided cords
JB/T 8996-2014 Guide to the selection of high-voltage cables
JB/T 11923 Submersible motor-pumps — Reliability evaluation methods
JB/T 12728-2016 Specification and the energy efficiency grades for Y, YX series three-phase high voltage induction motors (Frame size 355~630)
3 Terms and definitions
No terms and definitions are listed in this standard.
4 Type, model and basic parameters
4.1 Type
4.1.1 The motor-pump is single-stage or multi-stage vertical pump, and the pump is coaxial with the motor.
4.1.2 By the impeller structure, the motor-pump is classified into:
a) vortex impeller;
b) semi-open blade impeller;
c) closed blade impeller;
d) single or double channel impeller;
e) spiral centrifugal impeller;
f) mixed-flow impeller;
g) axial-flow impeller.
4.1.3 The type characteristic of motor-pump is expressed in capital Chinese phonetic alphabet:
a) X——vortex;
b) H——mixed-flow;
c) Z——axial-flow;
Impeller structures that is channel, spiral centrifugal, closed and semi-open are not marked.
4.1.4 The motor characteristic of motor-pump is expressed in capital Chinese phonetic alphabet:
a) S——water-filled;
b) Y——oil-filled;
c) D——single-phase;
d) G——high voltage (three-phase dry motor with 660 V and below is not marked).
4.1.5 For levels of enclosure protection of motor-pump is IPX8 specified in GB/T 4942.1-2006. The protection level of special requirements shall be determined by both parties through negotiation according to the provisions of GB/T 4942.1-2006.
4.1.6 The motor-pump quota is a continuous quota based on the continuous working system (S1).
4.2 Model
4.2.1 The model of motor-pump consists of capital Chinese phonetic alphabet and Arabic numeral. The specific representation methods are as follows:
Example 1: The mixed-flow waste submersible motor-pumps which specified flow is 4 860 m3/h, specified head is 5.4 m, rated power is 185 kW, accompany with three-phase motor with a voltage of 380 V, is marked as:
WQH4860-5.4-185
Example 2: The axial-flow waste submersible motor-pumps which specified flow is 29 000 m3/h, specified head is 2.8 m, rated power is 500 kW, accompany with three-phase motor with a voltage of 6 000 V, is marked as:
WQZG29000-2.8-500
Example 3: The closed waste submersible motor-pumps which specified flow is 5 m3/h, specified head is 7 m, rated power is 0.55 kW, accompany with single-phase motor with a voltage of 220 V, is marked as:
WQD5-7-0.55
Example 4: The closed waste submersible motor-pumps with cutting mechanism which specified flow is 50 m3/h, specified head is 15 m, rated power is 7.5 kW, accompany with three-phase motor with a voltage of 380 V, is marked as:
WQ50-15-7.5/QG
Example 5: The closed stainless steel waste submersible motor-pumps which specified flow is 50 m3/h, specified head is 15 m, rated power is 7.5 kW, accompany with three-phase motor with a voltage of 380 V, is marked as:
WQ50-15-7.5G
4.2.2 Supplementary identification refers to the description or identification of the necessity of products made by the enterprise according to the contract or regulations, which be or not be marked as required.
Contents of GB/T 24674-2021
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Type, model and basic parameters
5 Technical requirements
6 Test methods
7 Inspection rules
8 Marking, packaging, storage and transportation
Annex A (Nominative) Determination of motor-pump efficiency
