CN103017939B - Novel temperature controller checking device - Google Patents
Novel temperature controller checking device Download PDFInfo
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- CN103017939B CN103017939B CN201210512460.3A CN201210512460A CN103017939B CN 103017939 B CN103017939 B CN 103017939B CN 201210512460 A CN201210512460 A CN 201210512460A CN 103017939 B CN103017939 B CN 103017939B
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Abstract
本发明涉及一种新型温度控制器校验装置。其特点是：包括检测电源，该检测电源的第一输出端分别与第二检测端子(A2)、第四检测端子(A4)、第六检测端子(A6)和第八检测端子(A8)连接，该检测电源的第二输出端通过串联的电铃与第一转换开关(Z1)的输入端连接，该第一转换开关(Z1)的两个输出端分别通过第一指示灯(L1)、第二指示灯(L2)接第一检测端子(A1)、第三检测端子(A3)，并且检测电源的第二输出端还通过串联的电铃与第二转换开关(Z2)的输入端连接。经过试用证明，采用本发明的新型温度控制器校验装置后，对温度控制器的校验时间大幅缩短，但校验结果准确可靠，从而有效提高了工作效率。
The invention relates to a novel temperature controller calibration device. It is characterized in that it includes a detection power supply, the first output end of which is respectively connected to the second detection terminal (A2), the fourth detection terminal (A4), the sixth detection terminal (A6) and the eighth detection terminal (A8) , the second output end of the detection power supply is connected to the input end of the first changeover switch (Z1) through the electric bell connected in series, and the two output ends of the first changeover switch (Z1) are respectively passed through the first indicator light (L1), the second The second indicator light (L2) is connected to the first detection terminal (A1) and the third detection terminal (A3), and the second output end of the detection power supply is also connected to the input end of the second transfer switch (Z2) through the electric bell connected in series. The trial proves that after adopting the novel temperature controller verification device of the present invention, the verification time of the temperature controller is greatly shortened, but the verification result is accurate and reliable, thereby effectively improving the working efficiency.
Description
技术领域technical field
本发明涉及一种新型温度控制器校验装置。The invention relates to a novel temperature controller calibration device.
背景技术Background technique
温度控制器广泛应用与电力系统的变压器中，分为油面温度控制器和绕组温度控制器，其主要作用就是提供温度指示、控制和发送信号。在变压器温度高时发送报警信号，并启动冷却系统对变压器进行降温，在无法降温、或者冷却系统故障时，提供跳闸信号，动作跳闸，保护变压器的安全。所以对温度控制器进行校验，是保证变压器设备安全稳定运行的必要手段之一。根据相关要求，温度控制器每3年必须校验一次。Temperature controllers are widely used in transformers in power systems, and are divided into oil surface temperature controllers and winding temperature controllers. Their main functions are to provide temperature indication, control and send signals. When the temperature of the transformer is high, an alarm signal is sent, and the cooling system is started to cool down the transformer. When the temperature cannot be lowered or the cooling system fails, a trip signal is provided to trip to protect the safety of the transformer. Therefore, the calibration of the temperature controller is one of the necessary means to ensure the safe and stable operation of the transformer equipment. According to relevant requirements, the temperature controller must be calibrated every 3 years.
在实际工作过程中，申请人发现温度控制器的校验存在很多困难：第一、设定点校验方式不合理；需要使用万用表的通断档一直接触在温度控制器的K节点上，利用继电器接通、断开万用表的蜂鸣声来记录设定点的温度温度。这样做费时费力，整个设定点校验过程至少持续1个多小时，试验人员需一直站在原地用万用表量取通断，对人的体力和精力都是极大的消耗。而且经常由于现场环境嘈杂等原因，设定点接通了，但是没有听到万用表蜂鸣声，错过了记录试验数据的时间，设定点校验被迫重复进行。第二、无法检查变送器的好坏；通常主变检修的时候温控器已失电，温控器的变送器无法输出4-20mA的电流信号，所以用万用表就无法量取输出电流，无法检查变送器的好坏。第三、无法检查铂热电阻PT100的线性输出情况；通常情况，我们检查铂热电阻PT100的电阻输出是否准确时，只是抽几个刻度点进行测量检查，但是部分铂热电阻PT100长时间使用后，输出电阻变得不稳定，原本的线性输出变为非线性，使得我们常规的抽查工作不能准确检查出铂热电阻PT100的好坏。In the actual work process, the applicant found that there are many difficulties in the verification of the temperature controller: first, the set point verification method is unreasonable; it is necessary to use the on-off gear of the multimeter to always touch the K node of the temperature controller, and use the relay Turn on and off the beep of the multimeter to record the set point temperature temperature. This is time-consuming and labor-intensive. The entire set-point calibration process lasts at least one hour. The test personnel have to stand in place and use a multimeter to measure the on-off, which consumes a lot of physical strength and energy. And often due to reasons such as the noisy environment on site, the set point is connected, but the beep of the multimeter is not heard, the time to record the test data is missed, and the set point verification is forced to be repeated. Second, it is impossible to check whether the transmitter is good or bad; usually when the main transformer is overhauled, the thermostat has lost power, and the transmitter of the thermostat cannot output a 4-20mA current signal, so the output current cannot be measured with a multimeter , unable to check whether the transmitter is good or bad. Third, it is impossible to check the linear output of platinum thermal resistance PT100; usually, when we check whether the resistance output of platinum thermal resistance PT100 is accurate, we only take a few scale points for measurement and inspection, but some platinum thermal resistance PT100 will , the output resistance becomes unstable, and the original linear output becomes nonlinear, which makes our routine spot check work unable to accurately check whether the platinum thermal resistance PT100 is good or bad.
