Structural improvement device for anti-condensation high-pressure gas-insulated switchgear

Abstract

The invention discloses an anti-condensation high-pressure gas-insulated switchgear structure improvement device, and belongs to the technical field of high-pressure gas-insulated switchs.The anti-condensation high-pressure gas-insulated switchgear structure improvement device comprises a high-pressure gas-insulated switchgear body, a cabinet top is installed at the upper end of the high-pressure gas-insulated switchgear body, a rear plate is installed on the rear wall of the high-pressure gas-insulated switchgear body, the cabinet top is of an inclined structure with the front portion higher than the rear portion, and a flow guide plate and a water baffle are installed at the upper end of the rear plate; the flow guide plate and the water baffle are arranged in the cabinet top, and the flow guide plate is arranged between the water baffle and the side wall of the cabinet top; a front-high rear-low inclined top plate structure is used, directional diversion of condensate water is achieved through the synergistic effect of gravitational potential energy and surface tension, and the problem of top plate condensation retention is effectively solved; the liquidity of condensate water is obviously improved by reducing a water drop contact angle; a three-stage protection system of a rear drainage hole, a waterproof baffle and a diversion trench is integrated, directional drainage of accumulated water is achieved through fluid mechanics optimization design, it is ensured that a drainage path is physically isolated from a secondary loop, and the hidden danger of short circuit is eradicated.

Description

Technical Field

[0001] The invention belongs to the technical field of high-pressure gas charging cabinets, and in particular relates to a structural improvement device for an anti-condensation high-pressure gas charging cabinet. Background Art

[0002] Currently, high-voltage gas cabinets in high-humidity environments commonly experience condensation on the inner wall of the cabinet roof, caused by significant temperature differences between the inside and outside. Due to the heat exchange differential between the SF6 gas or dry air inside the cabinet and the external environment, when the external air humidity approaches saturation, the cabinet's outer wall temperature is significantly affected by the ambient temperature and humidity. Meanwhile, the inner wall of the cabinet roof, exposed to the cold gas inside (typically below the dew point of the ambient air), forms a continuous film of condensation. As the thermal cycle fluctuates due to the alternating daytime and nighttime temperature swings and intermittent equipment operation, this condensation gradually accumulates on the roof, forming droplets. When the accumulated water volume exceeds a critical threshold, it can fall along the cabinet's insulation supports or cable trays, directly soaking the secondary circuit instrument terminals. The formation of this liquid water conductive path not only significantly reduces the insulation resistance between terminals (from megohms to kiloohms), but can also induce phase-to-phase flashover or DC short-circuit faults, seriously threatening the safe and stable operation of the power distribution system.

[0003] Moreover, the traditional arc welding process is commonly used in the current manufacturing of inflatable cabinets for box assembly. Due to the thermal stress concentration caused by the local high-temperature heat input (up to 6000℃-8000℃) during the welding process, it is very easy to cause the stainless steel cabinet to produce structural deformation exceeding ±1.5mm, especially the wave-like distortion often occurs at the joints of thin plates. This process can also cause quality defects such as surface oxidation and blackening of the weld area and adhesion of spatter particles, requiring additional grinding and polishing steps. More seriously, the metal smoke (particle size <5μm) and ozone (O3 concentration can reach 0.3mg / m ) and nitrogen oxides (NOx about 20-50ppm) and other pollutants, not only make the instantaneous value of PM2.5 in the working environment exceed the standard by 3-5 times, but its arc radiation (ultraviolet intensity>100μW / cm²) also poses a risk of photochemical pollution, which is in significant conflict with the occupational exposure limit requirements of "GBZ 2.1-2019". Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an anti-condensation high-pressure inflatable cabinet structure improvement device.

[0005] The technical solution adopted by the present invention is as follows: a device for improving the structure of an anti-condensation high-pressure inflatable cabinet, comprising a high-pressure inflatable cabinet body, a cabinet top being installed at the upper end of the high-pressure inflatable cabinet body, a rear plate being installed at the rear wall, the cabinet top being an inclined structure with the front being high and the rear being low, a guide plate and a water baffle being installed at the upper end of the rear plate, the guide plate and the water baffle being both arranged inside the cabinet top, and the guide plate being arranged between the water baffle and the side wall of the cabinet top.

