Some standard content:
JB/T89321999
This standard is proposed and managed by the National Technical Committee for Standardization of Refrigeration Equipment. The responsible drafting unit of this standard is Yuyao Fuji Air Conditioning Equipment Co., Ltd. The main drafter of this standard is Xu Yangkang.
Standard of the Machinery Industry of the People's Republic of China
Fan box
Cabinet fan
JB/T8932—1999
This standard specifies the classification, basic specifications, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage of fan boxes.
This standard is also applicable to fan boxes with filters and silencers. This standard does not apply to fire-fighting special and high-temperature smoke exhaust fan boxes. 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T9068-1988 Engineering method for determination of sound power level of noise for heating, ventilation and air conditioning equipment GB10891--1989 Safety requirements for air handling units GB/T14294--1993 Combined air conditioning units JB/T7246--1994 Appearance quality of heating and cooling ventilation equipment JB/T9062--1999
Heating, ventilation and air conditioning equipment
Painting technical conditions
JB/T 9065--1999
General technical conditions
Packaging of heating and cooling ventilation equipment
3 Definitions
This standard adopts the following definitions.
3.1 Fan box
Ventilation equipment with fans placed in the box. 3.2 Rated air volume
The air volume flow rate at the fan box outlet under standard air conditions, m3/h. 3.3 External residual pressure
The total pressure (Pa) at the air outlet after the fan box overcomes its own resistance. 3.4 Standard air state
Refers to the air state when the temperature is 20C, the pressure is 101.3kPa, and the corresponding density is 1.2kg/m2. 4 Classification, parameter and model expression method
4.1 Classification
4.1.1 According to the structural type:
a) hanging type;
b) floor-standing type.
4.1.2 According to the use characteristics:
National Machinery Industry Bureau approved 758 on July 12, 1999
2000-01~01 implementation
a) ventilation type fan box;
b) purification type fan box;
c) silencer type fan box;
d) others.
4.2 Basic parameters
JB/T 8932—1999
The basic code of the fan box is expressed by the rated air volume and arranged in a piecewise arithmetic progression, see Table 1. Table 1
Specification code
Rated air volume
Specification code
Rated air volume
Model representation
30 000
Application characteristics
Structural type
Specification code
Specification code×103m2/h
-Fan box code (Z: axial flow fan)
Table 2 Classification code table
Classification items
Structural type
Model example:
Application characteristics
Hanging type
Floor-standing type
Ventilation type
Purification type
Silencer type
FX6D-T represents a hanging ventilation fan box with a rated air volume of 6000m/h. FX251.-J indicates a floor-standing purification fan box with a rated air volume of 25000m/h. 5 Requirements
5.1 Basic requirements
5.1.1 The fan box shall be manufactured according to the drawings and technical documents approved by the prescribed procedures. 5.1.2 The rated air volume of the fan box shall comply with the provisions of 4.2. 5.1.3 The structure of the fan box shall meet the following requirements: 10
a) The fan box body shall have sufficient strength and shall not be deformed during transportation, start-up, operation and shutdown; b) The wall panels of the fan box shall be firmly and tightly combined with the insulation or sound-absorbing materials; c) The fan box body shall have good airtightness; d) The fan outlet of the fan box shall have a flexible pipe connection and the fan shall be equipped with a vibration isolation device; (12)
(12000)
JB/T 8932--1999
e) When the motor of the fan box is installed outside the box, there shall be airtight measures and the transmission part shall have reliable protection devices. 5.1.4 The filter, muffler and other parts and components in the fan box shall comply with the relevant national standards. 5.1.5 The fan box shall use fans whose performance meets the national standards and mechanical industry standards. Noise should meet the following requirements:
a) For forward multi-blade centrifugal fans, at the highest full pressure efficiency and a speed not exceeding 1000r/min, the limit of the A sound pressure level should not exceed the provisions of Table 3. When the speed exceeds 1000r/min, the limit of the A sound pressure level is allowed to increase by no more than 2dB (A). For fans exceeding No. 10, the values of 3.2~~10 can be used. b) The A sound power level of the backward centrifugal fan should be equal to or less than 24dB (A). c) The A sound level (sound pressure level) of the axial fan should not exceed 28dB (A). Table 3 Limits of A sound pressure level of forward multi-blade centrifugal fans Fan No.
