Some standard content:
SY 528691, Standard of Petroleum and Natural Gas Industry of the People's Republic of China
Ground Block
Published on July 19, 1991
Ministry of Energy of the People's Republic of China
Implemented on December 1, 1991
1 Subject Content and Scope of Application
Standard of Petroleum and Natural Gas Industry of the People's Republic of China for Ground Block
SY 5286-91
This standard specifies the model, type and basic parameters, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage of ground blocks.
This standard applies to the design, manufacture and acceptance of ground blocks used for supporting well-drilling machines in minor repair operations of oil and gas wells and for lifting equipment in drilling and drilling operations.
Cited standards
SY 5301
SY5302
SY 5304
SY5305
SY5306
SY 5307
SY 5308
SY 5309
General technical conditions for carbon steel and ordinary alloy steel castings for petroleum drilling and production machinery products General technical conditions for grey iron castings for petroleum drilling and production machinery products General technical conditions for forgings for petroleum drilling and production machinery products General technical conditions for welded parts for oil drilling and production machinery products General technical conditions for machining of petroleum drilling and production machinery products General technical conditions for assembly of petroleum drilling and production machinery products General technical conditions for painting of petroleum drilling and production machinery products General technical conditions for packaging of petroleum drilling and production machinery products Product nameplate
Type and basic parameters
3.1 Type
The basic type of the floor pulley is a single fixed pulley structure. 3.2 Basic parameters
Basic parameters of floor block are shown in Figure 1, Figure 2 and Table 1Figure 1
Approved by the Ministry of Energy of the People's Republic of China on July 19, 1991Figure 2
Implementation of 1991-[2-01
3.3 Models
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Table 1 Basic parameters of floor block
Maximum load, kN
Radius of arc at bottom of pulley groove (R), mm
Radius of arc at center of lifting ring (r), mmWidth of lifting ring opening (B), mm
Diameter of wire rope (d), mm
Model level.
The code of floor block is represented by the first letter of the Chinese pinyin of the two characters "地" and "车". Example: 90kN floor block: DC10.
3.4Those who have special requirements for the structure and performance of the floor pulley should consult with the manufacturer. 4 Technical requirements
4.1The manufacture of the floor pulley shall comply with the requirements of this standard and shall be manufactured according to the drawings and technical documents approved by the prescribed procedures. DC20
4.2The materials used in the product shall comply with the corresponding national standards or industry standards, but shall not use steel plates with a minimum service limit of less than 230MPa.
The ratio of the shear screen service limit to the tensile yield limit is 0.58. The various steel materials used for the product shall have the quality certificate of the manufacturer. If there is no quality certificate, chemical composition analysis and mechanical property tests shall be carried out, and only qualified ones can be used. bzxz.net
4.3The materials specified in the drawings may be substituted, but the product performance shall not be reduced after substitution. 4.4The standard parts and purchased parts used in the floor pulley shall comply with the provisions of the design drawings. 4.5Castings shall comply with the provisions of SY5301 and SY5302. 4.6Forgings shall comply with the provisions of SY5304.
4.7 Technical requirements for welding, mechanical processing, assembly, painting, packaging, etc., if not clearly specified in this standard, shall be implemented in accordance with the corresponding contents of SY5305, SY 5306, SY 5307.SY 5308.SY 5309. 4.8 The depth of the pulley groove h is (1.33~1.75) d. 4.9 Defects on the non-machined surface of the ring can be eliminated by grinding. The grinding area should be smooth and the size of this area shall not be less than the minimum limit size of the forging.
4.10 The main force-bearing parts shall be inspected by non-destructive testing, and there shall be no defects that affect the full use of the product. Before assembly, the bearings and lubricating oil holes shall be cleaned; grease shall be added according to the requirements of the drawings. 4.11
Turn the pulley by hand, it should rotate flexibly and smoothly, without blocking and abnormal sound. 4.12 The bending safety factor of the pulley shaft, the lifting ring shaft and the lifting ring bent rod is n, = 0.67. When calculating, the bending allowable stress is selected according to the following formula 4.13
(o,) = 0.60g
Where:
SY 5286-91
【a】—permissible yield limit of the material, MPad—yield limit of the material, MPa.
4.14 The rated dynamic load value of the pulley bearing shall be determined according to the following formula: C
C, = 375
Wu Zhong:
Ch—the calculated value of the rated dynamic load of the pulley bearing, kN. Load), N.
C—Rated dynamic load of a pulley bearing (refers to the load of 90% of the bearings at 100r/min with a minimum service life of 3000h) 4.15 All threaded joints must not be loose, and anti-loosening devices must be available. 4.16 The exposed surface of the floor block should be flat and smooth, without burrs, hammer scars, or obvious bumps and scratches. The paint should be evenly and completely painted, and the color should comply with the requirements of the drawings.
5 Test methods and inspection rules
5.1 Factory inspection
Each floor block should be inspected before leaving the factory, and can only leave the factory after passing the inspection. 5.1.1 Check the sliding condition of the pulley bearing, which should comply with the requirements of Article 4.11 Regulations, 5.1.2 Check all threaded connections, which shall comply with the provisions of Article 4.15. 5.1.3 Check whether the pulley rotates flexibly, which shall comply with the provisions of Article 4.12. 5.1.4 Check the appearance quality of the floor pulley, which shall comply with the provisions of Article 4.12. 5.2 Type test
5.2.1 Type tests shall be carried out on new products or old products with major improvements in structure, materials, and processes that may affect product performance. For series of products with the same design but different sizes: two intermediate-level products shall be selected for testing, and the test results shall apply to all products in the series.
5.2.2 Products undergoing type tests shall be graded and loaded to the maximum test Load value. Each level of load shall be repeated at least once. The maximum test load value is equal to the maximum manned load of the floor pulley. The maximum manned test load loading time is 15 minutes, and the rest is 3 minutes. 5.2.3 On the test product, strain gauges are used to test the stress values under each level of test load where high stress is expected. The measured stress values shall not exceed the design allowable values.
6 Marking, packaging, transportation and storage
6.1 The product nameplate of the floor pulley shall be fixed at the position specified in the drawing. The nameplate shall comply with the provisions of JB8. The content of the nameplate is as follows:, floor pulley model;
b. Maximum manned load, kN:
c. Basic applicable wire rope Diameter, mm;
d Overall dimensions, (length × width × height) mm; e. Mass, kgi
f. Date of manufacture and number:
g Manufacturer name.
6.2 Before packaging, all working surfaces of the floor block are coated with anti-rust material, and other surfaces are coated with red anti-rust paint. 6.3 The floor block should be shipped in boxes.
6.4 The floor block must not be dragged on the ground during transportation. 6.5 During the storage period of the floor block, there should be reliable rainproof, moisture-proof and sun-proof measures. 6.6 The accompanying documents should include the following contents
: Product instruction manual;
b, product certificate;
SY 5286--91
c. Delivery list and packing list
6.7 If the user complies with the requirements, use and maintenance specified in the product manual, within 18 months from the date of shipment from the manufacturer: if the product cannot be used normally due to manufacturing quality or material defects, the manufacturer shall be responsible for free repair or replacement. Additional instructions:
This standard is proposed and managed by the Professional Standardization Technical Committee for Petroleum and Natural Gas Exploration and Development Equipment and Materials. This standard is drafted by the Second Petroleum Machinery Plant of China National Petroleum Corporation. The main drafters of this standard are Wen Liancheng and Gao Guilan.
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