Some standard content:
S75.180.01
Registration number: 6836—2000
Petroleum and natural gas industry standard of the People's Republic of China SY/T 5320-2000
JZ series weight indicator
JZ weight indicator
Released on 2000-03—10
State Administration of Petroleum and Chemical Industry
Implemented on 2000-10-01
SY/T 5320—2000
This material standard is a revision of SY/T532093JZ Series Weight Indicator. The revision retains the still applicable contents of the original standard. At the same time, according to the actual situation of J series weight indicator manufacturing in my country, the following major modifications are made to the technical content of the standard
1. In Chapter 3, Type Specifications and Composition, 4 specification series products are added and 2 specification series products are deleted. 2. Environmental service requirements and their corresponding test methods are added. 3. Reliability requirements (mean time between failures) and their test methods are added. 4. Added type inspection and judgment rules
This standard will replace SY/T 5320-93 from the date of implementation. This material is issued by China National Petroleum Corporation. This material standard is under the jurisdiction of Petroleum Instruments and Meters Professional Committee. Drafting unit of this standard: Instrument Factory of Jianghan Petroleum Administration Bureau. Main drafters of this standard: Du Wangbin, Ding Ming, Huang Guizhen, Zhang Yihong, Qiu Xiuhong. This standard was issued for the first time in July 1989 and reconfirmed in 1993. This is the first revision.
Petroleum and Natural Gas Industry Standard of the People's Republic of China JZ series weight indicators
JZ weight indicator
SY/T 5320--93
This standard specifies the type, specification and composition, requirements, test methods, inspection rules, marking, packaging, transportation and storage of J7. series weight indicators (hereinafter referred to as weight indicators): This standard applies to the manufacture, inspection and quality evaluation of weight indicators. 2 Referenced standards
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. The parties using this standard should explore the possibility of using the latest versions of the following standards. GB19[—1990 Pictorial symbols for packaging, storage and transportation GB/T13384-1992 General technical conditions for packaging of electromechanical products 5Y/I5134-93 Environmental test methods for petroleum exploration and development instruments Test G: Pull (sine) test 3 Types, specifications and composition
3.1 There are three basic types of weight indicators: vertical, side-mounted and straight-pull. 3.2 The models and specifications of weight indicators are shown in Table 1. 3.3 The weight indicator consists of two parts: a dead rope fixer, a weight indicator and a weight recorder. Table 1
J2601>
Maximum dead rope tension
Models and specifications of weight gauges
Maximum load
[）J260 type weight gauges only have direct pull type weight gauges, and their maximum output pressure is 4.2MPa4 Requirements
4.1 Environmental conditions:
Temperature: -40 +55℃.
Relative humidity: not more than 95%.
National Petroleum and Chemical Industry Bureau 2000-03～10 Approved 4200
2000－10—01 Implementation
SY/T 5320—2000
Vibration: frequency range 5～100~5Hz, acceleration 29.4m/sz, sweep rate 1Dct/min, duration not less than T30min. 4.2 The non-machined surface of the weight indicator casting should be flat, without casting edges and corners, and anti-rust treatment should be carried out. The writing on the weight indicator panel should be clear, the markings should be complete and intact, and there should be no obvious scratches on the outer surface; the parts of the weight indicator should be free of rust, and the pressure transmission pipeline should be fixed reliably and well sealed.
4.3 The maximum output pressure of the dead rope fixer: 6MPa ± 0.06MPac4.4 The allowable error of the weight indicator: ±1.0%FS; the allowable error of the weight indicating system: up to 2.0%FS. 4.5 The allowable error of the weight recorder: ±2.0%FS; the allowable error of the weight recording system: +2.5%F5. 4.6 The sensitivity limit is shown in Table 2
Table 2 The sensitivity limit of the weight indicator
Sensitivity limit
4.7 The mean time between failures (MTBF) of the weight indicator: 3000h. 5 Test method
5.1 Test equipment
a) Special test device for weight gauge: measuring range 0~～600kN, b) Standard pressure gauge: measuring range 0--10MPa, 0.25 level. c) Piston pressure gauge: measuring range 0～10MPa, 0.05 level. d) Special hand pressure pump for weight gauge: 10MPa. ) High and low temperature test chamber: -40-:-70℃, ±2℃ f) Vibration test bench.
