HG/T 2268-1992 Technical requirements for steel mechanical stirring vessels
Some standard content:
Chemical Industry Standard of the People's Republic of China
HG/T 2268—92
Technical Conditions for Steel Mechanical Mixing Vessels
1992-01-08 Issued
Ministry of Chemical Industry of the People's Republic of China
1992-07-01 Implementation
Chemical Industry Standard of the People's Republic of China
Technical Conditions for Steel Mechanical Mixing Vessels
Subject Content and Scope of Application
HG/ T 2268 —92
This standard specifies the requirements for the manufacture, inspection, acceptance, packaging, storage and transportation of vertical cylindrical steel mechanical stirring vessels (referred to as stirring vessels).
This standard is applicable to stirring vessels for various physical and chemical processes with liquid media having a nominal volume of 0.04~100m3, a design pressure of -0.1~12MPa (gauge pressure), a temperature of -40~350℃, a dynamic viscosity of not more than 500Pa.5, and a density of not more than 2000kg/m3. This standard does not apply to the following mixing vessels: Mixing vessels heated by direct flames; Mixing vessels exposed to nuclear radiation; Mixing vessels requiring fatigue analysis; Mixing vessels that are frequently moved; Glass mixing vessels. 2 Reference standards GB-150 Steel pressure vessels GB1184 Shape and position tolerances Provisions for unmarked tolerances GB4323 Elastic sleeve pin couplings GB5843 Flange couplings GB9845 Types and main parameters of steel mechanical mixing vessels HG 5-213 Vertical clamp coupling
HG/T2124 Technical conditions for paddle agitators
HG/T2125 Technical parts for turbine agitatorsHG/T2126 Technical conditions for propeller agitatorsHG/T2127 Technical conditions for frame agitators
HG/T2269 Technical conditions for mechanical seals for useHGJ2290 Construction and acceptance specifications for anti-corrosion projects for chemical equipment and pipelinesJB2536 Painting, packaging and transportation of pressure vesselsJB2880
Technical conditions for steel welded atmospheric pressure vessels
3 The type and main parameters of mixing vessels
shall comply with the provisions of GB 9845.
4 Materials
4.1 The materials of the main components of the mixing vessel shall have a quality certificate issued by the material manufacturer. 4.2 The materials of vacuum and pressure mixing vessels shall comply with the provisions of GB150. Approved by the Ministry of Chemical Industry of the People's Republic of China on January 8, 1992 and implemented on July 1, 1992
HG/T2268-92
4.3 The materials of atmospheric pressure mixing vessels shall comply with the provisions of JB2880. 4.4 The materials of the mixing shaft and shaft seal shall comply with the corresponding standards. 5 Manufacturing, inspection and acceptance
5.1 In addition to complying with this standard, the manufacturing, inspection and acceptance of mixing vessels shall also comply with the provisions of the drawings. 5.2 The manufacturing, inspection and acceptance of vacuum and pressure mixing vessels shall comply with the provisions of GB150.
5.3 The manufacturing, inspection and acceptance of atmospheric pressure vessels shall comply with the provisions of JB2880.
5.4 For the environment mixing container with coating or lining, in addition to complying with this standard, it shall also comply with HGJ2290 and corresponding technical specifications. 5.5 The circumferential weld between the pressure jacket and the cylinder shall be subjected to 100% non-destructive testing.
5.6 Assembly requirements for the reducer base flange and the shaft seal base flange 5.6.1 The coaxiality tolerance of the axes of the two flanges shall not be greater than 1% of the nominal diameter of the head. 5.6.2 The reducer base joint surface on the flange and the tight surface of the shaft seal bottom shall be perpendicular to the axis of the container. , its verticality tolerance shall not exceed 1% of the flange outer diameter.
5.6.3 When the reducer base flange and the shaft seal base flange are separately assembled, the coaxiality tolerance of the two flanges shall not exceed 0.3mm, and the two flanges shall be welded with the head and then the joint surface and the tight surface shall be finely machined. 5.7 Stirring device
5.7.1 Stirring shaft
5.7.1.1 The straightness tolerance of the shaft shall comply with the provisions of Table 1, Table
Speed.r/min
100～1 000
≥>1 0001 500
>1 500 ~ 3 000
Straightness tolerance per meter of shaft length, mm
5.7.1.2 Shaft surface treatment at packing seal: When the shaft material is 35, 40, 45 steel and 40Cr steel, the seal needs to be tempered. Carbon steel hardness HB=190～255, chrome steel hardness HB=240～290: When the shaft material is stainless acid-resistant steel, it is advisable to use hard chrome plating and other hardening treatments.
5.7.1.3 The coaxiality tolerance of the shaft neck of the agitator, shaft seal, bearing and coupling assembled on the shaft shall comply with the 8th grade accuracy of GB1184.
