Some standard content:
ICS65.060.35
Machinery Industry Standard of the People's Republic of China
JB/T7876.3-1999
Hand Pump
Test Methods
Testmethodsforhandpump
Published on August 6, 1999
National Bureau of Machinery Industry
Implemented on January 1, 2000
JB/T7876.3-1999
This standard is a revision of JB/T7876.395 "Hand Pumps - Technical Contents Have Not Changed.
Test Methods".
Editorial modifications were made to the original standard during the revision. This standard replaces JB/T7876.3-95 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Agricultural Machinery Standardization. The responsible drafting unit of this standard is: China Academy of Agricultural Mechanization Sciences. The main drafter of this standard is Wu Tonglin.
1 Scope
Machinery Industry Standard of the People's Republic of China
Test method
Hand pump
Test methods for hand pump
JB/T7876.3-1999
Replaces JB/T7876.395
This standard specifies the conditions, devices, accuracy and methods of performance test, leakage test and reliability test of hand pump, as well as parameter measurement and calculation methods, test report format, etc.
This standard applies to piston pumps, diaphragm pumps and screw pumps (collectively referred to as manual pumps, hereinafter referred to as pumps) that pump clean water at normal temperature and are driven by human power. Other types of manual pumps may also be implemented as a reference. 2
Cited standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of this standard, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. GB/T3216--1989
JB/T 7876.1-1999
JB/T.7876.2—1999
3 Definitions
This standard adopts the following definitions.
3.1 Reference plane
Test methods for centrifugal pumps, mixed flow pumps, axial flow pumps and vortex pumps
Types and basic parameters of manual pumps
Manual pumps
Technical conditions
a) Piston pump: refers to the horizontal plane passing through the middle position of the piston working stroke (Figure 1, Figure 2) or the horizontal plane passing through the center line of the piston (Figure 3);
b) Diaphragm pump: refers to the horizontal plane passing through the middle position of the diaphragm working stroke (Figure 4) or the horizontal plane passing through the center line of the diaphragm (Figure 5); c) Screw pump: refers to the horizontal plane passing through the middle position of the screw length (Figure 6). 3.2 Stroke
The distance between the piston (or diaphragm) moving from the upper working plane to the lower working plane. 3.3 Handle displacement
The length of the stroke from the upper working point to the lower working point of the handle grip. 3.4 Operating force
The force applied by the operator to the handle grip.
3.5 Dynamometer
A graph showing the change of operating force with handle displacement (Figure 7, Figure 8, Figure 9), which reflects the relationship between the force acting on the piston (or diaphragm, screw) and the displacement of the piston (or diaphragm, screw). 3.6 Leakage
Approved by the State Machinery Industry Bureau on August 6, 1999 and implemented on January 1, 2000
The phenomenon of water leakage from the pump bottom valve.
3.7 Non-pressure shallow parallel pump
Refers to a shallow well pump that only lifts well water to the ground. 3.8 Pressure-type shallow well pump
JB/T7876.3—1999
refers to a shallow well pump that can pressurize the water to a higher place after lifting the well water to the ground. Benchmark
Single-acting piston pump
Double-acting piston pump
Figure 2 Single-acting piston pump
Figure 4 Single-acting diaphragm pump
Benchmark surface
Figure 5 Single-acting double diaphragm pump
Figure 6 Single screw pump
JB/T 7876.3-1999
Figure 7 Piston pump dynamometer
Diaphragm pump dynamometer
Deep well screw pump dynamometer
The symbols used in this standard are listed in Table 1.
Most Name
Number of Pump Cylinders or Diaphragms
Screw Diameter
Diaphragm Diameter
Piston Diameter
Diaphragm Force Plate Diameter
Piston Rod Diameter
Screw Eccentricity
Average Operating Force
Instantaneous Value of Operating Force
Gravity Acceleration
Discharge Head
Suitable Suction Head
Number of Sampling Forces||tt| |Screw transmission ratio
Total handle displacement
Liquid mass
Handle reciprocating times
Handle revolutions
Specified handle reciprocating times
Specified handle revolutions
Screw revolutions
Operating power
Head pressure
Specified operating power
Output power
Volume flow
Specified flow
Theoretical displacement
Measured displacement
Mass flow
Bottom width leakage rate
JB/T7876.3—1999
Table 1 Symbol table
Times/min
Times/min
mL/min
X, sum of handle displacements
Flow value at specified speed
Test conditions
Quantity name
Force radius| |tt||Measurement time
Screw pitch
Leakage measurement time
Liquid volume
Operation work
Regulations are based on the work done
Output work
Sum of reciprocating times
Height of pressure measuring instrument
Angle of handle movement
Liquid density
Volumetric efficiency
JB/T7876.3-1999
Table! (End)
The test liquid is clean water at room temperature, and its characteristics refer to GB/T3216 regulations.
