Marine inertia separation device with heating function

Abstract

The application aims to provide a marine inertial separation device with heating function, comprising an inertial separation device unit, the inertial separation device unit comprising adjacent main heating separation blades and auxiliary heating separation blades, the main heating separation blade comprising n+1 heating separation units connected in series, the two ends of the n+1 heating separation units being respectively a blade front end fillet and a main heating separation blade outlet guide plate, the auxiliary heating separation blade comprising n heating separation units connected in series, the two ends of the n heating separation units being respectively an auxiliary heating separation blade front guide plate and an auxiliary heating separation blade rear guide plate; the inertial separation device units are arranged in parallel. The application realizes the effects of deicing and filtering at the same time under the limitation of limited resistance loss through structural design and layout, and guarantees the safe and stable operation of the gas turbine.

Description

Technical Field

[0001] The present invention relates to a gas turbine air intake device, specifically an air intake anti-icing device. Background Technology

[0002] Gas turbines are widely used in marine, aviation, power generation, and gas pipeline industries due to their advantages such as high single-unit power, high power density, and high reliability. Marine gas turbines, however, are prone to icing in their intake ducts due to their long distances, complex structures, and operation in high-salt-spray, humid, and cold air environments. Icing in the intake system often occurs on the surface of the intake filter, potentially causing blockage. If not addressed promptly, this can reduce the intake airflow, affecting the turbine's efficiency and, in severe cases, disrupting its normal operation. Currently, common anti-icing measures both domestically and internationally involve drawing the high-temperature, high-pressure compressed gas from the compressor to the intake to heat the incoming humid air for icing, or heating the intake itself. However, these measures further increase intake resistance within the intake duct, potentially threatening the stable and safe operation of the gas turbine and affecting its normal functioning. Summary of the Invention

[0003] The purpose of this invention is to provide a marine inertial separation device with heating function that is highly efficient, has low resistance, and strong comprehensive capabilities.

[0004] The objective of this invention is achieved as follows:

[0005] This invention discloses a marine inertial separation device with heating function, characterized in that: it includes an inertial separation device unit, which includes adjacent main heating separation blades and auxiliary heating separation blades. The main heating separation blade includes n+1 connected heating separation units, with the two ends of the n+1 heating separation units being the blade tip fillet and the main heating separation blade outlet guide plate, respectively. The auxiliary heating separation blade includes n connected heating separation units, with the two ends of the n heating separation units being the auxiliary heating separation blade front guide plate and the auxiliary heating separation blade rear guide plate, respectively. The inertial separation device units are arranged in parallel with each other.

[0006] The present invention may also include:

[0007] 1. The heating separation unit is provided with a hot steam heating channel, and a left drainage groove and a right drainage groove are respectively provided on both sides of the hot steam heating channel.

[0008] 2. The opening directions of the left and right drainage channels are opposite to the direction of the incoming air flow.

[0009] 3. The shortest distance from the hot steam heating channel to the left and right drainage channels is δ, the depth of the left and right drainage channels is 2δ, and the wall thickness of the left and right drainage channels is δ.

[0010] 4. The central angle corresponding to the arc length of the left and right drainage channels is θ, and θ ranges from 45° to 75°.

[0011] 5. The distance between the centers of two adjacent hot steam heating channels is L; the diameter of the rounded corner at the front end of the main heating separation blade is 2δ; the thickness of the front guide vane of the auxiliary heating separation blade is 2δ, the diameter of the front chamfer circle is 2δ, and the length is L / 2; the thickness of the outlet guide vane of the main heating separation blade is 2δ, the diameter of the end chamfer circle is 2δ, and the length is L; the thickness of the rear guide vane of the auxiliary heating separation blade is 2δ, the diameter of the end chamfer circle is 2δ, and the length is 3L / 2.

[0012] 6. The diameter D of the hot steam heating channel shall not be less than 51mm, the wall thickness δ shall not be less than 2mm, and it shall be made of 316L stainless steel with a pressure resistance of 3.0Mpa and a high temperature resistance of 500K.

