Power box with compensation type sealing structure

Abstract

The utility model provides a power box with a compensation type sealing structure, which belongs to the technical field of power boxes and comprises a box body and a box door, the box body is connected with the box door through a hinge, a groove is arranged at the edge of the inner side of a door frame of the box body, and the box door is connected with the groove. A groove is formed in the box door, a compensation assembly is arranged at the joint of the box body and the box door, the compensation assembly comprises a sealing ring, a corrugated pipe and an expansion joint, the sealing ring is matched with the groove, the sealing ring and the box door form linear sealing, and the corrugated pipe and the expansion joint are arranged in the length direction of the joint of the box body and the box door. The two ends of the box cover are respectively fixed on the box body and the box door; a guide structure is arranged at the joint of the box body and the box door, the guide structure is used for guiding the compensation assembly to make contact with the joint face of the box door and the joint face, the corrugated pipe and the telescopic joint are arranged in series, and the defect that a traditional power box body structure lacks flexibility is overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of power boxes, and in particular relates to a power box with a compensating sealing structure. Background Art

[0002] The power box, also known as the distribution box or distribution cabinet, is an indispensable device in the power system. It is mainly used to collect and distribute electric energy and realize the control, protection and measurement of the circuit. The power box is usually composed of a box, a circuit breaker, a busbar system, a switch element, an electric energy metering device, a grounding and protection device, an auxiliary element and other components. It is widely used in residential areas, commercial buildings, industrial facilities, public facilities and other fields to ensure the safe, stable and efficient operation of the power system. The traditional power box design is mainly to meet the basic electrical functions, but there are some disadvantages in terms of installation convenience. First of all, the box structure of the traditional power box is often relatively fixed and lacks flexibility, resulting in poor adaptability in specific installation environments. For example, in the face of narrow space, complex terrain, special installation height and other situations, the traditional power box may bring great difficulties to the installation work due to its large size, fixed shape and single installation method. Installers often need to use special tools and perform a lot of cutting, welding and other operations, which is not only time-consuming and labor-intensive, but may also damage the structure of the power box and affect its long-term stable operation.

[0003] Secondly, the ability of traditional power boxes to cope with changes in the installation environment, equipment upgrades, and capacity expansion is relatively limited. Once changes are required, the box often needs to be redesigned and customized, resulting in a waste of resources. Thirdly, traditional power boxes are insufficient in coping with the impact of environmental factors. After long-term outdoor use or in harsh environments, the outer shell of the power box is prone to rust and deformation, resulting in a decrease in the protection level and affecting the normal operation of the internal electrical components. At the same time, the reduction in sealing performance makes it easier for harmful substances such as moisture and dust to invade the box, increasing the risk of electrical failure. Utility Model Content

[0004] In view of this, the utility model provides a power box with a compensating sealing structure, which solves the disadvantage of the lack of flexibility of the box body structure of the traditional power box and improves the adaptability of the power box.

[0005] The utility model is achieved in this way:

[0006] The utility model provides an electric box with a compensating sealing structure, comprising a box body and a box door, wherein the box body and the box door are connected by a hinge, a groove is provided on the inner edge of the door frame of the box body, a compensating component is provided at the joint between the box body and the box door, the compensating component comprises a sealing ring, a bellows, and an expansion joint, the sealing ring is embedded in the box body and matches the groove, the sealing ring forms a line seal with the box door, the bellows and the expansion joint are arranged along the length direction of the joint between the box body and the box door, and the two ends are respectively fixed to the box body and the box door;

[0007] Wherein, a guide structure is provided at the joint portion between the box body and the box door, and the guide structure is used to guide the compensation component to contact the box door and the joint surface.

[0008] On the basis of the above technical solution, the power box of the utility model with a compensating sealing structure can also be improved as follows:

[0009] The bellows and the expansion joint are arranged in series and at intervals, and the sealing rings are arranged on both sides of the bellows and the expansion joint.

[0010] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the sealing strip is used as an auxiliary sealing measure to enhance the sealing effect at the joint between the box body and the box door, prevent gap leakage, and further improve the overall sealing performance of the power box.

[0011] Furthermore, the bellows is formed by two layers of inner and outer metal thin-walled tubes connected to each other through corrugated folds.

