Probe ageing test device and method for three-electrode conductivity sensors

[0043] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0044] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0045] The present invention relates to a three-electrode conductivity sensor probe aging test device such as figure 2 As shown, it includes control box 12, probe connection line 13, support column 14, suction pump 6, first normally closed electric valve 1, second normally closed electric valve 2, third normally closed electric valve 3, fourth normally closed electric valve Valve 4, fifth normally closed electric valve 5, pipeline connecting pipe 11, fresh water tank 8, sea water tank 7, probe fixing block 9, fixing block supporting plate 10, and probe connecting hose 15 are composed.

[0046] The rectangular seawater tank 7 and the rectangular freshwater tank 8 are installed side by side for placing seawater and fresh water respectively; 5 normally closed electric valves and suction pumps 6 are respectively installed on the rectangular flat plates behind the seawater tank 7 and the freshwater tank 8 to realize Injection and discharge of seawater and freshwater inside a plurality of conductivity probes 16, five normally closed electric valves, suction pump 6, seawater tank 7 and freshwater tank 8 are connected together by pipeline connection pipe 11. For the specific connection sequence, see image 3.

[0047] The control box 12 is installed directly above the plate behind the water tank through four support columns 14, and is used to realize the control of the normally closed electric valve and the suction pump 6 and the supply of alternating current to the conductivity probe 16; the rectangular fixed block supporting plate 10 is installed on the Directly above the seawater tank 7 and the fresh water tank 8, it is used for placement of the conductivity probe 16; the probe fixing block 9 is installed above the fixing block supporting plate 10 to fix the conductivity probe 16; the probe connection line 13 is located in the control box The bottom of 12 is used to connect conductivity probe 16, and applies alternating current to the probe.

[0048] When a kind of three-electrode conductivity sensor probe aging experimental device related to the present invention is working, the installation position of conductivity probe 16 is as follows: Figure 4As shown, first fix a plurality of conductivity probes 16 to the fixed block support plate 10 through the probe fixing block 9, then connect the conductivity probes 16 in sequence through the probe connecting hose 15, and connect the conductivity probes 16 to seawater , Fresh water control pipeline. After the pipeline is connected, connect the probe connection line 13 with the conductivity probe 16 . After the probe connection line 13 is connected, the control box 12 opens the first normally closed electric valve 1 and the second normally closed electric valve 2, starts the suction pump 6, and the suction pump 6 absorbs the seawater in the seawater tank 7, so that the seawater fills the entire conductivity probe 16. The excess seawater flows into the seawater tank 7 again. After the seawater is filled with the conductivity probe 16, the control box 12 closes the first normally closed electric valve 1 and the second normally closed electric valve 2, so that the seawater remains inside the conductivity probe 16, and then the control box 12 provides the conductivity via the probe connection line 13. The probe 16 applies an alternating current. After one cycle of aging time is over, the control box 12 cuts off the alternating current applied to the conductivity probe 16, opens the third normally closed electric valve 3 and the fourth normally closed electric valve 4, starts the suction pump 6, and the suction pump 6 sucks the fresh water tank The fresh water in the tank 8 makes the fresh water fill the inside of the conductivity probe 16 and flush the inside, and the excess fresh water will flow into the fresh water tank 8 again. After the fresh water rinses the conductivity probe 16, close the suction pump 6, then the control box 12 closes the third normally closed electric valve 3, opens the fifth normally closed electric valve 5, restarts the suction pump 6, and the suction pump 6 sucks air, so that the air is discharged Fresh water inside the conductivity probe 16. After the fresh water is removed, the control box 12 closes the fourth normally closed electric valve 4, the fifth normally closed electric valve 5 and the suction pump 6, and after standing for a period of time, the aging test enters the next cycle.

[0049] Through the above process, the automatic and precise control of the aging experiment process of the conductivity sensor probe is realized, and the aging experiment of multiple conductivity probes is carried out at the same time, which reduces the labor cost of the aging experiment and improves the consistency of the aging experiment.

[0050] The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.