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道路运输液体危险货物罐式车辆紧急切断阀
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QCT 932-2012
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标准编号: QC/T 932-2012 (QC/T932-2012)
中文名称: 道路运输液体危险货物罐式车辆紧急切断阀
英文名称: Emergency shutoff valve of road tanker for dangerous liquid goods transportation
行业: 汽车行业标准 (推荐)
中标分类: T50
国际标准分类: 43.160
字数估计: 16,187
引用标准: GB/T 1239.2-2009; GB/T 2828.1-2003; GB/T 4356; GB/T 5218; GB/T 13927-2008; GB/T 15114; GB/T 15115; JB/T 9092-1999
起草单位: 东莞市永强汽车制造有限公司
归口单位: 全国汽车标准化技术委员会
标准依据: 工业和信息化部公告2012年第70号;行业标准备案公告2013年第12号(总第168号)
范围: 本标准规定了道路运输液体危险货物罐式车辆上的紧急切断阀的术语和定义、要求、试验方法、检验规则及标志。本标准适用于运输液体石油产品和其他符合GB 6944《危险货物分类和品名编号》标准中第三类危险液体, 包括在50℃时蒸汽压力不大于llOkPa的石油, 但不包括液态退敏爆炸品、毒害品和腐蚀品类的道路运输罐式车辆上安装的紧急切断阀。
QC/T 932-2012: 道路运输液体危险货物罐式车辆紧急切断阀
QC/T 932-2012 英文名称: Emergency shutoff valve of road tanker for dangerous liquid goods transportation
中华人民共和国汽车行业标准
QC/T 932—2012
道路运输液体危险货物罐式车辆紧急切断阀
中华人民共和国工业和信息化部发布
1范围
本标准规定了道路运输液体危险货物罐式车辆上的紧急切断阀的术语和定义、要求、试验方法、 检验规则及标志。
本标准适用于运输液体石油产品和其他符合GB 6944《危险货物分类和品名编号》标准中第三 类危险液体,
包括在50℃时蒸汽压力不大于110kPa的石油，但不包括液态退敏爆炸品、毒害品和腐蚀品类的道路运输罐式车辆上
安装的紧急切断阀。
2规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅所注日期的版本适用于 本文件。
凡是不注日期的引用文件，其最新版本（包括所有的修改单）适用于本文件。
4要求
4.1基本要求
4.1.1底阀应符合本标准的要求，并按经规定程序批准的产品图样和技术文件制造。
4.1.2底阀上所应用的原材料、外购件、外协件应符合相关标准的规定,并经生产企业验收合格后, 方可使用。
4.2功能要求
底阀应具备以下功能：
——当关闭时，将介质控制在罐体独立仓内部；
——当关闭时,在底部灌装条件下，非压力平衡式底阀允许介质通过自身充装压力流入罐体独 立仓，压力平衡式底阀应阻止介质流进罐体独立仓；
——当打开时,允许介质以底部灌装方式流进罐体独立仓,实现装料作业；
——当打开时,允许介质从罐体流进流体管道进行卸料作业；
——在解除外力驱动时能自动关闭；
——当底阀的驱动装置无法使用时,应能手动打开底阀。
4.3压力等级
底阀的公称压力级别不得小于0.6MPa。
4.4设计温度
4.4.1底阀的设计温度应为-20℃ +50℃,当有特殊环境要求时宜为-40℃~+70℃。
4.4.2底阀易熔元件中易熔合金的爆融温度应为75℃±5℃。
4.5材料
4.5.1材料的选用必须充分考虑其与所接触介质的相容性。阀体不允许采用非金属材料制造。
4.5.2生产商应提供该底阀装置上所有零部件完整的原材料材质证明，并说明材料对可能接触到 的危险化学品的相容性。
4.5.3底阀的壳体宜采用压铸铝合金铸件或不锈钢制造，压铸铝合金铸件应进行阳极氧化处理。
4.5.4压铸铝合金应符合GB/T 15114和GB/T15115的规定;当阀体采用不锈钢制造时，不锈钢材料应符合相应标准规定。
4.5.5 底阀内部的金属构件应采用不锈钢制造。
4.5.6 密封材料宜采用氟橡胶、氟塑料或其他能与介质相容的柔性材料。
4.6 底部灌装流量特性
4.6.1 底阀在0.5MPa 流体压力下，应保证底部装卸流量不小于150m³/h。
4.6.2 底阀的设计应保证能控制流体介质向罐内充装时不产生湍流、射流和飞溅。
4.6.3 当底阀在流体加载过程被突然关闭时，流体的瞬时冲击力不能损害底阀本体、流体管道系统
或流体管道系统的固定支架。
4.7 尺寸规格
4.7.1 底阀应满足DN100 公称通径。
4.7.2 底阀与罐体连接端法兰的尺寸规格应与附录A 一致。
4.7.3 底阀与流体管道连接端法兰的尺寸规格，应依据所选用的法兰形式，与附录 B 或 附 录C
一致。
4.8过滤网
4.8.1底阀应设置过滤网,以防止罐体内部细小的零散杂物进入底阀的密封面而影响底阀的关闭 密封性。
4.8.2过滤网应采用不锈钢材料。
