Some standard content:
UDC621.88
National Standard of the People's Republic of China
G8 854287
Specificatian for turbine gearingsPublished on 1987-12-05
Published by the National Bureau of Standards
Implemented on 1988-10-01
National Standard of the People's Republic of China
Specificatian for turbine gearings
Specificatian for far turbine gearingsUDC:621,3
GB8542--87
1.1 Applicable scope
This standard applies to the most important gears used in turbines, compressors, fans, centrifugal systems, etc. They are all in the form of single-stage gear transmission, including helical or double-stage gear transmission, single-stage gear transmission, two-stage gear transmission, etc. The standard for high-speed gear assembly with variable windage is GB1356-1 "H standard gear profile", and can also be adopted by the actual and sellers to agree on the involute ratio. The corresponding gear standard is usually B179-1 "Break-line gear and bonded gear". The gear ratio can be calculated by B3480-83 "Calculation of bearing capacity of two-side wheels of the new open line", and the calculation method of gear bonding strength is B6413-86 "Calculation method of bearing capacity of involute gear bonding". This standard does not apply to secondary gears that are integrated with other equipment. This standard includes the relevant requirements of the system, full control device, instrumentation and other auxiliary equipment. 1.2 Special requirements
When the buyer has special requirements, the ordering requirements shall prevail. 1.3 Terms and definitions
Buyer: The orderer of the gear transmission device. Specially for: the manufacturer of gear transmission.
The speed of the gear is the speed specified by the buyer on the nameplate of the gear transmission in the order contract. Rated input speed of gear transmission: the buyer shall specify the rated speed specified by the base engine in the order contract, rated output speed of gear transmission: the buyer shall specify the rated speed specified by the power engine in the order contract, continuous running speed: the speed of the gear transmission unit under the limit of continuous running speed must be at least equal to the rated speed of the small gear. For the value speed specification, it is the rated speed of the small gear. Speed: The speed of the engine's overspeed emergency device (the speed of the turbine's tripping speed is 10% of the maximum continuous speed: the speed of the turbine's rubber handle is 105% of the maximum continuous speed! 2 Technical requirements || tt || 2.1.1 The design and operation of the gear transmission device must comply with the relevant principles: Under the operating conditions of the regulations, it can operate normally for three years. 2.1.2 The noise level of the gear transmission device is determined by the city: When the A-level rating is used, it shall be determined according to (B6404--86 "Gear Light Equipment Noise Level Determination Method"). When the southern level is used, Appendix A is used. 2.1.3 The gear transmission device should be diagnosed according to the memory elimination peptide buckle 2.1.4 The components of the equipment shall be selected in accordance with the requirements of the buyer and comply with the provisions of the national standard GB18-83 (Design and Design Specifications for Fire Hazardous Electrical Equipment). 2.1.5 The equipment shall be equipped with rotating parts, bearings, auxiliary parts, instrumentation and other parts, and the equipment shall be in a normal and safe manner.
2.1.6 The gearbox does not require running-in at reduced speed at the current frequency. Beijing Standard Bureau 1987·12-05 This standard
198-10-01
GB 4542 :-87
2.1.7 The Buyer shall include in the Contract drawings and indicate the gear drive equipment 2.2
2.2.1 The gear ratings and rated power of these gear drives shall be specified in the Contract. For gear drives with prime movers connected to the drive shaft, the rated power shall be the maximum rated power of the prime mover. For gear drives with two or more gears connected to the drive shaft, the rated power shall be the maximum rated power of the prime mover. For gear drives with two or more gears connected to the drive shaft, the rated power shall be not less than the greater of the two gear drives, the maximum rated power of the gear drive required by the equipment. 0%, the rated power of the driver is shared based on the normal power consumption between the driven equipment. If the maximum torque is achieved at the base speed of the driven equipment, the torque and its corresponding soft note should be specified in the production system, and this should be used as the actual gear life. For semi-motor gear transmission devices, the impact of the momentary shock when the engine stops short should be considered. If the gear load capacity is not met, it can be referred to Appendix B and Appendix C. 2.2.2 Housing
2.2.2.1 The gear body should be of a closed or connected structure. The body should 2.2.2.2 The two parts of the box body and the bottom of the box body should be located in the reverse position. The two parts should be close to the lower part of the inner wheel axis. 2.2.2.3 The two parts should be able to prevent the blades from being deformed due to the humidity inside the box. 2.2.2.4 The oil drop should be set inside the box body as far as possible to reduce external contact. 2.2.2.5 The connection point and the method of connection 2.2. 2.6 Internal evaluation of the support and design of the micro-components - to prevent vibration, reduce damage to the transmission or repair of the internal pipeline and lubricating oil supply, and reduce the single-piece new. 2.2.2. The following arrangement of the time certificate, can reduce the net oil generation: for the device with a linear speed greater than 2m, consider the following machine structure:
dog flash step pipe bottom extremely, according to the high road report direct driver pool, a
box low bottom and the whole box lubrication standard surface of the original difference room is at least 61 heart day b.
