Inlet air back-blowing equipment of gas turbine power plant

Abstract

The invention belongs to the technical field of gas compressors, and particularly relates to gas inlet reverse blowing equipment of a gas turbine power plant, which comprises a gas inlet mechanism, a gas outlet mechanism and a gas outlet mechanism, the device comprises an air inlet mechanism, an auxiliary mechanism, the outer wall of the auxiliary mechanism is connected with the inner wall of the air inlet mechanism, filter elements are uniformly arranged on a mounting plate, a dust collection mechanism is mounted on the side, away from the auxiliary mechanism, of the inner wall of the air inlet mechanism, and the dust collection mechanism is used for collecting dust at the bottom of the air inlet mechanism. Dust on the surfaces of the filter elements enters the dust collection bag along the shielding assembly and finally deposits to the bottom of the air inlet chamber through the dust collection bag, the guide assembly keeps the bottom of the dust collection bag in an open state, the dust collection bag can be accumulated in the guide assembly, and the filter elements are cleaned row by row from top to bottom; the cleaned filter element above is prevented from being polluted again by dust on the surface of the uncleaned filter element below, so that the flying of the dust and the circulation of the dust in the air are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of compressors, and specifically relates to an intake air reverse purge device for a gas turbine power plant. Background Art

[0002] The compressor intake air system of a gas turbine power plant is an important system of the gas turbine. The fouling of the intake air system filter will cause the filter differential pressure to increase, the work consumption of the compressor to increase, the output of the unit to decrease, and the energy consumption to increase. Currently, gas turbine power plants are generally designed with a compressor intake air duct reverse purge system, whose function is to introduce a compressed air pipeline and operate the reverse purge device when the unit is shut down, and introduce compressed air from the outlet of the coarse filter of the intake air duct to the inlet to blow off the dust adhered to the surface of the coarse filter.

[0003] However, since the current reverse purge air pressure is fixed and cannot be adjusted according to the degree of filter fouling, and the layout of the gas turbine intake air system is indoors, the dust blown off by the fine filter cannot be discharged outdoors, and the dust continuously circulates in the intake air chamber, which has a certain impact on the service life of the filter element. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the technical solution adopted by the present invention to solve its technical problems is: an intake air reverse purge device for a gas turbine power plant, including: An intake mechanism, on the inner wall of which a mounting plate is provided; An auxiliary mechanism, the outer wall of which is connected to the inner wall of the intake mechanism; The auxiliary mechanism includes: An intake pipe, both ends of which are connected to the inner wall of the intake mechanism; A mounting block, the inner wall of which is connected to the outer wall of the intake pipe, and guide rods are symmetrically arranged on the outer wall of the mounting block; An elastic ring, which is sleeved on the outer wall of the guide rod and is used to strike the filter element.

[0005] Furthermore, filter elements are uniformly arranged on the mounting plate, the axis of the filter element corresponds to the axis of the auxiliary mechanism, baffles are uniformly arranged on the outer wall of the intake mechanism close to the dust collection mechanism, and a dust collection mechanism is installed on the side of the inner wall of the intake mechanism far from the auxiliary mechanism, and the dust collection mechanism is used to concentrate the dust at the bottom of the intake mechanism.

[0006] Furthermore, the air intake mechanism includes: an air intake chamber, the outer wall of the air intake chamber is connected to the outer wall of the baffle, a dust removal port is opened on the side of the bottom of the air intake chamber, and a slide groove is symmetrically opened on the inner wall of the air intake chamber; a scraper, both ends of the scraper are slidably connected to the inner wall of the air intake chamber, the outer wall of the scraper is fixedly connected to an inclined rod, and the outer wall of the inclined rod is slidably connected to the inner wall of the air intake chamber; a movable rod, the bottom of the movable rod is rotatably connected to the end of the inclined rod away from the scraper, so that the movable rod pushes the inclined rod to be inserted into the interior of the air intake chamber, thereby driving the scraper to slide along the slide groove, scraping the dust at the bottom of the air intake chamber out from the dust removal port, completing the cleaning of the dust inside the air intake chamber, and avoiding dust from always accumulating inside the air intake chamber, resulting in the subsequent air being unable to be effectively filtered.

