CN107658759B - A safety intelligent protection method for power distribution cabinet - Google Patents
A safety intelligent protection method for power distribution cabinet Download PDFInfo
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- CN107658759B CN107658759B CN201711104054.2A CN201711104054A CN107658759B CN 107658759 B CN107658759 B CN 107658759B CN 201711104054 A CN201711104054 A CN 201711104054A CN 107658759 B CN107658759 B CN 107658759B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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Abstract
本发明公开了一种配电柜安全智能化防护方法，包括以下步骤：S1、利用隔板将配电柜柜体自上而下分为第一腔室和第二腔室，且在第一腔室的侧壁和顶部设置通风孔；S2、采集配电柜所处环境的天气信息，以及，第二腔室的温度信息T；S3、基于上述天气信息和温度信息T为配电柜选择通风模式。本发明通过采集配电柜所处环境的天气信息以及配电柜内部的温度信息来判断配电柜外部以及内部的安全性，进而根据判断结果针对性的为配电柜选择通风模式，一方面防止配电柜内温度过高造成的安全隐患，另一方面防止外界环境变化对配电柜的使用安全造成影响。
The invention discloses a safe and intelligent protection method for a power distribution cabinet, which includes the following steps: S1. Divide the body of the power distribution cabinet into a first chamber and a second chamber from top to bottom by using a partition, and in the first Ventilation holes are provided on the side wall and the top of the chamber; S2, collect weather information of the environment where the power distribution cabinet is located, and temperature information T of the second chamber; S3, select a power distribution cabinet based on the above weather information and temperature information T ventilation mode. The present invention judges the safety of the exterior and interior of the power distribution cabinet by collecting the weather information of the environment where the power distribution cabinet is located and the temperature information inside the power distribution cabinet, and then selects the ventilation mode for the power distribution cabinet according to the judgment result. On the one hand Prevent potential safety hazards caused by excessive temperature in the power distribution cabinet, and on the other hand, prevent changes in the external environment from affecting the safety of the power distribution cabinet.
Description
技术领域technical field
本发明涉及配电柜安全防范技术领域，尤其涉及一种配电柜安全智能化防护方法。The invention relates to the technical field of safety protection for power distribution cabinets, in particular to an intelligent safety protection method for power distribution cabinets.
背景技术Background technique
随着我国经济的发展，建设节约型社会和可持续发展的目标深入，对电力营造的规范管理、安全用电以及节能用电越来越重视，近年来投入大量的资金对电网进行建设和改造，而配电柜是其中建设的重要项目。配电柜是按电气接线要求将开关设备、测量仪表、保护电器和辅助设备组装在封闭或半封闭金属柜中或屏幅上，而构成的低压配电装置；现有技术中配电柜的结构比较复杂、体积大、不便移动。当配电柜暴露在外界环境中时，天气的变化以及温度的变化会对配电柜内各电器部件的工作状态造成影响，不仅会影响配电柜的正常使用过程，而且存在安全隐患。With the development of my country's economy, the goal of building a conservation-oriented society and sustainable development has deepened, and more and more attention has been paid to the standardized management of power construction, safe power consumption, and energy-saving power consumption. In recent years, a large amount of money has been invested in the construction and transformation of power grids. , and the power distribution cabinet is an important item in the construction. The power distribution cabinet is a low-voltage power distribution device composed of switchgear, measuring instruments, protective appliances and auxiliary equipment assembled in a closed or semi-closed metal cabinet or on a screen width according to the requirements of electrical wiring; the power distribution cabinet in the prior art The structure is relatively complicated, the volume is large, and it is inconvenient to move. When the power distribution cabinet is exposed to the external environment, changes in weather and temperature will affect the working status of the electrical components in the power distribution cabinet, which will not only affect the normal use of the power distribution cabinet, but also pose a safety hazard.
发明内容Contents of the invention
基于背景技术存在的技术问题，本发明提出了一种配电柜安全智能化防护方法。Based on the technical problems existing in the background technology, the present invention proposes a safe and intelligent protection method for a power distribution cabinet.