[0013] The advantages of this invention are as follows: Through a fixed structural design, high-temperature, high-pressure steam from the marine anti-icing steam boiler is introduced into the heating tubes via pipelines, while simultaneously ensuring the temperature of the intake cold air is higher than the freezing condition, thus achieving de-icing. Drainage channels are incorporated into the heating separation unit to achieve intake air filtration. The structural design and layout achieve both anti-icing / de-icing and filtration effects within limited resistance losses, ensuring the safe and stable operation of the gas turbine. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the heating separation unit. Detailed Implementation

[0016] The invention will now be described in more detail with reference to the accompanying drawings:

[0017] Combination Figure 1-2This invention relates to a marine inertial separation device with heating function, comprising a main heating separation blade 1 and an auxiliary heating separation blade 2. The main heating separation blade 1 consists of n+1 heating separation units 3, a rounded front end 4 at the main heating separation blade outlet, and a main heating separation blade outlet guide plate 5. The auxiliary heating separation blade 2 consists of n heating separation units 3, a front guide plate 10 at the auxiliary heating separation blade, and a rear guide plate 6 at the auxiliary heating separation blade. Each individual heating separation unit 3 has an internal hot steam heating channel 7, with a left drainage channel 8 and a right drainage channel 9 on its left and right sides, respectively. The main heating separation blade 1 and the auxiliary heating separation blade 2 together form a single-stage marine inertial separation device.

[0018] In the heating separation unit 3, the left drainage groove 8 and the right drainage groove 9 are arranged on both sides of the hot steam heating channel 7, and the opening direction of the left drainage groove 8 and the right drainage groove 9 of the heating separation unit 3 is opposite to the direction of the incoming air flow.

[0019] There are n+1 heating separation units 3 on the main heating separation blade 1 and n heating separation units 3 on the auxiliary heating separation blade 2.

[0020] The ends of the main heating separation blade outlet guide plate 5, the auxiliary heating separation blade rear guide plate 6, and the auxiliary heating separation blade front guide plate 10 are all equipped with rounded corner structures.

[0021] The line connecting the center of the central hot steam heating channel 7 of the heating separation unit 3 of the main heating separation blade 1 is parallel to the line connecting the center of the central hot steam heating channel 7 of the heating separation unit 3 of the auxiliary heating separation blade 2, and the distance between these two parallel lines is D / 2+5δ+H.

[0022] The inner diameter of the hot steam heating channel 7 is D; the distance from the front end to the back end along the air inlet direction is L; the left and right drainage channels 8 and 9 are symmetrically arranged on both sides of the hot steam heating channel 7 and have the same size. The distance from the hot steam heating channel 7 to the left and right drainage channels 8 and 9 is δ, the depth of the left and right drainage channels 8 and 9 is 2δ, the wall thickness of the left and right drainage channels 8 and 9 is δ, and the central angle corresponding to the arc length of the left and right drainage channels 8 and 9 is θ.

[0023] In the main heating separation blade 1 and the auxiliary heating separation blade 2, the distance between the centers of two adjacent hot steam heating channels 7 is L; the diameter of the front fillet 4 of the main heating separation blade is 2δ; the projected distance of the line connecting the center of the hot steam heating channel 7 in the main heating separation blade 1 to the center of the hot steam heating channel 7 in the auxiliary heating separation blade 2 is D / 2+5δ+H; the thickness of the front guide plate 10 of the auxiliary heating separation blade is 2δ, the diameter of the front chamfer circle is 2δ, and the length is L / 2; the thickness of the outlet guide plate 5 of the main heating separation blade is 2δ, the diameter of the end chamfer circle is 2δ, and the length is L; the thickness of the rear guide plate 6 of the auxiliary heating separation blade is 2δ, the diameter of the end chamfer circle is 2δ, and the length is 3L / 2.

