This standard specifies the classification, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage of piston rod pumps for wind-driven water lifting. This standard applies to various piston type rod pumps used in conjunction with wind turbines (hereinafter referred to as rod pumps). JB/T 6941-1993 Technical Conditions of Tie Rod Pump for Wind Powered Water Lifting JB/T6941-1993 Standard download and decompression password: www.bzxz.net

F11 | | tt | | JB | ||Released on 1993-07-29
Ministry of Machinery Industry of the People's Republic of China
Implemented on 1994-01-01
Released
Machinery Industry Standards of the People's Republic of China||tt ||Tie rod pump for wind powered water lifting
Technical conditions
Subject content and scope of application
JB/T 694193
This standard specifies the piston type tie rod for wind powered water lifting Pump classification, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage.
This standard applies to various piston-type tie rods used in conjunction with wind turbines (hereinafter referred to as tie rods). 2 Reference standards
GB197
GB1184
GB1220
GB1529
GB3092||GB7784
JB/T5673||tt ||QB194
3 Product Category
3.1 Type
Ordinary thread, tolerance and fit (diameter 1~355mm) Shape and position tolerance Stainless steel rod without tolerance specification||tt| |Drawed brass pipe
Welded steel pipe for low-pressure fluid transportation
Test method for motorized reciprocating pump
General technical conditions for painting of agricultural and forestry tractors and implements Planting yellow ox wheel belt leather||tt| |According to the product structure characteristics, it is divided into the following two types: single-acting rod pump:
a.
double-acting rod pump. | |tt | .140,160:180.210.240,270mm. 3.3 Product model
3.3.1 Product model representation method
LB -
Speed ??stroke, mmbZxz.net
Pump cylinder diameter, mm
Tie rod pump code| |tt||3.3.2 Model Example
Tie rod pump with cylinder diameter 50mm and piston stroke 100mm, model tLB-50×100
Approved by the Ministry of Machinery Industry on 1993-07-29||tt ||1994-01-01 Implementation
1
4 Technical requirements
4.1 General technical requirements
JB/T 6941-93
4.1.1 Tie rod pumps shall comply with the provisions of this standard and be manufactured in accordance with drawings and technical documents approved through prescribed procedures. 4.1.2 The tie rod pump should be able to work continuously and reliably under the following conditions. a. The ambient temperature is -40~+40℃;
b. The water should be clear water at room temperature.
4.2 Main technical performance indicators
Under normal matching conditions, the main technical performance indicators of the tie rod pump and the wind turbine should comply with the provisions of Table 1 at the rated wind speed. Table 1 Main technical performance indicators
Serial number
2
3
4
5
Volume efficiency
of the pump Efficiency | |tt | tt||4.3.1 Tie rod
Performance index
≥0.90
Not less than 0.98 of the design letter
Not less than 0.95 of the design value
Not less than the design value
>1000h
4.3.1.1 The mechanical properties of the materials used should comply with the mechanical properties of ordinary steel pipes without threads specified in GB3092. 4.3.1.2 For tie rod welded parts, the threads at both ends should be processed after welding. The tolerance level of its axis coaxiality should comply with level 12 specified in GB1184. The external thread tolerance zone is 6g specified in GB197, and the internal thread tolerance zone is 6H in GB197. 4.3.2 Series cylinder
4.3.2.1 The mechanical properties of the materials used should comply with the mechanical properties of drawn H62Y2 specified in GB1529. 4.3.2.2 The axis straightness tolerance level of the piston working section on the inner surface of the pump cylinder should comply with level 9 specified in GB1184, and the surface roughness parameter R. value is 0.8μm,
4.3.3 Piston assembly|| tt||The valve and piston rod should be made of 2Cr13 steel whose mechanical properties comply with the provisions of GB1220. 4.3.3.1
4.3.3.2 The valve and the wide seat working surface must be ground in pairs. The contact surface roughness parameter R. value is 0.4μm. 4.3.4 Cup cup
4.3.4.1 The skin should be roughened. For the manufacture of Class 7 leather specified in QB194, 4.3.4.2 the quality of the leather should comply with the physical and chemical performance indicators specified in QB194. The service life of the leather should not be less than 500h.
4.3.4.3
4.4 Technical requirements for final assembly
4.4.1 All parts must be inspected and qualified. Outsourced parts and collaborative parts must have certificates and must pass the random inspection. Carry out assembly. 4.4.2 The pump pipe and pipe joints should be subjected to a hydraulic test. The pressure should be maintained for 3 minutes at 1.5 times the design pressure. There should be no leakage or slippage on the sealing surface.
