Gas turbine intake air pretreatment device and method

Abstract

The present invention provides an intake air pretreatment device and method for a gas turbine. [Solution] The present invention includes a gas processing box, with an intake port provided at one end of the gas processing box, an air-to-air heat exchanger connected to an exhaust port at the other end of the gas processing box, the exhaust port of the air-to-air heat exchanger connected to the intake port of a gas turbine, and a gas filtration assembly and a gas dehumidification assembly installed inside the gas processing box. This optimizes the combustion requirements of the gas entering the gas turbine, improves the combustion efficiency of the fuel gas of the gas turbine, and improves air density by lowering the intake temperature with the air-to-air heat exchanger, thereby increasing the mass flow rate of air entering the gas turbine, improving combustion efficiency, generating more power, and improving the overall efficiency of the gas turbine.

Description

[Technical Field]

[0001] The present invention relates to the gas turbine intake technology, and more particularly to gas turbine intake pretreatment devices and methods. [Background technology]

[0002] Gas turbines are highly efficient and clean energy conversion devices widely used in fields such as power generation and industry. Their operating principle involves compressing air with a compressor, mixing it with fuel in a combustion chamber, and burning the resulting high-temperature, high-pressure combustion gases, which then drive the turbine to rotate and generate power. The efficiency and stability of this thermal cycle process depend heavily on the mass of the intake air.

[0003] However, in actual operating environments, the intake air mass of a gas turbine is highly susceptible to external conditions. Particulate impurities such as dust, salt, and oil stains in the atmospheric air, if entered directly into the compressor without treatment, adhere to the blades, causing corrosion, fouling, and clogging of the airflow passages. This not only reduces the compressor's compression efficiency and flow rate, but also disrupts the thermodynamic balance of the air inside the gas turbine, leading to a decrease in power output and an increase in heat consumption. At the same time, in high-temperature and high-humidity environments, excessively high moisture content in the air significantly affects the combustion state in the combustion chamber. Water vapor absorbs a large amount of heat during the combustion process, lowering the flame temperature, resulting in insufficient combustion, reduced efficiency, and potentially generating more pollutants such as nitrogen oxides. Furthermore, moisture can combine with other impurities to cause corrosion and fouling of heat passage components.

[0004] Therefore, the intake mass of a gas turbine has a significant impact on combustion efficiency and exhaust performance. Conventional intake pretreatment systems have problems such as low filtration efficiency, high energy consumption, and complex maintenance, thus necessitating a new type of intake pretreatment system for gas turbines. [Overview of the project] [Problems that the invention aims to solve]

[0005] The present invention provides a gas turbine intake air pretreatment device and method to solve the shortcomings of conventional intake air pretreatment devices in the prior art, such as low filtration efficiency, high energy consumption, and complex maintenance. [Means for solving the problem]

[0006] On the one hand, the present invention provides an intake air pretreatment device for a gas turbine, which includes a gas treatment box, an intake port provided at one end of the gas treatment box, an air-to-air heat exchanger connected to an exhaust port at the other end of the gas treatment box, the exhaust port of the air-to-air heat exchanger connected to the intake port of the gas turbine, and a gas filtration assembly and a gas dehumidification assembly installed inside the gas treatment box.

[0007] Preferably, a gas treatment chamber is installed inside the gas treatment box, the air intake is installed on the left side wall of the gas treatment box, the gas filtration assembly includes a first filter cylinder, a second filter cylinder, and a filter plate, the filter plate is fixedly connected to the inner wall of the gas treatment chamber, the filter plate divides the gas treatment chamber into a filtration chamber and a dehumidification chamber, the first filter cylinder and the second filter cylinder have the same structure and include a filter mesh and a mounting plate, both the first filter cylinder and the second filter cylinder are attached to the left inner wall of the filtration chamber via a mounting assembly, the first filter cylinder is fitted outside the air intake, and the second filter cylinder is fitted outside the first filter cylinder.

[0008] Preferably, each mounting assembly includes a plurality of mounting posts arranged along the left-right direction, the mounting posts being fixedly connected to the left wall of the filtration chamber, the mounting plates of the first and second filtration tubes being slidably connected to the mounting posts along the left-right direction, a position limiting plate being fixedly connected to the right end of the mounting post, and a spring being fixedly connected between the position limiting plate and the mounting plate.

