WO2021168960A1 - Online monitoring system for cooling performance of quenching medium - Google Patents
Online monitoring system for cooling performance of quenching medium Download PDFInfo
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- WO2021168960A1 WO2021168960A1 PCT/CN2020/081332 CN2020081332W WO2021168960A1 WO 2021168960 A1 WO2021168960 A1 WO 2021168960A1 CN 2020081332 W CN2020081332 W CN 2020081332W WO 2021168960 A1 WO2021168960 A1 WO 2021168960A1
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- quenching medium
- cooling performance
- monitoring system
- online monitoring
- control unit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
Definitions
- the invention relates to an online monitoring system for the cooling performance of a quenching medium, which belongs to the technical field of metal processing oil.
- cooling curve method is the most intuitive and effective test method to reflect the cooling capacity of the quenching medium. Since the 1960s, the cooling characteristic curve method has been tested all over the world, and is committed to forming relevant standards.
- the cooling curve method generally uses a probe equipped with a thermocouple, heated in a tubular air furnace, and then transferred to the medium to be measured, and the cooling process is recorded.
- the most commonly used probes include nickel alloy central temperature probes in the United States, Sweden, and the United Kingdom, surface temperature silver probes in Japan, and central temperature silver probes in France.
- nickel alloy probes have been recommended by the International Organization for Standardization (IFHT). It is an international standard, namely ISO 9950:1995 "Industrial quenching oil-Determination of cooling characteristics-Nickel-alloy probe test method".
- the above-mentioned cooling curve method is only used in the laboratory to test the cooling performance of the quenching medium.
- the performance indicators are very different, and the quality is uneven, and the quenching medium will undergo dynamic changes in performance during the use process.
- the inability of enterprises to effectively monitor the cooling performance of the quenching medium in a timely manner will ultimately affect the product quality and batch stability of my country's equipment manufacturing industry.
- the timeliness of feedback is poor, and the maintenance and control of the processing fluid cannot be performed in time, which affects the quality of processed products.
- the present invention provides an online monitoring system for the cooling performance of the quenching medium, which can monitor the cooling performance of the quenching medium on the production site in real time.
- An on-line monitoring system for the cooling performance of a quenching medium comprising a measurement sensor placed in the quenching medium.
- the measurement sensor is composed of an induction coil and a standard probe placed in the geometric center of the induction coil; it also includes an induction heating electrically connected to the induction coil
- the power supply and the control unit connected with the standard probe through the cable, and the control unit is connected with the induction heating power supply through the cable at the same time.
- the standard probe is a probe specified by the GB/T 30823 standard or the SH/T 0220 standard.
- the cross-sectional diameter of the wire used in the induction coil is 3-8mm
- the inner diameter of the coil is 15-25mm
- the number of turns of the coil is 6-12
- the height of the coil is 80-150mm.
- the induction coil is wound with dense ends and sparse middle, that is, the interval between adjacent turns at both ends of the induction coil is 0.1 ⁇ 0.2mm, and the interval between adjacent turns in the middle of the induction coil is 3 ⁇ 5mm .
- the induction heating power supply is connected to 380V three-phase alternating current.
- the induction heating power supply has a circulating cooling unit.
- control unit includes a wireless communication module, and the control unit is connected to the remote control terminal through the wireless communication module.
- control unit is located in the industrial site, it has a display screen, the display screen can display the relevant data of the quenching medium monitored in real time, the control unit may also include an alarm module, such as a horn, when the control unit monitors the quenching through the measuring sensor When the cooling performance of the medium cannot meet the use requirements, promptly alert the operators at the industrial site to replace the quenching medium.
- alarm module such as a horn
- the working principle of the on-line monitoring system for the cooling performance of the quenching medium of the present invention The entire measuring sensor is placed in the quenching tank containing the quenching medium at the industrial site, and the control unit controls the induction power supply to start heating.
