Inlet air filtering system with pre-dedusting function

Abstract

The invention discloses an air inlet filtering system with a pre-dedusting function, and relates to the technical field of gas turbine air inlet filtering, the air inlet filtering system comprises a pre-adsorption structure and a filtering structure, the pre-adsorption structure comprises an adsorption cylinder, a dust collecting hopper is arranged at the lower end of the adsorption cylinder, a dust discharging port is formed in the lower end of the dust collecting hopper, an electrostatic adsorption assembly is arranged on the adsorption cylinder, and the filtering structure comprises a filtering box. A filter screen is arranged in the filter box through a mounting structure, an automatic replacement structure for automatically replacing the filter screen is arranged on the filter box, and the air outlet end of the filter structure is communicated with an air inlet of the gas turbine. By means of the automatic replacement structure, when the filter screen is blocked, the resistance of gas flowing through the filter screen is increased, the filter screen is driven to move, when the filter screen is right opposite to the standby filter screen, the standby filter screen extrudes the filter screen from the second inserting opening, the standby filter screen is made to replace the filter screen, and therefore automatic replacement of the filter screen is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of gas turbine air intake filtration, in particular to an air intake filtration system with a pre-dust removal function. Background Art

[0002] As a highly efficient energy power device, gas turbines are widely used in the fields of electricity, aviation, ships, heavy vehicles, etc. Their air intake systems need to filter out impurities in the air to improve the air quality at the compressor inlet, while keeping the inlet pressure drop within a certain range to ensure the performance of the gas turbine.

[0003] The general air intake filtration system uses a filter for filtering. As the operating time increases, the filter becomes clogged, resulting in an increase in the intake pressure drop, affecting the economy and safety of the gas turbine. When the filter is clogged, the machine needs to be shut down for cleaning, which is not conducive to the normal operation of the gas turbine.

[0004] Based on this, air intake filtration systems with pre-dust removal functions are now available, which can eliminate the disadvantages of existing devices. Summary of the invention

[0005] The object of the present invention is to provide an air intake filter system with a pre-dust removal function to solve the problem in the background technology that cleaning the filter is not conducive to the normal operation of the gas turbine.

[0006] To achieve the above object, the present invention provides the following technical solutions: An air intake filtration system with a pre-dust removal function comprises a pre-adsorption structure and a filtration structure, the pre-adsorption structure and the filtration structure are connected via a connecting pipe, the pre-adsorption structure comprises an adsorption cylinder, an adsorption cylinder air inlet and an adsorption cylinder air outlet are provided on the adsorption cylinder, the adsorption cylinder air outlet is connected to the connecting pipe, an ash collecting hopper is provided at the lower end of the adsorption cylinder, an ash discharge port is provided at the lower end of the ash collecting hopper, an electrostatic adsorption component is provided on the adsorption cylinder, the filtration structure comprises a filter box, a filter box air inlet and a filter box air outlet are provided on the filter box, the filter box air inlet is connected to the connecting pipe, a filter net is provided in the filter box via an installation structure, an automatic replacement structure for automatically replacing the filter net is provided on the filter box, and the air outlet end of the filter structure is connected to the air intake of a gas turbine.

[0007] On the basis of the above technical solution, the present invention also provides the following optional technical solution: In an optional solution: the electrostatic adsorption component includes an insulating sleeve that is arranged through the upper end of the adsorption cylinder, and an electrode is connected through the insulating sleeve. The electrode is electrically connected to the negative electrode of the power supply, and the adsorption cylinder is electrically connected to the positive electrode of the power supply.

[0008] In an optional solution: the outer side of the adsorption cylinder is insulated and connected to a vibration motor that works intermittently.

[0009] In an optional scheme: the mounting structure includes a first socket and a second socket symmetrically arranged on the filter box, the size of the first socket matches the filter screen, the size of the second socket matches the filter screen, the filter box is provided with a first slide slot and a second slide slot, the second slide slot is perpendicular to and connected to the first slide slot, a filter screen is slidably arranged in the filter box, a first slider is connected to the filter screen, the first slide slot and the second slide slot both match the first slider, a limited position frame is connected in the filter box, the filter screen contacts the limited position frame, the side of the filter screen away from the limited position frame contacts the pressure frame, the pressure frame is slidably arranged in the filter box, a support frame is connected in the filter box, four return springs are connected between the support frame and the pressure frame, and the four return springs are distributed at the four corners of the support frame.

