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CN-224216361-U - Trace moisture measuring device for oil products

CN224216361UCN 224216361 UCN224216361 UCN 224216361UCN-224216361-U

Abstract

The utility model belongs to the technical field of electric oil insulation performance detection, and discloses an oil trace moisture measuring device which comprises a detection component and a sampling bottle, wherein the sampling bottle is internally provided with the sampling component, the sampling component comprises a sampling cavity, the sampling cavity is arranged in the sampling bottle and is communicated with the sampling bottle through a pipeline, a driving unit is used for driving the sampling cavity to circumferentially rotate, one end of the sampling tube is arranged in the sampling cavity and is positioned in a rotation central axis of the sampling cavity, and the free end of the sampling tube passes through the sampling cavity and is communicated with the detection component.

Inventors

  • JIANG LUHAI
  • WANG XIN

Assignees

  • 新疆鑫顺然电力科技有限公司

Dates

Publication Date
20260508
Application Date
20250422

Claims (10)

  1. 1. The utility model provides an oil trace moisture survey device, includes quick-witted case and locates the detection component of quick-witted incasement, its characterized in that still includes the sample bottle, be equipped with the sample subassembly in the sample bottle, the sample subassembly includes: The sampling cavity is arranged in the sampling bottle and is communicated with the sampling bottle through a pipeline; The driving unit is used for driving the sampling cavity to circumferentially rotate; The sampling tube, in the sampling cavity was located to the one end of sampling tube, and be located the rotatory axis of sampling cavity, the free end of sampling tube passes sampling cavity, and with the detection component intercommunication.
  2. 2. The trace moisture measuring device for oil products according to claim 1, wherein the driving unit comprises a motor and a driving wheel, an output shaft of the motor is fixedly connected with the driving wheel coaxially, the sampling chamber is provided with a driven wheel, and the driving wheel is connected with the driven wheel through a belt.
  3. 3. The trace moisture measuring device for oil products of claim 2, wherein the sampling bottle is provided with a liquid inlet, the liquid inlet is communicated with a pipeline, the free end of the pipeline is arranged in the sampling cavity, the outer wall of the pipeline is attached to the inner wall of the sampling cavity, and the free end of the pipeline is extended to the bottom of the sampling cavity.
  4. 4. The trace moisture determination apparatus for oil products according to claim 3, wherein said sampling tube comprises a first sampling tube and a second sampling tube, one end of said first sampling tube passes through the sampling chamber and is communicated with the detection assembly, said first sampling tube is provided with a first sampling port, one end of said second sampling tube is arranged in the free end of the first sampling tube, said second sampling tube is a flexible second sampling tube, the free end of said second sampling tube is provided with a floating plate, and said second sampling tube is provided with a second sampling port.
  5. 5. The oil trace moisture measuring device according to claim 4, wherein the first sampling port and the second sampling port are of wedge-shaped structures, sealing balls for sealing the first sampling port and the second sampling port are arranged in the first sampling port and the second sampling port, the sealing balls are connected with springs for resetting the sealing balls, and the oil trace moisture measuring device further comprises sampling units communicated with the first sampling pipe.
  6. 6. The trace moisture measuring device for oil products of claim 5, wherein the sampling unit comprises a pressing pump and a first driving disk, the first driving disk is coaxially and fixedly connected with the driven wheel, the first driving disk is provided with a bump for pressing the pressing pump, a liquid inlet end of the pressing pump is communicated with the first sampling tube, and a liquid outlet end of the pressing pump is communicated with the detection assembly.
  7. 7. The trace moisture measuring device for oil products of claim 6, further comprising a defoaming assembly arranged in the sampling bottle, wherein the defoaming assembly comprises an exhaust pipe and an exhaust pump, the exhaust pipe is communicated with the sampling cavity, an air inlet end of the exhaust pump is communicated with the exhaust pipe, an air outlet end of the exhaust pump is arranged outside the sampling bottle, the driving wheel is coaxially and fixedly connected with a second driving disc, and the second driving disc is provided with a knocking block for pressing the exhaust pump.
  8. 8. The oil trace moisture measuring device according to claim 7, wherein the second driving plate is provided with a first groove, the knocking block is slidably arranged in the first groove, the knocking block is connected with a tension spring, the free end of the tension spring is fixedly connected with the first groove, the first driving plate is provided with a second groove, the protruding block is slidably arranged in the second groove, the protruding block is connected with a pressure spring, the free end of the pressure spring is fixedly connected with the second groove, the knocking block slides to the limit position to be in contact with the air pump, and the protruding block slides to the limit position to be staggered with the pressing pump.
  9. 9. The trace moisture measuring device for oil products of claim 8, wherein the first groove and the second groove are respectively provided with a chute, and the protruding block and the knocking block are respectively connected with the chute in the first groove and the chute in the second groove in a sliding way.
  10. 10. The apparatus for measuring trace moisture in oil products as set forth in claim 9, wherein the air inlet end and the air outlet end of the air pump are provided with one-way valves.

