A steam turbine unit lubricating oil tank drying protection device

Abstract

This utility model discloses a drying and protection device for a turbine generator lubricating oil tank, comprising a housing, an inner cylinder and a central column coaxially fixed at the bottom of the housing, the inner cylinder being divided into an outer annular cavity and an inner annular cavity; a cover plate is detachably installed at the opening of the housing; the outer annular cavity is divided into a filter cavity and a dehumidification cavity by two partition plates; the inner cylinder has a first through hole connecting the filter cavity and a second through hole connecting the dehumidification cavity; a drying mesh plate and a dust filter plate are respectively installed in the filter cavity and the dehumidification cavity; an air inlet and an air outlet connecting the filter cavity and the dehumidification cavity are provided on the front side wall of the housing; a suction fan and an exhaust fan are respectively installed at the air inlet and the air outlet; an electric heating wire is installed in the inner annular cavity. This device has a simple and effective structure, the filter element is easy and convenient to replace, and it has excellent structural stability and airtightness, effectively drying and absorbing moisture in the air, ensuring the dryness of the air blown into the bearing housing.

Description

Technical Field

[0001] This utility model belongs to the field of steam turbine maintenance equipment, specifically relating to a steam turbine lubricating oil tank drying and protection device. Background Technology

[0002] When a steam turbine unit is running, in order to ensure smooth return of lubricating oil and effective removal of oil mist from the pipeline after lubrication, an oil mist exhaust fan is generally designed on the lubricating oil tank. When air is drawn into the lubricating oil tank, as the cooling system cools the lubricating oil, moisture in the air in the lubricating oil tank will be released, resulting in trace amounts of water in the lubricating oil. As the amount of moisture increases, it will affect the service life of the lubricating oil.

[0003] A utility model application with application number 2023211314026 discloses a lubricating oil tank drying and protection device. This device filters air using an air filter assembly, heats the air using a heating assembly to increase its dryness, and then further dries the air using a dehumidifying assembly. The air filter assembly, heating assembly, dehumidifying assembly, and blower are all installed on the housing via movable plug-in connections. While this makes assembly and disassembly convenient, it significantly reduces structural stability and airtightness, affecting the device's air drying effect. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model aims to provide a drying and protection device for the lubricating oil tank of a steam turbine unit. This device has a simple and effective structure, easy and convenient filter element replacement, excellent structural stability and airtightness, and can effectively dry and absorb moisture in the air to ensure the dryness of the air blown into the bearing housing.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A drying and protection device for a turbine generator lubricating oil tank includes a housing, which is a cylindrical design with an open top. An inner cylinder and a central column are coaxially fixed at the bottom of the housing, with the central column located at the center of the inner cylinder, dividing the housing into an outer annular cavity and an inner annular cavity. A cover plate is detachably installed at the opening of the housing, with its bottom surface abutting against the top surface of the inner cylinder and the central column. The outer annular cavity is divided into a left-side filter cavity and a right-side dehumidification cavity by corresponding first and second partition plates along the radial direction of the housing. A radially arranged third partition plate is fixed in the inner annular cavity near the second partition plate. A first through-hole connecting the filter cavity and a second through-hole connecting the dehumidification cavity are respectively opened on the inner cylinder on both sides of the third partition plate. A dust filter plate is installed in the filter cavity, and a drying filter plate is installed in the dehumidification cavity. An air inlet and an air outlet are provided on the front side wall of the housing, with the air inlet connecting to the filter cavity and the air outlet connecting to the dehumidification cavity. A suction fan and an exhaust fan are respectively installed at the air inlet and the air outlet. Multiple electric heating wires are installed in the inner annular cavity.

[0007] Preferably, the first partition plate, the second partition plate, and the third partition plate are arranged in the same radial direction of the housing.

[0008] Preferably, the top of the central column is provided with a threaded hole, and the cover plate is fixed in the threaded hole by bolts.

[0009] Preferably, the bottom of the cover plate is provided with a sealing gasket that matches the top of the shell opening, the inner cylinder and the central column.

[0010] Preferably, multiple dust filter screens are provided along the radial direction of the shell, and adjacent dust filter screens are arranged at equal angles.

[0011] Preferably, multiple first slots are provided on the inner walls of both sides of the filter chamber, and the dust filter plate is vertically engaged in two corresponding first slots.

[0012] Preferably, multiple drying mesh plates are provided along the radial direction of the shell, and adjacent drying mesh plates are arranged at equal angles.