[0009] Preferably, the gas dehumidification assembly includes a support frame, which is fixedly connected to the inner wall of the dehumidification chamber; a rotating mount is fixedly attached to the support frame; multiple sets of telescopic frames are fixedly connected to the rotating end of the rotating mount; an electric telescopic rod is fixedly connected inside each telescopic frame; an adjustment frame is fixedly connected to the output end of the electric telescopic rod; a storage chamber is installed inside the adjustment frame; a dehumidification material is placed inside the storage chamber; and the storage chamber communicates with the outside through multiple ventilation holes.

[0010] Preferably, the gas dehumidification assembly further includes a material processing assembly, the material processing assembly includes a drying frame, the drying frame is fixedly connected to the inner top surface of the dehumidification chamber, insulating curtains are installed on both the front and rear sides of the drying frame, heating wires are installed on the inner bottom surface of the drying frame, a suction pump is attached to the outer top surface of the gas processing box, and the intake port of the suction pump is provided above the drying frame.

[0011] Preferably, the gas dehumidification assembly further includes a processing control system, the processing control system is A first humidity sensor is installed at the air intake of the dehumidification chamber to detect the relative humidity of the air before dehumidification, A second humidity sensor is installed at the exhaust port of the dehumidification chamber to detect the relative humidity of the air after dehumidification, A dehumidification effect monitoring module is activated to monitor the relative humidity of the dehumidified air in real time, and if the relative humidity of the dehumidified air is higher than a preset first threshold, the dehumidification effect monitoring module is activated to dry the dehumidified material. Includes a material life monitoring module that monitors the remaining lifespan of the dehumidifying material and replaces the dehumidifying material when its lifespan is nearing its end.

[0012] Preferably, the material life monitoring module is A lifespan correction unit that re-evaluates the remaining service life of the dehumidifying material after all dehumidifying materials have been dried.

number

[0013] On the other hand, the present invention further provides a method for pre - treating the intake air of a gas turbine, and this method includes step 1 of extracting air from the external environment at a preset flow rate, step 2 of multi - layer filtering the extracted air to remove particulate matter in the air, step 3 of dehumidifying the filtered air to reduce the humidity of the air, step 4 of adjusting the temperature of the air after dehumidification to maintain the stability of the intake air temperature of the gas turbine. [Advantages of the Invention]

[0014] Compared with the prior art, the present invention has the following beneficial effects.

[0015] The present invention provides an intake pretreatment device for a gas turbine, which removes particulate matter of different particle sizes in the intake air by a gas filtration assembly, reduces internal wear and clogging of the gas turbine, and the gas dehumidification assembly reduces the intake air humidity and avoids corrosion of the gas turbine by water droplets in the combustion process. Next, the air-to-air heat exchanger realizes temperature reduction, optimizes the combustion requirements of the gas entering the gas turbine, not only improves the combustion efficiency of the gas, but also improves the air density by temperature reduction, increases the mass flow rate of the air entering the gas turbine, further strengthens the combustion effect, is beneficial for the gas turbine to generate more power, and finally significantly improves the overall operating efficiency of the gas turbine.

[0016] Furthermore, the present invention improves the filtration degree of particulate matter and other impurities in the gas and reduces the content of particulate matter entering the gas turbine by installing triple filtration of the first filtration cylinder, the second filtration cylinder and the filter plate. By setting different filtration particle sizes with the first filtration cylinder, the second filtration cylinder and the filter plate, impurities of different particle sizes are retained at different filtration levels, and the filtration pressure is evenly shared at different filtration levels, avoiding the situation that the filtration pressure of some filtration levels is too high, the probability of clogging is high, and the service life is short.

[0017] Furthermore, the present invention drives the rotation of the storage chamber by driving the rotation of the telescopic frame by a rotary mount, thereby disturbing the gas and improving the contact uniformity between the gas and the dehumidification material, thereby improving the dehumidification effect on the gas. Furthermore, by the telescopic action of the electric telescopic rod, the distance from the adjustment frame to the rotary mount can be adjusted, thereby further improving the contact uniformity between the gas and the dehumidification material and further improving the dehumidification effect.

[0018] Furthermore, the gas dehumidification assembly of the present invention further includes a processing control system, which accurately collects air humidity data before and after dehumidification in real time using a first humidity sensor and a second humidity sensor, providing reliable data support for adjusting and controlling the dehumidification effect and evaluating material life. The dehumidification effect monitoring module can automatically compare the humidity after dehumidification with a preset first threshold, quickly triggering the drying process when the threshold is exceeded, ensuring that the intake air humidity always meets the operating requirements of the gas turbine, avoiding the impact on combustion efficiency due to dehumidification not reaching the threshold, and simultaneously eliminating the need for manual intervention, reducing the frequency of downtime maintenance, and ensuring the continuity of the gas supply. The material life monitoring module calculates the remaining lifespan of the dehumidified material, automatically corrects the service life data after drying, and issues a timely alarm when the remaining service life falls below a second threshold, reminding operators to replace materials in a planned manner. This avoids the risk of dehumidification failure due to material degradation, allows for full utilization of the material's lifespan, reduces operational maintenance costs, and achieves intelligent and automated management and control of the dehumidification process as a whole, improving the stability and reliability of the equipment's operation. [Brief explanation of the drawing]

