Some standard content:
ICS 75.180.01
Registration No.: 6843—2000
Petroleum and Natural Gas Industry Standard of the People's Republic of China SY/T 5046.12000
Seismic Geophone
Part 1: Moving Coil Geophone
Geophone
Part 1: Moving Coil Geophone2000-03-10 Issued
State Administration of Petroleum and Chemical Industry
2000-10-01 Implementation
SY/T5046.1—2000
This standard is a revision of SY/T5046.1—1996 "Seismic Geophone Part 1: Moving Coil Geophone". The main contents of the revision are:
The restriction that the main technical indicators are tested at 20°C (standard temperature) is deleted: because it is difficult to achieve the actual 20°C retention, the test environment for these indicators is uniformly specified as 20°C ± 2.5°C:, because the parameters of the geophone will change with the ambient temperature, through the test, this standard proposes the minimum requirements for the temperature coefficient of the geophone parameters.
This standard proposes the classification index requirements of the geophone according to the performance of the sensitivity, distortion, and transverse natural frequency of the geophone data. This standard adds the items of environmental condition test: This standard proposes uniform accuracy requirements for the equipment testing the geophone. There are two different test methods for the natural frequency and sensitivity parameters. When the test results obtained by the two test methods are quite different, causing disputes and requiring arbitration, the revised standard is more clearly defined and easier to operate, that is, the sensitivity of the natural frequency (single or string) and single detector is inferred from the single parameter test result, and the sensitivity of the detector string is inferred from the comprehensive parameter test result. From the date of implementation, this standard replaces SY/T5046.1-1996. This standard is proposed by China National Petroleum Corporation. This standard is under the jurisdiction of the Petroleum Instrument and Meter Professional Standardization Committee. The drafting unit of this standard: Petroleum Instrument and Meter Quality Supervision and Inspection Center of China Shizhou Natural Gas Group Corporation. The participating drafting units of this standard: Xi'an Provincial Oil Exploration Instrument General Factory, Geophysical Exploration Bureau Instrument General Factory. Drafters of this standard Shi Jincheng Wang Dongxu Gao Zhenwu Ri Diancang This standard was first issued in July 1991, revised for the first time in 1996, and this is the second revision Scope
Petroleum, Natural Gas Industry Standard of the People's Republic of China Seismic Geophone
Part 1: Moving Coil Geophone
Geuphone
Part 1: Moving Coil GeophoneSY/T 5046.1--2000
Replaces SY/T 5046.1—1996
This standard specifies the production series, requirements, test methods, inspection rules, and labeling, packaging, transportation, and storage of longitudinal and transverse moving coil seismic detectors for seismic exploration. This standard applies to the manufacture, inspection, and quality evaluation of moving coil seismic detectors (hereinafter referred to as detectors). 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard: The versions shown are valid when this standard is published. All standards will be revised, and the parties using this standard should consider the possibility of using the latest versions of the following standards. GB191—1990 Packaging, storage and transportation pictorial symbols
CB/T2423.8—1995 Environmental testing for electrical and electronic products Part - Test methods Test Ed: Drop test G3/T2829-1987 Periodic inspection sampling procedure and sample table [Pre-production process stability inspection 3 Definitions
Dial fixed fruguency When the detector is excited in the direction perpendicular to the axis of the substrate and produces the first resonance peak (its output amplitude is greater than or equal to 3% of the nominal value of the detector sensitivity), the corresponding frequency is called the lateral natural frequency. The key natural frequency is called spurious frequency (spurious frcqucncy) 4 Product series
The detector is composed of product series according to its main technical indicators, and its parameters should comply with the provisions of Table 1. Table 1 Main parameters of detector Series
Natural frequency F.Hz
Standard wire resistance R,2
Sensitivity G,V/ (erm)
damping coefficient gate.
distortion coefficient [?
transverse state frequency F, H
insulation resistance Ki.Mn
1 main parameter series value
,4.5, 8, 10, 14. 28. 40, 60. 100,24-4000
:0.120.20.0.21-0.32,0.330.50.0.511.00.1.101.5m)0.2~0.5. 0.5~0.7, U.7-1.0
0.1%, 0.2%,0.3%
150、180.240),25U.3H.500...