[0007] Furthermore, the auxiliary mechanism also includes: a connecting shaft, both ends of the connecting shaft are rotatably connected to the inner wall of the mounting block, the outer surface of the connecting shaft is connected to a connecting rope, and the end of the connecting rope away from the connecting shaft is installed on the outer wall of the elastic ring; a semicircular plate, the outer wall of the elastic ring is installed with a motor, the semicircular plate is installed on the outer wall of the motor, and an air outlet is arranged on a side of the mounting block close to the semicircular plate, so that the shape design of the semicircular plate can adapt to not being blocked by the air outlet and the guide rod when the semicircular plates are merged, and can fit each other, and its outer diameter is smaller than the outer diameter of the elastic ring, and blocks the middle space of the elastic ring when it is unfolded, so that the elastic ring and the semicircular plate are impacted by the gas and move along the guide rod, thereby compensating for the defect that the gas pressure cannot be changed according to the accumulation of dust, and is convenient for thoroughly cleaning the surface of the filter element.

[0008] Furthermore, the dust collecting mechanism comprises: a slide rail, which is symmetrically arranged on the inner wall of the air inlet chamber near the baffle, and the outer wall of the slide rail is slidably connected with a slider; a shielding assembly, the outer wall of the shielding assembly is rotatably connected to the opposite side of the slider, and the shielding assembly is used to separately process and collect the dust blown back from each row of filter elements; the dust collecting mechanism also comprises: a dust bag, the top of the dust bag is mounted on the bottom of the shielding assembly, and the dust bag is used to make the dust blown back fall from the inside and finally concentrate it at the bottom of the air inlet chamber; a guide assembly, which is mounted on the bottom of the inner wall of the air inlet chamber, and the guide assembly is mounted on the bottom of the inner wall of the air inlet chamber. The guide assembly is used to open the bottom opening of the dust bag, so that the dust on the surface of the filter element enters the dust bag along the shielding assembly and is finally deposited to the bottom of the air intake chamber through the dust bag. The guide assembly keeps the bottom of the dust bag in an open state. During the gradual downward movement of the shielding assembly, the dust bag can be accumulated inside the guide assembly, and the filter elements are cleaned row by row from top to bottom to prevent the cleaned filter elements above from being contaminated again by the dust on the surface of the uncleaned filter elements below. By blocking and collecting dust in each row of the filter elements, the flying of dust and its circulation in the air are reduced, which facilitates the rapid concentration of dust and keeps the environment in the air intake chamber clean.

[0009] Further, the shielding assembly includes: a rotating plate symmetrically installed on the outer wall of the slider. The rotating plate is rotatably connected to the outer wall of the slider. A rotating rod is rotatably connected to the opposite side of the rotating plate. A limiting rod is fixedly connected to one side of the outer wall of the rotating plate close to the rotating rod; an elastic plate installed on the outer wall of the rotating rod, and the elastic plate is used to block each row of filter elements; an extension plate installed on the side of the rotating rod away from the elastic plate, so that the dust on the surface of the filter element can be concentrated on the lower elastic plate and finally enter the dust collection bag. During the cleaning of each row, both the upper and lower parts are blocked to prevent the filter element that has been cleaned above from being contaminated by the dust on the surface of the filter element below again, and at the same time, the dust can be quickly concentrated and dropped for collection, improving the cleaning efficiency.

[0010] Further, the guiding assembly includes: a mounting rod, the outer wall of which is fixedly connected to the inner wall of the air inlet chamber; a bent rod arranged at the bottom of the mounting rod, and the bent rod is used to support the bottom of the dust collection bag so that the dust collection bag accumulates on the bent rod; the guiding assembly further includes: a driving seat installed at one end of the bent rod away from the mounting rod, and a rotating shaft is rotatably connected to the inner wall of the driving seat; a swinging strip evenly arranged on the outer wall of the rotating shaft, and the swinging strip is used to open the bottom of the dust collection bag so that the dust collection bag can be kept in an open state and accumulate on the bent rod. The swinging strip is made of a flexible material with a certain weight, and the rotating directions of the left and right groups of rotating shafts are opposite, so that the bottom opening of the dust collection bag can always be kept open during the downward accumulation process, preventing the bottom of the dust collection bag from closing and fitting together during collection, resulting in the dust not being able to be quickly concentrated at the bottom of the air inlet chamber.

