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DL/T 1964-2019 English PDF

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DL/T 1964-2019: Ring type distribution machine
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Standard similar to DL/T 1964-2019

JB/T 7679   GB/T 10595   GB 14784   

Basic data

Standard ID DL/T 1964-2019 (DL/T1964-2019)
Description (Translated English) Ring type distribution machine
Sector / Industry Electricity & Power Industry Standard (Recommended)
Classification of Chinese Standard J81
Classification of International Standard 27.100
Word Count Estimation 13,176
Date of Issue 2019-06-04
Date of Implementation 2019-10-01
Quoted Standard GB/T 191; GB/T 231.1; GB/T 699; GB/T 700; GB/T 708; GB/T 709; GB/T 985.1; GB/T 985.2; GB/T 1184-1996; GB/T 1348; GB/T 1591; GB/T 1801; GB/T 1804; GB/T 3323; GB 4053.1; GB 4053.2; GB 4053.3; GB/T 5117; GB/T 5118; GB/T 8110; GB/T 8923.1; GB/T 9286; GB/T 100
Regulation (derived from) Natural Resources Department Announcement No. 7 of 2019
Issuing agency(ies) National Energy Administration
Summary This standard specifies the type, basic parameters, technical requirements, test methods, inspection rules, signs, packaging, transportation and storage of circular silo ring distributors. This standard applies to circular silo ring distributors with a diameter of 30m and above.

DL/T 1964-2019: Ring type distribution machine

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Ring type distribution machine ICS 27.100 J 81 People's Republic of China Electric Power Industry Standard Ring cloth machine Refractory materials for boilers in thermal power plants 2019-06-04 released 2019-10-01 implementation Issued by National Energy Administration

Table of contents

Foreword...II 1 Scope...1 2 Normative references...1 3 Types and basic parameters...2 4 Technical requirements...3 5 Test method...8 6 Inspection rules...9 7 Marking, packaging, transportation and storage...10

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009 "Guidelines for Standardization Work Part 1.Standard Structure and Compilation". Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents. This standard was proposed by the China Electricity Council. This standard is under the jurisdiction of the Electric Power Industry Standardization Technical Committee for Coal-fired Machinery. The organizations responsible for drafting this standard. Huadian Zhengzhou Machinery Design & Research Institute Co., Ltd., China Huadian Science and Industry Group Co., Ltd. The main drafters of this standard. Yue Xinxi, Yang Xuefeng, Cao Yungai, Wan Chuanbao, Shao Cuirong, Zhang Jiuchang, Cheng Wenguang, Han Jianbin, Shi Chang Wei, Niu Junyan, Ma Aixia, Miao Zhuang, Zhang Zhipeng, Shen Jianyong. This standard is issued for the first time. The opinions or suggestions during the implementation of this standard are fed back to the Standardization Management Center of China Electricity Council (No. 2 Baiguang Road, Beijing) One, 100761). Ring cloth machine

