Some standard content:
1CS23.100.30
Machinery Industry Standard of the People's Republic of China
JB/T103682002
Hydraulic Throttle Valve
Hydraulic luid puwerthruttleyalve2002-12-27issued
2003-04-01implemented
issued by the State Economic and Trade Commission of the People's Republic of ChinaForeword
2 Specification document
3 Terms and definitions
Prohibitions, symbols and units
5 Marking of essential numbers
5.1 Marking.
53 Essential parameters
6 Technical requirements.
Extreme requirements,
Performance requirements
Assembly requirements
Appearance requirements.
Performance test method
Inspection assembly
Test items
Inspection items schedule discussion method
Assembly appearance inspection
Inspection specification.
S. Inspection classification
Standardized to
1. Bad record, packaging, transportation storage
Appendix A (normative appendix) Test circuit and test curve A. "Or test circuit
A.2. New performance line
Test principle
Let pressure-internal leakage line
System pressure-external full surface line
Flow positive pressure reporting curve:
Flow-reverse pressure reporting curve
Environment..6. Flow-pressure difference characteristic line.
Figure-adjustment characteristic line.
Expectation, derivative number and unit
The display value of the secret control parameter is allowed to change in Table 3:
Measurement system internal error system setting difference
Table 1 shows! Test items and test methods
5 Type test items and test methods
6 Assembly and appearance inspection methods
JB/T10368—2002
JTI/T1036B—2002
A Normative Appendix to this standard
This standard was proposed by the China Machinery Industry Federation. Foreword
The standard is organized by the National Hydraulic and Pneumatic Standardization Technical Committee, and the standard drafting units are: Beijing Huade Industrial Press Co., Ltd., Dazaohe Machine Tool Research Institute Hydraulic Correction Technology Engineering Co., Ltd. Feidian Machinery Industry Automation Research Institute.
This standard is drafted by: Yu, Shuguang, Liu Xinde. This standard is issued for the first time.
1 Scope
Hydraulic throttle valve
JR/T F036B—2002
This standard specifies the basic parameters, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage requirements of hydraulic throttle valves, one-way throttle valves, travel throttle valves and one-way travel throttle valves (hereinafter referred to as throttle valves). This standard is used for hydraulic oil or other fluids equivalent to grease! The following documents are used as reference documents of this standard. For the reference documents with the specified date, all the subsequent complete documents, including the revised version, are applicable to this standard. However, the parties to the recent agreement on this standard are encouraged to use the latest versions of these documents. For the reference documents with no specified date, the original version is applicable to this standard. G/T786.1 Pneumatic symbols (GB/T786.J—1993.eqI501219-1:1991.Fuidpowelsysrensandconponents ...Graphic sym'sols aad circuil diagrams—Part L:Graphic sym'sols aad circuil diagrams—Part L:Graphic symhls: GB/I2346 Hydraulic and pneumatic systems and components Nominal pressure series GB/T2≤14 Oil return port wrench type hydraulic layer direction control measurement installation surface (eqVIS0440t: 1980) RT2828 Sample sequence and sample table for batch inspection (applicable to inspection of ten-pin hydraulic parts threaded connection oil port type and size GB/T2878
GB.T 7935
Technical conditions for the application of corrective components
Compared hydraulic flow disc valve installation surface
G8T8000
Roller medical porcelain installation surface
GR.T1-402920 Door business transmission oil hazardous body particle pollution: grade code CIB/143920M2, [SO4406: 19, MOD
Fluid transmission system modification terminology (0B/T1744G-1998, tI505598: 1985GB/T1744G
GBT[7489
According to the material pollution frame analysis from: system pipeline extraction wave bar (GB/T17489-1998: 1504021: 1992:
JHT 7858 Hydraulic component reliability determination method and hydraulic component cleanliness index 3 Technical explanation and definition
GB17416 and the following standards and definitions are used in this standard - 3.1
Common flow rate zominaltow
Medium flow valve name three specified in the standard,
Test flow rate testm
Test the flow rate specified when testing the performance of the test object. 4 Quantity, symbol and unit
Quantity, symbol and unit table
