Low voltage switchgear with wiring channel

Abstract

The application belongs to the technical field of low-voltage complete equipment, and particularly relates to low-voltage complete equipment with wiring channels, which comprises a matched casing, a wiring casing is arranged on one side of the matched casing, a low-voltage equipment main body is arranged in the matched casing, and a wiring mechanism is arranged in the wiring casing. The wiring assembly is arranged to quickly clamp and fix the cable penetrating the wiring ring, and the wiring ring can be axially slid along the supporting pipe to adjust and fix the position, so that the cable arrangement requirement at different heights can be flexibly adapted, the cable displacement due to vibration or gravity can be avoided, the long-term contact reliability of the wiring terminal is ensured, the heat of the metal sheet in the communication hole can be reduced by the heat exchange oil flowing in the hose, the high thermal conductivity of the metal sheet is utilized to specifically cool the line, the line aging or signal transmission abnormality due to excessively high temperature can be avoided, and the wiring assembly has the dual functions of fixing and heat dissipation.

Description

Technical Field

[0001] This invention belongs to the technical field of low-voltage switchgear, and in particular, a low-voltage switchgear with wiring channels. Background Technology

[0002] Low-voltage switchgear plays a vital role in low-voltage power supply and distribution systems, performing functions such as power control, protection, measurement, conversion, and distribution. It is widely used in power plants, substations, petrochemical plants, metallurgical steel rolling mills, factories and mines, and high-rise buildings. As low-voltage power distribution systems develop towards higher power density and intelligence, the operational stability and service life of low-voltage switchgear face higher requirements. Low-voltage switchgear with wiring channels refers to low-voltage switchgear with a structure or space specifically designed inside the cabinet for laying, managing, and fixing cables.

[0003] In practical applications, existing low-voltage switchgear typically fixes components inside the cabinet before connecting wires for wiring. Common methods include using cable ties or screws to tighten clamps to secure the wires. However, due to the large number of wire harnesses inside the switchgear, a large number of cable ties or clamps are required. Cable ties need to find support points for the wires, while clamps need to be locked with screws. This process is troublesome, time-consuming, and labor-intensive, hindering rapid wiring. Furthermore, the cables are easily tangled and mixed together, making them difficult to distinguish and causing many inconveniences for installation, maintenance, and repair. Summary of the Invention

[0004] The purpose of this invention is to address the problems mentioned in the background section by providing a low-voltage switchgear with a wiring channel.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions:

[0006] A low-voltage complete set of equipment with a wiring channel includes a matching housing, a wiring housing on one side of the matching housing, a low-voltage equipment body inside the matching housing, a wiring mechanism inside the wiring housing, and a plurality of cooling components arranged in an array below the low-voltage equipment body.

[0007] The wiring mechanism includes a refrigeration cabinet fixed inside the wiring housing. At least one flexible tube is fixed to the lower end of the refrigeration cabinet. Multiple wire harnesses are arranged in an array below the refrigeration cabinet. A support tube is fixed to the refrigeration cabinet. A motor is fixed to the bottom wall of the refrigeration cabinet. Multiple adjustment components are arranged above the motor.

[0008] Preferably, the refrigeration cabinet is equipped with a liquid supply device, and the output end of the liquid supply device is fixedly connected to multiple hoses.

[0009] Preferably, the wire harness assembly includes a wire harness ring, magnetic sheets are symmetrically fixed on the outer surface of the wire harness ring, a plurality of partition plates are arrayed and fixed on the inner wall of the wire harness ring, a pressurized airbag is embedded on the outer surface of the wire harness ring, a fixing airbag is fixed between the partition plates, and a connecting hole is opened on the inner wall of the wire harness ring.

[0010] Preferably, a metal sheet is provided inside the connecting hole.

[0011] Preferably, the adjustment assembly includes a support ring fixedly connected to the support tube, a hollow column rotatably connected inside the support ring, a plurality of rectangular grooves arrayed on the outer surface of the hollow column, a fixing frame fixed inside the hollow column, a plurality of telescopic components fixed on the outer surface of the fixing frame, and a plurality of telescopic components passing through the plurality of rectangular grooves and fixedly connected to a sealing plate.

