On-line high-precision acid liquor sampling system and sampling and maintaining method thereof

Abstract

The invention discloses an on-line high-precision acid liquor sampling system and a sampling and maintaining method thereof. The on-line high-precision acid liquor sampling system includes a samplingport and a circulating groove connected with the inlet end of the sampling port, and further includes a sampling acid liquor pipeline, a sampling container, a discharging mechanism and a spraying mechanism, the inlet end of the sampling acid liquor pipeline is connected with the outlet end of the sampling port, the outlet end of the sampling acid liquid pipeline is arranged in the sampling container, a first sampling valve and a second sampling valve are further arranged on the sampling acid liquid pipeline, a grid plate is erected in the sampling container, the grid plate is used for placingsampling cups, a sampling door is arranged on one side face of the sampling container, the bottom of the sampling container is provided with a discharging port, the discharging port is connected withone end of the discharging mechanism, the other end of the discharging mechanism is connected with the circulating groove, and the spraying end of the spraying mechanism is arranged in the sampling container. According to the on-line high-precision acid liquor sampling system and the sampling and maintaining method thereof, the work efficiency of staff on site can be improved, potential safety hazards in acid liquor sampling operation are eliminated, and meanwhile, not only can the acid liquor waste phenomenon during sampling operation be avoided, but also the operation environment on site canbe improved.

Description

technical field [0001] The invention relates to metallurgical machinery / substrate pickling technology, more specifically, to an online high-precision acid sampling system and its sampling and maintenance methods. Background technique [0002] The FCL unit for continuous annealing of oriented silicon steel in iron and steel enterprises has a pickling production process. In the actual production process, the acid solution needs to be sampled for inspection and testing, so as to ensure that the production process of the unit is effectively controlled. [0003] Such as figure 1 As shown, the existing acid liquid sampling port 1 is arranged on four return main pipes in the acid liquid line tank 2, and the diameter of the general sampling pipe is far smaller than the pipe diameter of the return pipe (about 1 / 4 times), so When the sampling hand valve 3 is opened, the flow rate of the acid solution on the sampling pipeline cannot be accurately controlled. Because the pickling solu...

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Problems solved by technology

[0003] like figure 1 As shown, the existing acid liquid sampling port 1 is arranged on four return main pipes in the acid liquid line tank 2, and the diameter of the general sampling pipe is far smaller than the pipe diameter of the return pipe (about 1 / 4 times), so When the sampling hand valve 3 is opened, the flow rate of the acid solution on the sampling pipeline cannot be accurately controlled

Because the pickling solution has harmful characteristics such as corrosion, scalding, and high toxicity, and the sampling port 1 and its position layout are not conducive to the sampling work of the operators, and the operators take samples very frequently in the actual production process, so there are still the following problems Deficiencies in several aspects:

[0004] 1. During sampling operations, operators need to wear protective equipment such as protective glasses, acid-proof overalls, and acid-resistant gloves to avoid harm to the human body caused by acid splashes. a major safety hazard;

[0005] 2. The acid liquid sampling port is located on the concentrated return pipe of each pickling line tank. It is difficult to manually sample directly from the pipe. Due to the height difference, the acid liquid flows out of the sampling port quickly and easily. acid spilled;

[0006] 3. If the residual acid liquid in the sampling port is not discharged cleanly every time when sampling, the actual concentration of the online sampling will be inaccurate, which will greatly affect the stability of the production process of the unit. If the sampling valve is directly opened to discharge and then sample, it will lead to Waste acid and affect the working environment on site, which is extremely unfavorable to cost control and on-site environmental protection work;

[0007] 4. Since the acid liquid has more fine particles such as magnesium oxide particles and iron oxide scales when cleaning the steel strip substrate during the recycling process, the acid liquid sampling pipeline is prone to fouling and blockage, resulting in unsmooth online sampling operations

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