[0024] exist Figure 1 In this design, the heating and separation unit 3 consists of an internal cylindrical hot steam heating channel 7 and two symmetrical left and right drainage channels 8 and 9. The positional relationships within the heating and separation unit 3 should satisfy the following: the distance from the hot steam heating channel 7 to both the left and right drainage channels 8 and 9 is δ; the depth of both channels 8 and 9 is 2δ; and the wall thickness of both channels 8 and 9 is δ. The central angle corresponding to the arc length of each channel is θ. The hot steam heating channel 7 requires a pipe diameter D of not less than 51mm, a wall thickness δ of not less than 2mm, and is made of 316L stainless steel with a pressure resistance of 3.0Mpa and a high temperature resistance of 500K. The central angle θ corresponding to the arc length of the left and right drainage channels 8 and 9 ranges from 45° to 75°. The separation efficiency varies from 80% to 90% due to the influence of θ.

[0025] exist Figure 1 In this configuration, the main heating separation blade 1 is composed of the front fillet 4 of the main heating separation blade, the outlet guide plate 5 of the main heating separation blade, n+1 heating separation units 3, and the outlet guide plate of the main heating separation blade 1. The auxiliary heating separation blade 2 is composed of the front guide plate 10 of the auxiliary heating separation blade, n heating separation units 3, and the rear guide plate 6 of the auxiliary heating separation blade. The line connecting the centers of the central hot steam heating channels 7 of the heating separation units 3 of the main heating separation blade 1 is parallel to the line connecting the centers of the central hot steam heating channels 7 of the heating separation units 3 of the auxiliary heating separation blade 2, and the distance between these two parallel lines is D / 2+5δ+H. The value of H should ensure that the resistance loss of the marine inertial separation device is within 1000Pa.

[0026] The incoming cold, moist air, containing salt spray and water droplets from the ocean, flows through the fluid channel between the main heating separation blade 1 and the auxiliary heating separation blade 2. Due to inertia, the water droplets adhere tightly to the wall at the bend. Heated by internal hot steam, the low-temperature droplets cannot freeze on the surface and thus converge and are collected by the hydrophobic groove at the bend. They no longer flow with the mainstream gas and, under gravity, flow downwards, eventually leaving the intake duct. This structure has a total pressure loss of less than 1000 Pa, can achieve a temperature increase of more than 10°C for the cold air, and has a water droplet filtration efficiency of more than 80%.

Claims

1. A marine inertial separation device with heating function, characterized in that: It includes an inertial separation device unit, which includes adjacent main heating separation blades and auxiliary heating separation blades. The main heating separation blade includes n+1 connected heating separation units. The two ends of the n+1 heating separation units are the blade tip fillet and the main heating separation blade outlet guide plate, respectively. The auxiliary heating separation blade includes n connected heating separation units. The two ends of the n heating separation units are the auxiliary heating separation blade front guide plate and the auxiliary heating separation blade rear guide plate, respectively. The inertial separation unit is arranged in parallel with the inertial separation unit; The heating separation unit is provided with a hot steam heating channel, and a left drainage groove and a right drainage groove are respectively provided on both sides of the hot steam heating channel; The shortest distance from the hot steam heating channel to the left and right drainage channels is δ, the depth of the left and right drainage channels is 2δ, and the wall thickness of the left and right drainage channels is δ. The distance between the centers of two adjacent hot steam heating channels is L; the diameter of the rounded corner at the front end of the main heating separation blade is 2δ; The thickness of the front guide vane of the auxiliary heating separation blade is 2δ, the diameter of the front chamfer circle is 2δ, and the length is L / 2; the thickness of the outlet guide vane of the main heating separation blade is 2δ, the diameter of the end chamfer circle is 2δ, and the length is L; the thickness of the rear guide vane of the auxiliary heating separation blade is 2δ, the diameter of the end chamfer circle is 2δ, and the length is 3L / 2.

2. A marine inertial separation device with heating function according to claim 1, characterized in that: The opening directions of the left and right drainage channels are opposite to the direction of the incoming airflow.

3. A marine inertial separation device with heating function according to claim 1, characterized in that: The central angle corresponding to the arc length of the left and right drainage channels is θ, which ranges from 45º to 75º.

4. A marine inertial separation device with heating function according to claim 1, characterized in that: The diameter D of the hot steam heating channel is not less than 51mm, the wall thickness δ is not less than 2mm, and it is made of 316L stainless steel with a pressure resistance of 3.0Mpa and a high temperature resistance of 500K.

Images