Connector

Abstract

The utility model relates to a connector. Comprising a grounding assembly which is used for being connected with a lightning protection ground bar; the first connecting pipe is arranged outside a steel strand of the optical cable in a sleeving mode and connected with the steel strand, and the second connecting pipe is connected with the grounding assembly; and the mounting piece is connected between the first connecting pipe and the second connecting pipe. The first connecting pipe is sleeved outside the steel strand of the optical cable and is connected with the steel strand. On one hand, it can be ensured that the steel strand is completely hidden in the first connecting pipe, bad discharge caused by the fact that the exposed part of the steel strand makes contact with the wind generating set under the thunder and lightning condition is avoided, and therefore the use safety of the connector is improved. And on the other hand, the steel strand can be directly inserted into the first connecting pipe, so that the stability and reliability of the connection of the steel strand can be ensured, the situation that the steel strand cannot be grounded through the connector and the grounding assembly due to virtual connection is avoided, the steel strand of the optical cable can be effectively grounded, and the use safety of the connector is further improved.

Description

Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to a connector. Background Art

[0002] Wind energy is a clean renewable energy source that is safe, clean, abundant and inexhaustible. It is a permanent and abundant local resource that can provide us with a long-term and stable energy supply. Wind power generation is one of the most mature, large-scale and commercially developed power generation methods in the field of new energy. The development of wind power is of great significance to ensuring energy security, adjusting energy structure, reducing environmental pollution and achieving sustainable development.

[0003] Wind turbines can effectively convert wind energy into electrical energy. Generally, in order to prevent lightning from damaging wind turbines, it is usually necessary to provide lightning protection and grounding to the optical cable at the foundation of the wind turbine. In actual operation, the steel strands of the optical cable are connected to the ground wire through a connector, and then the ground wire is connected to the lightning protection ground bar. However, with traditional connectors, it is easy for the steel strands of the optical cable to come into contact with the wind turbine and cause electric shock, thus affecting the safety of the connector. Summary of the invention

[0004] A technical problem solved by the present application is how to improve the safety of connector use.

[0005] A connector, comprising:

[0006] A grounding component, the grounding component is used to connect to the lightning protection ground bar;

[0007] a first connecting tube, the first connecting tube being sleeved outside the steel strand of the optical cable and connected to the steel strand,

[0008] A second connecting pipe, the second connecting pipe is connected to the grounding assembly; and

[0009] A mounting member is connected between the first connecting pipe and the second connecting pipe.

[0010] In one embodiment, the first connecting tube is used for crimping connection with the steel strand.

[0011] In one embodiment, the second connecting pipe is sleeved outside the grounding component and connected to the grounding component.

[0012] In one embodiment, the second connecting tube is crimped and connected to the grounding assembly.

[0013] In one embodiment, the outer diameter of the first connecting tube is smaller than the outer diameter of the second connecting tube, and the inner diameter of the first connecting tube is smaller than the inner diameter of the second connecting tube.

[0014] In one embodiment, the first connecting tube and the second connecting tube are coaxially arranged.

[0015] In one embodiment, the first connecting pipe, the second connecting pipe and the mounting member are all made of copper.

[0016] In one embodiment, the mounting member is a plate-shaped structure, the mounting member is disposed at an end portion of the second connecting tube, and the first connecting tube is protrudingly disposed on the mounting member.

[0017] In one embodiment, the mounting member is connected to both the first connecting pipe and the second connecting pipe by welding.

[0018] In one embodiment, the grounding assembly includes a grounding wire and a grounding head, the grounding wire is connected between the second connecting pipe and the grounding head, and the grounding head is provided with a fixing hole for connecting to a lightning protection ground bar.

[0019] A technical effect of an embodiment of the present application is: in view of the fact that the first connecting tube is sleeved outside the steel strands of the optical cable and connected to the steel strands. On the one hand, it can ensure that the steel strands are completely hidden in the first connecting tube, avoiding the exposed part of the steel strands from contacting the wind turbine generator set and causing adverse discharge in the event of lightning, thereby improving the safety of the connector. On the other hand, the steel strands can be directly inserted into the first connecting tube, thereby improving the convenience of connector operation, and also ensuring the stability and reliability of the steel strand connection, avoiding the inability of the steel strands to be grounded through the connector and the grounding component due to virtual connection, ensuring that the steel strands of the optical cable can be effectively grounded, and further improving the safety of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a connector provided in an embodiment.

