Quick boron applying device for boron-coated tank of boron-coated neutron detector and working method thereof

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] like figure 1 Shown is an embodiment of the general structure of the present invention. Put the coupling screw 3 on the small sealing ring 15, screw it with the positive electrode core 14, pass through the center hole of the end compression disc 8, and squeeze the end compression disc by screwing with the compression ring 6 8. Form a seal on the inner ring at the left end of the axial direction, and then put the boron-coated liner 11 on the positioning locking ring 9 and the large sealing ring 10 in sequence, coordinate with the end pressure plate 8 for positioning, and squeeze and tighten with the fixed long screw 7. Form the axial left end outer ring seal. Install the output screw 16 on the right end of the positive electrode core 14, rotate the axis to the vertical direction, pour the boron-coated solution 13 into the cavity, put the positioning locking ring 9 on the boron-coated liner 11 first, and seal the large ring 10 , The positive electrode core 14 is then covered with a small sealing ring 15, the end compression disc 8, and the compression ring 6 are assembled from the inside to the outside to form an axial right end seal. Rotate the axis to the horizontal direction, the shaft coupling screw 3 at the left end passes through the bearing 5 assembled on the base 4, and is connected with the stepping motor 1 on the base 4, and the output screw 16 at the right end of the shaft passes through the assembly on the base The bearing 5 on the 4 is connected as one.

[0029] like figure 2 As shown, it is the electrical relationship diagram of the present invention, the graphite brush 12 is close to the outer wall of the boron-coated liner 11, the wire contacts are conductive, and the negative electrode is loaded, and the terminal clip 17 is installed on the right side base 4, and the right side base, The bearing, the output screw 16, and the positive electrode core 14 are all metal conductors, which conduct electricity in series and load the positive electrode. Under the action of the loaded positive and negative electrode voltages, the boron complex in the boron coating solution 13 will flow from the positive electrode to the negative electrode. Electrode deposition and precipitation.

[0030] like image 3 As shown, it is the schematic diagram of the boron coating of the present invention, the stepping motor 1 drives the whole device to rotate, the boron complex in the boron coating solution 13 is simultaneously subjected to the rotating centrifugal force and the reaction force of the inner wall of the boron coating liner 11, fully suspended and mixed evenly , load a DC power supply to form positively charged boron complex particles, under the action of an electric field, they will move to the inner wall of the negative electrode boron-coated liner, deposit and precipitate on the inner wall of the boron-coated liner 11, forming a boron film with uniform thickness.

[0031] like Figure 4 Shown, is the control program figure of the present invention, comprises the following steps:

[0032] (1) The PLC control box controls the photoelectric colorimeter installed at the end pressing plate to measure the concentration C0 of the boron coating solution;

[0033] (2) The PLC control box controls the speed of the stepping motor, the speed of the stepping motor is normal, the boron complex is fully suspended and mixed in the boron solution, the speed is 5 r/min, and the running time is 3 min; Uneven mixing, feedback to PLC, re-set speed;

[0034] (3) Preheat the boron coating solution for 2 minutes until the solution is fully mixed;

[0035](4) The PLC control box controls the DC power supply, loads a DC voltage of 100 V, and the current is normal. The boron complex interacts with the inner wall of the boron-coated liner to form a boron film. The electrolysis time is recorded for 5 minutes. The current is abnormal, and the electrophoresis phenomenon is not obvious or directly Interact with the substrate, feed back to the PLC, and reload the voltage;

[0036] (5) The PLC control box controls the temperature sensor installed in the boron-coated liner, and sets the temperature limit for the boron complex to adhere to the inner wall of the boron-coated liner as Tmax. Boron solution concentration C1, cut off the DC power supply, when T≥Tmax, the temperature sensor alarms, feeds back to the PLC, and reloads the voltage;

[0037] (6) Calculate the boron coating thickness δ=K×(C0-C1) according to the measurement record data, where K= , M is the quality of the boron-coated solution, d is the inner diameter of the boron-coated liner, is the boride density.

[0038] The content not described in detail in this specification belongs to the prior art known to those skilled in the art.