A ship gas turbine air inlet anti-icing device and anti-icing method

Abstract

The application discloses a ship gas turbine air inlet anti-icing device and an anti-icing method. The device is clamped and fixed on the gas turbine through a clamping type positioning connecting assembly, then hot air is uniformly blown in the rotating control cylinder through a hot air generating assembly and a blowing and heating assembly, the moisture and frost in the rotating control cylinder are dried and removed, and the temperature control effect of the air inlet of the ship gas turbine is improved, so that the air inlet of the gas turbine is prevented from icing.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to an anti-icing device and method for the air inlet of a marine gas turbine. Background Technology

[0002] Marine gas turbines are an important power plant widely used on modern ships. They utilize the energy released by the combustion of fuel and air in a combustion chamber to drive a turbine rotor, thereby generating electricity or propelling the ship. To ensure the normal operation of gas turbines in cold or humid environments, anti-icing heating devices are required at the gas turbine inlet. These devices heat the inlet to prevent moisture in the air from freezing or frosting, thus ensuring that the gas turbine can continuously and stably draw in air for combustion.

[0003] As disclosed in announcement number (CN207647621U), the gas turbine inlet anti-icing system mainly includes a gas collection hood, an air duct elbow, an electrically operated isolation valve, a gas box, and cooling pipes. The gas collection hood is connected to the generator exhaust port, collecting the high-temperature air discharged from the generator. This air is then heated at the gas turbine inlet via the electrically operated isolation valve and cooling pipes. This effectively prevents icing and blockage of the gas turbine inlet in cold, humid weather, thereby increasing the intake airflow.

[0004] However, while the above-mentioned technical solution can direct the heat of the generator to the gas turbine inlet during use, the gas turbine inlet is open during operation. Some of the generator's heat dissipates into the air, while some heat heats the air at the inlet, resulting in limited utilization of the generator's heat and poor anti-icing effect, which has certain drawbacks in use.

[0005] As disclosed in announcement number (CN206397602U), a gas turbine intake heating device includes a heating box, a gas turbine intake pipe, a heater, and a circulating fan. The heating box has an intake port and an outlet. The intake port is located on the lower side of the outer side of the heating box, and the outlet is located on the upper side of the heating box on the same outer side as the intake port. An elastic support is provided inside the heating box, and a heating pipe mounting groove is provided on the elastic support. The gas turbine intake pipe passes through the heating box, and the portion of the gas turbine intake pipe inside the heating box is located in the middle of the interior. The heater and the circulating fan are located on the top outer side of the heating box. This utility model has a reasonable structural design. The combination of the elastic support and the threaded structure of the heating pipe within the heating line effectively solves the problem of heating pipe expansion, significantly reducing the working stress damage to the device, thereby ensuring the safety and reliability of the device. Simultaneously, the design of the jet nozzle ensures the stability of the gas turbine operation.

[0006] However, while the above-mentioned technical solution can fully heat the air at the air inlet, the heater and circulating fan need to be manually turned on during use. It is not possible to turn the heater and circulating fan on and off in time in response to changes in the temperature at the air inlet, which is not flexible enough and can easily lead to energy waste. There are certain drawbacks in the use process. Summary of the Invention

[0007] In view of this, the present invention provides an anti-icing device and method for the air inlet of a marine gas turbine, which has the advantages of uniformly distributing hot air in the rotating control cylinder, thereby improving the air temperature entering the gas turbine air inlet, while preventing cold air from entering the gas turbine air inlet from the connection point and affecting the anti-icing effect, and can automatically control the rotating drive component and the hot air generating component according to the temperature of the outside air.

[0008] An anti-icing device for the air inlet of a marine gas turbine includes:

[0009] Connecting sleeve,

[0010] An abutment assembly is installed at one end of the connecting sleeve and can be connected to the air inlet of the gas turbine.

[0011] And a mounting and securing assembly connected to the abutment kit via a telescopic connecting rod, used to secure the entire device to the gas turbine.

[0012] The connecting sleeve is fitted with a rotary control cylinder, which is rotatably connected to the connecting sleeve via a rotary drive assembly. The inner wall of the rotary control cylinder is provided with a blowing heating assembly for evenly dispersing hot air within the rotary control cylinder. The blowing heating assembly is connected to a hot air generating assembly provided on the inner wall of the abutment assembly. The other end of the connecting sleeve is provided with a temperature control opening and closing assembly for controlling and linking with the rotary drive assembly and the hot air generating assembly.