5.2 Test method
5.2.1 Environmental condition test
5.2.1.1 Select the relative filtration condition according to 4.1. At the temperature of high temperature +55C and low temperature -40, keep constant temperature for 2h, and then carry out working performance test. The dead rope fixing device of the weight indicator, weight indicator and weight recorder shall meet the requirements of 4.4 and 4.5. 5.2.1.2 Carry out vibration test according to SY/T5134. After the test, the weight indicator shall meet the requirements of 4.4 and 4.5. 5.2.2 Appearance inspection
Monthly check the appearance of the weight indicator, which shall meet the requirements of 4.2. 5.2.3 Sealing performance test
Use a piston pressure gauge to slowly pressurize the weight indicator and recorder of the weight indicator to 6MPa, stabilize the pressure for 5min, and then slowly reduce the pressure to normal state. Check each sealing part. There should be no deformation and leakage that affects the performance. 5.2.4 Maximum output pressure and allowable error test Install the dead rope fixture of the weight indicator garment on the special test device for the weight indicator, connect the standard pressure gauge and the pressure sensor of the weight indicator with a connecting pipeline, and use the special test device for the weight indicator to slowly add load to the dead rope fixture to the maximum dead rope tension specified in garment 1, hold for 5 minutes, and after stabilization, read the indication of the standard pressure gauge [i.e. the maximum output pressure of the dead rope fixture). Repeat the test three times, and the value should comply with the provisions of 4.3.
5.2.5 Performance test of weight indicating system
5.2.5.1 Connect the weight indicator to the piston pressure gauge with a special connecting pipeline, inject No. 45 transformer oil into the connecting pipeline, and after the air in the connecting pipeline is completely exhausted, use a flexible pressure gauge to perform pressurization and depressurization tests on the weight indicator at the selected pressure test points of 0, 1, 2, 34, 5, and 6 MPa in sequence, and record the indication of the weight indicator at each pressure point. Repeat the test twice and calculate the error of the weight indicator at each pressure point according to formula (1)2
SY/T 5320—2000
. The results should all comply with the requirements of 4.4. F-×100
Wherein: 2-the error of the weight indicator, %; F-the load indication of a certain loading or unloading of the weight indicator, kN; F-the theoretical value of loading and unloading loads at a certain pressure point, kN; FFs the maximum load value of the weight indicator, kN, Www.bzxZ.net
5.2.5.2 Install the dead rope holder of the weight indicator on the special test device for the weight indicator, and connect it to the weight indicator with a special connecting pipeline. Fill the connecting pipeline with No. 45 transformer oil and drain the connecting pipeline. After the air in the pipeline is removed, use the dedicated test device for weight indicator to perform load addition and subtraction tests (including zero point and maximum load point) in sequence according to the maximum load specified in Table 1. The number of evenly distributed test points should be no less than 5. Record the indication of the weight indicator at each test point. Repeat the test three times and calculate the error of the weight indicating system according to formula (2). The results should all comply with the provisions of 4.4: _F-F×100
Error of vertical indication system, %;
Formula: A
F,—weight base indicator load value of loading or unloading, kN; F—load value of loading or unloading of the special test device for weight indicator, kN; FFS
—maximum load value of weight indicator, kN
5.2.6 Performance test of weight recording system
5.2.6.1 Connect the function recorder and the piston pressure gauge with a connecting pipeline, and use the method of 5.2.5.1 to carry out the loading and unloading test, rotate the recording paper, scratch the recording steps, and measure the recorded load value of the recorder. Repeat the test three times, and calculate the error of the weight recorder according to the method specified in 5.2.5, 1. The results should all meet the requirements of 4.5. 