Some standard content:
ICS 17. 120
National Standard of the People's Republic of China
GB/T118262002
Generation #GB/11826-1989, B/118271939 Rotating currcntmeter
2002 09-09 Issued by
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
2003-03-01 Implementation
CBT11826-2002
Standard GB11R2, 1589 peak lift velocimeters and (compared with 182719895 energy cup spherical meter, the main contents are as follows.
Some relevant contents in GE/118261585 and GR/T11827-19 were combined and revised, and the symbols of the control formulas in the standard were revised to make them consistent with the relevant contents of the international standard) 1455:1!7 Open channel water flow straight line description is used to calculate the reverse section of the standard: when the cup industry is small, the calculation formula is multiplied by one! Modification: The seven requirements for relevant instruments in the standard have been reduced to a small extent. The technical requirements stipulated in this standard shall be provided to the relevant product design, manufacturing test and measurement methods and related product standards. When the system is missing, the standard should be selected. The product is submitted by the Ministry of Water Resources of the People's Republic of China. The National Hydrological Standardization Technical Committee Hydrological Instrument Technical Committee is the first standard drafting unit: Nanjing Water Resources and Water Resources Bureau. The main drafters of this standard are: Neng Yongxi, Gong Zhizhi, and Zu Test. The version of this standard is: 6F/T11825-1989.GR/*11827-15SS1 Scope
Rotor flowmeter
GB/T 118252002
This standard specifies the composition, technical requirements, calibration, test methods, inspection technology, packaging, etc. of rotor type velocity meter.
This standard is applicable to rivers, lakes, reservoirs, roads, hydraulic test ropes and special velocity meters (hereinafter referred to as "velocity equipment").
2 Normative referenced documents
The clauses in the following documents are not necessarily the clauses of this standard through reference. Any cited document with a valid date and its subsequent amendments (including the date or revision) are all applicable to this standard. However, the latest versions of these documents can be used as the reference standard. Any cited document without a valid date shall be subject to this standard. The latest version applies to the following standards: G393502 (1 Basic environmental test data of water meter and 2 GR/TW51998 Basic hydrological terms
S101989 Instrument terminology
5:/108-15 Hydrological instrument number product name
S:.130)-1995 Direct reduction and increase in the verification of the transfer flow avoidance method 3 Technical spectrum and definition
1S and: - Correct and the following terms and definitions are used 3.1
Starting speed strtingpee wwW.bzxz.Net
Starting continuous rotation or book urine pecking water flow speed, symbol is \ 3.2
Critical speed criticalspeed| |tt||Only in the velocity verification curve, the average water velocity at the turning point from the low-speed curve to the dead line is equal to, and is, 3.3
Only the instrument needs the additional coefficient of the instrument's rotor structure and resistance. The symbol is 43.4
Hydraulic screw pitch
Assuming that there is no friction, the rotor is guaranteed to rotate: the distance of the water point moving, check the number 5.4 Product classification and model
4.1 Working posture
The end of the instrument can be rotated at the axis of the three points, and it can move in the direction of permanent flow. 4.2 Types of velocity meters
4.2.1 The travel cup flow rate stick
The external suction blades are evenly installed on the original disc, forming a rotating cup or a rotating cup: when or in the water, the cup or the lifting component rotates: and the guest currency white thorn is installed on this rotation, so it can be called a multi-axis flow rate meter, 1
GD/T11B2E2002
4.2.2 Counter-propeller advance speed meter
A half and a half pieces with negative degrees are evenly installed in the pool, and if there are two or more rotating blades in the wheel, if the award column group is sought, it can be applied: when the water is hidden in it, the paddle can not rotate horizontally: so, it can also be called a parallel axis flow meter L.3 Water velocity relationship
The velocity received is the actual water flow, and it rotates at a certain degree. When the water speed is different from the speed of the water, the angular velocity is more stable than the water speed at the point where the flowmeter is located within the allowable normal range. By using a specially designed device to measure the number of revolutions of the rotor within a certain period of time, and then referring to the flow calibration variable or calibration equation, the water velocity can be calculated. The water flow rate can also be automatically calculated from the measured signal. 4.4 Flow rate product model naming
The flow rate product model naming adopts the standard of 10, 5 structure and basic parameters
5.1 Overview
5.1.1 Basic parts include: signal part, test part 5-1.2 Auxiliary parts include: counting part, core hanging part, special parts (measurement signal transmission line, wire and lead, etc.) 5.2 Rotor structure
5-2-1 5-2.1.1 Type Fano joint standard ring average weekly fixed filling amount of the alliance on the visual meter light real: 5.2.1.2 Rotation will be effective, for one or 3.
