GB/T 2820.9-2002 Reciprocating internal combustion engine driven alternating current generating sets Part 9: Measurement and evaluation of mechanical vibration

This standard describes the procedure for measuring and evaluating the external mechanical vibration characteristics of the generator set at specified measurement points. This standard applies to fixed and mobile rigidly and/or elastically mounted AC generator sets driven by reciprocating internal combustion engines. This standard applies to land and marine generator sets, not to aviation or generator sets driving land vehicles and locomotives. For some special generator sets (such as power supply for hospitals and high-rise buildings, etc.), it is necessary to put forward some additional requirements. The relevant provisions of this section can be used as the basis. For generator sets driven by other reciprocating engines (such as biogas engines, steam engines, etc.), the provisions of this section can also be used as the basis. GB/T 2820.9-2002 Reciprocating internal combustion engine driven AC generator set Part 9: Measurement and evaluation of mechanical vibration GB/T2820.9-2002 Standard download decompression password: www.bzxz.net

ICS 29 60. 40
National Standard of the People's Republic of China
GB/T2820.9—2002
Reciprocating internal combustion engine driven alternating current generating sets-Part 9:Measurement and evaluation of mechanical vibrations(IS08528-9.1997.110D)
2002-08·05Promulgated
National Quality Supervision, Inspection and Quarantine General Administration
200304-01Implementation
6B/T2820% Reciprocating internal combustion engine driven alternating current generating sets-Part 9:Measurement and evaluation of mechanical vibrations(IS08528-9.1997.110D)
2002-08·05Promulgated
National Quality Supervision, Inspection and Quarantine General Administration
200304-01Implementation
6B/T2820% Reciprocating internal combustion engine driven alternating current generating sets-Part 9:Measurement and evaluation of mechanical vibrations(IS08528-9.1997.110D) Machine (called August 282: 993) Part 3: Converter generator for agricultural power group (15528-: 1331 Part 4: Control devices and switchgear 8: 93 Part 6: Test methods (15028-: 19) Part: Technical specifications for technical components and section meters (cgS) -7: 1991) Part 8: Test for small power transformer units () 825-8: 199511>) Part: Vibration measurement value of machine 8:!
Part 10: Measurement of the lifting (other surface method S28-10: 198.M0 Part 12: The full installation should be replaced by the city 58-12: 1S9? MD) Part 1 is not new online supply 4 system \ Recently formulated THKANKAa
G11/T2820.9-2002
This part is modified to adopt 9289: 195 to sign the internal combustion engine driven generator set part: According to the evaluation of the goods installed. The difference between this part and the taxi is the appendix, the positive record, the letter record, and the energy plan are all data. This part was proposed by the Chinese Giant Electrical Industry Association: the wood part is under the jurisdiction of the Yizhou Power Vehicle Research Institute. This part is the main person in charge of the Lanzhou Power Vehicle Research Institute: Zhang Hongzhan, starting with Yu, age, and points.
Reciprocating internal combustion engine driven alternating current generator set Part 9, Measurement and evaluation of mechanical vibration G/T 2820. 9—2002
This part describes the procedures for measuring and evaluating the external mechanical properties of the generator set at specified test points. This part applies to reciprocating internal combustion engine driven alternating current generator sets, fixed type, movable type, rigidly mounted or elastically mounted. This part is mainly used for land-based and auxiliary generator sets, and is suitable for generator sets in aviation or auxiliary vehicles. For generator sets for certain special purposes (such as common power supply for high-rise buildings in hospitals), it is necessary to put forward some additional requirements, and this part takes the relevant regulations as the basis.
For generators driven by common power engines (such as biogas engines, steam engines, etc.), the thermal specifications of this part are not the basis.
2 Normative references
The following documents, if applicable, shall apply to this part of this standard. The dated references shall apply to any subsequent amendments (excluding those in force) or revisions to these documents. However, parties to an agreement based on this part of the standard shall consider whether the latest editions of these documents apply. For references without a date, the latest editions apply to this part of the standard. 1707 Internal combustion engine drive generator Part 829-190.
1347:1937 Rotating electric power equipment Part 7: Type 2 (M code): IS150348:1937 Impact analysis of impact velocimeters 3 Definitions
This document shall apply to the relevant provisions of SO4[ and the following provisions. This general statement shall apply. The old is a description of the detection of a single or a group of effects, such as amplification, average or effective value. The parameter is the median effective mean square value. 2:1S gate 201: In the definition, the commercial part of the two juice months in this part of the symbol and abbreviation
this part uses the following symbols:
——acceleration peak
——bit
micro drop
CB/T 2820.9--2002
The following standards, together with the dynamic quarter number, and: are used together: rms
vibration excitation value! Effective fear:
The dynamic dream value of the energy square is passed
Axial addition of the most
Drawing Beijing chaos car said disease
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Unified excitation
This gang uses the following abbreviations;
[MB-Generator tree and case installation type specified in IEC63934-7. 5 Other provisions and additional requirements
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With 10 must be tested for a company including existing marine and near-term use of the generator set, it should also meet the additional network requirements of the society. The inspection group will use the new products in the use of the sound. For the alternator running in unclassified equipment, similar additional requirements should be negotiated and approved by any user.
52 If it is necessary to store any special requirements of any other official agency (inspection and/or legislative body), the official agency will make it clear to the user before ordering.
