Internal short-circuit arcing pressure relief channel of switch cabinet

Abstract

The utility model relates to an internal short-circuit arcing pressure relief channel of a switch cabinet. The internal short-circuit arcing pressure relief channel comprises a channel body, the at least one flow guide plate assembly is arranged in the channel body, and the flow guide plate assembly is suitable for obliquely guiding airflow with the upward bottom; the at least one metal net assembly is connected with the channel body and is suitable for intercepting particulate matters in the air flow from being sprayed out of an outlet of the channel body. And the influence of high-pressure and high-temperature airflow, hot particles and splashes on peripheral equipment is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of electric power switch cabinets, in particular to a short-circuit arcing pressure relief channel inside the switch cabinet. Background Art

[0002] The pressure relief channel is the key part of the switch cabinet to release the overpressure caused by short-circuit explosion. Its safe and reliable opening is the fundamental guarantee to ensure the safety of equipment, staff and buildings.

[0003] Although the existing pressure relief channel can effectively release the pressure, the hot particles and splashes are directly discharged to the surrounding of the cabinet without effective guidance, which can easily affect the surrounding equipment and cause secondary accidents, or even major safety accidents such as fire burning the entire camp.

[0004] It can be seen that the existing switch cabinet pressure relief channel has shortcomings and needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide a short-circuit arcing pressure relief channel inside a switch cabinet, so as to solve the technical problem that the pressure relief channel cannot effectively intercept particulate matter in the airflow during the pressure release process, causing the particulate matter to be directly discharged to the surrounding area of ​​the cabinet, thereby affecting surrounding equipment.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] Provided is a short-circuit arcing pressure relief channel inside a switch cabinet, comprising

[0008] Channel body;

[0009] At least one guide plate assembly, each guide plate assembly is arranged in the channel body, and the guide plate assembly is suitable for guiding the airflow upward from the bottom in an inclined manner;

[0010] At least one metal mesh component is connected to the channel body and is suitable for intercepting particles in the airflow from being ejected from the outlet of the channel body.

[0011] Furthermore, the guide plate assemblies are two, namely a lower guide plate assembly and an upper guide plate assembly;

[0012] The lower guide plate group guides the airflow in an oblique rearward direction, and the upper guide plate group guides the airflow in an oblique forward direction.

[0013] Furthermore, the guide plates in the guide plate assembly are arranged side by side and equidistantly.

[0014] Furthermore, the guide plate is an obtuse-angled plate, and a straight path and an inclined path are formed between adjacent guide plates. The direction of the straight path is consistent with the length direction of the channel body, and the inclined path faces the front side or the rear side of the channel body.

[0015] Furthermore, the number of the metal mesh components is two, which are divided into an upper metal mesh component and a lower metal mesh component;

[0016] The two metal mesh components are fixedly connected to the channel body, and the airflow in the channel body is intercepted by the lower metal mesh component and the upper metal mesh component in turn and then discharged.

[0017] Furthermore, the upper metal mesh component is fixed at the outlet of the channel body, and the lower metal mesh component is located in the channel body.

[0018] Furthermore, at least one support rod is arranged between the upper metal mesh assembly and the lower metal mesh assembly, an external thread section is arranged at the lower end of the support rod, the external thread section is connected to a locking nut, an internal thread hole is arranged at the upper end of the support rod, and the internal thread hole is connected to a locking bolt;

[0019] The locking bolt passes through the upper metal mesh assembly and is connected to the upper end of the support rod to clamp the upper metal mesh assembly between the locking bolt and the support rod;

[0020] The external thread section passes through the lower metal mesh component and is connected to the locking nut to lock the lower metal mesh component to the lower end of the support rod.

[0021] Furthermore, the metal mesh assembly includes a pair of clamping plates and a mesh plate, wherein the mesh plate is located between the two clamping plates, and the clamping plates are provided with a plurality of through holes for airflow to pass through.

[0022] Furthermore, the channel body comprises

[0023] A reference channel and a heightened channel, wherein the reference channel is connected to the switch cabinet compartment, the heightened channel is installed at the upper end of the reference channel, and each group of guide plates and metal mesh components are installed in the heightened channel.

