Temperature sensor protective cover, temperature sensor assembly and wind turbine generator set

Abstract

The present disclosure relates to a temperature sensor protective cover, a temperature sensor assembly and a wind turbine generator set. The temperature sensor protective cover is applied to the main shaft bearing temperature sensor of the wind turbine generator set. The temperature sensor protective cover includes a protective cover body and a fixing part. The protective cover body has a cavity inside and an opening connected to the cavity is opened at the bottom. The opening is used for the main shaft bearing temperature sensor to enter the cavity, so that the protective cover body can be covered outside the main shaft bearing temperature sensor. The upper surface of the protective cover body is a guide surface, and the guide surface is used to guide the waste grease falling on the guide surface to slide off the protective cover body. The fixing part is arranged at one end of the protective cover body, and the fixing part is used to be detachably fixed on the bearing end cover of the wind turbine generator set. The temperature sensor protective cover provided by the present disclosure can be installed on the bearing end cover and covered on the outside of the main shaft temperature sensor to prevent the waste grease from dripping onto the main shaft bearing temperature sensor.

Description

Technical Field

[0001] The present disclosure relates to the technical field of temperature sensors, and in particular to a temperature sensor protective cover, a temperature sensor assembly and a wind turbine generator set. Background Art

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. The main shaft, as a link in the drive chain, plays a very important role. Therefore, monitoring and maintenance of the main shaft operation are essential. Installing a temperature sensor on the main shaft to monitor the temperature of the main shaft bearing is a good monitoring method.

[0003] Due to the design of the machine model, the main shaft bearing temperature sensor is installed just below the main shaft bearing. During the operation of the wind turbine, after the main shaft bearing is lubricated, waste grease is discharged from the main shaft bearing, and some of the waste grease will drip onto the main shaft bearing temperature sensor. Due to the high temperature of the waste grease, it is easy to cause the main shaft bearing temperature sensor to misjudge, thereby reporting a fault of excessive main shaft bearing temperature. Utility Model Content

[0004] The purpose of the present disclosure is to provide a temperature sensor protective cover, a temperature sensor assembly and a wind turbine generator set, which are used to ensure the accuracy of the main shaft bearing temperature sensor and improve the reliability of the detection result of the main shaft bearing temperature sensor.

[0005] According to a first aspect of the present disclosure, the present disclosure provides a temperature sensor protective cover, which is applied to a main shaft bearing temperature sensor of a wind turbine generator set, comprising:

[0006] A protective cover body has a cavity inside, an opening communicating with the cavity is formed at the bottom of the protective cover body, the opening is used for the spindle bearing temperature sensor to enter the cavity, so that the protective cover body can be arranged outside the spindle bearing temperature sensor, and the upper surface of the protective cover body is a guide surface, and the guide surface is used to guide the waste grease falling on the guide surface to slide off the protective cover body;

[0007] A fixing portion is arranged at one end of the protective cover body, and the fixing portion is used to be detachably fixed on the bearing end cover of the wind turbine generator set.

[0008] Optionally, the fixing portion includes a clamping piece, and the clamping piece is used to be clamped between a fastening nut fixing the spindle bearing temperature sensor and the bearing end cover.

[0009] Optionally, a first avoidance opening is formed on the clamping piece, and the first avoidance opening is used to avoid the tube body of the spindle bearing temperature sensor.

[0010] Optionally, one end of the protective cover body away from the fixing portion is formed as an open end, and the open end is used for allowing a wiring harness of the spindle bearing temperature sensor to pass through.

[0011] Optionally, the fixing portion is used to be fixed on the flange portion of the bearing end cover, and a second avoidance opening is formed at one end of the protective cover body close to the fixing portion, and the second avoidance opening is used to avoid the cover body of the bearing end cover.

[0012] Optionally, the protective cover body is formed as a hollow semi-cylinder.

[0013] Optionally, an oil-isolating film is attached to the guide surface.

[0014] According to a second aspect of the present disclosure, the present disclosure provides a temperature sensor assembly, comprising a spindle bearing temperature sensor and the above-mentioned temperature sensor protective cover.

[0015] According to a third aspect of the present disclosure, the present disclosure provides a wind turbine generator set, comprising a bearing end cover and the above-mentioned temperature sensor assembly.

[0016] Optionally, the wind turbine generator set further comprises an oil collecting box for collecting waste grease, wherein the oil collecting box is arranged below the main shaft bearing temperature sensor and is used to receive the waste grease that slides off the protective cover body.