5.7.1.4 When the agitator shaft or intermediate shaft is connected to the output shaft of the reducer by a rigid coupling, the coaxiality tolerance shall not exceed 0.05%. 5.7.2 Agitator
5.7.2.1 The manufacture and inspection of turbine agitators shall comply with the provisions of HG/T2125. 5.7.2.2 The manufacture and inspection of paddle agitators shall comply with the provisions of HG/T2124. 5.7.2.3 The manufacture and inspection of propeller agitators shall comply with the provisions of HG/T2126. 2
HG/T 2268-92
5.7.2.4 The manufacture and inspection of frame agitators shall comply with the provisions of HG/T2127. 5.7.2.5 The manufacture and inspection of other types of agitators shall comply with the requirements of the drawings or relevant technical conditions. 5.7.3 Couplings
5.7.3.1 Vertical clamp couplings shall comply with the requirements of HG5-213. 5.7.3.2 Flange couplings shall comply with the requirements of GB5843. 5.7.3.3 Elastic sleeve pin couplings shall comply with the requirements of GB4323. 5.7.4 Shaft sealing devices
5.7.4.1 Mechanical seals The seal shall comply with the provisions of HG/T2269. 5.7.4.2 The manufacture of the stuffing box shall comply with the provisions of the drawings or relevant standards: 5.7.3 After the stirring device is assembled, the direction of rotation of the stirring shaft shall be clearly marked. The following indicators shall be controlled for the turning. 5.7.5.1 The radial runout tolerance of the top shaft of the shaft seal shall comply with the provisions of Table 2. Table 2
Design pressure
0.35~0.70
>0. 70~ 1. 40
>1. 40 ~ 7
The radial runout tolerance of mechanical seal should be less than 0.08.Ⅱ Radial runout tolerance
5.7.5.2 The axial runout disk of the shaft at the mechanical seal is mainly 0.2mm; the bellows type is ±0.4mm, 5.7.5.3 The radial swing disk at the free end of the shaft cantilever shall not be greater than the value calculated by the following formula. #=0.0025Ln-Number
Where: 8--Radial swing plate, mm;
L--Cantilever length of shaft, mm;
Working speed of agitator, r/min,
5.8-Accessories
All kinds of accessories installed on the mixing vessel, such as motor, reducer (including machine base), pressure gauge, thermometer, safety valve (or bursting disc), discharge valve and other valves, shall comply with the requirements of drawings and relevant standards and specifications, and have the manufacturer's inspection certificate or quality certificate,
5.9 Pressure test and tightness test of mixing vessel5.9.1, Pressure test and tightness test of vacuum and pressure mixing vessel shall be in accordance with the provisions of GB150. 5.9.2 Pressure test and tightness test of Changyu mixing vessel shall be in accordance with the provisions of JB28805.9.3 When the mixing vessel is pressure tested, the shaft seal shall be sealed with a blind plate, and the shaft seal device shall not be pressure tested together with the vessel. 5.10 Operation test
5.10.1 The commissioning operation test of the mixing vessel shall be carried out after the pressure test, tightness test and comprehensive inspection (including the electrical parts) of the vessel have passed.
5.10.2 During the commissioning operation test, the test material and filling height in the container shall be as specified in the drawings. If there is no specification in the drawings, water HG / T 2268 92
can be used as a substitute for the material for the test. The material filling height is 80-85% of the height of the cylinder.5.10.3 For a vacuum mixing vessel, it shall be operated for 30 min with material under no pressure. If there is no abnormality, the container shall be pressurized to 0.1 MPa for continuous operation for not less than 4 h
5.10.4 For a normal pressure mixing vessel, it shall be operated for 30 min with material under no pressure. If there is no abnormality, it shall be continuously operated for not less than 2 h at the design pressure.
5.10.5 For a design pressure less than 1.6MPa pressure stirring vessel should be operated with material for 30min under no pressure state. If there is no abnormality, start to increase pressure slowly, with the pressure increase rate not exceeding 0.2MPa per minute, to 85% of the design pressure, and operate for 1-2h. If there is no abnormality, continue to increase pressure to the design pressure, and operate continuously for not less than 85. 5.10.6 Pressure stirring vessel with design pressure of 1.6-12MPa should be operated with material for 30min under no pressure state. If there is no abnormality, start to increase pressure slowly, with the pressure increase rate not exceeding 0.3MPa per minute, to 50% of the design pressure, and operate continuously for not less than 1h. If the operation is normal, pressurize to 85% of the design pressure, and operate for another 1-2h. If there is no abnormality, continue to increase pressure to the design pressure, and operate continuously for not less than 16h.
