On May 17, 2016, Beijing Leiming Cyber Electromechanical Technology Co., Ltd. successfully developed the principle prototype of the HACM-10 type high-pressure water flow sand content monitoring instrument and the principle prototype of the HACM-35 type mixed sand tank sand quantity monitoring instrument. They also conducted trial verifications on the prototypes at the Huairou R & D base. The verification tests confirmed that the prototypes achieved the expected results. 

The HACM-10 high-pressure water flow sand content monitoring instrument and the HACM-35 sand quantity monitoring instrument for mixed sand are mainly applied in the field of pre-mixed abrasive jet cold cutting. The pre-mixed abrasive jet is a grinding media water suspension jet with water and abrasive as the working medium. Its cutting efficiency is 2 to 5 times that of the common high-pressure water cutting equipment available on the market. It can achieve high-power cutting with a lower water pressure (40 Mpa or less). Jet cold cutting on the seabed and underwater can only use the supply of pre-added abrasive. Its application is widely used in marine engineering. Currently, the pre-mixed abrasive jet has not yet reached the stage of industrial promotion and application due to problems such as uniform and continuous supply of abrasive and nozzle lifespan. 

The HACM-10 high-pressure water flow sand content monitoring instrument and the HACM-35 sand quantity monitoring instrument for mixed sand can effectively solve the problem of continuous material supply by the pre-mixed abrasive jet. This measurement system, in combination with the automatic material supply switching system of the pre-mixed abrasive water jet equipment developed by our company, as well as the abrasive concentration control system and wear-resistant nozzle technology of the pre-mixed abrasive water jet equipment, will perfectly address the issues existing in the pre-mixed abrasive jet, promoting the popularization and application of the pre-mixed abrasive jet technology in marine engineering.