[0019] To more clearly illustrate the solutions in the present invention or the prior art, the following briefly describes the drawings that may be used in the examples or prior art descriptions. Obviously, the drawings in the following description are some examples of the present invention, and those skilled in the art can obtain other drawings based on the structures shown in these drawings without expending any creative effort. [Figure 1] This is a schematic diagram of the structure of the present invention. [Figure 2] This is an enlarged schematic diagram of the structure at point A in Figure 1. [Modes for carrying out the invention]

[0020] To further clarify the object, technical solution, and advantages of the present invention, the technical solution will be clearly and completely described below, in conjunction with the drawings. Naturally, the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained based on the embodiments of the present invention without the creative effort of a person skilled in the art are all within the scope of the protection of the present invention.

[0021] Furthermore, descriptions in this invention such as "first," "second," etc., are used solely for descriptive purposes and do not particularly indicate order or rank, nor are they intended to limit the invention. They merely distinguish assemblies or operations described using the same technical terminology and should not be understood as indicating or implying their relative importance or implicitly indicating the number of specified technical features. Therefore, features defining "first," "second," etc., may explicitly or implicitly include at least one such feature. Also, while the technical ideas and technical features between each embodiment are combinable, this must be based on what a person skilled in the art can achieve. If a combination of technical ideas results in mutual contradictions or is not achievable, then such a combination of technical ideas should be considered nonexistent and not within the scope of the claims of this invention.

[0022] (Example 1) An embodiment of the present invention provides an intake air pretreatment device for a gas turbine, which includes a gas treatment box 1. An intake port 2 is provided at one end of the gas treatment box 1, and an air-to-air heat exchanger 3 is connected to the exhaust port at the other end of the gas treatment box 1. The exhaust port of the air-to-air heat exchanger 3 is connected to the intake port of the gas turbine, and a gas filtration assembly and a gas dehumidification assembly are installed inside the gas treatment box 1.

[0023] The gas treatment box 1 has a sealed enclosure structure as the main body structure of the device, and a gas treatment passage is configured inside. It is generally made of carbon steel or stainless steel, and has sufficient structural strength and corrosion resistance. Intake port 2 is located at the intake opening on the left side of the gas processing box, is connected to the external piping, and is used to allow outside air to enter. It is a tubular or open passage, is generally made of the same metal material as the housing, and requires corrosion protection treatment at the connection port.

[0024] The beneficial effects of the above proposed technology are as follows:

[0025] By filtering, dehumidifying, and cooling the intake air of the gas turbine, the combustion requirements of the gas entering the gas turbine are optimized, improving the combustion efficiency of the fuel gas in the gas turbine. Furthermore, by lowering the intake air temperature with an air-to-air heat exchanger, the air density can be increased, thereby increasing the mass flow rate of air entering the gas turbine, improving combustion efficiency, generating more power, and improving the overall efficiency of the gas turbine.

[0026] Multiple filtration significantly removes particulate matter from the gas, reducing wear on the gas turbine. Pre-treating the gas also reduces its moisture content, preventing water droplets generated during combustion from adhering to the inside of the gas turbine and causing corrosion.

[0027] (Example 2) Based on Embodiment 1, a gas treatment chamber 4 is installed inside the gas treatment box 1, the intake port 2 is installed on the left side wall of the gas treatment box 1, the gas filtration assembly includes a first filter cylinder 5, a second filter cylinder 6, and a filter plate 7, the filter plate 7 is fixedly connected to the inner wall of the gas treatment chamber 4, the filter plate 7 divides the gas treatment chamber 4 into a filtration chamber 8 and a dehumidification chamber 9, the first filter cylinder 5 and the second filter cylinder 6 have the same structure and include a filter screen 10 and a mounting plate 11, both the first filter cylinder 5 and the second filter cylinder 6 are attached to the left inner wall of the filtration chamber 8 by the mounting assembly, the first filter cylinder 5 is fitted outside the intake port 2 and the second filter cylinder 6 is fitted outside the first filter cylinder 5.

[0028] The gas treatment chamber 4 is the main space for air treatment, serving as a cavity inside the gas treatment box 1.