4.4.3 The sealing of the valve and valve seat should be checked. Water injection should be maintained for 3 minutes without external additional force, and there should be no leakage. 4.4.4 When installing on site, the leather bowl must be soaked in clean water for 24 hours before assembly. 4.5 Paint
The surface of all pump pipes, pipe joints, and tie rods should be coated with anti-rust coating and should comply with the regulations of JB/T5673. 2
5
Test method
JB/T 6941-93
5.1 Test the volumetric efficiency and pump efficiency of the tie rod pump in accordance with the provisions of GB7784, and use the volume The liquid volume is measured by the method, and the head of the 5.2 main
draw rod pump is measured according to the actual working conditions on site, based on the vertical distance from the horizontal plane at the midpoint of the piston stroke to the water outlet.
5.3
Record the cumulative working time of the tie rod pump from the beginning of installation and operation to the first failure. 6 Inspection Rules
6.1 Factory Inspection
6.1.1
Each tie rod pump shall be inspected by the quality inspection department of the manufacturer before leaving the factory, and shall be accompanied by a certificate of conformity, 6.1. 2 The items of factory inspection should include the contents of Articles 4.4.1, 4.4.3 and 4.5 of this standard. Each item in the factory inspection should be qualified. If any unqualified items are allowed to be repaired, but they are still unqualified, they will not be allowed to leave the factory. 6.1.3
6.2 Type inspection
6. 2. 1
a.
b.
c.
d.| | tt | After formal production, if there are major changes in structure, materials, and processes that may affect product performance; when production is resumed three years after the product has been discontinued; when the national quality supervision agency proposes a requirement for type inspection. Type inspection items should include the contents of Articles 4.2 to 4.5 of this standard, 6.2.2 | Sampling plan, its unqualified classification, sampling plan and judgment rules are shown in Table 2. When users have special requirements, the sampling plan and determination rules shall be agreed upon by both parties. Table 2 Unqualified classification and sampling judgment table (N=9~15) Unqualified classification
Unqualified items
Number of items
Sampling
Plan||tt| |Judgment
Rule
Check Level
Sample Code
Sample Size
AQL
Ac
Re|| tt||A
①Tired efficiency
?Flow
③Height
3
s-2
2||tt ||6.5
o
① Phase-accommodating efficiency
B
②Mean working time before first failure
Pump red inner surface roughness accuracy
④Leakage of pump pipes and pipe joints
Sealing of valve and valve seat
5
S-2
A
2||tt| |25
1
2
c
①Pump cylinder inner surface straightness tolerance
②After the tie rod is welded, the transmission line coaxiality tolerance ④After the tie rod is welded, the tolerance of the inner and outer effects
①The service life of the skin
The flatness tolerance of the working surface of the wide seat
①The comparison of the contact surface with the seat| |tt||?Skin soaking time
③Up and down movement of the tie rod after assembly
?Xu paint quality
9
S-2
A
2
65
3
4
3
6.2.4 Determination rules
IB/T 6941 - 93
6.2.4.1 When the number of unqualified items in the inspected category is less than or equal to the qualification number Ac, the category is judged to be qualified. 6.2.4.2 When the number of unqualified items in the inspected category is greater than or equal to When the unqualified judgment number is Re, the category is judged to be unqualified. 6. 2.4. 3
When the inspected product is judged to be qualified in the A and BC categories, the entire batch of products is judged to be qualified. , otherwise it will be judged as unqualified. Marking, packaging, transportation, storage
7
7.1 The label should be fixed on the uppermost case tube or pipe joint of the product. The label should include the following: a.
c.
d.
Product name:
Manufacturer name:
Product model or mark:
Factory number or date.
7.2 Packaging
7.2.1 Pipes and tie rods can be packed in parts. Each bag should be bandaged in no less than two places, and the weight should not exceed 50kg. The threads should be bandaged to prevent damage to the threads.
7.2.2 Other parts should be packed in boxes. The pump cylinder, cylinder, cylinder, piston, etc. should be wrapped with impermeable paper or plastic after assembly and firmly fixed in the packaging box.
7.2.3 Random technical documents should include:
a.
Packing list:
b.
Product manual: ||tt| |c.
Product certificate.
7.3 The product shall not be damaged during transportation or handling. 7.4 The product should be stored in a warehouse or shelter protected from snow, and some matching surfaces should be coated with anti-rust oil to ensure that they will not rust within one year. 8Quality Guarantee Period
As long as the user abides by the installation and use regulations of the product, within one year from the date of shipment of the product, if the defective side of the product cannot work normally, the manufacturer shall repair or repair the product free of charge for the user. replace. Additional notes:
This standard is proposed and centralized by the Hohhot Animal Husbandry Machinery Research Institute of the Ministry of Machinery Industry. This standard is drafted by the Hohhot Animal Husbandry Machinery Research Institute. The main drafter of this standard is Zhu Zhenchen.
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