Double-deck hollow fence type jp cabinet

Abstract

The utility model discloses a double -deck hollow fence formula structure's JP cabinet, including top cabinet body, bottom plate, left cabinet body, right cabinet body. Top cabinet body includes outer top plate and inner deflector, and the top surface of outer top plate is not opened hole, and the four lateral surfaces of outer top plate are provided with grating air vent, and is provided with the air vent on the inner deflector, left cabinet body includes left outer side board and left inner side board, and is provided with grating air vent on the upper half portion of left inner side board and installs axial flow fan, and grating air vent is opened in the air outlet portion of axial flow fan in the upper half portion of left outer side board, and grating air vent is provided on the bottom plate, and the inner deflector is connected with the left inner side board of left side and the right inner side board of right side, and forms the clearance of hollow with the peripheral cabinet body. Through double -deck hollow interlayer + top grating formula deflector design, constructs efficient self -circulation air duct, reduces internal temperature fluctuation, reduces the dependence on external forced heat dissipation, solves the problem of temperature rise of JP cabinet and leads to the structure heat dissipation deficiency and results in the problem of temperature rise.

Description

Technical Field

[0001] This utility model relates to the field of power distribution equipment manufacturing technology, and in particular to a JP cabinet with a double-layer hollow fence structure. Background Technology

[0002] JP cabinet is short for intelligent low-voltage integrated distribution box. As we all know, if the temperature rise of the State Grid JP cabinet is too high, it will lead to a shortened life of components (the life of insulation material is halved for every 10°C exceeding the limit), accelerated oxidation of contacts (when the temperature inside the JP cabinet is >80°C, the contact resistance surges), and even cause safety accidents such as insulation breakdown.

[0003] Chinese Patent Publication (Announcement) No.: CN208046033U, Patent Title: Integrated Distribution Box. This type of traditional JP cabinet often adopts a single-layer side panel + single-layer top structure, with ventilation relying on a unidirectional airflow design of bottom air intake and top fan extraction. The limited area of ​​the heat dissipation holes (typically occupying 10%-15% of the side area) and the tight fit of the side panels without air gaps lead to: 1. Low heat dissipation efficiency: In hot weather, external hot air mixes with the hot airflow inside the cabinet, resulting in low heat exchange efficiency. 2. Top heat accumulation: Hot air accumulates at the top due to its low density, but the single-layer top structure cannot effectively guide the airflow, forming a localized high-temperature zone (measured temperature rise inside the cabinet exceeds the ambient temperature by more than 10K), requiring high-power cooling equipment: some solutions use air conditioning or forced air cooling, but these consume high energy and have strict sealing requirements, easily leading to resource waste. Utility Model Content

[0004] The purpose of this utility model is to provide a JP cabinet with a double-layer hollow fence structure to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical measures: a double-layer hollow grid-type cabinet, including a top cabinet at the top, a bottom plate at the bottom, a left cabinet on the left, and a right cabinet on the right. Its features are: the top cabinet includes an outer top plate on the periphery and an inner guide plate on the inner layer; the top surface of the outer top plate is not perforated, and the four sides of the outer top plate are provided with grid ventilation holes; the inner guide plate is provided with ventilation holes; the left cabinet includes a left outer side plate on the periphery and a left inner side plate on the inner layer; an axial flow fan for extracting hot air from the cabinet is installed on the upper half of the left inner side plate, and a grid ventilation hole is opened on the upper half of the left outer side plate corresponding to the air outlet of the axial flow fan; the bottom plate is provided with a grid ventilation hole for introducing cold air; the inner guide plate is connected to the left inner side plate on the left and the right inner side plate on the right, forming a hollow gap with the outer cabinet; a cable inlet pipe and a cable outlet pipe are provided on the left cabinet.

[0006] Compared with the existing technology, the advantages of this utility model are: by constructing a high-efficiency self-circulating air duct through a double-layer hollow sandwich layer and a top grid-type air guide design, the internal temperature fluctuation is reduced, the dependence on external forced heat dissipation is reduced, and the problem of excessive temperature rise caused by insufficient heat dissipation of the JP cabinet is solved.

[0007] As an improvement to this utility model, the spacing between the left inner panel and the left outer panel is between 0.5 and 0.8 cm, forming a hollow air gap. The purpose of this design is that, since air is a poor conductor of heat with a thermal conductivity much lower than that of metals or solid materials, the heat conduction speed of a double-layer cabinet with a hollow structure is significantly reduced compared to a single-layer cabinet.

