Protective device and novel gas cylinder

The utility model relates to a protection device and a novel gas cylinder, the protection device comprises an elastic unit and a protection unit, and the elastic unit is arranged on the gas cylinder; the protection unit is arranged on the upper portion of the tightening unit and used for protecting a gas cylinder valve. The device has the advantages that the clamping elements arranged in the elastic units are correspondingly adjusted to adapt to the gas cylinders with different sizes for mounting and fixing, so that the mounting convenience is improved; the valve of the gas cylinder is protected through the protection unit, it is guaranteed that the valve is not collided during transportation, and subsequent use of the gas cylinder is facilitated by disassembling the protection element. 本实用新型涉及一种防护装置及新型气瓶，防护装置包括松紧单元和防护单元，松紧单元设置于气瓶；防护单元设置在松紧单元的上部，用于保护气瓶阀门处。其优点在于，通过对松紧单元内设置的夹持元件进行相对应的调节来适配不同尺寸的气瓶进行安装固定，增加了安装便捷性；通过防护单元对气瓶的阀门处进行保护，保障了运输时阀门处不被碰撞，通过对防护元件进行拆卸，便于后续使用气瓶。