A power filter for reducing insulation distance

Abstract

The utility model discloses a kind of power filter of reducing insulation distance, comprising: shell, the bottom end inside shell is fixedly connected with circuit board main body, the both ends of shell are provided with a plurality of terminal of electrical connection with circuit board main body, the inside of shell is filled with sulfur hexafluoride gas;Flow guide cylinder, flow guide cylinder is fixedly connected in the middle of one side of shell, the middle of other side of shell is fixedly connected with reflux cylinder, temperature maintenance component is assembled between flow guide cylinder and reflux cylinder, temperature maintenance component is used to maintain the temperature when circuit board main body operates, the utility model relates to power filter technical field;The utility model fills in the medium of insulation and arc extinguishing in the inside of shell, can effectively reduce the insulation distance of circuit board main body, and cooperate with the setting of external induced fan, can be assisted by the circulation heat exchange of gas in shell, maintain the operating temperature of circuit board main body, avoid circuit board main body overheating operation.

Description

Technical Field

[0001] This utility model relates to the field of power filter technology, specifically a power filter that reduces insulation distance. Background Technology

[0002] Power filters are key components for ensuring power quality and stable operation of electronic equipment. They mainly reduce electromagnetic interference and radio frequency interference in the power supply, improve the purity of the power supply, ensure the stable operation of electronic equipment, and reduce interference to other devices.

[0003] A search revealed a power filter with announcement number CN209134703U that uses sulfur hexafluoride gas to significantly reduce the insulation distance between electronic components.

[0004] However, in the above technology, the housing and mounting base are integrally molded, and the circuit board is located in the housing. During application, the heat generated by the circuit board will continuously accumulate inside the housing, which can easily lead to the circuit board overheating.

[0005] Therefore, this utility model provides a power filter that reduces insulation distance to solve the above problems. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a power filter that reduces insulation distance, thus solving the aforementioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a power filter for reducing insulation distance, comprising:

[0008] The housing has a circuit board body fixedly connected to its bottom. Both ends of the housing are provided with multiple terminals that are electrically connected to the circuit board body. The interior of the housing is filled with sulfur hexafluoride gas.

[0009] A flow guide tube is fixedly connected to the middle of one side of the housing, and a return tube is fixedly connected to the middle of the other side of the housing. A temperature maintenance component is assembled between the flow guide tube and the return tube, and the temperature maintenance component is used to maintain the temperature of the circuit board body during operation.

[0010] Preferably, the temperature-maintaining component includes:

[0011] An external exhaust fan is fixedly connected inside the guide tube. One end of the guide tube is fixedly connected to an outlet pipe. The top of the shell is fixedly connected to a heat exchange plate, and the middle part of the outlet pipe passes through the interior of the heat exchange plate.

[0012] A return pipe is fixedly connected to the middle of one side of the return cylinder. A flow control component is provided at one end of the return pipe and the outlet pipe that are close to each other. The flow control component is used to change the flow path of the gas in the outlet pipe.

[0013] Preferably, the flow control component includes:

[0014] A support frame is fixedly connected to the top of the housing. A flow control block is fixedly connected to the top of the support frame. An assembly cavity is opened in the middle of the flow control block. A flow guide channel communicating with the assembly cavity is opened at the top, bottom and one end of the flow control block. The end of the outlet pipe away from the flow guide cylinder is fixedly connected to the flow guide channel located at one end of the flow control block. The end of the return pipe away from the return cylinder is fixedly connected to the flow guide channel located at the bottom of the flow control block. A transmission pipe is fixedly connected to the flow guide channel located at the top of the flow control block.

[0015] A reversing ball is movably connected to the inside of the assembly cavity, and a reversing flow channel is provided inside the reversing ball;

[0016] A transmission assembly, which is mounted on one side of the flow control block, is used to cooperate with the assembly cavity to change the orientation of the reversing ball.

[0017] Preferably, the transmission assembly includes:

[0018] A transmission box is fixedly connected to one side of the flow control block. A transmission shaft is rotatably connected to the middle of the transmission box, and the end of the transmission shaft near the reversing ball is also fixedly connected to the reversing ball.

[0019] A central shaft is vertically rotatably connected to one end of the transmission box. A transmission worm is fixedly connected to one end of the central shaft inside the transmission box. A drive worm wheel is fixedly connected to the outside of the transmission shaft, and the drive worm wheel meshes with the transmission worm.

[0020] Preferably, the middle part of the outlet pipe is distributed in a serpentine shape inside the heat exchange plate, and multiple heat dissipation fins are fixedly connected to the top of the heat exchange plate.

[0021] Preferably, a sealing plug is provided at the top end of the transmission tube, and the sealing plug and the inner wall of the transmission tube are in a transition fit.

[0022] Preferably, the reversing channel is L-shaped, and the reversing point of the reversing channel is arc-shaped.

