SYJ 4040-1989 Industrial Gas Turbine Installation, Construction and Acceptance SpecificationSYJ4040-1989 Standard download decompression password: www.bzxz.net

Petroleum Industry Standard of the People's Republic of China
Industrial Gas Turbine Installation, Construction and Acceptance Specification SYJ4040-89
Editor: Infrastructure Engineering Department of China National Petroleum Corporation Approving Department: Ministry of Energy of the People's Republic of China Implementation Date: October 1, 1990
Petroleum Industry Press
1990 Beijing
Chapter 1
Chapter 2
Section 1
Section Section 2
Section 3
Chapter 1
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Section 8
Section 9
Section 10
Overall Survey and Construction Preparation
General Provisions
Equipment Acceptance
About Tingzhu Engineering Requirements
Gas turbine body installation
General provisions
Chassis installation
Installation of cylinder, bearing seat and sliding pin system
Installation of bearings and oil seals
Inspection and installation of rotor and coupling
Installation of flow-through parts
Installation of turning device and reducer
Gas turbine cylinder assembly
Installation of combustion system
Secondary grouting of foundation||tt| |Section 1
Chapter 4
Section 1
Section 3
Chapter 5
Section 1
Section 2
Section 3
Section 4
Section 1
Section 3
Section 5
Section 6
Project Acceptance
Pipeline Installation
Pipeline Installation
Connection between pipeline and machine
Adjustment, startup and trial operation of gas turbine. General provisions
Test operation of auxiliary machinery
Test operation of lubricating oil system
Test operation of cooling water system
Test operation of fuel delivery system
CO, fire extinguishing protection system
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Section 7 Test and adjustment of control system before turbine start-upSection 8 Gas turbine emergency and air testSection 9 Gas turbine load test
Section 1 Project acceptance·
Appendix Installation without shims
Appendix 2.
Specifications of commonly used washers
Reference data on tightening torque and axial tension of anchor bolts Appendix III
Proportion of cylinder paint, proportion of sliding pin grease, and commonly used anti-seizure agent Appendix IV
Appendix V.
Corresponding relationship between wire diameter and weight of heavy hammer and data on wire deflection Appendix VI Meshing requirements for cylindrical and bevel gears Appendix VII Reference proportions of micro-expansive concrete and non-shrinkage cement mortar Appendix II Key points on the construction method of concentricity of couplings Appendix IX Recommended formulas for pickling, neutralization and passivation solutions for carbon steel and low alloy steel pipes Appendix X Reference formulas for alkaline cleaning solutions
Appendix X Recommended test equipment·
Appendix II Explanation of terms used in this specification
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Ministry of Energy Document
Energy Technology [1990] No. 556
Notice on the Release of Sixteen Industry Standards including "Standards for Quality Inspection and Assessment of Petroleum Engineering Construction" To all relevant units:
Sixteen engineering construction standards including "Standards for Quality Inspection and Assessment of Petroleum Engineering Construction" are now approved as petroleum industry standards. The numbers and names of the standards are as follows: Serial number
SYJ 4037-89
SYJ 4023-—89
SYJ 4040--89
SYJ 4041—89
4042-89
4043—89
4044—89
4045—90
SYJ 36-89
SYJ 37-89
SYJ 38—89
SYJ 39--89
13SY40-89
Petroleum engineering construction quality inspection and assessment standardManifold manufacturing and installation engineering construction and acceptance specificationIndustrial gas turbine installation construction and acceptance specificationOil field special condensing steam generator manufacturing, installation and acceptance specification
Steel pipeline powder coating technical standard
General medical steel welded oil tank penetration test technical standardNormal pressure steel welded oil tank magnetic particle test technical standardOil and gas separator manufacturing and installation engineering construction and acceptance specificationBuried steel pipeline forced current cathodic protection design specificationCathode peeling test method for pipeline anticorrosion layer
Test method for specific bendability of pipeline anticorrosion layerChemical stability test method for pipeline anticorrosion layerImpact resistance test method for pipeline anticorrosion layer (fall test)14. SYJ 41--89
51. SYJ 42--89
16. SYJ 43--89
Test method for shear strength of adhesion between pipeline anticorrosion coating and metal
Economic calculation method for anticorrosion engineering
Regulations on color coating of surface pipelines and equipment in oil and gas fields shall come into force on June 1, 1990. Ministry of Energy of the People's Republic of China
June 8, 1990
Preparation Instructions
This specification is compiled by the First Construction Company of China National Petroleum Corporation (formerly the First Engineering Company of the Ministry of Petroleum) and jointly compiled with the Engineering Technology Research Institute of China National Petroleum Corporation in accordance with the requirements of the notification of the former Ministry of Petroleum (88) Oil Science and Technology No. 2.
