JB/T 9714-1999 This standard is a revision of ZB J20 003-89 "Test Methods for Variable Speed ​​Pumps for Engineering Machinery". The main technical content changes are: - Additions and modifications to the terms; Increases and decreases in the items for type tests and factory inspections; - Changes in the accuracy of test instruments and parameter measurements. This standard specifies the test conditions, test items and test methods for variable speed pumps for engineering machinery. This standard is applicable to variable speed pumps and tests with hydraulic transmission oil as the working medium. This standard was first issued on May 13, 1989. JB/T 9714-1999 Test Methods for Variable Speed ​​Pumps for Engineering Machinery JB/T9714-1999 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T9714-E999
Construction machinery
Transmission pump
Test methods
Construction machinery-.
Test methods of transmission pump1999-08-06Published
National Bureau of Machinery Industry
2000-01-01Implementation
JB/T9714-1999
This standard is a revision of ZBJ20003-89 Mechanical Transmission Pump Test Method. Compared with ZBJ20003-89, this standard has the following major changes: The definition of nominal displacement is added to the specification, and some terms are modified; Table! The blanks are added in the reference, and the relevant symbols are modified in the standard. The 4.4 test method and test signature are added. The original test instruments and instrumentation are cancelled. The content of the measurement of the degree and the amount of the measurement is cancelled. The test point needs to be measured, the stability of the test condition, and the test items of the type test and the factory test items are increased; the original appendix A "Format of the test record table for variable speed pumps" is added. This small standard replaces 2BJ20003-89. The standard is proposed and managed by the following machinery standardization technical committees. The units of this standard are: Tiancheng Machinery Research Institute, Xi'an Hydraulic Parts Co., Ltd., County Engineering Machinery Hydraulic Parts Factory, Fang Machinery. The drafters are: Liu Zongquan, Zhou Hailin, Lu Chuyuan. This standard was first issued on May 13, 1989. Fan Guo
Machinery Industry Standard of the People's Republic of China
Engineering Machinery
Variable speed pump
Test methods
Canstrgclionmachiaery
Test methods of transmisalon pump This standard specifies the test parts, test items and test methods for variable speed pumps for downstream machinery. This standard is suitable for the test of variable speed with hydraulic transmission oil as the working medium. 2 Cited standards
JB/T 9714—1999
7RJ20 N39
The following standards contain provisions and constitute vehicle standards through reference in this standard. When this standard was published, the versions shown are all valid. All standards will be adjusted. Parties using this standard may consider using the latest versions of the following standards. GB/T3767—1996
GB/T793-.1987
G87 79361987
3 Definitions, symbols and units
3.1 Definitions
This standard adopts the following definitions.
3.1.1 Constant pressure
Acoustic sound pressure method to measure the sound power level of the noise source. Reflection surface. General technical conditions for engineering pressure relief parts.
Measurement method for pressure pumps and motors.
The highest pressure at the outlet of the pump that can continuously operate within the specified speed range and ensure the design life. 3.1.2 No-load force
The maximum output pressure allowed by the rated force or 0.5MPa. 3.1.3 Maximum force
The maximum output force allowed by the operation.
3.1.4 Determined transfer
The maximum nominal speed that can verify the design life on the small and specified oil-inlet parts. 3.1.5 Minimum speed
The minimum transfer value allowed by the rated force to ensure the stability of the oil-inlet parts. 3.1.6 Specification: Nominal discharge pressure per revolution 3.1.7 Nominal discharge pressure The nominal discharge pressure of the product. Approved by the State Administration of Industry and Commerce for implementation on January 1, 2000 3.1.8 No-load displacement The discharge pressure measured under no-load conditions. 1.1.9 Suction capacity The minimum inlet pressure without generating air leakage. 3.1.10 Rated pressure under rated speed. 3.2 Symbols and other symbols See Table 4. 4 Test device and test equipment See Figure 4.1 Test system diagram 9714—1999
Meeting the most name
·Rate·
Volumetric efficiency
Total efficiency
Vacuum degree
1 one box: 2 cut-off net, 3 oil table: 4, true cross table: one reduction ban: 6 one-way 7 one force ticket
K city time ball net: one through reading: 10 first-class public count: - two two certificate separation: 12 - belt solution net: 15 or piece sensor: 14. Buckle ground sensor: 15 continental speed motor: 16 - oil: 17 - cooling end: 18 - certificate interrogator 1
4.2 The test oil is No. 6 hydraulic transmission oil, +.3 Test oil temperature: 85±5℃
J0/T 9714—1999
+. Test oil purity: The solid lipid particle test grade code of the test oil filter shall not be higher than 19/64.5. Set
4.5. Pressure measurement point: Set at (2-4)4 meters away from the inlet and outlet of the whole. It is the place where the chain is trapped. During the steady-state test, it is allowed to move the single point to a farther distance from the test object, but the pressure safety of the pipe peak must be considered. 4.5, 7
