CN106770510A - A kind of power distribution cabinet with gas detection function - Google Patents
A kind of power distribution cabinet with gas detection function Download PDFInfo
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Abstract
Description
技术领域technical field
本申请涉及配电柜领域，尤其涉及一种带有气体检测功能的配电柜。The present application relates to the field of power distribution cabinets, in particular to a power distribution cabinet with a gas detection function.
背景技术Background technique
目前，配电柜应用范围非常广泛，是各类型企事业单位及大型办公场所供电的基础设施，使用量非常巨大。At present, the application range of power distribution cabinets is very wide, and it is the infrastructure for power supply of various types of enterprises, institutions and large office places, and the usage is very huge.
由于使用环境的复杂化，当配电柜的工作环境中存在危险气体时，尤其是窒息性的CO2气体时，其对操作使用人员的安全存在较大的隐患。Due to the complexity of the use environment, when there are dangerous gases in the working environment of the power distribution cabinet, especially the suffocating CO 2 gas, there are great hidden dangers to the safety of operators and users.
发明内容Contents of the invention
本发明旨在提供一种带有气体检测功能的配电柜，以解决上述提出问题。The present invention aims to provide a power distribution cabinet with a gas detection function to solve the above-mentioned problems.
本发明的实施例中提供了一种带有气体检测功能的配电柜，包括电磁锁、配电柜门、温度检测器、配电柜体、涡流风机和CO2气体传感器，所述配电柜体上安装有配电柜门，配电柜门关闭时与配电柜体接触位置安装有电磁锁和微碰开关，电磁锁安装在配电柜门内侧并与微处理器连接，微碰开关固定在配电柜体上与微处理器连接，微处理器安装在配电柜体顶部，配电柜体顶部安装有密码输入键盘，配电柜体底部安装有涡流风机，配电柜体内壁安装有温度检测器和CO2气体传感器，配电柜体顶部安装有散热条孔，配电柜体顶部设置有仪盘表和声光报警器。An embodiment of the present invention provides a power distribution cabinet with a gas detection function, including an electromagnetic lock, a power distribution cabinet door, a temperature detector, a power distribution cabinet, an eddy current fan, and a CO2 gas sensor. The cabinet body is equipped with a power distribution cabinet door. When the power distribution cabinet door is closed, an electromagnetic lock and a micro-touch switch are installed at the contact position with the power distribution cabinet body. The electromagnetic lock is installed on the inside of the power distribution cabinet door and connected to the microprocessor. The switch is fixed on the power distribution cabinet and connected to the microprocessor. The microprocessor is installed on the top of the power distribution cabinet. A password input keyboard is installed on the top of the power distribution cabinet. A vortex fan is installed on the bottom of the power distribution cabinet. Inside the power distribution cabinet Temperature detectors and CO2 gas sensors are installed on the wall, cooling bar holes are installed on the top of the power distribution cabinet, and instrument panels and sound and light alarms are installed on the top of the power distribution cabinet.
本发明的实施例提供的技术方案可以包括以下有益效果：The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:
本发明在配电柜体内部设有CO2气体传感器，其对CO2气体的检测灵敏度高，当环境中含有过量的CO2，该CO2气体传感器能够及时、准确的检测，并且耐水性好，使用寿命长，从而解决了上述提出问题。The present invention is equipped with a CO 2 gas sensor inside the power distribution cabinet, which has high detection sensitivity to CO 2 gas. When the environment contains excessive CO 2 , the CO 2 gas sensor can detect in time and accurately, and has good water resistance , long service life, thereby solving the above-mentioned problems.
本申请附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本申请。Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
附图说明Description of drawings
利用附图对本发明作进一步说明，但附图中的实施例不构成对本发明的任何限制，对于本领域的普通技术人员，在不付出创造性劳动的前提下，还可以根据以下附图获得其它的附图。The present invention is further described by using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, without paying creative work, other embodiments can also be obtained according to the following accompanying drawings Attached picture.
图1是本发明配电柜的结构示意图。Fig. 1 is a schematic structural diagram of a power distribution cabinet of the present invention.
图2为本发明所述CO2气体传感器的结构示意图。Fig. 2 is a schematic structural diagram of the CO 2 gas sensor of the present invention.
具体实施方式detailed description
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.