本发明提出的配电柜安全智能化防护方法，包括以下步骤：The safety and intelligent protection method of the power distribution cabinet proposed by the present invention includes the following steps:
S1、利用隔板将配电柜柜体自上而下分为第一腔室和第二腔室，且在第一腔室的侧壁和顶部设置通风孔；S1. Divide the cabinet body of the power distribution cabinet from top to bottom into the first chamber and the second chamber by using partitions, and set ventilation holes on the side wall and top of the first chamber;
S2、采集配电柜所处环境的天气信息，以及，第二腔室的温度信息T；S2. Collect the weather information of the environment where the power distribution cabinet is located, and the temperature information T of the second chamber;
S3、基于上述天气信息和温度信息T为配电柜选择通风模式。S3. Select a ventilation mode for the power distribution cabinet based on the above weather information and temperature information T.
优选地，步骤S1中，所述隔板为弹性可伸缩结构且隔板上设有通风孔，且隔板具有第一形态、第二形态、第三形态；Preferably, in step S1, the partition is an elastically stretchable structure with ventilation holes provided on the partition, and the partition has a first shape, a second shape, and a third shape;
在第一形态下，隔板为平板状且横截面积与柜体的底面积相等，且隔板上的通风孔闭合；In the first form, the partition is flat and has a cross-sectional area equal to the bottom area of the cabinet, and the ventilation holes on the partition are closed;
在第二形态下，隔板为平板状且横截面积与柜体的底面积相等，且隔板上的通风孔打开；In the second form, the partition is flat and has a cross-sectional area equal to the bottom area of the cabinet, and the ventilation holes on the partition are opened;
在第三形态下，隔板为V形状且开口朝向柜体底部，且隔板上的通风孔打开。In the third form, the partition is V-shaped and the opening faces the bottom of the cabinet, and the ventilation holes on the partition are opened.
优选地，步骤S3具体包括：Preferably, step S3 specifically includes:
预设有第一天气、第二天气、第三天气、第一温度值T1；The first weather, the second weather, the third weather, and the first temperature value T 1 are preset;
当天气信息为第一天气、温度信息T>T1时，为配电柜选择第一通风模式；When the weather information is the first weather and temperature information T>T 1 , select the first ventilation mode for the power distribution cabinet;
当天气信息为第一天气、温度信息T≤T1时，为配电柜选择第二通风模式；When the weather information is the first weather and temperature information T≤T 1 , select the second ventilation mode for the power distribution cabinet;
当天气信息为第二天气、温度信息T>T1时，为配电柜选择第三通风模式；When the weather information is the second weather and temperature information T>T 1 , select the third ventilation mode for the power distribution cabinet;
当天气信息为第二天气、温度信息T≤T1时，为配电柜选择第四通风模式；When the weather information is the second weather and temperature information T≤T 1 , select the fourth ventilation mode for the power distribution cabinet;
当天气信息为第三天气时，为配电柜选择第五通风模式；When the weather information is the third weather, select the fifth ventilation mode for the power distribution cabinet;
其中，在第一通风模式下，第一腔室侧壁的通风孔闭合、顶部的通风孔打开、隔板保持第三形态；Wherein, in the first ventilation mode, the ventilation holes on the side wall of the first chamber are closed, the ventilation holes on the top are opened, and the partition maintains the third configuration;
在第二通风模式下，第一腔室侧壁的通风孔闭合、顶部的通风孔打开、隔板保持第二形态；In the second ventilation mode, the ventilation holes on the side wall of the first chamber are closed, the ventilation holes on the top are opened, and the partition maintains the second configuration;
在第三通风模式下，第一腔室侧壁的通风孔打开、顶部的通风孔闭合、隔板保持第三形态；In the third ventilation mode, the ventilation holes on the side wall of the first chamber are opened, the ventilation holes on the top are closed, and the partition maintains the third configuration;
在第四通风模式下，第一腔室侧壁的通风孔打开、顶部的通风孔闭合、隔板保持第二形态；In the fourth ventilation mode, the ventilation holes on the side wall of the first chamber are opened, the ventilation holes on the top are closed, and the partition maintains the second configuration;
在第五通风模式下，第一腔室侧壁和顶部的通风孔均闭合、隔板保持第一形态；In the fifth ventilation mode, the ventilation holes on the side wall and the top of the first chamber are closed, and the partition keeps the first shape;
其中，当天气信息为风时，判定其为第一天气；Wherein, when the weather information is wind, it is determined to be the first weather;
当天气信息包括阴、晴时，判定其为第二天气；When the weather information includes cloudy and sunny, it is determined to be the second weather;
当天气信息不属于第一天气和第二天气时，判定其为第三天气。When the weather information does not belong to the first weather and the second weather, it is determined to be the third weather.