[0013] Preferably, the rotary drive assembly includes a drive motor, a drive gear, and a drive gear ring. The drive motor is built into the connecting sleeve, and the output shaft of the drive motor extends axially from the connecting sleeve to connect with the drive gear. The drive gear is fixed on the side end face of the connecting sleeve facing the abutting assembly. The end of the rotary control cylinder facing the abutting assembly extends from the connecting sleeve, and the drive gear ring is fixed on the outer circumferential surface of the end of the rotary control cylinder located outside the connecting sleeve and meshes with the drive gear.

[0014] Preferably, the abutment kit includes an annular mounting plate and an abutment sleeve vertically fixed on the annular mounting plate and capable of docking with the gas turbine's air inlet. The annular mounting plate is sleeved on the end of the connecting sleeve, and the end of the abutment sleeve that docks with the gas turbine's air inlet is provided with an annular sealing gasket. The hot gas generating component is fixed on the inner wall of the abutment sleeve.

[0015] Preferably, the hot gas generating assembly includes a heater and a connecting air pump. The heater is provided with an air inlet pipe, which passes through the cylinder wall of the abutting sleeve to connect with the outside atmosphere. The heater is connected to the connecting air pump through a first connecting pipe, and the air outlet of the connecting air pump is connected to a second connecting pipe. The end of the second connecting pipe is connected to the air blowing heating assembly through a rotating connecting joint.

[0016] Preferably, the air-blowing heating assembly includes a strip-shaped mounting plate and air-blowing pipes. The strip-shaped mounting plate is fixed inside the rotating control cylinder and supported in the cylinder body along the radial direction of the rotating control cylinder. The rotating connecting joint is fixed on the strip-shaped mounting plate. Multiple air-blowing pipes are provided. Multiple air-blowing pipes are symmetrically fixed on the inner wall of the rotating control cylinder and their air inlets converge to the rotating connecting joint and are connected to the second connecting pipe of the hot air generating assembly through the rotating connecting joint. Each air-blowing pipe is provided with an air outlet.

[0017] Preferably, the temperature control opening and closing component includes a mounting base with a mounting slot. An expansion block and a control switch are fixedly installed on the top inner wall of the mounting slot. The control switch is located between the two expansion blocks and electrically connected to the drive motor of the air pump of the hot air generating component and the rotary drive component. An elastic drive component is provided at the bottom of the mounting slot. At room temperature, the expansion block is in an expanded state and presses against the elastic drive component. When the air temperature decreases, the expansion block contracts, and the elastic drive component restores its deformation upward to trigger the control switch.

[0018] Preferably, the elastic drive assembly includes a plurality of connecting springs fixed to the bottom of the mounting slot, a lifting drive block fixed to the top of the connecting springs, and a pressing drive block fixed to the top of the lifting drive block, the pressing drive block being located directly below the control switch.

[0019] Preferably, the mounting and fixing assembly includes a mounting strip and a clamping positioning connection assembly. The mounting strip has a limiting groove along its length. The clamping positioning connection assembly includes a clamping drive mechanism, a first arc-shaped clamping block and a second arc-shaped clamping block. The clamping drive mechanism is disposed in the limiting groove. The first arc-shaped clamping block and the second arc-shaped clamping block are symmetrically arranged and can perform clamping or releasing actions under the action of the clamping drive mechanism.

[0020] Preferably, the clamping drive mechanism includes a drive motor, a rotary joint, a bidirectional threaded rod, and a drive slider. The drive motor and the rotary joint are respectively fixed on the inner walls of both ends of the limiting slide groove. One end of the bidirectional threaded rod is connected to the output shaft of the drive motor, and the other end is connected to the rotary joint. A drive slider is threadedly fixed on the threaded rod of the bidirectional threaded rod. The first arc-shaped clamping block is connected to one of the drive sliders through the first vertical connecting post, and the second arc-shaped clamping block is connected to the other drive slider through the second vertical connecting post.

