WO2021093019A1 - Polyurethane reaction kettle temperature control system - Google Patents

Polyurethane reaction kettle temperature control system Download PDF

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Publication number
WO2021093019A1
WO2021093019A1 PCT/CN2019/120810 CN2019120810W WO2021093019A1 WO 2021093019 A1 WO2021093019 A1 WO 2021093019A1 CN 2019120810 W CN2019120810 W CN 2019120810W WO 2021093019 A1 WO2021093019 A1 WO 2021093019A1
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Prior art keywords
control system
transistor
temperature control
programmable controller
polyurethane
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PCT/CN2019/120810
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French (fr)
Chinese (zh)
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唐定凯
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清远市番亿聚氨酯有限公司
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Publication of WO2021093019A1 publication Critical patent/WO2021093019A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B01J19/0013—Controlling the temperature of the process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00054—Controlling or regulating the heat exchange system
    • B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2219/00058—Temperature measurement

Definitions

  • the invention relates to the technical field of polyurethane production, in particular to a temperature control system for a polyurethane reactor.
  • Polyurethane has different temperature requirements in different stages of the production process. It needs to be heated before the reaction, and a lot of heat will be released during the reaction.
  • the reaction temperature of the polyurethane needs to be controlled between 60-100 degrees. If the temperature is too high, Adverse reactions will occur, affecting the regularity of molecules, affecting product quality and production efficiency, so it is very important to control the temperature of the reactor reasonably.
  • the current reactor basically only has a heating device without a cooling device, which seriously affects the heat dissipation effect during the reaction process, and makes it difficult to control the reaction temperature.
  • the present invention provides a polyurethane reactor temperature control system, which will not affect the production and ensure the work progress.
  • a temperature control system for a polyurethane reactor includes a temperature sensor, an upper computer, a programmable controller, and a heating component and a cooling component connected in parallel on the reactor.
  • the temperature sensor, the programmable controller, and the The heating assembly and the cooling assembly are respectively connected with the upper computer.
  • the heater assembly and the cooling assembly are powered by a three-phase AC power supply, the three-phase line of the three-phase AC power is a delta connection, and the heating assembly and the cooling assembly are in two different phases of the three-phase line.
  • the control switch is connected with wires and is provided with the control switch connected to the programmable controller.
  • the heating assembly includes a heater and a relay electrically connected to the heater, and the relay is electrically connected to the temperature sensor.
  • the cooling component includes a circulating water pump and a water tank, and the water tank is electrically connected to the temperature sensor.
  • a driving circuit is included, and the driving circuit is electrically connected to the programmable controller, the heating component, and the cooling component, respectively.
  • the drive circuit includes a DC power supply VCC, transistors VT1, VT2, VT3, resistors R1, R2, a diode D1, capacitors C1, C2; the collector of the transistor VT1 is connected to the DC power supply VCC, and the base of the transistor VT1 is connected to the resistor One end of R2 is connected, the other end of resistor R2 is connected to DC power supply VCC, the base of transistor VT1 is connected to the anode of diode D1, the emitter of transistor VT1 is connected to the cathode of diode D1, one end of resistor R1, the base and emitter of transistor VT3, and the collector of transistor VT2 The other end of the resistor R1 is connected to the base of the transistor VT2 and one end of the capacitor C1; the other end of the capacitor C1 is connected to the emitter of the transistor VT2 and grounded; one end of the capacitor C2 is connected to the emitter of the transistor VT1 and VT3, and the other end of the capacitor
  • the adopted wireless modulation mode includes 2.4G wireless transmission, Bluetooth and WiFi.
  • the programmable controller is a PLC or a single-chip microcomputer.
  • an alarm module is included, and the alarm module is connected to the programmable controller.
  • the temperature control system for a polyurethane reactor has the beneficial effect that: by providing a cooling component and a heating component, and electrically connecting them with a temperature sensor, the temperature sensor measures the temperature inside the reactor in real time. Feedback, and control cooling components or heating components to work as needed to ensure that the temperature of the reactor is always maintained at the required temperature, ensuring product quality and production efficiency.
  • the invention has simple operation, good use effect, and is easy to popularize and use.