A sound pressure level, dB (A)
5.1.6 The surface of the components made of ferrous metal in the fan box should be rust-proofed and anti-corroded. The metal surface of the whole machine and its parts and components should meet the requirements of JB/T9062.
5.1.7 The outer surface of the fan box should be free of obvious scratches, rust spots and indentations, and the surface should be smooth, the spray layer should be evenly hooked, the color should be consistent, and there should be no flow marks, bubbles and peeling.
5.1.8 The fan box should be clean and there should be no debris inside the box. The appearance and cleanliness requirements should comply with the provisions of JB/T7246. 5.2 Performance requirements
5.2.1 Starting
5.2.1.1 The fan box can start and operate normally at 85% of the rated voltage. Under the above voltage conditions, start the fan box 3 times, and each start should be carried out after the motor stops completely. 5.2.1.2 The fan box assembled on site should be inspected and tested after assembly. 5.2.2 Rated air volume and external residual pressure
Under the test conditions specified in this standard, the actual measured air volume value should be no less than 95% of the rated value after being converted into standard air state. The measured value of the external residual pressure of the fan box shall not be less than 93% of the rated value. 5.2.3 Measured power value
Under the test conditions specified in this standard, the measured power value shall not be greater than 110% of the rated value. 5.2.4 Fan box noise
The noise sound pressure level limit of the fan box shall not exceed the provisions of Table 4. Table 4 Fan box noise limit
Rated air volume
5000~~6000
7 000~8 000
9 000~12 000
15 000~20 000
25 000~~ 50 000
60 000 ~~ 80 000
Note: Excluding silencer fan boxes.
5.2.5 Vibration of fan box
Sound pressure level
JB/T8932--1999
When the fan speed is greater than 800r/min, the vibration speed (RMS speed) of the unit shall not exceed 4mm/s; when the fan speed is less than or equal to 800r/min, it shall not exceed 3mm/s. 5.2.6 Safety performance requirements shall comply with the provisions of GB10891. 5.3 Material requirements
5.3.1 The steel plates, profiles, pipes, etc. used in the fan box shall comply with the provisions of relevant standards. 5.3.2 When other materials are used for the fan box, they shall comply with the provisions of this standard and other relevant standards. 5.3.3 The thermal insulation and sound insulation materials used in the fan box shall be non-toxic, non-corrosive, odorless, and have flame retardant or self-extinguishing properties and are not easy to absorb water. 6 Test methods
6.1 Test conditions
6.1.1 The fan box should be tested under the condition of 5-40℃ inlet air. 6.1.2 The fan box should be assembled and installed according to the requirements of the product manual. No special treatment measures shall be adopted unless otherwise specified in the test method.
6.2 Performance test methods
6.2.1 Starting test
a) Start at 85% of the rated voltage, run stably for at least 5 minutes, cut off the power supply, stop running, and repeat at least 3 times. b) Check whether there are any loose parts, noise, heat and other abnormal phenomena. 6.2.2 Rated air volume and external residual pressure test
The rated air volume and external residual pressure test shall be carried out in accordance with the method specified in Appendix B of GB/T14294-1993. 6.2.3 Input power test
While carrying out the test in 6.2.2, directly measure the current, voltage or input power. 6.2.4 Noise test
The noise measurement method shall be measured in accordance with Appendix C "Measurement method of sound pressure level" in GB/T9068--1988. The fan box measurement points are 8 points, 1m above the ground, and the plane is 1m away from the vertical plane of the unit. 4 points are located at the four corners of the box, and the other 4 points are located in the middle of the four vertical planes, and the average value is taken. 6.2.5 Vibration test
a) Use a contact vibration meter to measure the vibration velocity in the three-dimensional directions perpendicular to each other at the four corners of the bottom plate of the test fan box; b) Take the maximum value as the vibration velocity of the unit. 6.2.6 Insulation resistance test
The insulation resistance value between each live part and the non-live metal part of the unit shall be measured with a 500V, 100MQ resistance meter according to the provisions of GB10891.
