This standard specifies the product classification, technical requirements, test methods and inspection rules for petroleum storage tank flame arresters. This standard applies to flame arresters (hereinafter referred to as flame arresters) for storage tanks that store petrochemical products with a flash point below 60°C, such as gasoline, kerosene, light diesel, crude oil, benzene, toluene, etc. SY/T 0512-1996 Petroleum Storage Tank Flame ArrestersSY/T0512-1996 Standard download decompression password: www.bzxz.net

People's Republic of China Petroleum and Natural Gas Industry Standard SY/T 05121996
Flame arrester for oil storage tanks
1996-04-21 Release
China National Petroleum Corporation
1996-10-01 Implementation
This standard is based on SY75?89, and will take effect on the date of this standard, replacing SY75129. This standard was first issued on: December 31, 1987: China National Petroleum Corporation Planning and Design Technical Standards and Pipeline Construction Professional Standards Association This standard is issued by: Tuoshunxin Oil Machinery Factory, this standard is issued by: Zhang Dianlu, Ma Chongyao, Ding Zhenpeng, and other staff members. Scope
People's Republic of China Petroleum and Natural Gas Industry Standard Flame arrester for oil storage tanks
SY/T 05121996
Replaces SY 7513-#7
This standard specifies the product classification, technical requirements, test methods and inspection rules of petroleum tank flame arresters. This standard is applicable to storage tank flame arresters (hereinafter referred to as flame arresters) for petrochemical products with a flash point below 60, such as gasoline, kerosene, light diesel, crude oil and benzene. 2 Reference standards
The following standards contain provisions: The provisions of this standard are constituted by reference in this standard. When the standard is published, the versions shown are valid. All standards will be revised. Parties using this standard should explore the feasibility of using the latest versions of the following standards: GB/T321-1980 Priority numbers and priority number systems GB/T1804-1992 General tolerances for linear dimensions without specified tolerances GB5908:1986 Flame retardant properties and test methods for flame arresters for stone storage tanks GB/T64[4·1986 Dimensional tolerances
GB, 9438--1988 Technical specifications for aluminum alloy castings GB/T9439--1988 Grey cast iron castings | |tt||GB/T13306-1991 Label
GB／I13384--1992 General Technical Conditions for Packaging of Mechanical and Electrical ProductsSY5302-87 General Technical Conditions for Grey Cast Iron Parts of Petroleum Drilling Machinery Products.JB78-59 Iron Flange
3 Requirements
3.1 Product Classification
3.1.1 The fire barrier structure of the flame arrester is generally a corrugated type, and other types can also be used. The representation method is determined by the manufacturer using the Chinese phonetic alphabet. : The corrugated type is represented by B. 3.1.2 The specifications of the flame arrester are represented by the nominal diameter of the connecting flange: see Table 1. Table 1 Flame arrester specifications
Nominal diameter DN
3.1.3 Product model:
3.1.3.1 The multiple model of the flame arrester is GZ, ", "Z" and "Z" are composed of two Chinese phonetic initials. 3.1.3.2 The product model is as follows: China National Petroleum Corporation approved on April 21, 1996, implemented on October 1, 1996
Example:
SI/T 05121996
Specification: wwW.bzxz.Net
Fire arrester structure type;
Product name code.