  • Fig. 1 is a structural block diagram of the temperature control system of the polyurethane reactor of the present invention.
  • Figure 2 is a schematic diagram of the connection of the thermal component and the cooling component of the polyurethane reactor temperature control system of the present invention.
  • Figure 3 is a schematic diagram of the driving circuit of the polyurethane reactor temperature control system of the present invention.
  • a polyurethane reactor temperature control system of this embodiment includes a temperature sensor, an upper computer, a programmable controller, and a heating component and a cooling component connected in parallel on the reactor.
  • the temperature sensor, the programmable controller, the heating assembly, and the cooling assembly are respectively connected with the host computer.
  • the polyurethane reactor temperature control system based on the above technical features, by setting a cooling component and a heating component, and electrically connected to the temperature sensor, the temperature sensor feedbacks the temperature inside the reactor in real time, and controls the cooling component or the heating component as needed. Work to ensure that the temperature of the reactor is always maintained at the required temperature, ensuring product quality and production efficiency.
  • the invention has simple operation, good use effect, and is easy to popularize and use.
  • the programmable controller is the control core of the control system, completing all the sequence, interlocking, protection, and process control.
  • the programmable controller receives and calculates the operating signal and set value of the upper computer, and transmits the received monitoring value to the upper computer for display in real time.
  • the host computer communicates with the programmable controller in real time to monitor, record and display the operating status and operating parameters of the heating equipment.
  • the programmable controller is a PLC or a single-chip microcomputer.
  • the wireless connection between the host computer and the programmable controller adopts wireless modulation modes including 2.4G wireless transmission, Bluetooth and WiFi. It adopts a variety of modulation methods, which can be used according to the actual situation, which greatly increases the practical range.
  • the heater assembly and the cooling assembly are powered by a three-phase AC power supply, the three-phase line of the three-phase AC power is a delta connection, and the heating assembly and the cooling assembly are different from each other in the three-phase line.
  • the two-phase wires are connected and provided with a control switch, and the control switch is connected to the programmable controller.
  • the heating assembly includes a heater and a relay electrically connected to the heater, and the relay is electrically connected to the temperature sensor, so that the relay can be individually controlled in real time, so as to control all of the relays as required.
  • the work of the heater ensures that the heater can be started and stopped accurately.
  • the cooling component includes a circulating water pump and a water tank, and the water tank is electrically connected with the temperature sensor. Specifically, it also includes a temperature regulating pipe wound on the reactor, which is connected to the circulating water pump and the water tank to form a circulating water path. When the temperature needs to be lowered, the circulating water pump pumps the water in the age water tank to achieve The heat exchange of the reaction kettle achieves cooling.
  • a driving circuit is included, and the driving circuit is electrically connected with the programmable controller, the heating component, and the cooling component, respectively.
  • the drive circuit includes a DC power supply VCC, transistors VT1, VT2, VT3, resistors R1, R2, a diode D1, capacitors C1, C2; the collector of the transistor VT1 is connected to the DC power supply VCC, and the base of the transistor VT1 is connected to the resistor One end of R2 is connected, the other end of resistor R2 is connected to DC power supply VCC, the base of transistor VT1 is connected to the anode of diode D1, the emitter of transistor VT1 is connected to the cathode of diode D1, one end of resistor R1, the base and emitter of transistor VT3, and the collector of transistor VT2 The other end of the resistor R1 is connected to the base of the transistor VT2 and one end of the capacitor C1; the other end of the capacitor C1 is connected to the emitter of the transistor
  • the transistors VT1 and VT2 are NPN transistors, and the transistor VT3 is a PNP transistor.
  • Diode D1 is a fast recovery diode.
  • the drive circuit adopts a complementary symmetrical circuit, has an output capacitor, is powered by a single power supply, and the circuit is light and reliable.
  • the polyurethane reactor temperature control system further includes an alarm module.
  • the alarm module can be an alarm or a flashing light.
  • the alarm module is connected to the programmable controller, which increases the safety of the system.