When the continuous operation test of the selected container is carried out, it should be inspected item by item according to Table 3. The accuracy of the inspection instrument should not be lower than Class 2.5. 5. 10.7
Operation inspection items
Measurement of current and voltage
Measurement of speed
Measurement of noise
Measurement of temperaturebzxz.net
Measurement of shaft leakage
Measurement of power drop
Measurement position and method
Direct reading of ampere and voltmeter
Direct connection of motor
Reducer
Reduction ratio calculated by tachometer
Not exceeding the motor setting
Nominal speed ±5%
Measure with a noise meter 1 meter away from the mixing vessel shell! No more than 85dB (A) and no obvious vibration and impact. Motor surface
Reducer surface
Bearing box surface
Shaft seal head Shaft surface
Single end face
Mechanical seal
Double end face
Stuffing box
Fluid collection method
Direct reading of pressure gauge
Direct reading of thermometer
Collection of isolation fluid
No more than ambient temperature plus 45℃, and the maximum temperature shall not exceed 80℃ No more than ambient temperature plus 40℃, and the maximum temperature shall not exceed 75℃ No more than ambient temperature 35, and the maximum temperature shall not exceed 70℃ No obvious bubbles are qualified
When the shaft diameter is greater than B0 mm, it is not greater than 10mL/h
When the shaft diameter is not greater than 80 mm, No more than 100L/h. When the sealed medium is organic, flammable or inflammable gas, the leakage volume shall be in accordance with relevant safety regulations. When the shaft diameter is greater than 80 mm, it shall not be greater than 30 mL/h. When the shaft diameter is not greater than 80m, it shall not be greater than -25mL/h. It shall not exceed 1.5% of the design pressure. 5.10.8 After the running test is passed, the pressure shall be slowly reduced, and the test material shall be discharged and dried with compressed air. 6 Marking, packaging, storage and transportation 6.1. Technical documents for mixing containers 6 1.1 Product certificate HG/T 2268 —92
6.1.2Installation and operation instructions, the main contents include: design pressure, working pressure, test pressure, design temperature, working temperature (inside the container, jacket, coil or discharge pipe), working medium, nominal volume, container type, agitator speed, motor and reducer model specifications, power, sealing form and sealing material model specifications, hoisting position and method. 6.1.3General drawing of the mixing vessel (engineering drawing) and easy-to-photograph drawings. 6. 1.4
List of main parts of the mixing vessel (including packing list), other special technical data of the mixing vessel, 6.1.5
The quality certificate should include the following contents:
Chemical composition and mechanical properties of the main parts materials. Results of nondestructive testing of main parts and components,
Welding volume of main welds (including repair records of more than two times) and inspection results of main geometric dimensions after forming, heat treatment records, pressure test, tightness test, trial run test results, pressure vessel manufacturing license number of the manufacturer and product inspection certificate of the labor inspection department e.
6.2 Nameplate
The nameplate should be fixed in an obvious and not easily damaged position: the nameplate content includes: container name, model specification, design pressure: design temperature, nominal volume, container type, motor power, stirring shaft speed, overall dimensions, total container volume, factory number, manufacturing date, manufacturer name, inspection seal,
|6.3 Painting, packaging, storage and transportation
6.3.1 The painting, packaging and transportation of mixing vessels shall comply with the provisions of JB2536.6.3.2 The shaft packaging cover, motor, reducer, etc. shall be packaged in moisture-proof, dust-proof and sun-proof packaging. 6.3.3 The outer dimensions of the mixing vessel packaged and transported as a whole machine shall comply with the relevant regulations of the transportation department, and the mixing device shall be loaded and fixed without damaging its performance. If the mixing device is packaged and transported in parts, the mixing shaft shall be prevented from bending and deformation, and the support for fixing the mixing shaft shall not be supported on the assembly part of the shaft.
6.3.4 The mixing vessel shall not be placed in the open air during storage. Additional instructions:
This standard is proposed by the Ministry of Chemical Industry.
This standard is under the jurisdiction of the Chemical Machinery and Equipment Standardization Technical Unit of the Ministry of Chemical Industry (Chemical Machinery Research Institute of the Ministry of Chemical Industry). This standard was drafted by Kaiping Machinery Factory of Guangdong Petrochemical Special Equipment Company, and Shanghai Chemical Engineering Design Institute and Zhejiang University participated in the drafting.
