Waterproof low-voltage cabinet closed air box

Abstract

The utility model discloses a waterproof low-voltage cabinet closed air box which comprises a box body. The isolation part comprises a protection assembly arranged at the top end of the box body, a sealing cover assembly arranged at the top end of the box body and a waterproof assembly arranged at the rear end of the box body, the isolation part is used for isolating the external environment and ensuring that internal elements are not affected, and the sealed gas box body is of a sealed structure formed by laser welding through a novel gas protection welding system. The strength, the precision and the air tightness of the box are ensured; the closed gas tank body adopts a sealing structure formed by laser welding through a novel gas shielded welding system, so that the strength, the precision and the gas tightness of the tank body are ensured. The sealing mode of an aluminum plate and an O-shaped sealing ring is adopted at the opening, so that the effects of fastening, durability and high waterproofness are achieved. The problem that healthy operation of the power equipment is threatened when the power equipment is complex in operation environment, affected with damp, soaked in water, rusted and the like is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of low-voltage switchgear technology, and more particularly to a waterproof low-voltage switchgear sealed air box. Background Technology

[0002] Waterproof low-voltage switchgear is a type of equipment used in low-voltage power distribution systems. Its main features include waterproofing, dustproofing, and corrosion resistance, making it suitable for indoor, outdoor, and humid environments. In harsh working environments, the gas tank in the low-voltage switchgear needs to be leak-proof and waterproofed. Simply filling it with gas for leak testing without actually filling it during use will allow water to enter, reducing insulation performance, damaging electrical equipment, and paralyzing the substation, causing line faults and tripping.

[0003] Currently, the protection level of electrical equipment in underground substations is generally low. The protection level of conventional low-voltage switchgear is IP40, which does not reach the IP68 protection level and cannot meet the requirements of the gas box of low-voltage switchgear to operate under water immersion conditions. Summary of the Invention

[0004] In view of the problems existing in the sealed air box of the existing waterproof low-pressure switchgear, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a waterproof, low-pressure, sealed air box.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a box body; an isolation component, which includes a protective component at the top of the box body, a sealing component at the top of the box body, and a waterproof component at the rear end of the box body, for isolating the external environment and ensuring that the internal components are not affected; the sealed air box body is a sealed structure formed by laser welding through a new gas-protected welding system, ensuring the strength, precision and airtightness of the box body.

[0007] As a preferred embodiment of the waterproof low-pressure switchgear sealed air box of the present invention, the protective component includes a waterproof door at the front end of the box body, a first mounting groove on the mounting side of the waterproof door, a first sealing ring on the outside of the first mounting groove, and busbar frames on both sides of the box body; wherein the first mounting groove cooperates with the first sealing ring.

[0008] As a preferred embodiment of the waterproof low-pressure switchgear sealed air box of the present invention, the busbar frame is provided with second mounting slots on both sides and a second sealing ring provided inside the second mounting slot; wherein the busbar frame is made of aluminum plate and is installed and fixed by bolts.

[0009] As a preferred embodiment of the waterproof low-pressure switchgear sealed air box of the present invention, the sealing assembly includes a top sealing plate disposed at the top of the box body, a third mounting groove disposed on the mounting side of the top sealing plate, a third sealing ring disposed inside the third mounting groove, and an explosion-proof membrane disposed on one side of the top sealing plate.

[0010] As a preferred embodiment of the waterproof low-pressure switchgear sealed air box of the present invention, wherein: a fourth mounting groove is provided on one side of the explosion-proof membrane, a fourth sealing ring is provided inside the fourth mounting groove, and the explosion-proof membrane is fixed to the box body by welding studs.

[0011] As a preferred embodiment of the waterproof low-pressure switchgear sealed air box of the present invention, the waterproof component includes a rear sealing plate disposed at the rear end of the box body, a fifth mounting groove disposed on the mounting side of the rear sealing plate, a fifth sealing ring disposed inside the fifth mounting groove, and a waterproof socket disposed on one side of the rear sealing plate.

[0012] As a preferred embodiment of the waterproof low-pressure switchgear sealed air box of the present invention, wherein: the waterproof socket is provided with mounting flanges at the four corners, the rear end of the box is provided with threaded holes, the mounting flange is fastened to the outside of the threaded holes by screws, the mounting flange is provided with a sixth mounting groove inside, and a sixth sealing ring is provided inside the sixth mounting groove.

[0013] As a preferred embodiment of the waterproof low-pressure switchgear sealed air box of the present invention, the waterproof door, busbar frame, top sealing plate, and rear sealing plate are all made of aluminum plate.

[0014] As a preferred embodiment of the waterproof low-pressure switchgear sealed air box of the present invention, the first sealing ring, the second sealing ring, the third sealing ring, the fourth sealing ring, the fifth sealing ring, and the sixth sealing ring are all of type 1 sealing ring.

[0015] As a preferred embodiment of the waterproof low-pressure switchgear sealed air box of the present invention, the protection level of the box body can reach [a certain level].

