Multi-path high-current bus power transmission device

Abstract

The invention relates to the technical field of power transmission of wind turbine generators, in particular to a multi-path high-current bus power transmission device applied to a high-capacity high-current wind turbine generator, which comprises a shunting component, a power transmission component and a power transmission component, wherein the shunting loop comprises a first loop, a second loop and a third loop, and the first loop, the second loop and the third loop are connected in parallel; and the connecting assembly comprises connecting bars which are respectively connected with the first loop, the second loop and the third loop. The beneficial effects of the invention are that the in-phase conductors in the conducting members are led out through the leading-out terminals and are connected in parallel, and the conducting members are further connected with the in-phase conductors in the conducting members through the connecting bars, so that electric energy can be shunted through the conductors in a plurality of loops, the conductor load is balanced, and the service life of the conducting members is prolonged. When a certain loop joint has a reliability problem, the current is shunted to other loops through the connecting bar so as to prevent accidents.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine power transmission, in particular to a multi-channel high-current bus power transmission device. Background Art

[0002] In the field of wind power, when facing the transmission needs of large-capacity units, traditional cable or busbar transmission methods are generally used. Although this method can meet basic transmission needs, as the capacity of wind turbines increases, the current of the generator sets also increases, and the number of wires required for the generator sets is also gradually increasing.

[0003] The main problems existing in the prior art include the unbalanced load problem caused by the reliability of the joint connection when the cable transmits high current, which may lead to reduced transmission efficiency and overheating of the equipment. At the same time, the installation structure of the prior art is complex and requires a long production and installation cycle, which not only affects the progress of the project, but also increases the difficulty and cost of construction. In addition, the existing busbar technology usually meets the existing current carrying capacity requirements by increasing the conductor cross-section under high current conditions. As the conductor cross-section increases, the amount of conductor material used increases, the cost also increases, and the efficiency of material use becomes lower and lower, which is not conducive to cost control and cost-effectiveness improvement; at the same time, the product weight also increases, which is not conducive to the laying and installation of the product, and increases the installation cost. The existing busbar technology lacks effective protection measures in the face of harsh environmental conditions, such as continuous water flow, which may lead to reduced insulation performance and equipment damage. Therefore, a new multi-channel busbar transmission structure is needed to solve these problems, improve transmission efficiency, reduce costs, and enhance the reliability and safety of the system. Summary of the invention

[0004] In view of the above existing technical problems, the present invention is proposed.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a multi-channel high-current bus transmission device, comprising a shunt component, the shunt component comprising a shunt circuit; wherein the shunt circuit comprises a first circuit, a second circuit and a third circuit, and the first circuit, the second circuit and the third circuit are connected in parallel; a connecting component, the connecting component comprises a connecting bar respectively connecting the first circuit, the second circuit and the third circuit.

[0006] As a preferred solution of the multi-channel high-current busbar power transmission device of the present invention, wherein: the first loop includes a conductive member, and the conductive member includes a first conductor, a second conductor and a third conductor.

[0007] As a preferred solution of the multi-channel high-current bus transmission device of the present invention, wherein: the connecting bar includes a first connecting bar, a second connecting bar and a third connecting bar, the first connecting bar connects the first conductor of each circuit, the second connecting bar connects the second conductor of each circuit, and the third connecting bar connects the third conductor of each circuit.

[0008] As a preferred solution of the multi-channel high-current busbar power transmission device of the present invention, a measuring component is arranged outside the conducting component, and the measuring component includes a resistor, a connecting conductor and a display.

[0009] As a preferred solution of the multi-channel high-current bus transmission device of the present invention, wherein: the resistor is arranged on the outer wall of the conductive member, the connecting conductor connects the connecting row and the resistor, and the resistor is externally connected to a display.

[0010] As a preferred solution of the multi-channel high-current busbar power transmission device of the present invention, wherein: the two ends of the conductive member are respectively provided with joints, the outer wall of the joint is provided with lead terminals, the lead terminals are connected to the connecting bar, and the lead terminals can also be provided on the outer wall of the conductive member.

[0011] As a preferred solution of the multi-channel high-current bus transmission device of the present invention, the first conductor, the second conductor and the third conductor are fixed by a bus duct.

[0012] As a preferred solution of the multi-channel high-current busbar power transmission device of the present invention, the outer wall of the conductive member is provided with an insulating phase-isolating ring, the outer wall of the insulating phase-isolating ring is provided with a first boss and a second boss, and a first water guide groove is also opened inside the insulating phase-isolating ring.

[0013] As a preferred solution of the multi-channel high-current busbar power transmission device of the present invention, the outer wall of the conductive member is also provided with a protective sleeve, the outer wall of the protective sleeve is provided with a card slot, and the protective sleeve is also provided with a second water guide groove.

