Impurity removal device for steam turbine to reduce fine dust

Abstract

An impurity removal device for a steam turbine for reducing fine dust is disclosed. According to one embodiment of the present disclosure, an impurity removal device for a steam turbine for fine dust reduction, for removing said impurities from steam accompanied by said impurities flowing toward a steam turbine, comprises: a blade section including a plurality of blades disposed on an inflow path of said steam accompanied by said impurities and configured to rotate about an axis parallel to the direction in which said steam flows by the flow of said steam; a storage section disposed on the lower side in the height direction of said blade section and configured to collect said impurities separated from said steam by said blade section; and a flow path section formed to penetrate said impurity removal device for a steam turbine for fine dust reduction in a longitudinal direction parallel to the direction inflow of said steam, wherein said impurities include fine dust and / or coal particles, and said flow path section includes an inflow path providing a path for said steam and said impurities to move into the interior of said impurity removal device for a steam turbine for fine dust reduction; and an intermediate path providing a path for said steam passing through said blade section to move toward said steam turbine. The present invention provides an impurity removal device for a steam turbine for reducing fine dust, comprising an outlet channel extending from the intermediate channel and providing a path for the steam to flow into the steam turbine, wherein the diameter of the inlet channel is larger than the diameter of the intermediate channel and the diameter of the outlet channel.

Description

Technology Field

[0001] The present disclosure relates to an impurity removal device for a steam turbine for reducing fine dust, and more specifically, to a device capable of effectively removing impurities by separating impurities contained in steam in an outer direction, guiding them downward, and collecting them in a storage unit, thereby preventing damage to turbine components and a decrease in efficiency, and reducing environmental pollution. Background Technology

[0002] Currently, technologies for removing impurities to maintain the quality of steam supplied to turbines in coal-fired power plants are limited. In general, steam impurities act as a major factor that can degrade power plant efficiency and turbine lifespan. Therefore, technologies for effectively removing these impurities are considered a critical element in power plant operations. However, currently used technologies rely primarily on methods to remove soot from inside the boiler.

[0003] Conventional methods for removing soot from the inside of boilers have limitations in completely eliminating it. Specifically, there is a problem in that the interior of the boiler is difficult to access due to the high temperature and high pressure environment, and since soot accumulates in complex structures, it is very challenging to completely remove it using physical or chemical methods. These limitations reduce the efficiency of steam impurity removal, which can negatively affect the performance and stability of the turbine.

[0004] Furthermore, conventional soot removal methods have insufficient removal efficiency for impurities contained in steam, which causes damage to turbine components and reduces turbine efficiency. There is a problem in that the decrease in turbine efficiency leads to increased fuel consumption, which can accelerate environmental pollution. The problem to be solved

[0005] The object of the present disclosure is to provide an impurity removal device for a steam turbine for reducing fine dust, which effectively removes impurities contained in steam to reduce damage to turbine components and reduce environmental pollution.

[0006] The problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned problems will be clearly understood by a person skilled in the art from the description below. means of solving the problem

[0007] According to one embodiment of the present disclosure, an impurity removal device for a steam turbine for fine dust reduction, for removing said impurities from steam accompanied by said impurities flowing toward a steam turbine, comprises: a blade section including a plurality of blades disposed on an inflow path of said steam accompanied by said impurities and configured to rotate about an axis parallel to the direction in which said steam flows by the flow of said steam; a storage section disposed on the lower side in the height direction of said blade section and configured to collect said impurities separated from said steam by said blade section; and a flow path section formed to penetrate said impurity removal device for a steam turbine for fine dust reduction in a longitudinal direction parallel to the direction inflow of said steam, wherein said impurities include fine dust and / or coal particles, and said flow path section includes an inflow path providing a path for said steam and said impurities to move into the interior of said impurity removal device for a steam turbine for fine dust reduction; and an intermediate path providing a path for said steam passing through said blade section to move toward said steam turbine. The present invention provides an impurity removal device for a steam turbine for reducing fine dust, comprising an outlet channel extending from the intermediate channel and providing a path for the steam to flow into the steam turbine, wherein the diameter of the inlet channel is larger than the diameter of the intermediate channel and the diameter of the outlet channel.

[0008] According to one embodiment of the present disclosure, in a control method for an impurity removal device for a steam turbine for fine dust reduction, which removes impurities from steam accompanied by impurities flowing toward a steam turbine, the sensor unit detects collection information regarding the amount of impurities collected within the internal space of a storage unit; the sensor unit transmits the collection information to a control unit. The present invention provides a control method for an impurity removal device for a steam turbine for fine dust reduction, comprising a control process in which the control unit controls the display unit of the storage unit to display a flashing warning indicator when the total weight of impurities collected in the internal space is 50% or more and less than 75% of the allowable total weight, and to display a continuous lighting warning indicator when the total weight is 75% or more of the allowable total weight, and to display a flashing warning indicator when the height of the impurities accumulated in the internal space is 50% or more and less than 75% of the total height of the internal space, and to display a continuous lighting warning indicator when the height of the impurities accumulated in the internal space is 75% or more of the total height of the internal space, wherein the collection information includes weight information regarding the weight of the impurities collected in the internal space and height information regarding the height at which the impurities collected in the internal space are accumulated.