[0011] The beneficial effects of the present invention are as follows: 1. By setting up the dust collection mechanism in the present invention, the dust on the surface of the filter element enters the dust collection bag along the shielding assembly and finally deposits at the bottom of the air inlet chamber through the dust collection bag. The guiding assembly keeps the bottom of the dust collection bag in an open state. During the gradual downward movement of the shielding assembly, the dust collection bag can accumulate inside the guiding assembly, and the filter elements are cleaned row by row from top to bottom, so that the filter elements that have been cleaned above are not contaminated by the dust on the surface of the filter elements that have not been cleaned below again. By blocking and centrally collecting the dust of each row of filter elements, the scattering and circulation of dust in the air are reduced, facilitating the quick concentration of dust and keeping the environment in the air inlet chamber clean.

[0012] 2. The present invention sets an auxiliary mechanism, and the motor drives the semicircular plate to open, so that the air outlet blows air to the inside of the filter element again. Since the motor needs to drive the semicircular plates to approach each other, they will be blocked by the guide rod and the air outlet. Therefore, the shape design of the semicircular plates can adapt to the situation that when the semicircular plates are merged, they are not blocked by the air outlet and the guide rod, and can fit each other. The outer diameter of the semicircular plates is smaller than the outer diameter of the elastic ring. When unfolded, the middle space of the elastic ring is blocked, so that the elastic ring and the semicircular plates are impacted by the gas and move along the guide rod, thereby compensating for the defect that the gas pressure cannot be changed according to the accumulation of dust, and facilitating the thorough cleaning of the surface of the filter element.

[0013] 3. The present invention provides a shielding component, and the elastic plate can be elastically inserted into the middle of the two rows of filter elements to separate the two rows of filter elements. When cleaning each row of filter elements from top to bottom, the limit rod can prevent the extension plate from rotating too much, which would cause the elastic plate to be unable to be inserted into the middle of the filter element, so that the dust on the surface of the filter element can be concentrated on the elastic plate below and finally enter the dust collecting bag. When cleaning each row, the upper and lower parts are kept blocked to prevent the filter element that has been cleaned above from being contaminated by the dust on the surface of the filter element below again. At the same time, the dust can be quickly collected and concentrated, thereby improving the cleaning efficiency.

[0014] 4. The present invention sets a guide component, and the internal drive of the driving seat drives the rotating shaft to rotate, so that the swing bar is swung to the inner wall of the dust bag. The material of the swing bar is a flexible material with a certain weight. The rotation directions of the left and right sets of rotating shafts are opposite, so that the bottom opening of the dust bag can always be kept in a stretched state during the downward accumulation process, avoiding the bottom of the dust bag from being close together during collection, resulting in the dust being unable to quickly gather at the bottom of the air inlet chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the air intake mechanism of the present invention; Figure 4 It is a partial structural schematic diagram of the auxiliary mechanism of the present invention; Figure 5 It is a structural schematic diagram of the auxiliary mechanism of the present invention; Figure 6 is a rear view of the auxiliary mechanism of the present invention; Figure 7 It is a structural schematic diagram of the dust collecting mechanism of the present invention; Figure 8 is a schematic structural diagram of a shielding assembly of the present invention; Figure 9 It is a structural schematic diagram of the guide assembly of the present invention; Figure 10 The present inventionFigure 9 Schematic diagram of the structure at A in the middle.

[0016] In the figure: 1, intake mechanism; 101, intake chamber; 102, dust removal port; 103, chute; 104, scraper; 105, inclined rod; 106, movable rod; 2, baffle; 3, mounting plate; 4, filter element; 5, auxiliary mechanism; 501, intake pipe; 502, mounting block; 503, air outlet; 504, connecting shaft; 505, connecting rope; 506, guide rod; 507, elastic ring; 508, motor; 509, semi-circular plate; 6, dust collection mechanism; 601, slide rail; 602, slider; 603, shielding component; 6031, rotating plate; 6032, rotating rod; 6033, elastic plate; 6034, lengthening plate; 6035, limiting rod; 604, dust collection bag; 605, guiding component; 6051, mounting rod; 6052, bent rod; 6053, driving seat; 6054, rotating shaft; 6055, throwing strip. Detailed implementation manners

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0018] Embodiment 1, please refer to Figures 1 - 7 , the present invention provides a technical solution: an intake anti-blowing device for a gas turbine power plant is described as follows.

