Double-sided needle sampling device

• Main Authors: CHENG XIAO, CHENG WEN, LIU JUNZHI, YU LIMEI, ZHANG LINGJIA, XU TONG, CHENG XIANLING
• Format: Patent
• Language: Chinese; English
• Published: 16.10.2018
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to a double-sided needle sampling device structure design, especially relates to a double-sided needle sampling device suitable for analysis of electrical power system transformer oil, and belongs to the technical field of analysis testers. The device has advantages of convenience and flexibility in operation and use, convenience, simplicity and firmness in double-sided needle fixation, convenience in control of the exposed lengths of two ends of a double-sided needle, simple structure, easiness in manufacturing, improvement of the accuracy of double-sided needle sampling, and improvement of the efficiency of double-sided needle sampling. The integral structure of the double-sided needle sampling device (17) is shown in figure 5, and is characterized in that an outerscrew (12) of a fixed handle is screwed into a transverse screw hole (5) of a main needle sleeve (1), a positioning sleeve (10) is screwed into an outer screw thread (4) of the main needle sleeve (1),and an inner screw thread