The distance from the handle fulcrum to the center of the grip
The sum of the number of reciprocating times of the handle within 1 second and the sum of the number of screw revolutions. Shallow well pump with pressure: refers to the vertical distance from the center of the instrument to the reference surface: Deep well pump: refers to the vertical distance from the center of the instrument to the surface of the water inhaled. The pump to be tested should be in good technical condition, and the installation height of the pump must comply with the design installation height of the pump. When conducting performance tests, the pump should be operated by a dedicated person. The height of the operator is about 1.70m and the weight is about 65kg: When conducting reliability tests on the pump, it can be driven by an electric motor.
When operating the pump, the operator must operate at a uniform speed and with steady force, and the position of the handle must not be moved. 5.4
The instruments and meters used in the test should be calibrated and qualified in accordance with relevant regulations. 5.5
The test pipeline should be installed firmly, and there should be no leakage at each connection. 5.6
The pump should be tested before the formal test. Check the assembly quality of the pump, remove the air in the test pipeline, check whether the instruments and equipment are in good condition, and make the test system in normal working condition. Test device
The test device must ensure a stable water level when testing the pump. 6.1
6.2 When testing a pressure-type shallow well pump, the test device is shown in Figure 10. When testing a non-pressure shallow well pump and a deep well pump, install the test pump in the test device shown in Figure 10, fully open the 6.3
gate valve 5 in the connecting pipe, close the switch of the pressure gauge 6, and connect the outlet of the test pump to the connecting pipe 3. 5
7 Measurement accuracy
JB/T7876.3—1999
1—Confirmation; 2—Container; 3—Connecting pipe; 4—Switching device; 5—Gate valve; 6—Pressure gauge; 7—Tested shallow well pump: 8 Angular displacement sensor: 9—Force sensor; 10 Torque sensor; 11—Tested deep well pump; 12—Lift simulation valve; 13—Water tank; 14—Water supply and drainage pipeline Figure 10 Schematic diagram of test device
7.1 The allowable system error of the measuring instrument shall comply with the provisions of Table 2. 7.2 For the specified points of the measured quantity, at least three groups of readings shall be taken, and the value of each independent reading and the efficiency value obtained from each group of readings shall be recorded. The percentage error between the maximum and minimum values of each quantity shall comply with the provisions of Table 3. 7.3 If the test complies with the allowable system error of the instrument specified in Table 2 and follows the test method of this standard, the maximum total error limit can be considered to comply with the provisions of Table 4.
Table 2, allowable system error of measuring instrument
Measured quantity
Operating work (or power)
Number of reciprocating strokes (or speed)
Error range
Number of repeated readings
Note: The deviation between the maximum and minimum values is:Measured quantity
Operating work (or power)
Number of reciprocating strokes (or speed)
Test method
8.1 Performance test
JB/T 7876.3—1999
Table 3 Variation range of repeated measurements of the same quantity
Deviation between the maximum and minimum values of repeated readings of each quantityFlow, head, operating work, operating power±1.8
Maximum value-minimum valuewww.bzxz.net
Maximum value
Table 4 Maximum total error
Reciprocating times (or revolutions)
Error range
8.1.1 The performance test shall be carried out in accordance with the parameters specified in Tables 1, 2 and 3 of JB/T7876.1-1999, measuring the reciprocating times (or speed), head, flow, operating force and handle displacement of the pump, and calculating the efficiency of the pump. The pump indicator diagram may also be drawn. 8.1.2 The discharge head of the pressure-type shallow well pump and deep well pump shall be measured at 50%, 75%, 100% and 125% of the specified discharge head value, and the pump reciprocating times (or revolutions), flow rate, operating force and handle displacement shall be measured at the same time. 8.1.3
The pump flow rate shall be measured when the pump is filled with water and starts to leak. The flow rate shall be measured for no less than 10 reciprocating times (or revolutions). During the test, the handle shall move within the specified working stroke. The reciprocating times (or revolutions) of the handle shall be controlled by a metronome or other signal device. The measurement timing, handle counting and flow switching shall be performed synchronously. Force measurement generally uses a force sensor. The signal output from the force sensor is processed by a secondary instrument to measure the force acting on the handle.