[0008] As an improvement of this utility model, the four sides of the outer top plate are provided with grille ventilation holes, the transparency of which is between 30% and 50%. The purpose of this design is: since the outer top plate is located at the top and does not need to bear weight, the transparency of the grille ventilation holes is set to a high value, between 30% and 50%.

[0009] As an improvement of this utility model, the ventilation holes in the grille on the base plate have a permeability between 20% and 30%. The purpose of this design is that, since the base plate is located at the bottom and needs to bear a certain load, the permeability of the grille ventilation holes is chosen to be low, between 20% and 30%.

[0010] As an improvement to this utility model, the cable inlet pipe has the same structure as the cable outlet pipe, and its shape is an arc-shaped elbow. The purpose of this design is that the arc-shaped elbow can ensure smooth cable routing. Attached Figure Description

[0011] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0012] In the attached diagram: Figure 1 This is a front view of the JP cabinet described in this utility model.

[0013] Figure 2 This is a schematic diagram of the back of the JP cabinet described in this utility model.

[0014] Figure 3 This is a left view of the JP cabinet described in this utility model.

[0015] Figure 4 This is a right view of the JP cabinet described in this utility model.

[0016] Figure 5 This is an exploded view of the left cabinet body described in this utility model.

[0017] Figure 6 is an exploded view of the top cabinet body of this utility model.

[0018] Figure 7 is a schematic diagram of the base plate described in this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Top cabinet; 2. Bottom plate; 3. Left cabinet; 4. Right cabinet; 5. Outer top plate; 6. Inner guide plate; 7. Grille ventilation hole; 8. Ventilation hole; 9. Left outer side plate; 10. Left inner side plate; 11. Axial flow fan; 12. Cable inlet pipe; 13. Cable outlet pipe; 14. Top bracket; 15. Outlet hole; 16. Inlet hole. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example 1 Please refer to Figure 1 -7.

[0022] This embodiment provides a double-layer hollow fence-type JP cabinet, which is suitable for low-voltage power distribution applications.

[0023] In the embodiments of this utility model application, please refer to Figure 1 and Figure 2 It includes a top cabinet 1 at the top, a bottom plate 2 at the bottom, a left cabinet 3 on the left side, and a right cabinet 4 on the right side, all connected by a top support 14 and a top floor slab.

[0024] In the embodiments of this utility model application, please refer to Figure 6 The top cabinet 1 includes an outer top plate 5 on the periphery and an inner guide plate 6 on the inner layer. The top surface of the outer top plate 5 is not perforated, and the four sides of the outer top plate 5 are provided with grille ventilation holes 7. The inner guide plate 6 is provided with 6 evenly distributed ventilation holes 8.

[0025] In the embodiments of this utility model application, please refer to Figure 5 The left cabinet 3 includes a left outer side panel 9 on the periphery and a left inner side panel 10 on the inner layer. An axial flow fan 11 for extracting hot air from the cabinet is installed on the upper half of the left inner side panel 10. A grille ventilation hole 7 for ventilation is opened on the upper half of the left outer side panel 9 corresponding to the air outlet of the axial flow fan 11. A cable outlet pipe (13) is provided on the lower half of the left outer side panel 9, and correspondingly, an outlet hole (15) is provided on the left inner side panel 9. A cable inlet pipe (12) is provided on the upper half of the left outer side panel 9, and correspondingly, an inlet hole (16) is provided on the left inner side panel 9.

[0026] It should be noted that, please refer to Figure 3 and Figure 4 The structure of the right cabinet 4 is basically the same as that of the left cabinet 3, except that the number of cable inlet pipe (12) and cable outlet pipe (13) is different. Since conventional distribution cabinets have outlet chambers and capacitor chambers, the number of cables is different.

[0027] In the embodiments of this utility model application, please refer to Figure 7 The base plate 2 is provided with grille ventilation holes 7 for cold air intake, with a permeability between 20% and 30%. Since the base plate 2 is located at the bottom and needs to bear a certain load, the permeability of the grille ventilation holes 7 is set to a low value, between 20% and 30%.

[0028] It should be noted that the inner guide plate 6 is connected to the left inner side plate 10 on the left and the right inner side plate on the right, forming a hollow gap with the outer cabinet. This structure, in which the top inner plate and the side plate are connected by a sandwich layer, utilizes the rising effect of hot air to guide airflow.