[0019] It includes: an intake mechanism 1, with a mounting plate 3 provided on the inner wall of the intake mechanism 1; an auxiliary mechanism 5, the outer wall of the auxiliary mechanism 5 is connected to the inner wall of the intake mechanism 1. The mounting plate 3 is evenly provided with filter elements 4, the axis of the filter element 4 corresponds to the axis of the auxiliary mechanism 5, the outer wall of the intake mechanism 1 near the dust collection mechanism 6 is evenly provided with baffles 2, and a dust collection mechanism 6 is installed on the side of the inner wall of the intake mechanism 1 away from the auxiliary mechanism 5. The dust collection mechanism 6 is used to concentrate dust at the bottom of the intake mechanism 1.

[0020] During operation, the intake mechanism 1 is turned on, so that external air enters through the gaps of the baffles 2, and after being filtered by the filter elements 4, it enters the device. At this time, the dust collection mechanism 6 is located at the bottom of the entrance of the intake chamber 101. When cleaning is required, the auxiliary mechanism 5 drives the air to blow back, so that the dust on the filter elements 4 is cleaned into the dust collection mechanism 6 and finally concentrated at the bottom of the intake mechanism 1 for unified cleaning.

[0021] The intake mechanism 1 includes: an intake chamber 101, the outer wall of the intake chamber 101 is connected to the outer wall of the baffle 2, a dust removal port 102 is provided at the side of the bottom of the intake chamber 101, and sliding grooves 103 are symmetrically provided on the inner wall of the intake chamber 101; a scraper 104, both ends of the scraper 104 are slidably connected to the inner wall of the intake chamber 101, an inclined rod 105 is fixedly connected to the outer wall of the scraper 104, and the outer wall of the inclined rod 105 is slidably connected to the inner wall of the intake chamber 101; a movable rod 106, the bottom of the movable rod 106 is rotatably connected to one end of the inclined rod 105 away from the scraper 104.

[0022] External air enters from the inlet of the intake chamber 101, passes through the filter element 4 on the mounting plate 3 and then enters the interior of the device. When cleaning is required, the auxiliary mechanism 5 inside the device performs a reverse purge on the filter screen, causing the air to be blown into the filter element 4 in a pulsed reverse manner. The auxiliary mechanism 5 cooperates with the dust collection mechanism 6 to gradually make the dust on the surface of the filter element 4 fall to the bottom of the intake chamber 101, causing the dust to accumulate on the slope at the bottom of the intake chamber 101. After all the cleaning is completed, the operator rotates the movable rod 106, causing the movable rod 106 to push the inclined rod 105 into the interior of the intake chamber 101, thereby driving the scraper 104 to slide along the sliding groove 103, scraping the dust at the bottom of the intake chamber 101 out from the dust removal port 102, completing the cleaning of the dust inside the intake chamber 101, and preventing the dust from always accumulating inside the intake chamber 101, resulting in ineffective filtration of subsequent air.

[0023] The dust collection mechanism 6 includes: slide rails 601, the slide rails 601 are symmetrically arranged on the inner wall of the intake chamber 101 close to the baffle 2, and a slider 602 is slidably connected to the outer wall of the slide rails 601; a shielding assembly 603, the outer wall of the shielding assembly 603 is rotatably connected to the opposite side of the slider 602, and the shielding assembly 603 is used to separately process and collect the dust blown out by each row of filter elements 4; the dust collection mechanism 6 further includes: a dust collection bag 604, the top of the dust collection bag 604 is installed at the bottom of the shielding assembly 603, the dust collection bag 604 is made of a breathable and dust-impermeable fabric material and has a draping property, and the dust collection bag 604 is used to let the blown-out dust fall from the inside and finally concentrate at the bottom of the intake chamber 101; a guiding assembly 605, the guiding assembly 605 is installed at the bottom of the inner wall of the intake chamber 101, and the guiding assembly 605 is used to open the bottom opening of the dust collection bag 604.

