Explosion-proof structure of high-voltage switch cabinet
By designing a combined structure of installation plate, pressure relief plate and pressure sensor in a high-voltage switch cabinet, the pressure relief problem of traditional high-voltage switch cabinet during explosion is solved, and the explosion-proof effect of stable structure and reliable pressure relief is achieved, reducing safety hazards.
Patent Information
- Application Number
- CN202420556983.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-03-21
AI Technical Summary
Traditional high-pressure switch cabinets lack effective pressure relief protection when explosion, resulting in the inability to release high-pressure airflow in time, causing safety hazards. The plastic bolt breaking scheme in the prior art is unstable and cannot meet the needs.
An explosion-proof structure including mounting plate, pressure relief plate, pressure relief cylinder and pressure sensor is designed. The pressure inside the cabinet is detected through the pressure sensor, and the electromagnet is controlled to drive the pressure relief plate and pressure relief cylinder to slide, forming a path for pressure relief, ensuring the stability of the structure. and reliable pressure relief.
It realizes effective pressure relief in the high-voltage switch cabinet, reduces safety risks during explosion, ensures structural stability and pressure relief reliability, and is easy to install and use.
Smart Images
Figure CN222282551U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of switch cabinets, in particular to an explosion-proof structure of a high-voltage switch cabinet. Background Art
[0002] High-voltage switchgear refers to a distribution device that plays the role of switching, controlling or protecting in power generation, transmission, distribution, and power conversion and consumption in the power system. Since the voltage controlled by the high-voltage switchgear is very high, when the electrical elements inside it are short-circuited or other unexpected situations occur, the current passing through the electrical elements will increase sharply, accompanied by a sudden rise in temperature, making the electrical elements in the high-voltage switchgear prone to explosion. When an explosion occurs, an instantaneous high-pressure airflow will be generated in the high-voltage switchgear. Traditional high-voltage switchgear generally does not have a pressure relief protection structure, so that the high-pressure airflow generated during the explosion cannot be effectively released instantly. The high-pressure airflow will blow the cabinet door open, and the fragments of the damaged electrical components will fly out, causing serious damage to personnel or equipment around the high-voltage switchgear, posing a huge safety hazard.
[0003] Chinese patent CN201720126875.5 discloses an explosion-proof structure of a high-voltage switchgear. When an explosion occurs, the second plastic bolt fixing the auxiliary cover will break first, and the first plastic bolt will break subsequently, so that the auxiliary cover is opened first, and a part of the high-pressure airflow is released from the second pressure relief port in advance to prevent the main cover from being blown away by the excessive pressure of the instantaneous high-pressure airflow. The main cover is opened after the auxiliary cover, and the remaining high-pressure airflow is released from the first pressure relief port.
[0004] The above solution requires that under the action of high-pressure airflow, the second plastic bolt breaks first and the first plastic bolt breaks later. However, in actual use, this order is not followed. After the plastic bolt breaks, the main cover and the auxiliary cover open, and the electrical component fragments fly out, which cannot provide protection. Although the solution mentions a protective net, the protective net is targeted at the inner side of the transparent plate, not the pressure relief port, so the above technical solution cannot meet the use requirements. Summary of the invention
[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by this patent application is how to provide an explosion-proof structure of a high-voltage switch cabinet with a stable structure, reliable pressure relief, and easy installation.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0007] A high-voltage switch cabinet explosion-proof structure comprises a cabinet body, on which a pressure relief protection component is installed.
