This standard specifies the pre-test preparation, performance test and production test methods of seed cotton dryers. This standard applies to the performance test and production test of dryers. JB/T 7317-1994 Seed cotton dryer test method JB/T7317-1994 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T7317-94
Seed cotton dryer
Published on July 18, 1994
Test methods
Implemented on July 1, 1995
Ministry of Machinery Industry of the People's Republic of China
Machinery Industry Standard of the People's Republic of China
Seed cotton dryer·Test methods
1 Subject content and scope of application
JB/T 731794
This standard specifies the pre-test preparation, performance test and production test methods of seed cotton dryer (hereinafter referred to as dryer). This standard applies to the performance test and production test of dryer. Reference standards
GB1103 Cotton (fine-staple cotton) www.bzxz.net
GB5667 Test methods for agricultural machinery production
Test conditions and preparation
3.1 The test site should be a representative cotton processing plant with conditions for measuring each test item. 3.2 The test sample should be installed and adjusted according to the requirements of the instruction manual. The test can only be carried out after it is confirmed to be in normal condition. 3.3 The main technical parameters of the test sample should be measured before the test. The measurement items are as specified in Table 1, and the results are recorded in Table 1. 3.4 Determination of total effective drying volume: The total effective drying volume is the sum of the dryer volume and the volume of the seed cotton conveying pipeline of the drying system. Calculate according to formula (1) and the results are recorded in Table 1:
Where: Vz total effective drying volume, m\; V—dryer volume, m\;
V. Drying system seed cotton conveying pipeline volume, m\3.5 The raw material for the performance test is grade 3 seed cotton with a moisture content of 9%-12%. 3.6 The test instruments, meters and tools used in the test are shown in Appendix A (reference), and all of them should be calibrated and qualified. 4 Performance test
4.1 Test purpose
The purpose of the performance test is to evaluate whether the performance of the dryer meets the design indicators and to assess whether the quality of the seed cotton after drying meets the quality requirements. 4.2 Test requirements
4.2.1 The number of performance tests shall not be less than 3 times, each time shall not be less than 30 minutes, and the measured data of each item shall not be less than 3, and the average value shall be taken. The results are recorded in Table 2.
4.2.2 During the test, the prototype shall operate continuously without interruption or any adjustment. 4.3 Test content and method
4.3.1 Moisture content determination
The method for determining the moisture content of seed cotton shall be carried out in accordance with the cotton moisture test method of GB1103. The results are recorded in Table 3. 4.3.2 Determination and calculation of the seed cotton processing capacity per unit hour When the seed cotton is fed into the drying system, the feeding amount and feeding time shall be recorded. And calculated according to formula (2), the results are recorded in Table 4. Approved by the Ministry of Machinery Industry on July 18, 1994
Implemented on July 1, 1995
Wherein, G.- cotton seed processing capacity per unit hour, kg/h; G2
- cotton seed weight fed, kg;
- cotton feeding time, h.
4.3.3 Drying intensity determination and calculation
JB/T 7317--94
The amount of water evaporated per effective drying volume per hour is the drying intensity, calculated according to formula (3), and the results are recorded in Table 4: G.
Wherein, G, drying intensity, kg water/(mh); H. Moisture content of cotton seed before drying, %:
H. Moisture content of cotton seed after drying, %.
4.3.4 Energy consumption measurement and calculation
Energy consumption measurement should be carried out for no less than 3 shifts and can be combined with production tests. The results are recorded in Table 4. 4.3.4.1 Heat consumption is the heat required to vaporize each dry gram of water, calculated according to formula (4): 1-HG.g
Where: Q heat consumption, kJ/kg water
G.--Energy consumption, kg (kW·h):
-The calorific value of the actual energy used, kJ/kg (kW·h)qe
4.3.4.2 Coal consumption is the energy consumed to process each 100kg of seed cotton converted into the weight of standard coal. Calculated according to formula (5): Ga.
Ga C, × 2s3 × 10 × 100
Where: G.--Coal consumption, kg standard coal/100kg seed cotton. (3)
(5)
4.3.4.3 The kilowatt-hour seed cotton processing capacity is the weight of seed cotton processed by the unit electrical energy consumed in conveying the drying medium and mechanical transmission, calculated according to formula (6).