- the induction heating power supply When it is switched on (the input power of the induction heating power supply is greater than 8KW at this time), the surface temperature of the standard probe exceeds the Leidenfrost temperature of the measured medium and a stable vapor film is formed on the surface of the standard probe.
- the standard probe In the presence of the vapor film, the standard probe can be heated up to 850°C as a whole), and finally when the overall temperature of the standard probe in the quenching medium reaches 850°C (in the quenching process, the workpiece generally starts to contact the quenching medium and start to be quenched), the control unit controls the induction heating
- the power supply stops heating, the quenching medium cools down the standard probe, the control unit collects the real-time temperature of the standard probe, and calculates the cooling performance of the quenching medium in combination with the time parameter, and displays the corresponding data on the display screen, and at the same time passes the collected information through
- the wireless communication module is transmitted to the remote control terminal.
- the system of the present invention uses electromagnetic induction immersion heating method for heating, which solves the problem that the existing quenching medium cooling characteristic test cannot be detected online.
- the measurement sensor of the system of the present invention is directly placed in the quenching tank containing the quenching medium.
- the cooling performance of the on-site quenching medium is monitored in real time, so as to assist the on-site operators in the effective operation and maintenance of the quenching medium, thereby improving the quality stability of the quenching product.
- Figure 1 is a system schematic diagram of the online monitoring system for quenching medium cooling performance of the present invention
- Figure 2 is a schematic diagram of the structure of the induction coil.
- the online monitoring system for the cooling performance of the quenching medium of the present invention includes a measuring sensor 1 placed in the quenching medium 6.
- the measuring sensor 1 consists of an induction coil 2 and a standard probe 3 placed in the geometric center of the induction coil 2.
- the composition, that is, the standard probe 3 and the induction coil 2 are fixed together to form the measuring sensor 1 immersed in the medium 6 to be measured, and the measuring sensor 1 is directly placed in the quenching tank 7 containing the quenching medium 6 in the industrial site for online monitoring; the quenching of the present invention
- the online monitoring system for medium cooling performance also includes an induction heating power supply 4 electrically connected to the induction coil 2 and a control unit 5 connected to the standard probe 3 through a cable.
- the control unit 5 is simultaneously connected to the induction heating power supply 4 through a cable; wherein, the present invention
- the standard probe 3 used is a nickel alloy probe specified by the GB/T 30823 standard.
- the wire turns at both ends of the induction coil 2 used in the online monitoring system of the present invention are dense (that is, the vertical distance between adjacent wires at both ends of the coil is 0.1 ⁇ 0.2mm), and the wire turns in the middle are sparse (that is, adjacent wires in the middle of the coil).
- the vertical distance of the induction coil 2 is 3 ⁇ 5mm
- the winding method of the induction coil 2 is to compensate the upper and lower parts of the coil, so that the two ends of the standard probe 3 have greater specific surface power, and the heating temperature at both ends of the compensation is caused by the fast cooling speed. The problem of unevenness.
- the induction coil 2 requires that the cross-sectional diameter A of the wire is 3 ⁇ 8mm, the inner diameter B of the coil (the circle enclosed by the wire) is 15 ⁇ 25mm, the number of turns of the coil is 6 ⁇ 12, and the height of the coil C is 80. ⁇ 150mm, so as to ensure the uniformity of the temperature of the entire standard probe 3.
- the thermocouple in the standard probe reflects the overall temperature of the standard probe (rather than the local temperature at the thermocouple), the measurement result is more accurate.
- the induction heating power supply 4 of the present invention is connected to a 380V three-phase alternating current, with an effective output power> 8Kw, can output a high-frequency oscillating current, and the working frequency range is 30KHz-100KHz.
- the induction heating power supply 4 can ensure the specific surface power of the surface of the standard probe 3, the output oscillation power of the induction heating power supply 4 is greater than 20Kw, and the effective output power is greater than 8Kw.
- the induction heating power supply 4 is equipped with a circulating cooling unit 9.
