Direct current surge arrester box

Abstract

The utility model provides direct current lightning arrester box, including direct current lightning arrester box shell still include: ventilation heat dissipation structure, ventilation heat dissipation structure sets up on direct current lightning arrester box shell, cleaning structure, cleaning structure sets up in ventilation heat dissipation structure, push structure, push structure sets up at the back of direct current lightning arrester box shell. Part of flowing air in the moving process of direct current lightning arrester box shell can enter ventilation pipe and flow through ventilation spout, better take away the temperature in direct current lightning arrester box shell, conveniently better heat dissipation is carried out to the inside of direct current lightning arrester box shell, avoids high temperature influence the service life of direct current lightning arrester, and the wiping block is moved through the extension of electric push rod and pushes, and the inside wall of ventilation pipe is wiped and cleaned in the moving process of wiping block, conveniently better the inside wall of ventilation pipe is cleaned, avoids dust and influences the heat dissipation of ventilation pipe.

Description

Technical Field

[0001] This utility model relates to the field of DC surge arrester technology, and in particular to DC surge arrester boxes. Background Technology

[0002] A DC surge arrester box is a surge protection device specifically designed to protect DC power systems from lightning overvoltage. It uses a built-in DC surge arrester to quickly discharge overvoltage to the ground, ensuring the safe operation of power equipment and systems.

[0003] In the existing Chinese utility model publication CN222620685U, a DC surge arrester box is disclosed, including a box body with windows on the front and rear sides. A column is fixedly installed on the bottom of the inner wall of the box body. A high-voltage cable cover and a grounding cable cover are provided on the outer wall of the side of the box body without windows. The high-voltage cable cover is installed through the upper side of the outer wall of the box body, and the grounding cable cover is installed through the lower side of the outer wall of the box body. A surge arrester is fixedly installed inside the box body. The surge arrester is encapsulated in a die-cast silicone rubber jacket. A mounting base is fixedly connected to the bottom of the surge arrester. A high-voltage terminal is provided on the top of the surge arrester. The beneficial effects of this utility model are: by adding a sealed box to the DC surge arrester, the surge arrester operates in a relatively clean environment, preventing the accumulation of dirt on the surface of the composite jacket skirt, reducing the frequency of cleaning the surge arrester skirt, and also preventing damage to the surge arrester jacket from foreign objects jumping off the ground when the vehicle is running. It also makes car washing easier, eliminating concerns about flashover faults caused by wet surface of the surge arrester skirt, greatly reducing the surge arrester failure rate, improving the reliability of surge arrester operation, and saving vehicle maintenance costs.

[0004] Referring to the aforementioned DC surge arrester box, its overall enclosed design, while preventing damage to the arrester housing from flying foreign objects, also lacks effective heat dissipation. During long-term operation, the resistor elements of the DC surge arrester will experience temperature rise due to energy loss, especially noticeable in the enclosed space. Prolonged high temperatures can negatively impact the lifespan of the DC surge arrester. Therefore, effectively dissipating heat from the inside of the DC surge arrester box to prevent high temperatures from affecting the arrester's lifespan is a crucial issue that needs to be addressed in the design of DC surge arrester boxes. Utility Model Content

[0005] This invention provides a DC surge arrester box to solve the problem that enclosed DC surge arrester boxes do not have good heat dissipation.

[0006] This utility model solves the above-mentioned technical problems through the following technical solutions: This utility model provides a DC surge arrester box, including a DC surge arrester box housing, and further comprising: A ventilation and heat dissipation structure is installed on the housing of the DC surge arrester box; A cleaning structure is provided within a ventilation and heat dissipation structure. A pushing structure is provided on the back of the DC surge arrester housing. The movement of the pushing structure drives the cleaning structure to clean the ventilation and heat dissipation structure.

[0007] Preferably, a DC surge arrester is fixedly installed in the center of the inner side wall of the DC surge arrester box.

[0008] Preferably, two "L"-shaped mounting brackets are fixedly connected to the top side wall of the DC surge arrester housing, and mounting holes are provided on the side wall of the horizontal plate of the mounting bracket.