[0023] Preferably, the flow control block has an assembly hole at one end near the drive shaft, and the drive shaft is connected inside the assembly hole by a ball bearing.

[0024] Beneficial effects

[0025] This invention provides a power filter that reduces insulation distance. Compared with the prior art, it has the following advantages:

[0026] 1. This power filter that reduces insulation distance can effectively reduce the insulation distance of the circuit board body by filling the inside of the housing with insulating and arc-extinguishing media. In conjunction with the setting of the external exhaust fan, it can maintain the operating temperature of the circuit board body by means of heat exchange through the circulation of gas inside the housing, and avoid the circuit board body from overheating.

[0027] 2. This power filter with reduced insulation distance, through the setting of the flow control component, can change the flow path of gas inside the housing in conjunction with the rotation of the commutator ball, making it more convenient to replace and fill the gas inside the housing. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the internal structure of the shell of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the temperature-maintaining component of this utility model;

[0031] Figure 4 This is a schematic diagram of the flow control component of this utility model;

[0032] Figure 5 This is a schematic diagram of the separation structure of the assembly cavity and the reversing ball of this utility model.

[0033] In the diagram: 1. Shell; 2. Circuit board body; 3. Terminal block; 4. Flow guide tube; 5. Return tube; 6. Temperature control component; 7. External exhaust fan; 8. Outlet pipe; 9. Heat exchange plate; 10. Return pipe; 11. Flow control component; 12. Stand; 13. Flow control block; 14. Assembly cavity; 15. Flow guide channel; 16. Transmission pipe; 17. Reversing ball; 18. Reversing flow channel; 19. Transmission box; 20. Transmission shaft; 21. Central shaft; 22. Transmission worm gear; 23. Driving worm wheel. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example 1:

[0036] Please see Figure 1-5 A power supply filter that reduces insulation distance, comprising:

[0037] The housing 1 has a circuit board body 2 fixedly connected to the bottom of the housing 1. Both ends of the housing 1 are provided with multiple terminals 3 that are electrically connected to the circuit board body 2. The interior of the housing 1 is filled with sulfur hexafluoride gas.

[0038] A flow guide tube 4 is fixedly connected to the middle of one side of the housing 1, and a return tube 5 is fixedly connected to the middle of the other side of the housing 1. A temperature maintenance component 6 is assembled between the flow guide tube 4 and the return tube 5. The temperature maintenance component 6 is used to maintain the temperature of the circuit board body 2 during operation.

[0039] In this embodiment, the circuit board body 2 integrates:

[0040] Inductors: Used to block high-frequency noise from passing through power lines, and inductors are connected in parallel or series with the power lines.

[0041] Capacitors: Used to provide a path for high-frequency noise, guiding it to ground. Capacitors are connected in parallel with the power supply line.

[0042] Resistors are used to dissipate the energy of high-frequency noise and reduce its impact. Resistors can be used in series with inductors or capacitors, or independently.

[0043] Diode: Used to protect circuits from reverse voltage.

[0044] In summary, the circuit board body 2 is a mature existing technology, and will not be described in detail here;

[0045] In this embodiment, the terminal block 3 includes an input terminal, an output terminal, and a ground terminal. The input terminal and the output terminal are both connected to the inductor and the capacitor, and the ground terminal is connected to the grounding point on the circuit board body 2 to provide a path for high-frequency noise.

[0046] More specifically, sulfur hexafluoride gas is a colorless, odorless, non-toxic, and non-flammable inert gas with a density approximately five times that of air. This allows it to effectively suppress electric arcs and corona discharges in enclosed spaces, thereby reducing the insulation distance of the circuit board body 2.

[0047] In this embodiment, the temperature-maintaining component 6 includes:

[0048] An external exhaust fan 7 is fixedly connected inside the guide tube 4. One end of the guide tube 4 is fixedly connected to an outlet pipe 8. The top of the shell 1 is fixedly connected to a heat exchange plate 9, and the middle part of the outlet pipe 8 is also inserted inside the heat exchange plate 9.

[0049] The return pipe 10 is fixedly connected to the middle of one side of the return cylinder 5. A flow control component 11 is provided at the end of the return pipe 10 and the outlet pipe 8 that are close to each other. The flow control component 11 is used to change the flow path of the gas in the outlet pipe 8.

[0050] In this embodiment, the middle part of the outlet pipe 8 is distributed in a serpentine shape inside the heat exchange plate 9, and multiple heat dissipation fins are fixedly connected to the top of the heat exchange plate 9.

[0051] More specifically, by setting the path of the outlet pipe 8 at the heat exchange plate 9, the heat exchange time of the gas in the outlet pipe 8 in the heat exchange plate 9 can be maximized, so that the gas can be fully cooled.