In the process of compiling this specification, the compilation team conducted extensive investigations and studies, combined with the actual situation of gas turbine installation and manufacturing in my country, and absorbed the recent introduction of the new technology. The advanced technology and construction experience in engineering construction were referred to the current relevant standards and specifications, and the opinions of relevant units were widely solicited. After repeated discussions and revisions, this specification was finally reviewed and approved by the Capital Construction Engineering Department of China National Petroleum Corporation in conjunction with relevant departments. This specification is divided into five chapters and thirteen appendices, with the main contents of general provisions, gas turbine body installation, pipeline installation, gas turbine adjustment, startup and trial operation, etc. In view of the fact that this specification is compiled for the first time, it is hoped that all units will seriously summarize experience in the implementation process in combination with engineering practice, pay attention to accumulating information, and actively provide improvement suggestions. Please send your opinions and relevant information to the Technical Development Department of the First Construction Company of China National Petroleum Corporation in Guanlin, Luoyang, Henan Province, and at the same time send it to the Standards Office of the Engineering Technology Research Institute of China National Petroleum Corporation in Guanjintang for future revision and supplement. The First Construction Company of China National Petroleum Corporation September 15, 1989
Chapter 1 General Provisions
Article 1.0, 1 This specification applies to the installation, construction and acceptance of gas turbine power units with duct combustion and horizontal joint surface structure. Other special structures and uses (such as aircraft modified gas turbine power units) can refer to the thermal specifications.
Article 1.0.2 The safety techniques, labor protection, environmental protection, fire prevention, etc. in the gas turbine installation project shall comply with the relevant national standards. Article 1.0.3 The construction of civil engineering, auxiliary equipment, process pipelines, insulation oil, chemical cleaning, electrical, instrumentation and hoisting and transportation in this specification shall be carried out in accordance with the current corresponding professional specifications.
Article 1.0.4 In addition to implementing this specification, the installation, construction and acceptance of gas turbines shall also comply with the requirements of the design drawings and product instructions. Chapter II Construction Preparation
Section 1 General Provisions
Article 2.1.1 The following technical data shall be available for gas turbine installation: 1. Delivery list and packing list of machines and equipment; 2. List of drawings and technical documents supplied with the machine; 3. Product factory certificate of conformity, including general assembly record, component assembly record, inspection and test record and unit trial operation record; 4. Product instruction manual (installation, operation and maintenance manual); 5. Manufacturing drawings (general assembly drawing, main component drawing, easy-to-photograph drawing); 6. Machine and equipment layout drawing, installation drawing, foundation drawing, system design drawing and instruction manual (process design part)
Article 2.1.2. The construction site should be arranged according to the provisions of the construction organization design and should meet the following requirements: 1. The ambient temperature at the construction site should be maintained above 5°C; when it is below 5°C, anti-cold and anti-smelting measures should be taken; 2. There should be sufficient water, electricity, lighting, compressed air, oxygen and acetylene gas facilities.