JB/T103682002
Two public ring diameter
Yang in the plain craftsman
Snow making inner diameter
Wang Da, jade sign
Oil quality cloth piece
Etc. Tower type elastic modulus
juice: M-L
Marking and basic data
5.1 Marking
Length: Tbzxz.net
Quantity, symbol and unit
Time. e
Meanwhile,
ML-I·
Make a clear and permanent mark or nameplate in a conspicuous position on the product. The inner part of the marking shall comply with the provisions of 5 below. The medical symbols used shall comply with the provisions of GB/T86.1. 5.2 Basic effective data of the throttling steel shall include: special diameter, nominal pressure, nominal flow, rated flow. 6 Technical requirements
6.1 General requirements
6.1.1 The nominal pressure series shall comply with the provisions of T2346. 6.1.2 The plate connection mounting surface shall comply with the provisions of GB/T2514, and the mounting surface shall comply with the provisions of GB3/T809. 6.1.3 The type and size of the spiral connection L shall comply with the provisions of GB/T2878. 6.1.4 Other technical requirements shall comply with the provisions of GB/T7935. 6.1.5 The manufacturer shall explain the applicable conditions and environmental requirements of the product in the product sample and related materials. 6.2 Performance requirements
Liquid throttling solution performance requirements include:
Working seat pressure range:
The quantity adjustment book:
Internal leakage:
External communication address;
Force type:
Adjustable force:
Sealing: In rated working state: If the throttling valve is sealed, it must not Standard, the sealing effect shall not be insufficient. Pressure resistance: The main port of the common flow should be able to withstand 1.5% of the maximum working pressure of the pool, and there should be no leakage and parts damage.
6.3 Assembly requirements
The assembly should be in accordance with the provisions of GBT7935,
6.3.2 Internal deactivation requirements should be in accordance with the provisions of B/17858, 6.4 Appearance requirements
The appearance of the product should comply with the provisions of GB.T7935. 7 Performance test method
7.1 Test device
71.1 There is a test bench that meets the test requirements shown in Figure A.1. 7.1.2 Oil plastic plate and pressure
The flow of the oil source can be adjusted, and the test flow is too sensitive to the test. Note that the force of the source can be short-term 20%~30% of the nominal force of the test. JB/T10368—2002
7.1.3 The valve should be installed at the middle of the given circuit to ensure the safety of the test system. 1. The power of the certified valve should not be affected:
7.1.4 The inner diameter of the pipe and pipe joint connected to the test valve should be consistent with the actual diameter of the test valve: 7.1.5 Position of the observation point:
7.1.51 The inlet measuring point should be placed between the lower static of the disturbance film (such as steel, elbow, etc.) and the test valve, and the distance from the source of motion should be not less than (4 is the inner diameter of the pipe): the distance from the test valve should be less than. 7.1.5.2 The pressure measuring point is set at least 1000 meters downstream of the test hole. 7.1.5.3 When measuring the pressure, the position of the measuring stop point is allowed to be inconsistent with the above requirements, but the corresponding correction value is given at the bottom. 7.1.6 Hole;
7.1.6.1 The diameter of the measuring hole should be no less than 1rm, and no less than 67.1.6.2 The length of the pressure hole should be no less than 2 times the diameter of the pressure hole: 7.1.6.3 The screen line and the axis of the pressure hole should be vertical, and the intersection of the inner surface of the pipeline with the measuring hole should be sharp, but without burrs. 7.1.6.4 The inner diameter of the connecting pipeline between the measuring point and the measuring instrument should be no less than Tm. 7.1.6.5 When the measuring point and the measuring instrument are reversely connected: the air in the connecting pipeline should be removed: 7.1.7 The temperature measuring point should be set up in the test inlet and outlet of the pressure measuring point. 7.1.6 The liquid sampling point should be set up in the test loop according to the provisions of GB17489. The liquid sampling point and the sampling belt should be set up in the test loop. 72 Test case 2.1 The test medium is carried out under the condition of tt.
