JB/T 2231.4-1999 This standard is a revision of ZB J72 011-87 "Annular valve discs for reciprocating piston compressors". The main technical content changes are as follows: - The standard used for the materials used to manufacture the annular valve disc has changed; - The technical requirements for the surface roughness of the two planes of the valve disc have been modified; - The acceptance rules for the valve disc have been appropriately modified. This standard is the fourth part of the JB/T 2231 "Reciprocating piston compressor parts" series of standards, which includes the following 5 independent components: JB/T 2331.1: Shaft and pin outer dimensions JB/T 2331.2: Cylinder diameter JB/T 2331.3: Thin-walled bearings JB/T 2331.4: Annular valve discs JB/T 2331.5: Valve installation dimensions This standard specifies the classification, technical requirements, test methods and inspection rules, marking, packaging and storage requirements of annular valve discs for reciprocating piston compressors. This standard applies to the annular valve disc of the annular gas valve of reciprocating piston compressors. This standard was first issued in 1977 and revised for the first time in 1987. JB/T 2231.4-1999 Reciprocating piston compressor parts Part 4: Annular valve disc JB/T2231.4-1999 Standard download decompression password: www.bzxz.net

[CS 23.140
Machinery Industry Standard of the People's Republic of China
JB/T2231.4-1999
Reciprocating piston compressor part-subassemblyPart 4: Ring-type valve Issued on July 12, 1999
National Bureau of Machinery Industry
Implementation on January 1, 2000
JB/T2231.4-1999
This standard is a revision of ZB1720118 "Annular Valve Plate for Reciprocating Sewage Compressors". Compared with ZBJ72011-87, the main technical contents have been changed as follows: 1. The standard used for the sealing material of the annular valve plate has been changed; 2. The technical requirements for the surface tolerance of the two planes of the valve plate have been revised; 3. The acceptance criteria for the valve plate have been appropriately revised. This standard is the fourth part of the series of standards [B/T2231 Reciprocating piston press machine lifting components]. The series of standards includes the following five independent components: Part 1 (i.e. old/F2331.1): Shaft and pin outer diameter dimensions Part 2 (i.e. JB/T2331.2): Cylinder diameter Part 3 (i.e. 1B/2331.3): Thin-walled bearing Part 4 (i.e. JB2331.4: Annular foot piece Part 5 (i.e. JB/233E.5: Cylinder diameter This standard replaces J72011-87 from the date of implementation. This standard is proposed and approved by the National Technical Committee for Standardization of Compressors. Drafting unit of this standard: Shanghai Compressor Factory Main contributors of this standard: Zheng Hankang, Jin Dongshou, Scope
Machinery Industry Standards of the People's Republic of China
Reciprocating Piston Compressor Parts
Part 4: Annular Valve Plate
Hccipruculingpiston corapressorpart-gubasgembbyParl 4:Ring-type valvr plateJB/T2231.4—1999
This standard specifies the classification, connection requirements, test methods and acceptance criteria, marking, packaging and storage requirements of annular valve plates for reciprocating piston compressors.
This standard is applicable to annular valve plates for annular gas lubrication of reciprocating piston compressors (hereinafter referred to as ring-type valve plates). 1. Referenced standards
The following standards contain additional texts that constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised. The parties using technical standards should explore the possibility of using the latest versions of the following standards. GB/T 3280—1992
GB/T11254—1989
3 Product classification and marking
Stainless steel cold-rolled steel plate
Hot-rolled thin steel plate for compressor plate
3.1 Valve plate structure See resistance 1, outer diameter D, inner diameter d, thickness eagle dimensions shall comply with the provisions of Table 1, Table 2 and Table 3 Figure 1
Approved by Beijing Machinery Industry Bureau on July 12, 1999 and implemented on January 0, 2000
Tritr:
Polar eye difference
Multiply this dimension
.-0.100
: 174
JB/T2231.4—1999
Limit deviation
This version shall be after
+0 100
Note: The specifications listed below the solid line in the table should not be used as much as possible. Class 1 valve plate
0:0207
a ± 0.05
[I1172
G 0362
ti03 light
When the scale is ten
J8/T2231.4-1999
Table 2 Class II valve plate
Guideline difference
+0 115
Note: The specifications listed below the solid line in the table should not be used as much as possible. 1.5
t 03i4
center[1425
0 0863
) (290)
01129h
Basic civil indicationwww.bzxz.net
Limit tolerance
19℃
Basic minimum size
Note, the solid line in Table I is used as the full list JB/E2231.4—1999
Table 3 is called valve plate
Valve plates are divided into the following categories according to width (Dd): 3.2
Class I indicates that the width of the plate is 7.5mum:
Class II indicates that the width of the plate is 10rm:
Class II indicates that the width of the plate is 12.5mrl. 3. 3
The grouping of various valve plates is shown in Table 4.