- the circulating cooling unit 9 adopts dual-channel water cooling or oil cooling to cool the induction heating power supply 4 to prevent the IGBT driver and related components from overheating and damage.
- the induction heating power supply 4 can adjust the output oscillating current of the induction heating power supply 4 through the control unit 5, thereby adjusting the heating speed. According to the heat exchange capacity of the quenching medium, select the appropriate heating current output, and can also control the induction heating power supply according to the event trigger 4 start and stop, you can start the monitoring of the quenching medium at any time as needed. You can set a fixed time or cycle for monitoring, or you can set trigger events based on the process, such as quenching transfer, furnace door opening, etc.
- the data acquisition module in the control unit 5 records the heating and cooling process of the standard probe 3, and calculates the key characteristic indexes such as the vapor film formation temperature, upper characteristic temperature, lower characteristic temperature, and maximum cooling rate of the quenching medium, so as to obtain the quenching medium Cooling performance.
- the control unit 5 of the present invention is located at an industrial site and includes a wireless communication module.
- the control unit 5 is connected to a remote control terminal through the wireless communication module.
- the control unit also has a display screen 8.
- the display screen 8 can display relevant data of the quenching medium monitored in real time
- the control unit 5 may also include an alarm module, such as a horn.
- the online monitoring system of the present invention uses electromagnetic induction to provide high specific surface power, and standard probe 3 is immersed in liquid for heating and cooling, thereby realizing online monitoring of quenching medium cooling performance.
Abstract
An online monitoring system for cooling performance of a quenching medium. The system comprises a measurement sensor (1) disposed in a quenching medium (6). The measurement sensor (1) is composed of an induction coil (2) and a standard probe (3) arranged at the geometric center of the induction coil (2). The system further comprises an induction heating power supply (4) electrically connected to the induction coil (2) and a control unit (5) connected to the standard probe (3) by means of a cable, and the control unit (5) is connected to the induction heating power supply (4) by means of the cable. The online monitoring system can monitor the cooling performance of the quenching medium (6) in real time in the production site.
Description
本发明涉及一种淬火介质冷却性能的在线监测***，属于金属加工油技术领域。 The invention relates to an online monitoring system for the cooling performance of a quenching medium, which belongs to the technical field of metal processing oil.
淬火介质冷却性能的测试方法有很多种，如端淬试验法、硬度U曲线法、淬火烈度法、磁性试验法、热丝法、5秒间隔试验法、冷却曲线法等，其中冷却曲线法被公认为是最佳的实验室淬火介质冷却性能测定方法，因此应用也最为广泛。冷却特性曲线法是一种最为直观有效的反映淬火介质冷却能力的一种测试手段，从上世纪60年代开始，全世界范围内开始进行冷却特性曲线法的试验，并致力于形成相关的标准。There are many methods for testing the cooling performance of quenching medium, such as end quenching test method, hardness U curve method, quenching intensity method, magnetic test method, hot wire method, 5-second interval test method, cooling curve method, etc., among which the cooling curve method is It is recognized as the best laboratory quenching medium cooling performance measurement method, so it is the most widely used. The cooling characteristic curve method is the most intuitive and effective test method to reflect the cooling capacity of the quenching medium. Since the 1960s, the cooling characteristic curve method has been tested all over the world, and is committed to forming relevant standards.