1 Scope

This standard specifies the type, basic parameters, technical requirements, test methods, inspection rules, signs, packages of circular silo ring distributors Loading, transportation and storage. This standard applies to circular silo ring distributors with a diameter of 30m and above.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document. GB/T 191 Packaging, storage and transportation pictorial signs GB/T 231.1 Brinell hardness test of metallic materials Part 1.Test method GB/T 699 High-quality carbon structural steel GB/T 700 carbon structural steel GB/T 708 Size, shape, weight and allowable deviation of cold rolled steel plate and steel strip GB/T 709 Hot-rolled steel plate and strip size, shape, weight and allowable deviation GB/T 985.1 Recommended grooves for gas welding, electrode arc welding, gas shielded welding and high energy beam welding GB/T 985.2 Recommended groove for submerged arc welding GB/T 1184-1996 shape and position tolerance without tolerance value GB/T 1348 Ductile iron castings GB/T 1591 Low-alloy high-strength structural steel GB/T 1801 Geometric Technical Specifications for Products (GPS) Limits and Fitting Contour Method Tolerance Zones and Fitting Selection GB/T 1804 General Tolerance Tolerance of linear and angular dimensions without tolerance GB/T 3323 Radiography of metal fusion welding welded joints GB 4053 Safety requirements for fixed steel ladders and platforms GB/T 5117 Non-alloy steel and fine grain steel electrode GB/T 5118 hot-strength steel electrode GB/T 8110 Carbon steel and low alloy steel welding wire for gas shielded arc welding GB/T 8923.1 Visual assessment of surface cleanliness of steel plate surface treatment before coating. Part 1.Uncoated steel surface And the rust grade and treatment grade of the steel surface after the original coating is completely removed GB/T 9286 Cross-cut test of paint and varnish film GB/T 10045 Carbon steel flux cored welding wire GB/T 10595 belt conveyor GB/T 13306 signs GB/T 13384 General technical conditions for packaging of mechanical and electrical products GB/T 13452.2 Determination of paint film thickness of paints and varnishes GB 14784 Safety Code for Belt Conveyor GB/T 19804 General dimensional tolerances and geometric tolerances of welded structures GB 20426 Pollutant Emission Standard for Coal Industry GB 50034 Architectural Lighting Design Standard GB 50055 General Electric Equipment Power Distribution Design Code GB 50431 Engineering Design Code for Belt Conveyor GB/T 50549 Coding Standard for Power Plant Identification System GBZ 1 Hygienic Standard for Design of Industrial Enterprises DL/T 678-2013 General technical conditions for welding power steel structures JB/T 5000.6 General technical conditions for heavy machinery Part 6.Steel castings JB/T 5000.12 General technical conditions for heavy machinery Part 12.Painting JB/T 6392 crane wheel NB/T 47013.1～47013.6 Non-destructive testing of pressure equipment

3 Type and basic parameters

3.1 Type expression method The type expression method of the ring cloth machine is as follows. 3.2 Structure 3.3 Basic parameters 3.3.1 The basic parameters of the ring cloth machine should be given priority to the values specified in Table 1. 3.3.2 The combination of the rated productivity of the ring cloth machine and the belt speed and bandwidth shall be given priority to the values specified in Table 2.