Temperature bottom test point: Set at (2 meters)d away from the pressure test point, and the single path test pump is separated from the test point. 4.5.3 Test points: The location and number of test points shall comply with the provisions of GBT3767. .4.6 Steady state 1 play
The range of variation of the average displayed value of each parameter is in accordance with Table 2. The steady state working condition is the working condition. Under the steady state working condition, the various indicators of each set point (such as frequency, current, torque, speed, etc.) should be adjusted at the same time. 4.7 Measurement accuracy
The measurement accuracy level is divided into A, B, and C. The allowable system error of the measurement system is specified in Table 3 and Table 2. (1MPa)
Note: Type test does not change the minimum accuracy: Factory station The test shall not be lower than the micro-test accuracy: Table
1: Table 0.2MP
: Table pU2M)%
: The test shall not be modified in B-test: The test shall not be carried out in accordance with the micro-test accuracy. 8 The test model or test shall have the following technical support: Position description, main parts sample and spare parts catalog: .sd
JB/T9714--1999
Main parts and vulnerable parts actual size record before assembly. 4.9 Other test conditions shall be in accordance with the provisions of GT7935. 5 Test categories and items
5.1 Type test
Type test items include:
a) No-load thrust test:
b) Efficiency test;
) Self-priming performance test
d) Noise test:
e) Low speed test:
n) Comparison test;
hy) High speed test:
i) Low temperature test:
Impact test:
k) Effectiveness inspection:
1) External leakage inspection:
m) Disassembly inspection:
5. 2 Factory test
Factory test items include:
a) Running-in test;
b) Load test;
e) Emission test:
E) External isolation inspection.
6 Test method
6.1 Bullet test method
6.1.1 No-load emission test
Perform according to GH7936.
6. 1. 2 Efficiency test
6.1.2.1 Test method
Positive force: including no-load pressure, rated force, and at least 6 equal force points. Transmission: including rated transmission, and at least 10 equal points of the minimum speed. Temperature: 50s.Bst5
Measure the flow, pressure, speed, input torque and other parameters of the above components under the following conditions, and output the output, input, accumulation and total efficiency. +
6.1.2.2 Calculation formula
a) Volumetric efficiency shall be calculated according to formula (1): t = K.
Test load capacity, mr:
K = displacement at no load H, mL
b) Total efficiency shall be calculated according to formula (2):
Where: P
Input power, kW:
P2 = output power, kW.
6.1.2.3 Draw the performance curve as shown in 2, Figure 3. 6.1.3 Self-priming performance test
JB/Jin9714-1999
Under rated speed and load conditions, gradually increase the inlet resistance of the filter pressure, measure the vacuum degree when the total volume of the disk decreases by 1%, and draw the discharge drop rate-oil suction point vacuum curve (see Figure 4). q
6.1.4 Noise test
JBT9714-1999
At a speed of 1m, measure the mother no-load pressure to the bottle Within the range of constant pressure, at least 6 equally divided force points. 6.1.5 Minimum speed test
Continuously operate for more than 10 minutes at the maximum speed and the new constant pressure. During the test, the inlet suction is 8s%±5%. 6.1.6 Overspeed test
Under the rated speed and no-load! Card!, increase the speed to the maximum speed or 115% of the rated speed [select the maximum value] and continue to operate for more than 10 minutes
6. 1.7 Overload test
Under the condition of constant speed and inlet oil temperature, continue to run at 125% of the rated pressure or the rated pressure (select the larger one):
6.1.8 Commercial test
Inlet oil temperature is 120℃, continue to run at constant speed and rated force for more than 1h. 6.1.9 Low temperature test
Under the condition of constant speed and no air flow! The temperature of the tested pump and the oil temperature are both below -20℃. Short-term start-up test case 5 is as follows: 16.1. 10 Impact test
JB/T97E4—1999
Inject imported oil and perform impact at a constant speed. The impact waveform is shown in Figure 5. The impact frequency is greater than or equal to 20 minutes. Record the impact waveform:
· is the fixed period, and is the test period.
6.1.11 Efficiency Qualification
After completing the above-mentioned test items, measure the volumetric efficiency and total efficiency under the assumed working conditions. 6.1.2 Port inspection
In the whole process of the above-mentioned test , check the external connection of each part. 6.1.13 Body inspection
After the test, disassemble and inspect each part.
Each key component must not be fatigued, damaged, or damaged. The body must not exceed two center lines
62! Test method bZxz.net
6.2.1 Running-in test
At a fixed speed or test speed, gradually increase the pressure from no-load, and perform graded running-in: the running-in time and pressure are graded according to the needs Screening, where the running time of rated pressure F is not less than 2m refers to 6.2.2 Overload test
Run for more than 1mn at a constant speed and 12% of the rated pressure: 6.2.3 Busbar test
Measure the busbar under a constant speed (or test speed and no-load pressure conditions). 6.7.4 Capacity efficiency test
Measure the capacity efficiency under a certain condition.
6.2.5 Leakage inspection
Inspect the leakage of each part during the whole process of the delivery test.
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