Doubly-fed wind turbine generator gearbox temperature control valve detection device

Abstract

The utility model discloses a doubly-fed wind turbine generator gearbox temperature control valve detection device which comprises a groove body, a circulating pump and a temperature controller, gear oil is arranged in the groove body, a heating rod and a temperature sensing probe are arranged in the groove body, and the heating rod and the temperature sensing probe are both electrically connected with the temperature controller. The oil inlet end and the oil outlet end of the circulating pump are connected with the oil inlet hole and the oil outlet hole through two circulating pipelines respectively, a containing unit is arranged in the tank body and comprises a containing cylinder and an end cover, the containing cylinder and the end cover are detachably connected, a through hole is formed in the side wall of the containing cylinder, a center hole is formed in the end cover, and the temperature control valve is placed in the containing cylinder. A spring is arranged between the temperature control valve and the end cover, and the graduated scale penetrates through the center hole to be placed on the temperature control valve. Gear oil in the device is in a circulating flow state, when temperature rise of the gear oil is simulated, the uniformity of the temperature of the gear oil is good, the device fits the actual operation condition of the temperature control valves in the wind turbine generator, the detection effect is good, meanwhile, the device can detect a plurality of temperature control valves, and the detection efficiency of the temperature control valves is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a temperature control valve detection device for a gear box of a double-fed wind turbine set. Background Art

[0002] Wind energy is an inexhaustible clean energy. With the increasing consumption of traditional energy sources such as coal and oil, wind power generation technology has become increasingly important in the field of new energy. The gearbox is an important part of the double-fed wind turbine. Since the wind turbine gearbox has a high speed, a large load, and serious heat generation during operation, the gearbox needs to maintain good heat dissipation performance.

[0003] The gearbox cooling system usually consists of an oil pump, lubricating oil, a two-stage filter device, an air cooler, a temperature control valve, a temperature sensor, a pressure sensor, etc. Among them, the temperature control valve is an important component of the gearbox cooling system. The working principle of the temperature control valve is to push the piston of the temperature control valve to start moving through the thermal expansion and contraction of the valve core in the valve body. The piston of the temperature control valve reacts on the entire valve body to move the entire valve body to achieve oil circuit switching at different temperatures. For example: when the oil temperature is lower than 45°C, the lubricating oil directly enters the gearbox; when the oil temperature is higher than 45°C, the medium of the temperature control valve core expands due to heat, the temperature control valve begins to gradually move, and the lubricating oil begins to enter the gearbox after being cooled by the air cooler. With the increase of ambient temperature in summer or the increase of fan load, gearbox overheating occurs frequently.

[0004] Due to the lack of testing equipment for temperature control valves, it is difficult to judge whether the temperature control valve is damaged by appearance during on-site maintenance. During the current maintenance work of wind farms, when encountering gearbox overheating problems, most of them directly replace the temperature control valve and clean the gearbox air cooler, which greatly increases the consumption cost of temperature control valve spare parts. The utility model patent with application number 202021894098.7 discloses a detection device for a universal temperature control valve for wind turbines. However, the gear oil inside is in a static state. When simulating heating, the uniformity of the gear oil temperature is poor. The temperature sensor cannot truly reflect the temperature at the valve core of the temperature control valve, which is different from the actual operating conditions of the temperature control valve in the wind turbine, and the detection effect is poor. In addition, the equipment cannot perform batch detection on multiple temperature control valves, and the detection efficiency is low. Utility Model Content

[0005] In view of the defects in the prior art, the utility model provides a doubly-fed wind turbine gearbox temperature control valve detection device. The gear oil in the device is in a circulating flow state. When simulating the heating of the gear oil, the gear oil temperature has good uniformity, which fits the actual operation of the temperature control valve in the wind turbine and has good detection effect. At the same time, the device can detect multiple temperature control valves to improve the detection efficiency of the temperature control valves.

[0006] A temperature control valve detection device for a doubly-fed wind turbine gearbox comprises a tank body, a circulation pump and a temperature controller, wherein the tank body contains gear oil, a heating rod and a temperature sensing probe are arranged in the tank body, the heating rod and the temperature sensing probe are electrically connected to the temperature controller, an oil inlet hole and an oil outlet hole are arranged on the tank body, the oil inlet end and the oil outlet end of the circulation pump are respectively connected to the oil inlet hole and the oil outlet hole through two circulation pipes, a placement unit is arranged in the tank body, the placement unit comprises a containing cylinder and an end cover, the containing cylinder and the end cover are detachably connected, a through hole is opened on the side wall of the containing cylinder, a center hole is opened on the end cover, the temperature control valve is placed in the containing cylinder, a spring is arranged between the temperature control valve and the end cover, and a scale passes through the center hole and is placed on the temperature control valve.