[0017] Through the above technical solution, since the bottom of the protective cover body is provided with an opening and the interior of the protective cover body has a cavity, the protective cover body can be covered from top to bottom on the outside of the spindle bearing temperature sensor, so that when the waste grease discharged from the spindle bearing drips downward, it can fall on the protective cover body, thereby avoiding the waste grease from dripping onto the spindle bearing temperature sensor, causing the spindle bearing temperature sensor to misjudge, thereby improving the reliability of the detection result of the spindle bearing temperature sensor. In addition, the upper surface of the protective cover body is a guide surface, and the waste grease dripping onto the protective cover body can flow under the guidance of the guide surface and slide off the protective cover body, so as to avoid the waste grease falling onto the protective cover body and accumulating on the protective cover body. In addition, since the fixing portion can be detachably fixed to the bearing end cover, it can facilitate the installation and removal of the temperature sensor protective cover, so as to facilitate the replacement or maintenance of the temperature sensor protective cover.

[0018] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0020] Figure 1 is a schematic diagram of a three-dimensional structure of a temperature sensor protective cover provided by an exemplary embodiment of the present disclosure;

[0021] Figure 2 is a schematic diagram of a temperature sensor protective cover provided by an exemplary embodiment of the present disclosure in a use state;

[0022] Figure 3 is a partial schematic diagram of a wind turbine generator set provided by an exemplary embodiment of the present disclosure when a temperature sensor protective cover is not installed;

[0023] Figure 4 is a schematic diagram of a temperature sensor protective cover provided by an exemplary embodiment of the present disclosure in a use state (with Figure 2 different perspectives).

[0024] Description of Reference Numerals

[0025] 1-temperature sensor protective cover; 11-protective cover body; 111-cavity; 112-opening; 113-guide surface; 12-fixing part; 121-clamping piece; 122-first avoidance opening; 13-open end; 14-second avoidance opening; 2-spindle bearing temperature sensor; 21-fastening nut; 22-tube body; 23-wiring harness; 3-bearing end cover; 31-flange part; 32-cover body; 4-oil collecting box. DETAILED DESCRIPTION

[0026] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0027] It should be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it can be directly on the other element or indirectly on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0028] In the present disclosure, unless otherwise stated, the directional words used, such as "upper, lower, top, bottom", are generally defined as "upper, lower, top, bottom" of the temperature sensor protective cover in a normal use state. "Inside and outside" refer to the inside and outside of the contour of the corresponding component. In addition, the terms "first", "second", etc. are only used to distinguish descriptions and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be an internal connection between two elements or an interaction relationship between two elements; for ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0030] like Figure 1-4 As shown, the present disclosure provides a temperature sensor protective cover 1 , which is applied to a main shaft bearing temperature sensor 2 of a wind turbine generator set. The temperature sensor protective cover 1 includes a protective cover body 11 and a fixing portion 12 .

[0031] The protective cover body 11 has a cavity 111 inside, and an opening 112 communicating with the cavity 111 is provided at the bottom of the protective cover body 11. The opening 112 is used for the spindle bearing temperature sensor 2 to enter the cavity 111, so that the protective cover body 11 can be covered outside the spindle bearing temperature sensor 2. The upper surface of the protective cover body 11 is a guide surface 113, and the guide surface 113 is used to guide the waste grease falling on the guide surface 113 to slide off the protective cover body 11. The fixing part 12 is arranged at one end of the protective cover body 11, and the fixing part 12 is used to be detachably fixed on the bearing end cover 3 of the wind turbine generator set.

[0032] Since one end of the main shaft bearing temperature sensor 2 extends into the inner side of the bearing end cover 3, the installation process of the temperature sensor protective cover 1 can be as follows: the protective cover body 11 is moved from top to bottom toward the main shaft temperature sensor, so that the main shaft bearing temperature sensor 2 enters the cavity 111 inside the protective cover through the opening 112 at the bottom of the protective cover body 11, so that the protective cover body 11 can be covered on the outside of the main shaft bearing temperature sensor 2. Then the fixing part 12 is fixed on the bearing end cover 3 of the wind turbine generator set.

[0033] Through the above technical solution, since the bottom of the protective cover body 11 is provided with an opening 112, and the protective cover body 11 has a cavity 111 inside, the protective cover body 11 can be covered from top to bottom on the outside of the spindle bearing temperature sensor 2, so that when the waste grease discharged from the spindle bearing drips downward, it can fall on the protective cover body 11, thereby avoiding the waste grease from dripping on the spindle bearing temperature sensor 2, causing the spindle bearing temperature sensor 2 to misjudge, thereby improving the reliability of the detection result of the spindle bearing temperature sensor 2. In addition, the upper surface of the protective cover body 11 is a guide surface 113, and the waste grease dripping on the protective cover body 11 can flow under the guidance of the guide surface 113 and slide off the protective cover body 11, so as to avoid the waste grease falling on the protective cover body 11 from accumulating on the protective cover body 11. In addition, since the fixing portion 12 can be detachably fixed to the bearing end cover 3, it is convenient to install and disassemble the temperature sensor protective cover 1, so as to facilitate the replacement or maintenance of the temperature sensor protective cover 1.