[0024] When it is necessary to handle the dust on the surface of the filter element 4, the slider 602 drives the shielding component 603 to move to the top of the slide rail 601, so that the shielding component 603 is inserted into the middle of the uppermost row of filter elements 4 and the second row of filter elements 4. Subsequently, the auxiliary mechanism 5 blows back the filter element 4, so that the dust on the surface of the filter element 4 enters the dust collection bag 604 along the shielding component 603, and finally deposits at the bottom of the air inlet chamber 101 through the dust collection bag 604. The guiding component 605 keeps the bottom of the dust collection bag 604 in an open state. During the gradual downward movement of the shielding component 603, the dust collection bag 604 can be stacked inside the guiding component 605, and the filter element 4 is cleaned row by row from top to bottom, so that the cleaned filter element 4 above is not contaminated again by the dust on the surface of the uncleaned filter element 4 below. By blocking and centrally collecting the dust of each row of filter elements 4, the scattering and circulation of dust in the air are reduced, which is convenient for the rapid concentration of dust and keeps the environment in the air inlet chamber 101 clean and tidy.

[0025] Embodiment 2, please refer to Figures 1 - 10 , the present invention provides a technical solution: on the basis of Embodiment 1, the auxiliary mechanism 5 includes: an air inlet pipe 501, which is separately provided so that each row of filter elements 4 can be cleaned separately, and both ends of the air inlet pipe 501 are connected to the inner wall of the air inlet mechanism 1; a mounting block 502, the inner wall of the mounting block 502 is connected to the outer wall of the air inlet pipe 501, and guide rods 506 are symmetrically arranged on the outer wall of the mounting block 502; an elastic ring 507, which is hollow, the elastic ring 507 is sleeved on the outer wall of the guide rod 506, and the elastic ring 507 is used to knock on the filter element 4; the auxiliary mechanism 5 further includes: a connecting shaft 504, both ends of the connecting shaft 504 are rotatably connected to the inner wall of the mounting block 502, a connecting rope 505 is connected to the outer surface of the connecting shaft 504, the connecting rope 505 has no elasticity, and one end of the connecting rope 505 away from the connecting shaft 504 is installed on the outer wall of the elastic ring 507; a semi-circular plate 509, a motor 508 is installed on the outer wall of the elastic ring 507, the motor 508 is connected to the semi-circular plate 509 in a one-to-one correspondence, the semi-circular plate 509 is installed on the outer wall of the motor 508, and an air outlet 503, the axis of the air outlet 503 coincides with the axis of the filter element 4, and the air outlet 503 is arranged on one side of the mounting block 502 close to the semi-circular plate 509.

[0026] When it is necessary to back-purge the filter element 4, air is introduced into the air inlet pipe 501 and pulsed air is blown to the filter element 4 through the air outlet 503. Since the pressure of the gas remains unchanged, the dust on the surface of the filter element 4 that is difficult to clean cannot be blown away. At this time, the motor 508 drives the semicircular plate 509 to rotate, so that the two semicircular plates 509 block the elastic ring 507. The gas blown out of the air outlet 503 is blocked by the semicircular plate 509. Driven by the gas, the elastic ring 507 moves toward the filter element 4 along the guide rod 506 and knocks the inside of the filter element 4. Since the shape of the filter element 4 is a conical cylinder, the elastic ring 507 is stuck in the middle of the filter element 4 when it moves to the filter element 4. During the movement of the elastic ring 507, the connecting rope 505 spreads out. When the elastic ring 507 is stuck in the middle of the filter element 4, the connecting shaft 504 drives the connecting rope 505 to rotate. 5 is rotated and retracted to pull the elastic ring 507 back to its original position for repeated use. The motor 508 drives the semicircular plate 509 to open, so that the air outlet 503 blows air to the inside of the filter element 4 again. Since the motor 508 needs to drive the semicircular plates 509 to approach each other, they will be blocked by the guide rod 506 and the air outlet 503. Therefore, the shape design of the semicircular plate 509 can adapt to the fact that when the semicircular plates 509 are combined, they are not blocked by the air outlet 503 and the guide rod 506, and can fit each other. The outer diameter of the semicircular plate 509 is smaller than the outer diameter of the elastic ring 507. When it is unfolded, it blocks the middle space of the elastic ring 507, so that the elastic ring 507 and the semicircular plate 509 are impacted by the gas and move along the guide rod 506, thereby making up for the defect that the gas pressure cannot be changed according to the accumulation of dust, and facilitating the thorough cleaning of the surface of the filter element 4.