[0016] The beneficial effects of this invention are as follows: The sealed gas box body, through a novel gas-protected welding system and laser welding, achieves a sealed structure that ensures the strength, precision, and airtightness of the box. All openings utilize aluminum plates with O-rings for sealing, achieving a robust, durable, and highly waterproof effect. This effectively solves the problems of complex operating environments for power equipment, such as moisture, water immersion, and corrosion, which constantly threaten the healthy operation of power equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0018] Figure 1 This is a schematic diagram of the overall device of the present invention. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the overall device of the present invention. Figure 2 .

[0020] Figure 3 This is a schematic diagram of the waterproof door of the present invention.

[0021] Figure 4 This is a schematic diagram of the busbar frame of the present invention.

[0022] Figure 5 This is a schematic diagram of the top sealing plate of the present invention.

[0023] Figure 6 This is a schematic diagram of the explosion-proof film of the present invention.

[0024] Figure 7 This is a schematic diagram of the rear sealing plate of the present invention.

[0025] Figure 8 This is a schematic diagram of the waterproof socket of the present invention. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0030] Example 1

[0031] Reference Figure 1-6 A waterproof low-pressure switchgear sealed gas box is provided, including a box body 100; an isolation component 200, which includes a protective component 201 at the top of the box body 100, a cover component 202 at the top of the box body 100, and a waterproof component 203 at the rear end of the box body 100, for isolating the external environment and ensuring that the internal components are not affected. The sealed gas box body is laser-welded using a novel gas-protected welding system to ensure the strength, precision, and airtightness of the box body 100.

[0032] The enclosure 100 is made of stainless steel plate with a laser-welded sealing structure. The enclosure 100 isolates internal components through the isolation component 200, so that it can completely isolate smoke, dust, moisture and flood.

[0033] Specifically, the protective component 201 includes a waterproof door 201a located at the front end of the enclosure 100, a first mounting groove 201b located on the mounting side of the waterproof door 201a, a first sealing ring 201c located on the outside of the first mounting groove 201b, and busbar frames 201d located on both sides of the enclosure 100; wherein the first mounting groove 201b cooperates with the first sealing ring 201c.

[0034] First, the main frame of the enclosure 100 is welded using laser welding to ensure the strength, precision, and airtightness of the enclosure 100. The first sealing ring 201c is installed in the first mounting slot 201b of the waterproof door 201a. Then, the waterproof door 201a is installed on the welding studs of the front panel. The waterproof door 201a is then fixed to the front panel of the enclosure 100 by tightening with nuts and washers, achieving a sealing and waterproofing effect between the waterproof door 201a and the front panel of the enclosure 100.

[0035] Furthermore, the busbar frame 201d has second mounting slots 201e on both sides, and a second sealing ring 201f inside the second mounting slots 201e. The busbar frame 201d is made of aluminum plate and is fixed by bolts. First, the second sealing ring 201f is installed in the second mounting slots 201e of the busbar frame 201d. Then, the busbar frame 201d is installed at the opening of the side plate of the enclosure 100. The busbar frame 201d is fixed to the side plate of the enclosure 100 by tightening the bolts to ensure the sealing between the busbar frame 201d on both sides and the side plate.

[0036] Furthermore, the cover assembly 202 includes a top sealing plate 202a disposed at the top of the housing 100, a third mounting slot 202b disposed on the mounting side of the top sealing plate 202a, a third sealing ring 202c disposed inside the third mounting slot 202b, and an explosion-proof membrane 202d disposed on one side of the top sealing plate 202a. The third sealing ring 202c is placed in the third mounting slot 202b of the top sealing plate 202a, and then the top sealing plate 202a is installed on the welding stud at the top of the housing 100. Finally, the top sealing plate is fixed to the top of the housing 100 by nuts and washers.

[0037] Furthermore, a fourth mounting groove 202e is provided on one side of the explosion-proof membrane 202d, and a fourth sealing ring 202f is provided inside the fourth mounting groove 202e. The explosion-proof membrane 202d is installed and fixed on the enclosure 100 by welding studs. The fourth sealing ring 202f is installed in the fourth mounting groove 202e of the explosion-proof membrane 202d. Then, the explosion-proof membrane 202d is installed on the welding studs on the top of the enclosure 100. The explosion-proof membrane 202d is installed and fixed on the top of the enclosure 100 by nuts to prevent water from flowing into the enclosure 100 from the top and causing damage to the internal components.

[0038] Example 2

[0039] Reference Figure 1-8 This embodiment differs from the first embodiment in that the waterproof component 203 includes a rear sealing plate 203a located at the rear end of the enclosure 100, a fifth mounting slot 203b located on the mounting side of the rear sealing plate 203a, a fifth sealing ring 203c located inside the fifth mounting slot 203b, and a waterproof socket 203d located on one side of the rear sealing plate 203a. The fifth sealing ring 203c is installed in the fifth mounting slot 203b of the rear sealing plate 203a, and then the rear sealing plate 203a is installed on the welding studs of the cable partition. Finally, the upper sealing plate is fixed to the cable partition at the rear of the enclosure 100 by nuts and washers.