[0009] According to one embodiment of the present disclosure, a thermal power plant system comprising an impurity removal device for a steam turbine for fine dust reduction, which removes impurities from steam accompanied by impurities flowing toward a steam turbine, wherein the impurity removal device for a steam turbine for fine dust reduction comprises: a blade section comprising a plurality of blades arranged on an inflow path of the steam accompanied by impurities and configured to rotate about an axis parallel to the direction in which the steam flows by the flow of the steam; a storage section arranged below the blade section in the height direction and configured to collect the impurities separated from the steam by the blade section; and a flow path section formed to penetrate the impurity removal device for a steam turbine for fine dust reduction in a longitudinal direction parallel to the direction inflow of the steam, wherein the flow path section comprises: an inflow path providing a path for the steam and the impurities to move into the interior of the impurity removal device for a steam turbine for fine dust reduction; and an intermediate path providing a path for the steam that has passed through the blade section to move toward the steam turbine. The present invention provides a thermal power plant system comprising an outlet channel extending from the intermediate channel and providing a path for the steam to flow into the steam turbine, wherein the diameter of the inlet channel is larger than the diameter of the intermediate channel and the diameter of the outlet channel. Effects of the invention

[0010] According to one embodiment of the present disclosure, by separating impurities from steam passing through the blade section in an outer direction and guiding them downwards, and by collecting the guiding impurities in a storage section, impurities in the steam flowing into the steam turbine can be effectively removed, thereby reducing damage to turbine components. Furthermore, by preventing a decrease in turbine efficiency and damage to boiler tubes, the emission of pollutants caused by increased fuel consumption and unplanned shutdowns can be suppressed, thereby reducing pollution of the environment surrounding the power generation facility and enabling environmentally friendly operation. Brief explanation of the drawing

[0011] FIG. 1 is a schematic diagram showing a thermal power plant system according to one embodiment of the present disclosure. FIG. 2 is a cross-sectional view showing the internal structure of an impurity removal device for a steam turbine for reducing fine dust according to one embodiment of the present disclosure. FIG. 3 is a perspective view showing a storage section of an impurity removal device for a steam turbine for reducing fine dust according to one embodiment of the present disclosure. FIG. 4 is a flowchart illustrating a control method for an impurity removal device for a steam turbine for reducing fine dust according to one embodiment of the present disclosure. Specific details for implementing the invention

[0012] Some embodiments of the present disclosure are described in detail below with reference to the exemplary drawings. It should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the present disclosure, if it is determined that a detailed description of related known components or functions could obscure the essence of the present disclosure, such detailed description is omitted.

[0013] In describing the components of the embodiments according to the present disclosure, symbols such as first, second, i), ii), a), b), etc., may be used. These symbols are intended only to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by the symbols. When a part in the specification is described as 'comprising' or 'having' a component, this means that, unless explicitly stated otherwise, it does not exclude other components but may include additional components.

[0014] Where it is stated that one component is 'connected', 'combined', or 'joined' to another component, it should be understood that while the component may be directly connected or joined to the other component, another component may also be 'connected', 'combined', or 'joined' between each component.

[0015] Terms such as 'part', 'module', etc., as described in the specification refer to a unit that processes at least one function or operation, and this may be implemented in hardware, software, or a combination of hardware and software.

[0016] Unless otherwise stated, it should be noted that the description of any one embodiment may also apply to other embodiments.

[0017] The description of the invention disclosed below, together with the accompanying drawings, is intended to describe exemplary embodiments of the invention and is not intended to represent the only embodiment in which the invention may be practiced.

[0018] As used in this disclosure, the term "steam turbine" may refer to a device that converts steam energy into mechanical energy to generate electricity or drive machinery. Steam turbines may be used primarily in power plants or industrial facilities. Steam turbines can operate efficiently by removing impurities from steam accompanied by impurities. Steam turbines may be used in conjunction with an impurity removal device for reducing fine dust.

[0019] As used in this disclosure, the term "fine dust reduction" may refer to a process of reducing fine particles in air or steam. Fine dust reduction can contribute to environmental protection and the enhancement of equipment efficiency. Fine dust reduction can be achieved through an impurity removal device for a steam turbine for fine dust reduction according to this disclosure. Fine dust reduction can play an important role in maintaining the performance of a steam turbine and preventing damage.