优选地，步骤S2中，利用天气采集模块采集配电柜所处环境的天气信息；Preferably, in step S2, the weather information of the environment where the power distribution cabinet is located is collected by using the weather collection module;
优选地，所述天气采集模块通过第一方式和第二方式获取配电柜所处环境的信息；Preferably, the weather collection module obtains the information of the environment where the power distribution cabinet is located through the first method and the second method;
第一方式为直接采集配电柜所处环境的天气信息；The first way is to directly collect the weather information of the environment where the power distribution cabinet is located;
第二方式为通过天气预报获取配电柜所处环境的天气信息。The second way is to obtain the weather information of the environment where the power distribution cabinet is located through the weather forecast.
优选地，所述天气采集模块包括多个天气采集子模块。Preferably, the weather collection module includes a plurality of weather collection sub-modules.
优选地，步骤S2中，利用温度采集模块采集第二腔室的温度信息T；Preferably, in step S2, the temperature information T of the second chamber is collected by using the temperature collection module;
优选地，所述温度采集模块包括多个温度采集子模块，多个温度采集子模块的安装位置均不相同，任一个温度子采集模块至少包括一个温度传感器。Preferably, the temperature acquisition module includes a plurality of temperature acquisition sub-modules, the installation positions of the plurality of temperature acquisition sub-modules are different, and any temperature sub-acquisition module includes at least one temperature sensor.
本发明通过采集配电柜所处环境的天气信息以及配电柜内部的温度信息来判断配电柜外部以及内部的安全性，进而根据判断结果针对性的为配电柜选择通风模式，一方面防止配电柜内温度过高造成的安全隐患，另一方面防止外界环境变化对配电柜的使用安全造成影响。进一步地，本发明还通过调整配电柜的具体结构来全面提高通风模式的有效性，一是利用隔板将配电柜分隔为两个腔室来提高配电柜内部通风的安全性，二是改变隔板的形状来调整通风区域的大小以提高配电柜内部通风的全面性，不仅有利于保证通风柜内部通风的针对性，而且保证了通风柜内部通风的安全性。The present invention judges the safety of the exterior and interior of the power distribution cabinet by collecting the weather information of the environment where the power distribution cabinet is located and the temperature information inside the power distribution cabinet, and then selects the ventilation mode for the power distribution cabinet according to the judgment result. On the one hand Prevent potential safety hazards caused by excessive temperature in the power distribution cabinet, and on the other hand, prevent changes in the external environment from affecting the safety of the power distribution cabinet. Further, the present invention also comprehensively improves the effectiveness of the ventilation mode by adjusting the specific structure of the power distribution cabinet. It is to change the shape of the partition to adjust the size of the ventilation area to improve the comprehensiveness of the internal ventilation of the power distribution cabinet, which not only helps to ensure the pertinence of the internal ventilation of the fume hood, but also ensures the safety of the internal ventilation of the fume hood.
附图说明Description of drawings
图1为一种配电柜安全智能化防护方法的步骤示意图。Fig. 1 is a schematic diagram of the steps of a safety intelligent protection method for a power distribution cabinet.
具体实施方式Detailed ways
如图1所示，图1为本发明提出的一种配电柜安全智能化防护方法。As shown in Fig. 1, Fig. 1 is a safety and intelligent protection method for a power distribution cabinet proposed by the present invention.
