Heat dissipation shell for current transformer

Abstract

The utility model discloses a heat dissipation shell for a current transformer, and relates to the technical field of electric power systems. The shell comprises a shell body, the two sides of the top of the shell body are each provided with an independent wiring assembly, each wiring assembly comprises a wiring pile, the wiring pile is further provided with a first threading hole, the interior of the wiring pile is in threaded connection with a wiring column, an outer cylinder is slidably inserted into the outer wall of the wiring pile, the outer cylinder is provided with a second threading hole, and a rotating cylinder is further provided with a third threading hole. A heat dissipation assembly is further installed on the central axis of the top of the shell body, the heat dissipation assembly comprises a heat dissipation box and a heat dissipation piece installed at the bottom of the inner side of the heat dissipation box, and dust screens are inserted into air grooves in the two sides of the heat dissipation box in a penetrating mode. According to the current transformer, the effective insulation effect can be achieved through the wiring assembly, meanwhile, the wiring head can be shielded and protected to be prevented from being exposed, heat in the current transformer can be discharged out of the shell through the heat dissipation assembly, and external ash and rainwater can be prevented from entering the current transformer.

Description

Technical Field

[0001] The utility model belongs to the technical field of power systems, and in particular relates to a heat dissipation shell for a current transformer. Background Art

[0002] Current transformer is one of the most common measuring instruments in power systems. It can not only be used to detect high currents, but also to protect circuits by converting high currents into low currents. The current transformer is mainly composed of four parts: conductive column, mutual inductance coil, frame and shell. The shell is used to protect all structures, while the mutual inductance coil is wound on the frame, and the conductive column is used to connect to the circuit that needs to be detected.

[0003] A Chinese patent application (or patent) with publication number CN220691805U discloses an aluminum alloy current transformer housing for a high-voltage switch. The utility model includes a housing, the bottom of which is detachably connected to a mounting plate. The mounting plate is provided with a mounting hole and a fixing hole, and a locking mechanism is provided within the mounting hole. The utility model provides a locking mechanism. When the housing is first installed, the slot at the bottom of the housing can be aligned with the mounting hole. Then, the insertion rod and the locking rod can be aligned with the slot and the arc groove and inserted. During the insertion process, the insertion rod begins to rotate, and the locking rod slides to the end of the arc groove. At this time, it is pushed into the retraction groove by a first spring, allowing the insertion rod to be fixed and locked. After long-term use, when the housing needs to be repaired, the above-mentioned arrangement can achieve the purpose of quickly installing or removing the housing, thereby achieving better practicality.

[0004] The aluminum alloy current transformer housing for the high-voltage switch is a closed structure made of aluminum alloy. Although aluminum alloy has good thermal conductivity, the high temperature generated by the current transformer during operation is much greater than the thermal conductivity of the housing. Therefore, the closed structure will cause heat to accumulate inside. In addition, the top and sides of the housing are also equipped with terminals for connecting to high-voltage wires. At the same time, the outer side of the arm of the terminal is also wrapped with a pipe sleeve. Therefore, when the terminal is connected to the high-voltage wire, the pipe sleeve cannot cover the connection terminal, which makes the connection terminal exposed and extremely dangerous. To this end, we provide a heat dissipation housing for current transformers to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a heat dissipation housing for a current transformer. By utilizing a wiring assembly, it can not only achieve an effective insulation effect, but also shield and protect the wiring head to avoid exposure. At the same time, the heat dissipation assembly can not only discharge the heat in the current transformer out of the housing, but also prevent external ash and rainwater from entering therein, thereby solving the problems of existing aluminum alloy current transformer housings for high-voltage switches.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is a heat dissipation housing for a current transformer, comprising a shell body; an independent wiring assembly is installed on both sides of the top of the shell body, the wiring assembly includes a wiring post and a mounting post bonded to the bottom thereof, the wiring post is further provided with a first threading hole, the internal thread of the wiring post is connected to the wiring post, an outer cylinder is slidably inserted on the outer wall of the wiring post, and the outer cylinder is provided with a second threading hole, an inner groove for matching with a rotating cylinder is further provided in the side wall of the outer cylinder, a ruler ring is bonded to one end of the rotating cylinder, and the rotating cylinder is further provided with a third threading hole;

[0008] A heat dissipation component is also installed on the top central axis of the shell body, and the heat dissipation component includes a heat dissipation box and a heat dissipation part installed on the inner bottom thereof. Dustproof nets are inserted in the air grooves on both sides of the heat dissipation box, and a shielding box is installed on the outside of the air groove. The heat dissipation part includes an equipment tube and a motor installed inside it. The shaft end of the motor is installed with a fan blade. At the same time, the shaft side end of the motor is connected to the equipment tube through a fixing frame. The outer wall of the equipment tube is clamped with a card plate, and the equipment tube is connected to the elastic rod through the card plate.