[0020] As used in this disclosure, the term 'impurity' may refer to unwanted foreign substances in air, water, steam, etc. Impurities may degrade the performance of equipment or cause damage. Impurities may include fine dust and coal particles and may be removed through an impurity removal device for a steam turbine for fine dust reduction according to this disclosure. Impurities may be collected and managed in a storage unit (120).

[0021] As used in this disclosure, the term "thermal power plant system" may refer to a system that produces electricity by burning fossil fuels. A thermal power plant system may be used as a major component of a power plant. A thermal power plant system may include an impurity removal device for a steam turbine to reduce fine dust. A thermal power plant system according to this disclosure may contribute to maintaining the efficiency and stability of a steam turbine.

[0022] FIG. 1 is a schematic diagram showing a thermal power plant system according to one embodiment of the present disclosure.

[0023] Referring to FIG. 1, the thermal power plant system may include a coal hopper (11), a coal feeder (12), a coal chute (13), a coal crusher (14), a rotary classifier (15), a boiler (16), a steam turbine (17), an air preheater (18), a blower (19), a chimney (20), and a generator (21).

[0024] The coal hopper (11) can serve the role of temporarily storing coal. The coal hopper (11) can be located in the initial stage of the thermal power plant system to provide a foundation for stably supplying fuel. An opening may be formed at the bottom of the coal hopper (11) to discharge coal to a coal feeder (12).

[0025] The coal feeder (12) may be a device that transports coal from a coal hopper (11) at a constant speed. The coal feeder (12) may use a conveyor belt system to transport coal to a coal chute (13). The supply speed of the coal feeder (12) may be adjusted according to the load requirements of the power plant.

[0026] The coal chute (13) may be a passage that guides coal delivered from the coal feeder (12) to the coal crusher (14). The coal chute (13) may have an inclined structure to allow the coal to move smoothly by gravity. The coal chute (13) may have the function of preventing coal from scattering and clearly establishing a transport path.

[0027] The coal crusher (14) can crush lump coal supplied through the coal chute (13) into fine powder. The crushed coal can increase combustion efficiency and help complete combustion in the boiler (16). The coal crusher (14) can crush the coal while drying it by receiving preheated air from the blower (19).

[0028] The rotary classifier (15) may be a device for sorting the size of coal particles crushed in the coal crusher (14). The rotary classifier (15) may return particles larger than the specified size back to the coal crusher (14) for re-crushing. Only fine coal powder that meets the specifications may be supplied to the boiler (16).

[0029] The boiler (16) may be a device that generates high-temperature, high-pressure steam by burning fine coal powder supplied from a rotary classifier (15). The thermal energy generated during the combustion process inside the boiler (16) may be used to heat water and convert it into steam. The steam generated in the boiler (16) may be accompanied by impurities including fine dust and unburned coal particles.

[0030] A steam turbine (17) may be a device that converts the thermal energy of high-temperature, high-pressure steam generated in a boiler (16) into mechanical rotational energy. The steam turbine (17) may include a plurality of turbine blades. As steam passes through the turbine blades, it expands and can rotate the turbine shaft.

[0031] In the thermal power plant system of the present disclosure, a steam turbine (17) may be placed in a path that receives steam from a boiler (16). Impurities, such as fine dust or coal particles contained in the steam, may wear down or damage the blades of the steam turbine (17). Such damage may cause a decrease in the efficiency of the steam turbine (17) and a shortening of its lifespan.

[0032] In one embodiment of the present disclosure, an impurity removal device (10) for a steam turbine for reducing fine dust may be disposed in the steam path leading to the steam turbine (17), that is, between the boiler (16) and the steam turbine (17). The impurity removal device (10) can perform the function of protecting the steam turbine (17) by separating impurities from the steam. Thus, only purified steam is supplied to the steam turbine (17), thereby improving the stability and efficiency of the power generation system.

[0033] The generator (21) may be a device connected to the rotating shaft of the steam turbine (17) to convert mechanical energy into electrical energy. The generator (21) can produce electricity using the rotational force of the steam turbine (17). The electricity produced by the generator (21) can be supplied to where it is needed through a transmission system.

[0034] The air preheater (18) may be a heat exchanger that recovers heat from the high-temperature exhaust gas discharged from the boiler (16). The air preheater (18) can use the recovered heat to preheat the combustion air supplied from the blower (19). By using the preheated air for combustion, the overall thermal efficiency of the power plant can be increased.

[0035] The blower (19) may be a device that draws in outside air and supplies combustion air required for the boiler (16). The air supplied by the blower (19) may be heated as it passes through the air preheater (18). The blower (19) may adjust the amount of air supplied according to the combustion state of the boiler (16).