[0040] Specifically, the waterproof socket 203d has mounting flanges 203e at its four corners, and the rear end of the housing 100 has threaded holes 203f. The mounting flanges 203e are fastened to the outside of the threaded holes 203f with screws. The mounting flanges 203e have a sixth mounting groove 203g inside, and a sixth sealing ring 203h is installed inside the sixth mounting groove 203g. The sixth sealing ring 203h is installed in the sixth mounting groove 203g of the mounting flange 203e of the waterproof socket 203d to achieve the sealing and waterproofing effect between the socket assembly and the cable partition. The flange is installed on the cable partition by fastening screws.

[0041] The rest of the structure is the same as in Example 1.

[0042] Example 3

[0043] Reference Figure 1-8 The difference between this embodiment and the previous embodiment is that the waterproof door 201a, busbar frame 201d, top sealing plate 202a, and rear sealing plate 203a are all made of aluminum plate. Aluminum plate is relatively light and easy to install.

[0044] Specifically, O-rings are used for sealing. The main advantages of O-rings over other sealing rings include: wide applicability, simple manufacturing and installation requirements, good quality stability, low cost, and ease of use.

[0045] O-rings have a very wide range of applications, covering almost all mechanical industries, and can be used for both static and dynamic sealing. Due to their long history of use, their quality and stability are relatively guaranteed, especially under high requirements for waterproof and dustproof performance, where their reliability far exceeds that of other sealing methods.

[0046] The manufacturing and installation requirements for O-rings are relatively simple. Existing industry manufacturing technologies are fully capable of producing O-rings at a low cost. They also offer good quality stability, unlike some sealing structures that require expensive equipment and complex processes.

[0047] O-rings offer excellent quality stability, preventing leaks and spills caused by gas and liquid seal failures. Under stringent testing requirements, the design of O-rings has become increasingly rigorous, ensuring their reliability.

[0048] Furthermore, the enclosure 100 has an IP68 protection rating.

[0049]

[0050]

[0051] The rest of the structure is the same as in Example 2.

[0052] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0053] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0054] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A sealed gas tank for a waterproof low-voltage cabinet, characterized by: The utility model relates to a kind of waterproof box, including, Box (100); Isolated component (200), including the protective assembly (201) being arranged at the top end of the box (100), the cover assembly (202) being arranged at the top end of the box (100), and the waterproof assembly (203) being arranged at the rear end of the box (100); Box (100) uses material is stainless steel plate laser welding sealing structure; The protective assembly (201) includes waterproof door (201a) being arranged at the front end of the box (100), first installation slot (201b) being arranged at the installation side of the waterproof door (201a), first sealing ring (201c) being arranged at the outside of the first installation slot (201b); Wherein, the first installation slot (201b) is matched with first sealing ring (201c); Busbar frame (201d) being arranged at the both sides of the box (100), second installation slot (201e) being provided at the both sides of the busbar frame (201d), and second sealing ring (201f) being arranged in the second installation slot (201e); The cover assembly (202) includes top sealing plate (202a) being arranged at the top end of the box (100), third installation slot (202b) being arranged at the installation side of the top sealing plate (202a), third sealing ring (202c) being arranged at the inside of the third installation slot (202b), and explosion-proof membrane (202d) being arranged at one side of the top sealing plate (202a); One side of the explosion-proof membrane (202d) is provided with fourth installation slot (202e), and fourth sealing ring (202f) is arranged in the inside of the fourth installation slot (202e); The waterproof assembly (203) includes rear sealing plate (203a) being arranged at the rear end of the box (100), fifth installation slot (203b) being arranged at the installation side of the rear sealing plate (203a), and fifth sealing ring (203c) being arranged in the inside of the fifth installation slot (203b); Waterproof socket (203d) being arranged at one side of the rear sealing plate (203a), mounting flange (203e) is provided at the four corners of the waterproof socket (203d), sixth installation slot (203g) is opened in the inside of the mounting flange (203e), and sixth sealing ring (203h) is arranged in the inside of the sixth installation slot (203g); The first sealing ring (201c), the second sealing ring (201f), the third sealing ring (202c), the fourth sealing ring (202f), the fifth sealing ring (203c) and the sixth sealing ring (203h) all adopt O-shaped sealing ring.

2. The sealed gas tank of the waterproof low-voltage cabinet according to claim 1, characterized in that: The busbar frame (201d) adopts aluminum plate, and is installed and fixed by bolt.

3. The sealed gas tank of the waterproof low-voltage cabinet according to claim 2, characterized in that: The explosion-proof membrane (202d) is installed and fixed on the box (100) by welding stud.

4. The sealed gas tank of the waterproof low-voltage cabinet according to claim 3, characterized in that: Threaded hole (203f) is provided at the rear end of the box (100), and the mounting flange (203e) is fastened outside the threaded hole (203f) by screw.

5. The sealed gas tank of the waterproof low-voltage cabinet according to claim 4, characterized in that: The waterproof door (201a), the busbar frame (201d), the top sealing plate (202a) and the rear sealing plate (203a) are all made of aluminum plate.

6. The sealed gas tank of the waterproof low-voltage cabinet according to claim 5, characterized in that: The protection class of the box (100) can reach IP68.

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