012 years old
Table 4 Adjustment grouping
Same-gas machine neighbor
Ring-shaped adjustment piece external light difference
0 E286
Same average light neighbor
Pressure-shaped pressing piece actual difference
JB/T2231.4-1999
Table 4 (end)
Standard: In the same gas network, under the request of the minister for installation, the service type of film is allowed to be delivered with other sizes, self-sales management 265
Special requirements are allowed in Table 】, Table 2, Table 3. When the sizes specified in Table 2 and Table 3 cannot be met, the majority are allowed within the current specifications. The outer diameter size is combined within
,
3.5 Marking example
[Class threshold film outer diameter D-0mm: thickness = 2 mm, should be marked as HI 60×2JR/T2231.41999
m Class smoke film outer diameter -0 nm. Thickness S=2 mm, should be marked as HI60×2JDT2231.4--[999
Technical requirements
4.1 The design shall comply with the requirements of this standard and be certified according to the drawings and technical documents approved by the prescribed procedures. 4.2 Materials
The film material shall be made of steel plates specified in Table 5, and other materials that can ensure the design requirements may be substituted. 4. 2. 11
Table 5 Valve plate material
30CrMnSiA
4Cr13Mo
Standard code
GO.T 11254—[989
GBT3280—1992
1.2.1When the valve plate is made of 4Cr3M steel plate, the chemical composition shall comply with the provisions of Table 6 Table 64C113Mo Chemical Composition
0.35-4.45
0.50-1.Go
Specification
Thin plate for pressing machine
Stainless steel
JB.T2231.4-1994
The surface roughness R of the two planes of the plate shall not be less than 0.4±, and the roughness between the inner and outer layers shall not be less than 0.8μ. 4L
The thickness tolerance of the same plate shall comply with the provisions of Table 1. Table 7 Circular tolerance
Radial (net one is correct)
Valve disc width difference in the same direction of diameter shall comply with the provisions of Table 8. 4.5
Table radial width difference
Valve disc flatness tolerance shall comply with the provisions of Table 9. The same diameter shall be the difference between the two diameters
Table 9 Flatness tolerance
>65-140
>140-200
>249-300
>3-360
The hardness and metallographic structure of the valve disc shall comply with the provisions of Table 1. The valve disc with a diameter less than or equal to t.0mm shall be measured with its approximate hardness value, and its conversion shall comply with the provisions of Table 10.
Valve disc hardness and metallographic structure!
Meeting period
Same fire martensite
4.8 The mesh should eliminate burrs, and the edge of the end face should be R0.1-R0.3mm. The same adjustment piece has a different degree of hardness
4.9 The finished mesh should not have gauge marks, scratches, hardness tester marks and other defects that affect fatigue resistance. 4.10 The mesh should be removed and finely ground to eliminate internal stress. Under normal working conditions of the compressor and air lubricant, the replacement period of the mesh should not be less than the line in Table 11. 4.11
Network of air compressor
Micro-pneumatic
Diaphragm air compressor
High oxygen compression
Medium and high wind halogen compressor
S Test method and acceptance rules
Error|||5.1 Valve plate material quality certificate
JB/T2231.4—1999
Valve plate replacement
21.6~10! 10)
16-10 (small including 19)
5 The size and quality of the steel sheet shall be tested according to the quality standards, product drawings and technical documents before it can leave the factory.
5. The metallographic structure and hardness of the pieces shall be sampled in batches for testing. The sampling piece shall be sampled according to the secondary sampling plan specified in Table 12. Table 12
I1--5(KXK)
,1-10U
Single sampling plan
Small sample size
Normal judgment item
No special item
5.4 The flatness of the sample should be measured on a flat plate with a round feeler gauge 0.01mm larger than the allowable value. Those that do not meet the requirements are prohibited. 6 Packaging, marking and storage
「, 1 The surface of the sample should be coated with anti-rust agent, and the packaging materials that are not hot or corrosive should be selected for packaging. After 2 packaging, the sample should be stored in a dry and non-corrosive warehouse for a period of not less than 1 year JR/T 2231.4—1999
6.3 The valve piece after packaging should be accompanied by a product certificate, which should include the following contents: a) factory name and address; b) product name and format (D×d:
c) quantity; d) material mark; f) manufacturing date; g) signature of the inspection department; g) production batch number and manufacturer's mark.
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