Description

Trace moisture measuring device for oil products Technical Field The scheme belongs to the technical field of electric insulating oil performance detection, and particularly relates to an oil trace moisture determination device. Background Referring to the background art of the prior publication No. CN109060953A, the quality of the electrical insulating oil performance is directly related to the safe operation and service life of the electrical equipment. Taking transformer insulating oil as an example, the content of trace moisture in the transformer insulating oil is one of the main factors affecting the insulating strength of oil products. By detecting the moisture content in the transformer insulating oil, the insulation strength of the transformer insulating oil can be prevented from being reduced to a dangerous level, and the overall insulation condition of the transformer can be evaluated. The device comprises an oscillation frequency counter, an oil sample constant temperature detection cavity and a crystal oscillator, wherein a hydrophilic coating is coated on the surface of the crystal oscillator, the crystal oscillator is arranged in the oil sample constant temperature detection cavity and used for generating oscillation frequency and transmitting the oscillation frequency to the oscillation frequency counter, the oil sample constant temperature detection cavity is internally provided with the crystal oscillator and used for containing electric insulation oil, and the oscillation frequency counter is connected with the crystal oscillator and used for recording oscillation frequency generated by the crystal oscillator and acquiring electric insulation oil content according to the change of the oscillation frequency generated by the crystal oscillator. For example, the insulating oil moisture detection device detects the moisture content in the insulating oil through a crystal oscillator and an oscillation frequency counter. However, during operation of the transformer, metal ions generated by mechanical wear (such as tap changer contact motion friction, oil pump wear), contact erosion due to arc discharge, and aging of insulating materials or reaction of corrosive sulfides with metal parts are mixed in the insulating oil. The metal particles can interfere with moisture detection, on one hand, the metal particles have conductivity, are easy to polarize in an electric field to form a conductive small bridge, so that local electric field distortion is caused, the electric field distribution on the surface of the crystal oscillator can be possibly changed, the adsorption property of the hydrophilic coating on moisture is offset, on the other hand, the metal particles (especially copper and iron particles) can change the oil-water phase equilibrium state, and the frequency change detected by the crystal oscillator not only reflects the moisture content, but also contains dielectric parameter abnormality caused by the metal particles. Disclosure of utility model The purpose of this scheme is to provide an oil trace moisture survey device to solve the problem that metal particles caused the testing result deviation in the transformer insulating oil. In order to achieve the above-mentioned purpose, this scheme provides an oil trace moisture survey device, including quick-witted case and locate the detection component of quick-witted incasement, its characterized in that still includes the sample bottle, be equipped with the sample subassembly in the sample bottle, the sample subassembly includes: The sampling cavity is arranged in the sampling bottle and is communicated with the sampling bottle through a pipeline; The driving unit is used for driving the sampling cavity to circumferentially rotate; The sampling tube, in the sampling cavity was located to the one end of sampling tube, and be located the rotatory axis of sampling cavity, the free end of sampling tube passes sampling cavity, and with the detection component intercommunication. The principle and the effect of the scheme are that by arranging the rotatable sampling chamber, the driving unit is utilized to drive the oil sample to circumferentially rotate, so that metal particles with higher density migrate to the outside of the chamber under the action of centrifugal force, and the sampling tube positioned on the central axis of rotation only extracts insulating oil in the central area with extremely low content of the metal particles and conveys the insulating oil to the detection assembly, thereby physically separating metal interferents before detection, eliminating the electric field distortion or dielectric parameter interference of the metal interferents on sensors such as crystal oscillator and electrodes, improving the accuracy of trace moisture detection, and being particularly suitable for transformer oil sample scenes (such as oil after arc discharge) with serious metal pollution. Further, the driving unit comprises a motor and a dri