Improvement of filling technology of hydraulic CNG (compressed natural gas) filling substation
A gas-filling sub-station and hydraulic technology, which is applied to the equipment loaded into the pressure vessel, the method of container discharge, gas/liquid distribution and storage, etc., can solve the problems of waste, environmental damage, waste of energy, etc.
Inactive Publication Date: 2013-02-13
毛春明
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Problems solved by technology
[0005] (3) Every time a tanker of natural gas is sold, there are 8 intervals, wasting 12 minutes, and the efficiency is low
[0006] 2. The exhaust volume is constant, and the performance is poor when adapting to the peak period of gas filling
[0007] 3. When the tank car is reversed to install the unloading hose, it is necessary to discharge all the high-pressure natural gas in the 5-meter-long hose into the atmosphere for pressure relief operation, which wastes energy and damages the environment
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[0016] The invention has been practically applied in a large-scale hydraulic CNG filling substation. The specific scheme adopted is: the joint between the unloading hose and the hydraulic working skid adopts image 3 The connection method in (b) is to connect two three-way high-pressure metal pipe fittings, and connect two unloading hoses, so that the hydraulic CNG refueling sub-station system has three unloading hoses in total. On each unloading hose, a high-pressure ball valve is installed at the connection between the unloading hose and the quick connector. Up to 3 tank cars can be connected in series during the peak refueling period, and 2 tank cars can also be connected to each other at ordinary times to achieve 24-hour non-intermittent refueling.
[0017] Practice has proved that the application of the present invention greatly shortens the waiting time of vehicles in the peak period of refueling, realizes high-pressure refueling, and has stable air pressure.
[0018] ...
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Natural gas is an efficient clean energy source. Hundreds of thousands of automobiles have converted from oil into gas in China, and a plurality of natural gas filling stations are built front place to place. A hydraulic CNG (compressed natural gas) filling substation is one of common filling substations in the market at present. Certain disadvantages also exist in the gas station; excessive intermittent time exists after a tank car of compressed natural gas each time is sold; the gas station has poor ability of adapting with an inflatable peak; the bleeding quantity of the natural gas is large when a discharge hose is reversely arranged on the tank car, and the environmental performance is poor. Two or three tank cars are connected together in series by loading a few of high-pressure metal pipe fittings, high-pressure hoses and high-pressure ball valves, so that the filling technology has the following effects that the vehicle filling time is saved; the work efficiency is improved; air pressure is automatically adjusted at the inflatable peak and a low cycle; long-time high-pressure aeration at the peak is ensured, and the natural gas discharged into the atmosphere is greatly reduced when the discharge hose is reversely arranged on the tank car.
Description
Technical field: [0001] The equipment system of the hydraulic CNG refueling substation is composed of a special tank car, a hydraulic working skid, and a refueling machine. Its working principle is: the hydraulic working skid provides high-pressure oil, which is injected into each long-tube steel cylinder of the special tanker successively through a series of control valves, and the natural gas in the cylinder is pushed out at a constant pressure of 20Mpa, so that the gas is supplied to the vehicle through the gas dispenser. Install natural gas. Background technique: [0002] The common hydraulic CNG refueling sub-stations currently on the market have the following disadvantages: [0003] 1. (1) Each tank car has 8 long-tube steel cylinders. After each cylinder is filled with oil and the natural gas is pushed out, then the next cylinder is filled with oil (commonly known as pouring tanks). There must be a certain time interval between the two. Oil time, usually takes 1 min...
Claims
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IPC IPC(8): F17C5/02F17C13/02
Inventor 毛春明
Owner 毛春明