The test medium is a hydraulic oil.
The test medium temperature: Unless otherwise specified in the specification, the type test shall be carried out at 50°C. The test shall be carried out at 14°C. The test material is: 40°C. The movement of the test material is 42mm~74m (Special requirements are specified: Test individual quality: The test system slow body residual cold dyeing temperature shall not be higher than that specified in G/T140392 (K2). 7.2.1.4
-119116,
7.2.2 Steady state
When the average value of the controlled parameter is displayed When the change of the displayed value does not exceed the specified value in Table 2, it is considered as a steady state. The following table should be used to record the allowable change range of the average displayed value of the controlled parameter in Table 2. The control state display
(%)
measurement accuracy, etc. See 7.2.4
The allowable change of the average displayed value of each measured accuracy or the corresponding basic control quantity is also measured using A
JB/T1036B—2002
table test
7.2.2.2 During the type test, the selection of the test quantity and the distribution of the readings taken should be able to reflect the performance of the test valve in the entire area:
72.2.3 In order to ensure the repeatability of the test parameters, the test parameters are measured within the specified time. 7.2.3 Test selection
72.9.1 When the rated flow of the test valve is less than or equal to 2001/min, the test display is the rated value: 7.2.3.2 When the rated flow of the specified test valve is greater than 2001/min, the test flow is allowed to be reduced to 200L/min, but it must be evaluated under working conditions. The performance indicators of the test valve must meet the requirements of the working ratio: 7.2.3.3 The factory test is carried out in full detail, but the corresponding correction values should be given to the performance indicators. 7.2.4 Measurement accuracy, etc. The measured accuracy is divided into three levels: B, C, and the type test should not be lower than level D: the factory test should not be lower than level C. The allowable error of the measurement system corresponding to each level should comply with the provisions of Table 3. Table 3 Allowable system error of the measurement system
Number of auxiliary measuring instruments and meters
Correction (pressure pC.2MP
HTable 0.2MP
Degree of accuracy T
7.3 Test items and test methods
7.31 Test items
Test items and test methods are specified in Table 4: 7.3.2 Type test
Type test items and test methods are specified in Table 4. The allowable benefit of each measurement accuracy item on the measurement system is H
Table 4 Factory test items and test methods
Test items H
Pressure resistance
Xie Fanyuan
The bubble is strong and obvious
To the limit force increase
At a rate of % per second: for the customer pressure port, add 1.5 of this oil port to the highest working pressure, and then judge the operation life 5:
actual cut test 4 inlet and outlet jade difference as the development of the guarantee work standard pressure value, adjust the test piece 4 from the opening rate: then the team uses the full full element, with the large color change, the wine is measured by the source of the home, the continent eliminates the Area. Test for not less than ten times, fully close the flash plate, and then increase the flow rate to make the system's light port area pressure be the nominal pressure: after they can be heard by the valve 4, make the 4 open or close automatically: 30 use the test network's 4 plan measurement,
test the regulator 4 to the fully open position, and restore the flow through the microvalve 4 as the test flow, the pressure gauge 3-1 initially records the pressure 3-2, and the positive pressure loss caused by the closure is the test plan 4.