Article 2.1, 3 Lifting and transportation of gas turbine equipment and the use and management of machinery and equipment. The provisions of the "Regulations on the Management of Lifting Machinery Installation" issued by the former Ministry of Labor should be observed. Article 2.1.4 The following provisions shall be observed during the installation of gas turbines: 1. Unless the manufacturer clearly stipulates that disassembly is not necessary, the machine shall be disassembled for inspection and measurement; 2. Disassembly and assembly shall be carried out according to the manufacturer's drawings using special tools; 3. Disassembled parts shall be properly kept and shall not be mixed up or lost. 2
Article 2.1, 5 During the installation and construction of the gas turbine, its interior should be inspected. After stopping work, it should be closed in time. Section 2 Equipment Acceptance
Article 2.2, 1 After the equipment arrives at the site, unpacking appearance inspection and quantity count shall be carried out together with relevant personnel according to the packing list and relevant technical information. When in doubt about the equipment, a quality inspection should be carried out. Quality inspection should be carried out according to the inspection plan. Case 2.2.2 If any damage or quality defects are found during equipment inspection, timely consultation with relevant units should be carried out to determine the treatment plan. Article 2.2.3 Fasteners in equipment made of alloy steel and required to be assembled on site shall be subjected to spectral analysis and hardness test before construction to identify their material and confirm whether they are consistent with the design.
Section 2 Requirements for Construction Projects
Article 2.31 Before installing the gas turbine, coordination with the relevant foundation construction units is required. The dimensions of the foundation construction drawings should be checked. If any discrepancy is found between the equipment installation construction drawing and the actual size of the equipment, it should be handled through consultation with the relevant units. Article 2. Before installing the gas turbine, the foundation must be inspected and accepted. 1. The foundation construction unit should submit construction technical data such as quality certificate, measurement and acceptance record, settlement observation record, etc.: The elevation reference line, vertical and horizontal center lines should be clearly drawn on the foundation, and the coordinate axis should be marked on the corresponding buildings (structures); there should be settlement observation leveling points on the foundation.
Second, when the foundation is handed over for acceptance, the size and position of the foundation should be reviewed, and its quality should meet the requirements of Table 2.3,2.
Quality requirements for foundation dimensions and position
Elevation of different planes of foundation
2 Foundation position (vertical and horizontal axis)
Allowable deviation
3 Dimensions of the upper plane of foundation
Dimensions of the platform
Dimensions of the hole
Horizontal degree of the plane on the foundation
Vertical degree of the foundation
Surface horizontality of the embedded installation pad (per meter) Embedded installation pad Plain elevation
Embedded anchor bolts
Embedded anchor bolt holes
Preliminary elevation
Center distance (at the top and root)Diagonal length
Center position
Plumbness of hole
Distance between center lines of each foundation
Continued Table 2.3,2
Allowable deviation
Article 2.3.3 The installation workshop should be closed, rainproof and able to block wind and sand. The bridge crane construction is completed and accepted.
Chapter 3 Gas Turbine Body Installation
Section 1 General Provisions
Article 3,1,1 Before the gas turbine is in place, the foundation should be treated as follows: 1. The foundation surface should be trimmed. The foundation surface should be chiseled to remove the floating slurry layer and shoveled into a rough surface: the number of rough surfaces is 5 to 10 points/m, and the depth of each point is generally not less than 10mm. The foundation surface with flat washers directly placed should be shoveled flat. The contact area between the shim and the foundation should be greater than 75% and evenly distributed. The surface levelness of the shim should not be greater than 0.20mm per meter. Third, the anchor screws should be cleaned after inspection. Article 312 When foundation observation is required, the observation shall be carried out at the following times: 1. After the foundation maintenance period expires (the measured value this time is used as the original data); 2. Before the unit is installed; 3. After the tree is installed and concrete is poured; 4. After 24 hours of trial operation.
