CN104316273A - Gas cylinder body airtightness detection device - Google Patents

Abstract

The invention relates to a device for detecting air tightness of a cylinder body of a gas cylinder, which belongs to the field of testing devices. At least one air or water pipeline pipe, bottom plate, pressure plate, nozzle, and top plate of the present invention are characterized in that there is at least one nozzle installation hole on the bottom plate, a pressure plate is arranged above the bottom plate, and an air hole corresponding to the nozzle is opened on the pressure plate. Bottle pressure hole, the pressure plate is connected with the top plate through the oil cylinder. Buckle the cylinder body upside down on the nozzle, and the pressure plate is driven by the oil cylinder to press the bottom of the cylinder body, so that the cylinder body is clamped between the nozzle and the pressure plate to ensure that the mouth of the cylinder body is sealed, and water or air is pumped through the inner hole of the nozzle. Press into the cylinder body, maintain a certain pressure for a period of time, and observe whether there is air or water leakage at the bottom of the cylinder body. The invention can directly measure the airtightness of the cylinder body of the gas cylinder, detect the leaking cylinder body in advance, avoid the waste caused by the follow-up processing of the waste parts, reduce the cost and improve the productivity. The tested part to be detected by the present invention is not limited to the product of the cylinder body of the gas cylinder, and products with a structure similar to the cylinder body of the gas cylinder can be detected.

Description

Gas cylinder body air tightness testing device

technical field

The invention relates to a gas cylinder body airtightness detection device, which belongs to the field of testing devices.

Background technique

Fire bottle is one of the important industries in the fire protection industry in all countries in the world, and it is also one of the indispensable products in the fire protection industry of various countries. For the production of fire bottles, the production process of most enterprises in my country is to divide the gas cylinder into three parts: the cylinder body, the upper head, and the valve seat, which are processed separately and then welded and assembled to complete the production of the gas cylinder. For the air tightness test of gas cylinders, the existing device can only test the air tightness of the gas cylinders after the gas cylinders are completely produced. And materials cause waste, reduce the production efficiency of enterprises, and increase production costs. Since gas cylinder leakage often occurs at the bottom of the gas cylinder body, this invention designs a device that only performs air tightness testing on the gas cylinder body after the bottom of the gas cylinder body is closed and before welding with the upper head. Detect waste products, avoid waste caused by continuous processing of waste products, and improve productivity.

Contents of the invention

The object of the present invention is to provide a gas cylinder body airtightness detection device which can detect the waste parts of the gas cylinder body early, avoid continuing to process the waste parts, save the process, time and materials, and improve the productivity.

The technical scheme that the technical problem that the present invention solves adopts:

The invention comprises: at least one air or water pipeline, a bottom plate, a pressure plate, a nozzle, and a top plate. The pressure hole of the gas cylinder, the pressure plate is connected with the top plate through the oil cylinder.

Further: a slide bar is provided between the bottom plate and the top plate, a slide bar penetration hole is opened on the pressing plate, and the pressing plate can slide freely on the sliding bar.

Further: the oil cylinder is fixed in the middle of the top plate, and the top plate is fixedly connected with the bottom plate through the column.

Further: the inner surface of the pressure hole of the gas cylinder is a curved surface matching the bottom of the gas cylinder.

Further: The nozzle is a cylindrical structure, and a snap ring is fixedly connected to the outer surface of the nozzle.

The beneficial effects of the present invention are: the cylinder body of the gas cylinder is buckled upside down on the nozzle, and the pressure plate is driven by the oil cylinder to press the bottom of the cylinder body of the gas cylinder, so that the cylinder body of the gas cylinder is clamped between the nozzle and the pressure plate, ensuring that the cylinder body of the gas cylinder is The mouth is sealed, water or air is pressed into the cylinder body by the pump through the inner hole of the nozzle, maintain a certain pressure for a period of time, and observe whether there is air leakage or water leakage at the bottom of the cylinder body.

The invention can directly measure the airtightness of the cylinder body of the gas cylinder, detect the gas cylinder cylinder body leaking in advance, avoid the waste caused by subsequent processing of waste parts, reduce the cost and improve the productivity.

The test piece to be detected by the present invention is not limited to the product of the cylinder body of the gas cylinder, and products with a structure similar to the cylinder body of the gas cylinder can be detected.

Description of drawings

The present invention is further described below in conjunction with accompanying drawing:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is an axonometric view of Fig. 1;

Fig. 3 is a schematic diagram of the base plate structure;

Fig. 4 is the schematic diagram of pressing plate structure;

Fig. 5 is a schematic diagram of the nozzle structure;

Fig. 6 is a work flowchart of the present invention;

Fig. 7 is a lifting state diagram when no pressure is applied in the present invention;

Fig. 8 is a pressurized state diagram during the pressurization process of the present invention;

In the figure, 1 slide rod, 2 pressure plate, 3 top plate, 4 oil cylinder, 5 nut, 6 column, 7 elbow, 8 water tank, 9 nozzle, 10 oil cylinder piston pin, 11 bottom plate, 12 locking coil, 13 diverter valve, 14 shunt pipe, 15 screw, 16 cylinder pin, 17 nozzle installation hole, 18 gas cylinder pressure hole, 19 sliding rod penetration hole, 20 snap ring, 21 cylinder body.