[0007] Preferably, the accommodating cylinder and the end cover are threadedly connected.

[0008] Preferably, the number of through holes on the accommodating tube is 2-5.

[0009] Preferably, the number of placement units in the tank body is 2-5.

[0010] Preferably, the scale comprises a cylinder and an end cap, the end cap is connected to the top end of the cylinder, and scale marks are arranged on the cylinder.

[0011] Preferably, the multiple through holes on the accommodating tube are evenly distributed in the circumferential direction around the axis of the accommodating tube.

[0012] Preferably, the multiple placement units in the tank are distributed at equal intervals.

[0013] Preferably, the bottom wall of the tank is connected to a plurality of support columns.

[0014] The beneficial effects of the utility model are embodied in that: in the technical solution, through the cooperation of the tank body, the circulation pump and the temperature controller, when the temperature control valve is tested, the end cover is removed, the piston end of the temperature control valve is downward, and it is placed in the receiving tube, and then the spring is inserted, the end cover is connected to the receiving tube, the value on the measuring ruler is recorded, the temperature controller and the circulation pump are turned on, the temperature controller heats the gear oil through the heating rod, the temperature sensing probe detects the temperature rise of the gear oil, the circulation pump is started to make the gear oil in a circulating flow state, the uniformity of the gear oil heating is improved, and the temperature sensing probe detects the temperature rise of the gear oil. When the head detects that the oil temperature reaches 45°, the valve core of the temperature control valve expands due to the heat, and the piston extends out of the temperature control valve. Under the reverse thrust of the piston, the temperature control valve overcomes the resistance of the spring and moves upward. The value changes on the measuring scale are observed to determine whether the temperature control valve is damaged. The gear oil in this device is in a circulating flow state. When simulating the heating of the gear oil, the temperature uniformity of the gear oil is better, which fits the actual operation of the temperature control valve in the wind turbine set, and the detection effect is better. At the same time, this device can detect multiple temperature control valves to improve the detection efficiency of the temperature control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0016] Figure 1 It is a partial cross-sectional view of the overall structure of the utility model;

[0017] Figure 2 It is a front cross-sectional view of the utility model;

[0018] Figure 3 It is a schematic diagram of the explosion structure of the placement unit in the utility model.

[0019] In the accompanying drawings, 1-tank body, 2-circulation pump, 3-temperature controller, 4-circulation pipeline, 5-placing unit, 6-gear oil, 7-spring, 8-temperature control valve, 11-heating rod, 12-temperature sensing probe, 51-accommodating cylinder, 52-end cover, 53-measuring ruler, 54-through hole, 55-center hole. DETAILED DESCRIPTION

[0020] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0021] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0022] Example 1

[0023] like Figure 1-Figure 3 As shown, in this embodiment, a temperature control valve detection device for a doubly-fed wind turbine gearbox is provided, comprising a tank body 1, a circulating pump 2 and a temperature controller 3. The tank body 1 contains gear oil 6. A heating rod 11 and a temperature sensing probe 12 are arranged in the tank body 1. The heating rod 11 and the temperature sensing probe 12 are electrically connected to the temperature controller 3. The tank body 1 has an oil inlet and an oil outlet. The oil inlet end and the oil outlet end of the circulating pump 2 are respectively connected to the oil inlet and the oil outlet through two circulating pipes 4. A placement unit 5 is arranged in the tank body 1. The placement unit 5 comprises a receiving tube 51 and an end cover 52. The receiving tube 51 and the end cover 52 are detachably connected. A through hole 54 is opened on the side wall of the receiving tube 51, and a center hole 55 is opened on the end cover 52. The temperature control valve 8 is placed in the receiving tube 51. A spring 7 is arranged between the temperature control valve 8 and the end cover 52. A measuring ruler 53 passes through the center hole 55 and is placed on the temperature control valve 8.