Abstract

A polyurethane reaction kettle temperature control system, comprising a temperature sensor, an upper computer, and a programmable controller which are disposed on a reaction kettle, as well as a heating component and a cooling component which are connected in parallel. The temperature sensor, the programmable controller, the heating component, and the cooling component are separately connected to the upper computer. According to the polyurethane reaction kettle temperature control system, the cooling component and the heating component are disposed and electrically connected to the temperature sensor, separately, the temperature sensor feeds back the temperature in the reaction kettle in real time, and the cooling component or the heating component is controlled to work according to requirements, so that the temperature of the reaction kettle is always maintained at a required temperature, and the product quality and the production efficiency are ensured; moreover, the operation is simple, the use effect is good, and it is easy for popularization and use.

Description

一种聚氨酯反应釜温度控制系统Temperature control system for polyurethane reaction kettle 技术领域Technical field
本发明涉及聚氨酯生产技术领域，特别是涉及一种聚氨酯反应釜温度控制系统。The invention relates to the technical field of polyurethane production, in particular to a temperature control system for a polyurethane reactor.
背景技术Background technique
聚氨酯在生产过程中不同阶段对温度的要求不同，在反应之前需要加热、在反应过程中会释放大量的热，而聚氨酯的反应温度又需要控制在60-100度之间，若温度过高则会出现不良反应，影响分子间的规则性，影响产品的质量及生产效率，所以合理控制反应釜的温度就显得非常重要。而目前的反应釜基本只有加热装置，不具有降温装置，严重影响反应过程中的散热效果，导致反应温度较难控制。Polyurethane has different temperature requirements in different stages of the production process. It needs to be heated before the reaction, and a lot of heat will be released during the reaction. The reaction temperature of the polyurethane needs to be controlled between 60-100 degrees. If the temperature is too high, Adverse reactions will occur, affecting the regularity of molecules, affecting product quality and production efficiency, so it is very important to control the temperature of the reactor reasonably. However, the current reactor basically only has a heating device without a cooling device, which seriously affects the heat dissipation effect during the reaction process, and makes it difficult to control the reaction temperature.
发明内容Summary of the invention
为克服现有技术的不足，本发明提供一种聚氨酯反应釜温度控制系统，不会影响生产，保证工作进度。In order to overcome the shortcomings of the prior art, the present invention provides a polyurethane reactor temperature control system, which will not affect the production and ensure the work progress.
本发明解决其技术问题所采用的技术方案是：The technical solutions adopted by the present invention to solve its technical problems are:
一种聚氨酯反应釜温度控制系统，包括设置在反应釜上的温度传感器、上位机、可编程控制器和相并联连接的加热组件和降温组件，所述温度传感器、所述可编程控制器、所述加热组件和所述降温组件分别与所述上位机连接。A temperature control system for a polyurethane reactor includes a temperature sensor, an upper computer, a programmable controller, and a heating component and a cooling component connected in parallel on the reactor. The temperature sensor, the programmable controller, and the The heating assembly and the cooling assembly are respectively connected with the upper computer.
优选地，所述加热器组件和所述降温组件通过三相交流电源供电，三相交流电的三相线为三角形接线，所述加热组件和所述降温组件分别于三相线中不同的两相线连接并设置控制开关，所述控制开关连接所述可编程控制器。Preferably, the heater assembly and the cooling assembly are powered by a three-phase AC power supply, the three-phase line of the three-phase AC power is a delta connection, and the heating assembly and the cooling assembly are in two different phases of the three-phase line. The control switch is connected with wires and is provided with the control switch connected to the programmable controller.
优选地，所述加热组件包括加热器和与所述加热器电连接的继电器，所述继电器与所述温度传感器电连接。Preferably, the heating assembly includes a heater and a relay electrically connected to the heater, and the relay is electrically connected to the temperature sensor.
优选地，所述降温组件包括循环水泵和水箱，所述水箱与所述温度传感器电连接。Preferably, the cooling component includes a circulating water pump and a water tank, and the water tank is electrically connected to the temperature sensor.
优选地，包括驱动电路，所述驱动电路分别与所述可编程控制器、所述加热组件和所述降温组件电连接。Preferably, a driving circuit is included, and the driving circuit is electrically connected to the programmable controller, the heating component, and the cooling component, respectively.
