Auxiliary device for degassing sampling and instrument calibration of cold water in phase modifier

Abstract

The invention discloses an auxiliary device for degassing sampling and instrument verification of cold water in a phase modifier, and relates to the technical field of analysis sampling of cold waterin a phase modifier. The auxiliary device comprises a buffer tank, wherein the side wall of the buffer tank is communicated with a water inlet pipe and a water outlet pipe, a water inlet of the waterinlet pipe is connected with a multifunctional joint through a joint fixing seat, and a sampling valve is arranged at a water outlet of the water outlet pipe; a heating degassing device and a coolingdevice are positioned between the buffer tank and the sampling valve and are sequentially communicated with the water outlet pipe; and an exhaust pipe with an exhaust valve is arranged at the top of the buffer tank. Adaptive connection between the buffer tank and the sampling pipeline of the water-cooled phase modifier is realized through the multifunctional joint, the multifunctional joint is clamped by the fixing clamp to ensure the connection tightness, the buffer tank can effectively improve the flow stability of sample water and reduce the impact caused by unstable water flow, and the exhaust pipe can effectively exhaust gas in the sample water, so the instability of PH and dissolved oxygen of the sample water caused by gas entering the sample water is avoided, the accuracy of a monitoring result is improved, and the verification effect is improved.

Description

technical field [0001] The invention relates to the technical field of analysis and sampling of cooling water in a condenser, in particular to an auxiliary device for degassing and sampling cold water in a condenser and instrument calibration. Background technique [0002] The water-cooled condenser is a synchronous motor in a special operating state, which is widely used in converter stations. The conductivity meter, dissolved oxygen meter, pH meter and other on-line monitoring instruments used with the water-cooled condenser have high precision, especially when measuring pH and dissolved oxygen, the fluctuation of the measured value will directly affect the accuracy of the result. In order to ensure the accuracy of the monitoring data, the water-cooled condenser not only needs to use desalted water with low impurity content as the internal cooling water replenishment, but also requires the operation and maintenance personnel and testing personnel of the condenser to regula...

AI Technical Summary

Problems solved by technology

[0004] 1. The sampling pipe of the cold water sampling port in the water-cooled condenser is usually vertically downward and the distance between the ground platform is small, so that the sampling bottle cannot receive the sample water, and the sample water must be led out through the conversion tube. The sampling ports and sampling pipes corresponding to the various monitoring instruments have different calibers and forms, and the uniformity is poor, which leads to the inability of the connecting pipes to be well adapted to the sampling pipes, which in turn leads to air intake and leakage of the sample water, and the gas entering the sample water will cause The instability of the pH and dissolved oxygen of the sample water, which contains carbon dioxide from the air, will also lead to changes in the conductance, pH and dissolved oxygen of the sample water, affecting the accuracy of the measurement results, and even affecting the normal operation of the measurement;

[0005] 2. The purity of the cooling water in the water-cooled condenser is relatively high, so the accuracy of its PH measurement is also high, but the unstable flow rate of the test sample water in the flow process will have an impact on the monitoring instrument, resulting in unstable junction potential , so that the pH measurement is not stable and accurate;

[0006] 3. The water-cooled condenser needs to flush the sampling pipe with flushing water before sampling, and the flushing water needs to be discharged into the sewage pipe with a long distance. However, due to the inconsistent hole diameter of the sampling pipe, it is difficult to discharge the flushing water through a general-purpose temporary pipe, and only a bucket can be used. It is time-consuming and labor-intensive to receive the goods and transfer them manually

[0013] However, this existing technology does not solve the problem of adapting the water inlet to different types of sampling pipes, and at the same time, the device cannot eliminate the influence of soluble gas in the water sample before degassing on the instrument calibration results

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