The corrugated petroleum tread tank fire arrester with a nominal diameter of 150m111 is represented as: GZB1503.2 Technical requirements
3.2.1 The structural design of the positive fire arrester should ensure that the structure is reasonable and easy to repair. Its manufacture shall comply with the approved drawings and technical documents. 3.2.2 Materials:
3.2.2.1 The flame arrester body should be made of cast aluminum, and its performance shall comply with the provisions of GB/T9438; cast iron can also be used: its performance shall comply with the provisions of GB/T9439; other equivalent materials can also be used and implemented in accordance with the corresponding standards. 3.2.2.2 The fire barrier layer must be made of metal materials that are resistant to corrosion under the conditions of use. 3:2.2.3
Animal or plant fibers or other materials that affect the performance and life of the flame arrester shall not be used in the materials inside and at the joints. 3.2.3 Performance:
The pressure resistance of the flame arrester body should be 0.9MPa, without leakage or permanent deformation. 3.2.3.1
The explosion resistance performance of the flame arrester should be able to continuously prevent explosions for 13 times, and each time it can prevent fire. The fire resistance performance of the flame arrester should be able to withstand the burn resistance test 1. This There is no backfire during the period. The pressure loss of the flame arrester fluid should not be greater than the requirements of Table 2. The pressure loss in Table 2 should not be less than the requirements of Table 3. 980
爽3 Ventilation
Nominal diameter DN
Ventilation
3.2.4 Requirements for flame arrester explosion-proof joint: 80
Explosion-proof joint surface A should not be less than 10mm (see Figure 1). Yang explosion ·
Isolation surface
SY/ T 0512-1996
3.2.4.2 The maximum allowable value of flameproof surface roughness R is 12.5u1. The flameproof surface after processing should not have defects such as pores, sand holes and cracks. 3.2.4.3
3.2.4.4 The flameproof surface is not allowed to have scars. Technical requirements for manufacturing and assembly:
The manufacture of iron parts shall comply with the provisions of Ci/T9439: The manufacture of cast aluminum parts shall comply with the provisions of GB/T9438. 3.2.5.1
All parts 3.2.5.2
The manufacture of cast iron flanges shall comply with the provisions of JB78. When flanges are made of other materials, they shall comply with the provisions of relevant standards. 3.2.5.3
3.2.5.4After the shell pressure test, the test medium inside the control shall be completely cleaned and anti-rust paint shall be applied. 3.2.5.5All parts must be inspected and qualified (purchased parts and outsourced parts must have a certificate of qualification) before they can be assembled. For water pressure test, explosion-proof joints Key parts and components such as the width of the joint surface, the quality of the fire barrier layer and the fire barrier box should be re-inspected. 3.2.5.6 The fire barrier components should not be stuck when installed in the filling body. The position of the fire barrier layer in the fire barrier box should be correct. The flameproof combination should comply with the detailed test rules given in 3.2.4 of this standard:
3.2.6 The connection type of the fire barrier should comply with the provisions of 1.3.1 and 1.3.2 of GB5908-1986 4 Test method
The water pressure test pressure of the fire barrier shell is 0.9MPa, no leakage or permanent deformation 4 .1F
4.2 The flame arrester explosion test shall refer to the provisions of 2.2 of GB5908-1986, and the volume concentration of propane vapor in the mixed gas shall be (43=0.215)%
4.3 The flame arrester burning test shall comply with the provisions of GB59082.3. The test medium is a mixture of propane gas and air, and the volume concentration of flash alkane in the mixed gas is (4+0.4)%. 4.4 The pressure loss and ventilation test uses a fan to provide the wind source, and the test device is shown in Figure 2. The inner diameter of the test tube of the test device should be equal to the nominal diameter of the flame arrester, and its wall surface should be flat and smooth, and there should be no leakage at the joints of the system. 5
1- fan: 2- thermometer; 3- outlet test tube, 4- air rectifier: 5- flame arrester to be tested; 6- inlet test tube: 7- exhaust rectifier: 8- differential pressure gauge: 9- collector Figure 2 Pressure loss and air flow test device
4.4.1 The inlet end is measured from the center of the test tube (with the inner diameter of the section) within 1.5 meters. There shall be no obstacles inside. 4.4.2 On the same section of the test tube, 4 pressure measuring holes with a diameter of 2 to 3 mm shall be drilled evenly and perpendicular to the tube wall. The circumference of the pressure measuring holes shall be smooth and free of burrs. A short conduit connected to the static pressure hole on the outer wall of the node shall be welded. The inner diameter of the conduit shall be larger than the static pressure hole of the test tube. ! The four-point static pressure hole joints shall be connected separately with a pressure gauge in accordance with the law. The arithmetic mean of the measured static pressure of the point is the average static pressure of the whole.