Natural frequency F, main parameter series Xian as main series: also select development series according to priority parameter series, 2. The ".." before and after the value of the main parameter series indicates the series to be developed 3. Insulation resistance R, for liquid detector application connection: parallel line requirements National Petroleum and Chemical Industry Bureau 20 Non-3-10 approved 2000-10-01 implementation
5 requirements
5 .1 Technical indicators
The main technical indicators of the detector are shown in Table 2.
SY/T5046.1-2000
When the detector works under different temperature conditions, the values of each parameter will change relative to the requirements of Table 2. The temperature coefficient requirements of its parameters are shown in Table 3.
Table 2 Main technical indicators Tolerance and value limit range (reference temperature 20℃±2.5℃) Serial number
Natural frequency F, Hz
Coil resistance RQ
Sensitivity G , V (cm)
Damping coefficient B
Distortion coefficient D
Typical transverse natural frequency F
Insulation resistance RMO
F.=8~14Hz
Fn≥28Hz
Tolerance and value limit range
Table 3 Detector temperature coefficient (reference temperature 20C±2.5℃) Reference
Temperature coefficient, %
5.2 Reliability requirements
Coil resistance R
Better than + 0.8
Damping coefficient B,
better than -0.3
Sensitivity G
better than -0.2
The reliability of the detector in actual use is expressed by the number of repeated free fall tests (the drop height is 1m). Its technical indicators are shown in Table 4
Table 4 Number of repeated free falls
Natural frequency
<8 or>28
5.3 Environmental requirements
The environmental requirements of the detector should meet the requirements of Table 5. -2
Number of drops
6 Test methods
6.1 Test environment requirements
20% 12.57:
Test items
Environmental conditions for use
Environmental conditions for transportation and storage
SY/T 5046.1—2000
Table 5 Environmental requirements
Test conditions
Temperature: -40-+70
Temperature: --40-+70T
Relative humidity: <90%
-Relative humidity is less than 85% (test equipment requirements); no electromagnetic and vibration interference.
6.2 Uncertainty of main test equipment and test system 6.2.1 The uncertainty of the test equipment system
should be better than 1/3~10 of the tolerance of the measured parameter, and the measurement range can cover the measured parameter. 6.2.2 Single parameter test equipment
-Signal source;
Frequency meter;
Distortion analyzer;
Phase meter:
Dynamic signal analyzer;
Multi-function multimeter;
Vibration table and power amplifier;
Standard vibration detector:
—Mgohmmeter;
False frequency test system
6.2.3 Comprehensive parameter test equipment
Detector tester;
-Mgohmmeter;
Verification standard detector;
False frequency test system,
6.3 Natural frequency F (single parameter test)
6.3.1 Test principle and block diagram
Working state
Non.L operating state
When the frequency of the sinusoidal signal driving the detector is equal to the natural frequency of the detector under test (referring to the primary resonant frequency): the phase difference between the detector output signal and the driving signal is zero (that is, the phase difference between points A and B is zero). At this time, the measured driving signal frequency is the natural frequency of the detector under test (the test principle block diagram is shown in Figure 1). 6.3.2 Test steps
1. Place the detector under test on the vibration isolation table; drive the current so that the output of the detector is equivalent to 60% to 90% of the nominal sensitivity value of this model of detector; 1. Adjust the sweep signal generator so that the phase meter displays zero; read the frequency meter display value, which is the natural frequency Fu of the detector under test. 6.3.3 Test results
The test results should meet the requirements of 5.1.
