Contact type high-temperature-resistant testing device suitable for W-shaped flame boiler SNCR (selective non-catalytic reduction) denitration system

The utility model provides a contact type high-temperature-resistant testing device suitable for a W-shaped flame boiler SNCR denitration system. The contact type high-temperature-resistant testing device is reasonable in structure. Which is mainly composed of an outer-layer water-cooling jacketed pipe, an inner-layer water-cooling jacketed pipe, a middle measuring pipe, a jacketed supporting reinforcing plate, a jacketed sealing end plate, an inter-jacketed communicating port, a water inlet connector, a water drainage connector, a temperature measuring connecting pipe, an extracting and sampling connecting pipe and a device supporting lug seat, and the outer-layer water-cooling jacketed pipe, the inner-layer water-cooling jacketed pipe and the middle measuring pipe form a double-layer jacketed pipe. The jacket supporting reinforcing plates are uniformly arranged between the double-layer jackets and are used for supporting the inner parts of the double-layer jackets, the jacket sealing end plates are arranged