4.9弹簧 4.9.1弹簧钢丝的材质应符合GB/T4356.GB/T 5218的相应要求。
4.9.2弹簧的设计、制造和检验应符合GB/T 1239.2—2009的规定，其制造精度不低于1级。
4.10驱动装置 4.10.1打开底阀的驱动形式可采用气动式、液压式、机械式或其他方式。
4.10.2底阀在开启驱动力丧失或断开时，应能自动关闭。
4.10.3当开启驱动信号解除时，在4.6所述的底部灌装流量条件下，关闭时间不得大于5 s。
4.10.4底阀的驱动装置应具备远程控制功能，当发生意外状况时，远程控制应能正常关闭底阀。
4.10.4底阀的驱动装置应具备远程控制功能，当发生意外状况时，远程控制应能正常关闭底阀。
4.10.5底阀的驱动装置应能避免由于冲击或其他意外行为而打开底阀。
4.10.6应保证在工作压力下底阀处于全开启状态，并持续放置48h不致引起自然关闭。
4.11阀体强度
在设计温度范围内，压力平衡式底阀的阀体在2. 5MPa或最大允许工作压力的1.5倍两者中取 最大值压力，
在保持试验压力持续时间不少于Wmin的条件下，应能保持完好;非压力平衡式底阀的 阀体在1.0MPa或最大允许
工作压力的1.5倍两者中取最大值压力，保持试验压力持续时间不少于 lOmin的条件下，应能保持完好。
4.12阀体密封性
在设计温度范围内，底阀的阀体（包括操作机构）在规定的压力条件下60s后不应泄漏。
4.13阀座密封性
在设计温度范围内，规定的压力条件下，保压60s后阀瓣、阀座与阀体接触面等处不允许有明显 可见的泄漏，
泄漏量符合JB/T 9092—1999中表4“所有弹性密封副阀门”类要求。
装配完成后的底阀通过启闭操作装置应能灵活开启和关闭，无卡阻现象，关闭时间不得超过2s。
4.15使用寿命
底阀在25000次无润滑状态下开启和关闭动作后，仍应具有良好的操作性和阀座密封性，经阀座密封性试验合格。
4.16破裂安全性
4.16.1底阀的阀座(密封机构部分)在设计上应保证其在被安装的罐体独立仓包裹范围之内。
QC/T 932-2012
ICS 43.160
T 50
PROFESSIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Emergency shutoff valve of road tanker for dangerous
liquid goods transportation
ISSUED ON. DECEMBER 28, 2012
IMPLEMENTED ON. JUNE 1, 2013
Issued by. Ministry of Industry and Information Technology of the People’s
Republic of China
Table of Contents
Foreword ... 1
1 Scope ... 2
2 Normative References ... 2
3 Terms and definitions ... 3
4 Requirements ... 4
5 Test method... 9
6 Inspection rules ... 11
7 Marking ... 13
Annex C (Normative) Dimension specifications of the connection flange
between bottom valve and the fluid pipeline (square shape) ... 14
Annex D (Informative) The testing device of the cracking safety ... 15
Annex E (Normative) The test position of the cracking safety ... 16
References and Original Chinese Documents ... 17
Foreword
This Standard is prepared according to the rules specified in GB/T 1.1-2009.
Annex A, B, C and E of this Standard are normative, annex D is informative.
This Standard is proposed and is under the jurisdiction of National Technical Committee
(SAC/TC 114) on Road Vehicles of Standardization Administration of China.
The responsible drafting organizations. Dongguan Yongqiang Auto Co., Ltd, Hanyang
Special Purpose Vehicle Institute, Yongjia Sanjiang Petroleum Machinery Plant, Zhejiang
Jialong Machinery Equipment Co., Ltd, Xiagong Chusheng (Hubei) Special Vehicle Co.,
Ltd and Dufu (Shanghai) Trade Co., Ltd.
