Gas drying device for CNG station

[0020] It should be noted that the embodiments in the invention and the features in the embodiments can be combined with each other if there is no conflict.

[0021] In the description of the invention, it should be understood that the terms "center", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention The creation and simplification of the description does not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of these features. In the description of the invention, unless otherwise specified, the meaning of "multiple" means two or more.

[0022] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or an optional connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meaning of the above terms in the creation of the present invention can be understood through specific circumstances.

[0023] The invention aims to provide a gas drying device for CNG filling stations, so as to provide a natural gas drying device with low cost and high separation and dehydration efficiency.

[0024] The invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0025] A gas drying device for CNG filling stations, comprising a drying tank and a gas supply tank 11, the drying tank includes a drying tank body 5 and a hemispherical cover 2, which is screwed to the drying tank body 5 through threads , The hemispherical cover 2 and the drying tank body 5 are connected with a sealing ring, the top of the hemispherical cover 2 is provided with a first exhaust port 1, the gas supply tank 11 is set inside the drying tube, and the gas supply tank 11 A cavity for draining water is formed between the gas supply tank 11 and the bottom of the gas supply tank 11. The gas inlet 9 is connected to the gas supply pipe 8. The gas supply pipe 8 is provided with an on-off valve. The top of the gas supply tank 11 is inverted. Funnel-shaped, the top of the gas supply tank 11 is provided with a second exhaust port 12, the bottom of the drying tank body 5 is provided with a drain port 7, the drain port 7 is provided with a drain valve, and the drain port 7 is provided with a sealing plug 6 and a sealing plug 6 is provided with a perforation through which the air supply pipe 8 penetrates. The air supply pipe 8 extends through the perforation to the outside of the drying tank body 5. A number of drainage through holes are provided on the sealing plug 6 and an umbrella-shaped baffle 4 is provided in the middle of the drying tank body 5. The umbrella-shaped baffle 4 is located above the gas supply tank 11. The umbrella-shaped baffle 4 is provided with a number of condensing tubes. The umbrella-shaped baffle 4 is provided with a number of vent holes. The vent holes are protruding punching ports. The drying tank The upper part of the main body 5 is provided with a desiccant layer 3 which can be detachably installed on the inner wall of the drying tank body 5, and the desiccant layer 3 is provided with a disassembly groove at the inner wall of the drying tank body 5.

[0026] The gas drying device for CNG filling station created by the present invention has the following advantages:

[0027] The present invention creates a gas drying device for CNG filling stations. The gas enters the drying tank body through the second exhaust port. The gaseous water in the gas is cooled and liquefied at the umbrella-shaped baffle to form liquid water and run along The umbrella-shaped baffle and the cavity flow out to achieve the purpose of preliminary dehydration and drying. The desiccant layer can also further dry the gas to ensure high natural gas separation and dehydration efficiency and good drying effect. Moreover, the device has a simple structure and reduces costs. It is suitable for application in CNG filling station.