Article 1. Equipment installation shall not be carried out when uneven foundation depression causes obvious changes in the alignment and leveling work of the gas turbine and the lug measurement. Section 2 Chassis Installation
Article 3, 2, 1 The gas turbine chassis can be installed with shims or without shims. For installation method without shims, please refer to Appendix 1 of this specification. Article 32.2 When installing the chassis, the following preparations should be made: 1. The area where the adjustment shims (or small jacks) are placed should be flat, and the levelness and surface elevation of the embedded flat shims should be checked. The levelness should not be greater than 0.05m per meter, and the surface elevation should be allowed to have a deviation of ±0.25mm. 2. If the chassis has a top screw structure, a concave wing should be shoveled out at the corresponding part of the handle, and the shims should be pre-installed using the pad installation method.
3. The installation shims and the embedded flat shims of the foundation should be used and scraped in pairs, and the contact area should be not less than 80%.
Article 32.3 The inspection and installation of the chassis should comply with the following List of requirements! 1. The sliding surface of the chassis should meet the requirements of the drawings. The parts combined with the secondary poured concrete should be clean, free of paint and dirt. 2. The clearance of each slide lock on the chassis should meet the requirements of the drawings. 3. The center distance of the chassis anchor screw holes should meet the requirements of the drawings, and the center distance deviation should not be greater than 2mm
The matching planes of the chassis and the housing seats at each point should be smooth and have close contact. The contact area should be greater than 75% and evenly distributed. When checking the outside, use a 0.05mm ruler. It cannot be inserted at the four corners.
Article 3.2.4 The installation of the shim shall meet the following requirements: 1. The shim The layout shall comply with the provisions of the equipment technical documents; if there are no provisions, the layout shall refer to the following principles:
1. Load concentration:
2 Main reinforcement and longitudinal centerline of the fuselage:
Two corners near the anchor bolts, four corners of the chassis 3
The spacing between two adjacent groups of shims is generally 300~500mm4,
5. The static load of the whole iron should not exceed 300mm.
2. The shim should be flat, without oxide scale, burr and curling. The total height should be 45~50mm. The number of layers should not exceed four, and the contact area of ​​each matching plane should not be less than 75% (coloring Check). The joint surfaces of each layer of shims and the shims and chassis should be tight. Check with a 0.05mm feeler gauge. The insertion depth should not exceed 1/4 of the length of the shim side. Use a 0.3-0.5kg hammer to hit any corner of each group of shims. There should be no looseness. After the inclined shims are installed, they should be welded on the surface. When all flat shims are used for installation, the shims can be installed without welding.
: 3. For the specifications of shims, please refer to the provisions of Appendix 2 of this specification. Article 3.2.5 The installation of anchor bolts shall meet the following requirements: 1. There should be clearance around the anchor bolts in the chassis bolt holes or the reserved holes in the foundation and 6Article 31 Before installing the gas turbine, it shall cooperate with the relevant foundation construction units. The dimensions of the foundation construction drawings shall be checked. If it is found that it is inconsistent with the equipment installation construction drawings and the actual dimensions of the equipment, it shall be handled through consultation with the relevant units. Article 2, 2 Before installing the gas turbine, the foundation must be handed over and accepted. The foundation construction unit shall submit construction technical data such as quality certificates, measurement acceptance records, and settlement observation records: the elevation reference line, vertical and horizontal center lines shall be clearly drawn on the foundation, and the coordinate axes shall be marked on the corresponding buildings (structures): there shall be settlement observation leveling points on the foundation.
Second, when the foundation is handed over and accepted, the size and position of the foundation shall be reviewed, and its quality shall meet the requirements of Table 2.3,2.
Quality requirements for foundation dimensions and position
Elevation of different planes of foundation
2 Foundation position (vertical and horizontal axis)
Allowable deviation
3 Dimensions of the upper plane of foundation
Dimensions of the platform
Dimensions of the hole
Horizontal degree of the plane on the foundation
Vertical degree of the foundation
Surface horizontality of the embedded installation pad (per meter) Embedded installation pad Plain elevation
Embedded anchor bolts
Embedded anchor bolt holes
Preliminary elevation
Center distance (at the top and the root) Diagonal length
Center position
Plumbness of the hole
Dimensions of the center line distance of each foundation
Continued Table 2.3,2
Allowable deviation
Article 2.3.3 The installation plant should be closed, rainproof, and able to shield wind and sand. The bridge crane construction is completed and the ear is qualified.