现代电子信息技术的三大支柱是传感器技术、通讯技术和计算机技术，其中，传感器是信息获取与交换的核心。气体传感器是传感器领域的一个重要分支，其可以感受外界气氛信息并按一定的规律转换为可测信号；现代社会人们接触不同气体的机会越来越多，因此有必要对其气体成分进行分析、检测及报警等，因此，气体传感器在工农业生产、家庭安全、环境监测、能源、医疗等领域具有非常重要的作用。The three pillars of modern electronic information technology are sensor technology, communication technology and computer technology, among which sensor is the core of information acquisition and exchange. Gas sensor is an important branch of the sensor field, which can sense the external atmosphere information and convert it into a measurable signal according to certain rules; people in modern society have more and more opportunities to come into contact with different gases, so it is necessary to analyze its gas composition, Detection and alarm, etc. Therefore, gas sensors play a very important role in industrial and agricultural production, home security, environmental monitoring, energy, medical care and other fields.
二氧化碳是一种常见的无机化合物，常温下无色无味，可溶于水，密度比空气大。Carbon dioxide is a common inorganic compound, colorless and odorless at room temperature, soluble in water, and denser than air.
在自然界中，二氧化碳含量丰富，为大气组成的一部分，二氧化碳可以通过多种途径产生，比如，有机物在分解、发酵、腐烂等过程中，会伴随产生二氧化碳；在石油、石蜡、煤炭、天然气等燃料的燃烧过程中，会产生大量二氧化碳；所有动物在呼吸过程中，都要吸氧产生二氧化碳；所有绿色植物都吸收二氧化碳释放氧气；另外，工业的生产，城市运转，交通等都离不开排放二氧化碳。由于二氧化碳是一种窒息性气体，其浓度超过一定范围，会引起人们的中毒，此外，在农业中，二氧化碳浓度对于作物的生长起到重要的作用，二氧化碳气体同时是温室气体的主要成分。因此，对于二氧化碳的监测与报警显得异常重要。In nature, carbon dioxide is rich in content and is a part of the atmosphere. Carbon dioxide can be produced in many ways. For example, organic matter will be accompanied by carbon dioxide during the process of decomposition, fermentation, decay, etc.; in petroleum, paraffin, coal, natural gas and other fuels A large amount of carbon dioxide will be produced during the combustion process; all animals must inhale oxygen to produce carbon dioxide during respiration; all green plants absorb carbon dioxide and release oxygen; in addition, industrial production, urban operation, transportation, etc. are inseparable from the emission of carbon dioxide . Because carbon dioxide is a kind of suffocating gas, its concentration exceeds a certain range, which will cause people to be poisoned. In addition, in agriculture, the concentration of carbon dioxide plays an important role in the growth of crops, and carbon dioxide gas is also the main component of greenhouse gases. Therefore, the monitoring and alarming of carbon dioxide is extremely important.
NASICON(Na+Superionic Conductor)材料的化学式为Na3Zr2Si2PO12，是NaZr2P3O12-Na4Zr2Si3O12固溶系统中的一种，NASICON化合物的结构是由ZrO6八面体与PO4或SiO4四面体共同形成的骨架结构，八面体与四面体构成骨架后，形成三维的骨架间隙，这些间隙构成通道，Na+离子位于骨架间隙之间，因而能沿这些间隙所构成的三维通道各向同性的传导，具有较高的离子传导效率，属于高温阳离子固体电解质，一般被称为钠离子快速导体；目前，NASICON材料在染料电池、化学离子敏感电极、电化学传感器等领域具有广泛的应用，尤其在传感器领域，以其为固体电解质制备的SO2、CO2、NOX等固体电化学式传感器是一种具有很好应用前景的器件形式。The chemical formula of NASICON (Na + Superionic Conductor) material is Na 3 Zr 2 Si 2 PO 12 , which is a kind of NaZr 2 P 3 O 12 -Na 4 Zr 2 Si 3 O 12 solid solution system. The structure of NASICON compound is composed of ZrO 6 octahedron and PO 4 or SiO 4 tetrahedron together form a framework structure. After the octahedron and tetrahedron form the framework, three-dimensional framework gaps are formed. These gaps form channels. Na + ions are located between the framework gaps, so they can be The isotropic conduction of the three-dimensional channels formed by these gaps has high ion conduction efficiency. It belongs to high-temperature cationic solid electrolytes and is generally called a fast conductor of sodium ions. At present, NASICON materials are used in dye batteries, chemical ion-sensitive electrodes, electric Chemical sensors and other fields have a wide range of applications, especially in the field of sensors. Solid electrochemical sensors such as SO 2 , CO 2 , and NO X , which are prepared as solid electrolytes, are a device form with good application prospects.