The main drafters of this standard are Zhang Qing, Wu Shaowei, and Shen Liangkang2 Installation and operation manual, the main contents include: design pressure, working pressure, test pressure, design temperature, working temperature (inside the container, jacket, coil or discharge pipe), working medium, nominal volume, container type, agitator speed, motor and reducer model specifications, power, sealing form and sealing material model specifications, lifting position and method. 6.1.3 General drawing of the mixing vessel (engineering drawing) and easy-to-photograph drawings. 6. 1.4
List of main parts of the mixing vessel (including packing list), other special instructions and technical data of the mixing vessel, 6.1.5
The quality certificate should include the following contents:
Chemical composition and mechanical properties of the main parts and materials. Results of nondestructive testing of main parts and components,
Welding volume of main welds (including repair records of more than two times) and inspection results of main geometric dimensions after forming, heat treatment records, pressure test, tightness test, trial run test results, pressure vessel manufacturing license number of the manufacturer and product inspection certificate of the labor inspection department e.
6.2 Nameplate
The nameplate should be fixed in an obvious and not easily damaged position: the nameplate content includes: container name, model specification, design pressure: design temperature, nominal volume, container type, motor power, stirring shaft speed, overall dimensions, total container volume, factory number, manufacturing date, manufacturer name, inspection seal,
|6.3 Painting, packaging, storage and transportation
6.3.1 The painting, packaging and transportation of mixing vessels shall comply with the provisions of JB2536.6.3.2 The shaft packaging cover, motor, reducer, etc. shall be packaged in moisture-proof, dust-proof and sun-proof packaging. 6.3.3 The outer dimensions of the mixing vessel packaged and transported as a whole machine shall comply with the relevant regulations of the transportation department, and the mixing device shall be loaded and fixed without damaging its performance. If the mixing device is packaged and transported in parts, the mixing shaft shall be prevented from bending and deformation, and the support for fixing the mixing shaft shall not be supported on the assembly part of the shaft.
6.3.4 The mixing vessel shall not be placed in the open air during storage. Additional instructions:
This standard is proposed by the Ministry of Chemical Industry.
This standard is under the jurisdiction of the Chemical Machinery and Equipment Standardization Technical Unit of the Ministry of Chemical Industry (Chemical Machinery Research Institute of the Ministry of Chemical Industry). This standard was drafted by Kaiping Machinery Factory of Guangdong Petrochemical Special Equipment Company, and Shanghai Chemical Engineering Design Institute and Zhejiang University participated in the drafting.
The main drafters of this standard are Zhang Qing, Wu Shaowei, and Shen Liangkang2 Installation and operation manual, the main contents include: design pressure, working pressure, test pressure, design temperature, working temperature (inside the container, jacket, coil or discharge pipe), working medium, nominal volume, container type, agitator speed, motor and reducer model specifications, power, sealing form and sealing material model specifications, lifting position and method. 6.1.3 General drawing of the mixing vessel (engineering drawing) and easy-to-photograph drawings. 6. 1.4
List of main parts of the mixing vessel (including packing list), other special instructions and technical data of the mixing vessel, 6.1.5
The quality certificate should include the following contents:
Chemical composition and mechanical properties of the main parts and materials. Nondestructive testing results of main parts,
Welding volume of main welds (including repair records of more than two times) and inspection results of main geometric dimensions after forming, heat treatment records, pressure test, tightness test, trial run test results, pressure vessel manufacturing license number of the manufacturer and product inspection certificate of the labor inspection department e.
6.2 Nameplate
The nameplate should be fixed in an obvious and not easily damaged position: the nameplate content includes: container name, model specification, design pressure: design temperature, nominal volume, container type, motor power, stirring shaft speed, overall dimensions, total container volume, factory number, manufacturing date, manufacturer name, inspection seal,
|6.3 Painting, packaging, storage and transportation
6.3.1 The painting, packaging and transportation of mixing vessels shall comply with the provisions of JB2536.6.3.2 The shaft packaging cover, motor, reducer, etc. shall be packaged in moisture-proof, dust-proof and sun-proof packaging. 6.3.3 The outer dimensions of the mixing vessel packaged and transported as a whole machine shall comply with the relevant regulations of the transportation department, and the mixing device shall be loaded and fixed without damaging its performance. If the mixing device is packaged and transported in parts, the mixing shaft shall be prevented from bending and deformation, and the support for fixing the mixing shaft shall not be supported on the assembly part of the shaft.
6.3.4 The mixing vessel shall not be placed in the open air during storage. Additional instructions:
This standard is proposed by the Ministry of Chemical Industry.
This standard is under the jurisdiction of the Chemical Machinery and Equipment Standardization Technical Unit of the Ministry of Chemical Industry (Chemical Machinery Research Institute of the Ministry of Chemical Industry). This standard was drafted by Kaiping Machinery Factory of Guangdong Petrochemical Special Equipment Company, and Shanghai Chemical Engineering Design Institute and Zhejiang University participated in the drafting.
The main drafters of this standard are Zhang Qing, Wu Shaowei, and Shen Liangkang
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