[0036] The chimney (20) may be a passage for discharging exhaust gas, whose temperature has been lowered through the air preheater (18), into the atmosphere. The chimney (20) may have sufficient height to minimize the impact of the exhaust gas on the surrounding area. Before the exhaust gas is discharged through the chimney (20), it may pass through a separate environmental pollution prevention facility to remove harmful substances.

[0037] FIG. 2 is a cross-sectional view showing the internal structure of an impurity removal device (10) for a steam turbine for reducing fine dust according to one embodiment of the present disclosure.

[0038] FIG. 3 is a perspective view showing a storage section of an impurity removal device (10) for a steam turbine for reducing fine dust according to one embodiment of the present disclosure.

[0039] Referring to FIGS. 1 to 3, the impurity removal device (10) for a steam turbine for fine dust reduction can perform the role of removing impurities from steam flowing into the steam turbine (17). The impurity removal device (10) for a steam turbine for fine dust reduction can be placed between the boiler (16) and the steam turbine (17).

[0040] In the present disclosure, impurities may include fine dust and / or coal particles. For example, impurities may be fine dust, coal particles, scale particles, iron oxide, silica, copper oxide, or other solid particles, but the present disclosure is not necessarily limited thereto.

[0041] Referring to FIGS. 2 and 3, an impurity removal device (10) for a steam turbine for reducing fine dust according to one embodiment of the present disclosure may include a blade section (110), a storage section (120), and a flow path section (100). The impurity removal device (10) for a steam turbine for reducing fine dust may include a flow path section (100) formed to penetrate in a longitudinal direction parallel to the direction of steam inflow.

[0042] The flow path (100) may include an inlet flow path (101), an intermediate flow path (102), and an outlet flow path (103). The inlet flow path (101) may provide a flow path for steam and impurities to move into the interior of the impurity removal device (10) for a steam turbine for fine dust reduction. The intermediate flow path (102) may provide a path for steam passing through the blade section (110) to move toward the steam turbine (17). The outlet flow path (103) may be formed as an extension from the intermediate flow path (102). The outlet flow path (103) may provide a path for steam to flow into the steam turbine (17).

[0043] The diameter of the inlet channel (101) may be larger than the diameter of the intermediate channel (102) and the outlet channel (103). A larger diameter of the inlet channel (101) may reduce the inflow velocity of the steam. This may increase the interaction time with the blade section (110). This may improve the efficiency of impurity separation. The intermediate channel (102) and the outlet channel (103) may have relatively narrow diameters. This allows the purified steam to be accelerated and efficiently delivered to the steam turbine (17).

[0044] The blade section (110) may be positioned on the path of steam introduced through the inflow channel (101). The blade section (110) may include a plurality of blades (111). The blade section (110) may be configured to rotate around an axis parallel to the direction in which the steam is introduced by the flow of steam. The rotation of the blade section (110) can apply centrifugal force to impurities contained in the steam, thereby separating the impurities from the steam by separating them in an outer direction.

[0045] Each of the plurality of blades (111) may be configured to rotate around an axis parallel to the direction in which steam is introduced by the flow of steam. Each of the plurality of blades (111) may include a leading edge (211) and a trailing edge (212). The leading edge (211) may be positioned on the side of the inlet channel (101) into which steam accompanied by impurities is introduced. The trailing edge (212) may extend spirally from the leading edge (211) toward the longitudinal direction. The trailing edge (212) may gradually become thinner along the direction of extension. This spiral structure and thinned shape can smoothly induce the flow of steam. In addition, it can effectively generate rotational force to maximize the efficiency of impurity separation.

[0046] A storage unit (120) may be positioned below the blade unit (110) in the height direction. The storage unit (120) may be configured to collect impurities separated from the steam by the blade unit (110). The storage unit (120) may include an upper unit (121), a collection unit (122), a display unit (123), an opening (124), and a lower cap (125).

[0047] The upper portion (121) may be positioned on the lower side in the height direction of the blade portion (110). The upper portion (121) may include a porous member (221). The porous member (221) may be configured to allow impurities falling from the upper side in the height direction to pass through. The porous member (221) may serve to prevent impurities stored in the collection portion (122) from scattering again and moving upward due to steam vortices, etc. The porous member (221) may be implemented in various materials and forms considering the type and size of the impurities, and the temperature and pressure of the operating environment. For example, the porous member (221) may be a metal mesh, a ceramic filter, a perforated plate, a sintered metal filter, a wire mesh screen, a fabric filter, or a fiber mat. However, the present disclosure is not necessarily limited thereto, and the material and pore size of the porous member (221) may be appropriately changed within a range that allows impurity particles to pass through effectively while maintaining structural stability.

[0048] The collection unit (122) may be positioned below the upper part (121) in the height direction. The collection unit (122) may form an internal space for storing impurities. Impurities that pass through the porous member (221) may accumulate in the internal space of the collection unit (122). The collection unit (122) may be designed to have a volume capable of storing a sufficient amount of impurities until the next maintenance cycle.