[0021] A method for preventing icing of the aforementioned anti-icing device for a marine gas turbine inlet specifically includes the following steps:

[0022] S1, The device is clamped and fixed onto the gas turbine using the mounting and fixing components;

[0023] S2, retract the telescopic connecting rod to align the abutment sleeve of the abutment kit with the gas turbine's air inlet;

[0024] S3, at room temperature, the expansion block of the temperature control opening and closing component is in an expanded state, and the expansion block presses down on the elastic drive component. The elastic drive component is not in contact with the control switch. When the outside air temperature decreases, the expansion block contracts, and the elastic drive component touches the control switch during the process of restoring its deformation upward, thereby triggering the control switch to open. The control switch controls the start of the heater, the connected air pump and the drive motor. The heater heats the cold air and delivers the hot air to the blowing pipe of the blowing heating component through the second connecting pipe. At the same time, the drive motor drives the drive gear and the drive gear ring to rotate, so that the rotating control cylinder rotates in the connecting sleeve, thereby evenly dispersing the hot air in the rotating control cylinder.

[0025] The hot gas flows through the rotating control cylinder and the contact sleeve before entering the gas turbine's air inlet.

[0026] The beneficial effects of this invention are:

[0027] 1. The present invention clamps and fixes the entire device to the gas turbine through a clamping positioning connection component, and then blows hot air evenly into the rotating control cylinder through a hot air generating component and a blowing heating component, which dries and removes moisture and frost in the rotating control cylinder, and also improves the temperature control effect at the gas turbine inlet and prevents the gas turbine inlet from freezing.

[0028] 2. This invention installs a temperature control opening and closing component on the connecting sleeve and interlocks the temperature control opening and closing component with the rotary drive component and the hot gas generating component. The device can be automatically opened or closed according to changes in the external temperature, allowing for flexible control. The gas is heated only when the external temperature drops, and the hot gas is evenly diffused into the rotary control cylinder to prevent icing at the gas turbine inlet, making the device more energy-efficient.

[0029] 3. The present invention clamps and fixes the entire device to the marine gas engine by installing and fixing components, which effectively improves the convenience of the overall assembly and disassembly of the device, and also solves the problem that the bolt fixing method used in the prior art is prone to loosening due to the shaking of the marine gas engine.

[0030] 4. The end of the abutment sleeve that is in contact with the gas turbine inlet is provided with an annular sealing gasket. When the abutment sleeve and the gas turbine inlet are connected, the annular sealing gasket can seal the gap between them to prevent cold gas from entering the gas turbine inlet from the connection between the abutment sleeve and the gas turbine, thereby ensuring that the gas temperature at the gas turbine inlet is greater than 0℃. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the installation structure of the clamping positioning connection component of the present invention;

[0034] Figure 3 This is a schematic diagram of the overall structure of the clamping positioning connection component of the present invention;

[0035] Figure 4 This is a schematic diagram of the connection structure between the rotary control cylinder and the connecting sleeve of the present invention;

[0036] Figure 5 This is a schematic diagram of the structure of the rotary drive assembly of the present invention;

[0037] Figure 6 This is a schematic diagram of the structure of the rotary air-blowing heating assembly of the present invention;

[0038] Figure 7 This is a schematic diagram of the temperature-controlled opening and closing control component of the present invention;

[0039] Figure 8 This is a schematic diagram of the structure of the hot gas generating component of the present invention;

[0040] In the picture:

[0041] 1. Connecting sleeve;

[0042] 2. Install the strips;

[0043] 3. Clamping positioning connection assembly; 301. Drive motor; 302. Bidirectional threaded rod; 303. Rotary joint; 304. Drive slider; 305. First vertical connecting post; 306. Second vertical connecting post; 307. First arc-shaped clamping block; 308. Second arc-shaped clamping block; 309. Soft friction pad;

[0044] 4. Telescopic connecting rod;

[0045] 5. Circular mounting plate;

[0046] 6. Abutting sleeve;

[0047] 7. Annular sealing gasket;

[0048] 8. Rotary control cylinder;

[0049] 9. Rotary drive assembly; 901. Drive gear; 902. Drive gear ring;

[0050] 10. Air blowing heating assembly; 1001. Strip mounting plate; 1002. Serpentine air blowing pipe;