[0034] It should be noted that the present disclosure does not limit the connection method between the fixing portion 12 and the protective cover body 11. The fixing portion 12 can be connected to the protective cover body 11 by means of, for example, bolt connection, welding, etc., or the fixing portion 12 can also be integrally formed with the protective cover body 11.

[0035] In order to realize the detachable connection between the fixing part 12 and the bearing end cover 3, in one embodiment provided in the present disclosure, the fixing part 12 is used to be clamped between the fastening nut 21 fixing the spindle bearing temperature sensor 2 and the bearing end cover 3. For example, the fixing part 12 may include a clamping piece 121, and the clamping piece 121 is used to be clamped between the fastening nut 21 fixing the spindle bearing temperature sensor 2 and the bearing end cover 3. The end of the spindle bearing temperature sensor 2 extending into the bearing end cover 3 is connected to the bearing end cover 3 through the fastening nut 21. When the temperature sensor protective cover 1 needs to be installed, the fastening nut 21 can be loosened first, and then the clamping piece 121 is placed from top to bottom between the fastening nut 21 and the bearing end cover 3, and then the fastening nut 21 is tightened, so that the clamping piece 121 can be clamped between the fastening nut 21 and the bearing end cover 3, so that the temperature sensor protective cover 1 is fixed to the bearing end cover 3.

[0036] Since the present disclosure adopts the method of clamping the clamping piece 121 between the fastening nut 21 for fixing the main shaft bearing temperature sensor 2 and the bearing end cover 3 to achieve the fixation of the temperature sensor protective cover 1, the temperature sensor protective cover 1 can be installed without changing the original structure of the wind turbine generator set.

[0037] In another embodiment provided by the present disclosure, the fixing portion 12 may include a magnetic sheet, which is adsorbed on the bearing end cover 3 by magnetic adsorption. In other embodiments, the fixing portion 12 may also include other connection methods such as adhesive patches that can be detachably fixed on the bearing end cover 3, and the present disclosure does not limit this.

[0038] See also Figure 1 and Figure 2 Optionally, a first avoidance opening 122 is formed on the clamping piece 121 , and the first avoidance opening 122 is used to avoid the tube body 22 of the spindle bearing temperature sensor 2 .

[0039] When installing the temperature sensor protective cover 1, the first avoidance opening 122 can avoid the tube body 22 of the spindle bearing temperature sensor 2, so that the clamping piece 121 can be fully inserted into the space between the fastening nut 21 and the bearing end cover 3, thereby increasing the contact area between the clamping piece 121 and the fastening nut 21 and the bearing end cover 3, and improving the clamping and fixing effect. In addition, the first avoidance opening 122 can avoid the tube body 22 of the spindle bearing temperature sensor 2, so that the tube body 22 of the spindle bearing temperature sensor 2 can completely enter the cavity 111 inside the protective cover body 11 through the first avoidance opening 122, effectively improving the isolation effect of the temperature sensor protective cover 1 on waste grease.

[0040] It is understandable that in other embodiments, the clamping piece 121 may be provided with a through hole for the tube body 22 of the spindle bearing temperature sensor 2 to pass through.

[0041] Optionally, one end of the protective cover body 11 away from the fixed part 12 is formed as an open end 13, and the open end 13 is used for allowing the wiring harness 23 of the spindle bearing temperature sensor 2 to pass through, so as to avoid the protective cover body 11 interfering with the wiring harness 23 of the spindle bearing temperature sensor 2 and affecting the routing of the spindle bearing temperature sensor 2.

[0042] In other embodiments, a harness hole for allowing the harness 23 of the spindle bearing temperature sensor 2 to pass through may also be formed on one end of the protective cover body 11 away from the fixing portion 12 .

[0043] See also Figures 1 to 4 Optionally, the fixing portion 12 is used to be fixed on the flange portion 31 of the bearing end cover 3 , and a second avoidance opening 14 is formed at one end of the protective cover body 11 close to the fixing portion 12 , and the second avoidance opening 14 is used to avoid the cover body 32 of the bearing end cover 3 .

[0044] Since the cover body 32 of the bearing end cover 3 protrudes along the axial direction of the bearing end cover 3 compared with the flange portion 31 of the bearing end cover 3, when the fixing portion 12 is connected to the flange portion 31 of the bearing end cover 3, the protective cover body 11 will mechanically interfere with the cover body 32 of the bearing end cover 3. By forming a second avoidance opening 14 at one end of the protective cover body 11 close to the fixing portion 12, the cover body 32 of the bearing end cover 3 can be avoided, so that the temperature sensor protective cover 1 can be installed on the bearing end cover 3.