Chapter III Gas Turbine Body Installation
Section 1 General Provisions
Article 3,1,1 Before the gas turbine is in place, the foundation should be treated as follows: 1. The foundation surface should be trimmed. The surface of the foundation should be chiseled to remove the floating slurry layer and shoveled into a rough surface: the number of rough surfaces is 5 to 10 points/m, and the depth of each point is generally not less than 10mm. 2. The surface of the foundation where the flat pad is directly placed should be shoveled flat. The contact area between the pad and the foundation should be greater than 75%, and the pad surface level should be evenly distributed. The horizontality of the pad surface should not be greater than 0.20mm per meter. 3. The anchor bolts should be cleaned. Article 312 When the foundation needs to be observed for pitting, the observation shall be carried out at the following times: 1. After the foundation maintenance period expires (the measured value is used as the original data). 2. Before the installation of the unit: 3. After the installation of the tree is completed, the concrete is poured. 4. After 24 hours of trial operation. 1. When the uneven foundation pitting causes obvious changes in the measurement of the alignment and leveling work of the gas turbine, the equipment shall not be installed. Section 2 Chassis Installation
Article 3.2.1 The gas turbine chassis can be installed with shims or without shims. For the installation method without shims, please refer to Appendix 1 of this specification. Article 32.2 When installing the chassis, the following preparations should be made: 1. The area where the adjustment shims (or small jacks) are placed should be flat, and the levelness and surface elevation of the embedded flat shims should be checked. The levelness should not be greater than 0.05m per meter, and the surface elevation should have an allowable deviation of ±0.25mm. 2. If the chassis has a top screw structure, a concave wing should be shoveled out at the corresponding part of the chassis, and the shims should be pre-prepared using the shim installation method.
3. The installation shims and the embedded flat shims of the foundation should be used and scraped in pairs, and the contact area should be not less than 80%.
Article 32.3 The inspection and installation of the chassis shall comply with the following List of requirements! 1. The sliding surface of the chassis should meet the requirements of the drawings. The parts combined with the secondary poured concrete should be clean, free of paint and dirt. 2. The clearance of each slide lock on the chassis should meet the requirements of the drawings. 3. The center distance of the chassis anchor screw holes should meet the requirements of the drawings, and the center distance deviation should not be greater than 2mm
The matching planes of the chassis and the housing seats at each point should be smooth and have close contact. The contact area should be greater than 75% and evenly distributed. When checking the outside, use a 0.05mm ruler. It cannot be inserted at the four corners.
Article 3.2.4 The installation of the shim shall meet the following requirements: 1. The shim The layout shall comply with the provisions of the equipment technical documents; if there are no provisions, the layout shall refer to the following principles:
1. Load concentration:
2 Main reinforcement and longitudinal centerline of the fuselage:
Two corners near the anchor bolts, four corners of the chassis 3
The spacing between two adjacent groups of shims is generally 300~500mm4,
5. The static load of the whole iron should not exceed 300mm.
2. The shim should be flat, without oxide scale, burr and curling. The total height should be 45~50mm. The number of layers should not exceed four, and the contact area of ​​each matching plane should not be less than 75% (coloring Check). The joint surfaces of each layer of shims and the shims and chassis should be tight. Check with a 0.05mm feeler gauge. The insertion depth should not exceed 1/4 of the length of the shim side. Use a 0.3-0.5kg hammer to hit any corner of each group of shims. There should be no looseness. After the inclined shims are installed, they should be welded on the surface. When all flat shims are used for installation, the shims can be installed without welding.