[0008] The pressure relief protection assembly comprises a mounting plate and a pressure relief plate, an outer plate is fixedly mounted on the mounting plate, a mounting groove is provided on the cabinet, the mounting plate is fixedly mounted on the inner side of the cabinet, and the outer plate is located in the mounting groove;
[0009] The pressure relief plate is located on the inner side of the mounting plate, and a plurality of pressure relief cylinders arranged in a matrix are fixedly mounted on the pressure relief plate. The pressure relief cylinder is hollow, and a pressure relief groove is arranged through the circumference of the pressure relief cylinder. The mounting plate and the outer plate are penetrated by sliding holes that slide with the pressure relief cylinder, and the outer end of the pressure relief cylinder is closed. A pressure sensor is fixedly mounted on the pressure relief plate, and an adsorption iron block is fixedly mounted on the pressure relief plate facing the mounting plate. An electromagnet that can adsorb the adsorption iron block is fixedly mounted on the mounting plate facing the pressure relief iron block.
[0010] In this way, the pressure inside the cabinet is detected by the pressure sensor. When it is detected that the pressure inside the cabinet exceeds the limit value, the pressure sensor transmits a signal to the external controller. The external controller controls the electromagnet to energize, and the electromagnet adsorbs the adsorption iron block, thereby driving the pressure relief plate to move closer to the mounting plate, and the pressure relief cylinder slides outward. Through the setting of the pressure relief groove, a passage is formed that is open inside and outside the cabinet, thereby providing pressure relief protection for the inside of the cabinet.
[0011] Wherein, the pressure relief plate is provided with a pressure relief port directly opposite to the pressure relief cylinder.
[0012] Among them, the mounting plate is fixedly installed with a sliding rod, the pressure relief plate is penetrated by a sliding hole that slides with the sliding rod, the sliding rod passes through the sliding hole and is fixedly installed with a limiting block, the outer side of the sliding rod is sleeved with a compression spring, and the compression spring is located between the mounting plate and the pressure relief plate.
[0013] The mounting plate is provided with a mounting hole, the cabinet is provided with a through hole, and the bolts pass through the through hole and the mounting hole and are connected with nuts to fix the mounting plate and the cabinet.
[0014] Wherein, the mounting plate and the cabinet are provided with a rectangular sealing gasket.
[0015] In summary, the explosion-proof structure of the high-voltage switchgear has the advantages of stable structure, reliable pressure relief and convenient installation. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The utility model is a schematic structural diagram of an explosion-proof structure of a high-voltage switch cabinet.
[0017] Figure 2 for Figure 1 Schematic diagram of the pressure relief assembly.
[0018] Figure 3 for Figure 2 Schematic diagram of another orientation.
[0019] Figure 4 for Figure 1 Schematic diagram of the depressurized state.
[0020] Figure 5 for Figure 2 Schematic diagram of the depressurized state.
[0021] Figure 6 for Figure 5 Another schematic diagram. DETAILED DESCRIPTION
[0022] The present invention is further described in detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "upper, lower" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0023] like Figure 1-6 As shown, a high-voltage switch cabinet explosion-proof structure includes a cabinet body 1, the cabinet body includes a plurality of cabinet panels and cabinet doors, and a pressure relief protection component 2 is installed on the cabinet body.
[0024] The pressure relief protection assembly includes a mounting plate 11 and a pressure relief plate 12, an outer plate 13 is fixedly mounted on the mounting plate, a mounting groove is provided on the cabinet, the mounting plate is fixedly mounted on the inner side of the cabinet, and the outer plate is located in the mounting groove;
[0025] The pressure relief plate is located on the inner side of the mounting plate, and a plurality of pressure relief cylinders 4 arranged in a matrix are fixedly mounted on the pressure relief plate. The pressure relief cylinder is hollow, and a pressure relief groove 5 is penetrated in the circumference of the pressure relief cylinder. The mounting plate and the outer plate are penetrated by sliding holes that slide with the pressure relief cylinder, and the outer end of the pressure relief cylinder is closed. A pressure sensor 6 is fixedly mounted on the pressure relief plate, and an adsorption iron block 7 is fixedly mounted on the pressure relief plate facing the mounting plate. An electromagnet 8 capable of adsorbing the adsorption iron block is fixedly mounted on the mounting plate facing the pressure relief iron block.