[0006] Among them, the outer wall of the cabinet top is movably connected to a magnetic part 1, and the inner wall of the cabinet top is movably connected to a magnetic part 2. The magnetic properties of the magnetic part 1 and the magnetic part 2 are different, and the magnetic part 1 and the magnetic part 2 are placed opposite to each other.

[0007] Wherein, a retracting member is installed on the second magnetic member, and the retracting member is an arc-shaped structure, which is convenient for collecting condensation water.

[0008] Among them, the outer wall of the cabinet top is provided with a slide groove 1, the inner wall of the cabinet top is provided with a slide groove 2, the magnetic part 1 is movably connected in the slide groove 1, and the magnetic part 2 is movably connected in the slide groove 2.

[0009] Among them, the inclination angle of the cabinet top is 15 degrees to 25 degrees, and the surface tension and gravity effects are used to make the condensation water formed on the inner wall of the top plate flow in a direction along the preset drainage slope, and finally converge to the area without secondary circuit terminals at the rear of the cabinet.

[0010] Among them, the cabinet top adopts sheet metal bending forming technology to achieve an integrated diversion slope, and the cabinet top is made of 304 stainless steel and undergoes hydrophilic surface treatment to ensure that condensed water quickly leaves the area where electrical components are densely populated.

[0011] A drainage hole is provided between the cabinet top side wall and the rear plate, and the drainage hole is connected to the water baffle; the condensation water on the cabinet top inner wall flows into the water baffle, and the accumulated water is guided by the water baffle to be discharged out of the cabinet through the reserved drainage hole.

[0012] Among them, the high-pressure inflatable cabinet body adopts a riveting assembly process, and achieves high-strength weld-free connection through self-piercing riveting and pressure riveting technology.

[0013] After adopting the above structure, the beneficial effects of the present invention are as follows: The use of a high front and low back inclined roof structure (15°-25°) breaks through the traditional flat roof design and uses the synergistic effect of gravitational potential energy and surface tension to achieve directional diversion of condensed water, effectively solving the problem of condensation retention on the roof.

[0014] The use of 304 stainless steel combined with hydrophilic surface treatment technology significantly improves the fluidity of condensed water by reducing the water droplet contact angle (<30°), and can achieve a drainage efficiency increase of more than 40% compared to ordinary metal surfaces. The seamless diversion slope is developed based on sheet metal bending forming technology to replace the traditional spliced diversion structure, reducing the risk of seam leakage by more than 90%, while reducing assembly complexity and manufacturing costs.

[0015] The three-level protection system integrates rear drainage holes, waterproof baffles, and guide grooves. Through fluid mechanics optimization design, it achieves directional drainage of accumulated water, ensures physical isolation of the drainage path from the secondary circuit, and eliminates short-circuit hazards. Through top plate structure optimization and linkage with the drainage system, the wet load in the cabinet is reduced by 30%-50%, and the relative humidity is stably controlled within the safe threshold of 85%. Compared with traditional dehumidification devices, it saves more than 60% energy and simultaneously improves the insulation strength of the equipment (up to 10^12Ω level).

[0016] The cabinet assembly process is innovated from conventional welding to riveting technology, and advanced chain fastening technologies such as self-piercing riveting and pressure riveting are adopted to achieve high-strength connection of components (riveting force ≥ welding strength), solve the pain point of welding deformation, and standardize the riveting system: by designing the matching relationship between rivet spacing-plate thickness-riveting parameters, standardized operating specifications are established to ensure connection consistency and structural stability.

[0017] Enhanced industrial design aesthetics and optimized surface quality: Eliminating welding thermal deformation (flatness ≤ ±0.5mm) and weld scar defects, combined with an array-like riveted point design, creates a flawless mirror finish on the cabinet surface, enhancing the product's high-end quality. Modular aesthetic design: Leveraging the flexibility of the riveting process, seamless integration of complex curved surfaces and functional modules is achieved, supporting customized exterior styling and overcoming the limitations of welding processes on structural design.