[0012] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the bellows structure has a high axial and radial compensation capability, is suitable for deformation of the box body in a large range or in complex directions, and ensures the sealing integrity of the power box under various working conditions.

[0013] Furthermore, the telescopic joint is composed of a plurality of tubular segments which are sleeved together, radially sliding sealing rings are provided between adjacent tubular segments, and the wall thickness of the tubular segments changes gradually along the length direction.

[0014] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the telescopic joint structure can effectively compensate for the axial micro-deformation of the box body and maintain the sealing continuity; the sealing rings between adjacent segments ensure the sealing performance of the connection between the segments and prevent medium leakage.

[0015] Furthermore, the wall thickness of the tubular segment gradually increases as the distance along the length direction increases. Specifically, the wall thickness of the tubular segment close to the fixed end of the telescopic joint is thinner, and the wall thickness increases as it extends away from the fixed end toward the free end.

[0016] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: This gradient wall thickness design is intended to optimize the stress distribution during radial expansion and contraction, so that during the expansion and contraction process, each part of the tubular segment can more evenly withstand the internal and external pressure difference, avoiding deformation or damage caused by excessive local stress. At the same time, the gradient wall thickness can also help adjust the stiffness distribution of the expansion joint, making the response of the expansion joint in different expansion and contraction states more stable and controllable.

[0017] Furthermore, the bellows, the telescopic joint and the box are connected via snap fasteners. Specifically, the box is provided with a bayonet, and the bellows and the telescopic joint are correspondingly provided with a snap fastener structure, and the snap fastener structure includes a hook-shaped tenon and an elastic snap fastener.

[0018] Furthermore, the bellows, the expansion joint and the box are connected by screws. Specifically, the box is provided with threaded holes, and the bellows and the expansion joint are correspondingly provided with fasteners, and the fasteners include screws and nuts.

[0019] Furthermore, the guide structure includes a guide groove, a guide key, a guide pin and a guide roller. The guide groove is arranged on the door frame of the box body, and the guide key is correspondingly arranged on the box door. The box body and the box door are provided with mutually cooperating guide pins and positioning holes, and the guide roller is installed on the side of the box door.

[0020] Furthermore, the maximum deformation of the compensation component is between ±3% and ±5%, and the maximum expansion and contraction range is between ±4.5% and ±10%.

[0021] Furthermore, the sealing ring is made of rubber material, and its cross-sectional shape is U-shaped, O-shaped, rectangular or special-shaped, and a dustproof lip is provided on the inner side.

[0022] The beneficial effects of adopting the above-mentioned improvement scheme are: ensuring that the elastic sealing ring maintains good elasticity and sealing performance under various environmental conditions, and the dustproof lip design further enhances the blocking effect on dust and impurities, thereby improving the protection level of the power box.

[0023] Compared with the prior art, the utility model provides a power box with a compensating sealing structure, which has the following beneficial effects:

[0024] Effectively deal with micro-deformation of the box and maintain a high sealing level: The utility model adopts elastic sealing rings, expansion joints or bellows structures as retractable compensating sealing components, which can self-adjust with the micro-deformation caused by long-term use of the box or environmental factors, and always maintain effective sealing with the joint surface of the box door to prevent moisture, dust, etc. from entering, and protect the working environment of the internal electrical components;

[0025] Enhanced sealing adaptability and effectiveness: According to actual working conditions and sealing requirements, different retractable compensating sealing components, such as elastic sealing rings, expansion joints, bellows, etc., can be flexibly selected and combined to achieve diversified and targeted sealing effects, and improve the adaptability of the power box to various environmental conditions and deformation conditions;

[0026] Improve the weather resistance and dustproof performance of the sealing component: The elastic sealing ring is made of rubber material with excellent weather resistance and is equipped with a dustproof lip to ensure good elasticity and sealing performance under various environmental conditions, effectively block the intrusion of dust and impurities, and improve the protection level of the power box;

[0027] Ensure sealing continuity and prevent medium leakage: The expansion joint structure realizes axial expansion and contraction through multiple mutually sleeved tubular segments, and radially sliding sealing rings are provided between adjacent segments to ensure the sealing performance of the connection between the segments and prevent medium leakage;

[0028] Provides deformation compensation in a larger range or in complex directions: The bellows structure consists of two layers of thin-walled metal tubes connected to each other through corrugated folds. It has high axial and radial compensation capabilities, ensuring that the power box can maintain good sealing integrity under deformation in a larger range or in complex directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 This is an example diagram of a power box with a compensating seal structure;

[0031] Figure 2 This is an example diagram of a compensation component of a power box with a compensating seal structure;

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 10. Box body; 20. Box door; 30. Compensation assembly; 31. Sealing ring; 32. Bellows; 33. Expansion joint. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention.