[0009] The utility model is further configured such that mounting holes are provided at both ends of the top of the shell body, and the shell body is threadedly connected to the terminal post through the mounting holes; a card slot is provided on the bottom side wall of the shell body, and the shell body is card-connected to the body of the current transformer through the card slot.

[0010] The utility model is further configured such that a top groove is provided on the top inner wall of the shell body, and a notch is provided on the central axis of the top groove; a fixing frame is welded on the top outer wall of the shell body corresponding to the top groove, and the shell body is clamped with the bottom of the heat dissipation box through the fixing frame.

[0011] The utility model is further configured such that a slide groove is provided on the outer wall of the terminal pile, and there are two slide grooves in total, which are arranged opposite to each other, and the two slide grooves and the two wire threading holes are respectively arranged at the four quadrant points of the terminal pile.

[0012] The utility model is further configured such that the terminal post is slidably connected to the slide bar through a slide groove, and the slide bar is adhered to the inner wall of the outer tube, the inner wall of the outer tube cooperates with the outer wall of the terminal post, and the two slide bars and the two threading holes are respectively arranged at the four quadrant points of the outer tube.

[0013] The utility model is further configured such that the rotating drum is connected to the threaded inner groove on the outer drum through the ruler ring at the bottom, and the inner wall of the inner groove cooperates with the inner wall of the rotating drum, and a pull ring is also bonded to the outer wall of the end of the rotating drum.

[0014] The utility model is further configured such that the heat dissipation box is a hollow bottomless isosceles trapezoidal box structure, and air grooves arranged at equal intervals are opened on the side walls of the waistline on both sides of the heat dissipation box, and each of the air grooves is correspondingly provided with a shielding box.

[0015] The utility model is further configured such that a mounting plate is clamped on the bottom of the heat dissipation box, and the heat dissipation box is connected to the heat dissipation element through the mounting plate, and three heat dissipation elements are arranged on the mounting plate at equal intervals, and clamping plates are provided at both ends of the elastic rod on the heat dissipation element, and the two clamping plates are respectively clamped with the inner wall of the circular hole on the mounting plate and the outer wall of the equipment tube.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model sets a wiring assembly. The ceramic wiring assembly can not only meet the wiring work of high-voltage wires, but also the three locking structures cooperate with each other to better protect the wiring terminals, avoid exposure, prevent others from accidentally touching them, and also play an effective insulation effect.

[0018] 2. The utility model provides a heat dissipation component, which is mounted on the top central axis of the current transformer, so that the high-temperature waste heat retained in it can be conducted into the heat dissipation box, and then the heat is directed and discharged from the shell through the action of the heat dissipation member. At the same time, the dustproof net on the heat dissipation box can effectively prevent dust, and the shielding box can block rain, and finally prevent rain and dust from the outside from entering the inside of the shell body.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The figure is a structural schematic diagram of a heat dissipation housing for a current transformer.

[0022] Figure 2 The figure is a half-section diagram of the structure of a heat dissipation shell for a current transformer.

[0023] Figure 3 This is a structural disassembly diagram of a heat dissipation housing for a current transformer.

[0024] Figure 4 It is the bottom view of the structure of the shell body.

[0025] Figure 5 This is a disassembled diagram of the wiring assembly structure.

[0026] Figure 6 This is a disassembled diagram of the heat dissipation component.

[0027] Figure 7 This is a disassembled diagram of the heat sink structure.

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 1- Shell body, 101- Mounting hole, 102- Fixing frame, 103- Card slot, 104- Top slot, 2- Wiring assembly, 201- Wiring post, 201a- Mounting column, 201b- Slide slot, 201c- Threading hole one, 202- Wiring post, 203- Outer cylinder, 203a- Threading hole two, 203b- Slide bar, 203c- Inner groove, 204- Rotating cylinder, 204a- Threading hole three, 204b- Pull ring, 204c- Ruler ring, 3- Heat dissipation assembly, 301- Heat dissipation box, 301a- Air groove, 301b- Dustproof net, 301c- Shielding box, 301d- Mounting plate, 302- Heat dissipation part, 302a- Equipment cylinder, 302b- Motor, 302c- Fan blade, 302d- Fixing bracket, 302e- Elastic rod, 302f- Card plate. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Specific embodiment 1

[0032] See also Figure 1-5The utility model is a heat dissipation shell for a current transformer, comprising a shell body 1 and wiring assemblies 2 installed on both sides of the top thereof, the wiring assembly 2 comprises a wiring post 201 and a wiring post 202 threadedly connected at the center thereof, and at the same time, an outer cylinder 203 is slidably inserted into the outer side of the wiring post 201, and a rotating cylinder 204 is sleeved and threadedly connected to the outer cylinder 203, so that when performing wiring work on high-voltage wires, the wiring post 201, the outer cylinder 203 and the rotating cylinder 204 need to cooperate, so that the high-voltage wires can be clamped and positioned at the same time, the exposed wire ends are placed on the inner side of the outer cylinder 203.