4 Technical requirements

4.1 General requirements 4.1.1 The technical requirements of the ring cloth machine shall meet the requirements of this standard, and shall be prepared in accordance with the drawings and technical documents approved by the prescribed procedures. The rated production capacity should meet the label requirements. 4.1.2 Outsourcing accessories should meet the corresponding product standards and have product inspection certificates. 4.1.3 The belt conveyor should meet the requirements of GB/T 10595, GB/T 14784, and GB/T 50431. 4.1.4 The rotating parts can rotate flexibly without jamming. The lubrication part is well sealed, and there is no grease leakage. Bearing temperature rise is not more than 40℃, bearing temperature does not exceed 80℃. 4.1.5 The sealing cover of the belt conveyor should be provided with an observation door. 4.2 Materials 4.2.1 The materials of the main structural parts and parts should be certified by the manufacturer. 4.2.2 The performance of carbon structural steel for steel structure should meet the requirements of GB/T 700; the performance of low-alloy structural steel should meet the requirements of GB/T 1591; The performance of high-quality carbon structural steel should meet the requirements of GB/T 699. 4.2.3 All important parts of the castings are not allowed to have sand holes and pores that affect the strength, and the total area of the sand holes and pores on the secondary parts is not allowed to exceed More than 5% of the defect area, the depth of the recess should not exceed 1/5 of the wall thickness at this place, and the defect on each casting should not exceed 3 places. 4.3 Welding 4.3.1 The welding rod, wire and flux should be compatible with the material to be welded, and the manufacturer's certificate of conformity should be provided. 4.3.2 The welding rod shall meet the requirements of GB/T 5117 or GB/T 5118. 4.3.3 The welding wire should meet the requirements of GB/T 10045 or GB/T 8110. 4.3.4 The weld must meet the requirements of GB/T 985.1 or GB/T 985.2. 4.3.5 Classification of welds of steel structures. a) Belt conveyor frame, drive frame, head and tail frame, walking trolley frame, support, base, pin tooth support of slewing support device, Components such as sealing truss shall be Type II welded components. b) The belt conveyor head, tail funnel, sealing cover, dust hopper and other parts should be three types of welded seam components. 4.3.6 The inspection items, inspection scope and standards to be implemented for various welds are shown in Table 3. 4.4 Steel structure 4.4.1 The steel plate and section steel punching and shearing parts should be deburred. 4.4.2 The size, shape and allowable deviation of the steel plate shall meet the requirements of GB/T 708 and GB/T 709. 4.4.3 The relative position deviation during welding and assembly of parts and components shall meet the requirements of 5.3 of DL/T 678-2013. 4.4.4 The selection and preparation of the weld groove, and the processing and cleaning of the groove shall comply with the regulations in 5.2 of DL/T 678-2013. 4.4.5 The limit deviation of the dimensions without tolerances of the machined dimensions shall meet the m-level regulations in GB/T 1804. 4.4.6 The linear dimensions and tolerances of straightness, flatness and parallelism of welded assemblies shall meet the requirements of GB/T 19804. 4.5 Main parts 4.5.1 Wheel 4.5.1.1 The wheel tread and the inner surface of the wheel flange shall be quenched by power frequency, the heat treatment hardness shall be 300HB～380HB, the depth shall not be less than 15mm, The hardness at 15mm is 260HB, and the uniform transition to the unquenched zone. 4.5.1.2 The quality inspection of wheels shall meet the requirements of JB/T 6392. 4.5.1.3 The castings should meet the requirements of JB/T 5000.6. 4.5.2 Walking wheel 4.5.2.1 The travel wheel material is QT600-3, which should meet the requirements of GB/T 1348. 4.5.2.2 The dimensional deviation of the diameter of the mating surface between the traveling wheel and the outer ring of the rolling bearing should be h6 accuracy in GB/T 1801. The coaxiality tolerance of the outer cylindrical surface of the running wheel should be level 8 accuracy in Appendix B of GB/T 1184-1996. 4.5.3 Guide wheel 4.5.3.1 The guide wheel material is QT600-3, which should meet the requirements of GB/T 1348. 4.5.3.2 The dimensional limit deviation of the diameter of the mating surface of the guide wheel and the outer ring of the sliding bearing should be h7 accuracy in GB/T 1801. The coaxiality tolerance with the outer cylindrical surface of the guide wheel should be level 9 accuracy in Appendix B of GB/T 1184-1996. 4.5.4 Gear and pin tooth support 4.5.4.1 Gear material is ZG340-640, quenched and tempered 217HB～255HB, tooth surface is medium frequency quenched, quenching depth 5mm, surface hardness 50HRC～60HRC. 4.5.4.2 Pin tooth material is 40Cr, quenched and tempered 225HB～260HB, surface quenched, quenching depth 2mm～4mm. Surface hardness 48HRC～ 52HRC. The diameter tolerance of the cylindrical pin should be h6 accuracy in GB/T 1801. 4.5.4.3 Tolerance fit of pin gear transmission should be selected according to Table 4. 