SY/T 5046.4-2002 Seismic geophones Part 4: Moving coil accelerometers
Some standard content:
ICS 75.180.10
Registration number: 10418-2002
Petroleum and natural gas industry standard of the People's Republic of China SY7T 5046.42002
Geophone
Part 4: Moving acceleration geophone2002-05-28 issued
National Economic and Trade Commission
2002-08-01 implementation
Normative reference documents
Product series
Technical indicators and classification
4.3 Reliability
4.4 Environment
５ Test methods
Test environment
Uncertainty of main test equipment and test system5.3 Appearance inspection
5.4 Single parameter test method
5.5 Comprehensive parameter test
6 Inspection rules
6.1 Type inspection
6.2 Export inspection
7 Marking, packaging, transportation and storage
7.1 Marking
7.2 Packaging
7.3 Transportation
SY/ 5046.4--2002
SY/T 5046.4--2002
This part is formulated based on the needs of field seismic exploration and production and the current technical level of similar products at home and abroad. This part is the fourth part of the seismic geophone series standard. This part was proposed and submitted by the Petroleum Instrument and Meter Professional Standardization Committee! Drafting unit of this part: Petroleum Instrument and Meter Quality Supervision and Inspection Center of China National Petroleum Corporation Participating drafting unit of this part: PetroChina Geophysical Exploration Equipment Manufacturing Plant. The main drafters of this part: Han Zexi, Shi Jincheng, Wang Dongdi, Tian Diancang, Yu Shuxian, I
1 Scope
Seismic geophone
Part 4: Moving coil accelerometer
SY/T 5046.4—2002
This part specifies the product series, requirements, test methods, inspection rules and marking, packaging, transportation and storage of moving coil accelerometers for seismic excitation detection.
This part applies to the manufacture, inspection and quality evaluation of moving coil accelerometers (hereinafter referred to as geophones). 2 Normative references
The provisions of the following documents become the provisions of this part through the reference of SYT5046. For all dated references, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, parties to an agreement based on this part are encouraged to study whether the latest versions of these documents can be used. For any referenced document without an import date, the latest version shall apply to this part.
GR191—1990 Pictorial marking for packaging, storage and transportation
GB/T2829—1987 Periodic inspection counting sampling procedure and sampling table (applicable to the inspection of dust production process stability)SY/T5046.1--200 Seismic geophone Part 1: Moving coil geophone 3 Product series
Geophones are organized into product series according to their main technical indicators, and their parameters shall comply with the provisions of Table 1. Table 1 Main parameters of geophones Series
4 Requirements
4.1 Appearance
Natural frequency (.) ，Iz
DC resistance (R,), n
Velocity sensitivity (G,), V/(cm's-\)
Acceleration sensitivity (G,), tmV/(cm*s-2)Rat-Ni coefficient (B,)
Distortion coefficient (D)
Transverse natural frequency (F.), Hz
Insulation resistance (R), M
Main parameter series value
8·-60
2404(HK)
31--130
0.1%, 0.2%,0.3%
180，240.250.300，500
>10. >20, >50
The surface of the detector core should be free of burrs, corrosion or other deformation, and the markings should be clear: the plastic shell should have a smooth surface without scars, nodules and other defects: - The surface of the combined line is round and not damaged, the length meets the requirements, the metal parts on the clips and plastic shell are free of rust and deformation, and the connectors are not loose.
SY/T 5046.42002
4.2 Technical indicators and classification
The detector is divided into A, B, (class I according to its tolerance range, its main technical indicators are shown in Table 2. Table 2 Main technical indicators tolerance and value limit range (reference temperature 20℃±2.5℃) Serial number
Natural frequency (F,), Hz
DC resistance (R), n
Velocity sensitivity (G,), V/(cm\s\)Acceleration sensitivity (G), mV/(m*s2)
Limiting coefficient (B)
Distortion coefficient (1))
Transverse natural frequency
(Fa), I
F. = 8Hz~-14Hz
F,≥28Hz
Insulation resistance (Ri), Mn
4.3 Reliability
Tolerance and value limit range
The reliability of the detector in actual use is expressed by the number of repeated drop tests (the drop height is 1rn). Its technical indicators are shown in Table 3a
Table 3 Number of repeated free falls
Frequency (F,)
<8 or>28
≥1500
The detector environmental requirements should meet the requirements of Table 4. No.
