阅读说明：本技术 一种基于深度调峰工况下汽轮机安全性分析方法 (Steam turbine safety analysis method based on deep peak regulation working condition ) 是由 华科 高凯 李国强 朱学成 盛玉和 富学斌 孙清民 王玉喜 杜利梅 马晶妍 于 2021-06-29 设计创作，主要内容包括：一种基于深度调峰工况下汽轮机安全性分析方法,涉及汽轮机安全性领域。为解决现有技术无法对深度调峰工况下汽轮机安全性进行评估的问题。步骤一、对高位布置的汽轮机组在高的工作峰值下进行基本的安全评估；步骤二、对高位布置的汽轮机组在高的工作峰值下的所有阀门进行压力以及泄漏的监控；步骤三、对高位布置的汽轮机组在高的工作峰值下的所有管道的连接处进行监控；步骤四、对高位布置的汽轮机组在高的工作峰值下的机组内部的压强进行实时的监控；步骤五、将上述步骤二至步骤四的所有的监控值输入到计算机中,利用计算机对各各数值进行综合分析,并给出曲线。本发明适用于对深度调峰工况下汽轮机进行安全性评估。(A method for analyzing the safety of a steam turbine based on a deep peak shaving working condition relates to the field of the safety of the steam turbine. The problem that in the prior art, the safety of a steam turbine under a deep peak regulation working condition cannot be evaluated is solved. Firstly, carrying out basic safety assessment on a steam turbine set arranged at a high position under a high working peak value; monitoring the pressure and leakage of all valves of the high-position steam turbine set under a high working peak value; step three, monitoring the joints of all pipelines of the high-position arranged steam turbine set under a high working peak value; step four, monitoring the pressure inside the high-position steam turbine set under a high working peak value in real time; and step five, inputting all the monitoring values in the step two to the step four into a computer, performing comprehensive analysis on all the numerical values by using the computer, and giving a curve. The method is suitable for safety evaluation of the steam turbine under the deep peak regulation working condition.)

1. A steam turbine safety analysis method based on deep peak regulation working conditions is characterized by comprising the following steps: the specific method comprises the following steps:

firstly, carrying out basic safety assessment on a steam turbine set arranged at a high position under a high working peak value;

monitoring the pressure and leakage of all valves of the high-position steam turbine set under a high working peak value;

step three, monitoring the joints of all pipelines of the high-position arranged steam turbine set under a high working peak value;

step four, monitoring the pressure inside the high-position steam turbine set under a high working peak value in real time;

and step five, inputting all the monitoring values in the step two to the step four into a computer, performing comprehensive analysis on all the numerical values by using the computer, and giving a curve.

2. The method for analyzing the safety of the steam turbine under the deep peak shaving working condition according to claim 1, wherein the method comprises the following steps: and in the second step, all the valves are communicated with a computer through a network, and the numerical value of the real-time monitoring valve pressure is input into the computer.

3. The method for analyzing the safety of the steam turbine under the deep peak shaving working condition according to claim 1, wherein the method comprises the following steps: and in the third step, a humidity sensor is arranged at the joint of all the pipelines, the output end of the humidity sensor is connected with the humidity signal input end of the computer, and the real-time humidity signal is input into the computer.

4. The method for analyzing the safety of the steam turbine under the deep peak shaving working condition according to claim 1, wherein the method comprises the following steps: and in the fourth step, a pressure sensor is arranged in the working area of the unit, the output end of the pressure sensor is connected with the pressure input end of the computer, and a real-time pressure signal is input into the computer.

5. The method for analyzing the safety of the steam turbine under the deep peak shaving working condition according to claim 1, wherein the method comprises the following steps: in the fifth step, when the slope of the curve obtained by the computer is larger, the steam turbine unit has a factor with poor safety, the steam turbine unit should be stopped to work, and the safety of internal parts of the steam turbine unit is checked; when the slope of the curve is small, the safety of the steam turbine set is high.

Technical Field

The invention relates to the field of steam turbine safety, in particular to a steam turbine safety analysis method based on a deep peak shaving working condition.

Background

The existing turbine adopts a method of adjusting the working peak value deeply, so that the working efficiency of the turbine is improved, and an energy-saving effect can be achieved.

According to the arrangement characteristics of a high-position arrangement machine room, the length of a steam extraction pipeline directly connected with a steam turbine far exceeds that of a conventionally arranged unit, the volume of steam in the corresponding pipeline is greatly increased, when the working peak value of the steam turbine is modulated to be the highest, a large amount of steam can flow back to the steam turbine, the flying rotating speed of the steam turbine is increased, meanwhile, the maintaining time in a high rotating speed interval is long, in order to ensure the safety of the unit at the high working peak value, the safety of the steam turbine needs to be deeply analyzed, the pressure of a valve of the unit is monitored in real time, and therefore a method for evaluating the safety of the steam turbine based on a deep peak regulation working condition needs to be formulated.

Disclosure of Invention

The invention provides a method for analyzing the safety of a steam turbine under a deep peak regulation working condition, aiming at solving the problem that the safety of the steam turbine under the deep peak regulation working condition cannot be evaluated in the prior art.