[0051] 11. Hot gas generating assembly; 1101. Heater; 1102. Connecting air pump; 1103. Air inlet duct; 1104. First connecting pipe; 1105. Second connecting pipe; 1106. Rotary connecting joint;

[0052] 12. Temperature control opening and closing assembly; 1201. Mounting base; 1202. Expansion block; 1203. Control switch; 1204. Connecting spring; 1205. Lifting drive block; 1206. Pressing drive block. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0054] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0055] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms and should not be construed as indicating or implying relative importance. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0056] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0057] In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0058] To better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

[0059] This invention provides an anti-icing device for the air inlet of a marine gas turbine, comprising a connecting sleeve 1, an abutment kit, and a mounting and fixing assembly. The abutment kit is located at one end of the connecting sleeve 1 and can mate with the air inlet of the gas turbine. The mounting and fixing assembly is connected to the abutment kit via a telescopic connecting rod 4 to fix the entire device to the gas turbine. In use, the mounting and fixing assembly clamps and fixes the entire device to the marine gas turbine, effectively improving the convenience of overall assembly and disassembly of the device, and also solving the problem of bolt loosening caused by the shaking of the marine gas turbine when using bolt fixing in the prior art.

[0060] The connecting sleeve 1 is fitted with a rotary control cylinder 8. The rotary control cylinder 8 is rotatably connected to the connecting sleeve 1 through a rotary drive assembly 9. The inner wall of the rotary control cylinder 8 is provided with a blowing heating assembly 10 for evenly dispersing hot air inside the rotary control cylinder 8. The blowing heating assembly 10 is connected to a hot air generating assembly 11 provided on the inner wall of the abutment assembly. The other end of the connecting sleeve 1 is provided with a temperature control opening and closing assembly 12 for controlling and linking with the rotary drive assembly 9 and the hot air generating assembly 11.

[0061] Specifically, the rotary control cylinder 8 is fitted inside the connecting sleeve 1. The outer diameter of the rotary control cylinder 8 is equal to the inner diameter of the connecting sleeve 1, but the end of the rotary control cylinder 8 facing the abutting assembly extends out of the connecting sleeve 1. The rotary control cylinder 8 is rotatably connected to the connecting sleeve 1 through the rotary drive assembly 9.

[0062] The rotary drive assembly 9 includes a drive motor, a drive gear 901, and a drive gear ring 902. The drive motor is built into the connecting sleeve 1, and its output shaft extends axially from the connecting sleeve 1 to connect with the drive gear 901. The drive gear 901 is fixed to the side end face of the connecting sleeve 1 facing the abutment assembly. The drive gear ring 902 is fixed to the outer circumferential surface of the end of the rotary control cylinder 8 located outside the connecting sleeve 1 and meshes with the drive gear 901. When the drive motor is started, its output shaft drives the drive gear 901 to rotate. Under the meshing action of the drive gear 901 and the drive gear ring 902, the rotary control cylinder 8 rotates in the circumferential direction.

[0063] The abutment assembly is fixed to one end of the connecting sleeve 1. The abutment assembly includes an annular mounting plate 5 and an abutment sleeve 6, which is vertically fixed to the annular mounting plate 5 and can be connected to the gas turbine inlet. The abutment sleeve 6 can be vertically fixed to the surface of the annular mounting plate 5 or fixed to the inner ring of the annular mounting plate 5. The inner diameter of the abutment sleeve 6 is not less than the outer diameter of the connecting sleeve 1. The annular mounting plate 5 is sleeved on the end of the connecting sleeve 1. The end of the abutment sleeve 6 that is connected to the gas turbine inlet is provided with an annular sealing gasket 7. When the abutment sleeve 6 is connected to the gas turbine inlet, the annular sealing gasket 7 can seal the gap between the two to prevent external gas from entering the gas turbine inlet from the connection between the abutment sleeve 6 and the gas turbine.

[0064] Preferably, the abutting sleeve 6 can also be designed as a variable diameter sleeve, with its large diameter end fixed on the annular mounting plate 5 and its small diameter end inserted into the gas turbine inlet. An annular sealing gasket 7 is provided on the outer circumference of the small diameter end to seal the gap between the abutting sleeve and the gas turbine inlet, so as to prevent external gas from entering the gas turbine inlet from the connection between the abutting sleeve 6 and the gas turbine.