When conducting inspection, it is allowed to measure at room temperature. 6.2.7 Insulation dielectric strength test
After the test in 6.2.6, the fan box shall be subjected to the insulation dielectric strength test. When the voltage to the ground is higher than 30V, an AC voltage of 1500V, 50Hz shall be applied between the live parts and the non-live metal parts of the unit for 1.0min, and there shall be no breakdown or flicker; when the voltage to the ground is less than 30V, an AC voltage of 500V, 50Hz shall be applied between the live parts and the non-live metal parts. The test method shall be in accordance with the relevant provisions of GB10891.
6.2.8 Appearance inspection
The appearance inspection of the fan box shall comply with the relevant provisions of JB/T7246. 7 Inspection rules
7.1 Inspection classification and inspection items
7.1.1 The inspection of the fan box is divided into factory inspection and type inspection. 761
7.1.2 See Table 5 for the inspection items.
7.2 Factory inspection
Name of inspection items
Appearance and cleanliness
Inspection of main parts and components
Safety inspection
Starting and operation
Air volume and external residual pressure
Input power
JB/T8932-1999
Table 5 Inspection items
To which clause of this standard
5.1.7;5.1.8;6.2. 8
5.1.4;5.1.5;5.1.6
5.2.66.2.6;6.2.7
5.2.1, 6.2.1
5.2.2;6.2.2
5.2.3;6.2.3
|5.2. 5,6.2. 5
Type inspection "Factory inspection
7.2.1 Each fan box must be inspected and qualified by the inspection department of the manufacturer and accompanied by a quality inspection certificate before it can be shipped. Remarks
7.2.2 The factory inspection of the fan box should be carried out according to the items specified in Table 5. At least one unit shall be sampled for every 50 units of the 5th, 6th and 7th items in Table 5. If the annual output is less than 50 units, one unit shall be sampled. 7.3 Type inspection
7.3.1 Type test shall be carried out when the fan box has any of the following conditions: a) When a new product is finalized;
b) When the structure, manufacturing process, and materials of the finalized product have changed significantly, which may affect the product performance; c) When production is resumed after being suspended for more than one year; d) When mass production is carried out once every three years; e) When the national quality supervision agency proposes a type test requirement. 7.3.2 The sampling method for type inspection should be selected from qualified products that have passed the factory inspection. The number of samples to be drawn: When less than 200 units, the sampling number is 1 unit; when more than 200 units, it is 2 units. 7.4 Judgment Determination rules
For the sampling of type inspection and factory inspection (according to items 5, 6 and 7 in Table 5), the judgment rules shall comply with the following provisions:
a) For a sample taken, if one of the main items or two of the other items in the inspection items are unqualified, the sample shall be judged as unqualified; b) When sampling, if one unit is unqualified, double the number of units shall be sampled. If there is still one unit unqualified after the inspection, the batch of units shall be judged as unqualified.
8 Marking, packaging, transportation and storage||t t||8.1 Marking
8.1.1 Each fan box should have a product label and be fixed in a conspicuous position of the unit, which should include the following contents: a) Fan box model and specifications;
b) The main technical parameters of the unit (rated air volume, residual pressure, rated current, power, noise, etc.); c) The overall dimensions of the unit (length × width × height); d) The weight of the unit:
e) Factory number;
f) Factory date;
g) Manufacturer's name and trademark.
JB/T 8932—1999
8.1.2 The fan box should be marked with signs such as the working status (such as the direction of the fan), and an electrical circuit diagram should be attached. 8.2 Packaging
8.2.1 The packaging of the fan box should comply with the provisions of JB/T9065. 2 The packing box should contain a packing list, product certificate, product installation and use instructions, and a list of technical documents. 8.2.2
8.2.3 The packing box should have a packing mark that is not easy to fade, including: a) product name and model;
b) product gross weight and net weight;
c) box body dimensions: length × width × height; d) packing date;
e) destination (port) and consignee;
f) departure (port) and consignee.
