Impurity filtering device for gas inlet of gas turbine

Abstract

The utility model discloses an impurity filtering device for an air inlet of a gas turbine, and belongs to the technical field of air dust removal. The gas turbine air inlet impurity filtering device comprises a base, a filtering assembly, an air inlet assembly and an air outlet assembly, the filtering assembly is arranged above the base, the air inlet assembly is arranged on one side of the outer portion of the filtering assembly, the air outlet assembly is arranged outside the filtering assembly, the filtering assembly is used for filtering air impurities, and the air inlet assembly is used for air inlet of the filtering assembly. The air inlet assembly comprises an air inlet pipe, the two sides of one face of the air inlet pipe communicate with a first circulation pipe and a second circulation pipe correspondingly, and first electromagnetic valves are installed at the ends, away from the air inlet pipe, of the first circulation pipe and the second circulation pipe correspondingly; air inlets and air outlets are formed in the two sides of the outer parts of the two filtering seats respectively; one ends of the two first electromagnetic valves are connected with the two air inlets respectively.

Description

Technical Field

[0001] This utility model relates to the field of air dust removal technology, specifically a gas turbine inlet impurity filtration device. Background Technology

[0002] A gas turbine requires 40-50 times more air than fuel during operation, and the cleanliness of the intake air directly affects its efficiency and safety. The main function of the intake filtration system is to filter out airborne particles such as dust, sand, inorganic salts, and oil vapors, as well as liquid impurities such as raindrops and fog droplets, preventing them from entering the compressor and causing wear, corrosion, and scaling on the compressor blades and internal passage surfaces, thus ensuring the compressor operates efficiently.

[0003] For example, Chinese Patent CN207178071U discloses a gas turbine intake filtration device. Between the intake and outlet of the filter housing (1), a pretreatment section (2), a coarse fiber filter element (3), and an electrostatic dust removal and noise reduction section (4) are sequentially arranged. The coarse fiber filter element (3) has only a coarse fiber filter layer (31). The electrostatic dust removal and noise reduction section (4) includes several sets of electrode plates. Each set of electrode plates includes two opposing electrode plates connected to the positive and negative electrodes respectively. Simultaneously, a sound-absorbing material layer is applied to the surface of the electrode plates. Compared with the prior art, this utility model has the following advantages: it can reduce the resistance of the gas turbine intake system while efficiently removing dust, thus improving the economy of the gas turbine unit.

[0004] In actual use, the technical solution described in this plan requires a shutdown operation during the maintenance process of cleaning or replacing the coarse filter layer of the filter cartridge. The shutdown operation requires additional energy to restart the gas turbine, which can easily lead to energy waste. Furthermore, frequent start-stop operations will accelerate the wear and tear of gas turbine components. Utility Model Content

[0005] The purpose of this invention is to provide a gas turbine inlet impurity filtration device to solve the problems mentioned in the background art.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] A gas turbine inlet impurity filtration device includes a base, a filter assembly, an intake assembly, and an exhaust assembly. The filter assembly is disposed above the base, the intake assembly is disposed on the outer side of the filter assembly, and the exhaust assembly is disposed on the outer side of the filter assembly. The filter assembly is used to filter air impurities, the intake assembly is used to allow air to enter the filter assembly, and the exhaust assembly is used to allow air to exit the filter assembly. The intake assembly includes an intake pipe, and a first flow pipe and a second flow pipe are respectively connected to both sides of one side of the intake pipe. A first solenoid valve is installed at the end of the first and second flow pipes away from the intake pipe. The filter assembly includes two filter seats, and an intake port and an exhaust port are respectively opened on the outer sides of the two filter seats. One end of each of the two first solenoid valves is connected to the two intake ports.

[0008] Furthermore, the exhaust assembly includes an exhaust pipe, with a third flow pipe and a fourth flow pipe respectively connected to both sides of one side of the exhaust pipe. A second solenoid valve is installed at the end of the third flow pipe and the fourth flow pipe away from the exhaust pipe, and one end of each of the two second solenoid valves is connected to two exhaust ports respectively.