5 Test method
5.1 Test environment
Test items
Use environmental conditions
Drop countbZxz.net
Table 4 Environmental requirements
Transportation and storage environmental conditions
-Room temperature 20℃±2.5:
Test conditions
Temperature -40℃--+ 70℃
Temperature -40℃-+70℃, relative humidity 90%+-
Relative humidity <85% (test equipment requirements): The influence of electromagnetic and vibration interference is less than 1/10 of the tolerance of the detector technical indicators. 5.2 Uncertainty of main test equipment and test system SY/T 5046.4--2002
5.2.1 The uncertainty of the test equipment system (excluding the vibration table) should be better than -1/3 of the tolerance of the measured parameter, and the measurement range can cover the measured parameter.
5.2.2 Main test equipment:
Signal source;
Frequency meter;
Distortion analyzer;
Phase meter:
Dynamic signal analyzer:
Digital multimeter;
Vibration table and power amplifier:
Standard vibration detector (or standard acceleration sensor plus charge amplifier); megohmmeter (100V);
Frequency test system.
5.3 Appearance inspection
Visually inspect the appearance of the detector, which should meet the requirements of 4.1. 5.4 Single parameter test method
5.4.1 Natural frequency (F,)
Test the natural frequency of the detector according to the method specified in 6.3 of SY/T5046.1-2000, and the test result should meet the requirements of 4.2. 5.4.2 DC resistance (R.)
Use the ohmmeter of a digital multimeter to test the DC resistance of the detector. The result should meet the requirements of 4.2. 5.4.3 Sensitivity (G)
5.4.3.1 See Figure 1 for the principle block diagram of the detector sensitivity test. Digital multimeter 1
Digital multimeter 2
Vibration table
5.4.3.2 Test steps.
Power amplifier
Note 1: J1—detector to be tested; J2—standard inverse sensor. Rate meter
Positive wave signal generator
Note 2: The vibration table is a vibration table with measures to prevent external vibration interference: Figure 1 Principle block diagram of detector sensitivity test Fix the standard acceleration sensor and the detector to be tested coaxially and rigidly at the center of the vibration table - Adjust the sine wave signal generator so that its output signal frequency is 80Hz; - Adjust the power amplifier so that the vibration acceleration output by the vibration table is 10m/s2 - Measure the output voltage peak value of the detector to be tested and divide it by 10m/2, which is its acceleration sensitivity. 3
SY/T 5046.4-—2002
The velocity sensitivity of the detector is calculated according to formula (1): Wu Zhong:
G, = 2 yuan/·G,
G——Velocity sensitivity of the tested detector (at 80Hz), V/(cm*s); acceleration sensitivity of the tested detector (at 80Hz), mV/(m*--)Ga
Test frequency, 80H
5.4.3.3 The test results shall meet the requirements of 4.2. 5.4.4 Damping coefficient (B)
Excite the tested detector according to the method specified in SY/T5046.1-20006.6, collect the response signal of the detector (the schematic diagram of the detector response signal is shown in Figure 2), and calculate the damping coefficient of the tested detector according to formula (2). The test results shall meet the requirements of 4.2. 0
A—Peak amplitude (V):—12Peak amplitude time interval (s) Figure 2 Schematic diagram of detector response signal
B, = 4.53F.-
Wherein:
Bt——detector Ni coefficient;
F. Detector natural frequency, Hz;
—Time interval between two half-peak values of the detector response signal,%. 5.4.5 Distortion coefficient (D)
Test the detector distortion coefficient according to the method specified in 6.7 of SY/T5046.1-2000, and the test result shall meet the requirements of 4.2. 5.4.6 Transverse natural frequency【Fs!