优选地，所述驱动电路包括直流电源VCC，晶体管VT1、VT2、VT3，电阻R1、R2，二极管D1，电容C1、C2；晶体管VT1的集电极与直流电源VCC相连，晶体管VT1的基极与电阻R2一端相连，电阻R2另一端与直流电源VCC相连，晶体管VT1的基极与二极管D1阳极相连，晶体管VT1发射极与二极管D1阴极、电阻R1一端、晶体管VT3的基极、发射极、晶体管VT2集电极相连；电阻R1另一端与晶体管VT2的基极、电容C1一端相连；电容C1另一端与晶体管VT2的发射极相连并接地；电容C2一端与晶体管VT1发射极、VT3发射极相连，电容C2另一端与晶体管VT3集电极相连并接地。Preferably, the drive circuit includes a DC power supply VCC, transistors VT1, VT2, VT3, resistors R1, R2, a diode D1, capacitors C1, C2; the collector of the transistor VT1 is connected to the DC power supply VCC, and the base of the transistor VT1 is connected to the resistor One end of R2 is connected, the other end of resistor R2 is connected to DC power supply VCC, the base of transistor VT1 is connected to the anode of diode D1, the emitter of transistor VT1 is connected to the cathode of diode D1, one end of resistor R1, the base and emitter of transistor VT3, and the collector of transistor VT2 The other end of the resistor R1 is connected to the base of the transistor VT2 and one end of the capacitor C1; the other end of the capacitor C1 is connected to the emitter of the transistor VT2 and grounded; one end of the capacitor C2 is connected to the emitter of the transistor VT1 and VT3, and the other end of the capacitor C2 One end is connected to the collector of the transistor VT3 and grounded.
优选地，所述上位机与所述可编程控制器之间无线连接，采用的无线调制方式包括2.4G无线传输、蓝牙和WiFi。Preferably, for the wireless connection between the host computer and the programmable controller, the adopted wireless modulation mode includes 2.4G wireless transmission, Bluetooth and WiFi.
优选地，所述可编程控制器为PLC或单片机。Preferably, the programmable controller is a PLC or a single-chip microcomputer.
优选地，包括报警模块，所述报警模块与所述可编程控制器连接。Preferably, an alarm module is included, and the alarm module is connected to the programmable controller.
本发明实施例一种聚氨酯反应釜温度控制系统与现有技术相比，其有益效果在于：通过设置降温组件及加热组件，并分别与温度传感器电连接，温度传感器实时对反应釜里面的温度进行反馈，并根据需要控制降温组件或加热组件进行工作，确保反应釜的温度始终维持在需要的温度，确保了产品的质量及生产效率。本发明操作简单，使用效果好，易于推广使用。Compared with the prior art, the temperature control system for a polyurethane reactor according to the embodiment of the present invention has the beneficial effect that: by providing a cooling component and a heating component, and electrically connecting them with a temperature sensor, the temperature sensor measures the temperature inside the reactor in real time. Feedback, and control cooling components or heating components to work as needed to ensure that the temperature of the reactor is always maintained at the required temperature, ensuring product quality and production efficiency. The invention has simple operation, good use effect, and is easy to popularize and use.
附图说明Description of the drawings
图1为本发明的聚氨酯反应釜温度控制系统的结构框图。Fig. 1 is a structural block diagram of the temperature control system of the polyurethane reactor of the present invention.
图2为本发明的聚氨酯反应釜温度控制系统的热组件与降温组件的连接示意图。Figure 2 is a schematic diagram of the connection of the thermal component and the cooling component of the polyurethane reactor temperature control system of the present invention.
图3为本发明的聚氨酯反应釜温度控制系统的驱动电路的原理图。Figure 3 is a schematic diagram of the driving circuit of the polyurethane reactor temperature control system of the present invention.
具体实施方式Detailed ways
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The specific implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
请参阅附图1-3，本实施例的一种聚氨酯反应釜温度控制系统，包括设置在反应釜上的温度传感器、上位机、可编程控制器和相并联连接的加热组件和降温组件，所述温度传感器、所述可编程控制器、所述加热组件和所述降温组件分别与所述上位机连接。Please refer to Figures 1-3, a polyurethane reactor temperature control system of this embodiment includes a temperature sensor, an upper computer, a programmable controller, and a heating component and a cooling component connected in parallel on the reactor. The temperature sensor, the programmable controller, the heating assembly, and the cooling assembly are respectively connected with the host computer.