[0033] Specifically, a terminal post 201a is bonded to the bottom side wall of the terminal post 201 in the terminal assembly 2, and a sliding groove 201b for sliding connection with the sliding bar 203b is provided on the outer wall of the terminal post 201, and a threading hole 201c is provided between the sliding grooves 201b, wherein the sliding bar 203b is bonded to the inner side wall of the outer cylinder 203, and a threading hole 203a is also provided on the outer wall of the outer cylinder 203. At the same time, an inner groove 203c for cooperating with the rotating cylinder 204 is also provided inside the outer cylinder 203, a threading hole 204a is provided on the rotating cylinder 204, and a pull ring 204b is bonded to the top of the rotating cylinder 204, and a ruler ring 204c is bonded to the other end of the rotating cylinder 204.

[0034] Furthermore, mounting holes 101 for cooperating with the mounting posts 201a are provided on both sides of the top of the shell body 1. At the same time, a slot 103 for clamping the current transformer body is also provided at the bottom of the shell body 1. The ruler ring 204c is threadedly connected to the inner groove 203c, and the terminal post 201, the outer cylinder 203 and the rotating cylinder 204 are all made of ceramic material.

[0035] The operation process of this embodiment is: first, hold the pull ring 204b and rotate the rotating drum 204 so that the wire threading hole 3 204a on it is aligned with the wire threading hole 2 203a on the outer cylinder 203, and then, pull the pull ring 204b up and down again to pull the combination of the rotating drum 204 and the outer cylinder 203 to slide on the terminal post 201, and adjust the wire threading hole 203a to align with the wire threading hole 1 201c while sliding, so that the three wire threading holes are superimposed on each other, and the high-voltage wire can be inserted into the wire threading hole and the wire end can be wrapped around the terminal post 202, and then the above-mentioned steps of the terminal post 201, outer cylinder 203 and rotating drum 204 can be reversed. Specific embodiment 2

[0037] See also Figure 6-7On the basis of the first specific embodiment, a heat dissipation component 3 is further provided. The heat dissipation component 3 is installed on the top central axis of the shell body 1. The heat dissipation component 3 includes a heat dissipation box 301 and a heat dissipation member 302 installed on the bottom side thereof. The heat dissipation member 302 can quickly draw the residual heat in the shell body 1 to the top of the heat dissipation member 302, and discharge it to the outside of the heat dissipation box 301 through the dustproof net 301b.

[0038] Specifically, air grooves 301a are provided on the waistlines on both sides of the heat dissipation box 301 in the heat dissipation assembly 3, and dustproof nets 301b are inserted into the air grooves 301a, and a shielding box 301c is bonded to the outside of the air grooves 301a, and a mounting plate 301d for installing the heat dissipation element 302 is clamped on the bottom side wall of the heat dissipation box 301, wherein the heat dissipation element 302 includes a device tube 302a, and a motor 302b is also installed inside the device tube 302a, and a fan blade 302c is installed at the shaft end of the motor 303b, and its shaft end is connected to the fixing frame 302d through a bearing, and the fixing frame 302d is clamped on the top of the device tube 302a, and a combination of an elastic column 302e and a card plate 302f is also provided on the outside of the device tube 302a.

[0039] Furthermore, a top groove 104 is provided on the top inner wall of the shell body 1, and a fixing frame 102 for clamping the heat dissipation box 301 is provided in the upper side wall of the shell body 1 corresponding to the top groove 104. The heat dissipation box 301 is arranged in a hollow bottomless isosceles trapezoidal structure. Three equally spaced circular holes are provided on the mounting plate 301d, and a heat dissipation member 302 is provided in each circular hole. The clamping plates 302f are respectively provided at the two ends of the elastic column 302e, and the two ends of the elastic column 302e are respectively clamped to the inner side wall of the circular hole of the mounting plate 301d and the outer side wall of the equipment tube 302a through a clamping plate 302f.

[0040] The operating process of this embodiment is as follows: the high heat generated by the current transformer will be accumulated in the top groove 104 at the top of the shell body 1, and enter the heat dissipation box 301 through the notch on the top groove 104, and then the motor 302b in the heat dissipation element 302 will work, driving the fan blades 302c on its shaft end to rotate, so that the heat below it is drawn into the top of the heat dissipation element 302, and because air grooves 301a are provided on the waistline side walls on both sides of the heat dissipation box 301 on the upper side of the heat dissipation element 302, this part of the heat will enter the shielding box 301c through the air grooves 301a and be discharged to the outside of the heat dissipation box 301, wherein the dustproof net 301b has a dustproof effect, and the notch of the shielding box 301c is inclined downward, so it can effectively prevent rainwater.