Test the transverse natural frequency according to the method specified in 6.8 of SY/T5046.1-2000, and the test result shall meet the requirements of 4.2. 5.4.7 Insulation resistance (R1)
Test the insulation resistance of the detector according to the method specified in 6.12 of SY/T5046.1-2000, and the test result shall meet the requirements of 4.2.
5.4.8 Reliability
Perform repeated free fall test according to the method specified in 6.9 of SY/T5046.1-2000, and the test result shall meet the requirements of 4.3. 5.5 Comprehensive parameter test
A special detector tester (or test system) can be used to test the comprehensive parameters of the detector: When using a special detector tester (or test system) to test the detector, it should be ensured that its test method meets the single parameter test method or is equivalent to it. The special gun used 4
The filter tester (or test system) should be verified (calibrated) and qualified. Inspection rules
6.1 Type inspection
6.1.1 Type inspection should be carried out in any of the following situations: - new product finalization identification; - after production, the structure, process, and material have major changes that may affect the performance; - when the product is discontinued and "resumed production"; - when the inspection results are significantly different from the previous type inspection; - when the superior quality supervision agency makes a request. 6.1.2 Type inspection items are shown in Table 5.
Table 5 Inspection items for detector
Inspection items
Natural frequency
DC resistance
Sensitivity
Damping coefficient
Distortion coefficient
Transverse natural frequency
Insulation resistance
Reliability
Technical requirements
Note: “” indicates mandatory inspection items, “” indicates optional items. Test method
SY/F 5046.42002
Inspection type
Type inspection
Factory inspection
6.1.3 Samples for type inspection shall be randomly selected from trial samples or batch products. According to the provisions of GB/T2829, a single sampling plan is adopted, the discrimination level is 1, the unqualified quality level RQL is equal to 10, the qualified judgment number A. is equal to 1, and the unqualified judgment number R. is equal to 2. Reliability test According to the provisions of GB/T2829, a single sampling plan is adopted, the discrimination level is 1, the unqualified quality level RQL is equal to 25, the qualified judgment number A. is equal to 1, and the unqualified judgment number R. is equal to 2.6.1.4 The samples are inspected item by item according to the various technical indicators specified in 4.1, 4.2, and 4.3, and the total number of unqualified products is accumulated in units of products.
6.1.5 According to the inspection results of the samples, if the number of unqualified products found in the samples is less than or equal to the qualified judgment number A, the type test is judged to be qualified; if the number of unqualified products found in the samples is greater than or equal to the unqualified judgment number R:, the type test is judged to be unqualified. .2 Factory inspection
6.2.1 Factory inspection items are shown in Table 5.
6.2.2 Each detector (or each string) shall be tested item by item according to the inspection items specified in 6.2.1. If any of the indicators are unqualified, the detector (or string) shall be judged as a defective product and the defective products shall not be shipped out.2.3 Defective products are allowed to be repaired and then re-inspected according to the provisions of 6.2.2. 5
SY/T 5046.4—2002
7 Marking, packaging, transportation and storage
7.1 Marking
The content of product marking includes:
Product model mark, product standard number:
Production month;
Product number;
Manufacturer's name or trademark.
7.2 Packaging
The detector is packed in boxes, and the packaging icon is marked in accordance with the provisions of GB191. The technical documents accompanying the factory include product instructions, certificates of conformity, packing lists, etc.
7.3 Transportation
The detector can be transported by sea, land or air. 7.4 Storage
The detector should be stored in a ventilated warehouse with a temperature of -40C to +70℃, a relative humidity of less than 90%, no corrosive gases and strong electromagnetic fields. If the ground is damp, it should be placed on a wooden board with a height of 30eTn to 5Ucm.3 The samples for type inspection shall be randomly selected from the trial samples or batch products. According to the provisions of GB/T2829, a single sampling plan is adopted, the discrimination level is 1, the unqualified quality level RQL is equal to 10, the qualified judgment number A. is equal to 1, and the unqualified judgment number R. is equal to 2. Reliability test According to the provisions of GB/T2829, a single sampling plan is adopted, the discrimination level is 1, the unqualified quality level RQL is equal to 25, the qualified judgment number A. is equal to 1, and the unqualified judgment number R. is equal to 2.6.1.4 The samples shall be inspected item by item according to the technical indicators specified in 4.1, 4.2, and 4.3, and the total number of unqualified products shall be accumulated in units of products.