[0012] Preferably, the plurality of hollow columns are fixedly connected, and the lowest hollow column is fixedly connected to the output end of the adjustment component.

[0013] Preferably, the cooling component includes a support frame fixed inside the housing, a heat exchange tube fixed inside the support frame, a metal frame fixed inside the heat exchange tube, and a power supply device inside the metal frame.

[0014] Preferably, the heat exchange tube is fixedly connected to the support ring.

[0015] Preferably, a second telescopic component is fixed inside the support frame, a movable plate is fixed to the telescopic end of the second telescopic component, two triangular plates are symmetrically fixed to the upper end of the movable plate, two fixed frames are symmetrically and elastically connected to the inner wall of the support frame, and two insulation plates are rotatably connected inside the fixed frames.

[0016] Preferably, torsion springs are provided at the connection points between the two insulation boards and the fixing frame.

[0017] Compared with existing technologies, the advantages of this low-voltage switchgear with wiring channels are:

[0018] 1. This invention, by setting up a cable harness assembly, can quickly clamp and fix cables passing through the cable harness ring without the need for additional tools or screws. The operation is simple and quick. The cable harness ring can slide and adjust its fixed position arbitrarily along the axis of the support tube, which can flexibly adapt to the cable management needs at different heights. It can prevent the cables from shifting due to vibration or their own weight, ensuring the long-term contact reliability of the terminals. In addition, the heat exchange oil flowing in the hose can reduce the heat of the metal plate in the connecting hole. The high thermal conductivity of the metal plate can be used to specifically cool the circuit, preventing the circuit from aging or abnormal signal transmission due to excessive temperature. Thus, the cable harness assembly has both fixing and heat dissipation functions.

[0019] 2. This invention, by setting an adjustment component and controlling the position of the sealing plate by activating the telescopic component, can adjust the effective flow cross-sectional area within the rectangular groove, thereby precisely controlling the flow rate of heat exchange oil through each heat exchange tube. In conjunction with the synchronous rotation of multiple hollow columns driven by a motor and real-time monitoring by a temperature sensor, the cooling intensity can be independently adjusted according to the actual temperature within each support frame. Areas with higher temperatures receive faster heat exchange oil flow rates, achieving on-demand cooling and precise temperature reduction, avoiding local overcooling or overheating, and effectively improving the overall temperature control uniformity.

[0020] 3. In low-temperature environments, the present invention allows the insulation board to be attached to both sides of the power supply equipment. The residual heat generated by the equipment itself is used to maintain a suitable temperature under the insulation of the insulation board, which effectively prevents the battery or electronic components from increasing internal resistance or failing to start due to low temperature. This allows the equipment to maintain a suitable operating temperature in both high and low temperature environments, thus improving the equipment's all-weather adaptability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a low-voltage complete set of equipment with wiring channels provided by the present invention;

[0022] Figure 2 This is a schematic diagram of the overall internal structure of a low-voltage switchgear with wiring channels provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the wiring mechanism structure of a low-voltage complete set of equipment with wiring channels provided by the present invention;

[0024] Figure 4 This is a schematic diagram of a wiring harness assembly structure for a low-voltage complete set of equipment with a wiring channel provided by the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the regulating component of a low-voltage complete set of equipment with wiring channels provided by the present invention.

[0026] Figure 6 This is a schematic diagram of the internal structure of a cooling component of a low-voltage complete set of equipment with wiring channels provided by the present invention;

[0027] Figure 7 This invention provides Figure 6 Enlarged schematic diagram of the structure at point A in the diagram;

[0028] Figure 8 This is a schematic diagram of the internal structure of the support frame of a low-voltage complete set of equipment with wiring channels provided by the present invention;

[0029] Figure 9 This invention provides Figure 8 Enlarged schematic diagram of the structure at point B in the diagram.