[0049] A display unit (123) may be placed on the outer surface of the storage unit (120). The display unit (123) may be configured to display different types of warning lights in stages according to the amount of captured impurities. This allows the user to intuitively recognize when the storage unit (120) is empty. The display unit (123) may be implemented in various forms to provide clear visual information to the operator. For example, the display unit (123) may be a light-emitting diode (LED), a liquid crystal display (LCD) screen, an organic light-emitting diode (OLED) panel, a lamp, a warning light, a digital gauge, or an analog meter.

[0050] An opening (124) may be formed at the bottom of the collection section (122). The opening (124) may be configured so that impurities can be discharged to the outside from the collection section (122) at the bottom of the collection section (122).

[0051] A lower cap (125) may be placed at the bottom of the collection unit (122). The lower cap (125) may serve to seal the opening (124). The lower cap (125) may be configured to allow the collection unit (122) to be opened and closed. During maintenance, the operator can open the lower cap (125) to easily discharge and remove impurities accumulated within the collection unit (122). That is, the user can discharge impurities through the opening (124) by separating the lower cap (125), or can dispose of impurities by separating or replacing the storage unit (120).

[0052] In one embodiment of the present disclosure, the storage unit (120) may further include a sensor unit and a control unit. The sensor unit may be configured to detect collection information regarding the amount of impurities collected within the internal space. The collection information may include weight information regarding the weight of the impurities collected within the internal space and height information regarding the height at which the impurities collected within the internal space have accumulated.

[0053] The control unit may receive collection information from the sensor unit. The control unit may be configured to determine the display form of the warning light to be displayed on the display unit (123) based on the received collection information. The control unit may control the display unit (123) to not display a warning light, to display a flashing warning light, or to display a continuously lit warning light. However, the present disclosure is not necessarily limited thereto, and the control unit may control the display unit (123) to display a warning light through other display methods. For example, the control unit may control the display unit (123) to display the level of danger in stages by displaying warning lights of various colors, such as green, yellow, and red.

[0054] A control unit of an impurity removal device (10) for a steam turbine for reducing fine dust according to one embodiment of the present disclosure may control a display unit (123) to display a flashing warning indicator when the total weight of impurities collected in the internal space is 50% or more and less than 75% of the allowable total weight. A control unit may perform a control process to control a display unit (123) to display a flashing warning indicator when the height of impurities accumulated in the internal space is 50% or more and less than 75% of the total height of the internal space. A control unit may control a display unit (123) to display a continuous light indicator when the total weight of impurities collected in the internal space is 75% or more of the allowable total weight. A control unit may control a display unit (123) to display a continuous light indicator when the height of impurities accumulated in the internal space is 75% or more of the total height of the internal space. The control unit can notify the user that immediate action is required by controlling the display unit (123) to display a warning light that is continuously illuminated.

[0055] An impurity removal device (10) for a steam turbine for reducing fine dust according to one embodiment of the present disclosure may include a chamber section (130). The chamber section (130) may be positioned in the lower height direction of an intermediate flow path (102). The chamber section (130) may form a space through which steam and impurities can move.

[0056] The chamber section (130) may include an upper chamber (131), a lower chamber (132), and a partition wall (133). The upper chamber (131) may be positioned above the height of the storage section (120). The upper chamber (131) may be positioned above the height of the lower chamber (132). The upper chamber (131) may be configured so that steam moving to the storage section (120) can flow into the flow path section (100). Steam within the upper chamber (131) may move toward the steam turbine (17) through the outflow path (103). The lower chamber (132) may form a path for impurities flowing in from the blade section (110) to move toward the storage section (120). The partition wall (133) may be positioned between the upper chamber (131) and the lower chamber (132). The partition wall (133) can be configured to prevent impurities from moving into the upper chamber (131).

[0057] In one embodiment of the present disclosure, at least a portion of the lower portion in the height direction of the upper chamber (131) may be configured such that the diameter of the upper chamber (131) decreases along the lower direction. The partition wall (133) may include an extension (231), a bend (232), and a protrusion (233). The extension (231) may be formed to extend toward the radial inner side of the chamber portion (130). The bend (232) may be bent and extended from one end of the extension (231) toward the storage portion (120). The protrusion (233) may be formed to protrude from one end of the bend (232) toward the radial inner side of the chamber portion (130).

[0058] The chamber section (130) may include a first hole (134) and a second hole (135). The first hole (134) may be formed through from the bottom of the partition wall (133) toward the upper direction in the vertical direction. The first hole (134) may provide a path for steam that has moved to the storage section (120) to flow back into the flow path section (100). The second hole (135) may be formed through from the bottom of the lower chamber (132) toward the upper direction in the vertical direction. The second hole (135) may form a path for impurities separated from the blade section (110) to move to the storage section (120). The diameter of the second hole (135) may be larger than the diameter of the first hole (134). This allows impurities, which are solid particles, to pass through smoothly. Additionally, this may be a structure to minimize backflow of gaseous steam.