8.1.9 Displacement measurement can use an angular displacement sensor or a displacement sensor. The signal output from the sensor is processed by a secondary instrument to measure the displacement of the handle.
Before measurement, the force sensor and displacement sensor shall be calibrated on the test device. The performance test results are recorded in Table 5.
8.2 Leakage test
JB/T7876.3-1999
The leakage test mainly measures the leakage of the pump bottom valve. The leakage test of the shallow well pump is carried out at normal pressure; the leakage test of the deep well pump is carried out at 1.5 times the rated working pressure.
8.2.1 When conducting a shallow well pump leakage test, fill the pump cylinder with water. After stabilization, move the measuring cup under the bottom valve, collect the leaked water for 10 minutes, remove the measuring cup, and record the measurement results in Table 6. 8.2.2 When conducting a deep well pump leakage test, remove the piston or screw, fill the pump cylinder with water, then close the pump cylinder, pressurize the pump cylinder, and measure according to 8.2.1.
8.2.3 The leakage rate of the bottom valve is calculated according to formula (1): 9x
8.3 Reliability test
The reliability test is mainly to assess the reliability of the pump, the stability of performance and the wear resistance of the main components. The reliability test time of the pump shall not be less than the index value specified in JB/T7876.2. 8.3.1
8.3.2 When conducting the reliability test of the pump, its rated operating point shall comply with the provisions of Table 1, Table 2 and Table 3 in JB/T7876.1--1999. After the test time reaches the specified value, the flow rate and head of the pump shall be re-measured, and the volumetric efficiency of the pump shall be calculated. 8.3.3
During the test, if it is found that the flow rate of the pump is reduced to less than 70% of the original index (performance test result), it is allowed to adjust according to the provisions of the random technical documents, and then continue the test, but the adjustment situation shall be recorded in the test report. 8.3.5 The test results during the entire test period should be summarized and recorded in Table 7 and Table 8.8.3.6
Before and after the reliability test, the important dimensions of the main parts and wearing parts of the pump should be measured. The parts measured before and after the test should be consistent, and the measurement results should be recorded in Table 9. Table 5 Summary of performance test data
Model:
Model:
Test serial number
No.:
No.:
Test date:
Operating work or
Operating power
Table 6 Summary of leakage test data
Test date:
Measurement time min
Record:
Record:
Leakage volume mL
Water temperature:
Leakage rate mL/min
Model:
Total test
Model:
Average working time before first failure
No.:
Model:
Drawing code
Part name
JB/T7876.31999
Table 7 Reliability test data summary table
Test start date
Test end date:
Before test
Table 8 Reliability test parts damage table
Record:
1. Operation time
After test
Cause of damage
Table 9 Measurement data table of main parts before and after reliability test No.:
Part name
Parameter measurement and calculation
9.1 Lift
Measuring part
Record:
Dimensions before test
Dimensions after test
9.1.1 The pump suction head measurement method is to directly measure the vertical distance between the water surface and the reference plane. 9.1.2 The discharge head can be measured by the following methods: a) directly measure the vertical distance from the reference surface to the center of the upper water outlet; b) measure the pressure with a spring pressure gauge or other pressure gauge; c) measure the pressure with a pressure sensor. The position and requirements of the pressure measuring hole in the test pipeline shall be configured in accordance with the provisions of GB/T3216. 9.1.4 The discharge head of the pump is calculated according to formula (2):
Abrasion amount2 When conducting a deep well pump leakage test, remove the piston or screw, fill the pump cylinder with water, then close the pump cylinder, pressurize the pump cylinder, and measure according to 8.2.1.