[0010] In an optional scheme: the automatic replacement structure includes a first extension plate and a second extension plate connected to the filter box, the first extension plate is located directly below the second extension plate, a spare filter screen is slidably provided between the first extension plate and the second extension plate, a push plate is slidably provided between the first extension plate and the second extension plate, the push plate contacts the side of the spare filter screen away from the filter box, a third slide groove is provided on the first extension plate, a second slide block matching the third slide groove is provided on the push plate, a fourth slide groove is provided on the second extension plate, a third slide block matching the fourth slide groove is provided on the push plate, and force-applying components are symmetrically provided on the push plate.

[0011] In an optional solution: the force-applying assembly includes a connecting plate connected to the push plate, a fixing plate is connected to the filter box, and a force-applying spring is connected between the fixing plate and the connecting plate.

[0012] In an optional solution: a handle is connected to the push plate, two placement plates are symmetrically arranged on the filter box, the spacing between the two placement plates matches the spacing between the two connecting plates, and a guide block is arranged at one end of the placement plate away from the filter box.

[0013] In an optional solution: a proximity switch is provided on the filter box at a position corresponding to the connecting plate, an audible and visual alarm is connected to the filter box, and the proximity switch is electrically connected to the audible and visual alarm.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a pre-adsorption structure to ionize the air in the adsorption cylinder, so that the particles in the intake air are charged and approach the adsorption cylinder and adsorbed on the adsorption cylinder, thereby preliminarily purifying the intake air of the gas turbine, greatly reducing the content of particles in the intake air, and increasing the service life of the filter in the filter structure.

[0015] 2. The present invention provides an automatic replacement structure. When the filter is clogged, the resistance of the gas flowing through the filter becomes larger, driving the filter to move. When the filter is facing the spare filter, the spare filter squeezes the filter out of the second socket, so that the spare filter replaces the filter, thereby realizing automatic replacement of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the filter screen of the present invention.

[0018] Figure 3 For the present invention Figure 2 A is a partial enlarged schematic diagram of the middle part.

[0019] Figure 4 This is a schematic diagram of the second socket of the present invention.

[0020] Figure 5 It is a schematic diagram of the push plate structure of the present invention.

[0021] Figure 6 It is a schematic diagram of the first sliding block of the present invention.

[0022] Figure 7 This is a schematic diagram of the first socket of the present invention.

[0023] Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of B in the figure.

[0024] Notes on reference numerals: 101, connecting pipe; 102, adsorption cylinder; 103, ash hopper; 104, ash discharge port; 105, vibration motor; 106, air inlet of adsorption cylinder; 107, air outlet of adsorption cylinder; 108, insulating sleeve; 109, electrode; 201, filter box; 202, air inlet of filter box; 203, air outlet of filter box; 204, limit frame; 205, filter screen; 206, pressure frame; 207, return spring; 208, support frame; 209, first slide slot; 210, second Slide groove; 211, first slider; 212, first socket; 213, second socket; 301, first extension plate; 302, third slide groove; 303, second extension plate; 304, fourth slide groove; 305, push plate; 306, second slider; 307, third slider; 308, connecting plate; 309, fixing plate; 310, force spring; 311, spare filter; 401, handle; 402, placement plate; 403, guide block; 404, proximity switch; 405, sound and light alarm. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] In one embodiment, Figure 1-Figure 8 As shown, an air intake filtration system with a pre-dust removal function includes a pre-adsorption structure and a filtering structure, the pre-adsorption structure and the filtering structure are connected through a connecting pipe 101, the pre-adsorption structure includes an adsorption cylinder 102, the adsorption cylinder 102 is provided with an adsorption cylinder air inlet 106 and an adsorption cylinder air outlet 107, the adsorption cylinder air outlet 107 is connected to the connecting pipe 101, an ash collecting hopper 103 is provided at the lower end of the adsorption cylinder 102, an ash discharge port 104 is provided at the lower end of the ash collecting hopper 103, an electrostatic adsorption component is provided on the adsorption cylinder 102, the filtering structure includes a filter box 201, the filter box 201 is provided with a filter box air inlet 202 and a filter box air outlet 203, the filter box air inlet 202 is connected to the connecting pipe 101, a filter screen 205 is provided in the filter box 201 through a mounting structure, the filter box 201 is provided with an automatic replacement structure for automatically replacing the filter screen 205, and the air outlet end of the filtering structure is connected to the air inlet of the gas turbine.