[0052] Furthermore, both the heat exchange plate 9 and the heat dissipation fins can be made of copper to ensure the heat exchange effect of the outlet pipe 8 and the heat exchange plate 9.

[0053] In this embodiment, the flow control component 11 includes:

[0054] A support frame 12 is fixedly connected to the top of the housing 1. A flow control block 13 is fixedly connected to the top of the support frame 12. An assembly cavity 14 is opened in the middle of the flow control block 13. A flow guide channel 15 communicating with the assembly cavity 14 is opened at the top, bottom and one end of the flow control block 13. The end of the outlet pipe 8 away from the flow guide cylinder 4 is fixedly connected to the flow guide channel 15 located at one end of the flow control block 13. The end of the return pipe 10 away from the return cylinder 5 is fixedly connected to the flow guide channel 15 located at the bottom of the flow control block 13. A transmission pipe 16 is fixedly connected to the flow guide channel 15 located at the top of the flow control block 13.

[0055] A reversing ball 17 is movably connected to the inside of the assembly cavity 14, and a reversing flow channel 18 is provided inside the reversing ball 17.

[0056] The transmission assembly is mounted on one side of the flow control block 13 and is used to cooperate with the assembly cavity 14 to change the orientation of the reversing ball 17.

[0057] In this embodiment, a sealing plug is provided at the top end of the transmission pipe 16, and the sealing plug and the inner wall of the transmission pipe 16 are in transition fit.

[0058] More specifically, by setting the sealing plug, the top of the transmission pipe 16 can be sealed when the transmission pipe 16 is not in use, preventing dust and impurities from falling into the flow control block 13 through the transmission pipe 16. Before using the transmission pipe 16, the sealing plug can be pulled upward to remove it from the transmission pipe 16, thus releasing the seal on the top of the transmission pipe 16.

[0059] In this embodiment, the reversing channel 18 is L-shaped, and the reversing point of the reversing channel 18 is arc-shaped;

[0060] More specifically, through the structural characteristics of the reversing channel 18, the two ends of the reversing channel 18 can respectively correspond to two transmission pipes 16, and with the rotation of the reversing ball 17, the gas in the outlet pipe 8 can be transmitted to the return pipe 10 or the transmission pipe 16.

[0061] Furthermore, the arc shape at the reversing point of the reversing channel 18 reduces the impact of the gas on the reversing ball 17 during reversal, making the reversing ball 17 more stable.

[0062] Example 2:

[0063] Please see Figure 1-5 This embodiment provides a technical solution based on Embodiment 1: the transmission assembly includes:

[0064] The transmission box 19 is fixedly connected to one side of the flow control block 13. The transmission box 19 is rotatably connected to the middle of the transmission shaft 20. The end of the transmission shaft 20 near the reversing ball 17 is also fixedly connected to the reversing ball 17.

[0065] The central shaft 21 is vertically rotatably connected to one end of the transmission box 19. The end of the central shaft 21 located inside the transmission box 19 is fixedly connected to the transmission worm 22. The outer side of the transmission shaft 20 is fixedly connected to the drive worm wheel 23, and the drive worm wheel 23 meshes with the transmission worm 22.

[0066] In this embodiment, the flow control block 13 has an assembly hole at one end near the drive shaft 20, and the drive shaft 20 is connected to the inside of the assembly hole by a ball bearing;

[0067] More specifically, the mounting holes provide space for the assembly of the drive shaft 20 and the reversing ball 17, and the ball bearings ensure the smooth rotation of the drive shaft 20 within the mounting holes.

[0068] Furthermore, to prevent external dust or other impurities from entering the assembly cavity 14 through the assembly holes, multiple sealing grooves are provided on the outer side of the drive shaft 20, and a sealing ring is provided inside each sealing groove to form a dynamic seal after the drive shaft 20 rotates.

[0069] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0070] During operation, first connect the wiring harness of the external device to the terminal block 3. Then rotate the central shaft 21 to cause the transmission worm gear 22 to drive the matching worm wheel 23. With the connection between the transmission shaft 20 and the reversing ball 17, the reversing ball 17 can rotate under the support of the assembly cavity 14 until one end of the reversing channel 18 faces the outlet pipe 8 and the other end faces the transmission pipe 16. Then connect the external sulfur hexafluoride gas pipeline to the transmission pipe 16. Then start the external exhaust fan 7 to send the sulfur hexafluoride gas into the housing 1 through the outlet pipe 8 and the guide tube 4. By taking advantage of the characteristics of sulfur hexafluoride gas, the insulation distance of the circuit board body 2 is reduced. After the sulfur hexafluoride gas is filled, rotate the central shaft 21 to turn one end of the reversing channel 18 towards the outlet pipe 8 and the other end towards the return pipe 10.