[0018] Green manufacturing emission reduction throughout the entire process: source pollution control, avoidance of ozone (O3), nitrogen oxides (NOx) and other gaseous pollutants generated by welding arcs (emission reduction rate > 90%), and elimination of the spread of particulate matter (PM2.5 / PM10); elimination of metal dust pollution caused by welding spatter (100% reduction compared to traditional processes); innovation of the painting process: since there is no need for weld repair, the amount of paint used is reduced by 30%-40%, and water-based environmentally friendly paint is used instead of oil-based paint, reducing volatile organic compound (VOCs) emissions by more than 80%; elimination of the welding masking process, reducing the consumption of masking materials and the generation of waste; elimination of light pollution: avoiding the impact of welding arc radiation (wavelength 200-400nm) on the operating environment, and improving the quality of the workshop light environment.

[0019] Improved production efficiency: The riveting process simplifies the process (reducing the working time per piece by 20%-30%) and reduces the rework rate (welding defect rate >5% vs. riveting defect rate <1%). Reduced operation and maintenance costs: There is no risk of weld corrosion, the cabinet's anti-corrosion life is extended by more than 30%, and the frequency of subsequent maintenance is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0021] Figure 1 This is a schematic diagram of the structure of an improved device for the structure of an anti-condensation high-pressure inflatable cabinet proposed by the present invention; Figure 2 This is a partial structural diagram of an improved device for the structure of an anti-condensation high-pressure inflatable cabinet proposed by the present invention. Figure 1 ; Figure 3 for Figure 2 A local enlarged view of point A; Figure 4 This is a partial structural diagram of an improved device for the structure of an anti-condensation high-pressure inflatable cabinet proposed by the present invention. Figure 2 ; Figure 5 for Figure 4 A local enlarged view of point B.

[0022] In the attached drawings: 1. High-pressure inflatable cabinet body, 2. Cabinet top, 3. Back plate, 4. Guide plate, 5. Water baffle, 6. Magnetic part 1, 7. Magnetic part 2, 8. Retracting part, 9. Chute 1, 10. Chute 2, 11. Drain hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0025] like Figure 1-Figure 5 As shown, a device for improving the structure of an anti-condensation high-pressure inflatable cabinet includes a high-pressure inflatable cabinet body 1, a cabinet top 2 is installed on the upper end of the high-pressure inflatable cabinet body 1, and a rear plate 3 is installed on the rear wall. The cabinet top 2 is an inclined structure with a high front and a low rear. A guide plate 4 and a water baffle 5 are installed on the upper end of the rear plate 3. The guide plate 4 and the water baffle 5 are both arranged in the cabinet top 2, and the guide plate 4 is arranged between the water baffle 5 and the side wall of the cabinet top 2.

[0026] The outer wall of the cabinet top 2 is movably connected to a magnetic piece 6, and the inner wall of the cabinet top 2 is movably connected to a magnetic piece 7. The magnetic properties of the magnetic piece 1 6 and the magnetic piece 2 7 are different, and the magnetic piece 1 6 and the magnetic piece 2 7 are placed opposite to each other.

[0027] A collecting member 8 is installed on the second magnetic member 7. The collecting member 8 is an arc-shaped structure, which is convenient for collecting condensation water.

[0028] The outer wall of the cabinet top 2 is provided with a slide groove 9, the inner wall of the cabinet top 2 is provided with a slide groove 2 10, the magnetic part 1 6 is movably connected in the slide groove 1 9, and the magnetic part 2 7 is movably connected in the slide groove 2 10.

[0029] The cabinet top 2 has an inclination angle of 15-25 degrees, and utilizes surface tension and gravity effects to make the condensation water formed on the inner wall of the top plate flow along the preset drainage slope, and finally converge to the area without secondary circuit terminals at the rear of the cabinet.

[0030] The cabinet top 2 adopts a sheet metal bending forming process to achieve an integrated guide slope, and the cabinet top 2 is made of 304 stainless steel and undergoes a hydrophilic surface treatment to ensure that condensed water quickly escapes from areas where electrical components are densely populated.