The invention relates to a steam turbine safety analysis method based on deep peak regulation working conditions, which comprises the following specific steps:

firstly, carrying out basic safety assessment on a steam turbine set arranged at a high position under a high working peak value;

monitoring the pressure and leakage of all valves of the high-position steam turbine set under a high working peak value;

step three, monitoring the joints of all pipelines of the high-position arranged steam turbine set under a high working peak value;

step four, monitoring the pressure inside the high-position steam turbine set under a high working peak value in real time;

inputting all the monitoring values of the second step to the fourth step into a computer, performing comprehensive analysis on all the numerical values by using the computer, and giving a curve;

furthermore, in the second step, all the valves are communicated with a computer through a network, and the numerical value of the real-time monitoring valve pressure is input into the computer;

furthermore, in the third step, a humidity sensor is arranged at the joint of all the pipelines, the output end of the humidity sensor is connected with the humidity signal input end of the computer, and the real-time humidity signal is input into the computer;

furthermore, in the fourth step, a pressure sensor is arranged in the working area of the unit, the output end of the pressure sensor is connected with the pressure input end of the computer, and a real-time pressure signal is input into the computer;

furthermore, in the curve obtained by the computer in the fifth step, when the slope of the curve is larger, the steam turbine unit has a factor with poor safety, the steam turbine unit should be stopped to work, and the safety of internal parts of the steam turbine unit is checked;

when the slope of the curve is small, the safety of the steam turbine set is high.

Compared with the prior art, the invention has the following beneficial effects:

the invention overcomes the defects of the prior art, monitors the valve pressure, the pipeline leakage and the internal pressure of the turboset in real time, inputs the data into a computer, obtains a curve through the integration and analysis of the computer, and stops the turboset to work when the slope of the curve is larger and the turboset has the factor of poorer safety at the moment, and checks the safety of the internal parts of the turboset; when the slope of the curve is small, the safety of the steam turbine set is high; therefore, the safety of the steam turbine under the deep peak regulation working condition is evaluated.

Detailed Description

The first embodiment is as follows: the specific method of the embodiment is as follows:

firstly, carrying out basic safety assessment on a steam turbine set arranged at a high position under a high working peak value;

monitoring the pressure and leakage of all valves of the high-position steam turbine set under a high working peak value;

step three, monitoring the joints of all pipelines of the high-position arranged steam turbine set under a high working peak value;

step four, monitoring the pressure inside the high-position steam turbine set under a high working peak value in real time;

inputting all the monitoring values of the second step to the fourth step into a computer, performing comprehensive analysis on all the numerical values by using the computer, and giving a curve;

in the specific embodiment, the valve pressure, the pipeline leakage and the internal pressure of the steam turbine set are monitored in real time, the data are input into a computer, a curve is obtained through the integration and analysis of the computer, when the slope of the curve is larger, the steam turbine set has a factor with poor safety, the work of the steam turbine set should be stopped, and the safety of internal parts of the steam turbine set is checked; when the slope of the curve is small, the safety of the steam turbine set is high; therefore, the safety of the steam turbine under the deep peak regulation working condition is evaluated.

The second embodiment is as follows: in the second step, all valves are communicated with a computer through a network, and a real-time numerical value for monitoring the valve pressure is input into the computer.

The third concrete implementation mode: in the third step, a humidity sensor is arranged at the joint of all the pipelines, the output end of the humidity sensor is connected with the humidity signal input end of the computer, and the real-time humidity signal is input into the computer.

The fourth concrete implementation mode: in the fourth step, a pressure sensor is arranged in the working area of the turbine set, the output end of the pressure sensor is connected with the pressure input end of the computer, and a real-time pressure signal is input into the computer.

The fifth concrete implementation mode: in the fifth step, a curve is obtained through a computer, when the slope of the curve is larger, the steam turbine unit has a factor with poor safety, the steam turbine unit should be stopped from working, and the safety of internal parts of the steam turbine unit is checked;

when the slope of the curve is small, the safety of the steam turbine set is high.

Principle of operation

Firstly, carrying out basic safety assessment on a steam turbine set arranged at a high position under a high working peak value;

monitoring the pressure and leakage of all valves of the high-position steam turbine set under a high working peak value; all the valves are communicated with a computer through a network, and the numerical value of the real-time monitoring valve pressure is input into the computer;

step three, monitoring the joints of all pipelines of the high-position arranged steam turbine set under a high working peak value; a humidity sensor is arranged at the joint of all the pipelines, the output end of the humidity sensor is connected with the humidity signal input end of the computer, and the real-time humidity signal is input into the computer;

step four, monitoring the pressure inside the high-position steam turbine set under a high working peak value in real time; arranging a pressure sensor in the working area of the unit, connecting the output end of the pressure sensor with the pressure input end of the computer, and inputting a real-time pressure signal into the computer;

inputting all the monitoring values of the second step to the fourth step into a computer, performing comprehensive analysis on all the numerical values by using the computer, and giving a curve; according to the curve obtained by the computer, when the slope of the curve is larger, the steam turbine unit has a factor with poor safety, the steam turbine unit should be stopped to check the safety of internal parts of the steam turbine unit;

when the slope of the curve is small, the safety of the steam turbine set is high.