[0014] As a preferred solution of the multi-channel high-current busbar power transmission device of the present invention, wherein: the conductive member is axially provided with a plurality of fixed support plates, and the plurality of fixed support plates are respectively fixedly connected to the plurality of busbar ducts.

[0015] The beneficial effects of the multi-channel high-current bus transmission device of the present invention are: the conductors inside the conductive parts are connected through the bus duct, and the conductive parts are further connected to the conductors therein through the connecting bars, so that the currents in multiple circuits can be shunted to reduce the conductor load. When one of the circuits is overloaded, the current is shunted to other circuits through the connecting bars to prevent the current from being overloaded. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is an overall schematic diagram of the multi-channel high-current bus transmission device in the present invention.

[0018] Figure 2 This is a circuit connection comparison diagram of the multi-channel high-current bus transmission device in the present invention.

[0019] Figure 3 This is a bottom view of the multi-channel high-current bus transmission device in the present invention.

[0020] Figure 4 This is an enlarged view of point A of the multi-channel high-current bus transmission device in the present invention.

[0021] Figure 5 This is an enlarged view of point B of the multi-channel high-current bus transmission device in the present invention.

[0022] Figure 6 This is an enlarged view of point C of the multi-channel high-current bus transmission device in the present invention.

[0023] Figure 7 This is a detailed diagram of the joints of the multi-channel high-current busbar power transmission device in the present invention.

[0024] Figure 8 This is a detailed diagram of the insulating phase isolation ring of the multi-channel high-current bus transmission device in the present invention.

[0025] Fig. 9 This is a detailed diagram of the protective cover of the multi-channel high-current busbar power transmission device in the present invention. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1, reference Figure 1 to Figure 4 , which is the first embodiment of the present invention, and provides a multi-channel high-current bus transmission device, including a shunt component 100, and the shunt component 100 includes a shunt circuit 101;

[0030] The shunt circuit 101 includes a first circuit 101a, a second circuit 101b and a third circuit 101c, and the first circuit 101a, the second circuit 101b and the third circuit 101c are connected in parallel;

[0031] Preferably, the present embodiment mainly shows a double circuit, i.e., including a first circuit 101a and a second circuit 101b or a three-circuit circuit, i.e., including a first circuit 101a, a second circuit 101b and a third circuit 101c. In the case of the first circuit 101a, the second circuit 101b and the third circuit 101c, circuits can be added in sequence according to different unit capacity requirements and circuit load conditions. Each group of circuits consists of three phases, i.e., the first conductor L1, the second conductor L2 and the third conductor L3 together form a complete circuit; each group of circuits is installed in parallel on the same bracket, and each group of circuits is fixed at two points at the upper end.

[0032] The connection assembly 200 includes a connection bar 200A respectively connected to the first circuit 101a, the second circuit 101b and the third circuit 101c. The connection assembly 200 can be set at one of the upper and lower joint positions, or at one joint position or the middle position of the busbar.

[0033] Preferably, the connecting bar 200A is provided with multiple blocks in the three circuits of this embodiment, referring to Figure 2 According to the principle of this embodiment, the number of connecting bars 200A is selected according to the number of conducting members L in each circuit. One connecting bar 200A can connect one of the conductors in multiple circuits. The current carrying capacity of the connecting bar 200A should be consistent with the conductor in the conducting member L in theory.

[0034] However, during the actual installation process, since the connection bars 200A cannot be staggered in space, two connection bars 200A may be required to connect the three conductors. However, in principle and in actual use, the functions of multiple connection bars 200A are the same, which are to connect multiple circuits.

[0035] Preferably, in this embodiment, the first connecting bar 201 includes a first section connecting bar 201a connecting the first loop 101a and the second loop 101b and a second section connecting bar 201b connecting the second loop 101b and the third loop 101c.

[0036] The first loop 101 a includes a conductive element L, and the conductive element L includes a first conductor L1 , a second conductor L2 , and a third conductor L3 .

[0037] Preferably, all conductors in the first loop 101a are summarized as a conductive member L in this article. In this embodiment, the conductive member L includes three conductors, namely a first conductor L1, a second conductor L2 and a third conductor L3, wherein the first conductor L1, the second conductor L2 and the third conductor L3 form a three-phase loop.

[0038] The connection bar 200A includes a first connection bar 201 , a second connection bar 202 and a third connection bar 203 . The first connection bar 201 connects the first conductor L1 of each loop, the second connection bar 202 connects the second conductor L2 of each loop, and the third connection bar 203 connects the third conductor L3 of each loop.