refers to the large gear rotation direction.
d, the oil pipe of the oil system can be separated from other oil systems. Double set of auxiliary return injection interface with non-port, e.
t, there is a large clearance between the step wheel and the box. , along the inner side, a wind plate is installed to prevent the airflow from flowing. 2.2.2.8 The model is generally equipped with a degassing device, which is usually installed on the top of the ventilation box. When there is no ventilation device on the box, it is recommended to place the ventilation device close to the box. 2.2.2.9 In order to directly observe the joint of the pin, a viewing hole for the removable cover is set in the box. The width of the viewing hole should be half of the specified width. 2.2.2.1D Except for the special coating on the outside and inside, permanent coating or paint is generally not used inside the box. 2.2.2.11 The box body will be directly connected to the center of the fan. The joint surface can be sealed with appropriate sealing materials, but it must not be used. 2.2.2.12 The bottom of the support must be strong enough to prevent the damage caused by the temperature and the external environment. 2.2.2.13 For safety reasons! When the cover is on, do not remove the oil seal on the bottom of the box. 2.2.2.14 For assembly and disassembly, there should be jacking pins, lifting ears or lifting ears, as well as locating pins on the joint surface. If necessary, guides should be provided. The connection surface of the lifting tower should be self-sinking. The main end nails should be prevented from being damaged by the lifting. The joint surface should be poorly connected. 2.2.3 Box body joints
2.3.1 The gear should be light and externally certified. The overall adjustment and supply connection method should be set. G88542-87
2.23.2 The minimum oil pipe size should be determined by the total amount of the first body. Select according to the table.
2.2.4 V-wheel parts
2.2.4, 1 According to the size, the gear size should meet the requirements of 4, 5, and 6 grades specified in 179-83. 1. The wheel has a small error F, the shape error is small, the axis tooth difference method is measured, the table 1 is a small error
, iin
, Xiaochuan Haixue, ", mm
2.2.4.2 According to the bonding capacity of the surface system, the wheel step can be micro or key silver car, whether it is adopted by the actual effect can be determined by the actual effect. 2.2.4.3 The design of the helical gear should be three-dimensional. The torque caused by the axial force on the wheel should be uniform. The loss is caused by the loss of the bag.
2.2.4.4 Both the large gear and the small gear should be supported by a bearing, except for special circumstances. The overall structure shall be used. 2.2.4.5 Guarantee the potential of the balance wheel
2.2.4.6.1 The contact and vertical of the inner wheel pair of the center shall meet the requirements of [B179--83]. The inspection shall be guaranteed by the seller, and the details shall be provided to the buyer.
2.2..5.2 Before the gear is fine-tuned, shaved or ground, the shaft vibration shall be measured by mechanical or electric instruments. When the speed is less than or equal to 60m, the total runout value shall not exceed 13m. For higher speeds, it shall not exceed the value recorded by the seller.
