Some standard content:
ICS 47.020.90
Registration No.: 7707-2000
Ship Industry Standard of the People's Republic of China
CB/T 295-2000
Replaces CB/T 295-1999
Musthroom ventilators for ship
Musthroom ventilators far shilp2000-09-20 Issued
National Defense Materials Science and Technology Industry Committee
2001-01-01 Sales end
CB/T 295--2000
This standard is a revision of CB/T295-1999 <Marine nest ventilator>CB/T 295-1999 was directly adjusted from GB3887-83 in June 1999 according to the State Council's "Notice on the Transformation of Professional Standards and National Standards after Rectification" and the original "Notice on the Identification of Ship Professional Standards and Relevant National Standards as Industry Standards" of the former China Shipbuilding Corporation. This revision adds nine specifications to the B, C, and D type heat shields, improves the structure, and changes the installation form of the rodent and insect nets (or fireproof nets) of the fire shield from the original installation inside the shield to the installation outside the shield for easy maintenance. This standard is in line with GB/T 8029-1996 "Technical Conditions for Marine Wind Turbines", and is not applicable to inland ships. Inland ships shall comply with GB/T 346792. This standard replaces CB/T 295-1999 from the date of implementation. This standard is issued by the National Shipbuilding Industry Technical Committee and is owned by Jiangnan Yufan (Group) Co., Ltd. The main contributors of this standard are Yu Yuye, Yu Wen and Yang An. This standard was first issued in 1964 and revised for the first time in October 1988 and used as a national standard. It was approved as an industry standard in June 1999.
1 Specification
CB/T 295--2000
Marine Fungus Ventilation Sleeves
This standard defines the classification, requirements, test methods, inspection regulations and markings of marine fungus ventilation sleeves (hereinafter referred to as ventilation sleeves). This standard is applicable to the design, manufacture and acceptance of ventilation sleeves installed on the open-air deck of marine cabins. 2. The provisions contained in the following references shall constitute the provisions of this standard before being cited in this standard. When this standard is published, the versions mentioned are valid. All standards will be revised. Parties using this standard shall consider the feasibility of using the following references in the latest version. GB 89231988 Classification of rust grades and grades of rust on painted steel surfaces. 1. Avoid effective formula. 2. Internal opening and closing ventilation. 3. External closed ventilation structure. 4. External opening with axial flow fan. 5. Medical fixed air flow. 6. Public road diameter DN. 150--350. 250~1400. CB/T 295-2000
32For the structural type and main dimensions of type A wind shelter, see Figure 1 and Table 2. When the single board of the wind tunnel is greater than 900 mm, a support bracket is added. 1—Holding 12—Dry filler 19—Front explosion needle + 4—Rodent and insect proof (or water net 5—End cup: 6—Wind balance: 7—Root
Figure 1Type A ventilator type
Main dimensions of type A wind shelter
Nominal diameter
, ventilation condition does not include the weight of the windshield 40
CB/T295--2000
3.3For the structural type and main dimensions of type B wind shelter, see Figure 2 and Table 3. When the windshield height is more than 0 When it is confirmed, the smoke plate is generated, 1--hand wheel: 2-wind circulation; 3-screw 14--element sealing solution; 5-wind alarm; 5-anti-insect net (sense fire period) 1?-or letter: 8--indicator,-casing: 10~-pressure injection cup Figure 2B ventilation auxiliary structure type
Public communication management
Often the most viewing hall
Also; Overheating example ear element not bad wind person's point quantity
CB/T295-—200G
B Benefit wind support main gain Ni inch
FXB-LH
Tr30X6-LF
Tr4OXT-LH
TSX8LH
CE/T295—2000
Result 4 E type back teeth defective structure and change the size of the cell density 3 and 4. I
wind protection
method: pad hope relatively on the ball probability benefit size requirements glass 1 almost wheel: 2 wind accumulation; 3 sample; 4-damage to the filler + 5-reducing shade dense disk F (-- wind, for the suffering of the (general history network), 7-- wind front 8-finger system fall; 9-set bone 110-oil filling cup from 3C plastic ventilation simple abstract configuration or
nominal grinding diameter
CB/T 295-2G00
C Main dimensions of type D ventilation duct
Tx24X5-LH
r3×6LH
Tr47-LH
Tr46×8-LH
EB/T295--2000
3.5D ventilation duct configuration and main dimensions are shown in Figures 4 and 5. ||tt| ... 295-2000bzxz.net
4 Important matters
4.1 Materials of main parts of ventilation tubes see 6.H
Table 6 Main parts materials
Property name
Wind width, wind sugar density
Facing rat, fat worm direction
Phenol fire meat
Rotary body period structure
Carbon monoxide
Not Yu Shan
City construction fee
Processing yellow width
Q235--A
1Ce18N
Cup standard number
GB 712-2000
GB/T 100-1988
GB/T 1220-1992
GB/T 5232-7985
GB/T 5232 -- 1985
Meanwhile, the surface of the ventilator should be smooth, and the surface should be smooth. The material should be KHT300-06
Q235--A
GA/1 9440-1988
GB/T 700-1988
The pressure should not exceed 14.7 MPa, and the hardness should not exceed HA9 ~49Q235A
OB/T 200--1988
4.3 The diameter deviation of the ventilation tube and the ventilation diameter is ±3mm + the vertical deviation is 2/1030 (for the ventilation body height). 4.4 The welding surface of the ventilation tube should be free of defects such as cracks, rust, burning, etc. 4.5 The ventilation tube should be tightly sealed and the movable parts should be coated with neutral grease. 4, 6 The internal and external decoration of the steel base parts of the ventilation tube should not be less than 2 or St2 according to GB/T 8923, and the gland should not be dirty.
