Gas turbine air intake filter element anti-moisture and anti-icing device using box ventilation heat

Abstract

The utility model relates to gas turbine technical field, concretely relates to a kind of gas turbine intake filter element anti-moisture and anti-icing equipment using box ventilation heat;The design utilizes the hot air vented by box body itself as heat source, without additional consumption air ejector, steam, hot water or electric power;Three-way baffle valve set at the air outlet of exhaust fan, under the control of controller according to outdoor temperature and humidity sensor and indoor temperature and humidity sensor signal, can accurately adjust hot air introduction amount, avoid unscientific heating amplitude;Not completely closed workshop surrounds gas turbine and air source, through the full opening, half opening or full closing state of two big doors, adapt to different atmospheric temperature conditions, and three-way baffle valve is powered off when one air outlet is fully open and directly connected with atmosphere, not dependent on gas turbine suction port, steam or hot water heat source and additional station electric capacity, solve the basic condition that many users do not have on the basis of original equipment to carry out anti-moisture and anti-icing reconstruction.

Description

Technical Field

[0001] This utility model relates to the field of gas turbine technology, and in particular to a gas turbine intake filter element moisture-proof and anti-icing device that utilizes the heat generated by the ventilation of the casing. Background Technology

[0002] For gas turbines operating in cold or humid regions, moisture and ice prevention of the intake filter is crucial. Currently, standards have been established for gas turbine intake anti-icing devices. These standards stipulate that the intake air of the gas turbine can be heated by compressor extraction, electric heating, steam, or hot water, which can prevent ice or moisture blockage of the gas turbine intake filter to a certain extent, ensuring the normal operation of the gas turbine under specific climatic conditions and improving the applicability and reliability of the gas turbine in complex environments.

[0003] However, the above devices or standards have many shortcomings. On the one hand, they only consider the anti-icing at the gas turbine inlet, without considering the moisture protection of the inlet filter. On the other hand, they all use compressors to extract air, or steam, hot water, or electricity to heat the inlet air, resulting in unscientific boundary conditions and heating ranges, leading to high energy consumption. Furthermore, heating the inlet air requires approximately 1.5% of the gas turbine's total power, but some gas turbine users lack extraction ports; some users lack steam or hot water sources; and some user stations have insufficient power capacity, resulting in many users lacking the basic conditions for moisture and anti-icing retrofitting based on their existing equipment. Utility Model Content

[0004] The purpose of this invention is to provide a gas turbine intake filter element moisture-proof and anti-icing device that utilizes the heat from the casing ventilation. This addresses two key issues in existing technologies: firstly, they only consider anti-icing at the gas turbine intake port, neglecting moisture protection for the intake filter element; secondly, they rely on compressor extraction, steam, hot water, or electricity to heat the intake air, resulting in unscientific boundary conditions and heating ranges, leading to high energy consumption; and thirdly, heating the intake air requires approximately 1.5% of the gas turbine's total power, but some gas turbine users lack extraction ports, some lack steam or hot water sources, and some have insufficient power capacity, leaving many users without the basic conditions for moisture-proof and anti-icing retrofitting of their existing equipment.

[0005] To achieve the above objectives, this utility model employs a gas turbine intake filter element moisture-proof and anti-icing device utilizing the heat from the ventilation of the housing. It includes a gas turbine, a load, a housing, an air intake source, a combustion air intake duct, an exhaust fan, a turbine exhaust chimney, and a shed. The gas turbine is housed within the housing. The load is connected to the output end of the gas turbine via a drive shaft. The air intake source is located at the gas turbine's air inlet and is also situated on one side of the gas turbine. One end of the combustion air intake duct is connected to the air intake source, and the other end is connected to the combustion chamber air inlet of the gas turbine. One end of the air intake duct is connected to the outside atmosphere, and the other end is connected to the interior of the enclosure. The exhaust fan is installed on the enclosure. The turbine exhaust chimney is connected to the turbine exhaust port of the gas turbine and is located at the tail of the gas turbine. A three-way baffle valve is installed at the air outlet of the exhaust fan. The entrance and exit of the shed are each equipped with two large doors. A controller is installed on the shed, and the three-way baffle valve is also connected to the controller. The controller is equipped with an outdoor temperature and humidity sensor and an indoor temperature and humidity sensor, and the indoor temperature and humidity sensor is also located inside the shed.