[0009] The beneficial effect of adopting the above-mentioned further solution is that, by setting up a third flow pipe and a fourth flow pipe, and installing a second solenoid valve at one end of the third flow pipe and the fourth flow pipe, when the filter element inside the front filter seat needs cleaning and maintenance, the first solenoid valve and the second solenoid valve at the second flow pipe and the fourth flow pipe are closed while the first solenoid valve and the second solenoid valve at the first flow pipe and the third flow pipe are opened, changing the air flow path, so that the air that originally flowed into the front filter seat flows into the rear filter seat, thereby cleaning and maintaining the filter component inside the front filter seat and avoiding downtime.

[0010] Furthermore, a flow meter is connected to the end of the exhaust pipe that is furthest from the filter seat.

[0011] The beneficial effect of adopting the above-mentioned further solution is that by setting a flow meter, the flow meter monitors the flow rate of the gas discharged after passing through the filter device in real time. When the air flow rate drops abnormally, it means that the polyester fiber filter layer, glass fiber filter layer, synthetic fiber filter layer or activated carbon adsorption layer in the filter seat that is currently available for air flow is blocked.

[0012] Furthermore, the filter seat has a square cavity inside, and a square base is provided inside the square cavity. Near the upper end of the square base, four slots are provided. Each of the four slots has a partition that slides inside. The outer wall of each of the four partitions near the upper end slides into the inner wall of the four slots. Each of the four partitions has a round hole inside. Each of the four round holes has a polyester fiber filter layer, a glass fiber filter layer, a synthetic fiber filter layer, and an activated carbon adsorption layer inside. The top surface of each of the four partitions has a groove.

[0013] The beneficial effect of adopting the above-mentioned further solution is that, through the combined use of polyester fiber filter layer, glass fiber filter layer, synthetic fiber filter layer and activated carbon adsorption layer, air impurities are filtered in multiple stages. The polyester fiber filter layer can filter larger particulate impurities, the glass fiber filter layer and synthetic fiber filter layer can remove dust and particulate matter in the air, and the activated carbon adsorption layer can adsorb harmful gases and odors. The partition and slot are slidably engaged, and when the polyester fiber filter layer, glass fiber filter layer, synthetic fiber filter layer or activated carbon adsorption layer needs to be replaced, the corresponding partition can be directly pulled out from the slot through the groove to achieve cleaning and maintenance.

[0014] Furthermore, the outer wall of the square base is clearance-fitted with the inner wall of the square cavity, and a circular cavity is formed inside the square base. All four slots are connected to the circular cavity, and the outer walls of the four partitions near the bottom are clearance-fitted with the inner walls of the circular cavity.

[0015] The beneficial effect of adopting the above-mentioned further solution is that by setting a circular cavity and connecting the circular cavity with the slot, air can pass through the polyester fiber filter layer, glass fiber filter layer, synthetic fiber filter layer and activated carbon adsorption layer in sequence.

[0016] Furthermore, a sealing groove is provided on the top surface of the filter base, a sealing ring is embedded inside the sealing groove, a sealing plate is provided on the top surface of the filter base, and threaded holes are provided at the four corners of the sealing groove, the sealing ring and the sealing plate, and bolts are threadedly connected between the three threaded holes.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the sealing performance of the filter seat is improved by the combined use of the sealing groove, sealing ring and sealing plate, preventing air leakage from the top of the filter seat during the filtration process. When it is necessary to clean and maintain the filter elements inside the filter seat, the bolts can be removed to separate the sealing plate from the filter seat, so as to facilitate subsequent maintenance work.

[0018] Furthermore, the top surface of the base is fixedly connected to the bottom surface of the two filter seats, and a control panel is connected to one side of the front of the base. The control panel is electrically connected to the flow meter, the two first solenoid valves and the two second solenoid valves via wires.