4.7 After the flushing test of type A, B and C plaque bacteria, the tested part shall emit water droplets and water erosion, and the sealing frequency shall be less than 0.5 (r is the thickness of the seal body). The test method is as follows.
5.1 Tightness ball test
51, a water or test
cancer diameter is not less than 12.5 mm, the water pressure is not less than 0.25 MP, and the seal shall not exceed 1.0 mm. When flushing, add 3 times of water, and the result shall meet the requirements of 4.7. 5.1.2 Impression test
In the dense filling, evenly apply powder, purple wind Lino plate, heat and then check the difference between the membrane sample and the real edge of the medical problem. The infection shall meet the requirements of 4.7 5.2 Appearance inspection
Use the pregnancy test method to carry out appearance inspection. The results should meet the requirements of 4.2.4.4, 4.4,6 Requirements. 53 Sizes shall be checked by measuring tools, and the diameter and straightness of the air cylinder shall be the same. The structure shall meet the requirements of 4. 6 Inspection Rules 6r1 The inspection before ventilation is divided into plastic inspection and ventilation inspection. 6.2 Ventilation inspection 6. 2. 1 A plastic inspection shall be carried out in any of the following situations: a) Batch production of products 1) The structure, material, and process have large cavitation, non-continuous batch production, a) The product is transferred to another factory for production, and the inspection department considers it necessary.
6.2.2 Type inspection items shall be as per Table 7.
Inspection items
Tightness inspection
Appearance inspection
Dimensional inspection
CB/T.295--2000
Table 7 Inspection items
Required chapter number
4.2,4.4,5.5.4.6
Supervision method case number
5.1.1 to 5.1.2
Order inspection
Factory inspection
6.2.3 The number of inspection samples shall be as follows: For each specification of ventilation tube, one ventilation tube shall be taken for type inspection and tightness inspection shall be carried out in accordance with 5.1.1 in the first batch of production.
6.2.4 The judgment rule is: if the type inspection of the ventilation scale meets the requirements of Table 7, it can be considered as qualified for the type inspection. If it is found to be unqualified, it is allowed to be re-inspected after repair, and if it is qualified, it is considered to be qualified for the type inspection. 6.3 Factory inspection
6.3.1 The filling of the factory inspection of the ventilation scale shall be in accordance with Table 7. 6.3.2 Short batch and sampling: each ventilation scale shall be strictly inspected, and the tightness inspection shall be carried out in accordance with 5.1.2. 6.3.3 The judgment rule is: if the factory inspection of the ventilation scale meets the requirements of Table 7, it can be considered as qualified for the factory inspection. If it is found to be unqualified, it is allowed to be re-inspected after repair, and if it is qualified, it is considered to be qualified for the factory inspection. 6.14 After the ventilation scale is qualified, the inspection department shall issue its certificate of conformity. 7 Labeling, packaging and transportation
7.1 Labeling
7.1.1 The following product labels shall be indicated on the obvious part of the product: $) Manufacturer name or trademark
6) Product name!
) Product marking
: u) Manufacturing date or production batch number;
) Inspection certificate,
7. 2 Packaging and transportation
1.2.1 The product can be packaged in straw bags or according to the date. 7.2.2 The product packaging should be accompanied by a product inspection certificate. 7.2.3 Shelter from wind and rain. Necessary measures should be taken to prevent rain during transportation, and avoid being hit.
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