[0013] Preferably, multiple second slots are provided on the inner walls of both sides of the dehumidification chamber, and the drying mesh plate is vertically inserted into two corresponding second slots.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. In this application, under the action of the suction fan, air enters the filter chamber through the air inlet, and then flows through the filter chamber to the farthest first through hole into the inner ring chamber. The air will flow once in the inner ring chamber. The heated and dried gas enters the dehumidification chamber through the second through hole. Under the action of the exhaust fan, the air flows from the dehumidification chamber to the farthest air outlet and is discharged. The structure of this application is ingeniously designed so that the air takes the farthest route in the drying chamber, dehumidification chamber and heating chamber, thereby significantly improving the air drying efficiency.

[0016] 2. A threaded hole is provided at the top of the central column, and bolts are provided on the cover plate. The bolts are threaded into the threaded hole, thereby pressing and fixing the cover plate to the top of the housing. Furthermore, a sealing gasket is provided at the bottom of the cover plate to mate with the opening of the housing, the inner cylinder, and the top of the central column. The sealing gasket at the bottom of the cover plate improves the airtightness of the connection between the cover plate and the housing, and, through its mating with the inner cylinder and the central column, divides the space into independent cavities, forming an outer annular cavity and an inner annular cavity.

[0017] 3. This application provides a multi-layer dust filter plate in the filter chamber, which can effectively filter out impurities in the air. The dust filter plate is installed in the first slot by plugging it in, which can significantly improve the convenience of replacing the filter element of this device.

[0018] 4. The drying mesh plate in this application has multiple layers and is installed in the second slot in the dehumidification chamber by plugging in, which can significantly improve the air drying efficiency and the convenience of filter replacement. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0020] Figure 2 This is a top sectional view of the present invention;

[0021] Figure 3 for Figure 1 Enlarged view of point A in the middle. Detailed Implementation

[0022] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of application of this utility model.

[0023] like Figure 1-3 As shown, this utility model proposes a drying and protection device for the lubricating oil tank of a steam turbine unit, including a housing 1, which is a cylindrical design with an opening at the top. An inner cylinder 3 and a central column 4 are coaxially fixed from the outside to the inside at the bottom of the housing 1, with the central column 4 vertically fixed at the center of the housing 1. This divides the interior of the housing 1 into an outer annular cavity and an inner annular cavity 103, with the inner annular cavity 103 serving as a heating chamber. A cover plate 2 is detachably installed at the opening of the housing 1, with the bottom surface of the cover plate 2 abutting against the top surfaces of the inner cylinder 3 and the central column 4. A threaded hole 41 is provided at the top of the central column 4, and a bolt 21 is provided on the cover plate 2, which is threaded into the threaded hole 41, thereby pressing and fixing the cover plate 2 onto the top of the housing 1. Furthermore, a sealing gasket is provided at the bottom of the cover plate 2 to mate with the opening of the housing 1, the top of the inner cylinder 3, and the central column 4. The sealing gasket at the bottom of the cover plate 2 can improve the airtightness of the connection between the cover plate 2 and the housing 1, and through the cooperation with the inner cylinder 3 and the central column 4, it can be divided into independent cavities, forming an outer ring cavity and an inner ring cavity 103.

[0024] The outer annular cavity is divided into a left-side filter cavity 101 and a right-side dehumidification cavity 102 by corresponding first and second partition plates 13 and 14. A radially arranged third partition plate 15 is fixed in the inner annular cavity 103 near the second partition plate 14. The first partition plate 13, the second partition plate 14, and the third partition plate 15 are arranged along the same radial direction of the housing 1. An air inlet 11 and an air outlet 12 are provided on the front side wall of the housing 1. The air inlet 11 connects to the filter cavity 101, and the air outlet 12 connects to the dehumidification cavity 102. A suction fan 111 and an exhaust fan 121 are respectively installed at the air inlet 11 and the air outlet 12. The inner cylinders 3 on the left and right sides of the third partition plate 15 are respectively provided with a first through hole 31 connecting to the filter cavity 101 and a second through hole 32 connecting to the dehumidification cavity 102.

[0025] In this application, under the action of the suction fan 111, air enters the filter chamber 101 through the air inlet 11, and then flows through the filter chamber 101 to the farthest first through hole 31 and enters the inner ring chamber 103. The air will flow once in the inner ring chamber 103. The heated and dried gas enters the dehumidification chamber 102 through the second through hole 32. Under the action of the exhaust fan 121, the air flows from the dehumidification chamber 102 to the farthest air outlet 12 and is discharged. The structure of this application is ingeniously designed so that the air takes the farthest route in the drying chamber, dehumidification chamber 102 and heating chamber, thereby significantly improving the air drying efficiency.