[0019] The beneficial effect of adopting the above-mentioned further solution is that, by setting up a control panel, and electrically connecting the control panel to the flow meter, the first solenoid valve, and the second solenoid valve, the front filter seat and the corresponding first and second solenoid valves on both sides are in the open state, while the rear filter seat and the corresponding first and second solenoid valves on both sides are in the closed state. One end of the exhaust pipe is connected to the gas turbine inlet. At this time, air is discharged through the intake pipe, the second flow pipe, the filter seat, the fourth flow pipe, and the exhaust pipe. Simultaneously, the flow meter at one end of the exhaust pipe monitors the air flow and transmits the flow data to the control panel. When the air flow data drops to the lowest value, the control panel controls the first solenoid valve at the second flow pipe and the second solenoid valve at the fourth flow pipe to close, and controls the first solenoid valve at the first flow pipe and the second solenoid valve at the third flow pipe to open, thereby changing the air flow path, so as to facilitate the operator to maintain the filter element inside the front filter seat.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: In this gas turbine inlet impurity filtration device, the first and second solenoid valves on both sides of the front filter seat are in the open state, while the first and second solenoid valves on both sides of the rear filter seat are in the closed state. One end of the exhaust pipe is connected to the gas turbine inlet. Air is then discharged through the intake pipe, the second flow pipe, the filter seat, the fourth flow pipe, and the exhaust pipe. Through the combined use of polyester fiber filter layers, glass fiber filter layers, synthetic fiber filter layers, and activated carbon adsorption layers, multi-stage filtration of air impurities is achieved. The polyester fiber filter layer can filter larger particulate impurities, the glass fiber filter layers and synthetic fiber filter layers can remove dust and particulate matter from the air, and the activated carbon adsorption layer can adsorb harmful gases and odors. Simultaneously, a flow meter at one end of the exhaust pipe... The system monitors airflow and transmits the data to the control panel. When the airflow drops to its lowest value, indicating blockage of the polyester fiber filter layer, glass fiber filter layer, synthetic fiber filter layer, or activated carbon adsorption layer in the filter housing currently available for airflow, the control panel closes the first solenoid valve at the second flow pipe and the second solenoid valve at the fourth flow pipe, and opens the first solenoid valve at the first flow pipe and the second solenoid valve at the third flow pipe. This alters the airflow path, directing airflow towards the rear filter housing. This facilitates maintenance of the filter elements inside the front filter housing by the operator, avoiding downtime. The bolts are removed to separate the top sealing plate of the front filter housing to be maintained from its corresponding filter housing. The corresponding partition can then be pulled out of the slot through the groove for cleaning and maintenance. Attached Figure Description

[0021] Figure 1 A three-dimensional structural schematic diagram of a gas turbine inlet impurity filtration device provided by this utility model;

[0022] Figure 2A three-dimensional structural diagram of the intake component and exhaust component of a gas turbine intake impurity filtration device provided by this utility model;

[0023] Figure 3 An exploded three-dimensional structural diagram of the filter assembly of a gas turbine inlet impurity filtration device provided by this utility model;

[0024] Figure 4 This utility model provides a gas turbine inlet impurity filtration device. Figure 3 Enlarged schematic diagram of structure A in the middle;

[0025] Figure 5 An exploded three-dimensional structural diagram of the filter seat of a gas turbine inlet impurity filtration device provided by this utility model.

[0026] In the diagram: 1. Base; 2. Filter assembly; 21. Filter seat; 22. Air inlet; 23. Square cavity; 24. Square seat; 25. Slot; 26. Partition; 27. Polyester fiber filter layer; 28. Glass fiber filter layer; 29. ​​Synthetic fiber filter layer; 210. Activated carbon adsorption layer; 211. Sealing groove; 212. Sealing ring; 213. Sealing plate; 214. Bolt; 3. Air intake assembly; 31. Air intake pipe; 32. First flow pipe; 33. Second flow pipe; 34. First solenoid valve; 4. Exhaust assembly; 41. Exhaust pipe; 42. Third flow pipe; 43. Fourth flow pipe; 44. Second solenoid valve; 45. Flow meter. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this application, unless otherwise stated, "multiple" means two or more.