[0027] The shielding assembly 603 includes: a rotating plate 6031, which is symmetrically mounted on the outer wall of the slider 602, the rotating plate 6031 is rotatably connected to the outer wall of the slider 602, the opposite side of the rotating plate 6031 is rotatably connected with a rotating rod 6032, and the outer wall of the rotating plate 6031 close to the rotating rod 6032 is fixedly connected to a limiting rod 6035; an elastic plate 6033, the elastic plate 6033 is mounted on the outer wall of the rotating rod 6032, the elastic plate 6033 has good elasticity and is thinner, and the elastic plate 6033 is used to block each row of filter elements 4; an extended plate 6034, the extended plate 6034 is mounted on the side of the rotating rod 6032 away from the elastic plate 6033, and the extended plate 6034 can adjust the center of gravity of the elastic plate 6033 so that the elastic plate 6033 is tilted in the direction inclined to the filter element 4.

[0028] When it is necessary to clean the filter element 4, the slider 602 drives the rotating plate 6031 to move to the uppermost position. Initially, the extension plate 6034 is in contact with the limiting rod 6035, causing the elastic plate 6033 to be vertically inclined and in a position where it contacts the upper filter element 4. During the upward movement of the slider 602, the elastic plate 6033 is deformed by the obstruction of the filter element 4. Due to its large elasticity and good resilience, when the slider 602 moves to a suitable position, the elastic plate 6033 can rely on its elasticity to insert into the middle of the two rows of filter elements 4 and separate the two rows of filter elements 4. When cleaning each row of filter elements 4 from top to bottom, the limiting rod 6035 can prevent the extension plate 6034 from rotating too much, resulting in the elastic plate 6033 being unable to insert into the middle of the filter element 4. Thus, the dust on the surface of the filter element 4 can be concentrated on the lower elastic plate 6033 and finally enter the dust collection bag 604. When cleaning each row of filter elements 4, both the upper and lower parts are blocked, preventing the filter element 4 that has been cleaned above from being contaminated again by the dust on the surface of the lower filter element 4. At the same time, the dust can be quickly concentrated and dropped for collection, improving the cleaning efficiency.

[0029] The guiding component 605 includes: a mounting rod 6051, the outer wall of the mounting rod 6051 is fixedly connected to the inner wall of the air inlet chamber 101; a bent rod 6052, the bent rod 6052 is arranged at the bottom of the mounting rod 6051, and the bent rod 6052 is used to support the bottom of the dust collection bag 604, so that the dust collection bag 604 accumulates on the bent rod 6052; the guiding component 605 further includes: a driving seat 6053, the driving seat 6053 is installed at one end of the bent rod 6052 away from the mounting rod 6051, and a rotating shaft 6054 is rotatably connected to the inner wall of the driving seat 6053; a throwing strip 6055, the throwing strips 6055 are evenly arranged on the outer wall of the rotating shaft 6054, and the throwing strips 6055 are used to open the bottom of the dust collection bag 604, so that the dust collection bag 604 can be kept in an expanded state and accumulate on the bent rod 6052.

[0030] There are two types of bent rods 6052 according to the shape of the dust collection bag 604. One type is connected to the mounting rod 6051, and the other type of bent rod 6052 is directly installed on the inner wall of the air inlet chamber 101. When the dust collection bag 604 is stretched, its bottom is on the bent rod 6052. During the downward cleaning process, the dust collection bag 604 gradually accumulates downward. At this time, the drive inside the drive seat 6053 drives the rotating shaft 6054 to rotate, so that the throwing strips 6055 are thrown onto the inner wall of the dust collection bag 604. The material of the throwing strips 6055 is a flexible material with a certain weight. The rotating directions of the left and right groups of rotating shafts 6054 are opposite, so that the dust collection bag 604 can always maintain the state where the bottom opening is expanded during the downward accumulation process, preventing the bottom of the dust collection bag 604 from closing and fitting together during collection, resulting in the dust being unable to quickly concentrate at the bottom of the air inlet chamber 101.