[0026] The filter chamber 101 is provided with a dust filter plate 5. Multiple dust filter plates 5 are provided along the radial direction of the housing 1, and adjacent dust filter plates 5 are arranged at equal angles. Multiple first slots 104 are correspondingly opened on the inner walls of both sides of the filter chamber 101, and the dust filter plates 5 are vertically engaged in two corresponding first slots 104.

[0027] This application provides a multi-layer dust filter plate 5 in the filter chamber 101, which can effectively filter out impurities in the air. The dust filter plate 5 is installed in the first slot 104 by plugging in, which can significantly improve the convenience of replacing the filter element of this device.

[0028] The dehumidification chamber 102 is provided with a drying mesh plate 7; multiple drying mesh plates 7 are provided along the radial direction of the shell 1, and adjacent drying mesh plates 7 are arranged at equal angles. Multiple second slots 105 are correspondingly opened on the inner walls of both sides of the dehumidification chamber 102, and the drying mesh plate 7 is vertically engaged in two corresponding second slots 105.

[0029] In this application, the drying mesh plate 7 is provided with multiple layers and is installed in the second slot 105 in the dehumidification chamber 102 by plugging in, which can significantly improve the air drying efficiency and the convenience of filter replacement.

[0030] Multiple electric heating wires 6 are installed in the inner ring cavity 103. The electric heating wires 6 can be arranged at equal angles along the radial direction of the inner ring cavity 103, so as to effectively heat and dry the air.

[0031] When using this invention, under the action of the suction fan 111 and the exhaust fan 121, air enters the filter chamber 101 through the air inlet 11 for filtration and dust removal, and then enters the inner ring chamber 103 through the first through hole 31. The heated and dried gas enters the dehumidification chamber 102 through the second through hole 32 for further drying, and finally exits from the air outlet 12, ensuring that the air blown into the bearing housing is absolutely dry and preventing the occurrence of water in the lubricating oil tank.

[0032] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A drying and protection device for a steam turbine unit lubricating oil tank, comprising a housing, characterized in that: The housing is a cylindrical design with an opening at the top. An inner cylinder and a central column are coaxially fixed at the bottom of the housing, with the central column located at the center of the inner cylinder, dividing the housing into an outer annular cavity and an inner annular cavity. A cover plate is detachably installed at the opening of the housing, with its bottom surface abutting against the top surface of the inner cylinder and the central column. The outer annular cavity is divided into a left-side filter cavity and a right-side dehumidification cavity by corresponding first and second partition plates along the radial direction of the housing. A radially arranged third partition plate is fixed in the inner annular cavity near the second partition plate. A first through-hole connecting the filter cavity and a second through-hole connecting the dehumidification cavity are respectively opened on the inner cylinder on both sides of the third partition plate. A dust filter plate is installed in the filter cavity, and a drying filter plate is installed in the dehumidification cavity. An air inlet and an air outlet are provided on the front side wall of the housing; the air inlet connects to the filter cavity, and the air outlet connects to the dehumidification cavity. A suction fan and an exhaust fan are respectively installed at the air inlet and the air outlet. Multiple electric heating wires are installed in the inner annular cavity.

2. The turbine unit lubricating oil tank drying protection device according to claim 1, characterized in that: The first partition plate, the second partition plate, and the third partition plate are arranged in the same radial direction of the shell.

3. The turbine unit lubricating oil tank drying protection device according to claim 1, characterized in that: The top of the central column has a threaded hole, and the cover plate is fixed in the threaded hole by bolts.

4. The turbine unit lubricating oil tank drying protection device according to claim 3, characterized in that: The bottom of the cover plate is provided with a sealing gasket that matches the top of the shell opening, the inner cylinder and the central column.

5. The turbine unit lubricating oil tank drying protection device according to claim 1, characterized in that: Multiple dust filter screens are provided along the radial direction of the shell, and adjacent dust filter screens are arranged at equal angles.

6. The turbine unit lubricating oil tank drying protection device according to claim 5, characterized in that: Multiple first slots are correspondingly opened on the inner walls of both sides of the filter chamber, and the dust filter plate is vertically locked in two corresponding first slots.

7. The turbine unit lubricating oil tank drying protection device according to claim 1, characterized in that: The drying mesh plates are provided in multiple ways along the radial direction of the shell, and adjacent drying mesh plates are arranged at equal angles.

8. The turbine unit lubricating oil tank drying protection device according to claim 7, characterized in that: Multiple second slots are correspondingly provided on the inner walls of both sides of the dehumidification chamber, and the drying mesh plate is vertically inserted into two corresponding second slots.

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