[0029] Example 1

[0030] Please see Figures 1-5This utility model provides a technical solution: a gas turbine inlet impurity filtration device, including a base 1, a filter assembly 2, an intake assembly 3, and an exhaust assembly 4. The filter assembly 2 is disposed above the base 1, the intake assembly 3 is disposed on the outer side of the filter assembly 2, and the exhaust assembly 4 is disposed on the outer side of the filter assembly 2. The filter assembly 2 is used to filter air impurities, the intake assembly 3 is used to intake air into the filter assembly 2, and the exhaust assembly 4 is used to exhaust air from the filter assembly 2. The intake assembly 3 includes an intake pipe 31, and a first flow pipe 32 and a second flow pipe 33 are respectively connected to both sides of one side of the intake pipe 31. The first flow pipe 32 and the second flow pipe 33 are located away from the intake pipe 31. Each filter assembly 2 includes two filter seats 21, each with an air inlet 22 and an exhaust outlet on its outer sides. One end of each of the two first solenoid valves 34 is connected to one of the two air inlets 22. The exhaust assembly 4 includes an exhaust pipe 41, with a third flow pipe 42 and a fourth flow pipe 43 connected to both sides of one side of the exhaust pipe 41. A second solenoid valve 44 is installed at the end of each of the third and fourth flow pipes 42 away from the exhaust pipe 41. One end of each of the two second solenoid valves 44 is connected to one of the two exhaust outlets. A flow meter 45 is connected to the end of the exhaust pipe 41 away from the filter seat 21. The front filter seat... The first solenoid valve 34 and the second solenoid valve 44 on both sides of the filter seat 21 are in the open state, while the first solenoid valve 34 and the second solenoid valve 44 on both sides of the rear filter seat 21 are in the closed state. One end of the exhaust pipe 41 is connected to the gas turbine inlet 22. At this time, air is discharged through the intake pipe 31, the second flow pipe 33, the filter seat 21, the fourth flow pipe 43, and the exhaust pipe 41. At the same time, the flow meter 45 at one end of the exhaust pipe 41 monitors the air flow. When the air flow drops abnormally, that is, the polyester fiber filter layer 27, glass fiber filter layer 28, synthetic fiber filter layer 29, or activated carbon adsorption layer 210 in the filter seat 21 that is currently available for air flow is blocked. By setting a third flow pipe 42 and a fourth flow pipe 43, and installing a second solenoid valve 44 at one end of the third flow pipe 42 and the fourth flow pipe 43, when the filter element inside the front filter seat 21 needs cleaning and maintenance, the first solenoid valve 34 and the second solenoid valve 44 at the second flow pipe 33 and the fourth flow pipe 43 are closed, while the first solenoid valve 34 and the second solenoid valve 44 at the first flow pipe 32 and the third flow pipe 42 are opened, changing the air flow path, so that the air that originally flowed into the front filter seat 21 flows into the rear filter seat 21, thereby cleaning and maintaining the filter component 2 inside the front filter seat 21 and avoiding downtime operation.