[0009] In this technical solution, the mounting bracket can be fixedly installed on the bottom of the rail transit vehicle by passing the fixing bolt through the mounting hole, thereby fixing the DC surge arrester on the bottom of the rail transit vehicle.

[0010] Preferably, four limiting plates are fixedly connected to the side walls on opposite sides of the two mounting brackets.

[0011] Preferably, the ventilation and heat dissipation structure includes a vent, a vent pipe, and a heat-conducting plate. The vent pipe is fixedly connected at equal intervals to the side wall of the DC surge arrester housing. The two ends of the vent pipe are flush with the side walls of the front and back of the DC surge arrester housing. Annular heat-conducting plates are fixedly connected at equal intervals to the side wall of the vent pipe. A vent is fixedly connected to the end of the vent pipe located on the front of the DC surge arrester housing.

[0012] In this technical solution, the flowing air enters the ventilation duct through the ventilation nozzle. Both the ventilation duct and the heat-conducting plate are made of materials with good thermal conductivity. The annular heat-conducting plate on the ventilation duct transfers the temperature inside the DC surge arrester box to the ventilation duct. The ventilation duct exchanges heat with the flowing air inside, effectively removing the temperature inside the DC surge arrester box and effectively dissipating heat from the inside of the DC surge arrester box.

[0013] Preferably, the sidewall of the vent is circular and expands outward.

[0014] In this technical solution, the circularly enlarged vent nozzle allows the flowing air to enter the ventilation duct more effectively.

[0015] Preferably, the ventilation ducts are evenly distributed on both sides of the DC surge arrester.

[0016] Preferably, the cleaning structure includes a fixing ring, connecting rod 2, connecting ring and wiping block. The wiping block is fixedly connected to the outer side wall of the connecting ring. The connecting ring and the wiping block are slidably connected to the inner side wall of the ventilation pipe. Four connecting rod 2 are fixedly connected at equal intervals on the side wall of the connecting ring. The other end of the four connecting rod 2 is fixedly connected to the fixing ring.

[0017] In this technical solution, the movement of the fixed ring causes the second connecting rod to move, the second connecting rod causes the connecting ring to move, and the connecting ring causes the wiping block to move.

[0018] Preferably, the sidewall of the wiping block is attached to the inner sidewall of the ventilation duct.

[0019] In this technical solution, the wiping block wipes and cleans the inner wall of the ventilation duct during its movement, preventing dust from affecting the heat dissipation of the ventilation duct.

[0020] Preferably, the pushing structure includes a connecting plate, a connecting rod, a moving plate, a sliding plate, a fixed plate, and an electric push rod. The fixed plate is fixedly connected to the top side wall of the DC surge arrester housing. The electric push rod is fixedly connected to the side wall of the fixed plate. The other end of the electric push rod is fixedly connected to the moving plate. The top side wall of the moving plate is fixedly connected to the sliding plate, which is slidably connected within the limiting plate. The bottom side wall of the moving plate is fixedly connected to the connecting plate. The connecting rods are fixedly connected at equal intervals on both sides of the connecting plate. The other end of the connecting rods is fixedly connected to the side wall of the fixing ring.

[0021] In this technical solution, the electric push rod extends to push the moving plate to move, the moving plate drives the sliding plate and the connecting plate to move, the sliding plate slides within the limiting plate, the moving connecting plate drives the first connecting rod to move, and the first connecting rod drives the fixed ring to move.

[0022] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0023] The positive and progressive effects of this utility model are as follows: 1. As the DC surge arrester housing moves with the operation of the rail vehicle, some of the flowing air enters the ventilation duct through the ventilation nozzle. The annular heat-conducting fins on the ventilation duct transfer the temperature inside the DC surge arrester housing to the ventilation duct. The ventilation duct exchanges heat with the air flowing inside, effectively removing the temperature inside the DC surge arrester housing. This facilitates better heat dissipation inside the DC surge arrester housing and prevents high temperatures from affecting the service life of the DC surge arrester.

