Special detachable dust removal device for secondary screen cabinet of transformer substation

Abstract

The utility model relates to the technical field of screen cabinet dust removal, in particular to a special detachable dust removal device for a secondary screen cabinet of a transformer substation, which comprises a support, an air supply component and a dust collection component, and the air supply component and the dust collection component are mounted on the support. Comprising an outer pipe sleeve with a strip-shaped air outlet and an air supply pipeline which is installed in the outer pipe sleeve with the strip-shaped air outlet and provided with a strip-shaped air supply outlet, and the strip-shaped air outlet of the outer pipe sleeve with the strip-shaped air outlet is opposite to the strip-shaped air supply outlet of the air supply pipeline with the strip-shaped air supply outlet in direction. The dust collection assembly comprises a dust collection pipeline, a dust discharge pipeline, an axial flow fan installed between the dust discharge pipeline and the dust collection pipeline, and a dust collection bag installed at an outlet of the dust discharge pipeline. According to the utility model, the influence of the dust removal process on the normal operation of the secondary screen cabinet can be reduced to the greatest extent through convection wind, and the dust removal capability can be adjusted according to the dust collection condition in the secondary screen cabinet.

Description

Technical Field

[0001] This utility model relates to the field of dust removal technology for power cabinets, specifically to a special detachable dust removal device for secondary power cabinets in substations. Background Technology

[0002] As power systems evolve towards intelligence and automation, higher demands are placed on the reliability and stability of substation secondary control cabinets. Components and circuit boards within these cabinets accumulate significant amounts of dust over long-term operation. Dust buildup on equipment surfaces impairs heat dissipation, leading to abnormally high component temperatures, accelerated component aging, and reduced equipment lifespan and reliability. Dust accumulation can also cause poor contact between components within the cabinet, creating short circuits or microcircuits on circuit boards, resulting in signal loss or distortion in control and measurement equipment, thus affecting the normal monitoring and control of the power system. Traditional dust removal methods often result in dust splashing and secondary pollution, and the dust inside the equipment is difficult to clean completely, posing a risk of damage to some precision components during cleaning. Therefore, new specialized dust removal devices are urgently needed to address this issue. Utility Model Content

[0003] To address the aforementioned issues, this utility model provides a dedicated detachable dust removal device for secondary cabinets in substations. This device can minimize the impact of the dust removal process on the normal operation of the secondary cabinets through convective airflow, and its dust removal capacity can be adjusted according to the dust collection situation inside the secondary cabinets.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A dedicated detachable dust removal device for secondary cabinets in substations includes a bracket and an air supply component and a dust collection component mounted on the bracket. The air supply component is located above the dust collection component and includes an outer sleeve with a strip-shaped air outlet and an air supply duct with a strip-shaped air supply outlet installed inside the outer sleeve. The strip-shaped air outlet of the outer sleeve and the strip-shaped air supply duct have opposite directions.

[0006] The dust collection assembly includes a dust collection pipe, a dust discharge pipe, an axial flow fan installed between the dust discharge pipe and the dust collection pipe, and a dust collection bag installed at the outlet of the dust discharge pipe.

[0007] Furthermore, a variable speed centrifugal fan is installed at the end of the air supply duct with the strip air outlet, which is used to send air or other gases into the air supply duct with the strip air outlet by centrifugal force, and to adjust the flow rate and pressure of the air or other gases.

[0008] Furthermore, the dust suction pipe is fixedly installed on the bracket and located below the air supply pipe, and the surface of the dust suction pipe is evenly distributed with a number of dust suction holes.

[0009] Furthermore, the dust collection bag is connected to the axial flow fan via a dust discharge pipe.

[0010] Furthermore, the strip-shaped air outlet is inclinedly disposed on the outer sleeve with the strip-shaped air outlet, and the strip-shaped air supply outlet is inclinedly disposed on the air supply duct with the strip-shaped air supply outlet, and the inclination direction of the strip-shaped air outlet and the strip-shaped air supply outlet is opposite.

[0011] Furthermore, the front end of the air supply duct with the strip-shaped air outlet is closed, and both ends of the outer sleeve with the strip-shaped air outlet are closed.