[0030] In the diagram: 1. Matching housing; 2. Wiring housing; 3. Low-voltage equipment body; 4. Wiring mechanism; 5. Cooling component; 41. Refrigeration cabinet; 42. Flexible hose; 43. Cable harness assembly; 44. Support tube; 45. Motor; 46. Adjustment component; 431. Cable harness ring; 432. Divider plate; 433. Pressurized airbag; 434. Fixed airbag; 435. Connecting hole; 461. Support ring; 462. Hollow column; 463. Rectangular groove; 464. Fixing frame; 465. Telescopic component one; 466. Sealing plate; 51. Support frame; 52. Heat exchange tube; 53. Metal frame; 54. Power supply equipment; 511. Telescopic component two; 512. Movable plate; 513. Triangular plate; 514. Fixing frame; 515. Insulation board. Detailed Implementation

[0031] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0032] Example: Refer to Figures 1 to 9 A low-voltage complete set of equipment with wiring channels includes a matching housing 1, characterized in that: a wiring housing 2 is provided on one side of the matching housing 1, a low-voltage equipment body 3 is provided inside the matching housing 1, a wiring mechanism 4 is provided inside the wiring housing 2, and a plurality of cooling components 5 are arrayed below the low-voltage equipment body 3.

[0033] To further explain, such as Figure 3 As shown, the wiring mechanism 4 includes a refrigeration cabinet 41 fixed inside the wiring housing 2. At least one hose 42 is fixed to the lower end of the refrigeration cabinet 41. A liquid supply device is provided inside the refrigeration cabinet 41. The output end of the liquid supply device is fixedly connected to multiple hoses 42. Multiple wire harness assemblies 43 are arranged in an array below the refrigeration cabinet 41. A support tube 44 is fixed on the refrigeration cabinet 41. A motor 45 is fixed to the bottom wall of the refrigeration cabinet 41. Multiple adjustment components 46 are provided above the motor 45.

[0034] To elaborate further, such as Figure 4 As shown, the wire harness assembly 43 includes a wire harness ring 431. Magnetic sheets are symmetrically fixed on the outer surface of the wire harness ring 431. Multiple partition plates 432 are arrayed and fixed on the inner wall of the wire harness ring 431. A pressurized airbag 433 is embedded on the outer surface of the wire harness ring 431. A fixing airbag 434 is fixed between the partition plates 432. A connecting hole 435 is opened on the inner wall of the wire harness ring 431, and a metal sheet is disposed inside the connecting hole 435.

[0035] Specifically, the refrigeration cabinet 41 consists of a cover plate, a bottom plate, a liquid pump device, and a cooling device. A wiring hole is pre-drilled on the bottom plate. When wiring, the cover plate needs to be opened, and the cable is laid downwards through the wiring hole. As the cable passes through the hole, it will be located between the inner walls of the fixing airbag 434 and the cable tie ring 431. After wiring is completed, the cable inside the wiring housing 2 remains loose. At this point, simply manually move the cable tie ring 431 to the corresponding position, and then squeeze the pressurized airbag 433 to expel outside air into the multiple fixing airbags 434. The gas then settles within the fixing airbags 434. The internal structure increases the volume of the equipment, and then the cables inside are fixed to achieve the purpose of cable bundling. It should be noted that heat is generated inside the cabinet during the operation of the low-voltage switchgear, which affects the transmission between equipment. At this time, the pumping device is started to draw heat exchange oil with a lower temperature from the cooling device. The oil is first discharged into multiple hoses 42. The heat exchange oil flowing in the hoses 42 will reduce the heat of the metal sheet in the connecting hole 435. Then, the temperature of the cable is reduced by the metal sheet. The cable bundling ring 431 is made of rubber and has a certain heat insulation effect, ensuring that the metal sheet can effectively cool the cable.

[0036] To further explain, such as Figure 5 As shown, the adjustment component 46 includes a support ring 461 fixedly connected to the support tube 44. A hollow column 462 is rotatably connected inside the support ring 461. Multiple hollow columns 462 are fixedly connected. The lowest hollow column 462 is fixedly connected to the output end of the adjustment component 46. Multiple rectangular slots 463 are arrayed on the outer surface of the hollow column 462. A fixing frame 464 is fixed inside the hollow column 462. Multiple telescopic members 465 are arrayed on the outer surface of the fixing frame 464. The multiple telescopic members 465 pass through the multiple rectangular slots 463 and are fixedly connected to a sealing plate 466.