Frequency meter
SY/T5046.1-2000
Sweep signal generator
Phase meter
Natural frequency test principle block diagram
6.4 Coil resistance R. (Single parameter test) Use an ohmmeter to test the coil resistance of the detector, and the result should meet the requirements of 5.1. 6.5 Sensitivity G (Single parameter test)
6.5.1 Test principle and block diagram
Detector
Vibration isolation table
When the vibration table drives the detector with a vibration speed of 1cm/s (peak value) and a vibration frequency of 5 to 10 times the natural frequency of the detector under test, the measured output voltage peak value of the detector is the sensitivity of the detector (the test principle block diagram is shown in Figure 2). Digital voltmeter
Digital voltmeter
Vibration table
6.5.2 Test steps
Power amplifier
A detector under test; J Standard detector
Sine wave signal generator
Note: The vibration table is a vibration table with measures to prevent external vibration interference. Figure 2 Principle block diagram of sensitivity test
Rigidly fix the standard detector and the detector under test on the vibration table; adjust the signal generator so that its output signal frequency is any frequency value within 510 times the natural frequency F of the detector;
Adjust the power amplifier so that the output voltage of the standard detector is the voltage value obtained by multiplying the sensitivity of the standard detector by 1cm/s;
Measure the output voltage peak value of the detector under test as its sensitivity. 6.5.3 Test results
The test results should meet the requirements of 5.1.
6.6 Damping coefficient B. (Single parameter test)
6.6.1 Test principle and block diagram
Use a step signal to drive the detector and measure the values of two adjacent amplitudes A1 and A2 of the detector output response (as shown in Figure 3). The damping coefficient B is calculated according to formula (1) (the test principle block diagram is shown in Figure 4). In
6.6.2 Test steps
Pulse signal
Generator
SY/T5046.1—2000
A-the first peak amplitude, V; A2-the second peak amplitude, VT-the first half cycle, SFigure 3 Schematic diagram of detector output response curve
Amplifier
Detector
Vibration isolation table
Yonni coefficient test principle block diagram
Dynamic analyzer
Adjust the output amplitude of the pulse signal generator to make the detector output the maximum undistorted signal while ensuring the normal operation of the detector:
Use the dynamic analyzer to measure the voltage value of A1A2;-Substitute the values of A1 and A2 into formula (1) to obtain the detector damping coefficient Bto6.6.3 Test results
The test results should meet the requirements of 5.1.
6.7 Distortion coefficient D (single parameter test)
6.7.1 Test principle and block diagrambzxz.net
Use a sine wave signal with a certain frequency to drive the detector. The ratio of the total effective value of the harmonic components of the detector output signal to the effective value of the fundamental component (expressed as a percentage) is the harmonic distortion coefficient of the detector (the test principle block diagram is shown in Figure 5). 6.7.2 Test steps
Adjust the output signal of the signal source to the required frequency value (when the natural frequency of the tested detector is less than 14Hz, the test frequency is 12Hz; when the natural frequency of the tested detector is greater than or equal to 14Hz, the test frequency is the nominal value of the natural frequency of the detector); adjust the amplitude of the signal source output signal so that the vibration speed of the detector coil is 1.8cm/s (peak value): the value measured by the distortion tester is the distortion coefficient D of the tested detector. 6.7.3 Test results
The test results should meet the requirements of 5.1.
Xu Haoyuan
6.8 Transverse natural frequency F
6.8.1 Test principle and block diagram
SY/T 5046.1—2000
Pulsator
Isolation platform
Figure 5 Block diagram of distortion coefficient test principle
Distortion test position
The transverse natural frequency can be tested by rotary excitation or horizontal excitation. Normally, horizontal excitation is used (the test principle block diagram is shown in Figure 6);
-Measure three times in total. In the second and third tests, the detector under test is rotated about 90° in the horizontal direction respectively. Signal generator
Exciter
6.8.2 Test steps
Horizontal vibration table
I—Detector under test: H—Transverse velocity type detector Figure 6 Principle block diagram of transverse natural frequency test -Rigidly connect the detector under test and the transverse velocity type detector to the horizontal vibration table": -The frequency used by the horizontal vibration table is 20--600Hz, and the speed is 0.1 ~-0.5cm/s; Digital voltmeter
Mathematical voltmeter
Adjust the frequency of the signal generator. When the output signal of the detector under test has a resonance peak and the peak amplitude is greater than or equal to 3% of its nominal sensitivity value (the value measured by the digital voltmeter), record the frequency value F1 at this time, rotate the detector under test 90° and 180° respectively, repeat the test, and record F2, Fs respectively. Compare Fi, F2: F3. The minimum value is the transverse natural frequency of the detector under test.
6.8.3 Test results
The test results meet the requirements of 5.1.
