Anti-islanding resonant load

Abstract

The utility model discloses an anti-islanding resonant load, which comprises a box body, a mounting plate is fixed on one side wall in the box body, a load detection equipment main body is fixed on the mounting plate, the anti-islanding resonant load further comprises a heat dissipation structure, and the heat dissipation structure is fixed at one end of the box body; one end of the electric push rod is fixed on the mounting plate, and the other end of the electric push rod is fixed with the heat dissipation structure through the fixing structure. When a large amount of heat is accumulated in the box body, the heat dissipation structure is pushed by the electric push rod to move outwards, and when the heat in the box body is extracted by the heat dissipation fan, the heat is discharged from the heat dissipation dustproof net, so that the heat dissipation efficiency in the box body can be accelerated; the fixing structure and the heat dissipation dustproof net frame are pushed to move outwards through the electric push rod, when the fixing structure moves to the position of the opening, a pull plate can be pulled upwards from the opening, so that a clamping block is separated from the top of the heat dissipation dustproof net frame, at the moment, the heat dissipation structure can be detached, and the heat dissipation structure is convenient to clean and replace.

Description

Technical Field

[0001] This application relates to anti-islanding resonant loads. Background Technology

[0002] An anti-islanding resonant load is a device specifically designed to simulate various resistive (R), capacitive (C), and inductive (L) AC loads. It accurately simulates the inverter's operating environment, meeting the testing requirements for anti-islanding protection. By simulating different load conditions, the anti-islanding resonant load helps verify the response and protection functions of grid-connected inverters under various circumstances, ensuring timely disconnection in the event of grid faults and protecting the safety of the grid and equipment.

[0003] Anti-islanding resonant loads generate heat during operation, thus requiring effective heat dissipation measures to ensure stable operation and extend service life. Specifically, anti-islanding resonant loads typically employ forced air cooling. While this method effectively dissipates heat and prevents overheating, when significant heat buildup occurs, the enclosed side walls of the load cell slow down heat dissipation.

[0004] Therefore, it is desirable to provide an anti-islanding resonant load. Utility Model Content

[0005] In this embodiment, an anti-islanding resonant load is provided to solve the problem that when a lot of heat accumulates, the other side walls of the load box are closed, and the heat dissipation is slow.

[0006] According to one aspect of this application, an anti-islanding resonant load is provided, comprising a housing, a mounting plate fixed to one inner side wall of the housing, and a load detection device body fixed to the mounting plate; the anti-islanding resonant load further includes:

[0007] A heat dissipation structure is fixed at one end of the housing;

[0008] The system includes a fixed structure and an electric push rod. One end of the electric push rod is fixed to the mounting plate, and the other end of the electric push rod is fixed to the heat dissipation structure through the fixed structure.

[0009] Furthermore, a base is fixed to the bottom of the box, a top cover is fixed to the top of the box by bolts, and side plates are fixed to both sides of the box by bolts.

[0010] Furthermore, the heat dissipation structure includes a heat dissipation mesh, a heat dissipation and dustproof mesh frame, and a heat dissipation fan. The heat dissipation mesh is located at the bottom of the housing, and the side wall of the housing corresponding to the heat dissipation mesh has openings.

[0011] Furthermore, cooling fans are fixed on both sides of the inner wall of the heat dissipation mesh, and a heat dissipation and dustproof mesh frame is fixed to the heat dissipation mesh outside the cooling fans by bolts, with the side wall of the heat dissipation and dustproof mesh frame overlapping with the inner wall of the box.

[0012] Furthermore, an opening is provided on the top of the housing of the heat dissipation mesh, and a door is fixed to the top of the housing by a hinge.

[0013] Furthermore, the fixing structure includes a fixing plate, a mounting groove, a partition, a limiting rod, a spring, a locking block, a connecting rod, a pull plate, and a slot, wherein the fixing plate is fixed to the end of the electric push rod away from the mounting plate.

[0014] Furthermore, the fixing plate is provided with an installation groove, and a partition is fixed in the middle of the installation groove. Limiting rods are fixed on both sides of the bottom of the partition, and springs are sleeved on the outside of the limiting rods.

[0015] Furthermore, the limiting rod and the bottom end of the spring are fixed to the top of the locking block, and the locking block is engaged with one end of the top of the heat dissipation and dustproof mesh frame.

[0016] Furthermore, a connecting rod is fixed to the top of the locking blocks on both sides of the limiting rod, and the top end of the connecting rod passes through the partition and is fixed to the bottom of the pull plate. The connecting rod is slidably connected to the partition.

[0017] Furthermore, the mounting groove sidewall corresponding to the pull plate is vertically provided with a slot, and the slot corresponds to the opening on the box body.