[0024] 2. The electric push rod extends to push the moving plate, which in turn moves the connecting plate. The moving plate then moves the connecting rod, which in turn moves the fixing ring. The fixing ring then moves the wiping block. During this movement, the wiping block wipes and cleans the inner wall of the ventilation duct, which facilitates better cleaning of the inner wall of the ventilation duct and prevents dust from affecting the heat dissipation of the ventilation duct. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0026] Figure 2 This is a schematic diagram of the overall internal three-dimensional structure of this utility model.

[0027] Figure 3 This is a schematic diagram of the overall back structure of this utility model.

[0028] Figure 4 This is a schematic diagram of the overall internal structure of this utility model.

[0029] Figure 5 This is a three-dimensional structural diagram of the ventilation and heat dissipation structure of this utility model.

[0030] Figure 6 This is a three-dimensional structural diagram of the cleaning structure of this utility model.

[0031] Figure 7 This is a three-dimensional structural diagram of the pushing structure of this utility model.

[0032] Explanation of reference numerals in the attached figures 1. DC surge arrester housing; 2. Mounting bracket; 3. Mounting hole; 4. Limiting plate; 5. Ventilation and heat dissipation structure; 501. Ventilation nozzle; 502. Ventilation pipe; 503. Heat-conducting plate; 6. DC surge arrester; 7. Pushing structure; 701. Connecting plate; 702. Connecting rod one; 703. Moving plate; 704. Sliding plate; 705. Fixing plate; 706. Electric push rod; 8. Cleaning structure; 801. Fixing ring; 802. Connecting rod two; 803. Connecting ring; 804. Wiping block. Detailed Implementation

[0033] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0034] like Figure 1-7 As shown, the DC surge arrester box includes a DC surge arrester box housing 1, and also includes: Ventilation and heat dissipation structure 5 is installed on the housing 1 of the DC surge arrester box; Cleaning structure 8 is disposed within ventilation and heat dissipation structure 5; The pushing structure 7 is located on the back of the DC surge arrester housing 1. The movement of the pushing structure 7 drives the cleaning structure 8 to move and clean the ventilation and heat dissipation structure 5.

[0035] A DC surge arrester 6 is fixedly installed in the middle of the inner side wall of the DC surge arrester box 1.

[0036] Two "L"-shaped mounting brackets 2 are fixedly connected to the top side wall of the DC lightning arrester housing 1, and mounting holes 3 are provided on the side wall of the horizontal plate of the mounting bracket 2.

[0037] By passing the fixing bolt through the mounting hole 3, the mounting bracket 2 can be fixedly installed on the bottom of the rail transit vehicle, thereby fixing the DC surge arrester 6 on the bottom of the rail transit vehicle.

[0038] Four limiting plates 4 are fixedly connected to the side walls on opposite sides of the two mounting brackets 2.

[0039] The ventilation and heat dissipation structure 5 includes a vent 501, a ventilation pipe 502, and a heat-conducting plate 503. The ventilation pipe 502 is fixedly connected at equal intervals to the side wall of the DC surge arrester housing 1. The two ends of the ventilation pipe 502 are flush with the side walls of the front and back of the DC surge arrester housing 1. Annular heat-conducting plates 503 are fixedly connected at equal intervals to the side wall of the ventilation pipe 502. The end of the ventilation pipe 502 located on the front of the DC surge arrester housing 1 is fixedly connected to the vent vent 501.

[0040] The flowing air enters the ventilation duct 502 through the vent 501. Both the ventilation duct 502 and the heat-conducting plate 503 are made of materials with good thermal conductivity. The annular heat-conducting plate 503 on the ventilation duct 502 transfers the temperature inside the DC surge arrester box 1 to the ventilation duct 502. The ventilation duct 502 exchanges heat with the flowing air inside, effectively removing the temperature inside the DC surge arrester box 1 and effectively dissipating heat from the inside of the DC surge arrester box 1.

[0041] The sidewall of the vent 501 is circular and expands outward.