本申请的实施例涉及一种带有气体检测功能的配电柜，如图1所示，一种带有气体检测功能的配电柜，包括电磁锁1、配电柜门2、温度检测器3、配电柜体4、涡流风机5和CO2气体传感器6，所述配电柜体4上安装有配电柜门2，配电柜门2关闭时与配电柜体4接触位置安装有电磁锁1和微碰开关7，电磁锁1安装在配电柜门2内侧并与微处理器连接，微碰开关7固定在配电柜体4上与微处理器连接，微处理器安装在配电柜体4顶部，配电柜体4顶部安装有密码输入键盘8，配电柜体4底部安装有涡流风机5，配电柜体4内壁安装有温度检测器3和CO2气体传感器6，配电柜体4顶部安装有散热条孔，配电柜体4顶部设置有仪盘表9和声光报警器11，所述密码输入键盘8与微处理器连接，所述温度检测器3、CO2气体传感器6及涡流风机5均与微处理器连接；所述仪盘表9和声光报警器11均与微处理器连接。The embodiment of the present application relates to a power distribution cabinet with a gas detection function, as shown in Figure 1, a power distribution cabinet with a gas detection function, including an electromagnetic lock 1, a power distribution cabinet door 2, and a temperature detector 3. Power distribution cabinet body 4, eddy current fan 5 and CO2 gas sensor 6. The power distribution cabinet body 4 is equipped with a power distribution cabinet door 2, and the power distribution cabinet door 2 is installed at a position in contact with the power distribution cabinet body 4 when it is closed. There are electromagnetic lock 1 and micro touch switch 7, electromagnetic lock 1 is installed on the inner side of power distribution cabinet door 2 and connected with microprocessor, micro touch switch 7 is fixed on power distribution cabinet body 4 and connected with microprocessor, and microprocessor is installed On the top of the power distribution cabinet 4, a password input keyboard 8 is installed on the top of the power distribution cabinet 4, an eddy current fan 5 is installed on the bottom of the power distribution cabinet 4, and a temperature detector 3 and a CO2 gas sensor are installed on the inner wall of the power distribution cabinet 4 6. The top of the power distribution cabinet body 4 is equipped with cooling bar holes, the top of the power distribution cabinet body 4 is provided with an instrument panel 9 and an audible and visual alarm 11, the password input keyboard 8 is connected to the microprocessor, and the temperature detector 3. The CO gas sensor 6 and the vortex blower 5 are all connected to the microprocessor; the instrument panel table 9 and the sound and light alarm 11 are all connected to the microprocessor.
本发明在配电柜体内部设有CO2气体传感器，其对CO2气体的检测灵敏度高，当环境中含有过量的CO2，该CO2气体传感器能够及时、准确的检测，并且耐水性好，使用寿命长。The present invention is equipped with a CO 2 gas sensor inside the power distribution cabinet, which has high detection sensitivity to CO 2 gas. When the environment contains excessive CO 2 , the CO 2 gas sensor can detect in time and accurately, and has good water resistance ,long lasting.
优选地，如图2，所述CO2气体传感器为管式加热型固体电解质式CO2气体传感器；具体的，该CO2气体传感器以Al2O3陶瓷管10为衬底，表面设有NASICON固体电解质层60，在Al2O3陶瓷管10的一端，NASICON固体电解质层60之上设有Au膜30、Pt电极40，在Al2O3陶瓷管10的另一端，NASICON固体电解质层60之上设有Au膜30、Pt电极40和敏感电极50，Al2O3陶瓷管10中间有50Ω的加热线圈20穿过作为加热器。Preferably, as shown in Figure 2, the CO 2 gas sensor is a tubular heating type solid electrolyte CO 2 gas sensor; specifically, the CO 2 gas sensor is based on an Al 2 O 3 ceramic tube 10, and the surface is provided with NASICON Solid electrolyte layer 60, at one end of Al 2 O 3 ceramic tube 10, Au film 30 and Pt electrode 40 are arranged on NASICON solid electrolyte layer 60, at the other end of Al 2 O 3 ceramic tube 10, NASICON solid electrolyte layer 60 An Au film 30, a Pt electrode 40 and a sensitive electrode 50 are arranged on it, and a 50Ω heating coil 20 passes through the middle of the Al 2 O 3 ceramic tube 10 as a heater.
