JB/T 9103.2-1999 Reciprocating piston acetylene compressor performance test method
Some standard content:
1CS23.148
Machinery Industry Standard of the People's Republic of China
JB T9103.2-1999
Reciprocating Piston Acrylene Compressor
Performance Test Methods
Methods of performancc test foyreciprocating piston acrtylene comprcssor1999-07-12 Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JB/T9103.2—1999
This standard is a revision of ZBJ72040—90 Reciprocating Piston Acrylic Compressor Performance Test Methods. Only editorial changes were made during the revision, and there were no major technical changes. This standard replaces ZBJ72040—1999 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Compressors. The main drafting unit of this standard is the No. 1 Machinery Factory of Zigong City, Sichuan Province. The main drafters of this standard are Hu Guangyuan, Xu Jiangbao, and others. Scope
China Machinery Industry Standard
Methods of performancetertforreriprocating piston acetylene compressor
Methods of performancetertforreriprocating piston acetylene compressor This standard specifies the performance determination of piston acetylene compressor (hereinafter referred to as acetylene compressor). This standard is applicable to acetylene compressors.
2 Referenced Standards
JB/T9103.2—1999
The provisions contained in the following standards 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, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T1032-1985-2-phase asynchronous motor test method GR/T 3853-1998
GA 6819-1986
3 General
Visual compressor acceptance test
Melt block
3.1 The test system adopts a closed circulation system. 3.2 The performance test of the compressor can be carried out with standard air, commercial air and ethylene gas. 3.3 The ethylene gas performance test must be carried out after the performance test of air and standard air is qualified. 3.4 The performance test can also be carried out with ethylene in the supporting plant (factory) or chemical process equipment: 3.5 During the test, the maximum allowable deviation between the test value and the specified value, the maximum allowable fluctuation range of any group of readings relative to the average value shall be in accordance with the provisions of Table 1. There is no allowable increase between the measured value and the specified value. Relative pressure (or sound difference) Conveyor suction pressure Total torque ratio Compressor air disc speed Spindle speed difference Compressor suction speed and inlet cooling water flow Cooling water flow Power supply voltage Approved by the State Machinery Industry Bureau on July 12, 1999 ± 2.0%
±8℃
The maximum allowable fluctuation range of any set of spans relative to their average value
2000-01-01 implementation
JB/E9103.2-1999
3.6 Due to customer conditions, when the test operating conditions are consistent with the specified operating conditions, the maximum allowable operating value (or deviation) between the operating conditions and the specified value during the test is the hydraulic range of the operating conditions during the test. Under the conditions specified in this standard, the method specified in this standard is used to achieve the test, and then the performance of the compressor under the specified working conditions is converted into box 3,7. The accuracy of the test instrument shall comply with the provisions of this standard and be certified by the national authorized metrology department. Qualified: 3. All test instruments should be non-electric as much as possible: If electric instruments are used, they should be flash proof and explosion-proof or have corresponding explosion-proof measures.
3.9 The layout of the acetylene differential pressure machine test system shall be in accordance with the provisions of Figure 1. For the acetylene compressor of the passenger combined cooler and the test system of the acetylene compressor of the first grade but not the "first grade", the layout of the test system can refer to the tree of the diagram. 3.1 Before the core test, all the connecting pipes in the test system shall be acid-washed and cleaned before installation. During installation, the equipment, pipes and steps of the entire system shall be checked for gas retention according to the design requirements, and there shall be no leakage. 4 Measuring instruments and measurement methods
4.1 Lefang test
4.1.1 The pressure of the measuring plate shall be measured in accordance with the provisions of Figure 1. The measuring points of the same level can be 1-2 according to the arrangement. The pressure of each level is 1.
4.1.2 The suction pressure, balance mode and inhaler pressure of the compressor shall be measured by a pressure plate. The working parts shall use pure water as the valve reading. Micro-water-soluble dyes may be added. The pressure gauge shall have a scale that can make the reading accurate to 1mm. Its minimum inner diameter shall be greater than mm. When the water column of the U-type pressure gauge caused by the intake air exceeds mn, a balance valve shall be installed in front of the air pipe to prevent intake fluctuations.