[0027] In this embodiment, the pre-adsorption structure performs preliminary purification of the intake air of the gas turbine through the principle of electrostatic adsorption, greatly reduces the content of particulate matter in the intake air, and increases the service life of the filter in the filtering structure. Through the automatic replacement structure, the filter is automatically replaced when the filter is blocked, which is beneficial to maintaining the normal operation of the gas turbine.

[0028] In one embodiment, Figure 2 As shown, the electrostatic adsorption component includes an insulating sleeve 108 that is arranged through the upper end of the adsorption cylinder 102, and an electrode 109 is connected through the insulating sleeve 108. The electrode 109 is electrically connected to the negative electrode of the power supply, and the adsorption cylinder 102 is electrically connected to the positive electrode of the power supply. The air in the adsorption cylinder 102 is ionized, so that the particulate matter in the intake air is charged and approaches the adsorption cylinder 102 and is adsorbed on the adsorption cylinder 102.

[0029] In one embodiment, Figure 1 As shown, the outer side of the adsorption cylinder 102 is insulated and connected with an intermittently working vibration motor 105, which causes the dust adsorbed and accumulated on the adsorption cylinder 102 to fall down through vibration.

[0030] In one embodiment, Figure 2 , Figure 3 , Figure 7 , Figure 8As shown, the mounting structure includes a first socket 212 and a second socket 213 symmetrically arranged on the filter box 201, the size of the first socket 212 matches the filter screen 205, the size of the second socket 213 matches the filter screen 205, a first slide 209 and a second slide 210 are arranged in the filter box 201, the second slide 210 is perpendicular to and connected to the first slide 209, a filter screen 205 is slidably arranged in the filter box 201, a first slider 211 is connected to the filter screen 205, the first slide 209 and the second slide 210 are both matched with the first slider 211, a limited position frame 204 is connected in the filter box 201, the filter screen 205 contacts the limited position frame 204, and the filter screen 205 is away from the limited position frame 204. One side contacts with the pressing frame 206, and the pressing frame 206 is slidably arranged in the filter box 201. A support frame 208 is connected in the filter box 201. Four return springs 207 are connected between the support frame 208 and the pressing frame 206. The four return springs 207 are distributed at the four corners of the support frame 208. The filter screen 205 is inserted into the filter box 201 from the first socket 212. At this time, the first slider 211 slides in the first slide groove 209. When the position of the first slider 211 reaches the intersection of the first slide groove 209 and the second slide groove 210, under the action of the pressing frame 206, the first slider 211 enters the second slide groove 210 and slides, so that the filter screen 205 is attached to the limit frame 204.

[0031] In one embodiment, Figure 1 , Figure 4 , Figure 5 and Figure 7As shown, the automatic replacement structure includes a first extension plate 301 and a second extension plate 303 connected to the filter box 201, the first extension plate 301 is located directly below the second extension plate 303, a spare filter screen 311 is slidably provided between the first extension plate 301 and the second extension plate 303, a push plate 305 is slidably provided between the first extension plate 301 and the second extension plate 303, the push plate 305 is in contact with a side of the spare filter screen 311 away from the filter box 201, a third slide groove 302 is provided on the first extension plate 301, a second slider 306 matching the third slide groove 302 is provided on the push plate 305, a fourth slide groove 304 is provided on the second extension plate 303, a third slider 307 matching the fourth slide groove 304 is provided on the push plate 305, and a third slider 308 matching the third slide groove 308 is provided on the push plate 305. A force-applying assembly is provided, which includes a connecting plate 308 connected to the push plate 305, a fixed plate 309 connected to the filter box 201, and a force-applying spring 310 connected between the fixed plate 309 and the connecting plate 308. The force-applying spring 310 pulls the push plate 305 through the connecting plate 308, so that the push plate 305 squeezes the spare filter 311, that is, the spare filter 311 squeezes the filter 205. When the filter is blocked, the resistance of the gas flowing through the filter 205 becomes larger, so that the filter 205 slides in the filter box 201. When the filter 205 is facing the spare filter 311, the spare filter 311 squeezes the filter 205 out of the second socket 213, so that the spare filter 311 replaces the filter 205, thereby realizing automatic replacement of the filter.