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-5 This utility model provides a technical solution: a square cavity 23 is provided inside the filter seat 21, and a square seat 24 is provided inside the square cavity 23. Four slots 25 are provided near the upper end of the square seat 24. A partition 26 is slidably provided inside each of the four slots 25. The outer wall of the four partitions 26 near the upper end is slidably engaged with the inner wall of the four slots 25. A round hole is provided inside each of the four partitions 26. A polyester fiber filter layer 27, a glass fiber filter layer 28, a synthetic fiber filter layer 29, and an activated carbon adsorption layer 210 are respectively provided inside the four round holes. The top surface of each of the four partitions 26 is... The filter base 21 has a groove, and the outer wall of the square base 24 is clearance-fitted with the inner wall of the square cavity 23. The square base 24 has a circular cavity inside, and four slots 25 are connected to the circular cavity. The outer walls of the four partitions 26 near the bottom are clearance-fitted with the inner walls of the circular cavity. The top surface of the filter base 21 has a sealing groove 211, and a sealing ring 212 is embedded inside the sealing groove 211. The top surface of the filter base 21 has a sealing plate 213. Threaded holes are formed at the four corners of the sealing groove 211, sealing ring 212, and sealing plate 213. Bolts 214 are threadedly connected between three opposite threaded holes. The top surface of the base 1 is connected to the two... The bottom surface of the filter base 21 is fixedly connected, and a control panel is connected to one side of the front of the base 1. The control panel is electrically connected to the flow meter 45, the two first solenoid valves 34, and the two second solenoid valves 44 via wires. By setting a circular cavity that communicates with the slot 25, air can pass sequentially through the polyester fiber filter layer 27, the glass fiber filter layer 28, the synthetic fiber filter layer 29, and the activated carbon adsorption layer 210. Through the combined use of the polyester fiber filter layer 27, the glass fiber filter layer 28, the synthetic fiber filter layer 29, and the activated carbon adsorption layer 210, air impurities are effectively removed. The system employs multi-stage filtration. The polyester fiber filter layer 27 filters larger particulate impurities, while the glass fiber filter layer 28 and the synthetic fiber filter layer 29 remove dust and particulate matter from the air. The activated carbon adsorption layer 210 adsorbs harmful gases and odors. The partition 26 and the slot 25 slide together. When the polyester fiber filter layer 27, glass fiber filter layer 28, synthetic fiber filter layer 29, or activated carbon adsorption layer 210 needs to be replaced, the bolt 214 is removed to separate the sealing plate 213 from the filter seat 21, and the corresponding partition 26 is pulled out directly from the slot 25 through the groove for cleaning and maintenance.

[0033] Specifically, the working principle of this gas turbine inlet impurity filtration device is as follows: During use, the first solenoid valve 34 and the second solenoid valve 44 on both sides of the front filter seat 21 are open, while the first solenoid valve 34 and the second solenoid valve 44 on both sides of the rear filter seat 21 are closed. One end of the exhaust pipe 41 is connected to the gas turbine inlet 22. At this time, air is discharged through the intake pipe 31, the second flow pipe 33, the filter seat 21, the fourth flow pipe 43, and the exhaust pipe 41. Through the combined use of the polyester fiber filter layer 27, the glass fiber filter layer 28, the synthetic fiber filter layer 29, and the activated carbon adsorption layer 210, multi-stage filtration of air impurities is achieved. The polyester fiber filter layer 27 can filter larger particulate impurities, the glass fiber filter layer 28 and the synthetic fiber filter layer 29 can remove dust and particulate matter from the air, and the activated carbon adsorption layer 210 can adsorb harmful gases and odors. Simultaneously, the flow meter 45 at one end of the exhaust pipe 41... Airflow is monitored and the flow data is transmitted to the control panel. When the airflow data drops to the minimum value, i.e., the polyester fiber filter layer 27, glass fiber filter layer 28, synthetic fiber filter layer 29, or activated carbon adsorption layer 210 in the filter seat 21 where airflow is currently available is blocked, the control panel controls the first solenoid valve 34 at the second flow pipe 33 and the second solenoid valve 44 at the fourth flow pipe 43 to close, and controls the first solenoid valve 34 at the first flow pipe 32 and the second solenoid valve 44 at the third flow pipe 42 to open, thereby changing the airflow path and causing air to flow into the rear filter seat 21. This makes it easier for the operator to maintain the filter elements inside the front filter seat 21 and avoid downtime. The bolt 214 is removed to separate the top sealing plate 213 of the front filter seat 21 to be maintained from its corresponding filter seat 21. The corresponding partition 26 is then pulled out from the slot 25 through the groove to achieve cleaning and maintenance.