5-2-1.3 Rotation H diameter: rm-1vmm
5.2.2 Implementation of the pipe through the collection
5.2.7.1 Rotation meter blade pitch along the diameter of the mouth: some directions for the whole such as the right hand into the right direction of the orthogonal finger. Pulp blade number: put a leaf, one leaf or four eat. 5.2.2.2
Dye rotation white diameter, 2u mm, 31 nm, 4 mn, 3 nm, iu mm, 3 num,: \1 -un.121 mrn :5.2.7.3
5.2.2.4 Hydraulic explosion: 2nm.30mm.Hemm.100mm.12ram.2ommm.250mm.593m. 5.2. 7. 5
The only violation of the rotation is the absolute structure, the blade is not the most: 5.3 Support structure
5.3.1 Cup flow rate collection
5.3.1.1 The rotating shaft is vertical, the bearing is the top: the top of the shaft tip support structure: the upper bearing is the shaft tip support, the side cabinet support rate is the other type of support control pin structure, in the given, good storage period training should be used with the teacher case points, 5.3.1.2 The axis of the supporting structure should be adjusted to ensure the flexibility and stability of the system. 5.3.1.3 The movement of the rotating parts should be guaranteed. 5-3.2 Frequency Flow Meter
5.3.2. The supporting shaft is a horizontal spherical structure with a bearing shaft. The supporting structure of the shaft should have a good support package. The vertical center of the rotating part should be between the two supporting points. 5,3 .2.2 The time between the stations should be as required to ensure the rotation speed and stability. 5.3.2.3 How to ensure the flowmeter rotates smoothly? 5.4 Signal structure
5.4.1 The signal transmission form can be cut-off type, disk excitation type, photoelectric type, self-resistance type, etc. 5.42 The signal effect is proportional to the rotor speed. The flow rate can be rotated for one circle: the pressure should not be too small. 1: The effect of the pressure on the speed meter should not be too small. 5.4.3 The pressure on the speed meter should not affect the accuracy of the speed measurement. 5.2.4 There should be appropriate measures to prevent the false signal from flowing. 5.5 Directional structure
CB/T118262002
5.5.1 The flowmeter should be used as a directional component, and it should be equipped with a horizontal rotating and flat body mechanism with small resistance. The room should have sufficient length, size and width to enable it to automatically adjust the flow in the water. It should also be able to automatically adjust the flow in the water and maintain the flow rate. It should also be able to provide a fixed control device such as a measuring rod. 5.5.2 The room should have a balance chain to ensure that the flowmeter itself remains horizontal in the water, and have sufficient room for adjustment. It should not be vertical.