[0031] The specific working process is as follows: During operation, the air intake mechanism 1 is opened to allow external air to enter from the gap of the baffle plate 2, and enter the air intake chamber 101 after being filtered by the filter element 4. At this time, the dust collecting mechanism 6 is located at the bottom of the entrance of the air intake chamber 101. When cleaning is required, the slider 602 drives the rotating plate 6031 to move to the top. Initially, the extension plate 6034 contacts the limit rod 6035, so that the elastic plate 6033 is vertically inclined and is in contact with the upper filter element 4. During the upward movement of the slider 602, the elastic plate 6033 is blocked and deformed by the filter element 4. Due to its large elasticity but good resilience, when the slider 602 moves to the appropriate position, the elastic plate 6033 can rely on the elastic force to move. The elastic plate 6033 can be inserted into the middle of the two rows of filter elements 4 to separate the two rows of filter elements 4. When cleaning each row of filter elements 4 from top to bottom, the limit rod 6035 can prevent the extension plate 6034 from rotating too much, which will cause the elastic plate 6033 to be unable to be inserted into the middle of the filter element 4, so that the dust on the surface of the filter element 4 can be concentrated on the elastic plate 6033 below and finally enter the dust bag 604. Then, the uppermost air inlet pipe 501 introduces air and blows the filter element 4 in a pulsed manner through the air outlet 503. Since the pressure of the gas remains unchanged, the dust on the surface of the filter element 4 that is difficult to clean cannot be blown away. At this time, the motor 508 drives the semicircular plate 509 to rotate, so that the two semicircular plates 5 09 blocks the elastic ring 507, and the gas blown out of the air outlet 503 is blocked by the semicircular plate 509. Driven by the gas, the elastic ring 507 moves toward the filter element 4 along the guide rod 506 and knocks the inside of the filter element 4. Since the shape of the filter element 4 is a conical cylinder, the elastic ring 507 is stuck when it moves to the middle of the filter element 4. During the movement of the elastic ring 507, the connecting rope 505 spreads out. When the elastic ring 507 is stuck in the middle of the filter element 4, the connecting shaft 504 drives the connecting rope 505 to rotate and retract, and pulls the elastic ring 507 back to its original position for repeated use. In the process of downward cleaning, the dust bag 604 gradually accumulates downward. At this time, the driving seat The internal drive of 6053 drives the rotating shaft 6054 to rotate, so that the swing bar 6055 is swung to the inner wall of the dust bag 604. The material of the swing bar 6055 is a flexible material with a certain weight. The left and right sets of rotating shafts 6054 rotate in opposite directions, so that the dust bag 604 can always keep the bottom opening in the state of being stretched open during the downward accumulation process. When all the cleaning is completed, the staff will rotate the movable rod 106 so that the movable rod 106 pushes the inclined rod 105 to insert into the air inlet chamber 101, thereby driving the scraper 104 to slide along the slide groove 103, and scrape the dust at the bottom of the air inlet chamber 101 out from the dust removal port 102, thereby completing the cleaning of the dust inside the air inlet chamber 101.

[0032] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented by conventional means in the art without special instructions and limitations.

Claims

1. An air intake back-purge device for a gas turbine power plant, characterized in that: include: An air intake mechanism (1), wherein an inner wall of the air intake mechanism (1) is provided with a mounting plate (3); An auxiliary mechanism (5), wherein an outer wall of the auxiliary mechanism (5) is connected to an inner wall of the air intake mechanism (1); The auxiliary mechanism (5) comprises: An air intake pipe (501), wherein both ends of the air intake pipe (501) are connected to the inner wall of the air intake mechanism (1); A mounting block (502), the inner wall of the mounting block (502) being connected to the outer wall of the air intake pipe (501), and the outer wall of the mounting block (502) being symmetrically provided with guide rods (506); An elastic ring (507), wherein the elastic ring (507) is sleeved on the outer wall of the guide rod (506), and the elastic ring (507) is used to knock the filter element (4).

2. The air intake reverse purge equipment of a gas turbine power plant according to claim 1, characterized in that: Filter elements (4) are evenly arranged on the mounting plate (3), the axis of the filter elements (4) corresponds to the axis of the auxiliary mechanism (5), baffles (2) are evenly arranged on the outer wall of the air intake mechanism (1) on a side close to the dust collecting mechanism (6), and a dust collecting mechanism (6) is installed on the inner wall of the air intake mechanism (1) on a side away from the auxiliary mechanism (5), and the dust collecting mechanism (6) is used to collect dust at the bottom of the air intake mechanism (1).