2.2.4.5.3. The shaft stability of the meshing herringbone wheel set should be measured by reading and testing the maximum axial movement of the shaft. The amplitude of the maximum movement of the output direction should not be greater than 6m. For example, use a meter for driving inspection. hour. Its relative auxiliary position should not be greater than m, 2.2.4.6 Split wheel parts
2.2.4.6.1 Small batches are generally or integrated 22.4.6.2 When the interest rate is changed to 15m, At this time, the power of the large gear is an integral component, and the size is as small as 160m/3. It can be made independently or with the axis. According to the records, the people and the wheel holes are evenly bonded to the management of the Zhou Dynasty. The planting method given on the street: If you don’t accept the actual results, you can’t taste the ones listed in Table 2 at this level. Table 2: Measuring linear speed
Hot wok selects tooth pitch
Creating the male wheel of the doctor
Feeling the inner part
The shaft is made in one piece or hot milk Made of steel, the card is heat treated. The progress of the whole person is indeed increased by 1, and the surface of the brush handle basically meets the requirement of 3
Advance: Live as a mother.
2.2.6.1 Critical speed
CB542-87
2.2.6.1.1 The critical speed mentioned in this document refers to the insertion speed of the rotor auxiliary system The common frequency must be higher than the operating speed and then determined by calculation, which can be determined through the operation test. 2.2.6.1.2 During the starting and processing of the rotating parts, any damage will occur when the critical speed is exceeded. 2.2.6.1.3 The gear rotor should have a critical speed. The actual operating value is the same as the corresponding critical speed. The speed of compensation is a complete product, and the specific value is agreed between the buyer and the seller. 2.2.6.1. When the gear rotation method 4 is faced with early rotation, the following factors should be considered: 1: Bearing tear film elasticity and gear box support components. h.: Joint device high light Half of the total mass is made on the shaft of the light rotor with low-speed teeth. Both sides are "checked", and the rotor can be divided into parts without mold maintenance. 2.2.6.2
All parts should be leveled after final assembly, and the rotor with a single key of the coupling should be in place. The maximum unbalanced force allowed by Zhun's pre-certified batch shall not exceed % of the static load when the rotation speed is continuously insufficient. The continuous large-capacity output of the industry is calculated by the above formula. U, - 0.9120 × 10 mir.
For the gears that are rotated at a high speed and measured again, the rest of the remaining parts can be agreed upon by the buyer and seller. The 2.2.6.8 report
assembly must be classified as a wheel. During factory testing, it operates at the highest continuous training speed or other speeds specified by the manufacturer. The inner measurement of the horizontal distance that can be shot at each diameter is that the double grip of the hand must not exceed the value specified in formula (2) or 50. Compare the two. A = 25.4 ~
12000+6.35
Formula: The vibration of the package and the double maximum of the active and non-moving wave, Tm: Continuous speed of the full charge, r/min.
Formula (2), holding value, the second term is the moving value. The analysis of the moving package indicates that the breaking movement and the good feelings are moving. Since the moving shear is small,
is correct for the drive: the vibration value at the speed of the buckle should not exceed the sum of the total vibration value and 13. When the plate is moved and cannot be measured on the racket, it can be measured on the racket. The effect will be determined after buying and placing it. 2.2,7 inheritance
2.2.7.1 Both radial and thrust axis ratios should be dynamic pressure sliding bearings. 2.2.7.2 The inter-radial rail is of split type, with movable pins along the edge, and is fully auxiliary. It is determined if it can save ground. The shaft can restrain the uncertainty of the body's dynamic force, and as long as there is sufficient damping, the rotor root motion can be controlled below the specified vibration value. 2.2.7.3 The selected force bearings have the ability to prevent locking in both directions. Both innovations should be provided with continuous force lubrication. The set-type thrust plate should be rechargeable and fixed to prevent vibration and wear. When using a special thrust plate, the original position of the plate should be left on the car to facilitate the lifting and lowering of the thrust plate. The thrust force on both surfaces is less than 1G, and the axial yaw value is less than 13m. 2.2.7.4 The selection of push bearings should take into account all certain working conditions. Under the specified conditions of rotation speed, lubricant and lubricant temperature, the load it bears should not exceed % of the maximum allowable load of the bearing. The axial direction of the difference transmitted by the shaft insert should be superimposed with the internal thrust. G 8542-a7
If one or more people press one or more people to turn or come to Baiyang point to close each round, these push the bad deposit to increase. It is often considered that the maximum external force transmitted by the thruster is pressed down, and the single-station package must be driven by the rotating device and the use of simple bearings. The maximum external force is equal to the electric power. If the maximum centering force does not meet the requirements, the rated power of the gear can be calculated by multiplying it by 1.5/W. b. For the gear coupling in this situation, its torque is at least equal to D./, and its (N·m) is sufficient to meet the maximum torque that F can work. () is the requirement for coupling performance. . c. For diaphragm couplings that are not in communication with the previous market, the external force should be reported to the coupling manufacturer! If there is no reverse, please use a rotating lamp: Section .
