A shaft seal type main pump motor junction box lead copper bar structure and junction box

Abstract

The application discloses a shaft seal type main pump motor junction box lead copper bar structure and a junction box, relates to the technical field of lead copper bars, and comprises a lead copper bar body; along a first direction, a mounting fixed interface is arranged on the lead copper bar body; the mounting fixed interface is used for being connected with a post insulator; along a second direction, a mounting interface is arranged on the lead copper bar body; the mounting interface is used for being connected with an interline insulator; the first direction is perpendicular to the second direction. The lead copper bar body is fixedly mounted on the post insulator through the mounting fixed interface, and the interline insulator is connected through the mounting interface, so that the first direction and the second direction of the plurality of lead copper bar bodies are fixed respectively, thereby being parallelly combined to form a stable whole, the anti-seismic performance is significantly improved, the cable shaking is effectively inhibited, the joint loosening problem caused by the cable shaking is avoided, and the safety and reliability of electrical system operation are further improved.

Description

Technical Field

[0001] This invention relates to the field of copper busbar technology, and in particular to a copper busbar structure for a shaft-sealed main pump motor junction box. Background Technology

[0002] Traditional motor junction box lead copper busbars are made by drilling holes in copper plates of a certain thickness, and some are processed into an "L" shape. The upper part has a lead cable installation interface, and the lower part has a power supply cable installation interface. It is fixed to the back plate of the junction box through the interfaces on both sides in the middle with insulators. The structure is simple and the front and rear dimensions have good fixation effect, but the vertical dimension constraint is weak and there is no horizontal dimension constraint, resulting in insufficient seismic performance.

[0003] Therefore, there is an urgent need for a structurally stable and earthquake-resistant copper busbar structure. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a shaft-sealed main pump motor junction box lead copper busbar structure with sufficient mechanical strength and seismic resistance.

[0005] To achieve the above objectives, the present invention provides the following solution: This invention provides a lead copper busbar structure for a shaft-sealed main pump motor junction box, including a lead copper busbar body; Along the first direction, the lead copper busbar body is provided with an installation and fixing interface; the installation and fixing interface is used to connect with the post insulator; Along the second direction, the lead copper busbar body is provided with an installation interface; the installation interface is used to connect with the inter-line insulator; The first direction is perpendicular to the second direction.

[0006] Optionally, along a third direction, the lead copper bus body includes a winding connection port and a power connection port arranged opposite to each other; the winding connection port is used to electrically connect to the motor stator winding lead, and the power connection port is used to electrically connect to the power supply line; the third direction is perpendicular to both the first direction and the second direction.

[0007] Optionally, the power connection port includes a front connection port and a rear connection port, which are arranged side by side along the first direction.

[0008] Optionally, along the second direction, at least one arc-blocking plate is provided between adjacent copper busbar bodies.

[0009] Optionally, the surface of the arc-blocking plate is coated with rust-proof and insulating paint.

[0010] Optionally, the arc-blocking plate is made of thin steel plate.

[0011] Optionally, the copper busbar body is an integral structure.

[0012] The present invention also discloses a junction box comprising the aforementioned shaft-sealed main pump motor junction box lead copper busbar structure.

[0013] The present invention achieves the following technical effects compared to the prior art: When using the shaft-sealed main pump motor junction box lead copper busbar structure provided by this invention, the lead copper busbar body is fixedly installed on the post insulator through the installation fixing interface. By adjusting the size and position of the interface area, it can adapt to insulators of different specifications and types, so that the junction box size for installing the lead copper busbar body can be designed to be more compact and can meet the needs of projects with multiple voltage levels. By connecting the line insulators through the installation interface, the first and second directions of multiple lead copper busbar bodies are fixed respectively, thereby forming a stable whole in parallel combination, significantly improving seismic performance, effectively suppressing cable sway, avoiding the problem of loose joints caused by cable sway, and further improving the safety and reliability of electrical system operation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required for the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the copper busbar structure of the shaft-sealed main pump motor junction box of the present invention; Figure 2 This is a side structural schematic diagram of the copper busbar structure of the shaft-sealed main pump motor junction box of the present invention; Figure 3 This is a schematic diagram of the lead copper busbar body in the lead copper busbar structure of the shaft seal type main pump motor junction box of the present invention; Figure 4 This is a side view of the copper busbar body in the lead copper busbar structure of the shaft seal type main pump motor junction box of the present invention. Figure 5 for Figure 4 EE sectional view; Figure 6 This is a schematic diagram of the first baffle plate in the copper busbar structure of the shaft-sealed main pump motor junction box of the present invention; Figure 7 This is a schematic diagram of the second baffle plate in the copper busbar structure of the shaft-sealed main pump motor junction box of the present invention.

[0016] Explanation of reference numerals in the attached diagram: 1. Lead busbar body; 2. Post insulator; 3. Junction box; 4. Line-to-line insulator; 5. Motor stator winding lead wire; 6. Power supply line; 7. First arc-blocking plate; 8. Second arc-blocking plate; 11. Winding connection port; 12. Front connection port; 13. Rear connection port; 14. Mounting and fixing interface; 15. Mounting interface. Detailed Implementation

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required for the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0018] Example 1: like Figures 1 to 7 As shown, this embodiment provides a shaft-sealed main pump motor junction box lead copper busbar structure, including lead copper busbar body 1; Along the first direction, the lead copper bus body 1 is provided with a mounting and fixing interface 14; the mounting and fixing interface 14 is used to connect with the post insulator 2; Along the second direction, the lead copper bus body 1 is provided with an installation interface 15; the installation interface 15 is used to connect with the inter-line insulator 4; The first direction is perpendicular to the second direction.