[0012] This utility model has the following beneficial effects:

[0013] In the above scheme, air or gas is fed into the secondary cabinet by a centrifugal fan and then enters through the air supply component, creating a pressure gradient inside the secondary cabinet and generating convection in a fixed direction. This blows off the dust adhering inside the secondary cabinet, and the blown-off dust is then drawn in and discharged by an axial flow fan, thus cleaning the dust collection inside the secondary cabinet. Since this device uses convection air to treat dust, it can minimize the impact of the dust removal process on the normal operation of the secondary cabinet. At the same time, it can also adjust the dust removal capacity according to the dust collection situation inside the secondary cabinet. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a front view of an embodiment of the present utility model;

[0016] Figure 2 This is a right-side perspective view of an embodiment of the present invention;

[0017] Figure 3 This is a left-side perspective view of an embodiment of the present invention.

[0018] Figure 4 This is a cross-sectional view of an embodiment of the present utility model;

[0019] Figure 5 This is a schematic diagram of the air supply component in an embodiment of the present utility model;

[0020] Figure 6 This is a schematic diagram of the connection structure of the outer sleeve with a strip-shaped air outlet and the air supply pipe with a strip-shaped air outlet in the embodiment of this utility model.

[0021] In the diagram: 1-Support; 2-Strip air outlet; 3-Outer sleeve; 4-Strip air supply outlet; 5-Air supply duct; 6-Variable speed centrifugal fan; 7-Dust suction duct; 8-Axial flow fan; 9-Dust exhaust duct; 10-Dust collection bag; 11-Dust suction hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-4 As shown, this utility model discloses a special detachable dust removal device for secondary cabinets in substations, comprising a support frame 1, an air supply assembly, and a dust collection assembly, as follows: Figures 5-6 As shown, the air supply assembly includes an outer sleeve 3 with a strip-shaped air outlet 2, an air supply duct 5 with a strip-shaped air supply outlet 4, and a variable-speed centrifugal fan 6. The air supply duct 5 with the strip-shaped air supply outlet 4 is installed inside the outer sleeve 3 with the strip-shaped air outlet 2, and their horizontal center points coincide. The front end of the air supply duct 5 with the strip-shaped air supply outlet 4 is closed, and the rear end is open, connected to the air outlet end of the variable-speed centrifugal fan 6. The variable-speed centrifugal fan 6 is used to send air or other gases into the air supply duct with the strip-shaped air supply outlet 2 by centrifugal force, and to adjust the flow rate and pressure of the air or other gases. The strip-shaped air outlet 2 of the outer sleeve 3 with the strip-shaped air outlet 2 is opposite in direction to the strip-shaped air supply outlet 2 of the air supply duct 5 with the strip-shaped air supply outlet 4, thereby pressurizing and decelerating the air or other gases entering the outer sleeve with the strip-shaped air outlet from the air supply duct with the strip-shaped air supply outlet 4 before sending them into the secondary shielding cabinet.

[0024] like Figures 1-4 As shown, the dust collection assembly includes a dust collection pipe 7, an axial flow fan 8, a dust discharge pipe 9, and a dust collection bag 10. The axial flow fan 8 is installed between the dust discharge pipe 9 and the dust collection pipe 7, and the dust collection bag 10 is installed at the outlet of the dust discharge pipe 9. During operation, the impeller of the axial flow fan 8 rotates, causing the gas to flow axially. At this time, the dust adhering to the secondary cabinet that is blown off by the convection generated by the air supply assembly will be sucked into the dust collection pipe through the dust collection holes 11 evenly distributed on the surface of the dust collection pipe, and then transported to the dust discharge pipe and the dust collection bag by the axial flow fan in sequence for discharge.

[0025] like Figures 1-4As shown, the outer sleeve 3 with the strip-shaped air outlet and the dust suction pipe 7 are both fixedly installed on the bracket, arranged parallel to each other, with the dust suction pipe 7 positioned below the outer sleeve 3 with the strip-shaped air outlet. In this embodiment, the bracket 1 is equipped with a stable base. To better stabilize the entire device, corresponding fixing components, such as bolt holes, negative pressure suction cups, etc., can be configured on the stable base.