基于上述技术特征的聚氨酯反应釜温度控制系统，通过设置降温组件及加热组件，并分别与温度传感器电连接，温度传感器实时对反应釜里面的温度进行反馈，并根据需要控制降温组件或加热组件进行工作，确保反应釜的温度始终维持在需要的温度，确保了产品的质量及生产效率。本发明操作简单，使用效果好，易于推广使用。The polyurethane reactor temperature control system based on the above technical features, by setting a cooling component and a heating component, and electrically connected to the temperature sensor, the temperature sensor feedbacks the temperature inside the reactor in real time, and controls the cooling component or the heating component as needed. Work to ensure that the temperature of the reactor is always maintained at the required temperature, ensuring product quality and production efficiency. The invention has simple operation, good use effect, and is easy to popularize and use.
本实施例中，所述可编程控制器是控制系统的控制核心，完成所有的顺序、联锁、保护和工艺流程控制。可编程控制器接收所述上位机的操作信号和设定值并进行计算，并将接收到的监测值实时传送到所述上位机进行显示。所述上位机与所述可编程控制器实时通讯，监测、记录和显示加热设备的运行状态和运行参数。在本实施例中，所述可编程控制器为PLC或单片机。所述上位机与所述可编程控制器之间无线连接，采用的无线调制方式包括2.4G无线传输、蓝牙和WiFi。采用多种调制方式，使用时可以根据实际采用，大大增加了实用范围。In this embodiment, the programmable controller is the control core of the control system, completing all the sequence, interlocking, protection, and process control. The programmable controller receives and calculates the operating signal and set value of the upper computer, and transmits the received monitoring value to the upper computer for display in real time. The host computer communicates with the programmable controller in real time to monitor, record and display the operating status and operating parameters of the heating equipment. In this embodiment, the programmable controller is a PLC or a single-chip microcomputer. The wireless connection between the host computer and the programmable controller adopts wireless modulation modes including 2.4G wireless transmission, Bluetooth and WiFi. It adopts a variety of modulation methods, which can be used according to the actual situation, which greatly increases the practical range.
本实施例中，所述加热器组件和所述降温组件通过三相交流电源供电，三相交流电的三相线为三角形接线，所述加热组件和所述降温组件分别于三相线中不同的两相线连接并设置控制开关，所述控制开 关连接所述可编程控制器。In this embodiment, the heater assembly and the cooling assembly are powered by a three-phase AC power supply, the three-phase line of the three-phase AC power is a delta connection, and the heating assembly and the cooling assembly are different from each other in the three-phase line. The two-phase wires are connected and provided with a control switch, and the control switch is connected to the programmable controller.
本实施例中，所述加热组件包括加热器和与所述加热器电连接的继电器，所述继电器与所述温度传感器电连接，从而可以实时对所述继电器的单独控制，从而根据需要控制所述加热器的工作，确保所述加热器能准确启停。所述降温组件包括循环水泵和水箱，所述水箱与所述温度传感器电连接。具体地，还包括缠绕在反应釜上的调温管，调温管与所述循环水泵及所述水箱连成循环水路，当需要降温时所述循环水泵将岁数水箱内的水泵动，实现对反应釜的热交换，达到降温。In this embodiment, the heating assembly includes a heater and a relay electrically connected to the heater, and the relay is electrically connected to the temperature sensor, so that the relay can be individually controlled in real time, so as to control all of the relays as required. The work of the heater ensures that the heater can be started and stopped accurately. The cooling component includes a circulating water pump and a water tank, and the water tank is electrically connected with the temperature sensor. Specifically, it also includes a temperature regulating pipe wound on the reactor, which is connected to the circulating water pump and the water tank to form a circulating water path. When the temperature needs to be lowered, the circulating water pump pumps the water in the age water tank to achieve The heat exchange of the reaction kettle achieves cooling.