8.3 Transportation and storage
8.3.1 During transportation, the fan box should not be hit, squeezed, thrown, or exposed to rain or snow. 8.3.2 The fan box should be stored in a moisture-proof, rain-proof and fire-proof place, and there should be no corrosive gas around. 763
JB/T9062-1999
This standard is a revision of ZBJ72017-88 "Technical Conditions for Painting of Heating, Ventilation and Air Conditioning Equipment". Compared with ZBJ72017-88, the main technical content of this standard has been changed as follows: Chapter 5, Chapter 6, Chapter 7, Chapter 8, Chapter 10 and Chapter 11 in the original ZBJ72017-88 are now merged into Chapter 5; necessary modifications and supplements have been made to the performance requirements in Table 1; - Appendix B in ZBJ72017-88 has been removed. Appendix A of this standard is the appendix of the standard.
This standard replaces ZBJ72017-88 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Refrigeration Equipment. The responsible drafting unit of this standard: Shanghai Tonghui-Carrier Air Conditioning Equipment Co., Ltd. The main drafters of this standard are Yang Weirong and Zhang Wei. 764
1 Scope
Standard of the Machinery Industry of the People's Republic of China
Heating, Ventilation and Air-conditioning Equipment
Painting Technical Conditions
The painting specification for heating ventilationand air-conditioning equipmentsJB/T 9062--1999
Replaces ZBJ72017--88
This standard specifies the painting technical requirements, performance tests and inspection rules for heating, ventilation and air-conditioning equipment. This standard applies to heating, ventilation and air-conditioning equipment (hereinafter referred to as equipment); it does not apply to radiators, dust removal equipment, etc. Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T1720—1979 Determination of adhesion of paint films GB/T1727—1992
General preparation method for paint films
GB/T1730—1993
GB/T1731—1993
GB/T1732—1993
Determination of hardness of paint films Pendulum damping test
Determination of flexibility of paint films
Determination of impact resistance of paint films
GB/T1733—1993
Determination of water resistance of paint films
GB/T 1735—1979
Determination of heat resistance of paint films
GB/T1740—1979 Determination of moisture and heat resistance of paint films GB/T1763—1979 Determination of chemical resistance of paint films GB/T 1764—1979
Determination of film thickness
GB/T 1766—1995
Rating method for aging of paint and varnish coatingsGB6514—1995Safety regulations for painting operationsPainting process safety and ventilation purificationGB/T9276—1996Test method for natural climate exposure of coatings3 Definitions
This standard adopts the following definitions.
3.1 Phosphating
The metal surface is chemically reacted to form a non-metallic, porous phosphate film. 3.2 Adhesion
The ability of the coating to adhere to the coated surface or between coatings. 3.3 Gloss
The property of reflecting light in a certain direction when the surface of an object is exposed to light. 3.4 Water resistance
Approved by the State Bureau of Machinery Industry on July 12, 1999, implemented from January to January 2000
Water resistance of coating.
3.5 Salt water resistance
Salt water resistance of coating.
3.6 Weather resistance
JB/T 9062—1999
Durability of coating under the influence of natural climate factors. 3.7 Flexibility
Cracking and peeling of coating on substrate after bending test. 3.8 Impact resistance
Evaluates the performance of coating to deform rapidly under high-speed load impact. 3.9 Hardness Www.bzxZ.net
Refers to the resistance of coating surface when penetrated by another harder object. 3.10 Moisture and heat resistance
The performance of coating to resist high heat (47°C ± 1°C) and high humidity (94% to 98%). 3.11 Heat resistance
The coating can still maintain good performance under certain high temperature. 3.12 Viscosity
A property of the fluid that hinders its relative flow. 3.13 Paint
An organic substance in a flowing or powdery state, which can be dried and solidified to form a thin film when applied on the surface of an object, and can evenly cover and adhere to the surface well.