冷却曲线法一般采用把装有热电偶的探头，在管式空气炉中加热，后转移至待测介质中，记录其冷却过程。当前，使用较多的探头有美国、瑞典、英国的镍合金中心测温探头，日本的表面测温银探头，法国的中心测温银探头，其中镍合金探头已经被国际标准化组织(IFHT)推荐为国际标准，即ISO 9950:1995《Industrial quenching oil-Determination of cooling
characteristics-Nickel-alloy probe test method》。目前国内并行两个标准ISO 9950(GB/T 30823等同转换ISO9950)和SH/T 0220，其中ISO 9950应用最为广泛。国内淬火介质生产企业绝大部分采用ISO 9950标准进行冷却特性测试，而且部分热处理生产单位也配备了冷却特性测试仪，这对镍合金探头标准的推广具有很大的推动作用。The cooling curve method generally uses a probe equipped with a thermocouple, heated in a tubular air furnace, and then transferred to the medium to be measured, and the cooling process is recorded. Currently, the most commonly used probes include nickel alloy central temperature probes in the United States, Sweden, and the United Kingdom, surface temperature silver probes in Japan, and central temperature silver probes in France. Among them, nickel alloy probes have been recommended by the International Organization for Standardization (IFHT). It is an international standard, namely ISO 9950:1995 "Industrial quenching oil-Determination of cooling
characteristics-Nickel-alloy probe test method". At present, there are two parallel domestic standards ISO 9950 (GB/T 30823 equivalent to ISO9950) and SH/T 0220, of which ISO 9950 is the most widely used. The majority of domestic quenching medium manufacturers adopt ISO 9950 standards for cooling characteristics testing, and some heat treatment production units are also equipped with cooling characteristics testers, which greatly promotes the promotion of nickel alloy probe standards.
目前，上述冷却曲线法仅应用于实验室检测淬火介质冷却性能，国内淬火介质制造企业众多，性能指标差异很大，质量参差不齐，而淬火介质在使用过程中都会发生性能的动态变化，制造企业无法及时有效监控淬火介质冷却性能，最终影响我国装备制造业产品质量及其批次的稳定性。且通过委托专业厂家在实验室进行离线检测分析，反馈的及时性差，不能及时进行加工液的维护和控制，进而影响加工产品质量。At present, the above-mentioned cooling curve method is only used in the laboratory to test the cooling performance of the quenching medium. There are many domestic quenching medium manufacturers, the performance indicators are very different, and the quality is uneven, and the quenching medium will undergo dynamic changes in performance during the use process. The inability of enterprises to effectively monitor the cooling performance of the quenching medium in a timely manner will ultimately affect the product quality and batch stability of my country's equipment manufacturing industry. Moreover, by entrusting professional manufacturers to conduct offline testing and analysis in the laboratory, the timeliness of feedback is poor, and the maintenance and control of the processing fluid cannot be performed in time, which affects the quality of processed products.
为解决现有技术中的问题，本发明提供一种淬火介质冷却性能的在线监测***，该***能够对生产现场淬火介质的冷却性能进行实时监测。In order to solve the problems in the prior art, the present invention provides an online monitoring system for the cooling performance of the quenching medium, which can monitor the cooling performance of the quenching medium on the production site in real time.
一种淬火介质冷却性能的在线监测***，包括置于淬火介质中的测量传感器，所述测量传感器由感应线圈以及放置在感应线圈几何中心的标准探头组成；还包括与感应线圈电连接的感应加热电源以及与标准探头通过电缆连接的控制单元，控制单元同时通过电缆与感应加热电源连接。An on-line monitoring system for the cooling performance of a quenching medium, comprising a measurement sensor placed in the quenching medium. The measurement sensor is composed of an induction coil and a standard probe placed in the geometric center of the induction coil; it also includes an induction heating electrically connected to the induction coil The power supply and the control unit connected with the standard probe through the cable, and the control unit is connected with the induction heating power supply through the cable at the same time.
其中，所述标准探头为GB/T 30823标准或SH/T 0220标准指定的探头。Wherein, the standard probe is a probe specified by the GB/T 30823 standard or the SH/T 0220 standard.
其中，所述感应线圈使用的电线截面直径为3~8mm、线圈的内径为15~25mm、线圈的匝数为6~12、线圈的高度为80~150mm。Wherein, the cross-sectional diameter of the wire used in the induction coil is 3-8mm, the inner diameter of the coil is 15-25mm, the number of turns of the coil is 6-12, and the height of the coil is 80-150mm.