参照图1，本发明提出的配电柜安全智能化防护方法，包括以下步骤：Referring to Figure 1, the intelligent protection method for the safety of the power distribution cabinet proposed by the present invention includes the following steps:
S1、利用隔板将配电柜柜体自上而下分为第一腔室和第二腔室，且在第一腔室的侧壁和顶部设置通风孔；通过将配电柜柜体分隔为两个腔室，有利于提高配电柜内部通风的安全性和针对性；在实际使用过程中，配电柜内部所有的电器部件均安装于第二腔室，第一腔室则用于通风，如此保证配电柜内部通风的安全性和有效性。S1. Use the partition to divide the cabinet body of the power distribution cabinet into the first chamber and the second chamber from top to bottom, and set ventilation holes on the side wall and top of the first chamber; by separating the cabinet body of the power distribution cabinet There are two chambers, which is conducive to improving the safety and pertinence of the ventilation inside the power distribution cabinet; in actual use, all the electrical components inside the power distribution cabinet are installed in the second chamber, and the first chamber is used for Ventilation, so as to ensure the safety and effectiveness of the internal ventilation of the distribution cabinet.
本实施方式中，所述隔板为弹性可伸缩结构且隔板上设有通风孔，且隔板具有第一形态、第二形态、第三形态；In this embodiment, the partition is an elastic and stretchable structure, and ventilation holes are provided on the partition, and the partition has a first form, a second form, and a third form;
在第一形态下，隔板为平板状且横截面积与柜体的底面积相等，且隔板上的通风孔闭合；在此状态下，第二腔室闭合，防止外界环境中的雨水等不安全因素进入第二腔室造成安全隐患，保证配电柜的使用安全；In the first form, the partition is flat and the cross-sectional area is equal to the bottom area of the cabinet, and the ventilation holes on the partition are closed; in this state, the second chamber is closed to prevent rainwater in the external environment, etc. Unsafe factors enter the second chamber and cause potential safety hazards, ensuring the safe use of the power distribution cabinet;
在第二形态下，隔板为平板状且横截面积与柜体的底面积相等，且隔板上的通风孔打开；在此状态下，第一腔室和第二腔室通过隔板上的通风孔进行空气交换，通过气体的流通来调节第二腔室内的温度和湿度情况，使第二腔室保持适宜的工作环境；In the second form, the partition is flat and the cross-sectional area is equal to the bottom area of the cabinet, and the ventilation holes on the partition are opened; in this state, the first chamber and the second chamber pass through the partition Air exchange is carried out through the ventilation holes, and the temperature and humidity in the second chamber are adjusted through the circulation of gas, so that the second chamber maintains a suitable working environment;
在第三形态下，隔板为V形状且开口朝向柜体底部，且隔板上的通风孔打开，在此状态下，第二腔室的空间增大，通过增大空间来增加第二腔室内气体的流动速度和流动区域，以在短时间内将第二腔室内的高温调整至适宜范围内，保证第二腔室内各电器设备的安全使用环境。In the third form, the partition is V-shaped and the opening faces the bottom of the cabinet, and the ventilation holes on the partition are opened. In this state, the space of the second chamber increases, and the second chamber is increased by increasing the space The flow speed and flow area of the indoor gas can adjust the high temperature in the second chamber to an appropriate range in a short time to ensure the safe use environment of the electrical equipment in the second chamber.
S2、采集配电柜所处环境的天气信息，以及，第二腔室的温度信息T；S2. Collect the weather information of the environment where the power distribution cabinet is located, and the temperature information T of the second chamber;
本实施方式中，利用天气采集模块采集配电柜所处环境的天气信息；In this embodiment, the weather information of the environment where the power distribution cabinet is located is collected by using the weather collection module;
优选地，所述天气采集模块通过第一方式和第二方式获取配电柜所处环境的信息；第一方式为直接采集配电柜所处环境的天气信息；第二方式为通过天气预报获取配电柜所处环境的天气信息；通过上述两种方式可以安全且准确的对配电柜所处环境的天气信息进行采集，为下一步骤提供精确的参考依据。所述天气采集模块包括多个天气采集子模块，进一步提高配电柜所处环境的天气信息采集的全面性和有效性。Preferably, the weather collection module obtains the information of the environment where the power distribution cabinet is located through the first method and the second method; the first method is to directly collect the weather information of the environment where the power distribution cabinet is located; the second method is to obtain the information through the weather forecast The weather information of the environment where the power distribution cabinet is located; through the above two methods, the weather information of the environment where the power distribution cabinet is located can be safely and accurately collected, providing an accurate reference for the next step. The weather collection module includes a plurality of weather collection sub-modules, which further improves the comprehensiveness and effectiveness of weather information collection in the environment where the power distribution cabinet is located.
