QC/T 1062-2017 (QCT 1062-2017)

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QC/T 1062-2017	English	299	Add to Cart	4 days	Road tanker for light fuel transportation-adaptor for bottom loading and unloading	QC/T 1062-2017	Valid	QC/T 1062-2017

QC/T 1062-2017
Road tanker for light fuel transportation-adaptor for bottom loading and unloading
Road transport light fuel tank vehicle drain valve
1 Scope
This standard specifies the terms and definitions, requirements, test methods, and inspections of dump valves installed on road fuel light fuel tank vehicles.
Rules and identification.
This standard applies to the dump valve installed on road transport tank vehicles, and its transportation medium is limited to diesel or
These are light fuel oil (UN No. 1202), motor gasoline (UN No. 1203), and kerosene (UN No. 1223).
2 Normative references
The following documents are essential for the application of this standard. For dated references, only the dated version applies to this
standard. For undated references, the latest version (including all amendments) is applicable to this standard.
GB/T 13927-2008 Industrial valve pressure test
GB/T 5218 alloy spring steel wire
GB 12268 List of dangerous goods
3 terms and definitions
Column F terms and definitions apply to this standard.
3.1
Loading and unloading vale
Installed on the road transport light fuel tank vehicle, a valve for loading/unloading the bottom of the vehicle.
3.2
Adapter
The component of the end of the drain valve is externally connected.
3.3
Interlocking device
A device consisting of a pneumatic interlock valve, a gas source switch, a gas pipeline, etc., is installed on the oil discharge valve, and is connected to the oil during the oil loading and unloading process.
For quick coupling of the pipe, the emergency shut-off valve can be opened by the interlocking device.
3.4
Water hammer pressure
Transient pressure in a piping system due to a sudden change in the flow state (flow rate).
surge pressure
3.5
M seal cap
The cap is installed on the drain valve to protect the sealing surface and ensure the sealing.
3.6
Sight glass
A device installed on a valve through which the condition of the medium inside the valve can be observed.
4 Requirements
4.1 Function
The dump valve should have the following functions.
a) Mechanical connection with external coupler by quick connection;
b) Ensure sealing when closed.
4.2 Driver
4.2.1 The drive of the oil discharge valve shall meet the following requirements.
a) Open the valve manually or by other means;
b) The valve should be able to be opened by the crane pipe oil delivery valve or other matching joints.
c) The valve should be able to close automatically and ensure sealing after the open drive mode fails or is disconnected.
4.2.2 In the absence of internal pressure, ensure that the disc of the oil discharge valve can be pushed under a horizontal thrust of 250 N.
4.3 Stress
4.3.1 The nominal pressure of the oil discharge valve shall not be less than 500 kPa.
4.3.2 The water hammer pressure of the drain valve is 5 times the nominal pressure.
4.4 Materials
4.4.1 The selection of the material of the drain valve must fully consider its compatibility with the medium in contact.
4.4.2 The shell of the drain valve should be made of aluminum alloy castings or stainless steel castings, and should not be made of cast iron and non-metal materials.
4.5 Temperature range
The design temperature of the dump valve should be -20 ~ 50; when there are special environmental requirements, the design temperature should be -40 ~ 70.
4.6 Assignment of interlocks and other optional accessories
4.6.1 The installation position of the interlock drive and other optional accessories should be reserved for the oil discharge valve. For the allocation position, see Appendix A.
4.6.2 Interlock drive shall be
4.7 Dimensional requirements
4.7.1 The drain valve adapter shall meet the requirements of Appendix B, and the maximum opening depth shall not be less than 50.8 mm (calculated from the sealing surface).
The parallelism tolerance of the sealing surface of the sealing end and the sealing surface of the disc must not be greater than 0.1 mm, excluding transition angles such as chamfers.
4.7.2 The dimensions of the connection flange of the dump valve shall meet the requirements of Appendix