[0029] The first filter cylinder 5 is a primary filtration device fitted outside the air intake port 2 and consists of a cylindrical filter mesh 10 and a mounting plate 11. The filter mesh 10 is generally made of stainless steel mesh, and the mounting plate 11 is made of aluminum alloy or carbon steel.

[0030] The second filter cylinder 6 is a two-stage filtration device fitted outside the first filter cylinder 5, and its structure is the same as the first filter cylinder 5, and it is manufactured from the same material, although the filter mesh 10 may be of a different type. The filter plate 7 is a porous partition plate fixed inside the gas treatment chamber 4, dividing the cavity of the gas treatment chamber 4 into a filtration chamber and a dehumidification chamber. Generally, a porous stainless steel plate is used, having uniformly distributed fine pores. The filtration chamber 8 is the space in front of the filter plate 7 within the gas processing chamber 4, and is the operating area for air filtration. The dehumidification chamber 9 is the space behind the filter plate 7 within the gas processing chamber 4, and is the operating area for air dehumidification. Preferably, each mounting assembly includes a plurality of mounting posts 12 arranged along the left-right direction, the mounting posts 12 being fixedly connected to the left wall of the filtration chamber 8, the mounting plates 11 of the first filter cylinder 5 and the second filter cylinder 6 being slidably connected to the mounting posts 12 along the left-right direction, a position limiting plate 13 being fixedly connected to the right end of the mounting posts 12, and a spring 14 being fixedly connected between the position limiting plate 13 and the mounting plate 11.

[0031] The mounting column 12 is a cylindrical support member, generally made of stainless steel or carbon steel, and requires surface treatment to prevent rust.

[0032] The position limiting plate 13 is a circular baffle fixed to the end of the mounting column and is used to limit the range of movement of the filter cylinder. Its material is the same as that of the mounting column, and it is mostly a stainless steel disc.

[0033] The spring 14 is a compression spring fitted onto the mounting column 12 and provides the restoring force for the filter cylinder.

[0034] The beneficial effects of the above proposed technology are as follows:

[0035] By installing triple filtration consisting of a first filter cylinder 5, a second filter cylinder 6, and a filter plate 7, the degree of filtration for particulate matter and other impurities in the gas is improved, and the amount of particulate matter entering the gas turbine is reduced.

[0036] By setting different filter particle sizes using the first filter cylinder 5, the second filter cylinder 6, and the filter plate 7, impurities of different particle sizes are retained at different filtration levels, and the filtration pressure is distributed uniformly across these different filtration levels. This avoids the problem of excessively high filtration pressure at some filtration levels, which would increase the likelihood of clogging and shorten the service life.

[0037] When the first filter cylinder 5 and the second filter cylinder 6 are not clogged, the mounting plate 11 is in close contact with the inner wall of the filtration chamber 8 by the action of the spring 14, ensuring that the intake air passes through the multi-layer filtration and guaranteeing the filtration effect on the intake air. When the first filter cylinder 5 and the second filter cylinder 6 become clogged, it causes a decrease in gas permeability and further increases the intake air pressure. As the intake air pressure increases, the spring 14 is compressed, thereby creating a gap between the mounting plate 11 of the first filter cylinder 5 or the second filter cylinder 6 and the inner wall of the filtration chamber 8. This allows some of the intake air to pass through the gap and enter the next filtration level, releasing excessive pressure and preventing damage to the clogged filter cylinder by excessive pressure. This ensures that the clogged filter cylinder can still exert some filtration effect, thereby preventing excessive filtration pressure from being introduced to the next filtration level and avoiding damage to the next filtration level.

[0038] (Example 3) Based on Embodiment 2, the gas dehumidification assembly includes a support frame 15, which is fixedly connected to the inner wall of the dehumidification chamber 9. A rotating mount 16 is fixedly attached to the support frame 15, and multiple sets of telescopic frames 17 are fixedly connected to the rotating end of the rotating mount 16. An electric telescopic rod 18 is fixedly connected inside each telescopic frame 17, and an adjustment frame 19 is fixedly connected to the output end of the electric telescopic rod 18. A storage chamber 20 is installed inside the adjustment frame 19, and dehumidification material is placed inside the storage chamber 20. The storage chamber 20 communicates with the outside through multiple ventilation holes.

[0039] In this embodiment, the support frame 15 is a frame structure fixed within the dehumidification chamber and is used to support the rotating mount 16. Generally, it is manufactured by welding stainless steel tubing.