[0037] To elaborate further, such as Figure 6 and Figure 7 As shown, the cooling component 5 includes a support frame 51 fixed inside the matching housing 1, a heat exchange tube 52 fixed inside the support frame 51, the heat exchange tube 52 being fixedly connected to the support ring 461, a metal frame 53 fixed inside the heat exchange tube 52, and a power supply device 54 being provided inside the metal frame 53.

[0038] Specifically, the power supply equipment 54 located within the metal frame 53 also requires heat dissipation during daily operation. The heat exchange oil in the hose 42 enters the upper port of the support pipe 44, then flows downwards, and finally branches through several branch pipes to the support ring 461. Simultaneously, the pump device is started, and the motor 45 is also started, enabling it to drive multiple hollow columns 462 to rotate simultaneously. The heat exchange oil flows normally through the rectangular grooves 463 on the outer surface of the hollow columns 462, entering the heat exchange tube 52 to cool the power supply equipment 54 within the metal frame 53. Then, the oil returns to the cooling device through pipes, and the cycle repeats to cool the device. It should be noted that by monitoring the temperature in different support frames 51, the flow rate of the heat exchange oil can be adjusted according to the temperature in the support frame 51. By activating the telescopic component 465, the position of the sealing plate 466 can be controlled, thereby adjusting the capacity in the rectangular groove 463. Since the rotation speed of multiple hollow columns 462 is the same, the flow rate of the heat exchange oil in the heat exchange tube 52 can be adjusted. The higher the temperature, the faster the flow rate of the heat exchange oil, so that it can better remove the heat generated by the power supply equipment 54.

[0039] To further explain, such as Figure 8 and Figure 9 As shown, a telescopic component 511 is fixed inside the support frame 51. A movable plate 512 is fixed to the telescopic end of the telescopic component 511. Two triangular plates 513 are symmetrically fixed to the upper end of the movable plate 512. Two fixed frames 514 are symmetrically and elastically connected to the inner wall of the support frame 51. Two insulation plates 515 are rotatably connected inside the fixed frames 514. Torsion springs are provided at the connection between the two insulation plates 515 and the fixed frames 514.

[0040] Specifically, since the device should be installed in an open or outdoor area, the cooling operation can be stopped when the temperature drops at night. In order to ensure that the power supply equipment 54 maintains a suitable temperature and does not lose power due to low temperature, the telescopic component 2 511 is activated to extend it. The telescopic component 2 511 will drive the movable plate 512 and the two triangular plates 513 to move simultaneously. The triangular plates 513 will push the two fixed frames 514 to move closer to each other, so that the insulation plate 515 fits against the two sides of the power supply equipment 54. The heat generated when the device is working will be used to keep it warm, ensuring that the power supply equipment 54 will not lose power due to low temperature.

[0041] The functional principle of this invention can be explained through the following operation: During the installation or maintenance phase, the operator manually slides the cable tie ring 431 along the axis of the support tube 44 to the required fixed position. During this process, a gap is reserved between the inner wall of the cable tie ring 431 and the cable. Then, the operator manually squeezes the pressure airbag 433 embedded on the outer surface of the cable tie ring 431. The pressure airbag 433 is compressed and deformed, which increases the internal air pressure. The high-pressure gas is guided into the fixed airbag 434 through the connecting hole 435 opened in the inner wall of the cable tie ring 431. The fixed airbag 434 expands in volume under the action of air pressure, and its outer surface tightly abuts against the cable sheath. At the same time, the outer side of the fixed airbag 434 is limited by the inner wall of the cable tie ring 431, thereby clamping the cable between the fixed airbag 434 and the inner wall of the cable tie ring 431, completing the mechanical locking of the cable. This linkage process does not require an additional power source and only relies on manual pressure to achieve air pressure transmission. The fixed point position can be adjusted arbitrarily along the support tube 44, effectively avoiding the displacement of the cable due to vibration or its own weight, and ensuring the long-term contact reliability of the terminal.