2.2. Oil supply and discharge seal
2.2..1 The bearing box is an integral part of the entire step wheel box. There should be enough strap size to avoid moisture leakage or leakage after sealing:
2.2..2 The design of the auxiliary box should be suitable for installation. The structure of the deep head and the independent market will depend on the structure of the deep head: the use of these probes should be specified in the contract. 2.2. .8 The shaft seal should be fan-shaped, and the sealing teeth should be made of metal materials that produce dust and sparks. The auxiliary design must prevent upper stagnation and secondary interference.
2.2.9 Lubrication
2.2.9.1 Use karma lubrication as the wheel assembly, including gear tooth end lubrication. 2.2.9.2 The lubrication system shall comply with the requirements of the fan lubrication and fuel-saving systems. 2.2.9.8 Unless otherwise specified, the lubricating oil used is No. 20 minus No. 30 steam turbine. Standard: 2.2.4.4 Gear device design considerations. When the berthing humidity is 60, the oil change temperature should not be higher than 82.2.10 Information
2.2.10.1 The material name of the wheel assembly shall generally be the national cup material that will comply with the requirements of the ordering data sheet and this standard. If it is not a standard raw material, its function, chemical composition and testing requirements should be stated. 2.2.10.2 In order to ensure safety, the prohibited party shall conduct tests and inspections in accordance with relevant laws and regulations, and these tests shall be carried out in two-position inspection facilities. When necessary, the buyer shall specify the attached tests and inspections. 2.2.10.3 The number of welds performed on the rotating parts shall be in accordance with Section 741 of the "Technical Conditions for Welding Machines". 2.2.10.4 The welds on the rotating parts shall be transparent. Except for the left side which can be deep In addition, all welding shall be 50% done. 2.2.10.5 It is not allowed to perform welding on the surface of the wheel. 22.10.6 Regardless of whether the box body or the single-joint shrinkage structure is supplied, the front and outer surfaces shall be processed with high precision. 2.2.10. The material certificate of the main load-bearing parts shall be kept for at least 2 years after shipment. The certificate shall include the following chemical and physical properties of the sample and parts.
Heat treatment data. And the final hard virtual mask
For the determined deformation layer depth formula e, for the tempering gear, a minimum measurement of the dispersion is indeed acceptable. 2.8 Auxiliary peptides
2.3.1 General
In the third stipulation of the contract, the connection between the south wheel device and the driving machine and the engine should adopt the thermal relationship of standard requirement 1. According to the requirements. 2.3.2.2 The internal and external circuits shall be manufactured according to the coupling standard 7. The distance shall be specified for the joint coupling. 2.3.2.3 There shall be other minimum requirements. The coupling shall be balanced. The small wheel device equipped with the auxiliary child-avoidance disease transmission can be used to determine the 5 pictures of the book
2.5.3 joint beater expansion
GH8542-7
2.3.3. The coupling guard 1 should be used as the outer part of the coupling. It should be of a certain degree and must be able to withstand other 0N loads without any obvious shape. ||tt ||2. Many, named continuous moisturizing or shaft groups, the protective cover should preferably have a central rain separation, and the shaft end should be blue to connect to the oxygen forest, so as to ensure smooth operation during operation:
2.3. Control equipment and measuring devices
Control equipment and lubrication devices shall comply with relevant regulations. 2.8.5 Pipes and accessories
2.3.5.1 All pipelines and accessories shall be lubricated. Accurate, tight and regulated oil system requirements. 2.8.5.2 The discharge sleeve pipe outside the box and the oil discharge joint of the continuous lubrication coupling should be equipped with an agent. 3 Test
a.1 Total!