发明内容Contents of the invention
本发明的目的是提供一种校验结果准确度高、使用方便的新型温度控制器校验装置。The purpose of the present invention is to provide a novel temperature controller calibration device with high calibration result accuracy and easy use.
一种新型温度控制器校验装置，其特别之处在于：包括检测电源，该检测电源的第一输出端分别与第二检测端子、第四检测端子、第六检测端子和第八检测端子连接，该检测电源的第二输出端通过串联的电铃与第一转换开关的输入端连接，该第一转换开关的两个输出端分别通过第一指示灯、第二指示灯接第一检测端子、第三检测端子，并且检测电源的第二输出端还通过串联的电铃与第二转换开关的输入端连接，该第二转换开关的两个输出端分别通过第三指示灯、第四指示灯接第五检测端子、第七检测端子。A new type of temperature controller calibration device, which is special in that it includes a detection power supply, the first output end of which is respectively connected to the second detection terminal, the fourth detection terminal, the sixth detection terminal and the eighth detection terminal , the second output end of the detection power supply is connected to the input end of the first transfer switch through the electric bell connected in series, and the two output ends of the first transfer switch are respectively connected to the first detection terminal, The third detection terminal, and the second output end of the detection power supply is also connected to the input end of the second changeover switch through the electric bell in series, and the two output ends of the second changeover switch are respectively connected through the third indicator light and the fourth indicator light. The fifth detection terminal and the seventh detection terminal.
其中还包括电阻型数显表，该电阻型数显表分别与三个铂热电阻检测端子连接。It also includes a resistance type digital display meter, which is respectively connected with three platinum thermal resistance detection terminals.
其中还包括24V直流电源，该24V直流电源的正极与第一变送器检测端子连接，并且该24V直流电源的负极通过电流型数显表与第二变送器检测端子连接。It also includes a 24V DC power supply, the positive pole of the 24V DC power supply is connected to the detection terminal of the first transmitter, and the negative pole of the 24V DC power supply is connected to the detection terminal of the second transmitter through a current-type digital display meter.
其中检测电源采用交流市电，其第一输出端为火线，而第二输出端为零线。Wherein the detection power supply adopts AC commercial power, the first output end of which is a live wire, and the second output end is a neutral wire.
经过试用证明，采用本发明的新型温度控制器校验装置后，对温度控制器的校验时间大幅缩短，但校验结果准确可靠，从而有效提高了工作效率。The trial proves that after adopting the novel temperature controller verification device of the present invention, the verification time of the temperature controller is greatly shortened, but the verification result is accurate and reliable, thereby effectively improving the working efficiency.
附图说明Description of drawings
附图1为本发明的电路原理图。Accompanying drawing 1 is the circuit schematic diagram of the present invention.