其中，所述感应线圈呈两端密，中间疏的方式扎制，即感应线圈两端相邻匝之间的间隔为0.1~0.2mm，感应线圈中部相邻匝之间的间隔为3~5mm。Wherein, the induction coil is wound with dense ends and sparse middle, that is, the interval between adjacent turns at both ends of the induction coil is 0.1~0.2mm, and the interval between adjacent turns in the middle of the induction coil is 3~5mm .
其中，所述感应加热电源接380V三相交流电。Wherein, the induction heating power supply is connected to 380V three-phase alternating current.
其中，所述感应加热电源带有循环冷却单元。Wherein, the induction heating power supply has a circulating cooling unit.
其中，所述控制单元包括无线通讯模块，控制单元通过无线通讯模块与远程控制终端连接。Wherein, the control unit includes a wireless communication module, and the control unit is connected to the remote control terminal through the wireless communication module.
其中，所述控制单元位于工业现场，其带有显示屏，显示屏能够实时显示监测到的淬火介质的相关数据，控制单元还可以包括报警模块，如喇叭，当控制单元通过测量传感器监测到淬火介质冷却性能不能满足使用要求时，及时告警给工业现场的操作人员，进而对淬火介质进行更换。Wherein, the control unit is located in the industrial site, it has a display screen, the display screen can display the relevant data of the quenching medium monitored in real time, the control unit may also include an alarm module, such as a horn, when the control unit monitors the quenching through the measuring sensor When the cooling performance of the medium cannot meet the use requirements, promptly alert the operators at the industrial site to replace the quenching medium.
本发明淬火介质冷却性能的在线监测***的工作原理：将整个测量传感器置于工业现场盛有淬火介质的淬火槽里，控制单元控制感应电源开始加热，通过特定的感应线圈结构，在感应加热电源接通瞬时（感应加热电源输入功率此时大于8KW）标准探头表面温度超过待测介质的Leidenfrost 温度并在标准探头表面形成稳定蒸汽膜（蒸汽膜导热慢，另外导热速率没有加热速率块，因此在蒸汽膜的存在下标准探头能够整体升温至850℃），最终标准探头在淬火介质中整体温度达到850℃时（工件在淬火过程一般从850℃开始接触淬火介质开始淬火），控制单元控制感应加热电源停止加热，淬火介质对标准探头进行冷却降温，控制单元采集标准探头的实时温度，结合时间参数计算得到淬火介质的冷却性能，并将对应数据显示在显示屏上，同时将采集到的信息通过无线通讯模块传输给远程控制终端。The working principle of the on-line monitoring system for the cooling performance of the quenching medium of the present invention: The entire measuring sensor is placed in the quenching tank containing the quenching medium at the industrial site, and the control unit controls the induction power supply to start heating. Through the specific induction coil structure, the induction heating power supply When it is switched on (the input power of the induction heating power supply is greater than 8KW at this time), the surface temperature of the standard probe exceeds the Leidenfrost temperature of the measured medium and a stable vapor film is formed on the surface of the standard probe. In the presence of the vapor film, the standard probe can be heated up to 850°C as a whole), and finally when the overall temperature of the standard probe in the quenching medium reaches 850°C (in the quenching process, the workpiece generally starts to contact the quenching medium and start to be quenched), the control unit controls the induction heating The power supply stops heating, the quenching medium cools down the standard probe, the control unit collects the real-time temperature of the standard probe, and calculates the cooling performance of the quenching medium in combination with the time parameter, and displays the corresponding data on the display screen, and at the same time passes the collected information through The wireless communication module is transmitted to the remote control terminal.
本发明***采用电磁感应浸液加热的方式进行加热，解决了现有淬火介质冷却特性测试无法在线检测的难题，本发明***的测量传感器直接放置在盛有淬火介质的淬火槽内，能够对生产现场淬火介质的冷却性能进行实时监测，从而辅助现场操作人员对淬火介质进行有效的运维，进而提高淬火产品的质量稳定性。The system of the present invention uses electromagnetic induction immersion heating method for heating, which solves the problem that the existing quenching medium cooling characteristic test cannot be detected online. The measurement sensor of the system of the present invention is directly placed in the quenching tank containing the quenching medium. The cooling performance of the on-site quenching medium is monitored in real time, so as to assist the on-site operators in the effective operation and maintenance of the quenching medium, thereby improving the quality stability of the quenching product.
