Wind turbine liquid cooling system filtering device and wind turbine liquid cooling system

Abstract

The present invention discloses a filter device for a wind turbine liquid cooling system and a wind turbine liquid cooling system. The filter device includes a filter sleeve and a filter assembly disposed in the filter sleeve. A first hose is connected to a first end of the filter sleeve, an end of the first hose is connected to a first connecting pipe, and a first valve is provided on the first connecting pipe. A second hose is connected to a second end of the filter sleeve, an end of the second hose is connected to a second connecting pipe, and a second valve is provided on the second connecting pipe. The present invention can effectively prevent contaminants from entering a heat exchanger in a wind turbine liquid cooling system, effectively avoiding the need to disassemble and clean the heat exchanger, and reducing the difficulty of the work.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind power generation equipment, and in particular relates to a wind turbine liquid cooling system filtering device and a wind turbine liquid cooling system. Background Art

[0002] Wind turbine liquid cooling systems offer more efficient heat exchange than air-cooled systems. Therefore, large wind turbines utilize liquid cooling systems for their gearboxes, generators, inverters, hydraulic stations, and other systems. The cleanliness of the coolant in a liquid cooling system directly impacts the system's heat exchange performance. Once the coolant becomes contaminated, contaminants can be absorbed into the heat exchanger or cause blockage in heat exchange components, reducing the cooling performance of the gearbox, generator, inverter, and hydraulic station, leading to turbine capacity reduction or even power shutdown. Currently, the only way to treat contaminated heat exchangers is to dismantle, clean, and replace them. This method requires draining all coolant before dismantling the heat exchanger and then refilling it after cleaning. Sealed heat exchangers cannot be cleaned from the tower and must be moved below the tower, a task that is both time-consuming and difficult. Summary of the Invention

[0003] In response to the problems existing in the prior art, the present invention provides a wind turbine liquid cooling system filtering device and a wind turbine liquid cooling system, which can effectively prevent pollutants from entering the heat exchanger of the wind turbine liquid cooling system, effectively avoid the disassembly and cleaning of the heat exchanger, and reduce the difficulty of the work.

[0004] In order to solve the above technical problems, the present invention is implemented through the following technical solutions:

[0005] A wind turbine liquid cooling system filtering device includes a filter cartridge and a filter cartridge assembly disposed in the filter cartridge cartridge. A first end of the filter cartridge cartridge is connected to a first hose, an end of the first hose is connected to a first connecting pipe, and a first valve is provided on the first connecting pipe; a second end of the filter cartridge cartridge is connected to a second hose, an end of the second hose is connected to a second connecting pipe, and a second valve is provided on the second connecting pipe.

[0006] Furthermore, a first pressure sensor and a second pressure sensor are respectively provided at the first end and the second end of the filter cartridge sleeve.

[0007] Furthermore, a first flow sensor and a second flow sensor are respectively provided at the first end and the second end of the filter cartridge sleeve.

[0008] Furthermore, a temperature sensor is provided at the first end of the filter element sleeve.

[0009] Furthermore, one end of the first hose is fastened to the first connecting pipe via a first clamp, and the other end of the first hose is fastened to the first end of the filter element sleeve via a second clamp.

[0010] Furthermore, one end of the second hose is fastened to the second end of the filter cartridge sleeve via a third clamp, and the other end of the second hose is fastened to the second connecting pipe via a fourth clamp.

[0011] Furthermore, the first valve is a ball valve.

[0012] Furthermore, the second valve is a ball valve.

[0013] A wind turbine liquid cooling system, wherein the cooling liquid inlet and outlet of a heat exchanger in the wind turbine liquid cooling system are both connected with the filtering device.