6.1.5 According to the inspection results of the samples, if the number of unqualified products found in the samples is less than or equal to the qualified judgment number A, the type test is judged to be qualified; if the number of unqualified products found in the samples is greater than or equal to the unqualified judgment number R:, the type test is judged to be unqualified. .2 Factory inspection
6.2.1 Factory inspection items are shown in Table 5.
6.2.2 Each detector (or each string) shall be tested item by item according to the inspection items specified in 6.2.1. If any of the indicators are unqualified, the detector (or string) shall be judged as a defective product and the defective products shall not be shipped out.2.3 Defective products are allowed to be repaired and then re-inspected according to the provisions of 6.2.2. 5
SY/T 5046.4—2002
7 Marking, packaging, transportation and storage
7.1 Marking
The content of product marking includes:
Product model mark, product standard number:
Production month;
Product number;
Manufacturer's name or trademark.
7.2 Packaging
The detector is packed in boxes, and the packaging icon is marked in accordance with the provisions of GB191. The technical documents accompanying the factory include product instructions, certificates of conformity, packing lists, etc.
7.3 Transportation
The detector can be transported by sea, land or air. 7.4 Storage
The detector should be stored in a ventilated warehouse with a temperature of -40C to +70℃, a relative humidity of less than 90%, no corrosive gases and strong electromagnetic fields. If the ground is damp, it should be placed on a wooden board with a height of 30eTn to 5Ucm.3 The samples for type inspection shall be randomly selected from the trial samples or batch products. According to the provisions of GB/T2829, a single sampling plan is adopted, the discrimination level is 1, the unqualified quality level RQL is equal to 10, the qualified judgment number A. is equal to 1, and the unqualified judgment number R. is equal to 2. Reliability test According to the provisions of GB/T2829, a single sampling plan is adopted, the discrimination level is 1, the unqualified quality level RQL is equal to 25, the qualified judgment number A. is equal to 1, and the unqualified judgment number R. is equal to 2.6.1.4 The samples shall be inspected item by item according to the technical indicators specified in 4.1, 4.2, and 4.3, and the total number of unqualified products shall be accumulated in units of products.
6.1.5 According to the inspection results of the samples, if the number of unqualified products found in the samples is less than or equal to the qualified judgment number A, the type test is judged to be qualified; if the number of unqualified products found in the samples is greater than or equal to the unqualified judgment number R:, the type test is judged to be unqualified. .2 Factory inspection
6.2.1 Factory inspection items are shown in Table 5.
6.2.2 Each detector (or each string) shall be tested item by item according to the inspection items specified in 6.2.1. If any of the indicators are unqualified, the detector (or string) shall be judged as a defective product and the defective products shall not be shipped out.2.3 Defective products are allowed to be repaired and then re-inspected according to the provisions of 6.2.2. 5
SY/T 5046.4—2002
7 Marking, packaging, transportation and storage
7.1 Marking
The content of product marking includes:
Product model mark, product standard number:
Production month;
Product number;
Manufacturer's name or trademark.
7.2 Packaging
The detector is packed in boxes, and the packaging icon is marked in accordance with the provisions of GB191. The technical documents accompanying the factory include product instructions, certificates of conformity, packing lists, etc.
7.3 Transportation
The detector can be transported by sea, land or air. 7.4 Storage
The detector should be stored in a ventilated warehouse with a temperature of -40C to +70℃, a relative humidity of less than 90%, no corrosive gases and strong electromagnetic fields. If the ground is damp, it should be placed on a wooden board with a height of 30eTn to 5Ucm.
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