5.5.3 When the flowmeter is installed with a measuring rod, it should be equipped with a stator to indicate the direction of flow. 5.6 Counting part
5.6.1 The number of revolutions of the flowmeter rotor changes with its corresponding speed measurement. Two methods can be used: fixed timing and fixed timing. 5.6.2 The counting type is divided into two categories: automatic counting and automatic counting. 5.6-2-1 Manual counting
When counting manually, the light is used to produce a signal to indicate that the signal of the flowmeter is turned on. The speed meter should be hand-held. 5.6.2-2 When measuring automatically
, a special counter is required, and the speed meter can simultaneously record the number of revolutions and the phase trace of the flowmeter. Some meters only calculate the water flow speed and store the energy required. 5.6.3 When the counter is working, the working current and voltage added to the flowmeter touch screen should be less than its load capacity. 5.6.4 The environmental conditions for the use of the counter should meet the working environment of the flowmeter. 5.7 Parts
5.7.1 The speed meter should have a rotating base mechanism to ensure that it is aligned with the flow direction during measurement. 5.7.2 The product should have sufficient power and allow for withdrawal during use. 5.7.3 All products should be equipped with power supply parts, and special accessories such as transmission lines, base aluminum prices, etc. should meet the requirements of relevant product standards: 6 Technical requirements 6.1 The flow rate should meet the requirements of individual standards and be produced according to the approved specifications and specifications. 6.2 The flow rate should be between 0.15m/4.63m/, and the flow rate should be between 330m/~100m/. 6.3 The starting speed of the variable speed should be at least 13% higher than the lower limit of the speed range. 6. The working flow should be within the design range of 6.4. 6.5 The speed meter should give the formula for the relative error of the full load relative to the service speed level: 6.5.1 The full speed of the flow meter should not be greater than 1.8, when the speed is not greater than .13m/s, the absolute error is 12: the relative error of the full test relative standard value of the slurry flow meter is .8. If necessary, use the low-speed part as the line component, and use the low-speed part to make a table, curve and graph. The relative error is not! 6.5.2 The difference between the rated agent and the rated agent should be as follows: Table 1: Table 1 Speed segmentation and its relative error should not be
6.6 The flow should be able to work normally in the following environment: a) Limit .0 1 40.
/m1
) The shallowest water depth when the deep seat measuring rod is installed at the measuring station should not be greater than .2\, and the maximum water depth when using the measuring line should not be less than m. 3
GB/T1'826--2002
Including sand table: 1 heart/m. Small + this contains long time, the speed design can reach the various requirements, including sand table high time! High to add elastic method to wash: deep proof:
) the degree is large, 2
E-the rotating part of the flow reverser, after the adjustment is good, turn the virtual spirit coin, the parts are slow, for the blocking phenomenon, 6. The signal sound of the sun beach instrument is fixed. Slightly off, on and off, the flow selector should be hot charged. The contact value of the current selector should be 5.9. The flow rate and the parts should have sufficient elasticity, excellent anti-fouling and land or silt wave layer. For the card reversal support part, the needle and the item are made of stainless steel products as much as possible. For the light support part, the ball shaft is made of stainless steel materials.
6.1 When measuring the speed at night, the water deflection angle of the flow meter should not be more than 5°. The flow meter should also have enough freedom of movement: 5-1 The shape of the flow meter should be as small as possible. 52 The flow meter should be able to record the ball bearings, the needle should be able to withdraw the width, and the spare parts should be able to promote the replacement of the parts. The change of the system should be said, the shaft should be lubricated The instrument should meet the requirements of the relevant instrument standards. 5.13 The outer surface of the flowmeter should be carefully observed to ensure the following qualities: 1. The scale lines and characters on the flowmeter should be uniform and clear! The keys should be evenly spaced and not loose. The meter should be slightly off. Half of the meter surface should not be in contact with the external parts. The external parts should be smooth and level. There should be no unevenness. The surface of the meter should be smooth and level without marks, lines, or unevenness. No flying edges, F