图1为 本发明淬火介质冷却性能的在线监测***的***原理图；Figure 1 is a system schematic diagram of the online monitoring system for quenching medium cooling performance of the present invention;
图2 为感应线圈的结构示意图。Figure 2 is a schematic diagram of the structure of the induction coil.
下面结合附图和具体实施例对本发明技术方案作进一步阐述。The technical solution of the present invention will be further described below in conjunction with the drawings and specific embodiments.
如图1~2所示，本发明淬火介质冷却性能的在线监测***，包括置于淬火介质6中的测量传感器1，测量传感器1由感应线圈2以及放置在感应线圈2几何中心的标准探头3组成，即标准探头3同感应线圈2固定在一起组成测量传感器1浸入待测介质6中，测量传感器1直接放置在工业现场中盛有淬火介质6的淬火槽7内进行在线监测；本发明淬火介质冷却性能的在线监测***还包括与感应线圈2电连接的感应加热电源4以及与标准探头3通过电缆连接的控制单元5，控制单元5同时通过电缆与感应加热电源4连接；其中，本发明使用的标准探头3为GB/T 30823标准指定的镍合金探头。As shown in Figures 1~2, the online monitoring system for the cooling performance of the quenching medium of the present invention includes a measuring sensor 1 placed in the quenching medium 6. The measuring sensor 1 consists of an induction coil 2 and a standard probe 3 placed in the geometric center of the induction coil 2. The composition, that is, the standard probe 3 and the induction coil 2 are fixed together to form the measuring sensor 1 immersed in the medium 6 to be measured, and the measuring sensor 1 is directly placed in the quenching tank 7 containing the quenching medium 6 in the industrial site for online monitoring; the quenching of the present invention The online monitoring system for medium cooling performance also includes an induction heating power supply 4 electrically connected to the induction coil 2 and a control unit 5 connected to the standard probe 3 through a cable. The control unit 5 is simultaneously connected to the induction heating power supply 4 through a cable; wherein, the present invention The standard probe 3 used is a nickel alloy probe specified by the GB/T 30823 standard.
本发明在线监测***中所使用的感应线圈2两端的电线匝的很密（即线圈两端相邻电线的垂直距离为0.1~0.2mm），中部的电线匝的稀疏（即线圈中部相邻电线的垂直距离为3~5mm），感应线圈2这样的扎制方式是为了进行线圈上部和下部补偿，使标准探头3两端具有更大的比表面功率，补偿两端因冷却速度快导致加热温度不均匀的问题，感应线圈2要求电线的截面直径A为3~8mm、线圈（电线围合的圆圈）的内径B为15~25mm、线圈的匝数为6~12、线圈的高度C为80~150mm，从而保证整个标准探头3温度的均匀性，标准探头3表面升温的均匀性越高，在标准探头3表面形成的蒸汽膜越大、越完整，从而各处加热的温度更均衡，此时标准探头内热电偶反应的即是标准探头整体的温度（而不是热电偶处的局部温度），从而使测量结果越准确。The wire turns at both ends of the induction coil 2 used in the online monitoring system of the present invention are dense (that is, the vertical distance between adjacent wires at both ends of the coil is 0.1~0.2mm), and the wire turns in the middle are sparse (that is, adjacent wires in the middle of the coil). The vertical distance of the induction coil 2 is 3~5mm), the winding method of the induction coil 2 is to compensate the upper and lower parts of the coil, so that the two ends of the standard probe 3 have greater specific surface power, and the heating temperature at both ends of the compensation is caused by the fast cooling speed. The problem of unevenness. The induction coil 2 requires that the cross-sectional diameter A of the wire is 3~8mm, the inner diameter B of the coil (the circle enclosed by the wire) is 15~25mm, the number of turns of the coil is 6~12, and the height of the coil C is 80. ~150mm, so as to ensure the uniformity of the temperature of the entire standard probe 3. The higher the uniformity of the temperature of the surface of the standard probe 3, the larger and more complete the vapor film formed on the surface of the standard probe 3, so that the heating temperature everywhere is more balanced. When the thermocouple in the standard probe reflects the overall temperature of the standard probe (rather than the local temperature at the thermocouple), the measurement result is more accurate.