Any ·The further reduction in the cost should be recognized by the user and the system. The measured value of E
should be increased. The speed and position measurement should be new (with the first unit) to explain the situation. From the state, the effective value of the movement speed is Vm.=
=_=“×
-（2)
If the analysis has been carried out, in the case of ball and motion connection, the effective value of the speed is obtained by the following formula: Vo++- 1
Note: The effect of the addition and displacement can also be calculated using the same card, and the speed measurement system gives the speed report. The accuracy of the effective value of this special quantity should be within 1U [GA/T 2820.9—2002
-! The error is within the range of 1000H, but the domestic error is not more than 20 in the range of *~Hz! In order to have no adverse effect on the accuracy of the visual measurement system, the effective value can be obtained by using a differential chamber or type sensor 1. [, the connection method of the measured body is not uniform when the measured body is excited, but the frequency and the maximum measurement rate of the measured device are affected. Note that this method is used. When the vibration is particularly strong, the sensor must be kept in a good position at the machine state. The installation of the meter is also designed. 3134,
8 Liu Measurement method and arrangement of measurement points
The figure shows the recommended vibration measurement points of the generator set. When this part is applicable to other types of generator sets, the new measurement points must be checked in all directions to avoid deformation at the measurement points. It can be said that your experience in the development of the deduction of the negative point in the actual travel test before the test is not necessary to correct all other points of the figure: the series type receiving machine with the overall rejection of the production flange connection of the generator
card point
on the product
dynamic learning
3. - Carbon electric Qi low seat
note, test · combined with its battery plan, into a machine, b) by the series of starting and the bracket shaft of the generator
generator red
Figure 1 The distribution of measurement points,
9 The working state of the generator set Www.bzxZ.net
Measure the vibration of the generator set, 1 Characteristic set includes: 1 Positive temperature. Rated material system. No-load load. If the generator set corrects the rated power, the measurement can be carried out under its load rate loss state. 1 The evaluation result of the rigid measurement station
The range of the excitation system heat rate of the generator set is 2z-300H: and the generator set with other components such as power supply: the state of your vehicle is extended 2H2
Inspection and protection are equipped with the source of influence and the station is necessary to reach the Yanggong I test, and the generator set also uses the standard speed of the speed determination, and the effective range is Table 1. This effective value is not allowed to be registered in the generator set.
GR/T 2820.9—2002
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It has been proved that for generator sets designed according to standard structure and components, when the alarm sensitivity is less than value 1, no damage will occur. When the alarm level is between value 1 and value 2, the structure and components of the generator should be strengthened according to the agreement between the generator set manufacturer and the parts supplier to ensure the reliable operation of the generator set. Under this condition, the alarm sensitivity may be more than value 2. But this is limited to generator sets with special structures. Under any conditions, the manufacturer of the generator set shall be subject to the negative change of the components of the generator set (see CB/2821.5-1957. 1.11 Test report The test results to be shown shall include the main validity period of the generator set and the test equipment used. These data shall be recorded in Appendix ">". Appendix A (Informative Record) Typical structure of the generator set (: H/T 2820. 9—2002
There are many ways to assemble a traditional internal combustion engine with a generator. A.1~A.6 are typical examples of generator structures: 4
Engine and generator are rigidly mounted
Motor installation
Engine rental
Generator tight installation
Light use
Coupling connection
The engine is rigidly mounted on the bottom, while the bottom frame is elastically mounted, and the bottom frame is elastically mounted, using elastic coupling connection GB/T 2820.92002
Engine and generator are elastically mounted
Use method connection
Figure A.6 The variable speed engine and the generator are connected by flanges, and the variable speed engine is elastically mounted on the bottom frame-H KAoNr KAca
Appendix 3
(Informative Appendix)
General Introduction to Dynamic Evaluation of Generator Sets
GB/T 2B7C.9—7002
It is well known that the vibration values ​​of the motor when it is running in a generator set are much higher than the values ​​when it is running alone. The typical characteristics of a natural gas machine are that it has a complex and oscillating mass, which is related to the working direction. Therefore, the generator set has a large alternating work, and the vibration values ​​are much higher than those of a rotating machine. However, due to the influence of the generator set structure, these vibration values ​​tend to remain constant during the life of the engine. By partially defining the vibration variables, we can make a general description of the vibration characteristics of the generator set and make a positive evaluation of the interaction between the performance characteristics of the unit. However, it is not possible to use fixed vibration values ​​to evaluate the vibration characteristics of the generator set. The effect of the initial disturbance stress of the fixed moving parts of the machine cannot be determined more strictly. The degree of torsion and linear dynamic support of the shaft system (potential) cannot be determined. In the generator, it is impossible to accurately evaluate the machine stress reduction by the same frequency. If the dynamic level exceeds a certain "usual value" of the generator set, the main parts in the generator set will be damaged by excessive vibration. If the whole "pass belt evaluation" is not performed, the damage of other parts and connecting parts of the generator set, control and monitoring equipment, etc. will also occur. The stability of these parts depends on their suspension structure and installation method. In other words, in some individual cases, it is very difficult to avoid the above problems even if the evaluation is in the "belt position" range. At this time, the degree of measurement is carried out through the special "partial measurement" on the generator set, such as the following. GR/T2820.92002 Appendix C (informative) Perturbation variables -TH KAoNT KAa Table C.1 Values ​​of dynamic displacement, return angle and acceleration of reciprocating internal combustion engine driven generator set Generator set carbon capacity: Item rate Calibration conversion n/
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