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Method for monitoring vaporization degree of desuperheating water

A desuperheating water level technology, applied in the boiler field, can solve the problems of inability to realize the monitoring of desuperheating water vaporization, poor atomization, downstream pipeline damage, etc., so as to improve operation reliability and boiler operation safety, avoid pipeline damage, and prevent damage Effect

Active Publication Date: 2021-03-02
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that whether the existing desuperheating water is completely vaporized cannot be monitored, resulting in damage to the downstream pipeline due to poor atomization, the present invention further proposes a monitoring method for the degree of desuperheating water vaporization

Method used

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  • Method for monitoring vaporization degree of desuperheating water

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specific Embodiment approach 1

[0012] Specific implementation mode one: combine figure 1 To illustrate this embodiment, a method for monitoring the degree of desuperheating water vaporization described in this embodiment includes the following steps:

[0013] Step 1: Install dual thermocouples: the front thermocouple socket 1 and the rear thermocouple socket 2 are fixedly connected at the outlet of the desuperheater, the front thermocouple socket 1 is set directly in front of the rear thermocouple socket 2, and the front thermocouple socket 1 The front thermocouple 3 is inserted in the insert, and the rear thermocouple 4 is inserted in the rear thermocouple socket 2;

[0014] Step 2: Temperature detection: the temperature of the steam containing water droplets is measured by the front thermocouple 3, and the temperature of the steam without water droplets is measured by the rear thermocouple 4;

[0015] Step 3: Judging the degree of vaporization: According to the temperature difference between the front th...

specific Embodiment approach 2

[0017] Specific implementation mode two: combination figure 1 To illustrate this embodiment, in step 3 of this embodiment, the method for judging whether the desuperheating water is completely vaporized is as follows: the temperature measured by the current thermocouple 3 is lower than the temperature measured by the subsequent thermocouple 4 and the temperature difference between the two exceeds a predetermined value When , it means that water droplets are carried in the steam, and the desuperheating water is not completely vaporized. The undisclosed technical features in this embodiment are the same as those in the first embodiment.

[0018] Double thermocouples are compactly arranged at the outlet of the desuperheater, and the front and rear thermocouple sockets are less than a certain distance, so that the front thermocouple socket completely blocks the rear thermocouple socket, and the unvaporized desuperheating water will be sprayed on the front thermocouple socket. Due...

specific Embodiment approach 3

[0019] Specific implementation mode three: combination figure 1 Describe this embodiment, in step 1 of this embodiment, the front thermocouple socket 1 and the rear thermocouple socket 2 are coaxially arranged successively along the flow direction of the steam. The undisclosed technical features in this embodiment are the same as those in the first embodiment.

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Abstract

The invention discloses a method for monitoring vaporization degree of desuperheating water and relates to the technical field of boilers. The invention aims to solve the problem that a downstream pipeline is damaged due to poor atomization as whether existing desuperheating water is completely vaporized or not cannot be monitored. The method comprises the steps of mounting double thermocouples; detecting the temperature; and judging the vaporization degree. The method is used for monitoring whether desuperheating water is completely vaporized or not.

Description

technical field [0001] The invention relates to the technical field of boilers, in particular to a method for monitoring the vaporization degree of desuperheating water. Background technique [0002] Water spraying is often used to adjust the temperature during boiler operation. When the amount of desuperheating water is large, the desuperheating water may leave the desuperheater without being completely vaporized. Due to the thermal impact of water droplets on the downstream pipeline, the downstream pipeline is under the action of alternating cold and heat stress. , prone to fatigue cracks, and even develop to leakage. In the prior art, a thermocouple usually installed at the outlet of the desuperheater can only monitor the temperature of the steam after the desuperheater, but cannot monitor and judge whether the desuperheater water is completely vaporized. Contents of the invention [0003] In order to solve the problem that whether the existing desuperheating water is ...

Claims

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Application Information

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IPC IPC(8): F22G5/12
CPCF22G5/123
Inventor 孙洪民秦爽徐栋
Owner HARBIN BOILER