[0039] Further, the first connection bar 201 connects the first conductor L1 of the first loop 101a, the second loop 101b and the third loop 101c; the second connection bar 202 connects the second conductor L2 of the first loop 101a, the second loop 101b and the third loop 101c; the third connection bar 203 connects the third conductor L3 of the first loop 101a, the second loop 101b and the third loop 101c;

[0040] In summary, multiple connecting bars 200A are connected to each circuit according to the number of circuits. When any phase in a single circuit is overloaded, that is, the current or load is unevenly distributed in each phase or each circuit, for example, when the second circuit 101b in this embodiment is overloaded, that is, the current in the first conductor L1, the second conductor L2 and the third conductor L3 in the second circuit 101b formed by the three-phase conductors connected to each connecting bar 200A is uneven compared with the current between the first circuit 101a and the third circuit 101c, the current can be redistributed through the connecting bar 200A to ensure the normal operation of this section of the bus.

[0041] Example 2, reference Figure 3 to Figure 9 , which is the second embodiment of the present invention, and further provides a multi-channel high current busbar power transmission device. The conductive part L is provided with a measuring part 204, and the measuring part 204 includes a resistor 204a, a connecting conductor 204c and a display 204b.

[0042] The resistor 204a is disposed on the outer wall of the conductive member L, the connecting conductor 204c connects the connecting row 200A and the resistor 204a, and the resistor 204a is externally connected to a display 204b.

[0043] Connectors 205 are provided at both ends of the conductive member L, and lead terminals 205a are provided on the outer wall of the connector 205. The lead terminals 205a are connected to the connecting row 200A. The lead terminals 205a can also be provided on the outer wall of the conductive member L, that is, the lead terminals 205a can be directly connected to any conductor in the conductive member L, that is, the lead terminals 205a play the role of connecting the conductors of each phase in each circuit, and their positions are not limited.

[0044] Preferably, the measuring element 204 is arranged in the conductive element L. The specific arrangement method is to match the number of measuring elements 204 according to the number of conductors of the conductive element L, and respectively arrange the resistor 204a of the measuring element 204 in each conductive element L in multiple loops, that is, the ring-shaped resistor 204a is respectively arranged in the first conductor L1, the second conductor L2 and the third conductor L3 in each loop.

[0045] Furthermore, the lead-out terminal 205a may also include a second lead-out terminal 205c that is coplanar and symmetrically arranged with the lead-out terminal 205a. The end face of the lead-out terminal 205a is provided with a matching hole 205b that passes through the lead-out terminal 205a and the second lead-out terminal 205c and matches with the connector 205. The design of the second lead-out terminal 205c can connect more connection rows 200A.

[0046] When the temperature of a conductor in a certain loop changes, the reading displayed on the display 204b is abnormal, and the reading on the display 204b can be used to determine which conductor is unloaded at this time.

[0047] In summary, resistor 204a is a thermistor. When one or more of the three circuits are overloaded, the current in a certain circuit increases, causing the temperature of connecting bar 200A to rise, further causing damage to the conductor joint. In the prior art, when external detection is performed, such as detection by an ammeter or a multimeter, it can only be found that the overall circuit and the total circuit of the three circuits are overloaded, and it cannot be specifically found in a certain conductor in a certain circuit. According to the above setting, the reading of display 204b can be used to determine which specific conductor is overloaded at this time, and then the conductor can be repaired in a targeted manner, which greatly reduces the working time of maintenance personnel.

[0048] The first conductor L1 , the second conductor L2 , and the third conductor L3 are fixed by the bus duct 206 .

[0049] Preferably, the bus duct 206 is provided with through holes cooperating with the first conductor L1 , the second conductor L2 and the third conductor L3 on one axial side of the conductor for installing the first conductor L1 , the second conductor L2 and the third conductor L3 .

[0050] An insulating phase-isolating ring 207 is disposed on the outer wall of the conducting member L. A first boss 207 a and a second boss 207 b are disposed on the outer wall of the insulating phase-isolating ring 207 . A first water-conducting groove 207 c is also provided inside the insulating phase-isolating ring 207 .

[0051] Preferably, the insulating phase-isolating ring 207 is located inside the bus duct 206, and a first boss 207a and a second boss 207b are symmetrically arranged on the insulating phase-isolating ring 207, wherein the first boss 207a and the second boss 207b are both arc-shaped and the radius of the first boss 207a is larger than that of the second boss 207b, which can more effectively block the continuous water flow and further increase the water drainage measures on the surface of the pipe body; the second boss 207b is close to the end of the insulating phase-isolating ring 207; and a rivet hole 207d is opened inside the insulating phase-isolating ring 207 for easy installation.