6.9 Repeated free fall
6.9.1 Test method
Refer to Method 2 of GB/T2423.8 - Repeated free fall, the drop height is 1nl6.9.2 Test steps
- Initial test, the tested detector is tested according to the test methods specified in 6.3~6.7, and the technical indicators specified in 5.1 are tested. After passing the drop test, the drop test can be carried out;
The tested detector is subjected to repeated free fall test in the drum, and the number of drops is selected according to the provisions of 5.2;- Repeat initial test items ：
6.9.3 Test results
The test results should meet the requirements of 5.1,
6.10 Damping coefficient, natural frequency, sensitivity (comprehensive parameter test) 6
6.10.1 Test principle
SY/T5046.1—2000
Start the detector tester, output a DC step excitation signal to the detector under test, and then test the response signal of the detector under test (the principle is shown in 6.6.1); calculate its damping coefficient, natural frequency and sensitivity according to the following formula. 6.10.2 Damping coefficient B. Calculation formula
Damping coefficient B, calculation formula is shown in formula (1). 6.10.3 Natural frequency F, calculation formula
2TV1-B
Where: T—the first half cycle of the response signal of the detector under test, S.
6.10.4 Sensitivity G calculation formula
arctan
Where: m——mass of detector coil, kg2 yuan mA.F
Linear current through detector coil, A. 6.11 Detector string (comprehensive parameter test) The test items after the detector string is connected in parallel are the main technical indicators 1 to 5 listed in 5.1. 6.11.1 Detector string sensitivity G
The sensitivity G after the detector string is connected in parallel is calculated according to formula (4): GGM
Where: G——sensitivity of a single detector in the detector string; M——number of series in the detector string.
6.11.2 Detector string DC resistance R
The DC resistance R after the detector string is connected in parallel. Calculate according to formula (5): R-RM
(3)
Where: R is the DC resistance of a single detector in the detector string (when the detector has no parallel resistance, it is equal to the coil resistance R; when there is a parallel resistance, it is the DC resistance after parallel connection); M is the number of series connections in the detector string
N is the number of parallel connections in the detector string;
is the resistance of the detector combination cable (calculated according to the DC resistance of the cable used and the detector). 6.11.3 Natural frequency, damping coefficient and distortion coefficient of detector string The natural frequency, damping coefficient and distortion coefficient parameter values of the detector string and parallel combination remain unchanged and shall meet the requirements of 5.1. 6.12 Insulation resistance R
6.12.1 Test principle
Use a megohmmeter to test the insulation between the output end of the detector and the tail cone. 6.12.2 Test steps
Immerse the entire detector string in water, short-circuit the terminal clamps of the lead wires and place them outside the water; after soaking in water for 4 hours, use a megohmmeter to test the insulation resistance between the output end of the detector string and each tail cone. 6.12.3 Test results
The test results shall meet the requirements of 5.1.
6.13 Temperature coefficient
SY/T 504G.12000
Place the detector under test in a high and low temperature test chamber and keep it at -40, -20, 0, 20, 40℃ and 70℃ for more than 1h respectively. Then test the resistance, damping and sensitivity parameters according to the comprehensive parameter test method. The results shall meet the requirements of 5.1. 6.14 Explanation of the two test methods
The single parameter test method is suitable for product quality supervision and inspection departments and product research and development departments to test and study the performance of a single detector; while the comprehensive parameter test method is suitable for product production and use departments to test the performance of a series of detectors. When the same detector is tested by different methods, the test results of its natural frequency and sensitivity will be different. If the two test results are very different, the test results of the detector natural frequency and the sensitivity of a single detector shall be based on the single parameter test method, and the test results of the detector series sensitivity shall be based on the comprehensive parameter test method. 7 Inspection rules
7.1 Type inspection
7.1.1 Type inspection should be carried out in any of the following circumstances. - New product finalization appraisal:
After the initial production, when the structure, process, and materials have major changes that may affect the performance; when the product is discontinued for more than two years and then resumes production; when the factory inspection results are significantly different from the last type inspection; when the superior quality supervision agency makes a request. 7.1.2 Type inspection items are shown in Table 6.