[0018] The advantages of this application are:

[0019] 1. By setting a heat dissipation structure at one end of the cabinet, and fixing the top of the heat dissipation structure to the electric push rod through a fixing structure, when a lot of heat accumulates inside the cabinet, the heat dissipation structure can be moved outward by the electric push rod, so that the cooling fan and the heat dissipation dustproof mesh frame can be moved to the outside of the cabinet. When the cooling fan draws out the heat inside the cabinet, the heat will be discharged from the heat dissipation dustproof mesh, which can accelerate the efficiency of heat dissipation inside the cabinet.

[0020] 2. A fixing structure is fixed to the top of one end of the heat dissipation and dustproof mesh frame. The fixing structure is fixed to one end of the electric push rod. The fixing structure corresponds to the opening at the top of the heat dissipation structure. The electric push rod pushes the fixing structure and the heat dissipation and dustproof mesh frame to move outward. When the fixing structure moves to the opening position, the pull plate can be pulled upward from the opening to separate the locking block from the top of the heat dissipation and dustproof mesh frame. At this time, the heat dissipation structure can be disassembled for easy cleaning and replacement. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application;

[0023] Figure 2 This is a front view structural diagram of one embodiment of this application;

[0024] Figure 3 This is a side view of one embodiment of the present application.

[0025] Figure 4 This is one embodiment of the present application. Figure 3 A magnified structural diagram at point A;

[0026] Figure 5 This is a side view of the external structure of one embodiment of this application;

[0027] Figure 6 This is a top view of the external structure of one embodiment of this application;

[0028] Figure 7 This is a schematic diagram of the overall structure of a heat dissipation structure according to an embodiment of this application.

[0029] In the diagram: 1. Housing; 2. Base; 3. Top cover; 4. Heat dissipation structure; 401. Heat dissipation mesh; 402. Heat dissipation and dustproof mesh frame; 403. Heat dissipation fan; 5. Door leaf; 6. Opening; 7. Fixing structure; 701. Fixing plate; 702. Mounting groove; 703. Partition; 704. Limiting rod; 705. Spring; 706. Locking block; 707. Connecting rod; 708. Pull plate; 709. Slot; 8. Mounting plate; 9. Main body of load detection equipment; 10. Electric push rod; 11. Side plate. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0031] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0032] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0033] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0034] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] Please see Figure 1-7 As shown, the anti-islanding resonant load includes a housing 1, with a mounting plate 8 fixed to one inner side wall of the housing 1. A load detection device body 9 is fixed to the mounting plate 8. The anti-islanding resonant load also includes:

[0037] Heat dissipation structure 4, one end of the box 1 is fixed with heat dissipation structure 4;

[0038] The fixed structure 7 and the electric push rod 10 are provided. One end of the electric push rod 10 is fixed on the mounting plate 8, and the other end of the electric push rod 10 is fixed to the heat dissipation structure 4 through the fixed structure 7.

[0039] The bottom of the box 1 is fixed with a base 2, the top of the box 1 is fixed with a top cover 3 by bolts, and the sides of the box 1 are fixed with side plates 11 by bolts.

[0040] The heat dissipation structure 4 includes a heat dissipation mesh 401, a heat dissipation and dustproof mesh frame 402, and a heat dissipation fan 403. The heat dissipation mesh 401 is located at the bottom of the housing 1, and the side wall of the housing 1 corresponding to the heat dissipation mesh 401 is provided with an opening.

[0041] Cooling fans 403 are fixed on both sides of the inner wall of the heat dissipation mesh 401. A heat dissipation and dustproof mesh frame 402 is fixed to the heat dissipation mesh 401 outside the cooling fans 403 by bolts. The side wall of the heat dissipation and dustproof mesh frame 402 overlaps with the inner wall of the box body 1.

[0042] An opening 6 is provided on the box 1 at the top of the heat dissipation mesh 401, and a door 5 is fixed to the box 1 at the top of the opening 6 by a hinge.

[0043] The fixing structure 7 includes a fixing plate 701, a mounting groove 702, a partition 703, a limiting rod 704, a spring 705, a locking block 706, a connecting rod 707, a pull plate 708, and a slot 709. The fixing plate 701 is fixed to the end of the electric push rod 10 away from the mounting plate 8.

[0044] The fixing plate 701 is provided with an installation groove 702. A partition 703 is fixed in the middle of the installation groove 702. Limiting rods 704 are fixed on both sides of the bottom of the partition 703. Springs 705 are sleeved on the outside of each limiting rod 704. The limiting rods 704 are telescopic and limit the springs 705 to prevent the springs 705 from being overstretched or compressed.

[0045] The bottom ends of the limiting rod 704 and the spring 705 are fixed to the top of the locking block 706, and the locking block 706 is engaged with one end of the top of the heat dissipation and dustproof mesh frame 402.

[0046] The top of the locking blocks 706 on both sides of the limiting rod 704 is fixed with a connecting rod 707. The top of the connecting rod 707 passes through the partition 703 and is fixed to the bottom of the pull plate 708. The connecting rod 707 is slidably connected to the partition 703.