[0014] Furthermore, the first connecting pipe of one of the filtering devices is connected to the first coolant inlet pipe, and the second connecting pipe is connected to the coolant inlet of the heat exchanger through the second coolant inlet pipe; the first connecting pipe of another of the filtering devices is connected through the first coolant outlet pipe, and the second connecting pipe is connected to the second coolant outlet pipe.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] The present invention provides a filter device for a wind turbine liquid cooling system. When in use, the coolant inlet and outlet of a heat exchanger in the wind turbine liquid cooling system are both connected to the filter device. The first connecting pipe of one filter device is connected to the first coolant inlet pipe, and the second connecting pipe is connected to the coolant inlet of the heat exchanger via the second coolant inlet pipe; the first connecting pipe of another filter device is connected via the first coolant outlet pipe, and the second connecting pipe is connected to the second coolant outlet pipe. The filter device is used to pre-adsorb and filter impurities in the coolant to prevent impurities from entering the heat exchanger. Under normal operating conditions of the wind turbine liquid cooling system, the first valve and the second valve are in an open state. The filter device before the heat exchanger can filter pollutants generated by the cooling water pipe and the cooling pump station, and the filter device after the heat exchanger can filter pollutants generated by the heat exchanger. In other words, the present invention can adsorb pollutants on the filter element, effectively preventing pollutants from entering the heat exchanger of the wind turbine liquid cooling system, effectively avoiding the need to disassemble and clean the heat exchanger, and reducing the difficulty of the work. When the filter element assembly in the filter element sleeve needs to be replaced, the first valve and the second valve are in a closed state, and the clamp connecting the hose assembly is opened to remove the filter device and replace the filter element, which is easy to install and disassemble.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the specific embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of a filter device for a liquid cooling system of a wind turbine according to the present invention;

[0020] Figure 2 The figure is a schematic diagram of a liquid cooling system for a wind turbine generator using the filtering device of the present invention.

[0021] In the figure: 1-filter element sleeve; 2-filter element assembly; 3-first hose; 4-first connecting pipe; 5-first valve; 6-second hose; 7-second connecting pipe; 8-second valve; 9-first pressure sensor; 10-second pressure sensor; 11-first flow sensor; 12-second flow sensor; 13-temperature sensor; 14-first clamp; 15-second clamp; 16-third clamp; 17-fourth clamp; 18-heat exchanger; 19-first coolant inlet pipe; 20-second coolant inlet pipe; 21-first coolant outlet pipe; 22-second coolant outlet pipe. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] As a specific embodiment of the present invention, Figure 1As shown, a wind turbine liquid cooling system filtration device includes a filter sleeve 1 and a filter assembly 2 disposed within the filter sleeve 1. A first hose 3 is connected to the first end of the filter sleeve 1, the end of which is connected to a first connecting pipe 4, on which a first valve 5 is provided. A second hose 6 is connected to the second end of the filter sleeve 1, the end of which is connected to a second connecting pipe 7, on which a second valve 8 is provided. Specifically, one end of the first hose 3 is fastened to the first connecting pipe 4 via a first clamp 14, and the other end of the first hose 3 is fastened to the first end of the filter sleeve 1 via a second clamp 15. One end of the second hose 6 is fastened to the second end of the filter sleeve 1 via a third clamp 16, and the other end of the second hose 6 is fastened to the second connecting pipe 7 via a fourth clamp 17. In this embodiment, both the first valve 5 and the second valve 8 are ball valves.

[0024] During use, the coolant inlet and outlet of the heat exchanger 18 in the liquid cooling system of the wind turbine are both connected to the filter device of the present invention, and the filter device is used to pre-adsorb and filter impurities in the coolant to prevent impurities from entering the heat exchanger. The first valve 5 and the second valve 8 are in a normally open state during normal operation of the cooling system. When the filter element assembly 2 in the filter element sleeve 1 needs to be replaced, the flow path can be cut off by the first valve 5 and the second valve 8 before the filter element is replaced, thereby avoiding the work of discharging and re-injecting the coolant before and after cleaning, and reducing the difficulty of the work. The hose is fastened with a clamp. When the filter element assembly 2 needs to be disassembled, the filter element assembly 2 can be removed by opening the clamp, which facilitates installation and disassembly operations.

[0025] As a more preferred embodiment, Figure 1 As shown, a first pressure sensor 9 and a second pressure sensor 10 are respectively provided at the first end and the second end of the filter element sleeve 1. The first pressure sensor 9 and the second pressure sensor 10 monitor the pressure before and after the filter element assembly 2. The blockage degree of the filter element is judged according to the pressure difference obtained by monitoring, and an early warning is issued. In this embodiment, an early warning can be issued three months in advance to achieve predictive operation and maintenance.

[0026] On the basis of the above embodiment, it is more preferred that Figure 1 As shown, a first flow sensor 11 and a second flow sensor 12 are respectively provided at the first end and the second end of the filter element sleeve 1. The first flow sensor 11 and the second flow sensor 12 monitor the flow before and after the filter element assembly 2. The blockage degree of the filter element is judged according to the flow difference obtained by monitoring, and an early warning is issued. Combined with the pressure difference, the judgment of the blockage degree is more accurate.