[0006] The shed is not completely enclosed and surrounds the gas turbine and the air intake source.

[0007] The three-way baffle valve has two air outlets. When power is lost, one air outlet is fully open and directly connected to the atmosphere, while the other air outlet is controlled by the controller's electrical signal and is in a 0-100% open state.

[0008] The two doors are located close to the entrance of the ventilation and hot air duct of the box, and the two doors have three states: fully open, half open, and fully closed. When fully open, the entrance air velocity is guaranteed to be less than 5m / s.

[0009] The three-way baffle valve is fixedly connected to the exhaust fan via a flange, and one of the air outlets of the three-way baffle valve is connected to the shed via a ventilation hot air duct in the housing.

[0010] The ventilation volume of the enclosure accounts for a portion of the intake air volume of the gas turbine. And the outlet temperature of the box is

[0011] This utility model discloses a gas turbine intake filter element moisture-proof and anti-icing device that utilizes the heat from the ventilation of the enclosure. The gas turbine is housed within the enclosure, using the hot air exhausted from the enclosure's own ventilation as a heat source, eliminating the need for additional compressor extraction, steam, hot water, or electricity. A three-way baffle valve at the exhaust fan outlet, controlled by a controller based on signals from outdoor and indoor temperature and humidity sensors, precisely adjusts the amount of hot air introduced, avoiding unscientific heating. A partially enclosed shed surrounds the gas turbine and the intake source. The two large doors can be fully open, half-open, or fully closed to adapt to different atmospheric temperature conditions. Furthermore, when the three-way baffle valve loses power, one outlet is fully open, directly connected to the atmosphere. This design does not rely on the gas turbine extraction interface, steam or hot water heat sources, or additional station power capacity, thus solving the basic problem for many users who lack the necessary conditions for moisture-proof and anti-icing modifications to their existing equipment. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of the gas turbine intake filter element moisture-proof and anti-icing device that utilizes the heat generated by the ventilation of the housing.

[0014] Figure 2 This is a flowchart illustrating the steps of a method for preventing moisture and ice in a gas turbine intake filter element that utilizes the heat generated by ventilation in the housing.

[0015] 1-Gas turbine, 2-Load, 3-Enclosure, 4-Air inlet, 5-Combustion air inlet duct, 6-Air inlet duct, 7-Exhaust fan, 8-Turbine exhaust chimney, 9-Shed, 10-Three-way damper valve, 11-Inlet / outlet, 12-Outdoor temperature and humidity sensor, 13-Indoor temperature and humidity sensor, 14-Controller, 15-Enclosure ventilation hot air duct. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0017] Please see Figure 1This utility model provides a gas turbine intake filter element moisture-proof and anti-icing device utilizing the heat from the ventilation of the housing, including a gas turbine 1, a load 2, a housing 3, an air intake source 4, a combustion air intake duct 65, an air intake duct 6, an exhaust fan 7, a turbine exhaust chimney 8, and a shed 9. The gas turbine 1 is disposed inside the housing 3. The load 2 is disposed at the output end of the gas turbine 1 via a drive shaft. The air intake source 4 is disposed at the air intake of the gas turbine 1 and is also located on one side of the gas turbine 1. One end of the combustion air intake duct 65 is connected to the air intake source 4, and the other end is connected to the combustion chamber air intake of the gas turbine 1. The air intake duct 65... One end is connected to the outside atmosphere, and the other end is connected to the interior of the enclosure 3. The exhaust fan 7 is installed on the enclosure 3. The turbine exhaust chimney 8 is connected to the turbine exhaust port of the gas turbine 1 and is located at the tail of the gas turbine 1. A three-way baffle valve 10 is provided at the air outlet of the exhaust fan 7. The inlet and outlet 11 of the shed 9 are each provided with two large doors. A controller 14 is provided on the shed 9, and the three-way baffle valve 10 is also connected to the controller 14. An outdoor temperature and humidity sensor 12 and an indoor temperature and humidity sensor 13 are provided on the controller 14, and the indoor temperature and humidity sensor 13 is also located inside the shed 9.

[0018] In this embodiment, by constructing a partially enclosed shed 9 environment and utilizing the hot air discharged by the exhaust fan 7, combined with the precise control of the three-way baffle valve 10, the function of automatically adjusting the amount of hot air introduced according to the outdoor temperature and humidity conditions is realized. This design not only effectively prevents the wet and ice blockage of the gas turbine 1 intake filter element, but also consumes almost no additional heat energy, significantly reducing the engineering cost and operating cost, and improving the economy and reliability of the system.