[0041] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0042] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A heat dissipation housing for a current transformer, comprising a housing body (1); characterized in that: An independent wiring assembly (2) is installed on both sides of the top of the shell body (1), and the wiring assembly (2) includes a wiring post (201) and a mounting post (201a) bonded to the bottom thereof, the wiring post (201) is further provided with a first threading hole (201c), the internal thread of the wiring post (201) is connected to the wiring post (202), an outer cylinder (203) is slidably plugged into the outer wall of the wiring post (201), and the outer cylinder (203) is provided with a second threading hole (203a), an inner groove (203c) for matching with a rotating cylinder (204) is further provided in the side wall of the outer cylinder (203), and a ruler ring (204c) is bonded to one end of the rotating cylinder (204), and the rotating cylinder (204) is further provided with a third threading hole (204a); A heat dissipation assembly (3) is also installed on the top central axis of the housing body (1), and the heat dissipation assembly (3) includes a heat dissipation box (301) and a heat dissipation element (302) installed on the inner bottom thereof. Dustproof nets (301b) are inserted into the air grooves (301a) on both sides of the heat dissipation box (301), and a shielding box (301c) is installed on the outside of the air groove (301a). The heat dissipation element (302) includes a device cylinder (301). 2a), and a motor (302b) installed therein, wherein a fan blade (302c) is installed at the shaft end of the motor (302b), and at the same time, the shaft side end of the motor (302b) is connected to the device cylinder (302a) through a fixing frame (302d), and a clamping plate (302f) is provided on the outer wall of the device cylinder (302a), and the device cylinder (302a) is connected to the elastic rod (302e) through the clamping plate (302f).

2. The heat dissipation housing for a current transformer according to claim 1, characterized in that: Mounting holes (101) are provided at both ends of the top of the shell body (1), and the shell body (1) is threadedly connected to the terminal post (201a) through the mounting holes (101); a clamping slot (103) is provided on the bottom side wall of the shell body (1), and the shell body (1) is clamped to the body of the current transformer through the clamping slot (103).

3. The heat dissipation housing for a current transformer according to claim 1, characterized in that: A top groove (104) is provided on the top inner wall of the shell body (1), and a notch is provided on the central axis of the top groove (104); a fixing frame (102) is welded on the top outer wall of the shell body (1) corresponding to the top groove (104), and the shell body (1) is clamped to the bottom of the heat dissipation box (301) through the fixing frame (102).

4. The heat dissipation housing for a current transformer according to claim 1, characterized in that: A sliding groove (201b) is provided on the outer wall of the wiring pile (201), and there are two sliding grooves (201b) in total, and the two sliding grooves (201b) are arranged opposite to each other. The two sliding grooves (201b) and the two threading holes (201c) are respectively arranged at four quadrant points of the wiring pile (201).

5. The heat dissipation housing for a current transformer according to claim 4, characterized in that: The terminal post (201) is slidably connected to the slide bar (203b) via the slide groove (201b), and the slide bar (203b) is adhered to the inner wall of the outer cylinder (203), the inner wall of the outer cylinder (203) cooperates with the outer wall of the terminal post (201), and the two slide bars (203b) and the two threading holes (203a) are respectively arranged at four quadrant points of the outer cylinder (203).

6. The heat dissipation housing for a current transformer according to claim 1, characterized in that: The rotating cylinder (204) is connected to the inner groove (203c) on the outer cylinder (203) through a threaded connection via a grooved ring (204c) at the bottom, and the inner wall of the inner groove (203c) matches the inner wall of the rotating cylinder (204). A pull ring (204b) is also bonded to the outer wall of the end of the rotating cylinder (204).

7. The heat dissipation housing for a current transformer according to claim 1, characterized in that: The heat dissipation box (301) is arranged in a hollow bottomless isosceles trapezoidal box structure, and air grooves (301a) arranged at equal intervals are opened on the side walls of the waistline on both sides of the heat dissipation box (301), and each of the air grooves (301a) is correspondingly provided with a shielding box (301c).

8. The heat dissipation housing for a current transformer according to claim 1, characterized in that: The bottom of the heat dissipation box (301) is clamped with a mounting plate (301d), and the heat dissipation box (301) is connected to the heat dissipation element (302) via the mounting plate (301d). Three heat dissipation elements (302) are arranged at equal intervals on the mounting plate (301d). Both ends of the elastic rod (302e) on the heat dissipation element (302) are provided with clamping plates (302f), and the two clamping plates (302f) are clamped with the inner wall of the circular hole on the mounting plate (301d) and the outer wall of the equipment cylinder (302a), respectively.

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