[0034] In the embodiments provided in this application, it should be understood that the disclosed systems, modules, and methods can be implemented in other ways. For example, the module embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between modules or units, and may be electrical, mechanical, or other forms.

[0035] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. This application is not limited to the exact structures described above and illustrated in the accompanying drawings, and it should not be considered that the specific implementation of this application is limited to these descriptions. For those skilled in the art, various changes and modifications made without departing from the concept of this application should be considered to fall within the protection scope of this application.

Claims

1. A gas turbine inlet impurity filtration device, characterized in that, The system includes a base (1), a filter assembly (2), an air intake assembly (3), and an exhaust assembly (4). The filter assembly (2) is located above the base (1), the air intake assembly (3) is located on the outer side of the filter assembly (2), and the exhaust assembly (4) is located outside the filter assembly (2). The filter assembly (2) is used to filter air impurities, the air intake assembly (3) is used to intake air into the filter assembly (2), and the exhaust assembly (4) is used to exhaust air from the filter assembly (2). The air intake assembly (3) includes an air intake pipe. (31) The first flow pipe (32) and the second flow pipe (33) are respectively connected to one side of the air intake pipe (31). The first flow pipe (32) and the second flow pipe (33) are each equipped with a first solenoid valve (34) at the end away from the air intake pipe (31). The filter assembly (2) includes two filter seats (21). The two filter seats (21) are respectively provided with an air inlet (22) and an exhaust port on their outer sides. One end of the two first solenoid valves (34) is respectively connected to the two air inlets (22).

2. The gas turbine inlet impurity filtration device according to claim 1, characterized in that, The exhaust assembly (4) includes an exhaust pipe (41). A third flow pipe (42) and a fourth flow pipe (43) are respectively connected to both sides of one side of the exhaust pipe (41). A second solenoid valve (44) is installed at the end of the third flow pipe (42) and the fourth flow pipe (43) away from the exhaust pipe (41). One end of the two second solenoid valves (44) is connected to two exhaust ports respectively.

3. The gas turbine inlet impurity filtration device according to claim 2, characterized in that, The exhaust pipe (41) is connected to a flow meter (45) at the end away from the filter seat (21).

4. The gas turbine inlet impurity filtration device according to claim 1, characterized in that, The filter seat (21) has a square cavity (23) inside, and a square base (24) is provided inside the square cavity (23). Four slots (25) are provided near the upper end of the square base (24). A partition (26) is slidably provided inside each of the four slots (25). The outer wall of the four partitions (26) near the upper end is slidably engaged with the inner wall of the four slots (25). A round hole is provided inside each of the four partitions (26). A polyester fiber filter layer (27), a glass fiber filter layer (28), a synthetic fiber filter layer (29), and an activated carbon adsorption layer (210) are provided inside the four round holes respectively. A groove is provided on the top surface of each of the four partitions (26).

5. The gas turbine inlet impurity filtration device according to claim 4, characterized in that, The outer wall of the square base (24) is fitted with the inner wall of the square cavity (23) with a clearance. A circular cavity is opened inside the square base (24). All four slots (25) are connected to the circular cavity. The outer walls of the four partitions (26) near the bottom are fitted with the inner walls of the circular cavity with a clearance.

6. The gas turbine inlet impurity filtration device according to claim 5, characterized in that, The top surface of the filter seat (21) is provided with a sealing groove (211), and a sealing ring (212) is embedded inside the sealing groove (211). The top surface of the filter seat (21) is provided with a sealing plate (213). Threaded holes are provided at the four corners of the sealing groove (211), the sealing ring (212) and the sealing plate (213), and bolts (214) are threadedly connected between the three threaded holes.

7. The gas turbine inlet impurity filtration device according to claim 6, characterized in that, The top surface of the base (1) is fixedly connected to the bottom surface of the two filter seats (21).

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