Test items
Force loss
Test items
Full-fledged factory delivery
Table 4 (continued)
Test force
Two sections of the tested steel are to the fully open position, and the manual direction is changed to the standard: calculate, so that the flow plate of the test plate 4 is passed through the whole test or quantity, use mutual force support: 13-2 force measurement, the reverse force of the type is slow head, open the test network 4 and close the correction section 6, the agent controls the flow 2, so that the system effectiveness is the nominal force of the cut-off test valve 4: 3Us after the oil port of 4 is blocked
light will be drawn to the drum test plate, if all can not be pulled clean at once, it will produce a "false" leakage phenomenon after operation, then it is allowed to fill it up again and check the seal lightly and divide it into two categories:
(1) The whole system water seal is clean and black, and the static seal is removed in time. If there is a mark of oil on the low water absorption, it is oil. 2) When the seal is dynamic, place a date system below the seal. After the whole test, if there is oil on the white paper, it is liquid oil. Table 5 Type test items and test methods
Identification test method
JB/T1036B2002
Elimination type
7.3.1 of the current test all of them, and draw the appropriate line pressure before the test a: When the internal explosion test is carried out, the inlet pressure of the test object is gradually increased to the nominal pressure, and individual points are set during the period. The specified measurement points should be sufficient to support the inlet reaction force-leakage current volume line:, measure the internal pressure of the test object one by one, and draw the inlet pressure-leakage curve (see 2):
b! In the external leakage test, the system pressure of the test object is gradually increased to the nominal pressure! , during which the coal plant has a small measuring point (the number of measuring points set should be enough to draw the system's huge force-external disease line), measure the external injection of the test valve 1 point by point, and make the system three-force-external leakage line (Figure A.3)
has a leakage pattern to give a typical line.
) When the pressure in the working direction is limited, make the appropriate reduction through the entire test room 4 to gradually increase the test control flow, during which several brush points are set (the number of measuring points set is enough to describe the positive pressure distortion of the test river: point by point the remaining amount of the positive pressure loss of the test river: make a typical line of positive pressure distortion loss (see Figure A.4:
) When the pressure in the area is expected to lose, make the flow through the test network 4 in the reverse direction increase from zero to the test profit, during which several tolerance points are set (the set measuring points should be enough to draw the reverse pressure loss of the test network), and make a test with consecutive point measurements. Measure 4 of the same force and the girl for a long time, will build a reverse pressure double loss reduction (Ketu A51
system world national line
only one-way frequency and single stroke learning experience! The amount of test 4 training oxygen fire, cattle, small two one positive degree position (people production degree sharing index was recognized network + full time opening and: small and degree system refers to the board test 4 import and export mutual length for the next force Chen volume underestimated pressure ticket
adjustment force can
through the flow of flow Xie Fan Sheng Dan hours opening: planning opening safety system index model test average 4 large and small opening between the environment to be close to the middle sympathy time opening", respectively adjust the signing flow reading 2 and make flow 6. Increase the flow rate through the test fine 4 from the pregnant opening to the test pregnant disk. During this period, several statutory marking points are set (the number of measuring points to be read is sufficient to describe the sludge pressure difference characteristic curve), and the correlation between the pressure change during the flow rate is measured at the connected points, and the original differential characteristic of the building is drawn (see A stone). When the throttling is fully opened, the set is close to 1, and the overflow is 2 and the test width 4. The reverse limit 4 is: the pressure near the mouth is the special pressure, and the flow rate through the test type 4 is the test cavity flow. After adjustment, no oil shall pass through the trap 2. After heating, adjust the test type 4 to the fully open position. Then from the whole: open the transmission without snow to the lower part of the public pressure position, the technique of wide 4 return to the limit of the pressure has been prepared
no one-way flow worry
reading and one-way flow to the book
practice test
only for the flow reading:
one-way flow test
beneficial changes:, during which set a number of measuring points (and the number of measuring points should be set to draw the inlet force distance curve), use the large remote point to measure the test section during the section torque, draw the inlet pressure torque average curve (see Figure A.7), 5
J8/T1036B——2002
Assembly and appearance inspection
Assembly and appearance inspection methods shall be in accordance with the provisions of Table 6. 6 Assembly and appearance inspection methods
9 Inspection rules
Inspection classification
Inspection items
Assembly quality
Internal analysis and estimation
Multiple quality
Product inspection is divided into! Inspection and type inspection, factory inspection
Control market law
County Bay delivery
According to the provisions of TB/T7858.