[0065] The abutment kit is connected to the mounting and fixing assembly via a telescopic connecting rod 4. Specifically, the telescopic end of the telescopic connecting rod 4 is welded and fixed to the surface of the annular mounting plate 5. The mounting and fixing assembly is used to clamp and fix the entire device to the gas turbine. The mounting and fixing assembly includes mounting blocks 2 and clamping positioning connecting components 3.

[0066] A limiting groove is provided on the mounting strip 2 along its length direction. In this embodiment, the limiting groove is located at the bottom of the mounting strip 2.

[0067] The clamping positioning connection assembly 3 includes a clamping drive mechanism, a first arc-shaped clamping block 307 and a second arc-shaped clamping block 308. The clamping drive mechanism is set in the limiting slide groove. The first arc-shaped clamping block 307 and the second arc-shaped clamping block 308 are symmetrically arranged and can perform clamping or opening actions under the action of the clamping drive mechanism.

[0068] The clamping drive mechanism is used to drive the first arc-shaped clamping block 307 and the second arc-shaped clamping block 308 to clamp or open. The clamping drive mechanism includes a drive motor 301, a rotary joint 303, a bidirectional threaded rod 302, and a drive slider 304. The drive motor 301 and the rotary joint 303 are respectively fixed on the inner walls of the two ends of the limiting slide groove. One end of the bidirectional threaded rod 302 is connected to the output shaft of the drive motor 301, and the other end is connected to the rotary joint 303. The reverse thread ends of the bidirectional threaded rod 302 are respectively threaded to a drive slider 304. The first arc-shaped clamping block 307 is connected to one of the drive sliders 304 through a first vertical connecting post 305, and the second arc-shaped clamping block 308 is connected to the other drive slider 304 through a second vertical connecting post 306. When the drive motor 301 is turned on, the output shaft of the drive motor 301 rotates the bidirectional threaded rod 302, thereby causing the two drive sliders 304 to slide in opposite directions within the limiting groove. When the two drive sliders 304 slide, they can drive the first arc-shaped clamping block 307 and the second arc-shaped clamping block 308 to move synchronously, thereby realizing the clamping or opening action.

[0069] Preferably, soft friction pads 309 are provided on the end faces of the first arc-shaped clamping block 307 and the second arc-shaped clamping block 308 that contact the gas turbine, so as to avoid wear and damage to the outer surface of the gas turbine when the device is clamped on the gas turbine. When the two drive sliders 304 are controlled to slide in opposite directions in the limiting groove, the first vertical connecting column 305 and the second vertical connecting column 306 drive the first arc-shaped clamping block 307 and the second arc-shaped clamping block 308 to move closer or further away, so that the first arc-shaped clamping block 307 and the second arc-shaped clamping block 308 are clamped and fixed on the marine gas turbine. Under the action of the soft friction pads 309, effective protection of the marine gas turbine is achieved, and the overall robustness of the device is improved.

[0070] The hot gas generating component 11 is fixed on the inner wall of the abutting sleeve 6 and is used to obtain cold air from the outside and heat the gas.

[0071] The hot air generating assembly 11 includes a heater 1101 and a connecting air pump 1102, both of which are fixed to the inner wall of the abutment sleeve 6. The heater 1101 is equipped with an air inlet duct 1103, which passes through the wall of the abutment sleeve 6 to connect with the outside atmosphere. The heater 1101 is connected to the connecting air pump 1102 via a first connecting pipe 1104. The outlet of the connecting air pump 1102 is connected to a second connecting pipe 1105, the end of which is connected to the air blowing heating assembly 10 via a rotating connecting joint 1106. When outside cold air enters the heater 1101 through the air inlet duct 1103 for heating, the heated air enters the air pump 1102 through the first connecting pipe 1104 and is then delivered to the air blowing heating assembly 10 through the second connecting pipe 1105.

[0072] The air blowing heating assembly 10 is fixed on the inner wall of the rotary control cylinder 8 to evenly diffuse hot air into the rotary control cylinder 8.