8.2.3 The leakage rate of the bottom valve is calculated according to formula (1): 9x
8.3 Reliability test
The reliability test is mainly to assess the reliability of the pump, the stability of its performance and the wear resistance of its main components. The reliability test time of the pump shall not be less than the index value specified in JB/T7876.2. 8.3.1
8.3.2 When conducting a pump reliability test, its rated operating point shall comply with the provisions of Table 1, Table 2 and Table 3 in JB/T7876.1--1999. After the test time reaches the specified time, the flow rate and head of the pump shall be re-measured, and the volumetric efficiency of the pump shall be calculated. 8.3.3
During the test, if it is found that the flow rate of the pump is reduced to less than 70% of the original index (performance test result), it is allowed to adjust according to the provisions of the random technical documents, and then continue the test, but the adjustment situation should be recorded in the test report. 8.3.5 During the entire test period, the test results of each test should be summarized and processed separately, and recorded in Table 7 and Table 8. 8.3.6
Before and after the reliability test, the important dimensions of the main parts and wearing parts of the pump should be measured. The parts measured before and after the test should be consistent, and the measurement results should be recorded in Table 9. Table 5 Summary of performance test data
Model:
Model:
Test serial number
No.:
No.:
Test date:
Operating work or
Operating power
Table 6 Summary of leakage test data
Test date:
Measurement time min
Record:
Record:
Leakage volume mL
Water temperature:
Leakage rate mL/min
Model:
Total test
Model:
Average working time before first failure
No.:
Model:
Drawing code
Part name
JB/T7876.31999
Table 7 Reliability test data summary table
Test start date
Test end date:
Before test
Table 8 Reliability test parts damage table
Record:
1. Operation time
After test
Cause of damage
Table 9 Measurement data table of main parts before and after reliability test No.:
Part name
Parameter measurement and calculation
9.1 Lift
Measuring part
Record:
Dimensions before test
Dimensions after test
9.1.1 The pump suction head measurement method is to directly measure the vertical distance between the water surface and the reference plane. 9.1.2 The discharge head can be measured by the following methods: a) directly measure the vertical distance from the reference surface to the center of the upper water outlet; b) measure the pressure with a spring pressure gauge or other pressure gauge; c) measure the pressure with a pressure sensor. The position and requirements of the pressure measuring hole in the test pipeline shall be configured in accordance with the provisions of GB/T3216. 9.1.4 The discharge head of the pump is calculated according to formula (2):
Abrasion amount2 When conducting a deep well pump leakage test, remove the piston or screw, fill the pump cylinder with water, then close the pump cylinder, pressurize the pump cylinder, and measure according to 8.2.1.
8.2.3 The leakage rate of the bottom valve is calculated according to formula (1): 9x
8.3 Reliability test
The reliability test is mainly to assess the reliability of the pump, the stability of its performance and the wear resistance of its main components. The reliability test time of the pump shall not be less than the index value specified in JB/T7876.2. 8.3.1
8.3.2 When conducting a pump reliability test, its rated operating point shall comply with the provisions of Table 1, Table 2 and Table 3 in JB/T7876.1--1999. After the test time reaches the specified time, the flow rate and head of the pump shall be re-measured, and the volumetric efficiency of the pump shall be calculated. 8.3.3
During the test, if it is found that the flow rate of the pump is reduced to less than 70% of the original index (performance test result), it is allowed to adjust according to the provisions of the random technical documents, and then continue the test, but the adjustment situation should be recorded in the test report. 8.3.5 During the entire test period, the test results of each test should be summarized and processed separately, and recorded in Table 7 and Table 8. 8.3.6
Before and after the reliability test, the important dimensions of the main parts and wearing parts of the pump should be measured. The parts measured before and after the test should be consistent, and the measurement results should be recorded in Table 9. Table 5 Summary of performance test data
Model:
Model:
Test serial number
No.:
No.:
Test date:
Operating work or
Operating power
Table 6 Summary of leakage test data
Test date:
Measurement time min
Record:
Record:
Leakage volume mL
Water temperature:
Leakage rate mL/min
Model:
Total test
Model:
Average working time before first failure
No.:
Model:
Drawing code
Part name
JB/T7876.31999
Table 7 Reliability test data summary table
Test start date
Test end date:
Before test
Table 8 Reliability test parts damage table
Record:
1. Operation time
After test
Cause of damage
Table 9 Measurement data table of main parts before and after reliability test No.:
Part name
Parameter measurement and calculation
9.1 Lift
Measuring part
Record:
Dimensions before test
Dimensions after test
9.1.1 The pump suction head measurement method is to directly measure the vertical distance between the water surface and the reference plane. 9.1.2 The discharge head can be measured by the following methods: a) directly measure the vertical distance from the reference surface to the center of the upper water outlet; b) measure the pressure with a spring pressure gauge or other pressure gauge; c) measure the pressure with a pressure sensor. The position and requirements of the pressure measuring hole in the test pipeline shall be configured in accordance with the provisions of GB/T3216. 9.1.4 The discharge head of the pump is calculated according to formula (2):
Abrasion amount
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