[0059] FIG. 4 is a flowchart showing a control method for an impurity removal device (10) for a steam turbine for reducing fine dust according to one embodiment of the present disclosure.

[0060] Referring to FIG. 4, the sensor unit performs a sensing process (S400) to detect collection information regarding the amount of impurities collected within the internal space of the storage unit (120). The sensor unit may be provided inside the storage unit (120). The sensor unit can measure the amount of impurities accumulated within the collection unit (122) in real time. The collection information may include weight information regarding the weight of the impurities collected within the internal space. Additionally, the collection information may include height information regarding the height at which the impurities collected within the internal space are accumulated.

[0061] The sensor unit performs a transmission process to transmit the captured information to the control unit (S410). The sensor unit can transmit the detected captured information to the control unit via wired or wireless communication. The control unit can determine the state of the storage unit (120) based on the received captured information. Based on the captured information received from the sensor unit, the control unit can determine the display form of the warning light to be displayed on the display unit (123).

[0062] The control unit determines whether the total weight of impurities captured in the internal space is less than 50% of the allowable total weight (S420). The control unit can compare the weight information received from the sensor unit with a preset first weight threshold.

[0063] If the control unit determines that the total weight of impurities captured in the internal space of the storage unit (120) is less than 50% of the allowable total weight, the control unit determines whether the height of the impurities accumulated in the internal space is less than 50% of the total height of the internal space (S440). The control unit can compare the height information received from the sensor unit with a preset first height threshold.

[0064] When the control unit determines that the height of the impurities accumulated in the internal space of the storage unit (120) is less than 50% of the total height of the internal space, the control unit controls the display unit (123) not to display a warning indicator (S460). That is, when both the weight and height of the impurities are less than the first threshold value, the control unit determines that the storage unit (120) is in a normal state, and the display unit (123) may not light up the warning light or may light up the indicator light indicating the normal state. After the control unit performs the control process (S460), the algorithm terminates.

[0065] If the control unit determines that the total weight of impurities collected in the internal space of the storage unit (120) is 50% or more of the allowable total weight, the control unit determines whether the total weight of impurities collected in the internal space of the storage unit (120) is less than 75% of the allowable total weight (S430). The control unit can compare the weight information with a preset second weight threshold.

[0066] If the control unit determines that the total weight of impurities captured within the internal space of the storage unit (120) is 75% or more of the allowable total weight, the control unit may perform a control process to control the display unit (123) to display a warning indication in a continuous lighting state (S480). After the control unit performs the control process (S480), the algorithm is terminated.

[0067] If the control unit determines that the total weight of impurities collected within the internal space of the storage unit (120) is less than 75% of the allowable total weight, the control unit determines whether the height of the impurities accumulated within the internal space of the storage unit (120) is less than 75% of the total height of the internal space (S450). Additionally, in the process (S440) in which the control unit determines whether the height of the impurities accumulated within the internal space of the storage unit (120) is less than 50% of the total height of the internal space, even if the control unit determines that the height of the impurities is 50% or more of the total height of the internal space, the control unit determines whether the height of the impurities accumulated within the internal space of the storage unit (120) is less than 75% of the total height of the internal space (S450). The control unit can compare the height information with a preset second height threshold.

[0068] If the control unit determines that the height of the impurities accumulated in the internal space of the storage unit (120) is 75% or more of the total height of the internal space, the control unit may perform a control process to control the display unit (123) to display a warning indication in a continuous lighting state (S480). After the control unit performs the control process (S480), the algorithm is terminated.

[0069] If the control unit determines that the height of the impurities accumulated in the internal space of the storage unit (120) is less than 75% of the total height of the internal space, the control unit may control the display unit (123) to display a flashing warning indicator. That is, if the weight or height of the impurities is greater than or equal to a first threshold and less than a second threshold, the control unit determines that the storage unit (120) corresponds to a caution stage, and the display unit (123) may notify the user that maintenance is required through a flashing warning light. After the control unit performs the control process (S470), the algorithm terminates.