: 3. For the specifications of shims, please refer to the provisions of Appendix 2 of this specification. Article 3.2.5 The installation of anchor bolts shall meet the following requirements: 1. There should be clearance around the anchor bolts in the chassis bolt holes or the reserved holes in the foundation and 6Article 31 Before installing the gas turbine, it shall cooperate with the relevant foundation construction units. The dimensions of the foundation construction drawings shall be checked. If it is found that it is inconsistent with the equipment installation construction drawings and the actual dimensions of the equipment, it shall be handled through consultation with the relevant units. Article 2, 2 Before installing the gas turbine, the foundation must be handed over and accepted. The foundation construction unit shall submit construction technical data such as quality certificates, measurement acceptance records, and settlement observation records: the elevation reference line, vertical and horizontal center lines shall be clearly drawn on the foundation, and the coordinate axes shall be marked on the corresponding buildings (structures): there shall be settlement observation leveling points on the foundation.
Second, when the foundation is handed over and accepted, the size and position of the foundation shall be reviewed, and its quality shall meet the requirements of Table 2.3,2.
Quality requirements for foundation dimensions and position
Elevation of different planes of foundation
2 Foundation position (vertical and horizontal axis)
Allowable deviation
3 Dimensions of the upper plane of foundation
Dimensions of the platform
Dimensions of the hole
Horizontal degree of the plane on the foundation
Vertical degree of the foundation
Surface horizontality of the embedded installation pad (per meter) Embedded installation pad Plain elevation
Embedded anchor bolts
Embedded anchor bolt holes
Preliminary elevation
Center distance (at the top and the root) Diagonal length
Center position
Plumbness of the hole
Dimensions of the center line distance of each foundation
Continued Table 2.3,2
Allowable deviation
Article 2.3.3 The installation plant should be closed, rainproof, and able to shield wind and sand. The bridge crane construction is completed and the ear is qualified.
Chapter III Gas Turbine Body Installation
Section 1 General Provisions
Article 3,1,1 Before the gas turbine is in place, the foundation should be treated as follows: 1. The foundation surface should be trimmed. The surface of the foundation should be chiseled to remove the floating slurry layer and shoveled into a rough surface: the number of rough surfaces is 5 to 10 points/m, and the depth of each point is generally not less than 10mm. 2. The surface of the foundation where the flat pad is directly placed should be shoveled flat. The contact area between the pad and the foundation should be greater than 75%, and the pad surface level should be evenly distributed. The horizontality of the pad surface should not be greater than 0.20mm per meter. 3. The anchor bolts should be cleaned. Article 312 When the foundation needs to be observed for pitting, the observation shall be carried out at the following times: 1. After the foundation maintenance period expires (the measured value is used as the original data). 2. Before the installation of the unit: 3. After the installation of the tree is completed, the concrete is poured. 4. After 24 hours of trial operation. 1. When the uneven foundation pitting causes obvious changes in the measurement of the alignment and leveling work of the gas turbine, the equipment shall not be installed. Section 2 Chassis Installation
Article 3.2.1 The gas turbine chassis can be installed with shims or without shims. For the installation method without shims, please refer to Appendix 1 of this specification. Article 32.2 When installing the chassis, the following preparations should be made: 1. The area where the adjustment shims (or small jacks) are placed should be flat, and the levelness and surface elevation of the embedded flat shims should be checked. The levelness should not be greater than 0.05m per meter, and the surface elevation should have an allowable deviation of ±0.25mm. 2. If the chassis has a top screw structure, a concave wing should be shoveled out at the corresponding part of the chassis, and the shims should be pre-prepared using the shim installation method.
3. The installation shims and the embedded flat shims of the foundation should be used and scraped in pairs, and the contact area should be not less than 80%.
Article 32.3 The inspection and installation of the chassis shall comply with the following List of requirements! 1. The sliding surface of the chassis should meet the requirements of the drawings. The parts combined with the secondary poured concrete should be clean, free of paint and dirt. 2. The clearance of each slide lock on the chassis should meet the requirements of the drawings. 3. The center distance of the chassis anchor screw holes should meet the requirements of the drawings, and the center distance deviation should not be greater than 2mm
The matching planes of the chassis and the housing seats at each point should be smooth and have close contact. The contact area should be greater than 75% and evenly distributed. When checking the outside, use a 0.05mm ruler. It cannot be inserted at the four corners.