[0032] In one embodiment, Figure 1 and Figure 5 As shown, a handle 401 is connected to the push plate 305, and two placement plates 402 are symmetrically arranged on the filter box 201. The spacing between the two placement plates 402 matches the spacing between the two connecting plates 308. A guide block 403 is provided at the end of the placement plate 402 away from the filter box 201. After the automatic replacement structure is triggered, the handle 401 is pulled, and the holes on the connecting plate 308 correspond to the guide block 403, and the push plate 305 is temporarily placed on the placement plate 402. At the same time, a new spare filter screen 311 is installed between the first extension plate 301 and the second extension plate 303, and then the push plate 305 is put back between the first extension plate 301 and the second extension plate 303 to prepare for the next automatic replacement of the filter screen.

[0033] In one embodiment, Figure 2 and Figure 7 As shown, a proximity switch 404 is provided at a position corresponding to the connecting plate 308 on the filter box 201, and a sound and light alarm 405 is connected to the filter box 201. The proximity switch 404 is electrically connected to the sound and light alarm 405. After the automatic replacement structure is triggered, the proximity switch 404 senses the approach of the connecting plate 308 and energizes the sound and light alarm 405, so that the staff can notice and reset the automatic replacement structure in time, so as to facilitate the next replacement of the filter.

[0034] The above-mentioned embodiment discloses an air intake filtration system with a pre-dust removal function, wherein the electrode 109 ionizes the air in the adsorption cylinder 102, so that the particles in the intake air are charged and approach the adsorption cylinder 102 and adsorbed on the adsorption cylinder 102, and the vibration motor 105 vibrates intermittently, so that the dust adsorbed and accumulated on the adsorption cylinder 102 falls down and is finally discharged from the ash discharge port 104, thereby performing preliminary purification on the intake air of the gas turbine, greatly reducing the content of particles in the intake air, and increasing the service life of the filter in the filter structure. When the filter is clogged, the resistance of the gas flowing through the filter 205 becomes larger, causing the filter 205 to slide in the filter box 201. When the filter 205 is facing the spare filter 311, the spare filter 311 pulls the filter 205 out of the first The second socket 213 is squeezed out, so that the spare filter 311 replaces the filter 205, thereby realizing automatic replacement of the filter. After the automatic replacement structure is triggered, the handle 401 is pulled, and the holes on the connecting plate 308 correspond to the guide block 403, and the push plate 305 is temporarily placed on the placement plate 402. At the same time, the new spare filter 311 is installed between the first extension plate 301 and the second extension plate 303, and then the push plate 305 is put back between the first extension plate 301 and the second extension plate 303 to prepare for the next automatic replacement of the filter. After the automatic replacement structure is triggered, the proximity switch 404 senses the approach of the connecting plate 308 and energizes the sound and light alarm 405, so that the staff can notice and reset the automatic replacement structure in time, which is convenient for the next replacement of the filter.