[0024] The beneficial effects of the utility model are:

[0025] 1. Effectively reduce the impact of high-pressure and high-temperature airflow, hot particles and splashes on surrounding equipment.

[0026] 2. The manufacturing and processing are convenient, and the pressure relief channel can be reused.

[0027] 3. Overall modular assembly, simple and efficient assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The utility model is further described below in conjunction with the accompanying drawings.

[0029] Figure 1 It is a three-dimensional diagram of the short-circuit arcing pressure relief channel inside the switch cabinet of the utility model;

[0030] Figure 2 This is a half-section diagram of the short-circuit arcing pressure relief channel inside the switch cabinet of the utility model;

[0031] Figure 3 It is a schematic diagram of the guide plate assembly and the metal mesh assembly in the heightened channel;

[0032] Figure 4 It is a schematic diagram of two guide plate assemblies and two metal mesh assemblies;

[0033] Figure 5 It is a schematic diagram of the support rod, locking nut and locking bolt;

[0034] Among them, 1, channel body, 11, reference channel, 12, heightening channel;

[0035] 2. guide plate assembly, 2A, lower guide plate assembly, 2B, upper guide plate assembly;

[0036] 3A, upper metal mesh assembly, 3B, lower metal mesh assembly;

[0037] 31, plywood, 32, mesh board;

[0038] 4. Support rod, 41. External thread section, 42. Locking nut, 43. Locking bolt. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] The present application provides a short-circuit arcing pressure relief channel inside a switch cabinet, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0041] In order to solve the technical problem that the pressure relief channel in the prior art cannot effectively intercept particulate matter in the airflow during the pressure release process, resulting in the particulate matter being directly discharged to the surrounding of the cabinet and affecting the surrounding equipment, an embodiment of the present application provides a short-circuit arcing pressure relief channel inside the switch cabinet. The following is a detailed description.

[0042] like Figures 1 to 5 As shown, a short-circuit arcing pressure relief channel inside a switch cabinet includes

[0043] Channel body 1;

[0044] At least one guide plate assembly 2, each guide plate assembly 2 is arranged in the channel body 1, and the guide plate assembly 2 is suitable for guiding the airflow upward from the bottom in an inclined manner;

[0045] At least one metal mesh component is connected to the channel body 1 and is suitable for intercepting particles in the airflow from being ejected from the outlet of the channel body 1.

[0046] Specifically, as an optional implementation in this embodiment, Figures 1 to 5 As shown, there are two guide plate assemblies 2, namely a lower guide plate assembly 2A and an upper guide plate assembly 2B;

[0047] The lower guide plate group 2A guides the airflow in an oblique rearward direction, and the upper guide plate group 2B guides the airflow in an oblique forward direction.

[0048] Through the guidance of the two guide plate groups, the high-pressure and high-temperature airflow carrying hot particles and splashes can be blocked when it flows upward to prevent the particles from flying out of the pressure relief channel.

[0049] Specifically, as an optional implementation in this embodiment, Figures 1 to 5 As shown, the guide plates in the guide plate assembly 2 are arranged side by side and equidistantly.

[0050] like Figure 3 Figure 4 As shown, the guide plate assembly 2 includes a plurality of guide plates and a rectangular frame. The guide plates are welded side by side in the rectangular frame, and the rectangular frame is welded inside the channel body, so that the entire guide plate assembly 2 is installed in the channel.

[0051] Specifically, as an optional implementation in this embodiment, Figure 4 and Figure 5 As shown, the guide plate is an obtuse-angled plate, and a straight path and an inclined path are formed between adjacent guide plates. The direction of the straight path is consistent with the length direction of the channel body 1, and the inclined path faces the front side or the rear side of the channel body 1.

[0052] The guide plate is an integrated structure, formed into an obtuse-angled plate by bending, and the straight edge of the guide plate is used to be welded and fixed to the rectangular frame.