3.1.1 The gear assembly should be tested according to the requirements of 7.2. Other tests specified by the buyer are stated in Article 3.3 2. For gears with lower energy consumption, ensure that the operation performance complies with this standard. If possible, it is not necessary to make the trial error specified in 3.3. 8.1.2. The date of the test should be one week in advance. 3.1.3 After the test in 3.2 and 3.3 is passed, the seller will still make a performance test report on the on-site operation. 3.2. No-load operation test 3.2.1 The gear assembly load operation test is carried out in the following order: "Run at the highest continuous speed until the bearing and lubricant temperature stabilizes: h, the speed is about 1% lower than the trip speed, and run for at least 15min (when the product is the original power motor, do not decelerate to the highest continuous speed, and perform 2-4d: The buyer shall provide other gear tests specified by the contract company. 3.2.2 The gear assembly no-load operation test shall meet the following requirements. The gear assembly shall use the bearings specified in the contract. The lubrication, force, temperature and contact shall meet the technical requirements of the price and actual operation. The cleanliness shall reach 25mb. The potential at the joint between the box and the system shall be checked to eliminate any c. Check all alarms, protections and controls, and calibrate and adjust as required. d. If necessary, the test shall be carried out under simulated coupling conditions. 3.2.3 During the running test 1, the running performance of the entire installation shall be satisfactory, and the alarm measurement shall not exceed the requirements of 2.2.6.3. S2.4 After mutual agreement between the parties and the seller, a vibration audit shall be carried out. At the maximum continuous speed, the vibration of all frequencies except the synchronous frequency shall be verified by scanning. The scanning shall at least include the following frequencies; one-third of the synchronous speed of the low-speed gear to more than four times the commercial speed, but not less than 1000Hz.
8.2.5 Test to verify that the critical rotation speed meets the requirements of 2.2.6.1.3. 3.2.B During the running test, in addition to the seller's standard instruments, The following table is also required: "During the test, the embedded dynamic displacement probe and vibration isolation device configured with the product should be used. If for other reasons, the seller's test bench with measuring and display equipment can also be used after verification. b. In the light operation test, the maximum frequency, double amplitude and phase displacement should be measured and recorded, and the vibration position indicator should also be used. The wave density display value should be used as the basis for acceptance of the perturbation limit value. 8.2.7 After the operation test is completed, the gear assembly should be opened for testing, and the gear should be checked for major damage and marks according to the condition of the gear, and the bearings and shafts should be checked. If the test and appearance inspection are qualified, the assembly can be reassembled and shipped. 8.2. According to the test results, the damage should be inspected. If the assembly needs to be collected and the original test equipment cannot be repaired, it should be replaced or improved. a.2.9 Only when the quality wheel spare parts ordered are produced at the same time as the whole machine, these parts will be tested under empty load. 6
GB8542-87
3.2.10 The detailed record of the test conditions of the actual product shall be provided, and the items recorded shall include:. Temperature of the person mooring:
h, flow:
full filter
6. Special and product:
e. Hand quality.
3.3 Optional test
Whether it is necessary to reach: the test should be in accordance with the provisions of "a", full load and full speed test. Deng shall give the total width of the wheel assembly test to the transfer bucket until the transfer and lubricating oil temperature are determined as the test limit (according to the negative limit) determined before ordering. h, weak depth, low speed test. Under the appropriate technical conditions for the test equipment, the rated torque of each rail is added to the annual operation test, and the rated pull penalty is corresponding to the specified value in the specification, and the selection of the specified rotation seat is required! The duration of the test should be discussed before ordering. The test method only verifies that the surface of the work is under the condition of the waist and has the competitive load capacity, and does not test the temperature and length of the work. The static test of the rated torque is given to the fixed gear shaft, and the new small room is added with 1 agent, and the above test is required.