[0035] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. Air intake filtration system with pre-dust removal function, characterized in that: The invention comprises a pre-adsorption structure and a filtering structure, wherein the pre-adsorption structure and the filtering structure are connected via a connecting pipe (101), the pre-adsorption structure comprises an adsorption cylinder (102), the adsorption cylinder (102) is provided with an adsorption cylinder air inlet (106) and an adsorption cylinder air outlet (107), the adsorption cylinder air outlet (107) is connected to the connecting pipe (101), an ash collecting hopper (103) is provided at the lower end of the adsorption cylinder (102), an ash discharging port (104) is provided at the lower end of the ash collecting hopper (103), and the adsorption cylinder (102) is provided with a ash discharging port (104). 2) is provided with an electrostatic adsorption component, the filtering structure comprises a filtering box (201), the filtering box (201) is provided with a filtering box air inlet (202) and a filtering box air outlet (203), the filtering box air inlet (202) is connected to the connecting pipe (101), a filtering net (205) is provided in the filtering box (201) via a mounting structure, an automatic replacement structure for automatically replacing the filtering net (205) is provided on the filtering box (201), and the air outlet end of the filtering structure is connected to the air inlet of the gas turbine.

2. The air intake filtration system with pre-dust removal function according to claim 1, characterized in that: The electrostatic adsorption component comprises an insulating sleeve (108) penetrating the upper end of the adsorption cylinder (102), an electrode (109) penetrating the inside of the insulating sleeve (108), the electrode (109) being electrically connected to the negative pole of a power source, and the adsorption cylinder (102) being electrically connected to the positive pole of a power source.

3. The air intake filtration system with pre-dust removal function according to claim 2, characterized in that: The outer side of the adsorption cylinder (102) is insulated and connected to a vibration motor (105) that operates intermittently.

4. The air intake filtration system with pre-dust removal function according to claim 1, characterized in that: The mounting structure comprises a first socket (212) and a second socket (213) symmetrically arranged on the filter box (201); the size of the first socket (212) matches the filter screen (205); the size of the second socket (213) matches the filter screen (205); a first slide groove (209) and a second slide groove (210) are arranged in the filter box (201); the second slide groove (210) is perpendicular to and communicates with the first slide groove (209); a filter screen (205) is slidably arranged in the filter box (201); the filter screen (205) is connected to a first slider (211); the first slide groove (209) and the second slide groove (210) are arranged to slide in the filter box (201); The two slide grooves (210) are matched with the first sliding block (211); a limit frame (204) is connected inside the filter box (201); the filter screen (205) contacts the limit frame (204); a side of the filter screen (205) away from the limit frame (204) contacts a pressing frame (206); the pressing frame (206) is slidably arranged inside the filter box (201); a support frame (208) is connected inside the filter box (201); four return springs (207) are connected between the support frame (208) and the pressing frame (206); the four return springs (207) are distributed at four corners of the support frame (208).

5. The air intake filtration system with pre-dust removal function according to claim 1, characterized in that: The automatic replacement structure comprises a first extension plate (301) and a second extension plate (303) connected to the filter box (201); the first extension plate (301) is located directly below the second extension plate (303); a spare filter screen (311) is slidably provided between the first extension plate (301) and the second extension plate (303); a push plate (305) is slidably provided between the first extension plate (301) and the second extension plate (303); the push plate (305) contacts a side of the spare filter screen (311) away from the filter box (201); a third slide groove (302) is provided on the first extension plate (301); a second slider (306) matching the third slide groove (302) is provided on the push plate (305); a fourth slide groove (304) is provided on the second extension plate (303); a third slider (307) matching the fourth slide groove (304) is provided on the push plate (305); and a force application component is symmetrically provided on the push plate (305).

6. The air intake filtration system with pre-dust removal function according to claim 5, characterized in that: The force-applying assembly comprises a connecting plate (308) connected to the push plate (305); a fixing plate (309) is connected to the filter box (201); and a force-applying spring (310) is connected between the fixing plate (309) and the connecting plate (308).

7. The air intake filtration system with pre-dust removal function according to claim 6, characterized in that: The push plate (305) is connected to a handle (401), and two placement plates (402) are symmetrically provided on the filter box (201). The spacing between the two placement plates (402) matches the spacing between the two connection plates (308), and a guide block (403) is provided at one end of the placement plate (402) away from the filter box (201).

8. The air intake filtration system with pre-dust removal function according to claim 6, characterized in that: A proximity switch (404) is provided on the filter box (201) at a position corresponding to the connection plate (308), and an audible and visual alarm (405) is connected to the filter box (201). The proximity switch (404) is electrically connected to the audible and visual alarm (405).

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