[0053] Specifically, as an optional implementation in this embodiment, Figures 1 to 5 As shown, there are two metal mesh components, which are divided into an upper metal mesh component 3A and a lower metal mesh component 3B;

[0054] Both metal mesh components are fixedly connected to the channel body 1, and the airflow in the channel body 1 is intercepted by the lower metal mesh component 3B and the upper metal mesh component 3A in turn and then discharged.

[0055] The metal mesh component can be installed independently in the channel body 1, and the installation method can be bolt fastening or welding fixing.

[0056] Specifically, as an optional implementation in this embodiment, Figures 1 to 4 As shown, the upper metal mesh component 3A is fixed at the outlet of the channel body 1 , and the lower metal mesh component 3B is located inside the channel body 1 .

[0057] like Figure 4 As shown, the upper metal mesh component 3A is vertically fastened to the channel body 1 by bolts, and the lower metal mesh component 3B is located in the channel body 1. The lower metal mesh component 3B can be fixed by welding between the inner walls of the channel.

[0058] Specifically, as an optional implementation in this embodiment, Figure 3 Figure 4 Figure 5 As shown, four support rods 4 are arranged between the upper metal mesh assembly 3A and the lower metal mesh assembly 3B, the lower ends of the support rods 4 are provided with external thread sections 41, the external thread sections 41 are connected to locking nuts 42, the upper ends of the support rods 4 are provided with internal thread holes, the internal thread holes are connected to locking bolts 43;

[0059] like Figure 5 As shown, the locking bolt 43 passes through the upper metal mesh component 3A and is connected to the upper end of the support rod 4 to clamp the upper metal mesh component 3A between the locking bolt 43 and the support rod 4;

[0060] The external thread section 41 passes through the lower metal mesh component 3B and is connected to a nut to lock the lower metal mesh component 3B to the lower end of the support rod 4.

[0061] In this embodiment, the metal mesh component is installed at the channel outlet by screws on all sides. After the lower metal mesh component 3B is connected to the upper metal mesh component 3A by four support rods 4, there is no need to weld the lower metal mesh component 3B and the inner wall of the channel. It is only necessary to control the gap between the lower metal mesh component 3B and the inner wall of the channel.

[0062] Specifically, as an optional implementation in this embodiment, Figure 4 As shown, the metal mesh assembly includes a pair of clamping plates 31 and a mesh plate 32. The mesh plate 32 is located between the two clamping plates 31. The clamping plates 31 are provided with a plurality of through holes for airflow to pass through.

[0063] In this embodiment, the mesh plate 32 is made of tungsten wire mesh.

[0064] The perforations on the clamping plate 31 are relatively large in size and are relatively large diamond-shaped holes. The diamond-shaped blocks are arranged together to ensure that the airflow can pass through while also achieving the clamping of the mesh plate 32.

[0065] The clamping plate 31 is made of stainless steel, the stainless steel clamping plate 31 intercepts large splashes and withstands impact force, and the mesh plate 32 intercepts smaller particles.

[0066] Specifically, as an optional implementation in this embodiment, Figures 1 to 3 As shown, the channel body 1 includes

[0067] A reference channel 11 and a heightened channel 12 , wherein the reference channel 11 is connected to the switch cabinet compartment, and the heightened channel is installed at the upper end of the reference channel 11 , and the two guide plate assemblies 2 and the metal mesh assembly are both installed in the heightened channel 12 .

[0068] The two guide plate assemblies 2 and the metal mesh assembly are installed in the heightened channel 12 in advance and made into a module in advance. The reference channel 11 is also made in advance. The size structure of the reference channel 11 refers to the previous one. The reference channel 11 is also made in advance. After arriving at the site, the two are assembled, and the overall modular assembly is simple and efficient.

[0069] When the short-circuit arcing pressure relief channel inside the switch cabinet is operating, the lower end of the pressure relief channel is connected to the side of the switch cabinet compartment, and the high-pressure and high-temperature airflow, hot particles and splashes inside the pressure relief channel change direction and slow down through the guide plate; the mesh plate 32 effectively intercepts the hot particles and splashes from spraying out of the pressure relief channel, thereby reducing the impact of the high-pressure and high-temperature airflow, hot particles and splashes on surrounding equipment, and reducing the threat of the short-circuit explosion impact to buildings.