[0035] like Figure 1 , Figure 2 As shown, it is a first embodiment of a power box of a compensating sealing structure provided by the utility model. In this embodiment, it includes a box body 10 and a box door 20, wherein the box body 10 and the box door 20 are connected by a hinge, and a groove is provided at the inner edge of the door frame of the box body 10, and a compensation component 30 is provided at the joint of the box body 10 and the box door 20. The compensation component 30 includes a sealing ring 31, a bellows 32, and an expansion joint 33. The sealing ring 31 is embedded in the box body 10 and matches the groove. The sealing ring 31 and the box door 20 form a line seal. The bellows 32 and the expansion joint 33 are arranged along the length direction of the joint of the box body 10 and the box door 20, and the two ends are fixed to the box body 10 and the box door 20 respectively;

[0036] A guide structure is provided at the joint between the box body 10 and the box door 20 , and the guide structure is used to guide the compensation component 30 to contact the joint surface between the box door 20 and the joint surface.

[0037] "Compensated" means that the seal structure has the following two key properties:

[0038] Scalability or deformation ability: This structure includes components such as elastic sealing rings, expansion joints, and bellows, which have certain elasticity and expansion and contraction deformation capabilities. For example, the elastic sealing ring can adapt to small changes in the joint surface through the elastic deformation of the material itself; the expansion joint compensates for deformation through the axial expansion and contraction of the internal tubular segment and the radial sealing ring; the bellows uses its corrugated folds to achieve axial and radial expansion and contraction to adapt to the deformation of the box in a larger range or complex directions. These expandable components can self-adjust when the box is slightly deformed, ensuring that they always maintain close contact with the door or joint surface to maintain the sealing effect.

[0039] Compensation: The purpose of this sealing structure design is to "compensate" for the slight deformation that may occur in the box, so as to overcome the sealing failure problem that may occur in the traditional fixed sealing structure when dealing with deformation. By adopting the above-mentioned retractable elements, even if the box undergoes slight changes due to factors such as thermal expansion and contraction, mechanical vibration, long-term load-bearing, material aging, etc., the compensating sealing structure can adjust in real time to adapt to these changes by deforming or expanding itself, maintaining sealing contact with the joint surface of the box or the door, and effectively preventing the degradation of sealing performance.

[0040] Among them, in the above technical solution, the bellows and the expansion joint are arranged in series and at intervals, and sealing rings are arranged on both sides of the bellows and the expansion joint.

[0041] Furthermore, in the above technical solution, the bellows 32 is formed by two layers of inner and outer metal thin-walled tubes connected to each other through corrugated folds.

[0042] Furthermore, in the above technical solution, the telescopic joint 33 is composed of a plurality of tubular segments which are sleeved together, radially sliding sealing rings are provided between adjacent tubular segments, and the wall thickness of the tubular segment changes gradually along the length direction.

[0043] Furthermore, in the above technical solution, the wall thickness of the tubular segment gradually increases as the distance along the length direction increases. Specifically, the wall thickness of the tubular segment close to the fixed end of the telescopic joint 33 is thinner, and the wall thickness increases as it extends away from the fixed end toward the free end.

[0044] Furthermore, in the above technical solution, the bellows 32, the telescopic joint 33 and the box body 10 are connected by snaps. Specifically, the box body 10 is provided with a bayonet, and the bellows 32 and the telescopic joint 33 are correspondingly provided with a snap structure, and the snap structure includes a hook-shaped tenon and an elastic snap.

[0045] When in use, a corresponding buckle structure is designed on the box body, door or sealing component, such as a hook-shaped buckle, elastic buckle, etc. When installing, align the buckle part of the sealing component with the bayonet on the box body or door, and firmly buckle it by pressing, rotating or pushing and pulling to form a stable connection.

[0046] Furthermore, in the above technical solution, the guide structure includes a guide groove, a guide key, a guide pin and a guide roller. The guide groove is arranged at the door frame of the box body 10, and the guide key is correspondingly arranged on the box door 20. The box body 10 and the box door 20 are provided with guide pins and positioning holes that cooperate with each other, and the guide roller is installed on the side of the box door 20.