4.5.4.4 The deviation of the center distance during installation is selected according to the deviation of the center distance of a general gear. 4.5.5 Heat treatment of shaft and pin The heat treatment hardness of the quenched and tempered shaft is not less than 217HB, and the heat treatment hardness of the special shaft and pin is not less than 40HRC. 4.5.6 Slewing bearing device 4.5.6.1 The flatness of the slewing support of the slewing bearing device should be the 10th grade accuracy in Appendix B of GB/T 1184-1996; the pin hole is coaxial The degree of accuracy should be Grade 10 in Appendix B of GB/T 1184-1996, and the parallelism between the axis of the pin hole and the lower plane of the central rotating bracket should be Level 9 accuracy in Appendix B of GB/T 1184-1996. 4.5.6.2 The distance deviation between the pin hole axis of the two upper revolving supports and the upper plane of the upper revolving supports shall not exceed 0.5mm. 4.6 Assembly 4.6.1 Basic requirements All parts should be inspected and qualified before assembly. 4.6.2 Wheel installation 4.6.2.1 The rim of the wheel should be located on the outside of the circular track. The vertical deviation of the wheel end facing the track plane Δa≤L/400 (L is the measured The distance, the inclination direction should be limited to the upper inclination). See Figure 2 for the vertical deviation of the wheels. Figure 2 The verticality deviation of the wheel 4.6.2.2 The tolerance level of the parallelism between the centerline of the two wheels and the centerline passing through the center of the track is level 10. 4.6.3 Track installation 4.6.3.1 During installation, the outer ring of the slewing bearing of the slewing bearing device should be used as the reference circle, and the track circle of the walking trolley should be drawn by the method of hanging lines. The allowable deviation of the coaxiality with the reference circle should not be greater than 5mm. 4.6.3.2 The allowable deviation of flatness of the plane on the track within any 1/8 of the range shall not be greater than 1mm; the radial error shall be within any 2m arc inner circle The allowable deviation of runout should not be greater than 2mm. 4.6.3.3 The height difference e at the track joint should not be greater than 0.5mm, the lateral misalignment g at the track joint should not be greater than 0.5mm, and the head at the track joint The gap c should not be greater than 2mm, see Figure 3. Figure 3 Allowable deviation at track joints 4.6.4 Installation of walking drive device The gear meshing clearance of the transmission device shall meet the following requirements. a) The backlash of gear and pin tooth meshing should be 1mm～1.5mm. b) The tooth root gap should be 2.5mm～3.5mm. c) The contact area between gear and pin tooth should not be less than 40% along the tooth height direction and should not be less than 50% along the tooth width direction. 4.6.5 Installation of inner and outer ring sealing device The coaxiality between the inner and outer ring sealing device and the reference circle of the slewing bearing device should not be greater than 5mm. 4.6.6 Belt conveyor installation The installation of the belt conveyor should meet the requirements of GB/T 10595. 4.7 Derusting and painting 4.7.1 Rust removal should meet the requirements of Sa2.5 or St3 level specified in GB/T 8923.1. 4.7.2 When the surface temperature of the steel is lower than 3℃ above the dew point, dry sandblasting should not be carried out to remove rust. 4.7.3 The paint color and color swatches of the external surface of the machine should meet the requirements of JB/T 5000.12, and the color is determined by the owner. 4.7.4 The paint film adhesion should comply with the level 2 specified in GB/T 9286. 4.7.5 The non-machined and exposed surfaces of each component shall be painted except for the following conditions. a) After welding, the inner surface of the structural part with a closed inside, the mating surface and the working surface of the processing. b) The surface of parts and non-ferrous metal parts made of plastic, rubber and other materials. c) The surface of the part with coating. 4.7.6 The surface that has been sprayed and derusted should be painted with primer in time. The painting should be carried out in a clean and clean place. The ambient temperature should be above 5°C. The humidity is below 85%, and the surface temperature of the workpiece should not exceed 60°C. 4.7.7 Each component should be coated with one layer of primer (excluding maintenance primer) and two layers of topcoat. No paint leakage is allowed. The color of each layer of paint should not be the same At the same time, the dry film thickness of each layer of paint should be 25μm～35μm, and the total thickness of the paint dry film should not be less than 75μm. 4.7.8 Protective grease should be applied to the exposed processing mating surface, and the exposed processing non-matching surface should be coated with topcoat or primer, with a dry film thickness of at least 35μ m. 4.7.9 After the whole machine is installed and debugged, the topcoat should be painted again, and the damaged parts during installation should be repaired before painting. 