[0071] When the circuit board body 2 is running continuously, the external exhaust fan 7 is started to send the heated airflow in the shell 1 to the heat exchange plate 9 through the outlet pipe 8. Due to the characteristics of the heat exchange plate 9, it can exchange heat with the gas in the outlet pipe 8 to cool the gas. The cooled airflow will enter the return pipe 10 through the reversing channel 18 and return to the shell 1 through the return pipe 10. In this way, the operating temperature of the circuit board body 2 can be maintained and the circuit board body 2 can be prevented from overheating.

[0072] When it is necessary to replace the sulfur hexafluoride gas, one end of the reversing channel 18 is aligned with the outlet pipe 8, and the other end of the reversing channel 18 is aligned with the transmission pipe 16. The sulfur hexafluoride gas in the housing 1 is extracted by running the external exhaust fan 7, thereby replacing the sulfur hexafluoride gas.

[0073] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0074] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power supply filter that reduces insulation distance, characterized in that: include: The housing (1) has a circuit board body (2) fixedly connected to the bottom of the housing (1). Both ends of the housing (1) are provided with multiple terminals (3) that are electrically connected to the circuit board body (2). The interior of the housing (1) is filled with sulfur hexafluoride gas. A flow guide tube (4) is fixedly connected to the middle of one side of the housing (1), and a return tube (5) is fixedly connected to the middle of the other side of the housing (1). A temperature maintenance component (6) is assembled between the flow guide tube (4) and the return tube (5). The temperature maintenance component (6) is used to maintain the temperature of the circuit board body (2) during operation.

2. A power filter for reducing insulation distance according to claim 1, characterized in that: The temperature-maintaining component (6) includes: An external exhaust fan (7) is fixedly connected inside the guide tube (4). One end of the guide tube (4) is fixedly connected to an outlet pipe (8). The top of the shell (1) is fixedly connected to a heat exchange plate (9), and the middle part of the outlet pipe (8) is also inserted inside the heat exchange plate (9). The return pipe (10) is fixedly connected to the middle of one side of the return cylinder (5). A flow control component (11) is provided at one end of the return pipe (10) and the outlet pipe (8) that are close to each other. The flow control component (11) is used to change the flow path of the gas in the outlet pipe (8).

3. A power filter for reducing insulation distance according to claim 2, characterized in that: The flow control component (11) includes: A support frame (12) is fixedly connected to the top of the housing (1). A flow control block (13) is fixedly connected to the top of the support frame (12). An assembly cavity (14) is opened in the middle of the flow control block (13). A flow guide channel (15) communicating with the assembly cavity (14) is opened at the top, bottom and one end of the flow control block (13). The end of the outlet pipe (8) away from the flow guide cylinder (4) is fixedly connected to the flow guide channel (15) at one end of the flow control block (13). The end of the return pipe (10) away from the return cylinder (5) is fixedly connected to the flow guide channel (15) at the bottom of the flow control block (13). A transmission pipe (16) is fixedly connected to the flow guide channel (15) at the top of the flow control block (13). A reversing ball (17) is movably connected to the inside of the assembly cavity (14), and a reversing flow channel (18) is provided inside the reversing ball (17); A transmission assembly is mounted on one side of the flow control block (13) and is used to cooperate with the assembly cavity (14) to change the orientation of the reversing ball (17).

4. A power filter for reducing insulation distance according to claim 3, characterized in that: The transmission assembly includes: The transmission box (19) is fixedly connected to one side of the flow control block (13). The transmission box (19) is rotatably connected to the middle of the transmission box (19). The end of the transmission shaft (20) near the reversing ball (17) is also fixedly connected to the reversing ball (17). A central shaft (21) is vertically rotatably connected to one end of a transmission box (19). A transmission worm (22) is fixedly connected to one end of the central shaft (21) inside the transmission box (19). A drive worm wheel (23) is fixedly connected to the outside of the transmission shaft (20), and the drive worm wheel (23) meshes with the transmission worm (22).

5. A power filter for reducing insulation distance according to claim 2, characterized in that: The middle part of the outlet pipe (8) is distributed in a serpentine shape inside the heat exchange plate (9), and multiple heat dissipation fins are fixedly connected to the top of the heat exchange plate (9).

6. A power filter for reducing insulation distance according to claim 3, characterized in that: The top end of the transmission tube (16) is provided with a sealing plug, and the sealing plug and the inner wall of the transmission tube (16) are in transition fit.

7. A power filter for reducing insulation distance according to claim 3, characterized in that: The reversing channel (18) is L-shaped, and the reversing point of the reversing channel (18) is arc-shaped.

8. A power filter for reducing insulation distance according to claim 4, characterized in that: The flow control block (13) has an assembly hole at one end near the drive shaft (20), and the drive shaft (20) is connected inside the assembly hole by a ball bearing.

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