[0029] Furthermore, the spacing between the left inner panel 10 and the left outer panel 9 is between 0.5 and 0.8 cm, forming a hollow air gap. Since air is a poor conductor of heat, its thermal conductivity is much lower than that of metals or solid materials. Compared with a single-layer cabinet, the heat conduction speed of a double-layer cabinet with a hollow structure is significantly reduced.

[0030] In the embodiments of this utility model application, please refer to Figure 6 The four sides of the outer top plate 5 are provided with grille ventilation holes 7, the transparency of which is between 30% and 50%. Since the outer top plate 5 is located at the top and does not need to bear weight, the transparency of the grille ventilation holes 7 is set to a higher value, between 30% and 50%.

[0031] Further, please refer to Figure 5 The cable inlet pipe and the cable outlet pipe have the same structure, with the shape being an arc-shaped elbow. The arc-shaped elbow helps ensure smooth cable routing.

[0032] The JP cabinet with a double-layer hollow grid structure provided in this embodiment has the following heat dissipation direction during normal use: Cold air injection: Ambient cold air enters the cabinet through the grille ventilation holes 7 on the bottom plate 2.

[0033] Heat absorption: The airflow passes through the components (busbars, circuit breakers, etc.), absorbs heat, and then rises.

[0034] Interlayer airflow: Hot air enters the hollow interlayer between the left cabinet 3 and the right cabinet 4, and is accelerated and discharged by the axial flow fan 11. (Reference) Figure 4There are two axial flow fans on the right cabinet (the lighter lines in the picture), located slightly above the grille ventilation hole 7. They are designed to allow the air between the side panel and the grille ventilation hole 7 to flow, forming an air duct before being discharged.

[0035] Enhanced heat dissipation at the top: Residual hot air is diffused and discharged through the grille ventilation holes 7 of the outer top plate 5, preventing heat accumulation at the top.

[0036] The technological advantages are: Temperature rise control: The measured maximum temperature rise inside the cabinet is ≤60K (State Grid requires ≤70K).

[0037] Reduced energy consumption: 70% more energy efficient than air conditioning solutions.

[0038] The beneficial effects of this utility model are as follows: by constructing a high-efficiency self-circulating air duct through the double-layer hollow sandwich structure on the top and both sides and the top grid-type air guide design, the internal temperature fluctuation is reduced, the dependence on external forced heat dissipation is reduced, and the problem of excessive temperature rise caused by insufficient heat dissipation of the JP cabinet is solved.

[0039] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A double-layer hollow grid-type JP cabinet, comprising a top cabinet (1) at the top, a bottom plate (2) at the bottom, a left cabinet (3) on the left side, and a right cabinet (4) on the right side, characterized in that: The top cabinet (1) includes an outer top plate (5) on the periphery and an inner guide plate (6) on the inner layer. The top surface of the outer top plate (5) is not perforated, and the four sides of the outer top plate (5) are provided with grille ventilation holes (7). The inner guide plate (6) is provided with ventilation holes (8). The left cabinet (3) includes a left outer side plate (9) on the periphery and a left inner side plate (10) on the inner layer. The upper half of the left inner side plate (10) is equipped with a drawer. The axial flow fan (11) for hot air inside the cabinet has a grille ventilation hole (7) on the upper half of the left outer side plate (9) corresponding to the air outlet of the axial flow fan (11); the bottom plate (2) is provided with a grille ventilation hole (7) for cold air inlet; the inner guide plate (6) is connected to the left inner side plate (10) on the left and the right inner side plate on the right, forming a hollow gap with the outer cabinet; the left cabinet is provided with a cable inlet pipe (12) and a cable outlet pipe (13).

2. The JP cabinet with a double-layer hollow fence structure according to claim 1, characterized in that: The distance between the left inner plate (10) and the left outer plate (9) is between 0.5 and 0.8 cm, forming a hollow air gap.

3. The JP cabinet with a double-layer hollow grid structure according to claim 1, characterized in that: The four sides of the outer top plate (5) are provided with grille ventilation holes (7), the transparency of which is between 30% and 50%.

4. The JP cabinet with a double-layer hollow fence structure according to claim 1, characterized in that: The grille ventilation holes (7) provided on the base plate (2) have a permeability between 20% and 30%.

5. The JP cabinet with a double-layer hollow grid structure according to claim 1, characterized in that: The cable inlet pipe (12) has the same structure as the cable outlet pipe (13), and its shape is an arc-shaped bend.

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