[0047] Furthermore, in the above technical solution, the maximum deformation of the compensation component 30 is between ±3% and ±5%, and the maximum expansion and contraction range is between ±4.5% and ±10%.

[0048] Furthermore, in the above technical solution, the sealing ring 31 is made of rubber material, and its cross-sectional shape is U-shaped, O-shaped, rectangular or special-shaped, and a dustproof lip is provided on the inner side.

[0049] like Figure 1 As shown, it is a second embodiment of a power box of a compensating sealing structure provided by the utility model. In this embodiment, it includes a box body 10 and a box door 20, wherein the box body 10 and the box door 20 are connected by a hinge, and a groove is provided at the inner edge of the door frame of the box body 10, and a compensation component 30 is provided at the joint of the box body 10 and the box door 20. The compensation component 30 includes a sealing ring 31, a bellows 32, and an expansion joint 33. The sealing ring 31 is embedded in the box body 10 and matches the groove. The sealing ring 31 and the box door 20 form a line seal. The bellows 32 and the expansion joint 33 are arranged along the length direction of the joint of the box body 10 and the box door 20, and the two ends are fixed to the box body 10 and the box door 20 respectively;

[0050] A guide structure is provided at the joint between the box body 10 and the box door 20 , and the guide structure is used to guide the compensation component 30 to contact the joint surface between the box door 20 and the joint surface.

[0051] Among them, in the above technical solution, the bellows and the expansion joint are arranged in series and at intervals, and sealing rings are arranged on both sides of the bellows and the expansion joint.

[0052] Series arrangement: The expansion joint and the bellows can be arranged in series, that is, connected one after another to form a multi-stage compensation system. For example, the bellows absorb most of the deformation first, and then the expansion joint finely compensates for the remaining deformation, ensuring good sealing performance within a large deformation range.

[0053] Furthermore, in the above technical solution, the bellows 32 is formed by two layers of inner and outer metal thin-walled tubes connected to each other through corrugated folds.

[0054] Furthermore, in the above technical solution, the telescopic joint 33 is composed of a plurality of tubular segments which are sleeved together, radially sliding sealing rings are provided between adjacent tubular segments, and the wall thickness of the tubular segment changes gradually along the length direction.

[0055] Furthermore, in the above technical solution, the wall thickness of the tubular segment gradually increases as the distance along the length direction increases. Specifically, the wall thickness of the tubular segment close to the fixed end of the telescopic joint 33 is thinner, and the wall thickness increases as it extends away from the fixed end toward the free end.

[0056] The bellows 32 and the expansion joint 33 are connected to the box body 10 by screws. Specifically, the box body 10 is provided with threaded holes, and the bellows 32 and the expansion joint 33 are correspondingly provided with fasteners, which include screws and nuts.

[0057] When in use, pre-fabricate threaded holes or mounting holes on the box body, door or sealing assembly, and use screws, nuts and other fasteners to fix the sealing assembly at the joint between the box body and the door. For the elastic sealing ring, auxiliary parts such as pressure rings and flanges may need to be used in conjunction to ensure that the sealing ring is subjected to uniform pressure when tightening the screws to form a reliable seal.

[0058] Furthermore, in the above technical solution, the guide structure includes a guide groove, a guide key, a guide pin and a guide roller. The guide groove is arranged at the door frame of the box body 10, and the guide key is correspondingly arranged on the box door 20. The box body 10 and the box door 20 are provided with guide pins and positioning holes that cooperate with each other, and the guide roller is installed on the side of the box door 20.

[0059] Furthermore, in the above technical solution, the maximum deformation of the compensation component 30 is between ±3% and ±5%, and the maximum expansion and contraction range is between ±4.5% and ±10%.

[0060] Furthermore, in the above technical solution, the sealing ring 31 is made of rubber material, and its cross-sectional shape is U-shaped, O-shaped, rectangular or special-shaped, and a dustproof lip is provided on the inner side.