Article 3.2.4 The installation of the shim shall meet the following requirements: 1. The shim The layout shall comply with the provisions of the equipment technical documents; if there are no provisions, the layout shall refer to the following principles:
1. Load concentration:
2 Main reinforcement and longitudinal centerline of the fuselage:
Two corners near the anchor bolts, four corners of the chassis 3
The spacing between two adjacent groups of shims is generally 300~500mm4,
5. The static load of the whole iron should not exceed 300mm.
2. The shim should be flat, without oxide scale, burr and curling. The total height should be 45~50mm. The number of layers should not exceed four, and the contact area of ​​each matching plane should not be less than 75% (coloring Check). The joint surfaces of each layer of shims and the shims and chassis should be tight. Check with a 0.05mm feeler gauge. The insertion depth should not exceed 1/4 of the length of the shim side. Use a 0.3-0.5kg hammer to hit any corner of each group of shims. There should be no looseness. After the inclined shims are installed, they should be welded on the surface. When all flat shims are used for installation, the shims can be installed without welding.
: 3. For the specifications of shims, please refer to the provisions of Appendix 2 of this specification. Article 3.2.5 The installation of anchor bolts shall meet the following requirements: 1. There should be clearance around the anchor bolts in the chassis bolt holes or the reserved holes in the foundation and 64. The installation of shims shall meet the following requirements: 1. The layout of shims shall meet the requirements of the equipment technical documents; if there are no requirements, the layout shall refer to the following principles:
1. Load concentration:
2. The main reinforcement and longitudinal centerline of the fuselage:
The two sides close to the anchor bolts, the four corners of the chassis 3. The spacing between two adjacent groups of shims is generally 300~500mm4.
5. The static load of the whole iron should not exceed 300mm.
2. The shims should be flat, without oxide scale, burr curling, etc. The total height should be 45~50mm. The number of layers should not exceed four, and the contact area of ​​each matching plane should not be less than 75% (color inspection). The joint surfaces of each layer of shims and the shims and chassis should be tight. Check with a 0.05mm feeler gauge. The insertion depth should not exceed 1/4 of the side length of the shim. Use a 0.3-0.5kg hammer to hit any corner of each group of shims. There should be no looseness. After the inclined shims are installed, they should be welded on the surface. When all flat shims are used for installation, the shims do not need to be welded after installation.
: 3. For shim specifications, please refer to the provisions of Appendix 2 of this specification. Article 3.2.5 The installation of anchor bolts shall meet the following requirements: 1. There should be clearance around the anchor bolts in the chassis bolt holes or the reserved holes in the foundation and 64. The installation of shims shall meet the following requirements: 1. The layout of shims shall meet the requirements of the equipment technical documents; if there are no requirements, the layout shall refer to the following principles:
1. Load concentration:
2. The main reinforcement and longitudinal centerline of the fuselage:
The two sides close to the anchor bolts, the four corners of the chassis 3. The spacing between two adjacent groups of shims is generally 300~500mm4.
5. The static load of the whole iron should not exceed 300mm.
2. The shims should be flat, without oxide scale, burr curling, etc. The total height should be 45~50mm. The number of layers should not exceed four, and the contact area of ​​each matching plane should not be less than 75% (color inspection). The joint surfaces of each layer of shims and the shims and chassis should be tight. Check with a 0.05mm feeler gauge. The insertion depth should not exceed 1/4 of the side length of the shim. Use a 0.3-0.5kg hammer to hit any corner of each group of shims. There should be no looseness. After the inclined shims are installed, they should be welded on the surface. When all flat shims are used for installation, the shims do not need to be welded after installation.
: 3. For shim specifications, please refer to the provisions of Appendix 2 of this specification. Article 3.2.5 The installation of anchor bolts shall meet the following requirements: 1. There should be clearance around the anchor bolts in the chassis bolt holes or the reserved holes in the foundation and 6
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