[0070] One aspect of the present disclosure provides a control method for an impurity removal device (10) for a steam turbine for fine dust reduction, which removes said impurities from steam accompanied by impurities that flows toward the steam turbine. A control method for an impurity removal device (10) for a steam turbine for reducing fine dust according to one embodiment of the present disclosure may include a sensing process in which a sensor unit detects collection information regarding the amount of impurities collected in the internal space of a storage unit (120); a transmission process in which the sensor unit transmits the collection information to a control unit; and a control process in which the control unit controls the display unit (123) of the storage unit (120) to display a flashing warning indicator when the total weight of impurities collected in the internal space is 50% or more and less than 75% of the allowable total weight, and to display a continuous lighting warning indicator when the total weight is 75% or more of the allowable total weight, and to display a flashing warning indicator when the height of impurities accumulated in the internal space is 50% or more and less than 75% of the total height of the internal space, and to display a continuous lighting warning indicator when the height of the impurities accumulated in the internal space is 75% or more and less than 75% of the total height of the internal space. The control method of the impurity removal device (10) for steam turbines for specific fine dust reduction is as described above.

[0071] According to the control method of the impurity removal device (10) for a steam turbine for reducing fine dust according to the present disclosure, impurities are separated from the steam passing through the blade section (110) in an outer direction and guided downward, and the guided impurities are collected in the storage section (120), thereby effectively removing impurities in the steam flowing into the steam turbine, which can reduce damage to the turbine components, and prevent a decrease in turbine efficiency and damage to the boiler tubes, thereby suppressing the emission of pollutants caused by increased fuel consumption and unplanned shutdowns, which can reduce pollution of the environment surrounding the power generation facility and enable eco-friendly operation.

[0072] One aspect of the present disclosure provides a thermal power plant system comprising an impurity removal device (10) for a steam turbine for fine dust reduction, which removes said impurities from steam accompanied by impurities flowing toward the steam turbine. The description of the impurity removal device (10) for a steam turbine for fine dust reduction is as described above.

[0073] According to the thermal power plant system of the present disclosure, by separating impurities from steam passing through the blade section (110) in an outer direction and guiding them downwards, and by collecting the guiding impurities in the storage section (120), impurities in the steam flowing into the steam turbine can be effectively removed, thereby reducing damage to the turbine components and preventing a decrease in turbine efficiency and damage to the boiler tubes, thereby suppressing the emission of pollutants caused by increased fuel consumption and unplanned shutdowns, which reduces pollution of the environment surrounding the power generation facility and enables eco-friendly operation.

[0074] Various embodiments of the systems and techniques described herein may be realized as digital electronic circuits, integrated circuits, field programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include being implemented as one or more computer programs executable on a programmable system. A programmable system comprises a storage system, at least one input device, and at least one programmable processor (which may be a special-purpose processor or a general-purpose processor) coupled to receive data and instructions from and transmit data and instructions to at least one output device. Computer programs (which are also known as programs, software, software applications, or code) include instructions for the programmable processor and are stored on a "computer-readable recording medium."

[0075] Computer-readable recording media include all types of recording devices in which data that can be read by a computer system is stored. Such computer-readable recording media may be non-volatile or non-transitory media such as ROM, CD-ROM, magnetic tape, floppy disk, memory card, hard disk, magneto-optical disk, and storage device, and may also include transitory media such as data transmission media. Additionally, computer-readable recording media may be distributed across networked computer systems, and computer-readable code may be stored and executed in a distributed manner.

[0076] Although the flowcharts and timing diagrams of this specification describe each process as being executed sequentially, this is merely an illustrative explanation of the technical concept of one embodiment of the present disclosure. In other words, a person skilled in the art to which one embodiment of the present disclosure belongs may modify and adapt the flowcharts and timing diagrams in various ways, such as changing the order described in the flowcharts and timing diagrams or executing one or more of the processes in parallel, without departing from the essential characteristics of one embodiment of the present disclosure; therefore, the flowcharts and timing diagrams are not limited to a chronological order.

[0077] The above description is merely an illustrative explanation of the technical concept of the present embodiment, and a person skilled in the art to which the present embodiment belongs would be able to make various modifications and variations within the scope of the essential characteristics of the present embodiment. Accordingly, the present embodiments are intended to explain, not limit, the technical concept of the present embodiment, and the scope of the technical concept of the present embodiment is not limited by these embodiments. The scope of protection of the present embodiment shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present embodiment. Explanation of the symbols

[0078] 10: Impurity removal device for steam turbines for fine dust reduction 11: Coal hopper 12: Coal feeder 13: Coal chute 14: Coal crusher 15: Rotary classifier 16: Boiler 17: Steam turbine 18: Air preheater 19: Blower 20: Chimney 21: Generator 100: Eurobu 101: Inflow Euro 102: Intermediate Euro 103: Oil leak 110: Blade section 111: Blade 120: Storage 121: Upper layer 122: Collection section 123: Display part 124: Opening 125: Lower cap 130: Chamber section 131: Upper chamber 132: Lower chamber 133: Partition Wall 134: First Hall 135: 2nd hole 211: anterior margin 212: Rear edge 221: Porous member 231: Extension part 232: Bending part 233: Protrusion