本申请中，所述CO2气体传感器采用固体电解质形式，由于固体电解质中离子导电性在高温下较佳，因此，在Al2O3陶瓷管的中间设有加热线圈，此外，在Al2O3陶瓷管表面，依次设有Au膜、Pt电极及敏感电极，利用在CO2环境中Pt电极与敏感电极的电势差测定CO2的含量，Au膜具有较高的导电性，能够提高CO2的灵敏度，进而，使得本申请的配电柜对CO2的灵敏性较高。In the present application, the CO 2 gas sensor is in the form of a solid electrolyte. Since the ionic conductivity in the solid electrolyte is better at high temperatures, a heating coil is provided in the middle of the Al 2 O 3 ceramic tube. In addition, the Al 2 O 3 The surface of the ceramic tube is provided with Au film, Pt electrode and sensitive electrode in sequence. The CO 2 content is measured by using the potential difference between the Pt electrode and the sensitive electrode in the CO 2 environment. The Au film has high conductivity and can increase the CO 2 Sensitivity, in turn, makes the distribution cabinet of the present application more sensitive to CO2 .
优选地，所述NASICON固体电解质采用高温固相法制备，高温烧结温度为1050℃，NASICON固体电解质的平均颗粒粒径为30nm。Preferably, the NASICON solid electrolyte is prepared by a high-temperature solid-phase method, the high-temperature sintering temperature is 1050° C., and the average particle size of the NASICON solid electrolyte is 30 nm.
本申请中，采用高温固相法制备的NASICON材料做传感器的固体电解质，所制备的该NASICON材料粉末疏松，易于压制成型，制作过程简单实用，有利于在配电柜体上的安装。In this application, the NASICON material prepared by the high-temperature solid-state method is used as the solid electrolyte of the sensor. The prepared NASICON material powder is loose, easy to be pressed and formed, and the manufacturing process is simple and practical, which is conducive to installation on the power distribution cabinet.
优选地，所述敏感电极50为复合碳酸盐，具体为摩尔比4:3:1的Li2CO3-BaCO3-NaHCO3复合碳酸盐，且，所述复合碳酸盐中添加有Ni纳米粉末、玻璃粉，含量分别为7.5％、9％；所述Ni纳米粉末的粒径为10nm。Preferably, the sensitive electrode 50 is a composite carbonate, specifically Li 2 CO 3 -BaCO 3 -NaHCO 3 composite carbonate with a molar ratio of 4:3:1, and the composite carbonate is added with The contents of Ni nano powder and glass powder are 7.5% and 9% respectively; the particle diameter of the Ni nano powder is 10nm.
本申请中，敏感电极为复合碳酸盐，其中，Li2CO3表现良好的吸湿性，提高了传感器的耐水性，NaHCO3在高温烧结过程中一部分会分解释放出气体，该气体冲破敏感电极材料，产生造孔效果，有利于敏感电极表面积的提高，增加了器件的灵敏度。In this application, the sensitive electrode is a composite carbonate, among which, Li 2 CO 3 exhibits good hygroscopicity, which improves the water resistance of the sensor. During the high-temperature sintering process, part of NaHCO 3 will decompose and release gas, which breaks through the sensitive electrode The material produces a pore-forming effect, which is beneficial to the improvement of the surface area of the sensitive electrode and increases the sensitivity of the device.
进一步的优选地，所述CO2气体传感的制备步骤如下：Further preferably, the preparation steps of the CO gas sensor are as follows:
步骤一，制备NASICON固体电解质Step 1, prepare NASICON solid electrolyte
选取Na3PO4·12H2O，ZrSiO4，SiO2按照化学计量比混合，充分研磨10h，得到混合物，然后将研磨好的混合物置于陶瓷方船中，放入高温电阻炉内，按照5℃/min的速率升温到800℃，保温2h，然后快速(14℃/min)升温到1050℃，保温20h，再匀速降温(8℃/min)到500℃，最后自然降温到室温；将以上经过高温烧结的混合物从炉中取出，研磨成超细粉体，即得NASICON固体电解质。Select Na 3 PO 4 ·12H 2 O, ZrSiO 4 , and SiO 2 according to the stoichiometric ratio and mix them thoroughly for 10 hours to obtain the mixture. Then place the ground mixture in a ceramic square boat and put it into a high-temperature resistance furnace. Raise the temperature at a rate of ℃/min to 800℃, keep it for 2 hours, then quickly (14℃/min) raise the temperature to 1050℃, keep it for 20 hours, then cool down at a uniform speed (8℃/min) to 500℃, and finally cool down to room temperature naturally; The mixture sintered at high temperature is taken out from the furnace and ground into ultrafine powder to obtain NASICON solid electrolyte.