3. The air intake reverse purge equipment of a gas turbine power plant according to claim 1, characterized in that: The air intake mechanism (1) comprises: An air inlet chamber (101), the outer wall of the air inlet chamber (101) being connected to the outer wall of the baffle (2), a dust removal port (102) being provided on the side of the bottom of the air inlet chamber (101), and a sliding groove (103) being symmetrically provided on the inner wall of the air inlet chamber (101); A scraper (104), wherein both ends of the scraper (104) are slidably connected to the inner wall of the air inlet chamber (101), an outer wall of the scraper (104) is fixedly connected to an inclined rod (105), and an outer wall of the inclined rod (105) is slidably connected to the inner wall of the air inlet chamber (101); A movable rod (106), wherein the bottom of the movable rod (106) is rotatably connected to an end of the inclined rod (105) away from the scraper (104).

4. The air intake reverse purge equipment of a gas turbine power plant according to claim 1, characterized in that: The auxiliary mechanism (5) further comprises: A connecting shaft (504), wherein both ends of the connecting shaft (504) are rotatably connected to the inner wall of the mounting block (502), a connecting rope (505) is connected to the outer surface of the connecting shaft (504), and one end of the connecting rope (505) away from the connecting shaft (504) is mounted on the outer wall of the elastic ring (507); A semicircular plate (509), a motor (508) is mounted on the outer wall of the elastic ring (507), and the semicircular plate (509) is mounted on the outer wall of the motor (508); An air outlet (503), wherein the air outlet (503) is arranged on a side of the mounting block (502) close to the semicircular plate (509).

5. The air intake reverse purge equipment of a gas turbine power plant according to claim 1, characterized in that: The dust collecting mechanism (6) comprises: A slide rail (601), the slide rail (601) being symmetrically arranged on the inner wall of the air inlet chamber (101) on a side close to the baffle (2), and a sliding block (602) being slidably connected to the outer wall of the slide rail (601); A shielding component (603), the outer wall of which is rotatably connected to the opposite side of the slider (602), and the shielding component (603) is used to separately process and collect dust blown back from each row of filter elements (4).

6. The air intake reverse purge equipment of a gas turbine power plant according to claim 5, characterized in that: The dust collecting mechanism (6) further comprises: A dust collecting bag (604), the top of which is mounted on the bottom of the shielding assembly (603), and the dust collecting bag (604) is used to allow the dust blown back to fall from the inside and finally be collected at the bottom of the air inlet chamber (101); A guide assembly (605), the guide assembly (605) being mounted on the bottom of the inner wall of the air inlet chamber (101), the guide assembly (605) being used to prop open the bottom opening of the dust collecting bag (604).

7. The air intake reverse purge equipment of a gas turbine power plant according to claim 5, characterized in that: The shielding component (603) comprises: A rotating plate (6031), the rotating plate (6031) being symmetrically mounted on the outer wall of the slider (602), the rotating plate (6031) being rotatably connected to the outer wall of the slider (602), the opposite side of the rotating plate (6031) being rotatably connected to a rotating rod (6032), and the outer wall of the rotating plate (6031) being close to the rotating rod (6032) being fixedly connected to a limiting rod (6035); An elastic plate (6033), the elastic plate (6033) being mounted on the outer wall of the rotating rod (6032), the elastic plate (6033) being used to isolate the filter elements (4) in each row; An extension plate (6034), wherein the extension plate (6034) is mounted on a side of the rotating rod (6032) away from the elastic plate (6033).

8. The air intake reverse purge equipment of a gas turbine power plant according to claim 1, characterized in that: The guide assembly (605) comprises: A mounting rod (6051), the outer wall of the mounting rod (6051) being fixedly connected to the inner wall of the air inlet chamber (101); A curved rod (6052) is arranged at the bottom of the mounting rod (6051), and the curved rod (6052) is used to receive the bottom of the dust bag (604) so ​​that the dust bag (604) is accumulated on the curved rod (6052).

9. The air intake reverse purge equipment of a gas turbine power plant according to claim 1, characterized in that: The guide assembly (605) further includes: A driving seat (6053), the driving seat (6053) being mounted on an end of the bent rod (6052) away from the mounting rod (6051), the inner wall of the driving seat (6053) being rotatably connected to a rotating shaft (6054); The swing bars (6055) are evenly arranged on the outer wall of the rotating shaft (6054), and the swing bars (6055) are used to open the bottom of the dust bag (604) so ​​that the dust bag (604) can remain in an open state and accumulate on the bent rod (6052).

Images