[0026] In this way, the pressure inside the cabinet is detected by the pressure sensor. When it is detected that the pressure inside the cabinet exceeds the limit value, the pressure sensor transmits a signal to the external controller. The external controller controls the electromagnet to energize, and the electromagnet adsorbs the adsorption iron block, thereby driving the pressure relief plate to move closer to the mounting plate, and the pressure relief cylinder slides outward. Through the setting of the pressure relief groove, a passage is formed that is open inside and outside the cabinet, thereby providing pressure relief protection for the inside of the cabinet.
[0027] During implementation, the pressure relief plate is provided with a pressure relief port 9 directly opposite to the pressure relief cylinder to improve the pressure relief efficiency.
[0028] During implementation, the mounting plate is fixedly installed with a slide rod 10, the pressure relief plate is penetrated by a slide hole that slides with the slide rod, the slide rod passes through the slide hole and is fixedly installed with a limit block (not shown), the outer side of the slide rod is sleeved with a compression spring 11, and the compression spring is located between the mounting plate and the pressure relief plate.
[0029] In this way, when the pressure returns to normal, the electromagnet is powered off, releasing the adsorption of the adsorbed iron block. Under the action of the compression spring, the pressure relief plate is pushed to reset, and the slide bar supports and guides the movement of the pressure relief plate. After the pressure relief plate is reset, the pressure relief groove returns to the inside of the cabinet, blocking the airflow inside and outside the cabinet, thereby better preventing dust.
[0030] During implementation, the mounting plate is provided with a mounting hole 12, the cabinet is provided with a through hole, and bolts pass through the through hole and the mounting hole and are connected with nuts to fix the mounting plate and the cabinet, so as to facilitate installation.
[0031] During implementation, a rectangular sealing pad is provided between the mounting plate and the cabinet body to reduce dust entering the cabinet body.
[0032] Finally, it should be noted that those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.
Claims
1. An explosion-proof structure of a high-voltage switch cabinet, comprising a cabinet body, on which a pressure relief protection component is installed, characterized in that: The pressure relief protection assembly comprises a mounting plate and a pressure relief plate, an outer plate is fixedly mounted on the mounting plate, a mounting groove is provided on the cabinet, the mounting plate is fixedly mounted on the inner side of the cabinet, and the outer plate is located in the mounting groove; The pressure relief plate is located on the inner side of the mounting plate, and a plurality of pressure relief cylinders arranged in a matrix are fixedly mounted on the pressure relief plate. The pressure relief cylinder is hollow, and a pressure relief groove is arranged through the circumference of the pressure relief cylinder. The mounting plate and the outer plate are penetrated by sliding holes that slide with the pressure relief cylinder, and the outer end of the pressure relief cylinder is closed. A pressure sensor is fixedly mounted on the pressure relief plate, and an adsorption iron block is fixedly mounted on the pressure relief plate facing the mounting plate. An electromagnet that can adsorb the adsorption iron block is fixedly mounted on the mounting plate facing the pressure relief iron block.
2. The explosion-proof structure of a high-voltage switch cabinet according to claim 1, characterized in that: The pressure relief plate is provided with a pressure relief port directly opposite to the pressure relief cylinder.
3. The explosion-proof structure of a high-voltage switch cabinet according to claim 2, characterized in that: The mounting plate is fixedly mounted with a slide rod, the pressure relief plate is penetrated by a slide hole which is slidably matched with the slide rod, the slide rod passes through the slide hole and is fixedly mounted with a limit block, the outer side of the slide rod is sleeved with a compression spring, and the compression spring is located between the mounting plate and the pressure relief plate.
4. The explosion-proof structure of a high-voltage switch cabinet according to claim 1, characterized in that: The mounting plate is provided with a mounting hole, the cabinet is provided with a through hole, and bolts pass through the through hole and the mounting hole and are connected with nuts to fix the mounting plate and the cabinet.
5. The explosion-proof structure of a high-voltage switch cabinet according to claim 1, characterized in that: The mounting plate and the cabinet are provided with a rectangular sealing gasket.