[0045] Optionally, the mouth wall of the second avoidance opening 14 can be in contact with the cover body 32 of the bearing end cover 3, thereby improving the covering effect of the temperature sensor protective cover 1 on the spindle bearing temperature sensor 2, and preventing waste grease from entering the cavity 111 through the gap between the second avoidance opening 14 and the cover body 32 of the bearing end cover 3 and dripping onto the spindle bearing temperature sensor 2.

[0046] It is understandable that the present disclosure does not limit the shape of the second avoidance opening 14 , as long as the shape of the second avoidance opening 14 can achieve the avoidance effect on the cover body 32 of the bearing end cover 3 .

[0047] The shield body 11 may have any suitable shape. For example, in one embodiment of the present disclosure, the shield body 11 may be formed as a hollow semi-cylinder, so that the guide surface 113 may be formed as an arc surface to facilitate guiding the waste grease to slide off. In other embodiments, the shield body 11 may be formed as a hollow hemisphere, or the shield body 11 may be formed as an inverted V-shape with the opening 112 facing the spindle bearing temperature sensor 2.

[0048] In order to ensure the cleanliness of the temperature sensor protective cover 1, an oil-isolating film is optionally attached to the guide surface 113. The oil-isolating film can prevent the waste grease from directly contacting the guide surface 113. After the oil-isolating film is seriously contaminated by the waste grease, the oil-isolating film can be torn off and replaced with a new one. It is understandable that since the temperature of the dripping waste grease is relatively high, the oil-isolating film can be a high-temperature resistant oil-isolating film.

[0049] According to a second aspect of the present disclosure, the present disclosure provides a temperature sensor assembly, comprising a spindle bearing temperature sensor 2 and the above-mentioned temperature sensor protective cover 1.

[0050] According to a third aspect of the present disclosure, the present disclosure provides a wind turbine generator set, comprising a bearing end cover 3 and the above-mentioned main shaft bearing temperature sensor 2 assembly.

[0051] Optionally, the wind turbine generator set further includes an oil collecting box 4 for collecting waste grease. The oil collecting box 4 is arranged below the main shaft bearing temperature sensor 2 and is used to receive the waste grease that slides down from the protective cover body 11 .

[0052] The waste grease falling from the main shaft bearing falls on the guide surface 113 of the temperature sensor protective cover 1. The guide surface 113 can guide the waste grease to slide off the protective cover body 11 and fall into the oil collecting box 4 arranged below the main shaft bearing temperature sensor 2, thereby ensuring that the wind turbine generator set is not contaminated by the waste grease.

[0053] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0054] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0055] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A temperature sensor protective cover, applied to the main shaft bearing temperature sensor of a wind turbine generator set, characterized in that: include: A protective cover body has a cavity inside, an opening communicating with the cavity is formed at the bottom of the protective cover body, the opening is used for the spindle bearing temperature sensor to enter the cavity, so that the protective cover body can be arranged outside the spindle bearing temperature sensor, and the upper surface of the protective cover body is a guide surface, and the guide surface is used to guide the waste grease falling on the guide surface to slide off the protective cover body; A fixing portion is arranged at one end of the protective cover body, and the fixing portion is used to be detachably fixed on the bearing end cover of the wind turbine generator set.

2. The temperature sensor protective cover according to claim 1, characterized in that: The fixing portion includes a clamping piece, and the clamping piece is used to be clamped between a fastening nut fixing the spindle bearing temperature sensor and the bearing end cover.

3. The temperature sensor protective cover according to claim 2, characterized in that: The clamping piece is formed with a first avoidance opening, and the first avoidance opening is used to avoid the tube body of the spindle bearing temperature sensor.

4. The temperature sensor protective cover according to claim 1, characterized in that: One end of the protective cover body away from the fixing portion is formed as an open end, and the open end is used for allowing a wire harness of the spindle bearing temperature sensor to pass through.

5. The temperature sensor protective cover according to claim 1, characterized in that: The fixing portion is used to be fixed on the flange portion of the bearing end cover, and a second avoidance opening is formed at one end of the protective cover body close to the fixing portion, and the second avoidance opening is used to avoid the cover body of the bearing end cover.

6. The temperature sensor protective cover according to any one of claims 1 to 5, characterized in that: The protective cover body is formed as a hollow semi-cylinder.

7. The temperature sensor protective cover according to any one of claims 1 to 5, characterized in that: An oil-isolating film is attached to the guide surface.

8. A temperature sensor assembly, characterized in that: The invention comprises a spindle bearing temperature sensor and a temperature sensor protective cover according to any one of claims 1 to 7.

9. A wind turbine generator set, characterized in that: It comprises a bearing end cover and the temperature sensor assembly as claimed in claim 8.

10. The wind turbine generator set according to claim 9, characterized in that: The wind turbine generator set also includes an oil collecting box for collecting waste grease. The oil collecting box is arranged below the main shaft bearing temperature sensor and is used to receive the waste grease that slides off the protective cover body.

Images