JB/T 5299-1998 JB/T 5299-1998 Hydraulic control check butterfly valve JB/T5299-1998 Standard download and decompression password: www.bzxz.net

JB/15299—1998
Preface
Previous
This standard is a revision of JB/T5299-91 "General Valve Hydraulic Control Return Butterfly Valve". -91 has made some changes in the following main technical contents: This standard is consistent with JB/T5299-
-
expands the range of nominal diameter;
adds energy storage Hydraulic-controlled check butterfly valve: The angular stroke and time of the fast closing section and slow closing section of the valve are adjusted; the sampling method and judgment principle are added
This standard will replace JB from the date of implementation. /15299--91. This standard is proposed by the National Valve Standardization Technical Committee and is owned by: Hefei General Machinery Research Institute. The main drafters of this standard: Lu Biao, Yu Fang, Peng Yaojian, and Li Bo. [26
1 range
People's Republic of China machinery industry standard
hydraulic control check butterfly valve
Hydraulic control check bullerfly valvesJ13/T52991998
replace JB/ T$29
This standard specifies the basic structural type, requirements, test methods, inspection rules, marking, packaging, transportation and storage of hydraulically controlled check butterfly valves. This standard applies to nominal pressure PN0.25~~2.5MPa. , nominal diameter DN200~3000mm, working temperature is not high "80" (the working medium is water and other non-corrosive media flange and wafer-connected hydraulically controlled check butterfly valve. 2 Reference standards
The following standards The provisions contained in this standard constitute provisions of this standard by reference in this standard. The versions indicated are valid at the time of publication of this standard. All standards are subject to revision. Parties using this standard should consider using the latest version of the following standards. Possibility. GB2352.80 Hydraulic isolated accumulator nominal pressure and volume series GB12220—89 universal valve mark
GB12238---89 universal valve flange and central connection butterfly valve GB/T13927--92 universal valve Pressure test J308
: 75
Valve
Model preparation method
IB/T7928---95 general valve supply requirements JB/Z248: 85 butterfly valve static pressure life Test procedure 3 classification
3.1 Structural form
3.1.1 The basic structural type and main parts and components of the hydraulic control butterfly valve are shown in Figure 1 and Figure 2. 3.1.2 Hydraulic control butterfly valve. In addition to the basic structural types shown in Figure 1 and Figure 2, return butterfly valves are allowed to be designed and constructed in other structural types under the conditions that meet the requirements of this standard:
3.2 Model preparation is in accordance with the provisions of JB308
People's Republic of China. Ministry of Machinery Industry approved on 1998-03-19 for implementation on 1998-07-01
427
4 requirements
4.1 body
a
four||tt ||JB/T5299-7998
Tide cylinder 5·Valve body part: 6 mechanical drive assembly}--Hydraulic station: 2·Electrical appliance: 3 Accumulator: Figure 1
With energy storage Hydraulic control stop butterfly valve of the device
Sugar
·Hydraulic device; 2-hydraulic components; 3. Valve wooden body part··Heavy tank Figure 2 Hydraulic control stop butterfly valve with weight| |tt||The technical requirements and material selection of the parts and components of the body are in accordance with the provisions of G1312238. 4.2 The outer surface of the hydraulic control check butterfly valve should be painted, and the paint layer should be durable and beautiful, and the marking should be clear. 4.3 Opening and closing action and indicating mechanism| |tt||4.3.1 The hydraulically controlled check butterfly valve should have two functions: cut-off and positive check. The closing is divided into two stages: fast and slow. The angle of the fast and slow stages can be adjusted. The adjusted start-up and idle time and angular travel range are as shown in the table. 1 regulations. 128
Off
Note
Item
Open
Valve
H
Valve
Quick Beauty
Manmei
IB/T5299
1998
Table 1 is the adjusted opening and closing time and angle range nominal diameter I)N
en| |tt||1000
:1 000-- 3 000
oan
1 000-3 000
1000
21000-3000||tt ||1 The full merge position is 90\, and the closing position is 0\. Beyond this range, adjust according to user requirements.
2
Adjustable opening and closing time range
10-60
25～120
2·25
3-~ 30
3-~6℃
4---60
4.3.2 The opening and closing of the butterfly plate should be flexible, and there should be an indicating mechanism that correctly displays the opening position of the butterfly plate. , 4.4 Accumulators, weights, locking devices
4.4.1 The hydraulically controlled check butterfly valve should be equipped with additional power sources such as accumulators and weights to prepare for automatic closing of the valve in the event of a power outage. 4.4.2 The technical parameters of the accumulator are in accordance with the provisions of (132352). Travel range
\ 96
90*- 65*-13
65-- 1 3 - || tt||4.4.3 The hydraulic system pressure of the hydraulically controlled check butterfly valve must be stable. The maximum pressure of the system cannot drop by more than 2 MPa within 50 hours after the oil is turned off
4.4.4 Heavy hammer hydraulic system. The control check butterfly valve should be equipped with a locking device according to the user's needs. The locking device should be sensitive and reliable in operation. 4.5 Hydraulic system | Leakage, the discharge pressure of the safety valve or the adjustment force of the relief valve shall not exceed the maximum pressure of the system. 4.5.2 The oil tank shall have an oil mark, and the oil level indicated by it shall not exceed 80% of the height of the oil tank. 4.6 Hydraulic cylinder | |tt||4.6.1 The hydraulic cylinder should be equipped with a dust-proof device. Its surface should be anti-corrosion coating. 4.6.2 The surface of the piston and piston rod should be hard chromium plated. 4.6.3 The hydraulic cylinder should be equipped with a scale scraper. Keep the piston rod clean before uninstalling it. 4.6.4 The piston rod sealing ring and piston ring should be made of oil-resistant materials such as NBR. 4.6.5 Before connecting the hydraulic valve to the valve, a pressure test of 1.5 times the rated T of the system should be performed. There must be no external leakage at the location: then make a full reciprocating stroke, and the movement speed should be stable. 4.7 Shell strength and sealing performance
4.7.1 The shell strength of the hydraulically controlled check butterfly valve should comply with the regulations of (3/T13927). 4.7.2 The maximum allowable leakage of the hydraulically controlled check butterfly valve seal test shall comply with the provisions of GB/T13927. 5 Test methods
5.1 Shell test and seal test
GB/T13927 regulations. 5.2 Opening and closing action test
5.2.1 Conduct the opening and closing action test under no-load and no medium conditions, and check the opening and closing time and speed of the hydraulic control butterfly valve according to the provisions of Table 1. , slow closing angle.