[0031] A drainage hole 11 is provided between the side wall of the cabinet top 2 and the rear plate 3, and the drainage hole 11 is connected to the water baffle 5; the condensation water on the inner wall of the cabinet top 2 flows into the water baffle 5, and is guided by the water baffle 5 to be discharged out of the cabinet through the reserved drainage hole 11.

[0032] The high-pressure inflatable cabinet body 1 adopts a riveting assembly process, and achieves a high-strength weld-free connection through self-piercing riveting and pressure riveting technology.

[0033] The specific usage is as follows: The two panels on the cabinet top are configured as an inclined structure with the front higher and the back lower (the recommended inclination angle is 15°-25°). Surface tension and gravity effects are used to direct condensation formed on the inner wall of the top panel along a preset drainage slope, ultimately converging to the rear area of the cabinet without secondary circuit terminals. An integrated diversion slope is achieved through optimized sheet metal bending processes. Combined with the hydrophilic surface treatment of 304 stainless steel, this ensures that condensation quickly escapes from areas densely populated with electrical components. A waterproof baffle and diversion groove are installed at the bottom of the rear of the cabinet to guide accumulated water out of the cabinet through the reserved drainage hole 11. If the temperature of the outer wall of the cabinet is greatly affected by the ambient temperature and humidity, professionals can, after wearing complete protective equipment, move the magnetic part 1 6 to drive the magnetic part 2 7 to move. The magnetic part 2 7 scrapes and collects the condensation water on the inner wall of the cabinet top 2, and the condensation water falls into the collection part 8 for collection. After the magnetic part 1 6 moves to the position of the guide plate 4, the magnetic part 1 6 can be repeatedly pushed. The magnetic part 1 6 drives the magnetic part 2 7 to shake, and the water in the collection part 8 is shaken to the guide plate 4, and discharged out of the cabinet through the reserved drainage hole 11.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents. In short, if those skilled in the art are inspired by the present invention and, without departing from the purpose of the present invention, design structures and embodiments similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. An anti-condensation high-pressure inflatable cabinet structure improvement device, characterized in that: It includes a high-pressure gas filling cabinet body, a cabinet top is installed on the upper end of the high-pressure gas filling cabinet body, and a back plate is installed on the back wall. The cabinet top is an inclined structure with high front and low back. A guide plate and a water baffle are installed on the upper end of the back plate. The guide plate and the water baffle are both arranged in the cabinet top, and the guide plate is arranged between the water baffle and the side wall of the cabinet top.

2. The anti-condensation high-pressure inflatable cabinet structure improvement device according to claim 1 is characterized in that: The outer wall of the cabinet top is movably connected with a magnetic component 1, and the inner wall of the cabinet top is movably connected with a magnetic component 2. The magnetic components 1 and 2 have different magnetic properties, and are placed opposite to each other.

3. The anti-condensation high-pressure inflatable cabinet structure improvement device according to claim 2, characterized in that: A folding member is installed on the second magnetic member, and the folding member is an arc-shaped structure.

4. The anti-condensation high-pressure inflatable cabinet structure improvement device according to claim 2, characterized in that: The outer wall of the cabinet top is provided with a slide groove 1, the inner wall of the cabinet top is provided with a slide groove 2, the magnetic component 1 is movably connected in the slide groove 1, and the magnetic component 2 is movably connected in the slide groove 2.

5. The anti-condensation high-pressure inflatable cabinet structure improvement device according to claim 1 is characterized in that: The cabinet top has an inclination angle of 15 degrees to 25 degrees.

6. The anti-condensation high-pressure inflatable cabinet structure improvement device according to claim 1, characterized in that: The cabinet top is formed by a sheet metal bending process and is made of 304 stainless steel.

7. The anti-condensation high-pressure inflatable cabinet structure improvement device according to claim 1, characterized in that: A drainage hole is provided between the cabinet top side wall and the rear plate, and the drainage hole is in continuous connection with the water baffle.

8. The anti-condensation high-pressure inflatable cabinet structure improvement device according to claim 1 is characterized in that: The high-pressure inflatable cabinet body is assembled by riveting.

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