[0073] The air-blowing heating assembly 10 includes a strip-shaped mounting plate 1001 and an air-blowing pipe 1002. The strip-shaped mounting plate 1001 is fixed inside the rotary control cylinder 8 and supported in the cylinder body along the radial direction of the rotary control cylinder 8. The rotary connecting joint 1106 is fixed on the strip-shaped mounting plate 1001. Multiple air-blowing pipes 1002 are provided. Multiple air-blowing pipes are symmetrically fixed on the inner wall of the rotary control cylinder 8 and their air inlets converge to the rotary connecting joint 1106 and are connected to the second connecting pipe 1105 of the hot air generating assembly 11 through the rotary connecting joint 1106. Each air-blowing pipe 1002 is provided with an air outlet.

[0074] In this embodiment, the strip mounting plate 1001 is vertically fixed at the center of the rotating control cylinder 8, and the air blowing pipe 1002 is a serpentine air blowing pipe, with two serpentine air blowing pipes arranged symmetrically. When the rotating control cylinder 8 rotates, the strip mounting plate 1001 and the air blowing pipe 1002 rotate synchronously with the rotating control cylinder 8. Since the air blowing pipe 1002 and the second connecting pipe 1105 are torsional connected through the rotating connecting joint 1106, the gas heated by the hot gas generating component 11 can be stably delivered to the air blowing pipe 1002 through the second connecting pipe 1105, so that the air blowing pipe 1002 can evenly diffuse the hot gas in the rotating control cylinder 8, dry and remove the moisture and frost in the rotating control cylinder 8, and at the same time improve the temperature control effect at the air inlet of the ship's gas engine, thus improving the anti-icing effect of the air inlet of the ship's gas engine.

[0075] The temperature control start-stop component 12 is installed at the other end of the connecting sleeve 1 and is used to trigger the start-stop action of the hot gas generating component 11 and the rotary drive component 9 according to the change of the external temperature.

[0076] The temperature control opening and closing component 12 includes a mounting base 1201, on which a mounting slot is provided. An expansion block 1202 and a control switch 1203 are fixedly installed on the top inner wall of the mounting slot. The control switch 1203 is located between the two expansion blocks 1202 and is electrically connected to the connecting air pump 1102 of the hot air generating component 11 and the drive motor of the rotary drive component 9. An elastic drive component is provided at the bottom of the mounting slot. At room temperature, the expansion block 1202 is in an expanded state and presses against the elastic drive component. When the air temperature decreases, the expansion block 1202 contracts, and the elastic drive component restores its deformation upward to trigger the control switch 1203.

[0077] The elastic drive assembly includes multiple connecting springs 1204 fixed to the bottom of the mounting slot, a lifting drive block 1205 fixed to the top of the connecting springs 1204, and a pressing drive block 1206 fixed to the top of the lifting drive block 1205. The pressing drive block 1206 is located directly below the control switch 1203. At room temperature, the expansion block 1202 is in an expanded state and presses down on the lifting drive block 1205, compressing the connecting springs 1204. When the air temperature decreases and the expansion block 1202 contracts, the lifting drive block 1205 releases the pressure of the expansion block 1204. After the downward pressure of 2, the lifting drive block 1205 moves upward under the action of the elastic force of the connecting spring 1204, so that the pressing drive block 1206 touches the control switch 1203, thereby triggering the control switch 1203. The control switch 1203 controls the start of the heater 1101, the connecting air pump 1102 and the built-in drive motor in the connecting sleeve 1, realizing the automatic control of the heater 1101, the connecting air pump 1102 and the drive motor. The device can be automatically turned on or off according to the changes in the external temperature, and the device can be flexibly controlled, making the use of the device more energy-efficient.

[0078] In this embodiment, the mounting base 1201 is an arc-shaped mounting base, the curvature of which matches the curvature of the cylinder at its mounting position.

