Leakage detection device and liquefied gas steel cylinder leakage detection method

Abstract

The invention relates to the technical field of leak detection equipment, and provides a leak detection device and a liquefied gas steel cylinder leak detection method.The leak detection device comprises a leak detection cover, a detection module, an air blowing module, information reading equipment and a controller, and the detection module comprises detection equipment and a sampling pipe connected to the detection equipment; the sampling tube is movably connected to the leak detection cover along the depth direction of the cavity, and the sampling tube is partially located in the cavity and is provided with a sampling port; the air blowing module comprises air blowing equipment and an air blowing nozzle connected to the air blowing equipment, the information reading equipment is arranged on the leak detection cover, and the controller is electrically connected to the information reading equipment, the air blowing equipment and the detection equipment; according to the leak detection device provided by the embodiment of the invention, the purpose of detecting different types of liquefied gas steel cylinders for different time lengths can be achieved, the detection accuracy is effectively improved, and the probability of leak detection can be effectively reduced.

Claims

1. A leak detection device, characterized in that: include A leak detection cover, wherein a cavity with an opening is formed inside the leak detection cover; A detection module, the detection module comprising a detection device and a sampling tube connected to the detection device, the sampling tube being movably connected to the leak detection cover along the depth direction of the cavity, a portion of the sampling tube being located in the cavity, and a sampling port being provided in the portion of the sampling tube located in the cavity; A blowing module, the blowing module comprising a blowing device and a blowing nozzle connected to the blowing device, the blowing nozzle being arranged on the leak detection cover and facing the cavity; An information reading device, wherein the information reading device is arranged on the leak detection cover; as well as A controller is electrically connected to the information reading device, the air blowing device and the detection device.

2. The leak detection device according to claim 1, characterized in that: The leak detection device also includes a hanger with a hollow structure, which is arranged on the leak detection cover. The hanger is provided with a first connector and a second connector connected to the hollow structure. The first connector is connected to the sampling tube through a hose structure, and the second connector is used to connect the detection equipment or the blowing equipment.

3. The leak detection device according to claim 2, characterized in that: The leak detection device also includes a multi-way valve, a first valve port of the multi-way valve is connected to the second connector, a second valve port of the multi-way valve is connected to the detection device, a third valve port of the multi-way valve is used to connect to a blowing device, and a fourth valve port of the multi-way valve is connected to the blowing nozzle.

4. The leak detection device according to claim 2 or 3, characterized in that: The suspension rod is rotatably arranged on the leak detection cover, and a first elastic reset member is further arranged between the suspension rod and the leak detection cover. The first elastic reset member is configured to be elastically deformed when the suspension rod rotates relative to the leak detection cover.

5. The leak detection device according to claim 4, characterized in that: The leak detection cover is provided with a guide bearing, and the guide bearing is connected to the sampling tube; the guide bearing is provided with a second elastic reset member, one end of the second elastic reset member is connected to the fixed part of the guide bearing, and the other end of the second elastic reset member is connected to the sampling tube.

6. The leak detection device according to claim 5, characterized in that: The leak detection cover is provided with a plurality of guide bearings arranged in a ring, and the plurality of guide bearings are respectively connected with the sampling tubes.

7. The leak detection device according to claim 6, characterized in that: A buffer structure is arranged at the end of the sampling tube.

8. The leak detection device according to claim 7, characterized in that: The sampling tube comprises a connecting tube section and a terminal tube section which are located in the cavity and are connected to each other, and the extending direction of the connecting tube section intersects with the extending direction of the terminal tube section; the sampling port is provided on the connecting tube section and / or the terminal tube section.

9. The leak detection device according to any one of claims 5 to 8, characterized in that: The leak detection device also includes a lifting mechanism, and an output end of the lifting mechanism is connected to the suspension rod.

10. A method for detecting leakage of a liquefied gas cylinder, characterized in that: The leak detection device according to any one of claims 1 to 9, wherein the leak detection method comprises The leak detection cover of the leak detection device is arranged at the bottle mouth of the liquefied gas cylinder to be tested; The information reading device obtains the information identification on the liquefied gas cylinder to be tested, and determines whether the liquefied gas cylinder to be tested is any one of a low-risk cylinder, a medium-risk cylinder, and a high-risk cylinder; When the liquefied gas cylinder to be tested is judged to be a low-risk cylinder, the detection equipment performs routine detection; when the liquefied gas cylinder to be tested is judged to be a medium-risk cylinder, the detection equipment performs precision detection; when the liquefied gas cylinder to be tested is judged to be a high-risk cylinder, the detection equipment performs timeout detection; wherein, the detection time of the precise detection is greater than the detection time of the routine detection, and the detection time of the timeout detection is greater than the detection time of the precise detection.

Images