4.7.10 The coating of the primer and the intermediate layer paint is not allowed to have defects such as pinholes, bubbles, wrinkles, shedding, sagging, and paint leakage. The top paint should be uniform and complete. 4.7.11 When two steel structural parts are permanently connected by bolts, the dirt and oxides on the contact surface shall be thoroughly removed before assembly, and Apply a layer of red lead paint or paint when the paint is dry, and connect it tightly when the paint is wet. 4.7.12 Before leaving the factory, all exposed processing surfaces should be taken to prevent rust. Except for the anti-rust primer, which should be painted before leaving the factory, the last external The paint can be applied before leaving the factory or after going to the construction site. 4.8 Security 4.8.1 All electric control devices shall be grounded, and safety warning signs shall be provided with grounding signs. 4.8.2 Ladder, railing and platform shall comply with GB 4053. 4.8.3 The equipment safety shall comply with the provisions of GB 14784. 4.9 Working environment 4.9.1 The working area of the cloth machine should have sufficient illumination, and the lighting design should be implemented in accordance with GB 50034. 4.9.2 There should be a vacuum device between the working layers of the cloth machine to ensure that the concentration of harmful substances in the workplace meets the relevant requirements of GBZ 1 and GB 20426. Regulations. 4.10 Electrical equipment 4.10.1 General requirements 4.10.1.1 The electrical equipment shall comply with the provisions of GB 50055, shall be complete and free of defects, and shall hold a factory certificate. 4.10.1.2 All matching motor and electrical components factory test reports, instructions, and certificates shall be handed over to the user intact. 4.10.1.3 The purpose of the indicator button operation switch signal light should be marked on the panel, and the electrical components in the cabinet should be marked with their code. 4.10.2 Electrical equipment installation 4.10.2.1 Electrical equipment should be installed firmly. 4.10.2.2 The audio signal device should be reliable and should be located where the eyes and ears of the relevant personnel can reach. 4.10.2.3 The travel switch action should be correct and reliable, and the corresponding mechanism should stop moving when it reaches the limit position. 4.10.2.4 The distance between the electrical equipment screen cabinets and the structural frame (or slab wall) shall meet the requirements for convenient maintenance. 4.10.3 Wire laying 4.10.3.1 The conductors shall be insulated copper-core multi-strand wires or cables, and the cross-section of the conductors shall be determined according to the laying method, ambient temperature and voltage level. The motor power cord is not less than 2.5mm2, the control loop and auxiliary wiring are not less than 1.5mm2, and the wires that move with the equipment should be multi-strand copper core wires. 4.10.3.2 The internal connection wires of the screen box can be bare copper bus or insulated copper wires. 4.10.3.3 The control wire connecting the inverter and the control cabinet should be shielded wire. 4.10.4 Grounding 4.10.4.1 For all electrical installations, metal parts that may be charged due to insulation damage should be grounded. 4.10.4.2 There should be no less than two connections between the track of the placing machine and the grounding system. The electrical connection between the tracks must be reliable and the grounding The ground resistance should not be greater than 4Ω. 4.10.4.3 The grounding terminal of the inverter should be a grounding wire with a section of 3.5mm2 or more. 4.10.4.4 The industrial programmable controller should be grounded separately, the grounding point should be close to the controller, the cross-section of the grounding wire should be greater than 2mm2, the grounding resistance Should be less than 100Ω. 4.11 Overall performance 4.11.1 There should be no non-rotating rollers when the belt conveyor is running under load. 4.11.2 When the belt conveyor is running, the distance between the edge of the conveyor belt and the outer edge of the idler roller should be greater than 30mm. 4.11.3 There should be no abnormal vibration and oil leakage on the electric drum. 4.11.4 The tensioning device should be adjusted flexibly, and the conveyor belt should be gradually increased until the conveyor belt and the roller do not slip during operation. 4.11.5 The cleaner has good cleaning effect and stable performance. The contact between the scraper of the scraper cleaner and the conveyor belt should be even, and its adjustment stroke should be large Below 20mm, abnormal vibration should not occur when the belt conveyor is running. 4.11.6 The evenly arranged traveling wheels and horizontal positioning wheels in the inner and outer ring sealing devices should rotate flexibly. 4.11.7 The electromechanical protection device should be sensitive, accurate and reliable in action. 4.11.8 The whole machine should run smoothly without jamming, and the no-load noise value should not exceed 85dB(A).