6-4 The instrument box should be designed to ensure the quality:) The receiver has a new bottom with a solid. Lightweight, beautiful vision
1) The internal design of the instrument box should be reasonable to ensure that the whole machine, parts, accessories are properly placed and will not loosen during operation and maintenance, and can be kept clean;
6-15 The flow rate can only be maintained under the specified environmental conditions, in excellent waterproof, sand can not be entered or exited, and can continue to work. 8b, its performance is not as good as that of the flowmeter. 6.16 Under normal use, the flow meter must be stable for one year or a total of one year. "Whichever time interval is longer: if the flow meter is stable, the on-site comparison test or one month production test shall be carried out according to the method recommended by the manufacturer. After the original formula is proved to be stable, the original formula may be used regularly for more than two years. 6.17 Under normal use, the flow meter has a service life of 1 year. 6.18 The flow meter shall be packed in a safety box and shall comply with the requirements of G5!-2GG3.3 and 15.3 for the suspension test and self-test. The performance index of the flow should be tested by the water transport measures, and its performance index shall be based on the water transport measures. The performance index is: the test specification, the starting pressure, the boundary pressure, the formula, the relative variance of the whole line or the relative reading difference of each seat, etc. 7. The formula for the determination of the instrument is usually used in the unit of mg:
hydraulic screw. The unit is! m
speed rate, which is equal to the ratio of the total speed efficiency V to the speed measurement time T = NT, note that the formula for the origin is only used to express the effectiveness of the instrument. Indicates that the current nanny can use as much as possible, we disassemble the ear to show the constant, the medium variable hydraulic institute, GB/T113262002
flow rate in the calculation with the main fairy, each person only uses the verification formula, the cumulative use of the following part, the manufacturing unit or the standard unit should be provided with the library to provide the standard line variable table, and explain the error situation, when using these fixed points () combined inspection formula, the minimum book method should be used to calculate the value. The least squares method is calculated by the formula:
Ssw-customer
Where:
N—number of calculation points.
7.3 Flow inspection is built when the fork is installed.
4, the speed is determined by the standard of the courtyard: when the model speed is assumed to pass the production test, the high performance method is connected to the fixed speed, the liquid formula is used to make the corresponding upper resistance
5 test points from the starting speed to the upper limit value of the highest Di should be no less than 13 points, the low violation part of the measuring points should be divided more closely: the particle determination formula verification calculation points should be no less than 12 points, when the high speed is greater than 1 product m/, the actual control point and the calculation points should be added 6 to the fixed formula as the value of the smallest point: 7.7 full load relative mean square error formula
full line relative mean square error:
flow rate measurement rate, on behalf of people The speed calculated by the formula is in units of m/s (m/s); the flow meter only verifies the vehicle speed, and the unit is rN per second (r/s). 7.8 The relative error of each speed level. The calculation formula for the measurement point error is: × 100% where: 5 The relative error of a measuring point. The speed level is: Formula: Relative error of a speed point: N--. The speed level measurement number 7.9 The water temperature for the flow meter verification is generally 5.-.-+ 4
7.10 class holiday parts can be cleared - stocks should be translated and described for inspection, in the manufacturing process, tooling regulations and quality lists can be cited as enterprises have quality GHT118262002
inspection system, sufficient test basis, can be light extraction gold determination, shooting light force method should be combined with the current standard 7.11 Contents of the certificate
Flow rate Model and serial number:
Stability formula:
Range formula application range:
Range speed specification:
Initial formula accuracy (expressed as the average force of the entire line or the error of each speed seat)
Specification
Verification period and year
Verification card filling, calibrator signature
Verification unit: If necessary, provide low-speed auxiliary line, including low-speed verification point 2) Number of activities, in the verification 1 right US taste and thin method, etc. according to the provisions of 15199. Verification method
Test method table 5.