[0019] Furthermore, the shed 9 is not completely enclosed and surrounds the gas turbine 1 and the air intake source 4.

[0020] In this embodiment, the design of the partially enclosed shed 9 cleverly utilizes the mixing of natural ventilation and hot air, which not only ensures the sufficient amount of air required for the gas turbine 1 to enter the air, but also effectively reduces the impact of severe external weather on the air intake filter by surrounding the gas turbine 1 and the air intake source 4. This design improves the adaptability and stability of the system and ensures the normal operation of the gas turbine 1 in cold or humid environments.

[0021] Furthermore, the three-way baffle valve 10 has two air outlets. When power is lost, one of the air outlets is fully open and directly connected to the atmosphere, while the other air outlet is controlled by the electrical signal of the controller 14 and is in a 0-100% open state.

[0022] In this embodiment, the unique design of the three-way baffle valve 10 enables the system to maintain basic ventilation function even in the event of power failure, avoiding safety hazards caused by the accumulation of hot air. At the same time, the controller 14 precisely controls the opening degree of the other air outlet through electrical signals, realizing flexible adjustment of the amount of hot air introduced. This not only meets the needs of moisture and ice prevention, but also avoids energy waste and improves the energy efficiency ratio of the system.

[0023] Furthermore, the two doors are located close to the entrance of the ventilation and hot air duct 15 of the housing, and the two doors have three states: fully open, half open, and fully closed. When fully open, the entrance air velocity is guaranteed to be less than 5 m / s.

[0024] In this embodiment, the design of two large doors not only facilitates the uniform mixing of hot and cold air and improves the accuracy of temperature control, but also allows for flexible switching between three states: fully open, half open, and fully closed, adapting to the operational needs under different atmospheric temperature conditions. When fully open, the inlet wind speed is guaranteed to be less than 5 m / s, effectively preventing the decrease in air intake efficiency and filter wear caused by excessive wind speed, thus extending the service life of the equipment.

[0025] Furthermore, the three-way baffle valve 10 is fixedly connected to the exhaust fan 7 via a flange, and one of the air outlets of the three-way baffle valve 10 is connected to the shed 9 via the box ventilation hot air duct 15.

[0026] In this embodiment, a stable and reliable connection is formed between the three-way baffle valve 10 and the exhaust fan 7, which are fixedly connected by a flange, ensuring the continuity and stability of hot air transmission. At the same time, hot air is directly introduced into the shed 9 through the box ventilation hot air duct 15, reducing heat loss, improving heat energy utilization efficiency, and further enhancing the system's anti-humidity and anti-icing effect.

[0027] Furthermore, the ventilation volume of the enclosure 3 accounts for a portion of the intake air volume of the gas turbine 1. And the outlet temperature of the box body 3 is Furthermore, one-third of its heat is sufficient to heat the gas turbine's intake air volume.

[0028] In this embodiment, the ventilation volume of the enclosure 3 is rationally designed (accounting for a portion of the gas turbine 1's intake air volume). This ensures effective heat removal from the chamber, while maintaining the outlet temperature. This design provides ideal heat source conditions for the utilization of hot air. It not only makes full use of the waste heat generated by the gas turbine itself, but also eliminates the need for additional energy consumption, achieving efficient energy recycling and conforming to the development concept of green energy conservation.

[0029] In this utility model, when using the gas turbine intake filter element moisture-proof and anti-icing device that utilizes the heat from the housing ventilation, the three-way baffle valve 10 installed at the exhaust fan 7 (one of its outlets is connected to the newly built partially enclosed shed 9 via the housing ventilation hot air duct 15), combined with the two fully open, half-open, or fully closed doors of the shed 9's inlet and outlet 11, and the controller 14 installed on the shed 9 and the connected outdoor temperature and humidity sensor 12 and indoor temperature and humidity sensor 13, automatically adjusts the amount of hot air introduced into the shed 9 according to the outdoor temperature and humidity conditions. When the outdoor humidity is higher than the threshold, the controller 14 controls the three-way baffle valve 10 to open, allowing some hot air to mix with cold air and increase the temperature inside the shed 9, preventing the intake filter element from becoming wet or iced. When the outdoor humidity is lower than the threshold, the hot air introduction is closed to maintain the gas turbine 1 intake temperature at its lowest level to increase output and reduce fuel consumption. The entire process requires no additional heat energy consumption and has a low engineering cost.