本实施例中，包括驱动电路，所述驱动电路分别与所述可编程控制器、所述加热组件和所述降温组件电连接。具体地，所述驱动电路包括直流电源VCC，晶体管VT1、VT2、VT3，电阻R1、R2，二极管D1，电容C1、C2；晶体管VT1的集电极与直流电源VCC相连，晶体管VT1的基极与电阻R2一端相连，电阻R2另一端与直流电源VCC相连，晶体管VT1的基极与二极管D1阳极相连，晶体管VT1发射极与二极管D1阴极、电阻R1一端、晶体管VT3的基极、发射极、晶体管VT2集电极相连；电阻R1另一端与晶体管VT2的基极、电容C1一端相连；电容C1另一端与晶体管VT2的发射极相连并接地；电容C2一端与晶体管VT1发射极、VT3发射极相连，电容C2另一端与晶体管VT3集电极相连并接地。较佳地，晶体管VT1、VT2为NPN型三极管，晶体管VT3为PNP型三极管。二极管D1为快恢复二极管。驱动电路采用互补对称电路，有输出电容，单电源供电，电路轻便可靠。In this embodiment, a driving circuit is included, and the driving circuit is electrically connected with the programmable controller, the heating component, and the cooling component, respectively. Specifically, the drive circuit includes a DC power supply VCC, transistors VT1, VT2, VT3, resistors R1, R2, a diode D1, capacitors C1, C2; the collector of the transistor VT1 is connected to the DC power supply VCC, and the base of the transistor VT1 is connected to the resistor One end of R2 is connected, the other end of resistor R2 is connected to DC power supply VCC, the base of transistor VT1 is connected to the anode of diode D1, the emitter of transistor VT1 is connected to the cathode of diode D1, one end of resistor R1, the base and emitter of transistor VT3, and the collector of transistor VT2 The other end of the resistor R1 is connected to the base of the transistor VT2 and one end of the capacitor C1; the other end of the capacitor C1 is connected to the emitter of the transistor VT2 and grounded; one end of the capacitor C2 is connected to the emitter of the transistor VT1 and VT3, and the other end of the capacitor C2 One end is connected to the collector of the transistor VT3 and grounded. Preferably, the transistors VT1 and VT2 are NPN transistors, and the transistor VT3 is a PNP transistor. Diode D1 is a fast recovery diode. The drive circuit adopts a complementary symmetrical circuit, has an output capacitor, is powered by a single power supply, and the circuit is light and reliable.
本实施例中，所述聚氨酯反应釜温度控制系统还包括报警模块，所述报警器模块可以选用报警器或闪光灯，所述报警模块与所述可编程控制器连接，增加了系统的安全。In this embodiment, the polyurethane reactor temperature control system further includes an alarm module. The alarm module can be an alarm or a flashing light. The alarm module is connected to the programmable controller, which increases the safety of the system.
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以 做出若干改进和替换，这些改进和替换也应视为本发明的保护范围。The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present invention, several improvements and substitutions can be made. These improvements and substitutions It should also be regarded as the protection scope of the present invention.

Claims (9)

  1. 一种聚氨酯反应釜温度控制系统，其特征在于：包括设置在反应釜上的温度传感器、上位机、可编程控制器和相并联连接的加热组件和降温组件，所述温度传感器、所述可编程控制器、所述加热组件和所述降温组件分别与所述上位机连接。A temperature control system for a polyurethane reactor, which is characterized in that it comprises a temperature sensor, an upper computer, a programmable controller, and a heating component and a cooling component connected in parallel on the reactor. The temperature sensor and the programmable controller The controller, the heating assembly and the cooling assembly are respectively connected with the upper computer.
  2. 如权利要求1所述的聚氨酯反应釜温度控制系统，其特征在于：所述加热器组件和所述降温组件通过三相交流电源供电，三相交流电的三相线为三角形接线，所述加热组件和所述降温组件分别于三相线中不同的两相线连接并设置控制开关，所述控制开关连接所述可编程控制器。The polyurethane reactor temperature control system according to claim 1, wherein the heater assembly and the cooling assembly are powered by a three-phase AC power supply, the three-phase line of the three-phase AC power is delta connection, and the heating assembly And the cooling component are respectively connected to different two-phase lines among the three-phase lines and provided with a control switch, and the control switch is connected to the programmable controller.