Table 2 Test method
Standard value
R, 2~-h,5
Test the internal customer
performance index
use the environment
on the situation
signal quality people
directional situation
external quality stocks
Biyazhi Institute
continuous work test
control formula model regular test environment
self-generation change test
flow energy test you
happy pass
long ice structure control
in deep water and no pressure technology·salinity, medium sand salt situation one result, bad ticket has light abnormal month measurement control combination or potential benefit factory energy mountain method change has whole month The device requires other device signal
in the long-term blood deficiency
F test gold
test light enterprise
reduced period of test, long-term inspection can maintain the performance protection standard of 5.2~6.1, the performance technology you reach, the test will be put into the double device according to the report 69592001 13.2 table: Class requirements test: G1151321 13. Test fee for the whole test, test, only the device is not damaged, not deformed, the color F remembers, the external light does not fall off
test case: only install in the relative requirements 1151 before 1..? Table 7 from the middle of the test fee, high pressure is 5
Test method: calibration B/0332-2X1 13.3 single method into the door test, test, to check the benefits of only the buckle, no shape, tight quality parts inspection, the whole edge position of the state, parts novel,
important business
Test method: children h—c! This system method needs to be abandoned seat inspection, after the test inspection business part can be completed. Test conditions: can be accepted as::
Test requirements: Kui? .3 The whole product should be tested. After the test, all parts of the instrument should be inspected. Note: No. 9 Inspection Rules
9.1 Factory Inspection
9.1.1 The batches of products produced should be inspected one by one according to the following requirements: H 71826-2002
9.7.2 The factory inspection shall be carried out by the manufacturer's quality inspection department according to the requirements of .2.~6.5, 5.7, 6.8, .33, and 6.14 of this standard.
9.1.3 Each flow meter shall be inspected and qualified by the manufacturer's inspection department, and accompanied by a certificate of conformity, a calibration certificate, etc., before it can leave the factory. 9.2 Type inspection
9.2.1 Type inspection should be carried out in the following cases: 1) When a new product or a famous product is transferred to a factory for trial production, it should be inspected periodically during normal production, regularly or after a certain amount of production; 2) When the structure, material and process of the new batch are greatly changed, which may affect the product performance; 3) When the product is discontinued for a long time and the production is suspended; 4) When the inspection result is significantly different from the previous type inspection; 5) When the national quality supervision agency proposes the requirement of type inspection. The quality inspection department of the manufacturer shall conduct a full inspection according to the inspection contents in Table 2 of this standard. 9.2-2
9-2.3 The samples for type inspection shall be randomly selected from the qualified products through general inspection, and the full inspection shall be carried out at irregular intervals.
9.2.4 Judgment rules
In the type inspection, if two channels are unqualified, the batch is judged to be unqualified: if one result is unqualified, the sub-retrograde unqualified item should be inspected daily. If there are still unqualified items, the batch is judged to be unqualified. The batch of unqualified products will be repaired and re-tested by the branch institute. If it is qualified, it is confirmed to be a batch. If it is still unqualified, it is considered that the batch is unqualified and the type inspection should be stopped. 9.2.5 The flowmeter that has passed the type inspection needs to replace the parts and pass the production inspection before it can leave the factory. 10 Marking, packaging, transportation and storage
0.1 Marking
10.1.1 The trademark pattern and production number should be engraved in a conspicuous position beside the natural gas flow. 10.1.2 The appearance of the artificial device box should have the following markings: manufacturer's name and trademark;
product model and name:
year and month of manufacture
The outer packaging box should be marked with
u) product number and name;
bj product quantity:
size and more:
) operation marks during transportation!
) to the station (wrong> and the receiving unit:
[】the station|port! Release the agricultural goods list.
10.2 Packaging
10-2.1 When packing, the flow meter and its parts and accessories (except the lever) should be properly placed in the designated position of the instrument box and pressed to prevent collision and twisting during transportation: 10.2.2 The part of the instrument connected to the flow meter should be made of soft material to avoid damage to the surface of the flow meter. tB11826--2002
When transported on the same day, the bottom of the box will be filled with the outer packaging box: there should be a space between the two boxes, and the original filling material should be dry and purchased to prove 10.2.3
For the purpose of anti-blistering
The outer packaging box can be waterproof tile The outer packaging box is required to be strong and moisture-proof, and the surface should be tied with steel teeth or plastic colored ties.