SY/T05121996
4.4.3 The collector can be plaque-shaped or conical. Its shape and size are shown in Figure 3. Its inner wall surface must be flat and smooth. The roughness R value of the material should be greater than 3.2m:
4.4.4 The shape and size of the inlet and outlet rectifier grids are shown in Figure 4. The inlet and outlet rectifier grid baffles are 0.012~～0.015. The spacing between the baffles of the outlet airflow grid is h-0.08 inches～0.75%10.305d
iG. sd 10. se
arc
inlet rectifier
Figure 3 collector dimensions
. ct yo. 5d
outlet rectifier
Figure 4 gas avoidance rectifier and outlet rectifier dimensions4.4.5
can choose a type of pressure gauge, the inner diameter of the glass tube should be uniform, generally 6～【O1m1, the length is determined by the size of the measured4.4.6F
the flame barrier layer of the flame arrester should be cleaned and installed on the flame arrester, and then the test is carried out. The test medium flows from one end of the flame arrester4.4.7 The absolute pressure of the air used as the test medium is 0.1MPa, the temperature is 20°C, the relative humidity is 50%, and the density is 1.2kg/m3. If the air is not in this state, it should be converted to this state. 4.4.8 Use a pressure gauge, a thermometer and a dry-bulb hygrometer to measure the air disturbance near the air outlet. Start the motor to make the fan run, adjust the valve to achieve flow regulation, and read the pressure gauge after the liquid is stable (A/.A/). Read once every minute, read three times in total, and average the values. Calculate the pressure loss according to formula (1). The calculated result should not be greater than the provisions of 3.2.3.4 of this standard.
Wherein: 6p---pressure loss, Pa;
Ai,——pressure difference of section 1~2, Pa
Ah—pressure difference of section 2~3, Pa
SY/ T 05121996
6p- 24A,- Ah,
4.4.10The reading of the manometer at point e after the liquid level stabilizes (A) is taken once every minute, for a total of three readings, and the average value is taken. The ventilation volume is calculated according to formula (2), and the calculation result shall comply with the provisions of Article 43.2.3.5 of this standard. [h
Q= 1.414F@
Wherein: α—flow rate, m/s;
F---test tube inner diameter cross-sectional area, 1m3;
Ah,—-vacuum degree at point e, Pat;
p——ambient air density, kg／m;
Φ——collector coefficient (cone=0.98, circular Φ=0.99). 5 Inspection rules
5.1 Inspection
The quality of the flame arrester and the quality of the explosion-proof joint surface shall be inspected before the flame arrester leaves the factory, and its assembly quality shall be inspected according to 6.2. It can only leave the factory after passing the inspection.
5.2 Type inspection
The first batch of flame arresters, or when there are major changes in their design, process, or materials, shall be subject to type inspection in accordance with 4.1 to 4.4 of this standard, and the type inspection shall be no less than two units. If one of them fails, the number of units to be inspected may be doubled. If there is still one unit that fails, a full inspection shall be conducted.
6 Marking: Packaging, transportation, and storage
6.1 Each flame arrester shall be fixed with a permanent product label in an obvious position, and the installation direction shall be indicated. The label shall comply with the provisions of GB 1330G and shall indicate
a) Product name:
b) Product model and specifications:
c) Product weight;
d) Factory number:
e) Manufacturing date and manufacturer name;
f Trace gas volume.
g) Pressure drop,
6.2 The surface of the flame arrester should be painted with anti-rust paint, and then two coats of topcoat should be applied on the outer surface. The paint should be evenly coated and bright in color. The outer surface of the flame arrester should be painted with baking varnish as much as possible. The flange surface should be coated with anti-rust grease and protected with a plastic cover. The body should be wrapped with plastic film. The packaging should comply with the provisions of GB/T13384. 6.3 The flame arrester should be stored in a warehouse with rainproof facilities. During its storage and transportation, there should be special signs in obvious places.
6.4 The following documents should be attached when the flame arrester is shipped: Packing list:
SY/ T 0512 -1996
b) Product description - the content should include the ventilation volume of the product, the parameters of the fire retardant performance:
pressure loss,
core product certificate.
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