d, operation level test, to be carried out separately
4 Inspection
4.1 General
4.1.1 In the contract, the buyer shall provide the buyer with the inspection requirements in the near future. The seller shall provide the buyer's inspection requirements in the near future. The seller shall provide the buyer's inspection requirements in the near future. 4.1.2 The seller shall keep the following information for both parties to review: 8. Electrical material (live steel) quality certificate, including the test bench or later. b. Specifications and technical conditions of purchased parts. e. Empty load operation test data and other test data of the company. d. Test results of the steam turbine quality (see 3.2.4.5). 1.1.3 Before the assembly and comparison tests, each component shall be cleaned by the pipeline cleaning method (acid separation or other suitable standards) to remove impurities (such as chlorine, mold, leather, socks, etc.), and the components may be cleaned for a period of time. 4.2 The welds of the rotating parts, gears and shafts, and all other parts must be inspected. All accessible surfaces shall be inspected after they have been repaired and repaired, and after the stress is removed. The inspection shall be repeated after the stress is removed. The inspection shall be carried out by magnetic or deep inspection balls and X-ray inspection. 4.2.2 Inspection methods and acceptance criteria shall refer to the relevant specifications of 741-80 of January 2000 or the party concerned. 4.3.1 All gear teeth of large and small gears shall be inspected by reverse running flaw detection. For large gears, the inspection by penetrant flaw detection may also be carried out. It is not effective. When there are metal inclusions or linear marks larger than 1.5mm on the tooth surface or gear, the buyer and the party shall make a decision based on the actual situation through cooperation. : The performance model is to push the relevant system to make the maximum change according to the method 4.3.2 Note that the steel parts must meet the following requirements, and the steel and extension shall not have teaching lines, marks, disassembly, holes and other similar defects. The teaching ratio and material damage of the main rotating parts. After each month of work, a light inspection must be carried out. 5 Marking, packaging, shipment, storage
GB B542-87
The network nameplate and the number of the world nameplate are clearly stated in the previous application of the adjustment of the blue wheel box. The following contents are: 4
Special title!
Model and specification
Gear ratio:
Rated speed:
Rated input speed!
Color specification,
Overuse coefficient ().
: The gear system of C34-8 is designed by the bearing number, and the gear system is integrated. , The system efficiency K in the attached quantity D can be more than the standard tube, and the joint position, 5.2 Packaging and transportation
6, 2.1 The equipment is packed after the production inspection and test are completed. 5.2.2 Packaging technical requirements, all products except the machine bottle processing table should be in accordance with the standard of the West. ,
The exposed surface of the metal part of the machine should be coated with a comprehensive anti-rust agent. The gear installation stomach should be strictly coated with an anti-rust agent that can eliminate the rust. The government steel fixed lubricating oil system equipment, such as the standard science. The internal surface of the customer and the sound channel should be coated with an appropriate oil drop prevention agent. d.
All flange holes shall be double-sided with a minimum thickness of 5 and be padded with rubber wire sheets. At least 4 bolts and bolts shall be installed with solid steel screws. The new installation and the old installation shall be marked.
The packaging pins shall be marked with the contract item number and the installation sequence. The weight and net weight shall be marked. All separate seals shall be semi-sealed with a gold plate with a serial number, and the plate number and the installation number shall be marked. 1. Single packaging shall not be left unloaded. The rotating bracket shall be flexible. 5.3 Initial storage
5.3.1 The equipment can be stored for at least 1 month from the time of installation. If the overdue storage effect is to be considered, the buyer shall agree with the seller on the corresponding discount.
5.3.2 Each rotor should be able to operate for at least 1 year in an indoor environment that is not exposed to heat, has good ventilation, and is immersed in the atmosphere. The joints should be rust-proof, moisture-proof on the outside, and resistant to cracking or gas release on the inside. 6 Guarantee
On the premise that the party selects the product properly and complies with the storage and use regulations, the product can be used for less than one year (not exceeding 18 months from the date of shipment by the seller). If the gear product is of poor quality and is damaged or the performance does not meet the contract requirements, the seller shall not be required to carry out necessary transportation, repair or replacement of parts. T Seller's Information
7.1 The seller shall provide the buyer with necessary technical information to confirm the gear device's design and manufacturing requirements, and explain the installation, operation, and maintenance methods of the gear device. 71.1 Data (Compliance Certification)
.． Main six inches!