本发明感应加热电源4接380V三相交流电，有效输出功率＞8Kw，可以输出高频振荡电流，工作频率范围在30KHz-100KHz。感应加热电源4能够保证标准探头3表面的比表面功率，感应加热电源4的输出振荡功率大于20Kw，有效输出功率大于8Kw。同时感应加热电源4带有循环冷却单元9，循环冷却单元9采用双通路水冷或油冷对感应加热电源4降温，防止其中的IGBT驱动器和相关器件过热损坏。感应加热电源4可通过控制单元5调节感应加热电源4输出振荡电流的大小，从而调节加热速度，根据淬火介质换热能力的不同，选择合适的加热电流输出，还可以根据事件触发控制感应加热电源4的启动和停止，即可随时根据需要启动对淬火介质的监测。即可设置固定时间或周期进行监测，也可根据工艺过程设置触发事件，如淬火转移、炉门开启等。控制单元5中的数据采集模块记录标准探头3的加热和冷却过程，通过计算输出淬火介质的蒸汽膜形成温度、上特性温度、下特性温度、最大冷速等关键特性指标，从而得到淬火介质的冷却性能。The induction heating power supply 4 of the present invention is connected to a 380V three-phase alternating current, with an effective output power> 8Kw, can output a high-frequency oscillating current, and the working frequency range is 30KHz-100KHz. The induction heating power supply 4 can ensure the specific surface power of the surface of the standard probe 3, the output oscillation power of the induction heating power supply 4 is greater than 20Kw, and the effective output power is greater than 8Kw. At the same time, the induction heating power supply 4 is equipped with a circulating cooling unit 9. The circulating cooling unit 9 adopts dual-channel water cooling or oil cooling to cool the induction heating power supply 4 to prevent the IGBT driver and related components from overheating and damage. The induction heating power supply 4 can adjust the output oscillating current of the induction heating power supply 4 through the control unit 5, thereby adjusting the heating speed. According to the heat exchange capacity of the quenching medium, select the appropriate heating current output, and can also control the induction heating power supply according to the event trigger 4 start and stop, you can start the monitoring of the quenching medium at any time as needed. You can set a fixed time or cycle for monitoring, or you can set trigger events based on the process, such as quenching transfer, furnace door opening, etc. The data acquisition module in the control unit 5 records the heating and cooling process of the standard probe 3, and calculates the key characteristic indexes such as the vapor film formation temperature, upper characteristic temperature, lower characteristic temperature, and maximum cooling rate of the quenching medium, so as to obtain the quenching medium Cooling performance.
本发明控制单元5位于工业现场，包括无线通讯模块，控制单元5通过无线通讯模块与远程控制终端连接，控制单元还带有显示屏8，显示屏8能够实时显示监测到的淬火介质的相关数据，控制单元5还可以包括报警模块，如喇叭，当控制单元5通过测量传感器1监测到淬火介质冷却性能不能满足使用要求时，及时告警给工业现场的操作人员，进而对淬火介质进行更换。The control unit 5 of the present invention is located at an industrial site and includes a wireless communication module. The control unit 5 is connected to a remote control terminal through the wireless communication module. The control unit also has a display screen 8. The display screen 8 can display relevant data of the quenching medium monitored in real time The control unit 5 may also include an alarm module, such as a horn. When the control unit 5 detects that the quenching medium cooling performance cannot meet the use requirements through the measuring sensor 1, it will promptly alert the operators at the industrial site to replace the quenching medium.