Tested.
Factory inspection refers to the various tests that should be carried out when the product is delivered. Type of inspection
The items and methods of performance inspection shall be in accordance with the provisions of 7.3.1. The performance requirements shall be in accordance with the provisions of 6.2. The inspection methods of packaging and appearance shall be in accordance with the provisions of 8.3. The quality shall meet the requirements of 6.4. 9.1.2 Type inspection
Type inspection refers to the comprehensive assessment of product quality, that is, full inspection according to the specified technical requirements. Formal inspection shall be carried out for any of the following situations:
Business: Trial production and identification of new or old products; h! After the actual production, such as drug structure, material, etc., which may affect the performance of the product; c! When the product is suspended for a long time: When the inspection results are significantly different from the results of the last type inspection; e! When the national quality supervision agency proposes the type inspection requirements. The items and methods of performance inspection shall be in accordance with the provisions of 7.3.1. The performance requirements shall be in accordance with 6.2. The inspection methods of packaging and appearance shall be in accordance with 8.3.1. The quality shall meet the requirements of 6.4. 9.1.2 Type inspection
Type inspection refers to the comprehensive assessment of product quality, that is, full inspection according to the specified technical requirements. Formal inspection shall be carried out for any of the following situations:
Business: Trial production and identification of new or old products; h! After the actual production, such as drug structure, material, etc., which may affect the performance of the product; c! When the product is suspended for a long time: When the inspection results are significantly different from the results of the last type inspection; e! When the national quality supervision agency proposes the type inspection requirements. .3.2 is completed, the performance requirements meet the requirements of 6.2, the inspection of bag matching performance is in accordance with the provisions of Article 8, the quality meets the requirements of 6.3 and 5.1, 9.2 Sampling
The selection plan for product inspection shall be in accordance with GB/T2828: Note: The relevant provisions of the random inspection and reporting shall be implemented at the latest. 9.2.1 Sampling for factory inspection
Let: Grid quality level (AQL value): 2.5: 5) Sampling plan type: normal inspection, sampling rate: Inspection level: general inspection level: Pressure resistance test sample size is 0.3, but not less than two units: 9.2.2 Sampling for type inspection
u) Grid quality level (AQI blue): 253) Sampling plan type: Operational inspection including one-time sampling plan:) Sample size: 5 units,
9.2.3 Sampling for internal cleanliness inspection
4) Acceptable quality level (AQL value): 2.5:) Sampling plan type: normal inspection-second sampling plan:) Inspection level: Special acid inspection level S-2.5
9.3 Judgment rules
According to GB/T2828.
Marking, packaging, remote transmission and storage
Marking, meter, transportation and storage shall be in accordance with the provisions of GB/T7935. Special cases may be specified separately JB/T10368-2002
JE/T10368-2002
A.1 Test circuit
The original diagram of the test circuit is shown in Figure A.1.
(Normative record)
Test circuit and test line
Charging system: 2 Note: 3-1, 3-2—Pressure gauge: 4—Vibration test valve: Flow meter: (—Throttling smoke manual change room drop: Thermometer: 9
Pass: 10 Sweep belt
Test Test circuit principle A.2 Characteristic curve A.2.1 Inlet pressure - internal overfilling output curve see Figure 4.2 A.2.2 System power delivery leakage gradient curve see Figure A.3. A.2.3 Flow - positive force loss curve see Figure A.4. A.2.4 Flow - reverse high force loss curve see Figure A.5. Flow rate difference characteristic curve see Figure A.6
Inlet pressure adjustment force holding bag see Figure?
Figure A.2 Inlet pressure - internal leakage measurement curve
3 System pressure - external leakage characteristic curve
A.4 Flow - positive pressure loss curve
48F110368-2002
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