[0042] After the equipment enters normal operation, the pump system inside the refrigeration cabinet 41 starts, and its output end pressurizes the low-temperature heat exchange oil into multiple hoses 42. The oil in the hoses 42 flows directly over the surface of the metal sheet embedded inside the cable tie ring 431. The high thermal conductivity of the metal sheet transfers the heat generated by the cable operation to the heat exchange oil. Then, the heat exchange oil enters its internal flow channel through the upper port of the support tube 44 and flows downward along the support tube 44 to the support rings 461 of each regulating component 46. The support rings 461 and the heat exchange tubes 52 are connected by a flow channel. After the hollow column 462 is connected and the motor 45 is started, its output shaft drives multiple hollow columns 462 to rotate synchronously around their own axis through a fixed connector. The heat exchange oil will enter the heat exchange tube 52 to cool the power supply equipment 54 in the metal frame 53. Finally, it will return to the cooling device through the pipeline. The cycle repeats to cool the device in turn. The rectangular grooves 463 arrayed on the outer surface of the hollow column 462 change their relative position with the inner wall of the support ring 461 periodically as it rotates. However, this rotation action itself does not directly regulate the flow rate.

[0043] Flow regulation relies on a telescopic component 465 fixed inside the hollow column 462. Temperature sensors detect real-time temperature values ​​within each support frame 51 and convert them into electrical signals. The controller drives the telescopic component 465 to extend and retract axially based on these signals. The movable end of the telescopic component 465 is fixedly connected to a sealing plate 466, which penetrates and extends into the rectangular groove 463. When the telescopic component 465 extends, the sealing plate 466 pushes into the rectangular groove 463, reducing the effective flow cross-sectional area and thus decreasing the oil flow rate through the groove. When the telescopic component 465 retracts, the sealing plate 466 retracts, increasing the flow cross-sectional area and boosting the flow rate. During this linkage process, the rotational motion provided by the motor 45 is only used to maintain the continuous rotation of the hollow column 462, while the precise control of the flow rate is independently achieved by the linear motion of the telescopic component 465. The combined effect of these two mechanisms ensures the smooth flow of oil. The oil flow rate into each heat exchange tube 52 forms a negative feedback regulation with the heat generation in the corresponding support frame 51. The expansion joint 465 corresponding to the higher temperature area contracts more, allowing more cooling oil to enter the heat exchange tube 52. The opposite is true for the lower temperature area. The heat exchange oil flows into the heat exchange tube 52 through the rectangular groove 463. The heat exchange tube 52 is tightly attached to the outer wall of the metal frame 53. The metal frame 53 houses the power supply equipment 54. When the oil flows through the heat exchange tube 52, it exchanges heat with the metal frame 53 through the tube wall, carrying away the heat generated by the power supply equipment 54. The oil that has absorbed heat collects from the outlet of the heat exchange tube 52 into the main return pipe and returns to the refrigeration cabinet 41. This achieves independent cooling for the cables and the power supply equipment 54. Furthermore, through the linkage between the expansion joint 465 and the sealing plate 466, each support frame 51 obtains a cooling intensity that matches its actual temperature, avoiding local overcooling or overheating and improving the overall temperature control uniformity.