Gear contains side;
Rejection of gap
Empty and heavy style car pool request:
GB 8542-87
Exempt contract non-ferrous metal sales market regulations, should be happy to break the trial report: 7.1.2. The drawings provided to the buyer should include the following contents: Assembly system: Overall dimensions, detailed configuration and weight of the vehicle: Model, size, quality and marking of the connecting parts. Gas and water are included in the assembly parts. Pipes and connections: Installation drawings and transfer instructions, including the type, size and expansion ratio of the coupling. 7.1.3 General information for use: Fire and light equipment, including precautions, special instructions for use when necessary; b. Installation technical requirements, including the layout diagram and load distribution diagram, d. Technical requirements for the operation of the engine, the end machine, including the requirements for the lubrication and maintenance of the system! Maintenance and repair of the equipment requires the customer to provide instructions for the maintenance and repair. If the actual party and the equipment are also required, the method of negotiation will be agreed upon by the company. The actual party shall provide the buyer with the necessary delivery instructions, including the complete supply scope of the supply order, packing list, equipment list: all poor material station list, GE 8542—87
Appendix A
Sound pressure level specification for turbine transmission (supplement)bzxz.net
A1: The turbine product level is an indicator of the overall quality of these turbine products. This appendix is suitable for the turbine transmission equipment and its specifications, and provides the limit of the sound pressure level (A), A2: The turbine transmission equipment specified in the specification shall have the following items: The test shall avoid the critical speed
, and shall be carried out under sufficient evidence! (The test shall be carried out in a system connected with the entire rotating component: The turbine device is only a part of the entire system. In addition to the equipment, this system also includes the drive machine, transmission equipment, secondary equipment and acoustic environment. Etc., each part of the British may be able to step test the sound of the device (A) value. Classification as its "within the test conditions, the medical grade of the wheel device () is within the specified range of use or specified in Figure A1. In this plan, the net field also shows the measured data: A.3-position device:
A.3.1 The grade 14-level convex level measurement is purchased according to the (13785-83 "Electrical, acoustic and test methods for grade meters" and the type of frequency determination above the city allows the city to make this.
A.3.2 When performing full frequency analysis, the city's 1/1 or 1/3 scale wave filter should comply with GD3241-82 "Long-range dynamic analysis: / [1/3 times the account return device" requirements. A.3.3 After each inspection, the sound short discussion device must be The sound quality school shall be improved according to the requirements of JG176-6 "Noise Quality Calibration Equipment Trial Regulations". A,34 When measuring the sound pressure level, use the slow sound instrument first. A,4 Test conditions
.4.1, Normal flow, the test site should be a vehicle sound field. The sound pressure level generated by the test device is determined by the country's economy, so during the test, the company should try its best to combine the equipment with the steam turbine. A4,2 When testing the installation, the wheel must be installed on the same device as the one you designed, and the seller can test it by any existing machine through the transmission or coupling.
A,.3 In the absence of other requirements, the rated speed of the wheel can be used as a single test connection. A,, + load unless otherwise specified, the step is light Install these under no load to make noise. A.5+10% test
A, 5.1 The transmitter should be placed in a vertical position on the center of the vertical surface of the transmitter, and the test height should be 0.3m below the ground. The distance between the main drilling surface and the transmitter should be as specified in Table A. The distance between the main drilling surface and the transmitter center is m.
109~32:1
If the sound is not properly compensated, the average value of the readings is used as the safety limit level
A, 53 is the noise level of the noise level (A), then 13
GE 85428T
When the whole process is completed, the pressure level measurement value of the four tables is reduced by the table value. The positive value is reduced according to the simple method of GH378-3 noise source sound field. This table 2.
effective determination-
2 good production of the positive
Bailong commissioned products, the lower limit of the peak production jade system 45
A5.4 remote water wheel parts dynamic attack setting sound positive level see medical A1. LB·A
Figure A noise pressure level control
In: control a gear test transmission, the total amount of resistance into the adaptation of the center should flow to the edge
4 must be inverter m54 remote water wheel parts dynamic attack setting sound positive level see doctor A1. LB·A
Figure A noise pressure level control
In: control a internal line diagram gear test transmission, the total amount of resistance into the center of the model should be adapted to the flow of the edge
4 must be reversed m54 remote water wheel parts dynamic attack setting sound positive level see doctor A1. LB·A
Figure A noise pressure level control
In: control a internal line diagram gear test transmission, the total amount of resistance into the center of the model should be adapted to the flow of the edge
4 must be reversed m5
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