The chief drafting staffs of this Standard. Su Debiao, Wu Yueling, Gong Zhangyong, Lyu
Shixiang, Wang Zhaoping and Yu Shijiang.
Emergency shutoff valve of road tanker for dangerous
liquid goods transportation
1 Scope
This Standard stipulates the terms and definitions, requirements, test methods, inspection
rules and markings of the emergency shutoff valve of road tanker for dangerous liquid
goods transportation.
This Standard is applicable to the transportation of liquid petroleum products and other
dangerous liquids which comply with the Class III dangerous liquid in GB 6944
“Classification and Code of Dangerous Goods”, including petroleum whose steam
pressure is not higher than 110kPa at 50 °C, but excluding the emergency shutoff valve of
road tanker for liquid desensitized explosives, poisons and corrosives.
2 Normative References
The articles contained in the following documents have become part of this Standard
when they are quoted herein. For the dated documents so quoted, all the modifications
(Including all corrections) or revisions made thereafter shall be applicable to this Standard.
GB/T 1239.2-2009 Cold coiled helical spring technical specifications - Part 2.
Compressions spring
GB/T 2828.1-2003 Sampling procedures for inspection by attributea-Part1. Sampling
schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 4356 Stainless steel wire rods
GB/T 5218 Alloy spring steel wires
GB/T 13927-2008 Industrial valves - Pressure testing
GB/T 15114 Aluminum alloy die castings
GB/T 15115 Die casting aluminum alloys
JB/T 9092-1999 Valve inspection and testing
the experiment pressure is maintained continuously for at least 10min, the valve body of
the non-pressure-balance bottom valve shall be in good state.
4.12 Sealing performance of the valve body
Within the designed temperature range, the valve body of the bottom valves (including the
operating mechanisms) shall not leak under the specified pressure state for 60s.
4.13 Sealing performance of the valve seats
Within the designed temperature range, under the specified pressure state, after
pressurized for 60s - valve clacks, valve seats and surfaces of valve body, etc. shall not
have any apparent and visible leakage. The leaking volume shall comply with the
4.14 Operability
After the assembly is completed, bottom valve shall be able to turn-on and turn-off quickly
through the on-off operating device; no blocking symptoms; and the closing time must not
be longer than 2s.
4.15 Service life
After 25,000 times of opening and closing actions without lubricating, bottom valve shall
still have good operability and good sealing performance on the valve seats, and pass the
sealing performance test on the valve seats.
4.16 Cracking safety
shall guarantee to be in the wrapping range of the independent barn of installed tank.
4.16.2 The bottom valve shall be designed as shear structure (shear grooving design).
When it suddenly cracks and falls off under the accidental damages like the collision of
external shell of the bottom valve, etc., the sealing mechanism in the wrapping range of
the independent barn of the installed tank shall be in good state without damage.
4.16.3 The impact energy causing the cracking and falling off of the external shell of the
bottom valve due to collision shall not be more than 1000J.
4.16.4 When the external shell of the bottom valve cracks and falls off caused by
external force, its sealing mechanism and the installation connection of the bottom seat
5.7.1 In this test, at least 4 samples shall be taken from each type of products as
sample-group for testing.
5.7.2 Testing device.
a) The testing device has a small container of which the side is connected to the
connecting-flange of the tested bottom valve, before the test is conducted.
b) The typical device structure parts are shown in Annex D.
c) The impact loading will be successively loaded to the four
vertical-central-line-surfaces of the tank-body-installation-connecting-flange and the
inspected bottom valve. The specific positions are shown as Annex E.
and the installation method shall be same as that of installing it in the independent barn of
the tank body. During the installation, the screws and sealing gaskets used shall be
consistent with the requirements of the instructions provided by the manufacturer.
5.7.3 Test procedures.
a) Install the tested bottom valve (including the operating device) on the protruding edge
of installation flange of the testing device;
b) Operate the bottom valve to validate its opening/closing functions;
c) Close the bottom valve and fully-fill the small container with water;
d) Pressurize the small container to at-least 20kPa hydrostatic pressure, and maintain
e) Let stand for 60s and observe it, so as to make sure the bottom valve is in good
sealing state;
f) Conduct the impact test according to the specified impact loading;
g) 1 min after implementing the impact test; make sure that the remaining pressure
inside the container is higher than atmospheric pressure. Check the leaking volume under
the circumstances that the sealing components of the bottom valve and the valve seat are
not damaged.
6 Inspection rules
6.1 Out-of-factory items
[1] QC/T 932-2012 Emergency shutoff valve of road tanker for dangerous liquid goods
transportation.
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