利用温度采集模块采集第二腔室的温度信息T；Using the temperature acquisition module to collect temperature information T of the second chamber;
优选地，所述温度采集模块包括多个温度采集子模块，多个温度采集子模块的安装位置均不相同，以从不同位置和不同角度对第二腔室的温度信息进行采集，在提高温度信息采集全面性的基础上保证了温度信息采集的有效性；且任一个温度子采集模块至少包括一个温度传感器，进一步提高了对第二腔室的温度信息采集的全面性和精确性。Preferably, the temperature acquisition module includes a plurality of temperature acquisition sub-modules, and the installation positions of the plurality of temperature acquisition sub-modules are different, so as to collect the temperature information of the second chamber from different positions and different angles. The effectiveness of temperature information collection is guaranteed on the basis of comprehensive information collection; and any temperature sub-acquisition module includes at least one temperature sensor, which further improves the comprehensiveness and accuracy of temperature information collection for the second chamber.
S3、基于上述天气信息和温度信息T为配电柜选择通风模式。S3. Select a ventilation mode for the power distribution cabinet based on the above weather information and temperature information T.
本实施方式中，步骤S3具体包括：In this embodiment, step S3 specifically includes:
预设有第一天气、第二天气、第三天气、第一温度值T1；其中，当天气信息为风时，判定其为第一天气；当天气信息包括阴、晴时，判定其为第二天气；当天气信息不属于第一天气和第二天气时，判定其为第三天气；The first weather, the second weather, the third weather, and the first temperature value T 1 are preset; among them, when the weather information is wind, it is determined to be the first weather; when the weather information includes cloudy and sunny, it is determined to be The second weather; when the weather information does not belong to the first weather and the second weather, it is determined to be the third weather;
当天气信息为第一天气、温度信息T>T1时，表明当前天气为有风且第二腔室内温度较高，此时为配电柜选择第一通风模式；在第一通风模式下，第一腔室侧壁的通风孔闭合、顶部的通风孔打开、隔板保持第三形态；一方面通过改变隔板的形状来加大第二腔室的空间以增加第二腔室内气体的流动速度和效率，另一方面通过开启配电柜顶部通风孔来实现配电柜内部气体的上下流动，以期在较短时间内将第二腔室环境调整至适宜状态。When the weather information is the first weather and the temperature information T>T 1 , it indicates that the current weather is windy and the temperature in the second chamber is relatively high. At this time, the first ventilation mode is selected for the power distribution cabinet; in the first ventilation mode, The ventilation hole on the side wall of the first chamber is closed, the ventilation hole on the top is opened, and the partition maintains the third form; on the one hand, the space of the second chamber is increased by changing the shape of the partition to increase the flow of gas in the second chamber Speed and efficiency. On the other hand, by opening the ventilation holes on the top of the power distribution cabinet, the gas inside the power distribution cabinet can flow up and down, so as to adjust the environment of the second chamber to a suitable state in a short period of time.