[0052] Preferably, the outer wall of the bus duct 206 installed on the same horizontal plane as the insulating phase-isolating ring 207 is also provided with a hardware base 206b and a hardware clamp arranged on the front side of the hardware base 206b. The hardware base 206b is fixedly connected to the fixed support plate 208, and a tower column 208a is also provided on the fixed support plate 208 installed on the same horizontal plane as the insulating phase-isolating ring 207.

[0053] The outer wall of the conductive member L is further provided with a protective sleeve 209, the outer wall of the protective sleeve 209 is provided with a clamping groove 209a, a second water guide groove 209b is further provided in the protective sleeve 209, and the outer wall of the protective sleeve 209 is provided with an installation groove 209a.

[0054] Preferably, the outer wall of the protective cover 209 is connected to the bus duct 206, and the outside of the bus duct 206 arranged at the same horizontal plane as the protective cover 209 is also provided with an insulating clamp 206c and an insulating base 206d arranged at the bottom of the insulating clamp 206c and fixedly connected to the fixed support plate 208 arranged at the same horizontal plane as the protective cover 209, wherein the fixed support plate 208 arranged at the same horizontal plane as the protective cover 209 is provided with an elastic support plate 208c in the axial direction of the conductive member L, and an adjustment seat 208b is fixed with bolts on the outer wall of the elastic support plate 208c, and a plurality of tower columns 208a are arranged on the adjustment seat 208b.

[0055] The conductive member L is axially provided with a plurality of fixed support plates 208 , and the plurality of fixed support plates 208 are respectively fixedly connected to the plurality of bus ducts 206 .

[0056] In summary, when the overall circuit is overloaded, based on the heating of a certain conductor at this time, which affects the resistance 204a of the display 204b, the reading of the display 204b can be used to determine which specific conductor is overloaded at this time, and then the conductor can be repaired in a targeted manner, greatly reducing the operation time of maintenance personnel.

[0057] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0058] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0059] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A multi-channel high-current bus transmission device, Features: include, A flow splitter assembly (100) comprises a flow splitter circuit (101); The shunt circuit (101) comprises a first circuit (101a), a second circuit (101b) and a third circuit (101c), and the first circuit (101a), the second circuit (101b) and the third circuit (101c) are connected in parallel; The connection assembly (200) comprises a connection bar (200A) respectively connecting the first circuit (101a), the second circuit (101b) and the third circuit (101c).

2. The multi-channel high-current bus transmission device according to claim 1, Features: The first loop (101a) includes a conductive element (L), and the conductive element (L) includes a first conductor (L1), a second conductor (L2), and a third conductor (L3).

3. The multi-channel high-current bus transmission device as claimed in claim 2, Features: The connection bar (200A) comprises a first connection bar (201), a second connection bar (202) and a third connection bar (203), wherein the first connection bar (201) connects the first conductor (L1) of each loop, the second connection bar (202) connects the second conductor (L2) of each loop, and the third connection bar (203) connects the third conductor (L3) of each loop.

4. The multi-channel high-current bus transmission device as claimed in claim 3, Features: A measuring component (204) is arranged outside the conducting component (L), and the measuring component (204) comprises a resistor (204a), a connecting conductor (204c) and a display (204b).

5. The multi-channel high-current bus transmission device as claimed in claim 4, Features: The resistor (204a) is arranged on the outer wall of the conductive member (L), the connecting conductor (204c) connects the connecting row (200A) and the resistor (204a), and the resistor (204a) is externally connected to a display (204b).

6. The multi-channel high-current bus transmission device according to claim 5, Features: The two ends of the conductive member (L) are respectively provided with connectors (205), and the outer wall of the connector (205) is provided with lead terminals (205a), and the lead terminals (205a) are connected to the connection row (200A). The lead terminals (205a) can also be provided on the outer wall of the conductive member (L).

7. The multi-channel high-current bus transmission device according to claim 6, Features: The first conductor (L1), the second conductor (L2) and the third conductor (L3) are fixed via a bus duct (206).

8. The multi-channel high-current bus transmission device according to claim 7, Features: The outer wall of the conducting member (L) is provided with an insulating phase-isolating ring (207), the outer wall of the insulating phase-isolating ring (207) is provided with a first boss (207a) and a second boss (207b), and a first water guide groove (207c) is also provided inside the insulating phase-isolating ring (207).

9. The multi-channel high-current bus transmission device according to claim 8, Features: The outer wall of the conductive member (L) is also provided with a protective sleeve (209), the outer wall of the protective sleeve (209) is provided with a slot (209a), and the protective sleeve (209) is also provided with a second water guide groove (209b).

10. The multi-channel high-current bus transmission device according to claim 9, Features: The conductive member (L) is axially provided with a plurality of fixed support plates (208), and the plurality of fixed support plates (208) are respectively fixedly connected to the plurality of bus ducts (206).

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