步骤二，制备CO2气体传感器Step 2, preparing the CO 2 gas sensor
a)选取Al2O3陶瓷管10，清洗后晾干，陶瓷管规格为管长10mm，管壁厚0.5mm，外径为1.5mm；a) Select the Al 2 O 3 ceramic tube 10 and dry it after cleaning. The specification of the ceramic tube is 10 mm in length, 0.5 mm in wall thickness, and 1.5 mm in outer diameter;
b)将步骤一中得到的NASICON固体电解质加入去离子水，研磨成浆糊状，然后使用旋涂法均匀的涂覆在Al2O3陶瓷管10表面，b) Add the NASICON solid electrolyte obtained in step 1 to deionized water, grind it into a paste, and then use the spin coating method to evenly coat the surface of the Al2O3 ceramic tube 10,
c)将Al2O3陶瓷管10放入电阻炉中，在600℃烧结1.5h；c) Put the Al 2 O 3 ceramic tube 10 into a resistance furnace, and sinter at 600° C. for 1.5 h;
d)重复步骤b、c两次，然后将Al2O3陶瓷管在900℃下高温烧结8h，形成厚度为0.5mm的NASICON固体电解质层60；d) Repeat steps b and c twice, and then sinter the Al 2 O 3 ceramic tube at 900° C. for 8 hours to form a NASICON solid electrolyte layer 60 with a thickness of 0.5 mm;
e)然后在Al2O3陶瓷管10的两端制备一层Au膜30，厚度为500μm，在Au膜30表面引出Pt电极40，烧结温度为500℃；e) Then prepare a layer of Au film 30 at both ends of the Al 2 O 3 ceramic tube 10 with a thickness of 500 μm, and lead out a Pt electrode 40 on the surface of the Au film 30, and the sintering temperature is 500° C.;
f)在Al2O3陶瓷管10的一端使用熔融淬冷法制作出敏感电极50，另一端的Pt电极40作为参比电极；f) making a sensitive electrode 50 at one end of the Al 2 O 3 ceramic tube 10 using a melt quenching method, and the Pt electrode 40 at the other end as a reference electrode;
g)然后将约50Ω的加热线圈20穿过Al2O3陶瓷管10作为加热器；g) passing a heating coil 20 of about 50Ω through the Al 2 O 3 ceramic tube 10 as a heater;
h)最后将导线焊接在Pt电极40和敏感电极50上，得到CO2气体传感器6。h) Finally, wires are welded on the Pt electrode 40 and the sensitive electrode 50 to obtain the CO 2 gas sensor 6 .
优选地，对本申请的配电柜中CO2气体传感器进行测试：取加热线圈中电流为150mA，用纯的CO2气体和空气混合以配备不同浓度的样气，其中CO2浓度的变化范围为500—8000×10-6体积分数，然后在测试电路中电阻不变的情况下，测试敏感电极和参比电极的电位差，并将该电位差(mV)随CO2气体浓度的曲线斜率定义为灵敏度，测试得到该CO2气体传感器的灵敏度为69，进而，本申请的配电柜能够实现对CO2气体的准确检测。Preferably, test the CO2 gas sensor in the power distribution cabinet of the present application: take the current in the heating coil as 150mA, mix pure CO2 gas with air to prepare sample gases with different concentrations, wherein the range of CO2 concentration is 500—8000×10 -6 volume fraction, and then under the condition of constant resistance in the test circuit, test the potential difference between the sensitive electrode and the reference electrode, and define the slope of the curve of the potential difference (mV) versus CO 2 gas concentration For the sensitivity, the test shows that the sensitivity of the CO 2 gas sensor is 69, and furthermore, the power distribution cabinet of the present application can realize accurate detection of CO 2 gas.
对本申请的配电柜中CO2气体传感器进行耐水性测试：将本申请的两个相同CO2气体传感器分别在相同浓度CO2的干燥样气和相对湿度为60％的样气中测试灵敏度，结果显示，灵敏度变化率为9％，表明该CO2气体传感器具有较好的耐水性，进而，当配电柜所处工作环境中湿度较大时，该配电柜仍能实现对CO2气体的准确检测，耐水性较好。Water resistance test of the CO2 gas sensor in the power distribution cabinet of this application: test the sensitivity of two identical CO2 gas sensors of this application in a dry sample gas with the same concentration of CO2 and a sample gas with a relative humidity of 60%. The results show that the sensitivity change rate is 9%, indicating that the CO 2 gas sensor has good water resistance. Furthermore, when the humidity in the working environment of the power distribution cabinet is high, the power distribution cabinet can still realize the detection of CO 2 gas. Accurate detection, good water resistance.
以上所述仅为本发明的较佳方式，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above is only a preferred mode of the present invention, and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention within.
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