[0030] Please see Figure 2 This utility model also provides a method for preventing moisture and ice in a gas turbine intake filter element by utilizing the heat from the ventilation of the casing, applied to the aforementioned device for preventing moisture and ice in a gas turbine intake filter element by utilizing the heat from the ventilation of the casing, comprising the following steps:

[0031] S1: Real-time monitoring of atmospheric relative humidity Ф1 via outdoor temperature and humidity sensor 12;

[0032] S2: When the relative humidity of the outdoor temperature and humidity sensor 12 is greater than 85-88%RH, the controller 14 controls the three-way baffle valve 10 to open. A portion of hot air is introduced into the workshop 9 through the ventilation hot air duct and mixes with the cold air entering from the door. At this time, the output relative humidity of the indoor temperature and humidity sensor 13 decreases.

[0033] S3: When the relative humidity of the atmosphere Ф1 of the outdoor temperature and humidity sensor 12 is less than 85~88%RH, the controller 14 controls the three-way baffle valve 10 to be de-energized, and one air outlet is fully opened to be directly connected to the atmosphere. At this time, the hot air discharged by the exhaust fan 7 is directly discharged into the atmosphere, so that the intake air temperature of the gas turbine 1 is at the lowest level.

[0034] S4: If the outdoor temperature is high, the two large doors of shed 9 can be fully open.

[0035] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A gas turbine intake filter element moisture-proof and anti-icing device utilizing the heat from the casing ventilation, comprising a gas turbine, a load, a casing, an air intake source, a combustion air intake duct, an intake duct, an exhaust fan, and a turbine exhaust chimney, wherein the gas turbine is disposed within the casing, the load is disposed at the output end of the gas turbine via a drive shaft, the air intake source is disposed at the air intake port of the gas turbine and is also located on one side of the gas turbine, one end of the combustion air intake duct is connected to the air intake source, and the other end is connected to the combustion chamber air intake port of the gas turbine, one end of the intake duct is connected to the outside atmosphere, and the other end is connected to the interior of the casing, the exhaust fan is mounted on the casing, and the turbine exhaust chimney is connected to the turbine exhaust port of the gas turbine and is located at the tail of the gas turbine, characterized in that... It also includes a shed, a three-way baffle valve is installed at the air outlet of the exhaust fan, two doors are installed at the entrance and exit of the shed, a controller is installed on the shed, and the three-way baffle valve is also connected to the controller. The controller is equipped with an outdoor temperature and humidity sensor and an indoor temperature and humidity sensor, and the indoor temperature and humidity sensor is also located inside the shed.

2. The gas turbine inlet filter element moisture-proof and anti-icing device utilizing the heat from the casing ventilation as described in claim 1, characterized in that, The shed is not completely enclosed and surrounds the gas turbine and the air intake source.

3. The gas turbine inlet filter element moisture-proof and anti-icing device utilizing the heat from the casing ventilation as described in claim 2, characterized in that, The three-way baffle valve has two air outlets. When power is lost, one air outlet is fully open and directly connected to the atmosphere, while the other air outlet is controlled by the controller's electrical signal and is in a 0-100% open state.

4. The gas turbine inlet filter element moisture-proof and anti-icing device utilizing the heat from the casing ventilation as described in claim 3, characterized in that, The two doors are located close to the entrance of the ventilation and hot air duct of the box, and the two doors have three states: fully open, half open and fully closed. When fully open, the entrance air velocity is guaranteed to be less than 5m / s.

5. The gas turbine inlet filter element moisture-proof and anti-icing device utilizing the heat from the casing ventilation as described in claim 4, characterized in that, The three-way baffle valve is fixedly connected to the exhaust fan via a flange, and one of the air outlets of the three-way baffle valve is connected to the shed via a ventilation hot air duct in the housing.

6. The gas turbine inlet filter element moisture-proof and anti-icing device utilizing the heat from the casing ventilation as described in claim 5, characterized in that, The ventilation volume of the enclosure accounts for a portion of the gas turbine's intake air volume. And the outlet temperature of the box is

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