Table 6 Detector inspection items
Inspection items
Natural frequency
Coil resistance
Sensitivity
Inner coefficient
Distortion coefficient
Transverse natural frequency
Sub-complex free fall
Insulation resistance
Humidity performance
Technical requirements
To: ● indicates mandatory inspection items, () indicates optional items Reduced inspection methods
6.3 or 6.10
6.4 or 6.11
6.5 or 6.10
6.6 or 6.10
6.7 Or 6.11
Type inspection
Inspection type
Factory inspection
7.1.3 Samples for type inspection shall be randomly selected from trial samples or batch products: in accordance with the provisions of GB/T2829, a sampling plan shall be adopted, with discrimination level II, unqualified quality level RQI. equal to 40, qualified judgment number A, equal to 1, and unqualified judgment number R. 2.7.1.4 Sample inspection: Inspect the samples item by item according to the technical indicators specified in 5.1, 5.2, and 5.3, and accumulate the total number of unqualified products in units of products.
7.1.5 Judgment of the inspection results of each test group period: According to the original inspection results, if the number of unqualified products found in the sample is less than or equal to the qualified judgment number A..., then the batch of products is judged to be qualified; if the number of unqualified products found in the sample is greater than or equal to the unqualified judgment number R, then the product is judged to be unqualified. 8
7.2 Factory inspection
7.2.1 Factory inspection items are shown in Table 6
SY/T 5046,12000
7.2.2 Each detector (or each string) shall be tested item by item according to the inspection items specified in 7.2.1. If one or more indicators are unqualified, the detector (or detector) shall be judged as unqualified and unqualified products shall not be shipped out. 7.2.3 Unqualified products are allowed to be returned for repair and then re-tested according to the provisions of 7.2.2: 8 Marking, packaging, transportation, storage
8.1 Marking
The content of product marking includes:
Product model mark:
Manufacturer's name or government mark.
8.2 Packaging
The detector is packed in boxes. The packaging logo should comply with the provisions of (B191. The technical documents carried with it include product manual, certificate of conformity, packing list, etc.
8.3 Transportation
It can be transported by sea, land or air.
The detector should be stored in a room with a temperature of -40-~±70℃, a relative humidity of less than 90℃, no corrosive gas and strong electromagnetic field, and good ventilation. If the floor is damp, it should be placed on a wooden board with a height of 30-50cm. At the same time, it should be prevented from being left unused for a long time in a damp environment.If the above indicators are unqualified, the detector (or application) is judged as a defective product and the defective product shall not be shipped out. 7.2.3 Defective products are allowed to be returned for repair and then re-inspected according to the provisions of 7.2.2: 8 Marking, packaging, transportation and storage
8.1 Marking
The content of product marking includes:
Product model mark:
Manufacturer's name or government mark.
8.2 Packaging
The detector is packed in boxes. The packaging logo should comply with the provisions of (B191. The technical documents carried with it include product manual, certificate of conformity, packing list, etc.
8.3 Transportation
It can be transported by sea, land or air.
The detector should be stored in a room with a temperature of -40-~±70℃, a relative humidity of less than 90℃, no corrosive gas and strong electromagnetic field, and good ventilation. If the floor is damp, it should be placed on a wooden board with a height of 30-50cm. At the same time, it should be prevented from being left unused for a long time in a damp environment.If the above indicators are unqualified, the detector (or application) is judged as a defective product and the defective product shall not be shipped out. 7.2.3 Defective products are allowed to be returned for repair and then re-inspected according to the provisions of 7.2.2: 8 Marking, packaging, transportation and storage
8.1 Marking
The content of product marking includes:
Product model mark:
Manufacturer's name or government mark.
8.2 Packaging
The detector is packed in boxes. The packaging logo should comply with the provisions of (B191. The technical documents carried with it include product manual, certificate of conformity, packing list, etc.
8.3 Transportation
It can be transported by sea, land or air.
The detector should be stored in a room with a temperature of -40-~±70℃, a relative humidity of less than 90℃, no corrosive gas and strong electromagnetic field, and good ventilation. If the floor is damp, it should be placed on a wooden board with a height of 30-50cm. At the same time, it should be prevented from being left unused for a long time in a damp environment.
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