Sealing detection device for movement diaphragm capsule of diaphragm gas meter

Abstract

The invention relates to a sealing detection device for a movement diaphragm capsule of a diaphragm gas meter, and relates to the technical field of diaphragm gas meter production. The sealing detection device comprises a rack, and a bearing table used for placing a movement diaphragm capsule is erected on the rack. A driving air cylinder is erected on the portion, located on the upper side of the bearing table, of the rack, a ventilation box is arranged at one end of a piston rod of the driving air cylinder, a cavity is formed in the ventilation box, and an air inlet and an air outlet are formed in the ventilation box. A sealing performance detector is erected on the rack, guide pipes are arranged between the air inlet and the sealing performance detector and between the air outlet and the sealing performance detector, and the air inlet and the air outlet are communicated with the sealing performance detector through the guide pipes. The ventilation box is provided with a detection port, and the detection port is respectively communicated with the cavity and the movement diaphragm capsule. According to the application, a movement diaphragm capsule of which the sealing performance does not meet the requirement can be prevented from being put into use, the gas is prevented from leaking from the inside of the movement diaphragm capsule, and the life and property safety of people is protected.

Description

technical field [0001] The present application relates to the technical field of membrane gas meter production, in particular to a sealing detection device for a membrane box of a diaphragm gas meter. Background technique [0002] At present, the working principle of the membrane gas meter: the gas meter uses the pressure difference during the flow of the gas in the meter body as the power, and the distribution of the gas flow is controlled by the relative position of the valve seat and the valve cover. The bellows of the gas meter is composed of two gas measuring chambers which are the same on the left and right, and each gas measuring chamber is divided into two identical small measuring chambers by a soft film. When the distributed gas enters the four small metering chambers one by one, the film is pushed to swing freely, and the movement of the film assembly drives the connecting rod mechanism through the rocker and makes the valve cover rotate to control the inflating a...

AI Technical Summary

Problems solved by technology

[0004] In view of the related technologies mentioned above, the inventor believes that there are core bellows whose sealing performance does not meet the requirements during the production process. If the core bellows that do not meet the requirements are put into use, the gas will flow from the core bellows. Internal leakage, endangering human life and property safety

Images