CN-224204624-U - Distribution box

CN224204624UCN 224204624 UCN224204624 UCN 224204624UCN-224204624-U

Abstract

The utility model discloses a distribution box, which comprises a distribution box shell, wherein electronic components are assembled in the distribution box shell, the inner lower part of the distribution box shell penetrates through a temperature adjusting pipeline, a phase change pipe is sleeved outside the temperature adjusting pipeline positioned in the distribution box shell, a cavity is formed between the inner wall of the phase change pipe and the outer wall of the temperature adjusting pipeline, phase change materials are filled in the cavity, and the temperature adjusting pipeline is an exhaust pipe of a supercharging building exhaust system. The utility model has the beneficial effects that exhaust waste heat of the supercharged building is used as a heat source to heat the distribution box, compared with the electric heating mode adopted in the prior art, the utility model does not need to arrange a temperature sensor to perform feedback control, has simple structure, reduces the heat load and the energy consumption of the distribution box, and greatly improves the heat exchange efficiency by designing the heat exchange fins.

Inventors

LIU ZHIMAO
WANG SIQING
LUO WEN
WEN KANG
XIONG CHAO
YE ZHIWU
WU ZIMIN
ZHOU JIYUN
LIU WEIJUN
WU HAO
JIANG HUI
TIAN LI
YANG YI

Assignees

中建三局集团有限公司
中建三局云居科技有限公司

Dates

Publication Date: 20260505
Application Date: 20241106

Claims (9)

1. The distribution box comprises a distribution box shell, wherein electronic components are assembled in the distribution box shell, and the distribution box is characterized in that the inner lower portion of the distribution box shell penetrates through a temperature adjusting pipeline, a phase-change pipe is sleeved outside the temperature adjusting pipeline in the distribution box shell, a cavity is formed between the inner wall of the phase-change pipe and the outer wall of the temperature adjusting pipeline, phase-change materials are filled in the cavity, and heat exchange in the distribution box is achieved through the phase-change materials.
2. The electrical box of claim 1, wherein the temperature conditioning duct is an exhaust duct of a pressurized building exhaust system.
3. The electrical box according to claim 1 or 2, wherein the tempering conduit comprises a first tube section located inside the electrical box housing, a second tube section remote from the electrical box housing, and a transition tube section connecting the first tube section and the second tube section, and wherein heat exchange fins are provided on an outer wall of the first tube section, the heat exchange fins being located within the phase change tube.
4. A power distribution box as claimed in claim 3, wherein a first pipe section insulation layer is provided on the outer wall of the phase change pipe of the first pipe section.
5. The power distribution box according to claim 4, wherein the second pipe section is provided with a second pipe section heat insulation layer on the outer side, and the transition pipe section is wrapped with a transition pipe section heat insulation layer on the outer wall.
6. The distribution box according to claim 1, wherein an outer wall of the distribution box shell is provided with a shell outer heat-insulating layer, an inner wall of the distribution box is provided with a reflecting layer, and the reflecting layer is an aluminum film or a tin film.
7. The power distribution box according to claim 1, wherein a cable sleeve for communicating the outside with the inside of the power distribution box shell is arranged at the upper part of the power distribution box shell, cables of electronic components penetrate out through the cable sleeve, and an outer wall of the cable sleeve is wrapped with a sleeve outer heat insulation layer.
8. The electrical box of claim 7, wherein the gaps between the ends of the cable sleeve and the cable are sealed with a fire-resistant sealant, and the gaps between the outer periphery of the cable sleeve and the electrical box housing are sealed with a sealant.
9. A power distribution box as claimed in claim 3, wherein the joints of the pipe sections are provided with one-way valves.

Description

Distribution box Technical Field The utility model relates to power equipment, in particular to a distribution box. Background The distribution box is a commonly used power equipment, is used for installing terminal metering equipment and controlling a box body of a terminal power supply, and requires that electronic devices such as switch equipment, measuring instruments, protection electrical appliances, auxiliary equipment and the like are assembled in a closed or semi-closed metal cabinet or on a screen. However, in some cold regions, since the outside air temperature is very low and even below-40 ℃, components inside the distribution box may be stopped or even damaged due to low temperatures, which is a problem that must be considered when designing the distribution box in the cold region. At present, part of products are used for independently heating the distribution box under the low-temperature working condition, for example, china patent CN211123810U adopts an electric heating ring to heat the distribution box, and China patent CN202222953163.4 also adopts an electric heating mode. However, the distribution box with the simple heating mode has the defects that the heat load of the distribution box is overlarge, the energy consumption is high, the reduction of the heat load of the distribution box is not considered, the internal heating of the distribution box is difficult to be uniform, part of electronic components can still be exposed to low temperature, the distribution box is easy to freeze out after the accident is powered off, and an additional heating device is needed for preheating when the distribution box is restarted. Accordingly, there is a need for improvements over the prior art. Disclosure of Invention The utility model aims to overcome the defects of the prior art, provides a distribution box, and aims to solve the problem of high thermal load of the distribution box in the prior art. The technical scheme includes that the distribution box comprises a distribution box shell, electronic components are assembled in the distribution box shell, the inner lower portion of the distribution box shell penetrates through a temperature adjusting pipeline, a phase change pipe is sleeved outside the temperature adjusting pipeline in the distribution box shell, a cavity is formed between the inner wall of the phase change pipe and the outer wall of the temperature adjusting pipeline, phase change materials are filled in the cavity, and heat exchange in the distribution box is achieved through the phase change materials. According to the scheme, the temperature adjusting pipeline is an exhaust pipe of the supercharging building exhaust system. According to the scheme, the temperature adjusting pipeline comprises a first pipe section positioned in the distribution box shell, a second pipe section far away from the distribution box shell and a transition pipe section connecting the first pipe section and the second pipe section, wherein heat exchange fins are arranged on the outer wall of the first pipe section and positioned in the phase change pipe. According to the scheme, the first pipe section heat insulation layer is arranged on the outer wall of the phase change pipe of the first pipe section. According to the scheme, the phase change material is water, hydrated salt or fatty acid, or a mixture of one or more of tridecane, triethylene glycol, diethylene glycol and dodecane. According to the scheme, the second pipe section heat-insulating layer is arranged outside the second pipe section, and the transition pipe section heat-insulating layer is wrapped on the outer wall of the transition pipe section. According to the scheme, the outer wall of the distribution box shell is provided with the shell outer heat insulation layer, the inner wall of the distribution box is provided with the reflecting layer, and the reflecting layer is an aluminum film or a tin film. According to the scheme, the cable sleeve which is communicated with the outside and the inside of the distribution box shell is arranged at the upper part of the distribution box shell, a cable of an electronic component penetrates out of the cable sleeve, and the outer wall of the cable sleeve is wrapped with the sleeve outer heat-insulating layer. According to the scheme, gaps between two ends of the cable sleeve and the cable are sealed by adopting fireproof sealant, and gaps between the periphery of the cable sleeve and the distribution box shell are sealed by adopting sealant. According to the scheme, the connecting parts of the pipe sections are all provided with one-way valves. The beneficial effects of the utility model are as follows: 1. The utility model does not need active heating, reduces energy consumption and has small heat load. Compared with the prior art adopting an electric heating mode, the temperature-adjusting pipeline is used as a heat source for heating the distribution box, a temperature sensor is not required