  3. 如权利要求1所述的聚氨酯反应釜温度控制系统，其特征在于：所述加热组件包括加热器和与所述加热器电连接的继电器，所述继电器与所述温度传感器电连接。The polyurethane reactor temperature control system according to claim 1, wherein the heating component comprises a heater and a relay electrically connected to the heater, and the relay is electrically connected to the temperature sensor.
  4. 如权利要求1所述的聚氨酯反应釜温度控制系统，其特征在于：所述降温组件包括循环水泵和水箱，所述水箱与所述温度传感器电连接。The polyurethane reactor temperature control system according to claim 1, wherein the cooling component comprises a circulating water pump and a water tank, and the water tank is electrically connected with the temperature sensor.
  5. 如权利要求1所述的聚氨酯反应釜温度控制系统，其特征在于：包括驱动电路，所述驱动电路分别与所述可编程控制器、所述加热组件和所述降温组件电连接。3. The polyurethane reactor temperature control system according to claim 1, characterized in that it comprises a driving circuit, and the driving circuit is electrically connected with the programmable controller, the heating component and the cooling component, respectively.
  6. 如权利要求5所述的聚氨酯反应釜温度控制系统，其特征在于：所述驱动电路包括直流电源VCC，晶体管VT1、VT2、VT3，电阻R1、R2，二极管D1，电容C1、C2；晶体管VT1的集电极与直流电源VCC相连，晶体管VT1的基极与电阻R2一端相连，电阻R2另一端与直流电源VCC相连，晶体管VT1的基极与二极管D1阳极相连，晶体管VT1发射极与二极管D1阴极、电阻R1一端、晶体管VT3的基极、发射极、晶体管VT2集电极相连；电阻R1另一端与晶体管VT2的基极、电容C1一端相连；电容C1另一端与晶体管VT2的发射极相连并接地；电容C2 一端与晶体管VT1发射极、VT3发射极相连，电容C2另一端与晶体管VT3集电极相连并接地。The polyurethane reactor temperature control system according to claim 5, wherein the driving circuit includes a DC power supply VCC, transistors VT1, VT2, VT3, resistors R1, R2, diode D1, capacitors C1, C2; The collector is connected to the DC power source VCC, the base of the transistor VT1 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the DC power source VCC, the base of the transistor VT1 is connected to the anode of the diode D1, the emitter of the transistor VT1 is connected to the cathode of the diode D1, and the resistor One end of R1, the base and emitter of transistor VT3, and the collector of transistor VT2 are connected; the other end of resistor R1 is connected to the base of transistor VT2 and one end of capacitor C1; the other end of capacitor C1 is connected to the emitter of transistor VT2 and is grounded; capacitor C2 One end is connected to the emitter of the transistor VT1 and VT3, and the other end of the capacitor C2 is connected to the collector of the transistor VT3 and grounded.
  7. 如权利要求1所述的聚氨酯反应釜温度控制系统，其特征在于：所述上位机与所述可编程控制器之间无线连接，采用的无线调制方式包括2.4G无线传输、蓝牙和WiFi。The polyurethane reactor temperature control system according to claim 1, characterized in that the wireless connection between the host computer and the programmable controller adopts wireless modulation methods including 2.4G wireless transmission, Bluetooth and WiFi.
  8. 如权利要求1所述的聚氨酯反应釜温度控制系统，其特征在于：所述可编程控制器为PLC或单片机。The polyurethane reactor temperature control system according to claim 1, wherein the programmable controller is a PLC or a single-chip microcomputer.
  9. 如权利要求1所述的聚氨酯反应釜温度控制系统，其特征在于：包括报警模块，所述报警模块与所述可编程控制器连接。The polyurethane reactor temperature control system according to claim 1, characterized in that it comprises an alarm module, and the alarm module is connected to the programmable controller.
PCT/CN2019/120810 2019-11-14 2019-11-26 Polyurethane reaction kettle temperature control system WO2021093019A1 (en)

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