4.1.3 For high-speed compressors, the intake pressure of each level and the exhaust pressure of each level shall be not less than 1.5 levels of high-speed pressure equipment or equivalent. Gas pressure gauge: oil pressure is measured with oil pressure gauge with accuracy not less than 2.0, and the pressure gauge is selected according to the test pressure of the specification. The indicated pressure value is between 1.3 and 2/3 of the range, and the pressure gauge can be used only after the standard gauge is calibrated and qualified. 4.1.4 Atmospheric pressure is measured with a mercury atmospheric pressure gauge with an error of less than 67P [0.5mHg or a diaphragm micrometer with the same accuracy. At the same time, a thermometer with an error of less than ± [1/2] should be used to indicate the working temperature of the atmospheric pressure gauge. The reading temperature is corrected. 4.1.5 Atmospheric pressure values can also be obtained from the nearby meteorological bureau, but the given values are corrected by height correction. The correction formula is in accordance with the provisions of Appendix A of GB.T3853-1998.
4.1.6 The positions of these measuring points shall be in accordance with Appendix A of GB/T3583-998. 4.1.7 Pressure gauge The pressure gauge should be used or the pressure pipe should be used to reverse the pressure measuring point through the buffer. The minimum volume of the buffer is 5L and the diameter is at least 1 of the high pressure. The minimum inner diameter of the pressure pipe is 6mm. The buffer volume can be increased or the pressure pipe can be lengthened to eliminate the pressure fluctuation during measurement. 4.2 Temperature
4.1.1 The temperature of the gas should be measured by a thermocouple, an electric thermometer or a non-mercury liquid thermometer of equal accuracy: if the water filtration is used for measurement, the provisions of 4.2.3 should be followed. The temperature of the filter body is measured by a filter thermometer. The measuring plate position is determined according to Figure 1. The measuring error of the thermometer is not more than 0.5. 4.2.22 The suction and exhaust temperature of the compressor shall comply with the provisions of Appendix A of G3/T3583-1598. The measuring points for high pressure water can be selected according to the above provisions. The selected positions should avoid the influence of cold or hot air flow or radiation. 4.2.3 When using a mercury thermometer to measure the gas temperature, a thermometer casing shall be used. The casing shall be thin and smooth. The surface shall be smooth. The casing material shall be low carbon steel. The casing shall be filled with oil or other appropriate filter. 2
JB/T9103.7-1999
Some of the above are related to the test equipment. The following are related to the test equipment. JB/T9103.2—1999
4.2.4 The installation method of the thermometer should be selected according to the layout of the test device and according to Figure 2. If the fluid diameter is small, it should be inserted in reverse and the sleeve should be located in the center of the body tube. The thermometer should not be cut out when reading. The horizontal flow rate of the fluid at the point should not be greater than 30 rpm/s. 2 The installation method of the thermometer
4.3 Volumetric flow
4.3.1 The volumetric flow of the compressor should be measured by a rotor flowmeter or other methods with equal accuracy. The flow rate accuracy should not be lower than Class 1.5. 4.3.2 The rotor flowmeter used to measure volume flow cannot be made of copper for its housing, seal and rotor. 4.3.3 The rotor flowmeter should be installed on a vertical vibration-free pipeline, and the installation position should comply with the provisions of Figure 1. 4.3.4 The rotor flowmeter should be calibrated with air under standard conditions (temperature! -20℃, pressure p-0.1013MPa). 4.4 The speed measurement shall be carried out in accordance with the relevant provisions of GB T3583. 4.5 Power measurement
4.5.1 The shaft power of the acetylene compressor shall be determined by one of the following methods: a) indirectly determine the motor output power by loss analysis method, and then multiply it by the transmission efficiency; b) check the motor efficiency curve provided by the manufacturer under phase wear load, and use the motor repair power to obtain the output power and then multiply it by the transmission efficiency,
4.5.2 The input power of AC motor should be measured at the motor input terminal with two wattmeter method or three wattmeter method. The instrument accuracy is specified in Table 2.