[0042] The circularly enlarged vent 501 allows the flowing air to enter the ventilation duct 502 more effectively.

[0043] The ventilation ducts 502 are evenly distributed on both sides of the DC surge arrester 6.

[0044] The cleaning structure 8 includes a fixing ring 801, a connecting rod 802, a connecting ring 803, and a wiping block 804. The wiping block 804 is fixedly connected to the outer side wall of the connecting ring 803. The connecting ring 803 and the wiping block 804 are slidably connected to the inner side wall of the ventilation pipe 502. Four connecting rods 802 are fixedly connected at equal intervals to the side wall of the connecting ring 803. The other end of the four connecting rods 802 is fixedly connected to the fixing ring 801.

[0045] The movement of the fixed ring 801 causes the second connecting rod 802 to move, the second connecting rod 802 causes the connecting ring 803 to move, and the connecting ring 803 causes the wiping block 804 to move.

[0046] The sidewall of the wiping block 804 is attached to the inner sidewall of the ventilation duct 502.

[0047] The wiping block 804 wipes and cleans the inner wall of the ventilation duct 502 during movement to prevent dust from affecting the heat dissipation of the ventilation duct 502.

[0048] The pushing structure 7 includes a connecting plate 701, a connecting rod 702, a moving plate 703, a sliding plate 704, a fixed plate 705, and an electric push rod 706. The fixed plate 705 is fixedly connected to the top side wall of the DC surge arrester housing 1. The electric push rod 706 is fixedly connected to the side wall of the fixed plate 705. The other end of the electric push rod 706 is fixedly connected to the moving plate 703. The sliding plate 704 is fixedly connected to the top side wall of the moving plate 703. The sliding plate 704 is slidably connected within the limiting plate 4. The connecting plate 701 is fixedly connected to the bottom side wall of the moving plate 703. The connecting rod 702 is fixedly connected at equal intervals to the side walls on both sides of the connecting plate 701. The other end of the connecting rod 702 is fixedly connected to the side wall of the fixing ring 801.

[0049] The electric push rod 706 extends to push the moving plate 703 to move. The moving plate 703 drives the sliding plate 704 and the connecting plate 701 to move. The sliding plate 704 slides within the limiting plate 4. The movement of the connecting plate 701 drives the first connecting rod 702 to move. The first connecting rod 702 drives the fixed ring 801 to move.

[0050] In use, all electrical components mentioned in this application are connected to an external power supply and control switch. By passing the fixing bolt through the mounting hole 3, the mounting bracket 2 can be fixedly installed on the bottom of the rail transit vehicle, thereby fixing the DC surge arrester 6 on the bottom of the rail transit vehicle. The DC surge arrester box housing 1 surrounds the outside of the DC surge arrester 6. When the vehicle is running, stones that bounce off the ground and the track will hit the DC surge arrester box housing 1 without damaging the DC surge arrester 6 inside, thus providing better protection for the DC surge arrester 6 inside. The DC surge arrester housing 1 moves as the rail vehicle runs. During this movement, some of the flowing air enters the ventilation pipe 502 through the ventilation nozzle 501. Both the ventilation pipe 502 and the heat-conducting plate 503 are made of materials with good thermal conductivity. The annular heat-conducting plate 503 on the ventilation pipe 502 transfers the temperature inside the DC surge arrester housing 1 to the ventilation pipe 502. The ventilation pipe 502 exchanges heat with the flowing air inside, effectively removing the temperature inside the DC surge arrester housing 1 and effectively dissipating heat from the inside of the DC surge arrester housing 1, thus preventing high temperatures from affecting the service life of the DC surge arrester 6. When dust adheres to the inner wall of the ventilation duct 502, affecting heat dissipation, the electric push rod 706 extends to push the moving plate 703 to move. The moving plate 703 drives the sliding plate 704 and the connecting plate 701 to move. The sliding plate 704 slides within the limiting plate 4. The movement of the connecting plate 701 drives the first connecting rod 702 to move. The first connecting rod 702 drives the fixing ring 801 to move. The fixing ring 801 drives the second connecting rod 802 to move. The second connecting rod 802 drives the connecting ring 803 to move. The connecting ring 803 drives the wiping block 804 to move. During the movement, the wiping block 804 wipes and cleans the inner wall of the ventilation duct 502, which facilitates better cleaning of the inner wall of the ventilation duct 502 and prevents dust from affecting the heat dissipation of the ventilation duct 502.