[0024] In this embodiment, when the temperature control valve 8 is tested by the cooperation of the tank body 1, the circulation pump 2 and the temperature controller 3, the end cover 52 is removed, the piston end of the temperature control valve 8 is placed downward in the accommodating tube 51, and then the spring 7 is inserted, the end cover 52 is connected to the accommodating tube 51, and the value on the measuring ruler 53 is recorded. The temperature controller 3 and the circulation pump 2 are turned on. The temperature controller 3 heats the gear oil 6 through the heating rod 11, and the temperature sensing probe 12 detects the temperature rise of the gear oil 6. The circulation pump 2 is started to make the gear oil 6 in a circulating flow state to improve the uniformity of the heating of the gear oil 6. When the temperature sensing probe 12 detects that the oil temperature reaches 45°, the valve core of the temperature control valve 8 expands due to the heat, and the piston extends out of the temperature control valve 8. Under the reverse thrust of the piston, the temperature control valve 8 overcomes the resistance of the spring and moves upward. The value change on the measuring ruler 53 is observed, and then it is determined whether the temperature control valve 8 is damaged.

[0025] In this embodiment, the accommodating tube 51 and the end cover 52 are threadedly connected, so as to achieve a detachable connection between the accommodating tube 51 and the end cover 52.

[0026] In this embodiment, the number of through holes 54 on the accommodating tube 51 is 2-5.

[0027] In this embodiment, the number of the placement units 5 in the tank body 1 is 2-5. In this embodiment, multiple placement units 5 are provided to detect multiple temperature control valves 8 at the same time.

[0028] In this embodiment, the measuring ruler 53 comprises a cylinder and an end, wherein the end is connected to the top of the cylinder, and a scale mark is arranged on the cylinder. In this embodiment, the measuring ruler 53 is arranged in a cylindrical shape to facilitate insertion into the center hole 55 .

[0029] In this embodiment, the plurality of through holes 54 on the accommodating cylinder 51 are evenly distributed around the circumference of the axis of the accommodating cylinder 51. In this embodiment, the plurality of through holes 54 are evenly distributed around the circumference of the axis of the accommodating cylinder 51, which facilitates the gear oil 6 to enter and discharge the accommodating cylinder 51, thereby improving the uniformity of heating the gear oil 6.

[0030] In this embodiment, the multiple placement units 5 in the tank body 1 are distributed at equal intervals.

[0031] In this embodiment, the bottom wall of the tank body 1 is connected to a plurality of support columns. In this embodiment, the bottom wall of the tank body 1 is supported by a plurality of support columns.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A double-fed wind turbine gearbox temperature control valve detection device, characterized in that: The invention comprises a tank body (1), a circulation pump (2) and a temperature controller (3), wherein the tank body (1) contains gear oil (6), a heating rod (11) and a temperature sensing probe (12) are arranged in the tank body (1), the heating rod (11) and the temperature sensing probe (12) are both electrically connected to the temperature controller (3), the tank body (1) has an oil inlet and an oil outlet, the oil inlet end and the oil outlet end of the circulation pump (2) are respectively connected to the oil inlet and the oil outlet through two circulation pipes (4), and the tank body (1) is arranged A placement unit (5) is provided, the placement unit (5) comprising a containing cylinder (51) and an end cover (52), the containing cylinder (51) and the end cover (52) being detachably connected, a through hole (54) being provided on the side wall of the containing cylinder (51), a center hole (55) being provided on the end cover (52), a temperature control valve (8) being placed in the containing cylinder (51), a spring (7) being provided between the temperature control valve (8) and the end cover (52), and a measuring ruler (53) passing through the center hole (55) and being placed on the temperature control valve (8).

2. A doubly-fed wind turbine gearbox temperature control valve detection device according to claim 1, characterized in that: The accommodating cylinder (51) and the end cover (52) are threadedly connected.

3. A doubly-fed wind turbine gearbox temperature control valve detection device according to claim 1, characterized in that: The number of through holes (54) on the accommodating cylinder (51) is set to be 2-5.

4. A doubly-fed wind turbine gearbox temperature control valve detection device according to claim 1, characterized in that: The number of the placement units (5) in the tank body (1) is set to 2-5.

5. A doubly-fed wind turbine gearbox temperature control valve detection device according to claim 1, characterized in that: The measuring ruler (53) comprises a cylinder and an end, wherein the end is connected to the top of the cylinder, and scale marks are arranged on the cylinder.

6. A doubly-fed wind turbine gearbox temperature control valve detection device according to claim 3, characterized in that: The plurality of through holes (54) on the accommodating cylinder (51) are evenly distributed in the circumferential direction around the axis of the accommodating cylinder (51).

7. A doubly-fed wind turbine gearbox temperature control valve detection device according to claim 4, characterized in that: The multiple placement units (5) in the tank body (1) are distributed at equal intervals.

8. A doubly-fed wind turbine gearbox temperature control valve detection device according to claim 1, characterized in that: The bottom wall of the tank body (1) is connected to a plurality of support columns.

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