3.14 Coating
Refers to the operation of applying the paint on the clean surface of the object to be coated, and then drying and forming a film or spreading the paint on the surface to be coated. 4 Coating methods
4.1 Manual coating
4.2 Air spraying
4.3 Airless spraying
4.4 Electrostatic spraying
4.5 Electrophoretic coating
4.6 Powder melting coating
4.7 Powder electrostatic coating
5 Requirements
5.1 Requirements for parts and components to be painted5.1.1 All parts and components to be painted can be painted only after passing the inspection. 5.1.2 When parts and components have special requirements such as heat resistance and oil resistance, suitable coatings should be used. 5.1.3 For parts made of metals such as copper and aluminum, the coating method shall be specified according to the application scope of the product. 5.2 Requirements for surface treatment before painting
5.2.1 There should be no burrs and sharp edges on the surface of parts and components, and defects such as welding slag, spatter, gate, riser, flash, meaty, and metal chips, oil stains and other debris should be removed.
5.2.2 The surface of the casting should be treated by mechanical cleaning, shot peening, etc. to remove the rust layer, sticky sand, paint and other attachments on the surface. 5.2.3 Sheet metal, riveted parts, etc. should be treated by manual or mechanical methods according to the different rust levels of the surface to make the coated surface reach the treatment quality level required by the paint. Follow Appendix A (Appendix to the standard). 766
JB/T 9062--1999
5.2.4 When applying oil-resistant, heat-resistant and other coatings, the non-phosphating surface must be processed to the original color of the metal before painting. 5.2.5 For parts and components with special requirements, phosphating treatment should be carried out after rust removal. The thickness of the phosphating film is determined according to the requirements of the coating process. 5.3 General coating process requirements for manual, air, airless, electrostatic and electrophoretic coating methods 5.3.1 When there are hammer marks or other depressions on sheet metal parts, riveted parts, and castings, putty should be used to fill them. Scrape the first layer of putty thinly on the entire surface, then polish it slightly and then scrape the second layer of putty thinly, requiring it to be delicate, flat and even. Generally, the thickness of each layer of putty does not exceed 0.5mm, and each layer of putty should be dried before the previous layer before the next process.
5.3.2 Primer coating
5.3.2.1 The coating should be applied evenly and completely, and the coating thickness is generally 20 to 40um. 5.3.2.2 The coating drying method is determined according to the relevant requirements of the coating. 5.3.3 Topcoat coating
5.3.3.1 The workpiece should be clean and free of dust, oil, etc. before coating. 5.3.3.2 The number of topcoat layers to be selected depends mainly on the appearance and use conditions of the product. Generally, one layer is applied. Products with high requirements for decoration and special use conditions are generally coated with 2 to 3 layers or more, and the coating thickness is generally 20 to 40 μm. 5.3.3.3 The topcoat should be flat, evenly coated, uniform in color, and free of defects in appearance. 5.3.3.4 The coating drying method shall be determined according to the relevant requirements of the coating. 5.3.4 Each layer should be polished before coating to enhance the adhesion of the coating. 5.3.5 The coating that needs to be diluted should be diluted according to the relevant technical requirements. 5.3.6 The ambient temperature when spraying the coating should not be lower than 5°C, and the site should be clean. 5.3.7 The coating is generally sprayed in an environment where the relative humidity does not exceed 70%. When the relative humidity exceeds 70%, corresponding measures should be taken. 5.4 General coating process requirements for powder melting and powder electrostatic coating methods 5.4.1 When using thermosetting powder coating, it should be heated and cured. 5.4.2 If a primer is required for electrostatic powder coating, a coating with good conductivity should be used. 5.4.3 When using thermoplastic powder coating, a primer is generally required. 5.4.4 The object to be coated generally does not need to be preheated, but the flow dipping method and spraying method should be preheated to above the melting point of the powder. To obtain a thick coating, other powder coating methods can also be preheated.