[0040] In this embodiment, the rotary mount 16, as a rotating mechanism attached to the support frame 15, includes a fixed base, a drive motor, a rotating bearing, and a flange at the rotating end. The fixed base is fastened to the support frame 15, the drive motor is fitted inside the fixed base, the output shaft of the drive motor is connected coaxially to the flange at the rotating end, and the flange is fixedly connected to the telescopic frame 17. In this embodiment, multiple sets of radially distributed telescopic frames 17 are fixedly connected to the rotating end of the rotary mount 16. The telescopic frames 17 are generally made of stainless steel tubing, which serves as the load-bearing and transmission framework, and are hollow inside to house the electric telescopic rod 18.

[0041] In this embodiment, the axis of the electric telescopic rod 18 coincides with the extension and retraction direction of the telescopic frame 17, and the front end of the output shaft of the electric telescopic rod 18 protrudes from the front end surface of the telescopic frame 17 and is fixedly connected to the end of the adjustment frame 19, ensuring that the adjustment frame can be stably driven to move back and forth when the electric telescopic rod 18 extends and retracts.

[0042] In this embodiment, a container of dehumidifying material is placed inside the storage chamber 20, and ventilation holes are provided in the wall surface. These are generally manufactured using stainless steel mesh plates, which allow air to pass through while simultaneously fixing the dehumidifying material.

[0043] Preferably, the gas dehumidification assembly further includes a material processing assembly, the material processing assembly includes a drying frame 21, which is fixedly connected to the inner top surface of the dehumidification chamber 9, insulating curtains are installed on both the front and rear sides of the drying frame 21, a heating element 22 is installed on the inner bottom surface of the drying frame 21, a suction pump 23 is attached to the outer top surface of the gas processing box 1, and the intake port of the suction pump 23 is provided above the drying frame 21.

[0044] In this embodiment, the air-to-air heat exchanger 3 is a prior art example, a novel air-to-air heat exchanger 3 disclosed in CN220708158U.

[0045] In this embodiment, the drying frame 21 is made of heat-resistant stainless steel and can withstand the operating temperature of the heating element 22, serving as a heating device frame fixed to the top of the dehumidifying chamber 9.

[0046] In this example, the dehumidifying material is a reusable dehumidifying material that can be reused after the internal moisture is evaporated by heating. The dehumidifying material generally used is silica gel, zeolite molecular sieve, or activated aluminum oxide.

[0047] The beneficial effects of the above proposed technology are as follows:

[0048] After being filtered, the gas enters the dehumidification chamber 9, where moisture in the gas is adsorbed by the dehumidifying material, thereby achieving a dehumidifying effect on the gas.

[0049] The rotating mount 16 drives the rotation of the telescopic frame 17, which in turn drives the rotation of the storage chamber 20, thereby disturbing the gas and improving the uniformity of contact between the gas and the dehumidifying material, thereby improving the dehumidifying effect on the gas. Furthermore, the extension and retraction action of the electric telescopic rod 18 allows adjustment of the distance from the adjustment frame 19 to the rotating mount 16, thereby further improving the uniformity of contact between the gas and the dehumidifying material and further improving the dehumidifying effect.

[0050] If the dehumidification effect is poor (i.e., the relative humidity of the air after dehumidification is still higher than the preset dehumidification threshold), the electric telescopic rod 18 is extended to its longest position, and the rotation angle of the rotary mount 16 is controlled to sequentially occupy the storage chamber 20 containing the dehumidified material within the drying frame 21. Heating of the electric heating wire 22 in the drying frame 21 evaporates the moisture in the dehumidified material, preventing a large amount of moisture-containing gas from being extracted from the gas processing box 1 by the suction pump 23 and affecting the dehumidification effect of the gas inside the drying chamber. An insulating curtain is installed to prevent heat generated during the drying process of the dehumidified material from being dissipated into the drying chamber, while the drying frame 21 reduces internal heat dissipation, further improving the drying effect and efficiency of the dehumidifying material. On the other hand, it avoids heat dissipation into the dehumidifying chamber 9, which would cause the gas temperature inside the dehumidifying chamber 9 to rise and reduce the stability of the gas temperature. By sequentially storing the storage chamber 20 containing the dehumidifying material inside the drying frame 21, the remaining dehumidifying material in the storage chamber 20 can still achieve the dehumidifying effect, reducing the frequency of shutdowns, ensuring the continuity of the air supply to the gas turbine, and ensuring high-efficiency and stable dehumidification of the intake air through automatic drying of the dehumidifying material. It also eliminates the need for maintenance by operators after shutdowns, reducing the complexity of maintenance.