[0061] Specifically, the principle of the utility model is:

[0062] Design of retractable compensating sealing components: using elastic sealing rings, expansion joints or bellows structures, these components have good elasticity and scalability, can self-adjust with the slight deformation of the box body, and always maintain effective sealing with the joint surface of the box door. The elastic sealing ring achieves sealing through material elasticity and dustproof lip; the expansion joint achieves compensation and sealing through axial expansion and contraction of the tubular segment and radial sealing ring; the bellows structure achieves axial and radial expansion and contraction through corrugated folds to maintain sealing continuity;

[0063] Diverse sealing component connection methods: The retractable compensating sealing component can be firmly fixed at the joint between the box body and the door through embedded installation, bonding, snap connection or screw fixing, ensuring the connection stability between the sealing component and the box body and door, and adapting to different installation conditions and material requirements;

[0064] Guide structure design: A guide structure, such as a guide groove, guide key, guide pin, guide roller, guide rail, etc., is set at the joint between the box body and the door to guide the door to open and close smoothly and accurately, avoid damage to the sealing components during operation, and ensure the long-term stability of the sealing performance.

Claims

1. A power box with a compensating sealing structure, comprising a box body (10) and a box door (20), characterized in that: The box body (10) and the box door (20) are connected via a hinge; a groove is provided on the inner edge of the door frame of the box body (10); a compensation component (30) is provided at the joint between the box body (10) and the box door (20); the compensation component (30) comprises a sealing ring (31), a bellows (32), and an expansion joint (33); the sealing ring (31) is embedded in the box body (10) and matches the groove; the sealing ring (31) and the box door (20) form a line seal; the bellows (32) and the expansion joint (33) are arranged along the length direction of the joint between the box body (10) and the box door (20), and the two ends are fixed to the box body (10) and the box door (20) respectively; Wherein, a guide structure is provided at the joint portion between the box body (10) and the box door (20), and the guide structure is used to guide the compensation component (30) to contact the joint surface between the box door (20) and the joint surface.

2. The power box with a compensating seal structure according to claim 1, characterized in that: The bellows (32) and the telescopic joint (33) are arranged in series and at intervals, and the sealing rings (31) are arranged on both sides of the bellows (32) and the telescopic joint (33).

3. The power box with a compensating seal structure according to claim 2, characterized in that: The bellows (32) is formed by two layers of inner and outer metal thin-walled tubes connected to each other via corrugated folds.

4. The power box with a compensating seal structure according to claim 3, characterized in that: The telescopic joint (33) is composed of a plurality of tubular segments which are sleeved together, and radially sliding sealing rings are provided between adjacent tubular segments. The wall thickness of the tubular segments changes gradually along the length direction.

5. The power box with a compensating seal structure according to claim 4, characterized in that: The wall thickness of the tubular segment gradually increases as the distance along the length direction increases. Specifically, the wall thickness of the tubular segment close to the fixed end of the telescopic joint (33) is relatively thin, and the wall thickness increases as it extends away from the fixed end toward the free end.

6. The power box with a compensating seal structure according to claim 5, characterized in that: The bellows (32), the telescopic joint (33) and the box body (10) are connected via a snap fastener. Specifically, the box body (10) is provided with a bayonet, and the bellows (32) and the telescopic joint (33) are correspondingly provided with a snap fastener structure, and the snap fastener structure comprises a hook-shaped tenon and an elastic snap fastener.

7. The power box with a compensating seal structure according to claim 6, characterized in that: The bellows (32) and the telescopic joint (33) are connected to the box (10) by means of screws. Specifically, the box (10) is provided with threaded holes, and the bellows (32) and the telescopic joint (33) are correspondingly provided with fasteners, and the fasteners include screws and nuts.

8. The power box with a compensating seal structure according to claim 7, characterized in that: The guide structure comprises a guide groove, a guide key, a guide pin and a guide roller. The guide groove is arranged on the door frame of the box body (10), and the guide key is arranged on the box door (20) accordingly. The box body (10) and the box door (20) are provided with guide pins and positioning holes that cooperate with each other, and the guide roller is installed on the side of the box door (20).

9. The power box with a compensating seal structure according to claim 8, characterized in that: The maximum deformation of the compensation component (30) is between ±3% and ±5%, and the maximum expansion range is between ±4.5% and ±10%.

10. The power box with a compensating seal structure according to claim 9, characterized in that: The sealing ring (31) is made of rubber material, has a U-shaped, O-shaped, rectangular or special-shaped cross-section, and is provided with a dustproof lip on the inner side.

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