The technical documents accompanying the packing are: Packing list
Product certificate
Instructions
Fixed card
e?Resume
10.3 Transportation
The flow meter packed according to the source can be transported together with the tool. The instrument box can also be mailed. 10.4 Storage
10.4.1 The flow rate in the instrument box should be stored in the storage room at 25℃:~+55%: relative humidity less than 90%10.4.2 The accessories of the instrument pin shall not contain charcoal, carbon and other corrosive substances.1.4-3 The flow meter of the ball bearing structure should be checked and added every six months.5 The flowmeter that has passed the type inspection needs to replace the parts, and can only leave the factory after passing the production inspection. 10 Marking, packaging, transportation, storage
0.1 Marking
10.1.1 The trademark pattern and production number should be engraved in a conspicuous position beside the flow meter. 10.1.2 The appearance of the instrument box should have the following marks: manufacturer name and trademark;
product model and name:
year and month of production
The outer packaging box should be marked with
u) product number and name;
bj product quantity:
size and change:
) operation mark during transportation!
) to the station (wrong> and the receiving unit:
[】the station|port! Release the agricultural goods list.
10.2 Packaging
10-2.1 When packing, the flow meter and its parts and accessories (except the lever) should be properly placed in the designated position of the instrument box and pressed to prevent collision and twisting during transportation: 10.2.2 The part of the instrument connected to the flow meter should be made of soft material to avoid damage to the surface of the flow meter. tB11826--2002
When transported on the same day, the bottom of the box will be filled with the outer packaging box: there should be a space between the two boxes, and the original filling material should be dry and purchased to prove 10.2.3
For the purpose of anti-blistering
The outer packaging box can be waterproof tile The outer packaging box is required to be strong and moisture-proof, and the surface should be tied with steel teeth or plastic colored ties.
The technical documents accompanying the packing are: Packing list
Product certificate
Instructions
Fixed card
e?Resume
10.3 Transportation
The flow meter packed according to the source can be transported together with the tool. The instrument box can also be mailed. 10.4 Storage
10.4.1 The flow rate in the instrument box should be stored in the storage room at 25℃:~+55%: relative humidity less than 90%10.4.2 The accessories of the instrument pin shall not contain charcoal, carbon and other corrosive substances.1.4-3 The flow meter of the ball bearing structure should be checked and added every six months.5 The flowmeter that has passed the type inspection needs to replace the parts, and can only leave the factory after passing the production inspection. 10 Marking, packaging, transportation, storage
0.1 Marking
10.1.1 The trademark pattern and production number should be engraved in a conspicuous position beside the flow meter. 10.1.2 The appearance of the instrument box should have the following marks: manufacturer name and trademark;
product model and name:
year and month of production
The outer packaging box should be marked with
u) product number and name;
bj product quantity:
size and change:
) operation mark during transportation!
) to the station (wrong> and the receiving unit:
[】the station|port! Release the agricultural goods list.
10.2 Packaging
10-2.1 When packing, the flow meter and its parts and accessories (except the lever) should be properly placed in the designated position of the instrument box and pressed to prevent collision and twisting during transportation: 10.2.2 The part of the instrument connected to the flow meter should be made of soft material to avoid damage to the surface of the flow meter. tB11826--2002
When transported on the same day, the bottom of the box will be filled with the outer packaging box: there should be a space between the two boxes, and the original filling material should be dry and purchased to prove 10.2.3
For the purpose of anti-blistering
The outer packaging box can be waterproof tile The outer packaging box is required to be strong and moisture-proof, and the surface should be tied with steel teeth or plastic colored ties.
The technical documents accompanying the packing are: Packing list
Product certificate
Instructions
Fixed card
e?Resume
10.3 Transportation
The flow meter packed according to the source can be transported together with the tool. The instrument box can also be mailed. 10.4 Storage
10.4.1 The flow rate in the instrument box should be stored in the storage room at 25℃:~+55%: relative humidity less than 90%10.4.2 The accessories of the instrument pin shall not contain charcoal, carbon and other corrosive substances.1.4-3 The flow meter of the ball bearing structure should be checked and added every six months.
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