5.2.2 Under the condition of no load and no medium, check the flexibility and reliability of the hydraulic control butterfly valve operation 5.3 from the whole country to the whole country. , Weight action performance test
129
JB/T5299—1998
Cut off the power supply and check whether the accumulator and weight can be used as a power source to automatically close the valve. 5.4 Hydraulic system test.
5.4.1 When the hydraulic system reaches the maximum working pressure, check whether the safety valve or relief valve is opened for unloading and whether the system is stable. 5.4.2
5.4.3
Visual inspection Oil level height.
Turn off the oil pump when the working pressure of the hydraulic system reaches the highest level. After maintaining the pressure for 50 hours, check the hydraulic system! The force value does not drop more than 2MPa
5.5 hydraulic cylinder test
Under no-load conditions, the piston should reciprocate more than 5 times, and it should move flexibly without external leakage 5.5.1
. Under nominal load, the piston should reciprocate more than 2 times in the full stroke, and there should be no abnormal phenomena such as crawling. 5.5.2
5.5.3 Under nominal load, the piston reciprocates the full stroke 20 times. There shall be no external leakage at the piston rod seal. 6 Inspection Rules
6.1 Factory Test
6.1 .1 The out-of-market test must be carried out one by one
6.1.2 The out-of-factory test shall be carried out according to the provisions of Table 2. 6.2 Type test
6.2.1 When any of the following situations occurs, type testing should generally be carried out: a) Trial prototype identification of new products or old products transferred to factory production; b) After formal production, if there are major changes in structure, materials, and processes, the product may be affected. performance; c) when the product resumes production after a long-term suspension; d) when the factory test results are significantly different from the last type inspection; e) when the national quality supervision agency proposes type inspection requirements. 6.2.2
Type test shall be carried out in accordance with the provisions of Table 2.
Table 2
factory test and type test
inspection items
shell test and sealing performance
opening and closing action test
Function test, weight action test
Hydraulic system test
Hydraulic cylinder test
Note: "→" is the inspection item,
6.3 Sampling method
Inspection Category
Dehiro Inspection! Type inspection
required
required
according to the provisions of 4.www.bzxz.net
according to the provisions of 4.3
according to the provisions of 4.4
according to 4.5 According to the regulations in 5.| ||According to the provisions of 5.4.1 and 5.4.2
According to the provisions of 5.4.3
According to the provisions of 5.5
6.3.1 The type test shall be randomly selected for inspection by the production quality inspection department Qualified valves in stock or unused valves supplied to users: The minimum number of valves for each model and specification for sampling shall be as specified in Table 3 6.3.2
6.3.3 when supplied to the user for sampling. The number of sampling units is not limited by Table 3. The number of sampling units is still as specified in Table 3. 130
Nominal diameter 1)N
mm
200~350
400 ~~600
600
Table 3
JB/T5299--1998
Minimum number of sampling units and sampling units
Minimum number of sampling units
15
10
L
draw
sample
3
number
6.3.4 When conducting quality assessment on the entire series, the sampling inspection department can select 2 to 3 typical specifications from the series for testing according to the situation. The number of units for sampling and the number of sampling units shall be determined according to the provisions of 6.3.3 and 6.4
6.4.1 The key items are 5.1 and 5.2. If one of them fails to meet the specified indicators, it will be judged to be unqualified. 6.4.2 The main items are 5.3, 5.4 and 5.5. If one of them fails to meet the specified indicators, sampling from the supplier is allowed. The specified number of units will be drawn again: If the unit fails to pass the test again, it will be judged as unqualified. 6.4.3 During the random inspection of type test items, if any of the items fails to meet the specified indicators, it will be judged as unqualified. 7 Marking, packaging, storage, transportation and supply 7.1 The marking of hydraulic control check butterfly valve shall be in accordance with the provisions of GB12220. 7.2 After the test of the hydraulically controlled check butterfly valve, the butterfly plate should be opened 4°~5°. 7.3 Before packaging and transporting the hydraulically controlled butterfly valve, drain the oil in the hydraulic system. 7.4 The packaging, transportation and storage of hydraulically controlled check butterfly valves shall comply with the provisions of JB/T7928. 7.5 The supply of hydraulically controlled check butterfly valves shall comply with the provisions of JB/T7928. 131
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