CN-224217930-U - Electric energy metering box with multi-channel sealing structure

Abstract

The utility model belongs to the field of electric energy metering boxes, and particularly relates to an electric energy metering box with a multi-channel sealing structure, which comprises a box body and a box door hinged on the box body, wherein a door frame is arranged on the box body, at least two mutually independent and parallel sealing strip mounting structures are arranged on the door frame along the closing circumference, a first sealing strip and a second sealing strip are respectively embedded in the sealing strip mounting structures, when the box door is closed, the first sealing strip and the second sealing strip are compressed, at least two continuous sealing barriers which are sequentially arranged along the medium invasion direction are formed between the box door and the door frame, and the utility model adopts at least two independent sealing barriers to form a physical isolation area.

Inventors

• HUANG MENGZHOU
• KE YONG
• WANG ZHENG
• HU LINGLING
• JIN MIAO
• SHI FENGYI

Assignees

• 浙江远能电力科技有限公司

Dates

Publication Date

20260508

Application Date

20260409

Claims (9)

1. 1. The electric energy metering box with the multi-channel sealing structure comprises a box body and a box door hinged on the box body, wherein a door frame is arranged on the box body; when the door is closed, the first sealing strip and the second sealing strip are compressed, and at least two continuous sealing barriers which are sequentially arranged along the medium invasion direction are formed between the door and the door frame.
2. 2. The electric energy metering box with the multi-channel sealing structure of claim 1, wherein the first sealing strip is a solid sealing strip with a round or oval cross section to form a main sealing barrier, and the second sealing strip is a sealing strip with a D-shaped or P-shaped cross section to form a secondary sealing barrier.
3. 3. The electric energy meter box with multi-seal structure according to claim 2, wherein the first sealing strip and the second sealing strip are different in material and/or hardness.
4. 4. The electric energy metering box with the multi-channel sealing structure of claim 3, wherein the first sealing strip is made of ethylene propylene diene monomer rubber, and the second sealing strip is made of silicon rubber.
5. 5. The electric energy meter box with multi-channel sealing structure as set forth in any one of claims 1-4, wherein a third sealing structure is further provided in a sealing area between the first sealing strip and the second sealing strip, and the third sealing structure is a comb-tooth-shaped or fin-shaped physical barrier strip fixed on the box door.
6. 6. The electric energy meter box with multi-seal structure according to claim 1, wherein a guide slope is provided on a sealing surface of the door frame, the guide slope being configured to guide a displacement of the door and to convert a closing force into a vertical compression force against the first seal strip and the second seal strip during closing of the door.
7. 7. The electric energy metering box with the multi-channel sealing structure of claim 1, wherein at least one drainage micropore leading to the outside of the box body is formed at the bottom of an isolation cavity formed by the first sealing strip and the second sealing strip.
8. 8. The electric energy meter box with multi-seal structure of claim 1, wherein the at least two seal strip mounting structures are a first seal groove and a second seal groove which are arranged on a door frame, the seal strips are arranged on the door frame, and the seal strips are arranged on the door frame The first sealing strip and the second sealing strip are correspondingly embedded in the first sealing groove and the second sealing groove respectively.
9. 9. The electric energy metering box with the multi-channel sealing structure of claim 1, wherein the box door is provided with a multi-point linkage locking mechanism for synchronously applying balanced pressing force at a plurality of positions along the circumferential direction of the box door when the box door is closed.

Description

Electric energy metering box with multi-channel sealing structure Technical Field The utility model belongs to the technical field of electric energy metering boxes, and particularly relates to an electric energy metering box with a multi-channel sealing structure. Background The electric energy metering box is a key infrastructure for installing metering equipment such as an electric energy meter, a transformer and the like in a power grid, and is widely installed in diverse environments such as the open air, a basement, a corridor and the like. The sealing performance of the device is directly related to the safety, stable operation and metering accuracy of the internal precise electric element. The electric energy metering box in the prior art commonly adopts a single sealing strip (most rubber strips) to realize the sealing between the box door and the box body. The single sealing mode has obvious defects that firstly, under long-term sun and rain and temperature circulation, the sealing strip is easy to age and deform, so that elasticity is reduced, sealing gaps appear, secondly, the protection capability for tiny dust, moist air and even small insects is limited, particularly in sand dust, coastal salt fog or plum rain areas, the single sealing is difficult to meet the requirement of long-term high protection level (such as IP54 and above), and finally, if the box door is not uniformly stressed, the sealing strip is easy to partially compress, so that leakage points are generated. Therefore, there is a need for an electrical energy metering box sealing scheme that is more reliable, has a longer life, and can accommodate harsh environments. Disclosure of utility model The utility model aims to overcome the defects and the shortcomings of the prior art and provide the electric energy metering box with the multi-channel sealing structure, which has the advantages of more reliable sealing, longer service life and capability of adapting to severe environments. The electric energy metering box with the multi-channel sealing structure comprises a box body and a box door hinged to the box body, wherein a door frame is arranged on the box body, at least two mutually independent and parallel sealing strip mounting structures are arranged on the door frame along the closing circumferential direction, a first sealing strip and a second sealing strip are respectively embedded in the sealing strip mounting structures, and when the box door is closed, the first sealing strip and the second sealing strip are compressed, and at least two continuous sealing barriers which are sequentially arranged along the medium invasion direction are formed between the box door and the door frame. In some embodiments, the first sealing strip is a sealing strip with a solid circular or oval cross section to form a primary sealing barrier, and the second sealing strip is a sealing strip with a D-shaped or P-shaped cross section to form a secondary sealing barrier. In some embodiments, the first sealing strip and the second sealing strip are different in material and/or hardness. In some embodiments, the first sealing strip is ethylene propylene diene monomer rubber and the second sealing strip is silicone rubber. In some embodiments, a third sealing structure is further arranged on the door between the first sealing strip and the second sealing strip, and the third sealing structure is a comb-tooth-shaped or fin-shaped physical barrier strip. In some embodiments, a guide ramp is provided on the sealing surface of the door frame, the guide ramp being configured to guide the displacement of the door and to translate the closing force into a vertical compression force on the first and second sealing strips during door closing. In some embodiments, at least one drainage micropore leading to the outside of the box body is formed at the bottom of the isolation cavity formed by the first sealing strip and the second sealing strip. In some embodiments, the at least two sealing strip mounting structures are a first sealing groove and a second sealing groove which are arranged on the door frame, the sealing strip mounting structures are formed by a plurality of sealing strips The first sealing strip and the second sealing strip are correspondingly embedded in the first sealing groove and the second sealing groove respectively. In some embodiments, the door is provided with a multi-point linkage locking mechanism for synchronously applying balanced pressing force at a plurality of positions along the circumferential direction of the door when the door is closed. The utility model has the beneficial effects that at least two independent sealing barriers are adopted to form a physical isolation area, even if one of the sealing barriers is degraded due to aging or damage, the other sealing barrier can still provide effective sealing, thus greatly improving the overall reliability and fault tolerance of the system. The main sealing strip and the sec