[0070] The guide plate assembly 2 and the metal mesh assembly are separately arranged in the heightened channel 12. The guide plate is welded inside the heightened channel 12 to modularize the heightened channel 12 so that it can be directly connected to the existing pressure relief channel.

[0071] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0072] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0074] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0075] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0076] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0077] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A short-circuit arcing pressure relief channel inside a switch cabinet, characterized in that: include Channel body (1); At least one guide plate assembly (2), each guide plate assembly (2) being arranged in the channel body (1), and the guide plate assembly (2) being suitable for guiding the airflow from the bottom upwards at an angle; At least one metal mesh component, the metal mesh component is connected to the channel body (1) and is suitable for intercepting particles in the air flow from the outlet of the channel body (1).

2. The short-circuit arcing pressure relief channel inside the switch cabinet according to claim 1 is characterized in that: The guide plate assemblies (2) are two in number, namely a lower guide plate assembly (2A) and an upper guide plate assembly (2B); The lower guide plate group (2A) guides the airflow in an oblique rearward direction, and the upper guide plate group (2B) guides the airflow in an oblique forward direction.

3. The short-circuit arcing pressure relief channel inside the switch cabinet according to claim 1 is characterized in that: The guide plates in the guide plate assembly (2) are arranged side by side and are equidistantly distributed.

4. The short-circuit arcing pressure relief channel inside the switch cabinet according to claim 1 is characterized in that: The guide plates are obtuse-angled plates, and straight paths and inclined paths are formed between adjacent guide plates. The direction of the straight paths is consistent with the length direction of the channel body (1), and the inclined paths face the front side or the rear side of the channel body (1).

5. The short-circuit arcing pressure relief channel inside the switch cabinet according to claim 1 is characterized in that: The number of the metal mesh components is two, which are divided into an upper metal mesh component (3A) and a lower metal mesh component (3B); The two metal mesh components are fixedly connected to the channel body (1), and the airflow in the channel body (1) is intercepted by the lower metal mesh component (3B) and the upper metal mesh component (3A) in sequence before being discharged.

6. The short-circuit arcing pressure relief channel inside the switch cabinet according to claim 5 is characterized in that: The upper metal mesh component (3A) is fixed at the outlet of the channel body (1), and the lower metal mesh component (3B) is located inside the channel body (1).

7. The short-circuit arcing pressure relief channel inside the switch cabinet according to claim 6 is characterized in that: At least one support rod (4) is arranged between the upper metal mesh component (3A) and the lower metal mesh component (3B); an external thread section (41) is arranged at the lower end of the support rod (4); the external thread section (41) is connected to a locking nut (42); an internal thread hole is arranged at the upper end of the support rod (4); and the internal thread hole is connected to a locking bolt (43); The locking bolt (43) passes through the upper metal mesh component (3A) and is connected to the upper end of the support rod (4) to clamp the upper metal mesh component (3A) between the locking bolt (43) and the support rod (4); The external thread section (41) passes through the lower metal mesh component (3B) and is connected to the locking nut (42) to lock the lower metal mesh component (3B) to the lower end of the support rod (4).

8. The short-circuit arcing pressure relief channel inside the switch cabinet according to claim 5 is characterized in that: The metal mesh assembly comprises a pair of clamping plates (31) and a mesh plate (32); the mesh plate (32) is located between the two clamping plates (31); and the clamping plates (31) are provided with a plurality of through holes for airflow to pass through.

9. The short-circuit arcing pressure relief channel inside the switch cabinet according to claim 1 is characterized in that: The channel body (1) comprises A reference channel (11) and a heightened channel (12), wherein the reference channel (11) is connected to the switch cabinet compartment, the heightened channel is installed at the upper end of the reference channel (11), and each group of guide plates and metal mesh components are installed in the heightened channel (12).

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