[0021] Figure 2 for Figure 1 Schematic diagram of the planar structure of the connector shown.

[0022] Reference numerals: connector 10 , cable 20 , first connecting tube 100 , second connecting tube 200 , mounting member 300 , grounding assembly 400 , grounding wire 410 , grounding head 420 , fixing hole 421 . DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0024] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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 the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0027] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0029] See also Figure 1 and Figure 2 A connector 10 provided in one embodiment of the present application is used to connect the steel strands of the optical cable 20 on the wind turbine generator set, and the connector 10 is connected to the lightning protection ground bar, that is, the steel strands of the optical cable 20 are connected to the lightning protection ground bar through the connector 10, thereby protecting the wind turbine generator set from lightning strikes. The connector 10 includes a first connecting tube 100, a second connecting tube 200, a mounting member 300 and a grounding assembly 400, and the steel strands of the optical cable 20, the first connecting tube 100, the mounting member 300, the second connecting tube 200, the grounding assembly 400 and the lightning protection ground bar are connected in sequence.

[0030] See also Figure 1 and Figure 2In some embodiments, the first connecting tube 100 can be made of copper material, for example, the first connecting tube 100 can be made of GT-4 copper connecting tube. Of course, the first connecting tube 100 can also be made of other conductive metal or alloy materials. During the connection process between the first connecting tube 100 and the steel strands of the optical cable 20, the steel strands of the optical cable 20 can be inserted into the cavity of the first connecting tube 100 from the end of the first connecting tube 100 away from the second connecting tube 200, that is, the first connecting tube 100 is completely sleeved on the steel strands of the optical cable 20, so that the steel strands of the optical cable 20 are all hidden in the first connecting tube 100, thereby forming a good protection effect on the steel strands of the optical cable 20. The first connecting tube 100 and the steel strands of the optical cable 20 can be connected by crimping. For example, after the steel strands of the optical cable 20 are inserted into the first connecting tube 100, the first connecting tube 100 can be flattened to a certain extent by using tools such as clamps, so that the steel strands of the optical cable 20 are clamped in the tube cavity of the first connecting tube 100. It can be understood that in order to improve the connection strength between the steel strands of the optical cable 20 and the first connecting tube 100, at least two positions on the first connecting tube 100 arranged along the axis of the first connecting tube 100 can be flattened. Of course, after the entire connector 10 is installed, an insulating layer such as tape can be covered on the first connecting tube 100 to prevent the first connector 10 from contacting other parts of the wind turbine generator set and causing bad discharge under the action of lightning.

[0031] See also Figure 1 and Figure 2 In some embodiments, the second connecting tube 200 can be made of copper material, for example, the second connecting tube 200 can be made of GT-6 copper connecting tube. Of course, the second connecting tube 200 can also be made of other conductive metal or alloy materials. During the connection process between the second connecting tube 200 and the grounding assembly 400, the grounding assembly 400 can be inserted into the tube cavity of the second connecting tube 200 from the end of the second connecting tube 200 away from the first connecting tube 100, that is, the second connecting tube 200 is completely sleeved on the grounding assembly 400, thereby forming a good protection effect for the grounding assembly 400. The second connecting tube 200 and the grounding assembly 400 can be connected by crimping. For example, after the grounding assembly 400 is inserted into the second connecting tube 200, a tool such as a clamp can be used to flatten the second connecting tube 200 to a certain extent, so that the grounding assembly 400 is clamped in the tube cavity of the second connecting tube 200. It can be understood that in order to improve the connection strength between the grounding assembly 400 and the second connecting pipe 200, at least two positions on the second connecting pipe 200 arranged along the axis of the second connecting pipe 200 can be flattened. Of course, after the entire connector 10 is installed, an insulating layer such as tape can be covered on the second connecting pipe 200 to prevent the second connector 10 from contacting other parts of the wind turbine generator set and causing undesirable discharge under the action of lightning.