[0079] The present invention also provides an anti-icing method for the aforementioned anti-icing device for the air inlet of a marine gas turbine, specifically including the following steps:

[0080] S1, The device is clamped and fixed onto the gas turbine using the mounting and fixing components;

[0081] S2, retract the telescopic connecting rod 4 so that the abutting sleeve 6 of the abutting kit is aligned with the air inlet of the gas turbine;

[0082] S3, at room temperature, the expansion block 1202 of the temperature control opening and closing component 12 is in an expanded state. The expansion block 1202 presses down on the elastic drive component. The elastic drive component does not contact the control switch 1203. When the outside air temperature decreases, the expansion block 1202 contracts. During the process of the elastic drive component recovering its deformation upward, it touches the control switch 1203, thereby triggering the opening of the control switch 1203. The control switch 1203 controls the start of the heater 1101, the connection air pump 1102 and the drive motor. The heater 1101 heats the cold air and delivers the hot air through the second connecting pipe 1105 to the blowing pipe 1002 of the blowing heating component 10. At the same time, the drive motor drives the drive gear 901 and the drive gear ring 902 to rotate, causing the rotating control cylinder 8 to rotate in the connecting sleeve 1, thereby evenly dispersing the hot air in the rotating control cylinder 8.

[0083] The hot air flows through the rotating control cylinder 8 and the abutment sleeve 6 before entering the gas turbine's air inlet.

[0084] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A device for preventing icing at the air inlet of a marine gas turbine, characterized in that, include: Connecting sleeve (1), An abutment assembly is provided at one end of the connecting sleeve (1) and can be connected to the air inlet of the gas turbine. And a mounting and fixing assembly connected to the abutment kit via a telescopic connecting rod (4) to secure the entire device to the gas turbine. The connecting sleeve (1) is fitted with a rotating control cylinder (8), which is rotatably connected to the connecting sleeve (1) via a rotating drive assembly (9). The inner wall of the rotating control cylinder (8) is provided with a blowing heating assembly (10) for evenly dispersing hot air within the rotating control cylinder (8). The blowing heating assembly (10) is connected to a hot air generating assembly (11) provided on the inner wall of the abutment assembly. The other end of the connecting sleeve (1) is provided with a temperature control opening and closing assembly (12) for controlling and linking with the rotating drive assembly (9) and the hot air generating assembly (11).

2. The anti-icing device for the air inlet of a marine gas turbine according to claim 1, characterized in that, The rotary drive assembly (9) includes a drive motor, a drive gear (901), and a drive gear ring (902). The drive motor is built into the connecting sleeve (1). The output shaft of the drive motor extends axially from the connecting sleeve (1) and is connected to the drive gear (901). The drive gear (901) is fixed on the side end face of the connecting sleeve (1) facing the abutting kit. The end of the rotary control cylinder (8) facing the abutting kit extends from the connecting sleeve (1). The drive gear ring (902) is fixed on the outer circumferential surface of the end of the rotary control cylinder (8) located outside the connecting sleeve (1) and meshes with the drive gear (901).

3. The anti-icing device for the air inlet of a marine gas turbine according to claim 1 or 2, characterized in that, The abutment kit includes an annular mounting plate (5) and an abutment sleeve (6) that is vertically fixed on the annular mounting plate and can be connected to the gas turbine inlet. The annular mounting plate (5) is sleeved on the end of the connecting sleeve (1). The end of the abutment sleeve (6) that is connected to the gas turbine inlet is provided with an annular sealing gasket (7). The hot gas generating assembly (11) is fixed on the inner wall of the abutment sleeve (6).

4. The anti-icing device for the air inlet of a marine gas turbine according to claim 3, characterized in that, The hot air generating assembly (11) includes a heater (1101) and a connecting air pump (1102). The heater (1101) is provided with an air inlet pipe (1103). The air inlet pipe (1103) passes through the cylinder wall of the sleeve (6) to connect with the outside atmosphere. The heater (1101) is connected to the connecting air pump (1102) through a first connecting pipe (1104). The outlet of the connecting air pump (1102) is connected to a second connecting pipe (1105). The end of the second connecting pipe (1105) is connected to the air blowing heating assembly (10) through a rotating connecting joint (1106).

5. The anti-icing device for the air inlet of a marine gas turbine according to claim 4, characterized in that, The air-blowing heating assembly (10) includes a strip mounting plate (1001) and an air-blowing pipe (1002). The strip mounting plate (1001) is fixed inside the rotary control cylinder (8) and supported in the cylinder along the radial direction of the rotary control cylinder (8). The rotary connecting joint (1106) is fixed on the strip mounting plate (1001). Multiple air-blowing pipes (1002) are provided. Multiple air-blowing pipes are symmetrically fixed on the inner wall of the rotary control cylinder (8) and their air inlets converge to the rotary connecting joint (1106) and are connected to the second connecting pipe (1105) of the hot air generating assembly (11) through the rotary connecting joint (1106). Each air-blowing pipe (1002) is provided with an air outlet.