[0051] (Example 4) Based on Example 3, the gas dehumidification assembly further includes a processing control system, the processing control system is A first humidity sensor installed at the air inlet of the dehumidification chamber 9 for detecting the relative humidity of the air before dehumidification, A second humidity sensor installed at the air outlet of the dehumidification chamber 9 for detecting the relative humidity of the air after dehumidification, A dehumidification effect monitoring module for monitoring the relative humidity of the air after dehumidification in real time, and drying the dehumidification material when the relative humidity of the air after dehumidification is higher than a preset first threshold value, A material life monitoring module for monitoring the remaining life of the dehumidification material and replacing the dehumidification material when the life is approaching.

[0052] Preferably, the material life monitoring module is a life correction unit that re-evaluates the remaining service life of the dehumidification material after the drying of all the dehumidification materials is completed, [Number] [Number] [Number] Here, t f is the remaining service life, ln is the logarithmic function with base e, H r is the actual relative humidity of the air before dehumidification, P0 is the unit pressure, T r is the actual temperature of the air before dehumidification, T0 is the unit temperature, R is the ideal gas constant, A Z is the maximum allowable absolute humidity of the air entering the preset gas turbine, H c is the actual relative humidity of the air after dehumidification, T c is the actual temperature of the air after dehumidification, t0 is the unit time, t s is the usage time of the dehumidification material, A1 is the actual absolute humidity of the air before dehumidification, A2 is the actual absolute humidity of the air after dehumidification, A c is a life correction unit that is the change value of the absolute humidity in the dehumidification process in the optimal state of the dehumidification material, The system includes an alarm unit that sounds an alarm and alerts the operator to replace the dehumidifying material if the remaining service life of the dehumidifying material falls below a preset second threshold.

[0053] In this embodiment, the maximum allowable absolute humidity of the air entering the gas turbine is determined after the test measurement.

[0054] In this embodiment, the optimal state of the dehumidifying material refers to the initial state of the dehumidifying material, that is, the state in which its dehumidifying capacity is highest. The absolute humidity change value during the dehumidification process in the optimal state of the dehumidifying material is the absolute humidity change value obtained when the dehumidifying material is in its optimal state.

[0055] The beneficial effects of the above proposed technology are as follows:

[0056] By monitoring the relative humidity of the dehumidified air, if the relative humidity of the dehumidified air exceeds a preset first threshold, it indicates that the intake air humidity of the gas turbine is too high. Furthermore, it can be estimated that the dehumidifying material is approaching saturation at this time. The dehumidifying material is then dried to restore it to a dry state, enabling automatic drying of the dehumidifying material, reducing the number of shutdowns, ensuring the continuity of the air supply to the gas turbine, and guaranteeing a highly efficient and stable dehumidification effect on the intake air through automatic drying of the dehumidifying material. This eliminates the need for maintenance by operators after shutdowns, reducing the complexity of maintenance. By determining the moisture absorption state of the dehumidifying material and drying it accordingly, it ensures timely drying when the dehumidification effect is poor, guaranteeing the dehumidification effect on the air, simultaneously reducing the number of times the material processing assembly is started, further reducing the time the material processing assembly is affected by the air condition during use, and simultaneously reducing energy consumption.

[0057] Each time the drying of the dehumidifying material is completed, the remaining service life of the dehumidifying material is re-evaluated to determine its current fatigue state and whether or not it needs to be replaced. This avoids situations where the drying frequency is significantly increased after the dehumidifying material has already deteriorated, or where the current dehumidification requirements cannot be met even after drying the material, leading to energy waste and the possibility of sudden shutdowns. By pre-evaluating the remaining service life of the dehumidifying material, it is possible to replace the dehumidifying material during planned shutdowns, ensuring the normal operation of the gas turbine, guaranteeing the stability of the dehumidification effect, and avoiding energy waste.

[0058] When calculating the remaining service life of dehumidifying materials,

number

[0059] (Example 5) The embodiments of the present invention further provide a gas turbine intake air pretreatment method that can be applied to the gas turbine intake air pretreatment device described in any one of Examples 1 to 4. Step 1 involves extracting air from the external environment at a predetermined flow rate, Step 2 involves multi-layer filtration of the extracted air to remove particulate matter from the air, Step 3 involves dehumidifying the filtered air and reducing the humidity of the air. The process includes step 4, which involves adjusting the temperature of the dehumidified air to maintain the stability of the gas turbine intake air temperature.