具体实施方式Detailed ways
如图1所示，本发明是一种新型温度控制器校验装置，包括检测电源，该检测电源的第一输出端分别与第二检测端子A2、第四检测端子A4、第六检测端子A6和第八检测端子A8连接，该检测电源的第二输出端通过串联的电铃与第一转换开关Z1的输入端连接，该第一转换开关Z1的两个输出端分别通过第一指示灯L1、第二指示灯L2接第一检测端子A1、第三检测端子A3，并且检测电源的第二输出端还通过串联的电铃与第二转换开关Z2的输入端连接，该第二转换开关Z2的两个输出端分别通过第三指示灯L3、第四指示灯L4接第五检测端子A5、第七检测端子A7。As shown in Figure 1, the present invention is a new type of temperature controller calibration device, including a detection power supply, the first output end of the detection power supply is connected to the second detection terminal A2, the fourth detection terminal A4, and the sixth detection terminal A6 respectively. It is connected to the eighth detection terminal A8, the second output end of the detection power supply is connected to the input end of the first changeover switch Z1 through a series electric bell, and the two output ends of the first changeover switch Z1 are respectively connected through the first indicator light L1, The second indicator light L2 is connected to the first detection terminal A1 and the third detection terminal A3, and the second output end of the detection power supply is also connected to the input end of the second changeover switch Z2 through a series electric bell, and the two ends of the second changeover switch Z2 The two output ends are respectively connected to the fifth detection terminal A5 and the seventh detection terminal A7 through the third indicator light L3 and the fourth indicator light L4.
其中还包括电阻型数显表，该电阻型数显表分别与三个铂热电阻检测端子(即端子B1、端子B2、端子B3)连接，以及24V直流电源，该24V直流电源的正极与第一变送器检测端子C1连接，并且该24V直流电源的负极通过电流型数显表与第二变送器检测端子C2连接。检测电源具体可以采用交流市电，其第一输出端为火线，而第二输出端为零线。It also includes a resistance type digital display meter, which is connected to three platinum thermal resistance detection terminals (terminal B1, terminal B2, terminal B3) respectively, and a 24V DC power supply, the positive pole of the 24V DC power supply is connected to the first A transmitter detection terminal C1 is connected, and the negative pole of the 24V DC power supply is connected to the second transmitter detection terminal C2 through a current-type digital display meter. Specifically, the detection power supply may be an AC mains power supply, the first output end of which is a live wire, and the second output end is a neutral wire.
本发明的使用方法是：The using method of the present invention is:
如图1所示，使用时将第一检测端子至第八检测端子A1-A8接温度控制器的四个继电器输出端K1-K4，三个铂热电阻检测端子(即端子B1、端子B2、端子B3)接铂热电阻PT100，第一变送器检测端子C1和第二变送器检测端子C2接变送器。通过第一转换开关Z1和第二转换开关Z2可以控制相应回路的通、断从而配合相应节点的校验，电铃和第一指示灯至第四指示灯L1-L4用于提醒。As shown in Figure 1, when in use, connect the first detection terminal to the eighth detection terminal A1-A8 to the four relay output terminals K1-K4 of the temperature controller, and the three platinum thermal resistance detection terminals (that is, terminal B1, terminal B2, Terminal B3) is connected to the platinum thermal resistance PT100, and the first transmitter detection terminal C1 and the second transmitter detection terminal C2 are connected to the transmitter. The first transfer switch Z1 and the second transfer switch Z2 can control the on and off of the corresponding loop to cooperate with the verification of the corresponding node. The electric bell and the first to fourth indicator lights L1-L4 are used for reminders.
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| CN103776553B (en) * | 2014-02-17 | 2016-06-15 | 国家电网公司 | Transformator or reactor oil temperature detect and analog |
| CN106159481A (en) * | 2016-08-16 | 2016-11-23 | 国网天津市电力公司 | A kind of for the adapter between oil-filled transformer temperature controller and on-site cable outlet |
| CN107065827A (en) * | 2017-03-24 | 2017-08-18 | 国网福建省电力有限公司 | Digital three-phase temperature controller p-wire |
| CN108362402A (en) * | 2018-04-02 | 2018-08-03 | 广东电网有限责任公司 | A kind of winding temperature table copper oil temperature difference simulation test device |
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| CN2695936Y (en) * | 2004-05-31 | 2005-04-27 | 孙立红 | Intelligent thermometer calibrater |
| US7669427B2 (en) * | 2006-06-14 | 2010-03-02 | Fluke Corporation | Temperature calibration device driving heating/cooling modules in a manner to allow operation over wide temperature range |
| CN101750172B (en) * | 2010-01-11 | 2011-11-16 | 重庆大学 | Device and method for detecting temperature characteristics of temperature sensor |
| CN202562655U (en) * | 2012-03-30 | 2012-11-28 | 辽宁省电力有限公司朝阳供电公司 | Automatic temperature calibration stand |
| CN202928723U (en) * | 2012-12-05 | 2013-05-08 | 宁夏电力公司检修公司 | A new type of temperature controller calibration device |
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