6. The anti-icing device for the air inlet of a marine gas turbine according to claim 1, characterized in that, The temperature control opening and closing component (12) includes a mounting base (1201), which has a mounting slot. An expansion block (1202) and a control switch (1203) are fixedly installed on the top inner wall of the mounting slot. The control switch (1203) is located between the two expansion blocks (1202) and is electrically connected to the connecting air pump (1102) of the hot air generating component (11) and the drive motor of the rotary drive component (9). An elastic drive component is provided at the bottom of the mounting slot. At room temperature, the expansion block (1202) is in an expanded state and presses against the elastic drive component. When the air temperature decreases, the expansion block (1202) contracts, and the elastic drive component restores its deformation upward to trigger the control switch (1203).

7. The anti-icing device for the air inlet of a marine gas turbine according to claim 6, characterized in that, The elastic drive assembly includes multiple connecting springs (1204) fixed to the bottom of the mounting slot, a lifting drive block (1205) fixed to the top of the connecting springs (1204), and a pressing drive block (1206) fixed to the top of the lifting drive block (1205), the pressing drive block (1206) being located directly below the control switch (1203).

8. The anti-icing device for the air inlet of a marine gas turbine according to claim 1, characterized in that, The mounting and fixing assembly includes a mounting strip (2) and a clamping positioning connection assembly (3). A limiting groove is provided on the mounting strip (2) along its length direction. The clamping positioning connection assembly (3) includes a clamping drive mechanism, a first arc-shaped clamping block (307) and a second arc-shaped clamping block (308). The clamping drive mechanism is set in the limiting groove. The first arc-shaped clamping block (307) and the second arc-shaped clamping block (308) are symmetrically arranged and can perform clamping or releasing actions under the action of the clamping drive mechanism.

9. The anti-icing device for the air inlet of a marine gas turbine according to claim 8, characterized in that, The clamping drive mechanism includes a drive motor (301), a rotary joint (303), a bidirectional threaded rod (302), and a drive slider (304). The drive motor (301) and the rotary joint (303) are respectively fixed on the inner walls of the two ends of the limiting slide groove. One end of the bidirectional threaded rod (302) is connected to the output shaft of the drive motor (301), and the other end is connected to the rotary joint (303). A drive slider (304) is threadedly fixed on the threaded rod of the bidirectional threaded rod (302). The first arc-shaped clamping block (307) is connected to one of the drive sliders (304) through the first vertical connecting post (305), and the second arc-shaped clamping block (308) is connected to the other drive slider (304) through the second vertical connecting post (306).

10. A method for preventing icing in the anti-icing device for the air inlet of a marine gas turbine according to any one of claims 1-9, characterized in that, Specifically, the following steps are included: S1, The device is clamped and fixed onto the gas turbine using the mounting and fixing components; S2, retract the telescopic connecting rod (4) so ​​that the abutting sleeve (6) of the abutting kit is in contact with the gas turbine inlet; S3, at room temperature, the expansion block (1202) of the temperature control opening and closing component (12) is in an expanded state. The expansion block (1202) presses down on the elastic drive component. The elastic drive component does not contact the control switch (1203). When the outside air temperature decreases, the expansion block (1202) contracts. During the process of the elastic drive component recovering its deformation upward, it touches the control switch (1203), thereby triggering the opening of the control switch (1203). The control switch (1203) controls the start of the heater (1101), the connection air pump (1102) and the drive motor. The heater (1101) heats the cold air and delivers the hot air through the second connecting pipe (1105) to the blowing pipe (1002) of the blowing heating component (10). At the same time, the drive motor drives the drive gear (901) and the drive gear ring (902) to rotate, so that the rotating control cylinder (8) rotates in the connecting sleeve (1), thereby evenly dispersing the hot air in the rotating control cylinder (8). The hot air flows through the rotating control cylinder (8) and the abutment sleeve (6) before entering the gas turbine inlet.

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