[0060] Specifically, the blower extracts outside air through the intake port 2, and the air enters the filtration chamber 8 of the gas processing box 1 according to a preset flow rate. First, particulate matter of different particle sizes is classified and blocked by the fitted first filter cylinder 5 and second filter cylinder 6. In its natural state, the mounting column 12 and position limiting plate 13 of the mounting assembly engage with the spring 14, pressing the mounting plate 11 tightly against the cavity wall, ensuring full filtration of the airflow. When the filter screen 10 becomes clogged, the air pressure increases, compressing the spring 14, creating a gap between the mounting plate 11 and the cavity wall to release pressure, while simultaneously retaining some filtration function. The subsequent air is then further finely filtered by the filter plate 7 before entering the dehumidification chamber 9.

[0061] In the dehumidification chamber 9, a rotary mount 16 fixed to the support frame 15 drives the telescopic frame 17 to move in a circular motion, and an electric telescopic rod 18 inside the telescopic frame 17 reciprocates to adjust the distance between the adjustment frame 19 and the center of rotation, thereby allowing the dehumidification material in the storage chamber 20 to come into sufficient contact with air through the ventilation holes and absorb moisture.

[0062] The first and second humidity sensors of the processing control system collect humidity data before and after dehumidification in real time. The dehumidification effect monitoring module compares the humidity after dehumidification with a first threshold (e.g., 60%RH). If the threshold is exceeded, it controls the rotating mount 16 to sequentially move the telescopic frame 17 to the drying frame 21. The heating element 22 is energized to dry the dehumidified material, the insulating curtain reduces heat dissipation, and the suction pump 23 extracts the evaporated moisture. The remaining telescopic frame 17 continues the dehumidification process.

[0063] After each drying cycle is complete, the material life monitoring module calls a formula to calculate the remaining life of the dehumidified material and activates an acoustic-optical alarm if it falls below a second threshold (e.g., 50 hours). After dehumidification reaches the threshold, the air enters the air-to-air heat exchanger 3, where its temperature is reduced and stabilized by water-cooled heat exchange. The air that finally meets the requirements is then introduced into the gas turbine intake, completing the entire pretreatment flow.

[0064] The beneficial effects of the above proposed technology are as follows:

[0065] Removing impurities such as moisture, dust, particulate matter, sulfides, and carbon dioxide from the intake air purifies the combustion gas, which is advantageous for efficient fuel combustion. Removing impurities from the intake air prevents their accumulation on the gas turbine during the combustion process, reducing the probability of gas turbine clogging and simultaneously reducing the generation of corrosive products during combustion, thereby reducing the risk to the gas turbine. Pretreatment methods such as filtration and temperature control optimize the mass of air entering the gas turbine, improving intake efficiency. Improved intake efficiency contributes to the stable operation of the gas turbine over a wider operating range, improving the overall performance of the gas turbine.

[0066] Finally, it should be noted that the above embodiments are merely for illustrating the technical concepts of the present invention and do not limit them. While the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that it is still possible to modify the technical concepts described in the above embodiments or to replace some of their technical features. Such modifications or replacements do not cause the essence of the relevant technical concept to deviate from the spirit and scope of the technical concepts in each embodiment of the present invention. [Explanation of Symbols]

[0067] 1. Gas processing box 2. Air intake 3. Air-to-air heat exchanger 4. Gas processing chamber 5. First filter cylinder 6. Second filter tube 7 Filter plate 8 Filtration Chamber 9 Dehumidifying Chamber 10 Filter net 11 Mounting plate 12 Mounting posts 13 Position restriction plate 14 Springs 15 Support frame 16 Rotating Mount 17 Telescopic Frame 18 Electric Telescopic Rod 19 Adjustment Frame 20 Storage Chambers 21 Drying Frame 22 Heating wire 23. Suction pump.

Claims

1. A gas turbine intake air pretreatment device, comprising a gas processing box (1), an intake port (2) provided at one end of the gas processing box (1), an air-to-air heat exchanger (3) connected to an exhaust port at the other end of the gas processing box (1), the exhaust port of the air-to-air heat exchanger (3) connected to an intake port of the gas turbine, and a gas filtration assembly and a gas dehumidification assembly installed inside the gas processing box (1).

2. A gas treatment chamber (4) is installed inside the gas treatment box (1), and the air intake (2) is installed on the left wall of the gas treatment box (1). The gas filtration assembly includes a first filter cylinder (5), a second filter cylinder (6), and a filter plate (7), the filter plate (7) being fixedly connected to the inner wall of the gas treatment chamber (4), and the filter plate (7) dividing the gas treatment chamber (4) into a filtration chamber (8) and a dehumidification chamber (9), The gas turbine intake pretreatment device according to claim 1, characterized in that the first filter cylinder (5) and the second filter cylinder (6) have the same structure and both include a filter screen (10) and a mounting plate (11), both the first filter cylinder (5) and the second filter cylinder (6) are attached to the left inner wall of the filtration chamber (8) via a mounting assembly, the first filter cylinder (5) is fitted outside the intake port (2), and the second filter cylinder (6) is fitted outside the first filter cylinder (5).