当天气信息为第一天气、温度信息T≤T1时，表明当前天气为晴天且第二腔室内温度适宜，则不需加大第二腔室内的空气循环力度，此时为配电柜选择第二通风模式；在第二通风模式下，第一腔室侧壁的通风孔闭合、顶部的通风孔打开、隔板保持第二形态；When the weather information is the first weather and the temperature information T≤T 1 , it indicates that the current weather is sunny and the temperature in the second chamber is suitable, so there is no need to increase the air circulation in the second chamber. The second ventilation mode; in the second ventilation mode, the ventilation holes on the side wall of the first chamber are closed, the ventilation holes on the top are opened, and the partition maintains the second shape;
当天气信息为第二天气、温度信息T>T1时，表明当前天气中没有雨水，此时可以利用配电柜第一腔室侧壁上的通风孔来实现配电柜内部空气的流通，则为配电柜选择第三通风模式；在第三通风模式下，第一腔室侧壁的通风孔打开、顶部的通风孔闭合、隔板保持第三形态；通过改变隔板的形状加大第二腔室的空间，以降低第二腔室内的高温；When the weather information is the second weather and temperature information T>T 1 , it indicates that there is no rain in the current weather. At this time, the ventilation holes on the side wall of the first chamber of the power distribution cabinet can be used to realize the circulation of air inside the power distribution cabinet. Then select the third ventilation mode for the power distribution cabinet; in the third ventilation mode, the ventilation holes on the side wall of the first chamber are opened, the ventilation holes on the top are closed, and the partition maintains the third form; by changing the shape of the partition, the the space of the second chamber to reduce the high temperature in the second chamber;
当天气信息为第二天气、温度信息T≤T1时，表明当前天气中没有雨水，且第二腔室内温度适宜，此时为配电柜选择第四通风模式；在第四通风模式下，第一腔室侧壁的通风孔打开、顶部的通风孔闭合、隔板保持第二形态；利用第一腔室侧壁的通风孔以及隔板上的通风孔来实现配电柜内部的气体交换；When the weather information is the second weather and the temperature information T≤T 1 , it indicates that there is no rain in the current weather, and the temperature in the second chamber is suitable. At this time, the fourth ventilation mode is selected for the power distribution cabinet; in the fourth ventilation mode, The ventilation holes on the side wall of the first chamber are opened, the ventilation holes on the top are closed, and the partition maintains the second shape; the gas exchange inside the power distribution cabinet is realized by using the ventilation holes on the side wall of the first chamber and the ventilation holes on the partition ;
当天气信息为第三天气时，表明当前天气较为恶劣，为避免恶劣环境中的不利因素影响配电柜内部的实际环境，为配电柜选择第五通风模式；在第五通风模式下，第一腔室侧壁和顶部的通风孔均闭合、隔板保持第一形态；一方面防止外界环境中的不利因素通过第一腔室的通风孔进入配电柜内部造成影响，另一方面闭合第二腔室避免第二腔室内的工作环境被影响，全面保证配电柜的安全运行。When the weather information is the third weather, it indicates that the current weather is relatively bad. In order to avoid the adverse factors in the harsh environment from affecting the actual environment inside the power distribution cabinet, the fifth ventilation mode is selected for the power distribution cabinet; in the fifth ventilation mode, the first The ventilation holes on the side wall and the top of the first chamber are closed, and the partition maintains the first form; on the one hand, it prevents unfavorable factors in the external environment from entering the power distribution cabinet through the ventilation holes of the first chamber and on the other hand, closes the first chamber. The second chamber prevents the working environment in the second chamber from being affected, and fully guarantees the safe operation of the power distribution cabinet.
本实施方式通过采集配电柜所处环境的天气信息以及配电柜内部的温度信息来判断配电柜外部以及内部的安全性，进而根据判断结果针对性的为配电柜选择通风模式，一方面防止配电柜内温度过高造成的安全隐患，另一方面防止外界环境变化对配电柜的使用安全造成影响。进一步地，本实施方式还通过调整配电柜的具体结构来全面提高通风模式的有效性，一是利用隔板将配电柜分隔为两个腔室来提高配电柜内部通风的安全性，二是改变隔板的形状来调整通风区域的大小以提高配电柜内部通风的全面性，不仅有利于保证通风柜内部通风的针对性，而且保证了通风柜内部通风的安全性。This embodiment judges the safety of the exterior and interior of the power distribution cabinet by collecting the weather information of the environment where the power distribution cabinet is located and the temperature information inside the power distribution cabinet, and then selects the ventilation mode for the power distribution cabinet according to the judgment results. On the one hand, it prevents potential safety hazards caused by excessive temperature in the distribution cabinet, and on the other hand, it prevents changes in the external environment from affecting the safety of the distribution cabinet. Furthermore, this embodiment also comprehensively improves the effectiveness of the ventilation mode by adjusting the specific structure of the power distribution cabinet. The second is to change the shape of the partition to adjust the size of the ventilation area to improve the comprehensiveness of the internal ventilation of the power distribution cabinet, which not only helps to ensure the pertinence of the internal ventilation of the fume hood, but also ensures the safety of the internal ventilation of the fume hood.
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.
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