[0019] When using the shaft-sealed main pump motor junction box lead copper busbar structure provided by this invention, the lead copper busbar body 1 is fixedly installed on the post insulator 2 through the installation fixing interface 14. By adjusting the size and position of the interface area, it can adapt to insulators of different specifications and types, so that the size of the junction box 3 on which the lead copper busbar body 1 is installed can be designed to be more compact and can meet the requirements of projects with multiple voltage levels. By connecting the line insulator 4 through the installation interface 15, the first direction and the second direction of multiple lead copper busbar bodies 1 are fixed respectively, thereby forming a stable whole in parallel combination, significantly improving the seismic performance, effectively suppressing cable sway, avoiding the problem of loose joints caused by cable sway, and further improving the safety and reliability of the electrical system operation.

[0020] Along the third direction, the lead copper bus body 1 includes a winding connection port 11 and a power connection port arranged opposite to each other; the winding connection port 11 is used to electrically connect to the motor stator winding lead 5, and the power connection port is used to electrically connect to the power supply line 6; the third direction is perpendicular to both the first direction and the second direction.

[0021] The winding connection port 11 includes at least one through hole. The terminals of the motor stator winding leads 5 are installed on the through hole with bolts. When the diameter of the cable used for the motor stator winding leads 5 is small, one motor stator winding lead 5 can be installed at each end of the through hole, or the number of through holes can be increased to install more motor stator winding leads 5, so as to meet the power demand of the motor and solve the problem that multiple sets of power lead cables cannot be installed on one lead copper busbar.

[0022] Depending on the connection direction of the motor stator winding lead 5, the winding connection port 11 can be oriented horizontally, vertically, or tilted, so that the winding connection port 11 is parallel to the motor stator winding lead 5. This facilitates the connection between the motor stator winding lead 5 and the winding connection port 11, reduces the stress at the connection point, and reduces accidents caused by deformation or breakage of the lead copper busbar body 1.

[0023] To increase the number of power connection points, the power connection ports include a front connection port 12 and a rear connection port 13, which are arranged side by side along a first direction. Power cable terminals can be bolted to both sides of the front connection port 12 and the rear connection port 13, allowing multiple sets of motor power cables 6 to be installed simultaneously.

[0024] Along the second direction, at least one arc-blocking plate is provided between adjacent lead copper busbar bodies 1. Specifically, the arc-blocking plates on both sides of the lead copper busbar body 1 are a first arc-blocking plate 7 and a second arc-blocking plate 8. The first arc-blocking plate 7 and the second arc-blocking plate 8 have mirror-symmetrical bending shapes and are made of thin carbon steel plates through processes such as cutting, drilling, and bending. Insulating paint is applied to enhance their insulation performance. After installing the first arc-blocking plate 7 and the second arc-blocking plate 8 on both sides of the lead copper busbar body 1, it is not necessary to increase the safety distance between the two lead copper busbar bodies 1. The shape and size of the first arc-blocking plate 7 and the second arc-blocking plate 8 can be adjusted according to the size of the power supply line 6 connector, for example, by increasing the size below after bending, or by adjusting the front and rear sizes according to the number of incoming power supply lines 6.

[0025] The copper busbar body 1 is a one-piece structure. It is made from a single piece of copper plate using CNC machining technology, and can be customized for complex structures and various installation requirements. All dimensions and cross-sections of the copper busbar body 1 must be calculated for strength and electrical properties to ensure that it meets both structural strength requirements and motor electrical requirements.

[0026] Example 2: This embodiment provides a junction box, which includes the lead copper busbar structure of the shaft-sealed main pump motor junction box in Embodiment 1.

[0027] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A copper busbar structure for the lead wires of a shaft-sealed main pump motor junction box, characterized in that, Including the copper busbar body (1); Along the first direction, the lead copper bus body (1) is provided with an installation and fixing interface (14); the installation and fixing interface (14) is used to connect with the post insulator (2); Along the second direction, the lead copper bus body (1) is provided with an installation interface (15); the installation interface (15) is used to connect with the line insulator (4); The first direction is perpendicular to the second direction.

2. The copper busbar structure for the shaft-sealed main pump motor junction box according to claim 1, characterized in that, Along the third direction, the lead copper bus body (1) includes a winding connection port (11) and a power connection port arranged opposite to each other; the winding connection port (11) is used to electrically connect to the motor stator winding lead (5), and the power connection port is used to electrically connect to the power supply line (6); the third direction is perpendicular to both the first direction and the second direction.

3. The copper busbar structure for the shaft-sealed main pump motor junction box according to claim 2, characterized in that, The power connection port includes a front connection port (12) and a rear connection port (13), which are arranged side by side along the first direction.

4. The copper busbar structure for the shaft-sealed main pump motor junction box according to claim 1, characterized in that, Along the second direction, at least one arc-blocking plate is provided between adjacent copper busbar bodies (1).

5. The copper busbar structure for the shaft-sealed main pump motor junction box according to claim 4, characterized in that, The surface of the arc-blocking plate is coated with rust-proof and insulating paint.

6. The copper busbar structure for the shaft-sealed main pump motor junction box according to claim 4, characterized in that, The arc-blocking plate is made of thin steel plate.

7. The copper busbar structure for the shaft-sealed main pump motor junction box according to claim 1, characterized in that, The copper busbar body (1) is an integral structure.

8. A junction box, characterized in that, It includes the copper busbar structure for the lead wire of the shaft-sealed main pump motor junction box as described in any one of claims 1 to 7.

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