A kind of air tightness detection method of FRP septic tank

Abstract

The invention discloses a glass fiber reinforced plastic septic tank airtightness detection method. One end of a water column pipe with scales is vertically fixed in an enclosed water tank to form a water column instrument, the water column instrument, an air pump and a glass fiber reinforced plastic septic tank are connected, the airtightness of the glass fiber reinforced plastic septic tank is detected through an air differential pressure method, the inner wall of the water column pipe is provided with a water level sensor connected with a digital display meter, and the digital display meter is connected with a data collector. Values on the digital display meter are acquired every first preset time, the absolute values of differences between the values and a first preset water level value are first real-time water level deviation, a first accumulated water level deviation is defined as an average value of i first real-time water level deviations within i first preset time, when the first accumulated water level deviation is within a predefined first threshold value, it is determined that the glass fiber reinforced plastic septic tank does not leak air, and otherwise, it is determined that the air is leaked. The glass fiber reinforced plastic septic tank airtightness detection method reduces the workload of examination personnel and improves the precision and the work efficiency.

Description

technical field [0001] The invention relates to a method for detecting the airtightness of FRP products, in particular to a method for detecting the airtightness of FRP septic tanks. Background technique [0002] Generally, container products used to hold liquids need to undergo leak detection before leaving the factory. Conventional air tightness testing methods generally include water immersion method, water injection method, and foam method. For air tightness testing of smaller products, It can be inflated and immersed in the water tank for leak detection, or product water injection method or foam method for leak detection. For larger and heavier products, such as fiberglass septic tanks, the above method will have cumbersome operations, waste of water, and low efficiency. and poor precision. Contents of the invention [0003] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages as will b...

AI Technical Summary

Problems solved by technology

[0002] Generally, container products used to hold liquids need to undergo leak detection before leaving the factory. Conventional air tightness testing methods generally include water immersion method, water injection method, and foam method. For air tightness testing of smaller products, It can be inflated and immersed in the water tank for leak detection, or product water injection method or foam method for leak detection. For larger and heavier products, such as fiberglass septic tanks, the above method will have cumbersome operations, waste of water, and low efficiency. and the problem of poor precision

Images