Gas power generation has become the focus of development in the world, which is mainly due to the environmental pollution caused by small, fast start and stop unit, high thermal efficiency advantages. But at present, China’s core gas components mainly rely on imports, resulting in greater economic losses. Therefore, how to do a good job in the safety management of gas generator sets, to avoid equipment accidents become a common topic of gas power generation enterprises.
With the development and innovation of gas turbine, as a new power equipment, it is widely used in various industries and promote its development and progress. But at the same time, the gas turbine is determined by its own characteristics, in the process of using the event of failure for maintenance, not only to invest a lot of manpower, funds, professional and technical personnel also need to check the reason, fault diagnosis and maintenance. So, for at this stage, how to effectively reduce the gas turbine fault has become an important problem to be solved, the present gas turbine fault diagnosis technology and briefly analyzed and summarized, and the corresponding diagnostic techniques were studied, in order to provide reference for the same industry.
In order to improve the quality of the environment, improve energy structure and further promote the sustainable development of China’s social economy, the relevant state departments decided to import liquefied natural gas. Therefore, the effective operation and management of gas power plant has been highly valued by the society. At present, the operation of several gas power plants in China, it faces many risks, such as natural gas leakage risk, fire risk and pollution risk.
The characteristics of two, gas power plant
At present, China’s gas-fired power plant has a main characteristic: 1. In many power generation, natural gas is the most harmful to the environment of energy, it is not only an area and a small amount of water consumption, and will not affect the forest vegetation and ecological environment. In addition, the use of natural gas power generation does not need to add new environmental protection investment, can effectively reduce the cost of environmental protection. High efficiency. Compared to the traditional coal-fired power plants, gas power plant efficiency is much higher. Up to now, the power generation efficiency has reached 55% ~ 60%. operating performance is good. Compared to the traditional coal-fired power plants, gas power unit with flexible operation, quick start, with base and can be used for peak shaving characteristics. And the maintainability is excellent. Gas fired power plant electricity rate 90% ~ 95%. and easy access to the load center. Gas power plant not only can effectively improve the level of economic operation of the power grid, but also further improve the quality of power grid operation.
Risk analysis of three, gas power plant
The stable operation of gas-fired power plant is of great significance to the sustainable development of China’s economy. Therefore, it is very important to ensure the safe operation of gas-fired power plants. Although at present our country gas power plants have taken many measures to improve the safety and stability of their own operation, but there are still some potential risks, it is highly valued managers. Potential risks include the following 3.
1 gas leak risk
Natural gas leakage is one of the most important risks in the operation of gas power plant, and it is also the biggest risk to the safe and stable operation of power plant. At present, there are many factors that lead to leakage of natural gas pipelines, such as quality and construction quality standards, valve leakage, equipment corrosion and bad Mifengbuyan, will the natural gas leak caused to a certain extent. Natural gas leakage will not only affect the normal operation of the enterprise, but also lead to staff suffocation, poisoning, in serious cases, will lead to casualties.
2 fire and explosion risk
In the process of gas power plant operation, can cause fire and explosion accidents have many factors, such as safety valve failure or the use of time is too long, the internal components of the boiler over the use, welding quality and level display failure. All these problems may lead to the occurrence of fire and explosion. Because of the particularity of gas power plant, once the fire, explosion, the loss is irreparable and
3 pollution risk
With the deepening of the concept of environmental protection, the pollution caused by environmental pollution has become one of the main risks in the development process. The environmental pollution caused by gas power plants mainly comes from the emission of dust, sulfide, nitrogen oxides and heavy metals. Among them, the small dust will adsorb sulfide and nitrogen oxides and heavy metals, resulting in PM2.5 rise, seriously affect the air quality. If things go on like this, the air quality around the plant will continue to decline, then the staff and nearby residents health caused serious influence.
Four, risk control measures
In order to improve the gas power plant operation safety and stability, promote the smooth realization of the goal of sustainable development of social economy in our country, the risk for the operation of power plant control and management from the following 3 aspects.
1 natural gas leakage risk control measures
As a result of natural gas leakage factor is more, so, in the control of the risk of natural gas, should ensure the comprehensive control measures. Specifically from the following 3 aspects:
(1) to ensure the quality of materials. Must strictly check the entry materials, once found the problem, it should be replaced in a timely manner.
(2) when the gas leakage, burning accident, should immediately cut off the power supply.
(3) pay attention to the supervision and control of construction quality. For example, the weld shall be inspected by 100%.
2 fire and explosion risk control measures
For the control of fire and explosion risk, the specific can be from the following 3 aspects:
Do a regular check on the safety valve. Once the safety valve safety problems exist, it should be replaced in a timely manner.
To ensure that the main steam system is equipped with 100% bypass system, the boiler should be set at least 2 sets of independent water level display system, and set up the water level monitoring alarm.
Combined with the actual situation of enterprise development, the establishment of a complete operating procedures. Only in this way can we effectively control the risk of fire and explosion, thus reducing the economic losses of enterprises.
3 pollution risk control measures
With the continuous improvement of people’s awareness of environmental protection, effective control of pollution risk has become one of the important work in the development of gas power plant. For the control of pollution risk, gas power plants should focus on the effective treatment of emissions, should be as far as possible to control dust, sulfur, nitrogen oxides and some heavy metal emissions. Only in this way can we effectively control the risk of pollution.
As a new type of power equipment, gas turbine has been widely concerned because of its high thermal efficiency and low pollution. With the development and innovation of science and technology, the gas turbine is used in various industries, from high-tech aerospace industry to the Department of electric power generation, as well as in the field of transportation, play an important role in gas turbine will be irreplaceable, for the national economic construction and development has a positive role in promoting. But at the same time, the gas turbine due to its complex structure, not only need to invest a lot of manpower, material and financial resources in the process of using, need more professional and technical personnel to carry out its operation, so as to effectively prevent the occurrence of safety accidents. In the process of use, once the mechanical failure occurs, it will cause incalculable serious consequences to the enterprise’s economic and property losses, and even pose a threat to the life and property safety of gas turbine operators. Therefore, the relevant departments and leaders must use the investigation and the cause of the fault of gas turbine for supervision and strict censorship, once found the problem must be handled in a timely manner, and then from the source to prevent the occurrence of safety accidents.
In summary, gas-fired power plants in China are facing many risks in the operation and development, if not effectively control the risk, it is bound to affect the development of natural gas power generation, thereby reducing the sustainability of China’s economic development. Therefore, the relevant departments must improve the degree of importance of risk control, in the comprehensive analysis of various types of risk, based on the targeted measures to solve. Only in this way can we make the natural gas power generation develop smoothly.
Statement: the public attention to the original content, and respect for the original. Reproduced WeChat such as copyright issues, please contact the small series!
China Electric Power Equipment Management Association
E-mail: [email protected]
Address: Beijing city Xicheng District Street No. 6 A1-1103
Zip code: 100053
Long press fingerprint – Identification of two-dimensional code in the drawing – attention to us
Sweep the concern of the public, WeChat
- 《人民的名义》北京开演 王晓鹰借用舞台反思人性
- HONARABAD BLUEHERONLANDING