Wherein: Ga-kilowatt-hour seed cotton processing capacity, kg/(kW·h); Na——power consumption. kW·h.
4.3.5 Noise measurement
(6)
The test sample should be placed 2m away from the wall. The sound level meter should be placed 1m away from the sample and 1.5m from the ground at several different positions (not less than 5 points) to measure the noise. The average value is taken and the result is recorded in Table 5. 4.3.6 Cotton fiber quality inspection
The cotton fiber quality inspection is carried out by professional cotton inspectors according to the items and methods specified in GB1103. The results are recorded in Table 3. 5 Production test
5.1 Test purpose
Under production conditions, the performance stability, reliability, economy, adaptability, adjustment and maintenance convenience and safety of the dryer are evaluated.
5.2 Test requirements
The test prototype shall be in accordance with
and equipped with full-time personnel to conduct the test
JB/T7317-94
5.2.3 During the production test, performance measurements shall be carried out at least 3 times, once each in the early, middle and late stages, and the measurement method shall be in accordance with Chapter 4 of this standard.
5.3 Test content
5.3.1 Production assessment
5.3.1.1 Full-time personnel shall fill in the production diary, record, working time, adjustment and maintenance time, failure time, seed cotton processing volume, energy consumption, etc. in each shift, and the results shall be recorded in Table 6.
5.3.1.2 When parts are damaged during the test, the fault conditions and causes, the working time of the first fault and the cumulative working time should be recorded, and the results should be recorded in Table 7.
Before and after the test, the dimensions and weight of the main wearing parts should be measured respectively, and the deformation and wear should be calculated. The results should be recorded in Table 8. 5.3.1.3
5.3.2 Time classification
According to GB5667, the production test time is classified into operating time,
Shift time
Non-operating time
Factory pure working time
L Process service time
Adjustment and maintenance time
L Failure time
5.3.3 Main technical Calculation of economic indicators
The results of calculation of main technical and economic indicators are recorded in Table 9. 5.3.3.1 The seed cotton processing capacity per shift is calculated according to formula (7): G
Where: Gt-
The seed cotton processing capacity per shift, kg/h; shift seed cotton processing capacity, kg;
tShift time, h.
5.3.3.2 The drying intensity of a shift is calculated according to formula (8): SG
H.-H, Ga
Where: G.
The drying intensity of a shift, kg water/(m*.h). 5.3.3.3 The standard coal consumption of 100kg seed cotton per shift is calculated according to formula (9): 2Gabg.
G= G, x2 × 10 × 100
Where: Gmb shift standard coal consumption for 100kg seed cotton, kg standard coal/100kg seed cotton; Gab
shift energy consumption, kg(kW·h). 5.3.3.4 shift dry watt-hour seed cotton processing capacity is calculated according to formula (10): ZG
Where: Ga-
shift kilowatt-hour seed cotton processing capacity, kg/(kW·h): Na shift time power consumption, kW·h.
5.3.3.5 Reliability is calculated according to formula (11):
Where; K-
Reliability.%;
（7）
JB/T7317—94
5.3.3.6 Time utilization rate is calculated according to formula (12): After the test, the test data should be sorted and analyzed, and a test report should be submitted. t——failure time, h.
Where: K——time utilization rate, %.
Prototype introduction, working principle and structure, main technical parameters; test purpose, time, location and test conditions; Table 1 Technical parameter measurement table
The report should be accompanied by necessary data charts, special reports, etc.; Test report
Test report content:
Test result analysis;
Test responsible unit and participants.
Test conclusion;
Prototype model:
Manufacturing unit:
Structural type
Overall dimensions (length×width×height)
Total effective drying volume
Total drying time
(12)
Prototype number:
Measurement date:
Design value
Prototype number:
Table 2 Performance test measurement record
Test location:
(Nameplate value)m2/h
(Nameplate value)Pa
Measurer:
Prototype model:
Manufacturing unit:
Operating conditions
Operating time
Heat source performance
Recorder:
Energy consumption
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