Jiangsu Institute of Metrology Automatic Weighing Apparatus Type Evaluation Test System developed acceptance

The development of China Instrument Network Instrumentation for 10 years is the transformation of the youth. It is the flourishing of the tree and the result of a scientific research project.

In March 2018, the Science and Technology Planning Project of the State Administration of Quality Supervision, Inspection and Quarantine of the Jiangsu Academy of Metrology Sciences under the State Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) developed the "Automatic Weighing Apparatus Type Evaluation and Detection System" (General Administration of Science and Technology Project Number: 2010QK171). After 10 years, the research results of the project have filled the international gap and the overall technology has reached the international advanced level. The acceptance team consisted of 7 experts from the China Academy of Metrology, China Weighing Instrument Association, and China National Testing Technology Research Institute. The former president of the China Academy of Metrology Sciences, Germany's PTB visiting professor Zhao Kegong served as the team leader, and the China Weighing Apparatus Association Liu Xiaohua. Long served as deputy leader.

Solidly drilled to take root

In May 2008, the State Administration of Quality Supervision, Inspection and Quarantine approved (Quality Inspection Letter [2008] No. 287) and agreed that the Jiangsu Provincial Institute of Metrology prepares to establish the "National Automatic Weighing Apparatus Type Evaluation Laboratory", which is a scientific study for Jiangsu Province The automatic evaluation of the hospital automatic weighing instrument, especially continuous accumulative automatic weighing instrument (belt scale), raises new and higher requirements.

The Institute of Metrology Science of Jiangsu Province immediately established the Automatic Weighing Laboratory to establish a leading group and research project team. The Dean personally took the position of team leader and vice president to participate in the implementation. The research institute has organized several technical staff to conduct full-time investigations in weighing companies, user units and scientific research institutes throughout the country for nearly 2 years. During this period, senior experts and automatic weighing standards and procedures from institutions such as Weighing Instrument Association, National Professional Technical Committee, Technical Institutions and Design Institutes were invited. The drafters of the specifications conducted several project arguments in Shanghai and Nanjing to listen to opinions and suggestions. Based on a comprehensive consideration of market demand, technological capabilities, and research and development level, the Jiangsu Academy of Metrology applied to the General Administration of China in 2010 to apply for the “Automatic Weighing Apparatus Type Evaluation and Detection System Development” technology project project approval and approval. The goal is to electronic The research on variable angle test of belt roller and belt feeding roller for belt weigher and dosing scale, detection and recurrence of influencing factors, and unintervention operation of test process were conducted. An automatic weighing instrument type evaluation and detection system was built.

During the research process, the project focused on addressing the following eight key technical issues: traceability of 10.2 belt weighers; 2 material test capability for large test flow of 7200 t/h; 3 realization of 11 different belts and multiple belt speeds The belt weigher carries out the type evaluation test; 4 It realizes the durability test of the belt weigher under the laboratory conditions; 5 It greatly improves the test efficiency, and the test process is efficient and reliable; 6 It realizes the control of the influencing factors such as the belt tension, belt deviation and sag. With the reproduction; 7 eliminate the impact of human factors on the test results, to achieve automation of the test process; 8 custom test materials, to solve the problem of dust, broken, should not be stacked, low density and other problems.

The site is further

The promotion of the project is inseparable from the construction of a new base of the provincial metrology institute. According to the final project design scheme, the automatic weighing device type evaluation and detection system is mainly composed of test belts, conveyor belts, control weighing devices, weights, storage hoppers, motors, frequency converters, servers, etc., and it needs to be installed at a length of about 80m and a width of about 40m. In a single laboratory with a height of about 22m, the weighing hopper needs to be located in a negative 8m underground chamber. The original site of the provincial metrology institute has no space. The Jiangsu metrology institute has selected several sites. Finally on March 28th, 2010, the new base was laid at 95 Wenyu Road, Qixia District, Nanjing City, covering an area of ​​72 acres and the national automatic weighing device. Type evaluation laboratory is listed as No. 1 project.

The new completion of this site has provided more favorable conditions for the promotion of the project. At the end of 2014, Jiangsu Province Institute of Metrology completed the overall relocation to the new base. In 2015, the automatic weighing apparatus type evaluation and inspection system also completed the installation and commissioning. In August 2015, the automatic weighing apparatus type evaluation laboratory of the Jiangsu Academy of Metrology Sciences passed AQSIQ's assessment team conducted an on-site assessment. In October 2015, it was authorized by the General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) (Jiangsu) to carry out automatic weighing instrument type evaluation tests nationwide and the project results were put into use.

After the completion of the system, the German Federal Institute of Physics (PTB), the British Institute of Physics (NPL), the National Institute of Metrology (NMISA), the Chinese Institute of Metrology (NIM), Ilmenau University of Technology (TUIL), UK Many leaders and experts from the National Metrology and Legal Affairs Office, China University of Metrology and other units visited the Jiangsu Academy of Metrology Science to visit the site and highly recognize and affirm the system.

Filling blank flowering results

The project “Automatic Weigher Type Evaluation and Detection System Development” was accepted by the project. The acceptance team experts agreed that the project first proposed and adopted advanced automatic quantitative control, belt running status parameter measurement and control, automatic measurement and control of experimental data, and remote transmission and monitoring of experimental conditions. The technology developed a continuous cumulative automatic weighing instrument (belt scale) detection system with the most complete experimental bandwidth (400mm to 2400mm), highest accuracy grade (0.2 grade), and maximum experimental flow (7200t/h), which fills the international gap and promotes The highest accuracy level in the OIML R50 "Continuously Accumulated Automatic Weighing Scale (Belt)" international recommendation has been increased from 0.5 to 0.2. The research and development of the belt tension and horizontal force, belt groove angle, roller movement and turbulence and other influencing factors of the measurement and control technology, to achieve a simulation of the belt scale field conditions, established the only international continuous automatic weighing instrument (belt scale ) Perform a full-performance experimental system including a durability test.

The project has been granted 3 invention patents and 1 utility model patent, and has completely independent intellectual property rights. After the results were put into use, nearly 100 batches of belt weigher type evaluations and inspections have been completed. The system operation is stable, and all technical indicators are better than the requirements of the project task book. It provides technical support for the domestic belt weigh scale products to achieve a level 0.2 international certification. It has effectively promoted the upgrading of industrial technology, has remarkable social and economic benefits, and has a good prospect of popularization and application.

From the “budget” of 2008 to the “results” of 2018 and the fruits of the scientific research project of “development of automatic weighing apparatus type evaluation and detection system”, it is the adherence of the pragmatic and pragmatic people of Jiangsu Metrology, and it is the hard work of all project team members. The year-by-day immersive study reflects the spiritual value of the "Indubitable and Quantitative" of Jiangsu Institute of Metrology. The Jiangsu Academy of Metrology did not meet the status quo and stopped. The successful acceptance of the project will become a new starting point and opportunity. The Jiangsu metrology personnel will certainly not forget the beginning of the heart, move forward, and then climb the peak to provide efficient product testing. Service, laying the foundation for the development of the country and even the global industry!

(Original Title: Bao Jianfeng's Grinding and Mei Huaxiang's Adversity - The Automatic Weighing Instrument Team of the Jiangsu Academy of Metrology Sciences has filled the international blank after 10 years)