Detailed ways

Example 1

See Fig. 1-6, the present invention is made up of water pipe, bottom plate 11, nozzle 9, pressure plate 2, top plate 3, four nozzle mounting holes 17 are opened on the bottom plate 11, and nozzle 9 is housed on the nozzle mounting hole 17, above the bottom plate 11 A pressure plate 2 is provided, and a cylinder pressure hole 18 corresponding to the nozzle 9 and a slide rod penetration hole 19 corresponding to the slide rod 1 are opened on the pressure plate 2. A top plate 3 is arranged above the pressure plate 2, and the top plate 3 passes through four uprights. 6. Connect the water tank 8 or the bottom plate 11 with the nut 5. The middle part of the top plate 3 is fixed with the oil cylinder 4. The oil cylinder 4 is connected with the pressure plate 2. There is a slide bar 1 between the bottom plate 11 and the top plate 3. The pressure plate 2 is driven by the oil cylinder 4. It can move up and down along the slide bar 1, and the water pressure is connected with the water source through the water pipeline.

The water pipeline is composed of a shunt pipe 14 , a shunt valve 13 and an elbow 7 . The bottom plate 11 is fixed on the top of the water tank 8 by screws 15 . The nozzle 9 has a cylindrical structure, and the outer surface of the nozzle 9 is fixedly connected with a snap ring 20 , which is fixed on the bottom plate 11 by a locking coil 12 . The inner surface of the pressure hole 18 of the gas cylinder is a curved surface matching the bottom of the gas cylinder. The oil cylinder 4 is installed and fixed on the top plate 3 and the pressing plate 2 with the oil cylinder pin 16 and the oil cylinder piston pin 10, so as to ensure that the oil cylinder 4 applies pressure evenly to the pressing plate 2.

Detailed inspection work process

When the equipment is in use, place the cylinder body 21 upside down on the nozzle 9, and then control the oil circuit so that the oil cylinder 4 exerts pressure on the bottom of the cylinder body 21 through the pressure plate 2. Control the movement direction of the pressure plate 2 so that the cylinder pressure hole 18 on the pressure plate 2 is in close contact with the bottom of the cylinder body 21, and at the same time control the water channel to pressurize and fill the inside of the cylinder body 21 through the water pipe and nozzle 9, Stop water injection after reaching the predetermined water pressure, and observe whether there is water leakage or bubbling in the center of the bottom of the gas cylinder body 21, so as to judge the sealing performance of the bottom of the gas cylinder body 21, and check the gas cylinder body after the inspection is completed. 21 depressurize and release water, lift the pressing plate 2, take out the cylinder body 21 of the gas cylinder, and the detection is completed.

Fig. 7 is a lifting state diagram of the present invention when no pressure is applied. In this state, the cylinder body 21 of the gas cylinder that has been detected last time is taken out, and the next gas cylinder body 21 to be detected is placed.

Fig. 8 is a diagram of the pressurization state during the pressurization process of the present invention. In this state, the pressure plate 2 applies a certain working pressure to the gas cylinder body 21, and at the same time, the control water channel pressurizes and fills the gas cylinder body 21 through the nozzle 9 for a certain period of time.

Example 2

In this embodiment, air is used instead of water in Embodiment 1 to fill the cylinder body 21 of the gas cylinder, and its airtightness is tested. The structure and working process of the detection device are the same as those described in Example 1.

The invention has the advantages that the airtightness of the gas cylinder can be detected when the gas cylinder has only the body structure, and the leaking gas cylinder body can be detected in advance, so as to avoid the waste caused by subsequent processing of waste parts, reduce the cost and improve the productivity. Moreover, it can detect gas cylinder barrels of different calibers and airtight products similar to the structure of the gas cylinder barrel, and only need to replace the corresponding pressure plate and nozzle module.

Claims (5)

1. The air tightness detection device of the gas cylinder body, including: at least one gas or water pipeline, a bottom plate, a pressure plate, a nozzle, and a top plate. It is characterized in that at least one nozzle installation hole is opened on the bottom plate, and there is a The pressure plate is provided with a cylinder pressure hole corresponding to the nozzle, and the pressure plate is connected with the top plate through the oil cylinder. 2. The gas cylinder body airtightness detection device according to claim 1, characterized in that a slide bar is provided between the base plate and the top plate, a slide bar penetration hole is provided on the press plate, and the press plate can freely move on the slide bar. slide. 3. The gas cylinder body airtightness detection device according to claim 1, characterized in that the oil cylinder is fixed in the middle of the top plate, and the top plate is fixedly connected to the bottom plate through a column. 4. The gas cylinder body airtightness detection device according to claim 1, characterized in that the inner surface of the pressure hole of the gas cylinder is a curved surface matching the bottom of the gas cylinder. 5. The gas cylinder body airtightness detection device according to claim 1, characterized in that the nozzle is of a cylindrical structure, and a snap ring is fixedly connected to the outer surface of the nozzle.