[0032] See also Figure 1 and Figure 2 In some embodiments, the mounting member 300 is connected between the first connecting tube 100 and the second connecting tube 200. The mounting member 300 may be a plate-like structure, for example, the mounting member 300 may be a roughly circular plate-like structure. The outer diameter of the mounting member 300 may be equal to the outer diameter of the second connecting tube 200. The mounting member 300 is disposed at the end of the second connecting tube 200, so that the mounting member 300 can block the end opening of the tube cavity on the second connecting tube 200. Therefore, when the second connecting tube 200 is connected with the mounting member 300, the tube cavity with both ends open will be converted into a tube cavity with one end closed and a certain opening, so that the grounding component 400 can be inserted into the tube cavity from the end of the tube cavity with an opening. The thickness of the mounting member 300 may be about 2 mm, and the diameter of the mounting member 300 may be about 8 mm. The mounting member 300 can be coaxially arranged with the second connecting tube 200, so that the outer peripheral surfaces of the mounting member 300 and the second connecting tube 200 can be flush with each other, thereby improving the overall consistency of the appearance of the entire connector 10, and facilitating the attachment of an insulating layer to the mounting member 300 and the second connecting tube 200. The mounting member 300 can also be made of copper material, so that the mounting member 300 is actually a circular copper plate. The mounting member 300 can also be covered with an insulating layer to prevent the mounting member 300 from contacting other parts of the wind turbine generator set and causing undesirable discharge under the action of lightning.

[0033] One end of the first connecting tube 100 is fixedly connected to the mounting member 300, so that the mounting member 300 can block the end opening of the tube cavity on the first connecting tube 100. Therefore, when the first connecting tube 100 is fixed on the mounting member 300, the tube cavity with both ends open will be converted into a tube cavity with one end closed and one end open, so that the steel strands of the optical cable 20 can be inserted into the tube cavity from the end of the tube cavity with an opening. The first connecting tube 100, the second connecting tube 200 and the mounting member 300 can all be coaxially arranged, and their coaxiality can be about 0.3mm. The mounting member 300 can be fixedly connected to the second connecting tube 200 by welding, and the first connecting tube 100 can also be fixedly connected to the mounting member 300 by welding. The inner diameter of the first connecting tube 100 can be smaller than the inner diameter of the second connecting tube 200, and the outer diameter of the first connecting tube 100 can also be smaller than the outer diameter of the second connecting tube 200.

[0034] See also Figure 1 and Figure 2In some embodiments, the mounting member 300 can be formed by cutting or stamping. For the welding process between the mounting member 300 and the second connecting pipe 200, and the first connecting pipe 100 and the mounting member 300, a brass brazing process can be used, that is, a silicon brass welding wire with a diameter of 3 mm and a 301 flux can be used for welding. For example, first, 20 mm on each side of the weld can be decontaminated and polished with a wire brush to reveal the metallic luster, and then a welding gun can be used for preheating, that is, a welding gun is used to preheat the weld position, and the preheating temperature can be 500°C to 600°C. In the specific welding operation process, the mounting member 300 can be welded to the end of the second connecting pipe 200, and then the first connecting pipe 100 is welded to the mounting member 300. During the welding process, the temperature change of the welding area must be closely monitored to prevent it from being too high or too low. Generally, dark red is appropriate for visual inspection, and the temperature at this time is between 550°C and 600°C. The welding nozzle needs to swing smoothly and keep moving forward at a constant speed; the outline of the flame should always cover the molten pool to avoid contact with the air, to ensure that the brass solder liquid spreads naturally and smoothly to both sides of the weld and penetrates into the gap; after welding, you can use a small hammer to knock on the weld joint in the weld to make the structure of the weld joint dense and improve its strength and toughness; of course, you can also do a density performance test on the weld joint to further improve the welding effect.

[0035] See also Figure 1 and Figure 2 In some embodiments, the grounding assembly 400 includes a grounding wire 410 and a grounding head 420. The grounding wire 410 may be a 10 mm² yellow-green grounding wire 410 or the like. The grounding wire 410 is inserted into the tube cavity of the second connecting tube 200, and the grounding head 420 is arranged on the end of the grounding wire 410 away from the second connecting tube 200. The grounding head 420 is used to connect with the lightning protection ground bar. For example, a fixing hole 421 is provided on the grounding head 420, and a bolt may be passed through the fixing hole 421, so that the grounding head 420 can be fixedly connected with the lightning protection ground bar by bolt connection.