[0026] like Figures 5-6 As shown, the outer sleeve 3 with a strip-shaped air outlet is closed at both ends. The tail end of the air supply duct 5 with a strip-shaped air outlet is fixedly connected to the tail end of the outer sleeve 3 with a strip-shaped air outlet, and the length of the outer sleeve 3 with a strip-shaped air outlet is greater than the length of the air supply duct 5 with a strip-shaped air outlet. The inner diameter of the air supply duct 5 with a strip-shaped air outlet is significantly smaller than that of the outer sleeve 3 with a strip-shaped air outlet, thus forming a space for air or other gas to flow between the inner wall of the outer sleeve with a strip-shaped air outlet and the air supply duct with a strip-shaped air outlet.

[0027] In order to make the direction of the strip-shaped air outlet of the outer sleeve with the strip-shaped air outlet opposite to that of the strip-shaped air supply outlet of the air supply duct with the strip-shaped air supply outlet, the strip-shaped air outlet 2 can be inclinedly set on the outer sleeve with the strip-shaped air outlet, and the strip-shaped air supply outlet 4 can be inclinedly set on the air supply duct with the strip-shaped air supply outlet, and the inclination direction of the strip-shaped air outlet 2 and the strip-shaped air supply outlet 4 is opposite.

[0028] In this specific implementation, air or other gases, after being powered by a variable-speed centrifugal fan, enter the outer sleeve with a strip-shaped outlet through an air supply duct with a strip-shaped air inlet. After being decelerated and pressurized by the outer sleeve with the strip-shaped outlet, the gas enters the secondary shielding cabinet, creating a pressure gradient within the cabinet and generating convection in a fixed direction. This blows off the dust adhering to the secondary shielding cabinet. This blown-off dust is then drawn into the suction duct through evenly distributed suction holes on the surface of the suction duct by an axial flow fan, and then transported to the dust collection bag for discharge through the dust exhaust duct. Furthermore, the dust removal capacity can be adjusted by changing the operating mode of the variable-speed centrifugal fan and the axial flow fan to suit different dust collection conditions within the secondary shielding cabinet.

[0029] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A dedicated detachable dust removal device for secondary switchgear in substations, comprising a bracket and an air supply assembly and a dust collection assembly mounted on the bracket, characterized in that: The air supply component is located above the dust collection component and includes an outer sleeve with a strip-shaped air outlet and an air supply duct with a strip-shaped air outlet installed inside the outer sleeve with the strip-shaped air outlet. The strip-shaped air outlet of the outer sleeve with the strip-shaped air outlet and the strip-shaped air outlet of the air supply duct with the strip-shaped air outlet are in opposite directions. The dust collection assembly includes a dust collection pipe, a dust discharge pipe, an axial flow fan installed between the dust discharge pipe and the dust collection pipe, and a dust collection bag installed at the outlet of the dust discharge pipe; A variable speed centrifugal fan is installed at the end of the air supply duct with a strip air outlet, which is used to send air or other gases into the air supply duct with the strip air outlet by centrifugal force, and to adjust the flow rate and pressure of the air or other gases. The dust collection pipe is fixedly installed on the bracket and located below the air supply pipe, and the surface of the dust collection pipe is evenly distributed with a number of dust collection holes. The dust collection bag is connected to the axial flow fan through a dust discharge pipe.

2. The dedicated detachable dust removal device for secondary switchgear in substations as described in claim 1, characterized in that: The strip-shaped air outlet is inclinedly installed on the outer sleeve with the strip-shaped air outlet, and the strip-shaped air supply outlet is inclinedly installed on the air supply duct with the strip-shaped air supply outlet, and the inclination direction of the strip-shaped air outlet and the strip-shaped air supply outlet is opposite.

3. A dedicated detachable dust removal device for secondary switchgear in substations as described in claim 1, characterized in that: The front end of the air supply duct with the strip-shaped air outlet is closed, and both ends of the outer sleeve with the strip-shaped air outlet are closed.

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