Vehicle liquefied natural gas cylinder inspection service vehicle

Abstract

The invention discloses a car liquefied natural gas cylinder detection service van. The car liquefied natural gas cylinder detection service van comprises a car, a cantilever crane and a liquefied natural gas cylinder detection device, wherein the car is provided with a single-side-wing opening type compartment, and the cantilever crane is fixedly arranged at the front end of the opening side of the compartment. The car liquefied natural gas cylinder detection device comprises a pressure regulating type low-temperature liquefied gas source, a low-temperature gas cylinder, a low-temperature container, a nitrogen cylinder, a vacuum degree tester, a small vacuum pump unit, a hot air unit, a low-temperature flow meter, a low-temperature pressure meter, a low-temperature safety valve, a low-temperature stop valve and a dry type liquidometer adjusting device. The formed wet type and dry type gas cylinder liquidometer adjusting device, a safety valve checking device of the low-temperature gas cylinder, a combined type pressure regulation valve adjusting device, a gas cylinder interlayer vacuum degree testing device and a gas cylinder interlayer high-vacuum pumping device are reasonably arranged and can be used for door-to-door service along with the van, full detection and adjustment on the liquefied natural gas cylinder and accessories of the liquefied natural gas cylinder can be carried out on site, and high-vacuum pumping service can be provided for a gas cylinder interlayer, time is saved for an enterprise, and the car liquefied natural gas cylinder detection device is especially suitable for special equipment inspection bodies.

Description

technical field [0001] The invention relates to a detection vehicle, in particular to a vehicle for on-site detection of liquefied natural gas cylinders for vehicles, calibration of instruments and vacuuming of the interlayer of gas cylinders, belonging to the field of special vehicles. Background technique [0002] Natural gas is a clean energy that is encouraged by the state, and the State Council's "Natural Gas Utilization Policy" lists natural gas vehicles as a priority development project. According to estimates, compared with gasoline or diesel vehicles, the use of liquefied natural gas (hereinafter referred to as: LNG) vehicles can reduce carbon dioxide emissions by one-third and hydrocarbon emissions by four-fifths. At the same time, according to the current fuel price It is estimated that the fuel cost of LNG vehicles is about 30% lower than that of gasoline and diesel vehicles. The country's recent development goal is to focus on promoting the use of LNG clean ene...

AI Technical Summary

Problems solved by technology

At present, only a few of the special equipment inspection institutions in the country are capable of carrying out regular inspections of welded adiabatic gas cylinders, resulting in a large number of welded adiabatic gas cylinders (more than 95%) not being inspected within the time limit, and the gas cylinders are modified without authorization, and safety accessories are missing or malfunctioning. Generally, the user unit returns the gas cylinder for repair only when it finds that there is an obvious failure or the performance does not meet the requirements of use. Due to the existence of large safety hazards and waste of energy efficiency, safety accidents occur from time to time

[0003] At present, most of the users across the country are regional bus companies and passenger transport companies, heavy truck transport, and various industrial gas filling stations, because there is no mobile equipment for comprehensive testing of welded insulated gas cylinders and their accessories. , the company can only be required to drive to the inspection site for inspection, adjustment and vacuuming, which takes a lot of time and obviously affects the normal operation of the company

Images