本发明在线监测***采用电磁感应方式提供高的比表面功率，标准探头3浸液方式进行加热和冷却，从而实现淬火介质冷却性能的在线式监测。The online monitoring system of the present invention uses electromagnetic induction to provide high specific surface power, and standard probe 3 is immersed in liquid for heating and cooling, thereby realizing online monitoring of quenching medium cooling performance.
Claims (9)
- 一种淬火介质冷却性能的在线监测***，其特征在于：包括置于淬火介质中的测量传感器，所述测量传感器由感应线圈以及放置在感应线圈几何中心的标准探头组成；还包括与感应线圈电连接的感应加热电源以及与标准探头通过电缆连接的控制单元，控制单元同时通过电缆与感应加热电源连接。An online monitoring system for the cooling performance of a quenching medium, which is characterized in that it includes a measurement sensor placed in the quenching medium. The measurement sensor is composed of an induction coil and a standard probe placed at the geometric center of the induction coil; The connected induction heating power supply and the control unit connected with the standard probe through a cable, and the control unit is simultaneously connected with the induction heating power supply through the cable.
- 根据权利要求1所述的淬火介质冷却性能的在线监测***，其特征在于：所述标准探头为GB/T 30823标准或SH/T 0220标准指定的探头。The online monitoring system for the cooling performance of the quenching medium according to claim 1, wherein the standard probe is a probe specified by the GB/T 30823 standard or the SH/T 0220 standard.
- 根据权利要求1所述的淬火介质冷却性能的在线监测***，其特征在于：所述感应线圈使用的电线截面直径为3~8mm、线圈的内径为15~25mm、线圈的匝数为6~12、线圈的高度为80~150mm。The online monitoring system for the cooling performance of the quenching medium according to claim 1, wherein the diameter of the wire used in the induction coil is 3~8mm, the inner diameter of the coil is 15~25mm, and the number of turns of the coil is 6~12. , The height of the coil is 80~150mm.
- 根据权利要求3所述的淬火介质冷却性能的在线监测***，其特征在于：所述感应线圈呈两端密，中间疏的方式扎制。The online monitoring system for the cooling performance of the quenching medium according to claim 3, wherein the induction coil is wound in a manner that the two ends are dense and the middle is sparse.
- 根据权利要求4所述的淬火介质冷却性能的在线监测***，其特征在于：所述感应线圈两端相邻匝之间的间隔为0.1~0.2mm，感应线圈中部相邻匝之间的间隔为3~5mm。The online monitoring system for the cooling performance of the quenching medium according to claim 4, wherein the interval between adjacent turns at both ends of the induction coil is 0.1~0.2mm, and the interval between adjacent turns in the middle of the induction coil is 3~5mm.
- 根据权利要求1所述的淬火介质冷却性能的在线监测***，其特征在于：所述感应加热电源接380V三相交流电。The online monitoring system for the cooling performance of the quenching medium according to claim 1, wherein the induction heating power supply is connected to a 380V three-phase alternating current.
- 根据权利要求1所述的淬火介质冷却性能的在线监测***，其特征在于：所述感应加热电源带有循环冷却单元。The online monitoring system for the cooling performance of the quenching medium according to claim 1, wherein the induction heating power supply has a circulating cooling unit.
- 根据权利要求1所述的淬火介质冷却性能的在线监测***，其特征在于：所述控制单元包括无线通讯模块，控制单元通过无线通讯模块与远程控制终端连接。The online monitoring system for the cooling performance of the quenching medium according to claim 1, wherein the control unit includes a wireless communication module, and the control unit is connected to a remote control terminal through the wireless communication module.
- 根据权利要求1所述的淬火介质冷却性能的在线监测***，其特征在于：所述控制单元还包括报警模块和显示模块。The online monitoring system for the cooling performance of the quenching medium according to claim 1, wherein the control unit further includes an alarm module and a display module.
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