3. The gas turbine intake pretreatment device according to claim 2, characterized in that each set of mounting assemblies includes a plurality of mounting columns (12) arranged along the left-right direction, the mounting columns (12) are fixedly connected to the left-right wall of the filtration chamber (8), the mounting plates (11) of the first filtration cylinder (5) and the second filtration cylinder (6) are both slidably connected to the mounting columns (12) along the left-right direction, a position limiting plate (13) is fixedly connected to the right end of the mounting column (12), and a spring (14) is fixedly connected between the position limiting plate (13) and the mounting plate (11).

4. The gas dehumidification assembly includes a support frame (15), the support frame (15) is fixedly connected to the inner wall of a dehumidification chamber (9), a rotary mount (16) is fixedly attached to the support frame (15), a plurality of telescopic frames (17) are fixedly connected to the rotating end of the rotary mount (16), an electric telescopic rod (18) is fixedly connected inside each telescopic frame (17), an adjustment frame (19) is fixedly connected to the output end of the electric telescopic rod (18), a storage chamber (20) is installed inside the adjustment frame (19), a dehumidification material is placed inside the storage chamber (20), and the storage chamber (20) communicates with the outside through a plurality of vents, as described in claim 2.

5. The gas dehumidification assembly further comprises a material processing assembly, the material processing assembly comprising a drying frame (21), the drying frame (21) being fixedly connected to the inner top surface of the dehumidification chamber (9), insulating curtains being installed on both the front and rear sides of the drying frame (21), an electric heating element (22) being installed on the inner bottom surface of the drying frame (21), a suction pump (23) being attached to the outer top surface of the gas processing box (1), and the intake port of the suction pump (23) being provided above the drying frame (21), as described in claim 4, which is the intake pretreatment device for a gas turbine.

6. The gas dehumidification assembly further includes a processing control system, and the processing control system is A first humidity sensor is installed at the air intake of the dehumidification chamber (9) to detect the relative humidity of the air before dehumidification, A second humidity sensor is installed at the exhaust port of the dehumidification chamber (9) to detect the relative humidity of the air after dehumidification, A dehumidification effect monitoring module is activated to monitor the relative humidity of the dehumidified air in real time, and if the relative humidity of the dehumidified air is higher than a preset first threshold, the dehumidification effect monitoring module is activated to dry the dehumidified material. The intake pretreatment device for a gas turbine according to claim 5, further comprising a material life monitoring module for monitoring the remaining life of a dehumidifying material and for replacing the dehumidifying material when its life is nearing its end.

7. The material life monitoring module is A lifespan correction unit that re-evaluates the remaining service life of the dehumidifying material after all dehumidifying materials have been dried. [Math 1] [Math 2] [Math 3] Here, t ｃ is the remaining service life, ln is the logarithmic function with base e, H ｒ is the actual relative humidity of the air before dehumidification, P ０ is the unit pressure, T ｒ is the actual temperature of the air before dehumidification, T ０ is the unit temperature, R is the ideal gas constant, A Ｚ is the maximum allowable absolute humidity of the air entering the preset gas turbine, H ｃ is the actual relative humidity of the air after dehumidification, T ｃ is the actual temperature of the air after dehumidification, t ０ is the unit time, t ｓ is the usage time of the dehumidification material, A １ is the actual absolute humidity of the air before dehumidification, A ２ is the actual absolute humidity of the air after dehumidification, A ｃ is a life correction unit which is the change value of the absolute humidity in the dehumidification process in the optimal state of the dehumidification material, and The gas turbine intake pretreatment device according to claim 6, further comprising an alarm unit that sounds an alarm and alerts an operator to replace the dehumidifying material if the remaining service life of the dehumidifying material is lower than a preset second threshold.

8. A method for pre-treating intake air for a gas turbine, applicable to the gas turbine intake air pre-treatment apparatus described in claim 1, Step 1 involves extracting air from the external environment at a predetermined flow rate, Step 2 involves multi-layer filtration of the extracted air to remove particulate matter from the air, Step 3 involves dehumidifying the filtered air and reducing its humidity. A gas turbine intake air pretreatment method, characterized by including step 4, which involves adjusting the temperature of the dehumidified air to maintain the stability of the gas turbine intake air temperature.

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