Connection level (not less than)
Ammeter
Voltmeter
4.5.3 The output power of motor shall be measured in accordance with the relevant provisions of GB/T1032, wattmeter
4.5.4 The transmission efficiency of the transmission device installed between the prime mover shaft and the compressor shaft shall be selected according to the provisions of Table 3. 4
Five sensors
Transmission method
Mold wheel transmission
Or belt transmission
4.6 Humidity and cold water measurement
JB9103.2-[999
Special review
Each floor
4.6.1 The air humidity is measured by a point meter or a trace moisture diffuser or other instruments of equal precision. 4.6.2 The cold water is measured in accordance with the provisions of Appendix A of GB/T3583-1998. 4. The cooling water flow is measured by a flow meter with a relative error of less than ±2% or other methods of equal precision. 4.8 The low-pressure parking device of the compressor is monitored by a differential pressure transmitter with an accuracy of not less than 1.0%; the high-pressure parking device is monitored by a pressure transmitter with an accuracy of less than 0.5. 4.9 The new sealing structure of the acetylene compressor should be monitored by a combustible gas explosion detector. 4.10 The lubricating oil consumption measurement of the acetylene compressor shall be in accordance with the provisions of Appendix A of GB/T3853-1998. 4.11 The resistance measurement of the suction filter shall be carried out by connecting the inlet and outlet ports of the suction filter with a V-type pressure gauge to measure the air flow. The differential pressure meter shall be in accordance with the provisions of 4.1.2.
4.12 The safety performance test shall be carried out by adjusting the exhaust valve of the compressor under full load operation to check the gas pressure at the start of the action and the reset to determine whether its performance meets the specified requirements. 4.13 Acetate purity measurement
4.33.1 The purity of acetylene shall be measured by the purity measurement absorption tube specified in GB6819. The free liquid is a saturated solution of potassium iodide, or an aqueous solution of the inner side, monomethyl methylamine as the absorption liquid, and a gas chromatography method of a special chromatograph for acetylene, but the results of the determination of the potassium iodide and the ion absorption method shall prevail. The purity of the inlet and outlet gas sampling ports of the compressor shall not be less than 98%. 4.13.2 The test of phosphine and sulfide content in acetylene gas shall be in accordance with the provisions of GB6819. Test performance
5.1 Air performance test
5. 1.1 Test date
1.1 Test the running-in after assembly and check whether each moving part meets the design requirements when the compressor is running. b! Measure the inlet and exhaust pressure, volume flow rate, temperature, water consumption, oil target, volumetric specific energy, etc. of each level of the compressor to facilitate the comparison test of acetylene gas.
5.1.2 Test method
1) Firstly, carry out no-load operation. The no-load operation test specification shall be carried out in accordance with the technical requirements of the product and the relevant technical documents. b) After the no-load operation is qualified, the air performance test shall be carried out and various performance parameters shall be measured. During each working condition test cycle, at least 3 measurements shall be made for a total time of not less than 30 minutes. The measurement time shall be equal to the actual measurement time. During each measurement, various performance parameters shall be taken at the same time. ) Analyze the test data and draw the data curve. 5.2 Nitrogen test
5.2. 1 Test date
2! When using hydrogen for circulation test, the air in the circulation system must be purified to prepare for the acetylene test. 5
JB/T9103.2—1999
b) In the circulation test, the safety and reliability of the high and low pressure automatic protection equipment shall be evaluated, and each safety device shall be checked to see if it jumps according to the start-up instructions.
5.7.2 Test method
) The whole system is filled with nitrogen of a certain pressure, and the whole system is subjected to the circulation test. The cycle time is not less than 1h. During the cycle, the oil-water separator, desiccant, etc. are opened regularly for purge, and then the mixed gas is discharged and filled with separated gas again for compression cycle. If the ratio is reversed, the oxygen purity requirement is met. b) The flanges and valves of all joints of the whole system are checked for gas purity with neutral saline. c) Oxygen purity is measured indirectly by oxygen meter or other methods, that is, the oxygen content in hydrogen is measured, and the oxygen content should be less than 2%). Adjust the high and low pressure limit devices according to the design requirements, and conduct automatic shutdown test. The number of tests should be no less than 3 times. 5.3 Acetate performance test
5.3.1 Use the above-mentioned nitrogen replacement cycle replacement method to replace the nitrogen in the closed-circuit circulation system with acetylene gas until the gas purity requirement of 4.13.1 is met.
5.3. After the acetylene compressor is running steadily, measure the performance parameters of the instrument. Each working condition test period shall be measured at least 5 times, and the total time shall be no less than 3 hours. The measurement time shall be roughly equal. Each parameter shall be read at the same time when measuring. 5.3.3 Arrange the test data and plot the data in the aforementioned air data curve or corresponding table. 6 Calculation of test results
6.! Check all records and use the arithmetic mean of the effective values of each test period for the calculation results. 6.2 Calculate the volume under the specified working conditions.