5.2.6.2 Install the dead rope fixture on the special test device for weight indicator, and connect it to the recorder with a special connecting pipeline, and use the method of 5.2.5.2 to carry out the loading and unloading test, and measure the recorded load value of the recorder. Repeat the test three times and calculate the error of the weight recording system according to the method specified in 5.2.5.2. The results should all comply with the requirements of 4.5.7 Sensitivity limit test (may be carried out in tests 5.2.5 and 5.2.6) Connect the parts of the weight indicator according to the method and steps in 5.2.5.2, select test points at 30%, 50% and 80% of the maximum load of the weight indicator, and after the weight indicator and recorder are stable, apply the corresponding additional load value as specified in Table 2 to carry out the sensitivity limit test: Repeat the test twice, and the weight indicator and recorder should both show discernible load changes. 5.2.8 Calculation of mean trouble-free working time At the site of use, select more than 5 sets of weighing meters of the same model and specification that have been in continuous operation according to the factory serial number. The cumulative working time of each set should not be less than 1500h: Calculate the mean trouble-free working time (MT1BEF) of the weighing meter according to formula (3). Its value should comply with the provisions of 4.7, 7
Where: MTHF is the mean trouble-free working time of the weighing meter, E: ZR
i - the number of weighing meters participating in the assessment, 1, 2, 3, ..., n; i is the cumulative working time of the weighing meter during the assessment period, h: R is the number of failures of the i-th weighing meter during the assessment period. When ≥R=0, MTBF-
6 Inspection rules
6.1 Factory inspection
SY/T5320——2000
The weight meter should be inspected before leaving the factory. The inspection items and requirements are shown in Table 36.2 Type inspection
6.2.1 Type inspection items and requirements are shown in Table 3 Table 3 Factory inspection items and requirements
Inspection items
Environmental conditions
Sealing Performance
Maximum output pressure and its allowable error
Weight indicator performance
Weight indicating system performance
Weight recorder performance
Weight recording system performance
Sensitivity limit
Average trouble-free working time
Technical requirements
Testing method
Note: "" indicates items that must be tested, "" indicates items that may not be tested. 6.2.2 Type inspection should be carried out in any of the following situations: a) When new products or old products are transferred to the factory for production; Inspection category: Factory inspection b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance; d) During normal production, an inspection should be carried out periodically or after a total of 150 sets; e) When the product is resumed after being discontinued for two years; f) When the factory inspection results are significantly different from those of the last type inspection; f) When the national quality supervision agency makes an inspection request. 6.2.3 The sampling plan for type inspection is shown in Table 4 Table 4 Sampling plan for type inspection
Batch size
4 ~-16
53 ~ 96
9720K)
200 and above
Maximum number of samples
Type inspection
Maximum number of samples
6.3 Judgment rules
SY/T5320—2000
6.3.1 During factory inspection, the weight meter that has passed the inspection of the mandatory items is allowed to leave the factory. Unqualified items are allowed to be repaired and re-inspected for the items. Only those that pass the inspection are allowed to leave the factory.
63.2 If any item in the type inspection fails, the cause should be found out and the various tests should be repeated after repair. If any item fails again, the type inspection is judged to be unqualified.
7 Marking, packaging, transportation and storage
7.1 Marking
The weight meter should be marked with:
a) the name of the weight meter;
b) the name of the manufacturer;
c) the trademark of the weight meter;
d) the number and mark of the weight meter;
e) the date of manufacture and the factory number;
↑) the product standard number.
7.2 Packaging
7.2.1 The packaging of the weight meter should comply with the provisions of GB/T13384. 7.2.2 The packaging box of the weight meter contains:
a) product certificate;
b) product manual;
c) packing list and attachment list.
.2.3 The marking of the packaging box should comply with the provisions of GB191. 7.3 Transportation
The weight meter is suitable for transportation under water, land and air transportation conditions, but it should be avoided from direct rain and snow and severe mechanical impact. 7.4 Storage
The weight meter should be stored in a dry, ventilated, no harmful gas warehouse with an ambient temperature of -40 to +55℃ and a relative humidity of less than 95%.
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