[0051] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A DC surge arrester box, comprising a DC surge arrester box housing (1), characterized in that, Also includes: Ventilation and heat dissipation structure (5), wherein the ventilation and heat dissipation structure (5) is installed on the housing (1) of the DC surge arrester box; Cleaning structure (8), the cleaning structure (8) is set inside the ventilation and heat dissipation structure (5); The pushing structure (7) is located on the back of the DC lightning arrester housing (1). The pushing structure (7) moves to drive the cleaning structure (8) to clean the ventilation and heat dissipation structure (5).

2. The DC surge arrester box as described in claim 1, characterized in that: A DC surge arrester (6) is fixedly installed in the middle of the inner wall of the DC surge arrester housing (1).

3. The DC surge arrester box as described in claim 1, characterized in that: Two "L"-shaped mounting brackets (2) are fixedly connected to the top side wall of the DC lightning arrester housing (1), and mounting holes (3) are provided on the side wall of the horizontal plate of the mounting bracket (2).

4. The DC surge arrester box as described in claim 3, characterized in that: Four limiting plates (4) are fixedly connected to the side walls on opposite sides of the two mounting brackets (2).

5. The DC surge arrester box as described in claim 1, characterized in that: The ventilation and heat dissipation structure (5) includes a vent (501), a ventilation pipe (502), and a heat-conducting plate (503). The ventilation pipe (502) is fixedly connected at equal intervals to the side wall of the DC lightning arrester housing (1). The two ends of the ventilation pipe (502) are flush with the side walls of the front and back of the DC lightning arrester housing (1). Annular heat-conducting plates (503) are fixedly connected at equal intervals on the side wall of the ventilation pipe (502). The ventilation vent (501) is fixedly connected to the end of the ventilation pipe (502) located on the front of the DC lightning arrester housing (1).

6. The DC surge arrester box as described in claim 5, characterized in that: The sidewall of the vent (501) is circular and expands outward.

7. The DC surge arrester box as described in claim 6, characterized in that: The ventilation pipes (502) are evenly distributed on both sides of the DC surge arrester (6).

8. The DC surge arrester box as described in claim 1, characterized in that: The cleaning structure (8) includes a fixing ring (801), a connecting rod (802), a connecting ring (803), and a wiping block (804). The wiping block (804) is fixedly connected to the outer side wall of the connecting ring (803). The connecting ring (803) and the wiping block (804) are slidably connected to the inner side wall of the ventilation pipe (502). Four connecting rods (802) are fixedly connected at equal intervals on the side wall of the connecting ring (803). The other end of the four connecting rods (802) is fixedly connected to the fixing ring (801).

9. The DC surge arrester box as described in claim 8, characterized in that: The sidewall of the wiping block (804) is attached to the inner sidewall of the ventilation pipe (502).

10. The DC surge arrester box as described in claim 1, characterized in that: The pushing structure (7) includes a connecting plate (701), a connecting rod (702), a moving plate (703), a sliding plate (704), a fixed plate (705), and an electric push rod (706). The fixed plate (705) is fixedly connected to the top side wall of the DC lightning arrester housing (1). The electric push rod (706) is fixedly connected to the side wall of the fixed plate (705). The other end of the electric push rod (706) is fixedly connected to the moving plate (703). The sliding plate (704) is fixedly connected to the top side wall of the moving plate (703). The sliding plate (704) is slidably connected inside the limiting plate (4). The connecting plate (701) is fixedly connected to the bottom side wall of the moving plate (703). The connecting rod (702) is fixedly connected at equal intervals to the side walls on both sides of the connecting plate (701). The other end of the connecting rod (702) is fixedly connected to the side wall of the fixing ring (801).

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