[0047] The mounting groove 702 corresponding to the pull plate 708 has a vertically provided slot 709 on its side wall, and the slot 709 corresponds to the opening 6 on the housing 1.

[0048] The working principle and usage method of the electrical components mentioned in this application are all connected to an external power supply and control device during use. First, the anti-islanding resonant load can help verify the response and protection functions of the grid-connected inverter under various conditions, ensuring that it can disconnect in time during grid faults and protect the safety of the grid and equipment. When there is a lot of heat accumulation in the load box 1 and the heat dissipation efficiency is low, the heat dissipation structure 4 can be moved outward by the electric push rod 10, so that the cooling fan 403 and the heat dissipation dustproof mesh frame 402 can be moved to the outside of the box 1. When the cooling fan 403 extracts the heat from the box 1, the heat will be discharged from the heat dissipation dustproof mesh, which can accelerate the heat dissipation efficiency in the box 1. When it is necessary to disassemble and clean the heat dissipation structure 4, the fixing structure 7 and the heat dissipation dustproof mesh frame 402 can be moved outward by the electric push rod 10. When the fixing structure 7 moves to the opening 6 position, the pull plate 708 can be pulled upward from the opening 6 to separate the locking block 706 from the top of the heat dissipation dustproof mesh frame 402. At this time, the heat dissipation structure 4 can be disassembled, which is convenient to operate.

[0049] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An anti-islanding resonant load, comprising a housing (1), wherein a mounting plate (8) is fixed to one inner side wall of the housing (1), and a load detection device body (9) is fixed to the mounting plate (8), characterized in that, The anti-islanding resonant load also includes: Heat dissipation structure (4), one end of the box (1) is fixed with heat dissipation structure (4); The fixed structure (7) and the electric push rod (10) are provided. One end of the electric push rod (10) is fixed on the mounting plate (8), and the other end of the electric push rod (10) is fixed to the heat dissipation structure (4) through the fixed structure (7).

2. The anti-islanding resonance load according to claim 1, characterized in that: The bottom of the box (1) is fixed with a base (2), the top of the box (1) is fixed with a top cover (3) by bolts, and the sides of the box (1) are fixed with side plates (11) by bolts.

3. The anti-islanding resonance load according to claim 1, characterized in that: The heat dissipation structure (4) includes a heat dissipation mesh (401), a heat dissipation and dustproof mesh frame (402), and a heat dissipation fan (403). The heat dissipation mesh (401) is located at the bottom of the box (1), and the side wall of the box (1) corresponding to the heat dissipation mesh (401) is provided with an opening.

4. The anti-islanding resonance load according to claim 3, characterized in that: Cooling fans (403) are fixed on both sides of the inner wall of the heat dissipation mesh (401). A heat dissipation and dustproof mesh frame (402) is fixed on the heat dissipation mesh (401) outside the cooling fans (403) by bolts. The side wall of the heat dissipation and dustproof mesh frame (402) overlaps with the inner wall of the box body (1).

5. The anti-islanding resonance load according to claim 3, characterized in that: An opening (6) is provided on the box (1) at the top of the heat dissipation mesh (401), and a door (5) is fixed on the box (1) at the top of the opening (6) by a hinge.

6. The anti-islanding resonance load according to claim 1, characterized in that: The fixing structure (7) includes a fixing plate (701), a mounting groove (702), a partition plate (703), a limiting rod (704), a spring (705), a locking block (706), a connecting rod (707), a pull plate (708), and a slot (709). The fixing plate (701) is fixed to the end of the electric push rod (10) away from the mounting plate (8).

7. The anti-islanding resonance load according to claim 6, characterized in that: The fixing plate (701) is provided with an installation groove (702). A partition plate (703) is fixed in the middle of the installation groove (702). Limiting rods (704) are fixed on both sides of the bottom of the partition plate (703). Springs (705) are sleeved on the outside of the limiting rods (704).

8. The anti-islanding resonance load according to claim 7, characterized in that: The bottom ends of the limiting rod (704) and the spring (705) are fixed to the top of the locking block (706), and the locking block (706) is engaged with one end of the top of the heat dissipation and dustproof mesh frame (402).

9. The anti-islanding resonance load according to claim 7, characterized in that: The top of the locking blocks (706) on both sides of the limiting rod (704) is fixed with a connecting rod (707). The top of the connecting rod (707) passes through the partition (703) and is fixed to the bottom of the pull plate (708). The connecting rod (707) is slidably connected to the partition (703).

10. The anti-islanding resonance load according to claim 9, characterized in that: The mounting groove (702) corresponding to the pull plate (708) has a vertically provided slot (709) on its side wall, and the slot (709) corresponds to the opening (6) on the box body (1).

Images