[0027] On the basis of the above embodiment, it is more preferred that Figure 1As shown, a temperature sensor 13 is provided at the first end of the filter cartridge sleeve 1, and the temperature of the coolant is monitored by the temperature sensor 13. Specifically, the coolant inlet and outlet of the heat exchanger 18 in the wind turbine liquid cooling system are both connected to the filter device of the present invention. The temperature sensor 13 can monitor the temperature of the coolant entering the heat exchanger 18 and the temperature of the coolant exiting the heat exchanger 18.

[0028] The heat exchanger mentioned in the present invention is the heat exchanger of each subsystem of the wind turbine, including but not limited to the generator heat exchanger, gearbox heat exchanger, hydraulic station heat exchanger and inverter heat exchanger.

[0029] like Figure 2 As shown, the present invention also provides a wind turbine liquid cooling system in which the coolant inlet and outlet of a heat exchanger 18 are both connected to the filter device disclosed in the present invention. Specifically, the first connecting pipe 4 of one filter device is connected to a first coolant inlet pipe 19, and the second connecting pipe 7 is connected to the coolant inlet of the heat exchanger 18 via a second coolant inlet pipe 20. The first connecting pipe 4 of another filter device is connected via a first coolant outlet pipe 21, and the second connecting pipe 7 is connected to a second coolant outlet pipe 22.

[0030] When the wind turbine liquid cooling system is operating normally, the first valve 5 and the second valve 8 are in the open state, and the filter element can absorb and filter contaminants in the coolant. The pressure sensors, flow sensors, and temperature sensors before and after the filter element can monitor the working status of the filter element. The filter device before the heat exchanger can filter contaminants generated by the cooling water pipe and the cooling pump station, and the filter device after the heat exchanger can filter contaminants generated by the heat exchanger. When the filter element assembly 2 in the filter element sleeve 1 needs to be replaced, the first valve 5 and the second valve 8 are in the closed state. The filter device can be removed by opening the clamp connecting the hose assembly and the filter element can be replaced. The filter device is installed before and after the heat exchanger, and the source of the contaminants can be determined to be the pipeline or a heat exchanger of a certain system by monitoring the degree of adsorption of contaminants by the filter device.

[0031] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A wind turbine liquid cooling system, characterized in that: A cooling liquid inlet and outlet of a heat exchanger (18) in a liquid cooling system of a wind turbine generator are both connected to a filter device for the liquid cooling system of the wind turbine generator, comprising a filter cartridge (1) and a filter cartridge assembly (2) arranged in the filter cartridge (1); a first end of the filter cartridge (1) is connected to a first hose (3); an end of the first hose (3) is connected to a first connecting pipe (4); a first valve (5) is provided on the first connecting pipe (4); a second end of the filter cartridge (1) is connected to a second hose (6); an end of the second hose (6) is connected to a second connecting pipe (7); a second valve (8) is provided on the second connecting pipe (7); A first pressure sensor (9) and a second pressure sensor (10) are respectively provided at the first end and the second end of the filter cartridge sleeve (1); A first flow sensor (11) and a second flow sensor (12) are respectively provided at the first end and the second end of the filter cartridge sleeve (1); The first connecting pipe (4) of one of the filter devices is connected to a first coolant inlet pipe (19), and the second connecting pipe (7) is connected to the coolant inlet of the heat exchanger (18) via the second coolant inlet pipe (20); the first connecting pipe (4) of the other filter device is connected via a first coolant outlet pipe (21), and the second connecting pipe (7) is connected to the second coolant outlet pipe (22).

2. A wind turbine liquid cooling system according to claim 1, characterized in that: A temperature sensor (13) is provided at the first end of the filter cartridge sleeve (1).

3. The liquid cooling system for a wind turbine generator according to claim 1, characterized in that: One end of the first hose (3) is fastened to the first connecting pipe (4) via a first clamp (14), and the other end of the first hose (3) is fastened to the first end of the filter cartridge sleeve (1) via a second clamp (15).

4. The liquid cooling system for a wind turbine generator according to claim 1, characterized in that: One end of the second hose (6) is fastened to the second end of the filter cartridge sleeve (1) via a third clamp (16), and the other end of the second hose (6) is fastened to the second connecting pipe (7) via a fourth clamp (17).

5. The liquid cooling system for a wind turbine generator according to claim 1, characterized in that: The first valve (5) is a ball valve.

6. The wind turbine liquid cooling system according to claim 1, characterized in that: The second valve (8) is a ball valve.

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