6.2.1 Calculate the measured volume flow rate
&) The density of the measured gas is calculated according to formula (1): 2-1.207p/T×10
Where: density of the measured gas, kg/m
P—pressure of the measured gas, MPa;
molecular weight of the measured gas, 26.08;
T—temperature of the measured gas, K.
b) Under normal use conditions, the flow through the flowmeter is calculated according to (2): B*Q* Pu × Pn ×T, Npor * Pa ×Ty) Where: α is the flow rate through the flowmeter under normal use conditions, m2 is the flow rate indication value of the flowmeter,
P is the density of air under standard conditions, kgm
P is the density of the measured gas under standard conditions, kg/m: P: - the absolute pressure of air under standard conditions, 0.1013MPa: Po - the absolute pressure of the gas at the flowmeter inlet under normal use conditions, MPaIF: the absolute temperature of the air under standard conditions, (273.15+20)K: the absolute temperature of the gas at the flowmeter inlet under normal use conditions, K. The conditions used in the calculation formula are as follows:
JET9103.2--1999
The conditions used in the calculation method of the gas tightness and the correction formula of the volume flow plate are as follows: the pressure of the gas is less than 0.196MPa, the temperature is at 0.40℃,
6.2.2 The volume flow of the compressor is calculated by the formula! 3) Calculation: P,-Qn0+(Ws +3x PsKp* fa?
Wu:
The volumetric flow rate of condensed water in the compressor, m\min; The mass of condensed water in the unit volume recovered between the compressor air inlet and the rotor flowmeter, and: w—The mass of condensed water adsorbed in a single compressor time, kin; W=Muna
Mfz,. —-The amount of adsorbent required per unit time, kg-min; Adsorbent adsorption capacity (in terms of weight space), %: rs
The water vapor density at the first suction temperature, km: The water vapor pressure required at the first suction temperature (absolute pressure) Pa; P—The first suction pressure (absolute pressure), Pae6.2.3 The volumetric flow rate after speed correction
When the compressor is tested at a speed other than the specified speed, it is corrected according to formula (4): 9=0,[n] in
Formula: 9 specifies the compressor flow rate under the specified conditions, mmin; in1 specifies: the compressor speed under the specified conditions, rm
the compressor speed during the test cooling, /mi,
6.2.4 specifies the volume range of the compressor under the specified conditions. When the test conditions of the compressor are different from the specified conditions, correct it according to formula [5]: []-oee[Tl[? xpe]
Where: [o] is the current compressor volume flow rate m/min [F] - under specified conditions, the first stage intake pressure of the compressor (absolute pressure), MPu [T] - under specified conditions, the intake pressure of the compressor stage, K, 6.3 Calculate the measured shaft power
6.3.1 Calculate the shaft strength according to the specific motor output formula (6): Nz=Naa n.
：N..—Motor output power, kw
. Transmission efficiency between the motor and the compressor shaft 6.3.2 Calculate the power from the motor efficiency curve provided by the manufacturer according to formula (7) NN,Fawww.bzxz.net
Motor type motor power, kw:
Where [
,... The efficiency of the motor under the corresponding working conditions found out from the motor efficiency curve provided by the manufacturer. 6.4 Calculate the specific energy under specified conditions
6.4.1 Calculate the shaft power under specified conditions according to formula (R) [NJ-N,TTT(T)
JB/T9103.2-1999
Where: — the arithmetic mean of the suction temperatures at all levels under the specified conditions, K: [T,] — the arithmetic mean of the temperatures at all levels under the specified conditions, K, (.4.2 Calculate the volumetric specific energy under the specified conditions according to formula (9): [w] = s[N][o]
Where: (] — the volumetric specific energy under the specified conditions, k whm;] — the shaft power of the compressor under the specified conditions calculated according to 6.4.1, kW: <; — the volumetric flow rate under the specified conditions, m/mins7 Verification
When the return type pilot machine has passed the performance test according to this standard, it is allowed to use air and regas medium, adopt a simplified system, remove the low-pressure intake part and high-pressure medium and other components, and adopt an open system> or obtain the performance test method specified in GB/T3853 to determine the volumetric flow rate and volumetric specific energy of the compressor. To verify whether it meets the performance test results of the prototype.
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