Claims

Claim 1 An impurity removal device for a steam turbine for fine dust reduction, for removing said impurities from steam accompanied by impurities flowing toward a steam turbine, comprising: a blade section including a plurality of blades disposed on the inflow path of said steam accompanied by impurities and configured to rotate about an axis parallel to the direction in which said steam flows by the flow of said steam; a storage section disposed on the lower side in the height direction of said blade section and configured to collect said impurities separated from said steam by said blade section; and a flow path section formed to penetrate said impurity removal device for a steam turbine for fine dust reduction in a longitudinal direction parallel to the direction inflow of said steam, wherein said impurities include fine dust and / or coal particles, and said flow path section includes an inflow path providing a path for said steam and said impurities to move into the interior of said impurity removal device for a steam turbine for fine dust reduction; and an intermediate path providing a path for said steam passing through said blade section to move toward said steam turbine. and includes an outlet channel extending from the intermediate channel to provide a path for the steam to flow into the steam turbine, wherein the diameter of the inlet channel is larger than the diameter of the intermediate channel and the diameter of the outlet channel, and the storage unit comprises: an upper layer comprising a porous member disposed below the height direction of the blade unit and configured to allow impurities falling from the height direction upper portion to pass through; a collection unit disposed below the height direction of the upper layer and forming an internal space for storing the impurities; a sensor unit configured to detect collection information regarding the amount of impurities collected within the internal space; and a display unit disposed on the outer surface of the storage unit and configured to display a warning light of a different display form in stages according to the collection information.An impurity removal device for a steam turbine for fine dust reduction, comprising: a control unit configured to determine the display form of a warning light to be displayed on a display unit based on the collection information received from the sensor unit; wherein the collection information includes weight information regarding the weight of the impurity collected within the internal space and height information regarding the height at which the impurity collected within the internal space is accumulated; and wherein the control unit controls the display unit to display a flashing warning indicator when the total weight of the impurity collected within the internal space is 50% or more and less than 75% of the allowable total weight, and to display a continuously lit warning indicator when the total weight is 75% or more of the allowable total weight, and wherein the display unit controls the display unit to display a flashing warning indicator when the height of the impurity accumulated within the internal space is 50% or more and less than 75% of the total height of the internal space, and to display a continuously lit warning indicator when the height is 75% or more of the total height of the internal space. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 ◈Claim 5 was abandoned upon payment of the registration fee.◈ An impurity removal device for a steam turbine for fine dust reduction, wherein the storage unit comprises: an opening configured to allow the impurities to be discharged to the outside from the collection unit at the bottom of the collection unit; and a lower cap disposed at the bottom of the collection unit and configured to allow the collection unit to be opened and closed. Claim 6 ◈Claim 6 was abandoned upon payment of the registration fee.◈ The device for removing impurities for a steam turbine for fine dust reduction according to Claim 1, further comprising a chamber portion disposed in the lower height direction of the intermediate flow path to form a space in which the steam and the impurities can move, wherein the chamber portion comprises: an upper chamber disposed in the upper height direction of the storage portion and configured such that the steam moved to the storage portion can flow into the flow path; a lower chamber forming a path in which the impurities flowing from the blade portion move toward the storage portion; and a partition wall disposed between the upper chamber and the lower chamber to prevent the impurities from moving to the upper chamber, wherein the upper chamber is configured such that at least a portion of the lower height direction of the upper chamber has a diameter of the upper chamber that decreases along the lower direction. Claim 7 ◈Claim 7 was abandoned upon payment of the registration fee.◈ An impurity removal device for a steam turbine for fine dust reduction according to Claim 6, wherein the partition wall comprises: an extension portion formed extending toward the radial inner side of the chamber portion; a bent portion bent and extended from one end of the extension portion toward the storage portion; and a protrusion formed protruding from one end of the bent portion toward the radial inner side of the chamber portion. Claim 8 ◈Claim 8 was abandoned upon payment of the registration fee.◈ In claim 6, the chamber portion comprises a first hole formed penetrating from the lower portion of the partition wall toward the upper portion in the height direction and a second hole formed penetrating from the lower portion of the lower chamber toward the upper portion in the height direction, an impurity removal device for a steam turbine for reducing fine dust. Claim 9 ◈Claim 9 was abandoned upon payment of the registration fee.◈ An impurity removal device for a steam turbine for reducing fine dust, characterized in that, in claim 8, the diameter of the second hole is larger than the diameter of the first hole. Claim 10 ◈Claim 10 was abandoned upon payment of the registration fee.◈ An impurity removal device for a steam turbine for reducing fine dust, wherein each of the plurality of blades comprises a leading edge disposed on the side of an inlet passage configured to allow the steam accompanied by the impurities to flow in, and a trailing edge extending spirally from the leading edge toward the longitudinal direction, and the trailing edge gradually thins along the direction of extension.

Images