5 Test method

5.1 Preparation before the test 5.1.1 Check whether the connecting bolts are loose. 5.1.2 All mechanisms that can be manually operated shall be subjected to the cranking test without jamming. 5.1.3 Check the oil supply of each lubrication point. 5.1.4 Check whether the safety protection device is reliable. 5.1.5 The items to be tested and the tools used are shown in Table 5. 5.2 No-load test The whole machine should be tested for no-load operation, and the running time shall not be less than 1h. Start the drive motor, if the hot start current is too large or the start time is too long It should be stopped for inspection immediately, and the test should be carried out after the failure is eliminated. The whole machine should run smoothly, without impact and abnormal noise. Reducer, electric The drum shall not leak oil; and shall meet the requirements of Article 4.11. 5.3 Load test The load test is carried out on site. All agencies should run smoothly and reliably, and run for at least 4 hours each time under starting, running, and stopping conditions. It can be put into production only after 72 hours of cumulative operation without abnormal phenomena.

6 Inspection rules

6.1 Factory inspection The factory inspection shall be carried out item by item according to the requirements of Chapter 4 of this standard. When measuring the length with steel tape measure, it shall be carried out according to the value specified in Table 6. Fix. When measuring, the steel tape should be calibrated according to the 50N tensile force standard ruler. The reading on the measured steel tape plus the correction value in Table 6 is the actual measurement. 6.2 Factory inspection Each ring cloth machine can be delivered only after passing the inspection. The delivery inspection items are shown in Table 7. 6.3.2 Type inspection items. Type inspection items are those specified in Chapter 4 and Table 7. 6.4 Sampling The prototype of the type inspection is a prototype of a new product trial production or a random sample from the production batch of the month (season) under inspection. If the test fails Qualified should be doubled spot check, if still unqualified, the type inspection is determined to be unqualified. 6.5 Judgment rules 6.5.1 The ex-factory inspection items shall be qualified according to the regulations in Table 7, and the index is 100% up to the requirements; 6.5.2 Type inspection items are qualified according to the provisions of Chapter 4 and Table 7.Only if 100% of the indicators meet the requirements. 7 Marking, packaging, transportation and storage 7.1 Logo 7.1.1 The mark of the ring cloth machine shall meet the requirements of GB/T 50549. 7.1.2 Fix the product label at the obvious position of the cloth machine. The label shall at least include the following contents. a) Product name; b) Model; c) Main technical parameters (productivity, bandwidth, belt speed); d) Date of manufacture (number); e) The name of the manufacturer. 7.1.2 The size and technical requirements of the signs should meet the requirements of GB/T 13306. 7.2 Packaging 7.2.1 The packaging of the parts of the fabric machine should meet the requirements of GB/T 13384, and the packaging, storage and transportation pictorial signs should meet the relevant requirements of GB/T 191. 7.2.2 When distributed packaging is shipped, the number and location of the connecting parts must be stated in the list of assembly and disassembly shipping units. Each unit should be There are marks that conform to the manufacturer's assembly and disassembly number drawing. 7.2.3 The random technical documents should be packaged in plastic bags and fixed in the packaging box, and should include. a) Installatio...

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