[0044] When the ambient temperature drops below the set threshold and the system decides to pause active cooling, the thermal insulation linkage mechanism starts to operate. Telescopic component 511 is fixedly installed at the bottom of the inner wall of the support frame 51, with its telescopic end fixedly connected to the movable plate 512. Two triangular plates 513 are symmetrically fixed to the upper end of the movable plate 512, with the inclined surfaces of the triangular plates 513 facing the fixed frames 514 on both sides. After the controller sends a start signal, the telescopic end of telescopic component 511 extends upwards in a straight line, pushing the movable plate 512 and triangular plates 513 upwards synchronously. The inclined outer surface of the triangular plates 513 gradually contacts the mating inclined surface on the inner side of the lower end of the fixed frame 514. Since the fixed frame 514 is symmetrically connected to both sides of the inner wall of the support frame 51 through elastic elements and has radial freedom, when the triangular plates 513 move upwards, their inclined surfaces provide a horizontal component force to the fixed frame 514. This component force overcomes the preload of the elastic elements, pushing the left and right fixed frames 514. The support frame 51 slides radially toward each other. Two insulation plates 515 are rotatably connected to the inner side of the fixed frame 514. The insulation plates 515 move toward the center with the fixed frame 514 until their inner surfaces are tightly attached to the outer walls of both sides of the power supply equipment 54. This converts the vertical linear motion of the telescopic component 511 into the horizontal linear motion of the fixed frame 514. The insulation plates 515 then achieve heat insulation coverage through surface contact with the power supply equipment 54. The residual heat generated by the power supply equipment 54 itself is used to maintain a suitable temperature under the insulation of the insulation plates 515, preventing the battery or electronic components from increasing internal resistance or failing to start due to low temperature. When the temperature rises and active cooling needs to be restored, the telescopic component 511 retracts and moves back, the movable plate 512 and the triangular plate 513 move down, and the fixed frame 514 resets to the outside under the action of the elastic restoring force. The insulation plates 515 detach from the power supply equipment 54, and the cooling cycle restarts.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-voltage switchgear with wiring channels, comprising a housing (1), characterized in that: The matching housing (1) has a wiring housing (2) on one side, a low-voltage equipment body (3) inside the matching housing (1), a wiring mechanism (4) inside the wiring housing (2), and multiple cooling components (5) arranged in an array below the low-voltage equipment body (3). The wiring mechanism (4) includes a refrigeration cabinet (41) fixed inside the wiring housing (2). At least one flexible tube (42) is fixed at the lower end of the refrigeration cabinet (41). Multiple wire harnesses (43) are arranged in an array below the refrigeration cabinet (41). A support tube (44) is fixed on the refrigeration cabinet (41). A motor (45) is fixed on the bottom wall of the refrigeration cabinet (41). Multiple adjustment components (46) are arranged above the motor (45).

2. The low-voltage switchgear with wiring channel according to claim 1, characterized in that, The refrigeration cabinet (41) is equipped with a liquid supply device, and the output end of the liquid supply device is fixedly connected to multiple hoses (42).

3. A low-voltage switchgear with wiring channels according to claim 1, characterized in that, The wire harness assembly (43) includes a wire harness ring (431), on which magnetic sheets are symmetrically fixed on the outer surface. Multiple partition plates (432) are arrayed and fixed on the inner wall of the wire harness ring (431). A pressurized airbag (433) is embedded on the outer surface of the wire harness ring (431). A fixing airbag (434) is fixed between the partition plates (432). A connecting hole (435) is opened on the inner wall of the wire harness ring (431).

4. A low-voltage switchgear with wiring channels according to claim 3, characterized in that, A metal sheet is provided inside the connecting hole (435).

5. A low-voltage switchgear with wiring channels according to claim 1, characterized in that, The adjustment assembly (46) includes a support ring (461) fixedly connected to the support tube (44), a hollow column (462) rotatably connected inside the support ring (461), a plurality of rectangular grooves (463) arrayed on the outer surface of the hollow column (462), a fixing frame (464) fixed inside the hollow column (462), a plurality of telescopic components (465) arrayed on the outer surface of the fixing frame (464), and a plurality of telescopic components (465) respectively penetrating into the plurality of rectangular grooves (463) and fixedly connected to a sealing plate (466).

6. A low-voltage switchgear with wiring channels according to claim 5, characterized in that, Multiple hollow columns (462) are fixedly connected, and the lowest hollow column (462) is fixedly connected to the output end of the adjustment component (46).

7. A low-voltage switchgear with wiring channels according to claim 5, characterized in that, The cooling component (5) includes a support frame (51) fixed inside the matching housing (1), a heat exchange tube (52) fixed inside the support frame (51), a metal frame (53) fixed inside the heat exchange tube (52), and a power supply device (54) provided inside the metal frame (53).

8. A low-voltage switchgear with wiring channels according to claim 7, characterized in that, The heat exchange tube (52) is fixedly connected to the support ring (461).

9. A low-voltage switchgear with wiring channels according to claim 7, characterized in that, The support frame (51) is fixed with a telescopic component two (511), and a movable plate (512) is fixed at the telescopic end of the telescopic component two (511). Two triangular plates (513) are symmetrically fixed at the upper end of the movable plate (512). Two fixed frames (514) are symmetrically elastically connected to the inner wall of the support frame (51), and two insulation plates (515) are rotatably connected inside the fixed frames (514).

10. A low-voltage switchgear with wiring channels according to claim 9, characterized in that, Both insulation boards (515) are provided with torsion springs at the connection points with the fixing frame (514).

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