5.4.5 Rapid cooling should be carried out after heating and plasticization (or curing). 5.4.6 The coating thickness of the melt coating method is generally 100~500μm. The coating thickness of the powder electrostatic coating method is 40200um. The workpiece is preheated before coating, and the coating thickness can reach 100~500μm. 5.4.7 The heating parameters are based on the regulations for plasticization (or curing) of powder coatings. 5.5 Selection and acceptance requirements of coatings, thinners, and putties 5.5.1 The color, appearance, and mechanical strength of the coating should meet the design requirements, and be durable and stable during use, and resistant to erosion by the medium of the use environment.
5.5.2 The coating should have good adhesion to the surface to be coated, and the matching between the coatings should be good during multi-layer coating. 5.5.3 The construction performance, drying performance, and coating performance of the selected coating should be compatible with the coating conditions. 5.5.4 Try to choose coatings with low toxicity and less pollution. 5.5.5 When diluting the coating, a special or general thinner for this type of coating should be used. 5.5.6 Putty should have good scraping, drying, sanding, filling, oil resistance, and small shrinkage and absorption. Good adhesion to paint.
5.5.7 The paint and putty entering the factory shall be inspected and accepted according to relevant standards for the following items: a) Paint: appearance color, drying time, gloss, adhesion, viscosity, etc.; b) Putty: oil resistance, etc.
5.6 Painting inspection
5.6.1 The coating should be firm, and the appearance of the decorative coating should be flat, beautiful, and consistent in color. The edges and corners of the product coating should be neat and clear. 767
2—1999
JB/T 9062-
5.6.2 The protective coating of the product should be uniform, without sagging, blistering, whitening, obvious shrinkage, orange peeling, etc. In addition to the above defects, decorative coatings should not have obvious scars and scratches. 6 Performance test
6.1 Coating performance test specimens shall comply with the provisions of GB/T1727. 6.2 Coating performance test and requirements are as specified in Table 1. 6.3 Coating performance shall be tested in batches as required by the coating entering the factory. Table 1
Coating properties
Coating thickness
Adhesion
Impact resistance
Flexibility
Weather resistance
Moisture and heat resistance
Salt water resistance
Water resistance
Heat resistance
Inspection rules
Coating performance test
According to GB/T1764
According to GB/T1730
According to GB/T1720
According to GB/T1732
According to GB/T1731
According to GB/T1766
According to GB/T 9276
According to GB/T1740
At a temperature of 47°C ± 1°C and a relative humidity of 94% to 98%, the salt water resistance in accordance with GB/T1763 is measured. 3% sodium chloride solution is measured according to GB/T 1733
According to GB/T1735
Performance and requirements
According to the thickness specified in Table 1 of GB/T1727-1992 or the technical conditions
Meet the hardness index of the product
Above grade 2
Observe with a 4x magnifying glass and there shall be no cracks, wrinkles or peeling. After bending, the coating shall be observed with a 4x magnifying glass and there shall be no damage such as mesh, cracks or peeling
The gloss loss rate shall be between 50% and 60%
According to the comprehensive assessment grade of GB/T1766, it shall be good or above. There shall be no abnormality within the time specified by the product standard
The coating has no peeling, wrinkling, blistering, rusting, discoloration and gloss loss, and is qualified if it meets the product standards.
Record the phenomenon and recovery time of gloss loss, blistering, wrinkling, peeling, rusting, etc., and it is qualified if it meets the product standards.
According to the temperature specified in the product standard, within the specified time, take out the coating sample, cool it to a temperature of 25℃±1℃, and there is no delamination, wrinkling, blistering, discoloration, etc. on the surface, or check it according to the product standards.
After the coating is completed, the inspection department will inspect it according to 5.6.1 and 5.6.2 under the condition of sufficient light. After the inspection is qualified, fill in the words "painting qualified".
8 Safety, sanitation technology and environmental protection of coating 8.1 The safety and sanitation of the pre-treatment process of coating shall be implemented in accordance with the relevant national safety and sanitation regulations. 8.2 The safety of coating operation shall be implemented in accordance with GB6514. 8.3 The sanitation of coating operation shall be implemented in accordance with the relevant national sanitation regulations. 8.4 The emission of harmful substances shall be implemented in accordance with the relevant national emission standards. 768
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.