[0036] If a bolt wire clamp is used to connect the steel strands of the optical cable 20 and the ground wire 410, on the one hand, the bolt wire clamp does not completely cover the steel strands of the optical cable 20, so that part of the steel strands will be exposed outside the bolt wire clamp, and the exposed part of the steel strands will contact the wind turbine generator set and cause bad discharge in the case of lightning, which is easy to cause the optical cable 20 to burn, the wind turbine generator set to be damaged by lightning and even cause fire, and may also cause casualties, thereby affecting the safety of the connector 10 represented by the bolt wire clamp. On the other hand, the steel strands are first pre-fixed on the bolt wire clamp, and it is ensured that the steel strands are not completely fixed, and then the ground wire 410 is pre-fixed on the bolt wire clamp, and finally the steel strands and the ground wire 410 are fastened to the bolt wire clamp, which makes the operation inconvenient. At the same time, it is also easy to cause the ground wire 410 to be unable to form an effective connection with the bolt wire clamp, that is, the ground wire 410 and the bolt wire clamp form a virtual connection, and then cause bad discharge due to the inability to effectively ground. On the other hand, the grounding wire 410 is easily fixed on the bolts of the first-layer platform support column on the wind turbine generator set, resulting in that the grounding wire 410 is actually not grounded, and also causes bad discharge due to the inability to effectively ground.

[0037] See also Figure 1 and Figure 2 , and for the connector 10 in the above embodiment, on the one hand, since the steel strands of the optical cable 20 are directly inserted into the tube cavity of the first connecting tube 100, it can be ensured that the steel strands are completely hidden in the first connecting tube 100, avoiding the exposed part of the steel strands from contacting the wind turbine generator set and causing bad discharge in the case of lightning, thereby improving the safety of the connector 10. On the other hand, the steel strands can be directly inserted into the first connecting tube 100, and the grounding wire 410 can be directly inserted into the second connecting tube 200. The insertion of the steel strands and the grounding wire 410 does not interfere with each other and can be operated independently, thereby improving the convenience of the operation of the connector 10, and can also ensure the stability and reliability of the connection between the steel strands and the grounding wire 410, avoiding bad discharge caused by virtual connection, and further improving the safety of the connector 10. On the other hand, by providing a grounding head 420 on the grounding wire 410, the bolts of the first-layer platform support column on the wind turbine generator set will not be able to pass through the fixing hole 421 of the grounding head 420, so it can effectively avoid connecting the grounding wire 410 to the bolts of the first-layer platform support column on the wind turbine generator set through the grounding head 420, avoid virtual grounding, ensure that the grounding head 420 is connected to the lightning protection ground bar to achieve effective grounding, and further improve the safety of the use of the connector 10.

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A connector, characterized in that: include: A grounding component, the grounding component is used to connect to the lightning protection ground bar; a first connecting tube, the first connecting tube being sleeved outside the steel strand of the optical cable and connected to the steel strand, A second connecting pipe, the second connecting pipe is connected to the grounding assembly; and A mounting member is connected between the first connecting pipe and the second connecting pipe.

2. The connector according to claim 1, characterized in that: The first connecting pipe is used for crimping connection with the steel strand.

3. The connector according to claim 1, characterized in that: The second connecting pipe is sleeved outside the grounding assembly and connected to the grounding assembly.

4. The connector according to claim 3, characterized in that: The second connecting pipe is crimped and connected to the grounding assembly.

5. The connector according to claim 1, characterized in that: The outer diameter of the first connecting pipe is smaller than the outer diameter of the second connecting pipe, and the inner diameter of the first connecting pipe is smaller than the inner diameter of the second connecting pipe.

6. The connector according to claim 1, characterized in that: The first connecting pipe and the second connecting pipe are coaxially arranged.

7. The connector according to claim 1, characterized in that: The first connecting pipe, the second connecting pipe and the mounting piece are all made of copper.

8. The connector according to claim 1, characterized in that: The mounting member is a plate-shaped structure, and the mounting member is arranged at the end of the second connecting pipe, and the first connecting pipe is protrudingly arranged on the mounting member.

9. The connector according to claim 1, characterized in that: The mounting member is connected to both the first connecting pipe and the second connecting pipe by welding.

10. The connector according to claim 1, characterized in that The grounding assembly comprises a grounding wire and a grounding head. The grounding wire is connected between the second connecting pipe and the grounding head. The grounding head is provided with a fixing hole for connecting with a lightning protection ground bar.

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