WO2013131269A1 - 细菌、真菌培养室恒温控制系统 - Google Patents

细菌、真菌培养室恒温控制系统 Download PDF

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Publication number
WO2013131269A1
WO2013131269A1 PCT/CN2012/072104 CN2012072104W WO2013131269A1 WO 2013131269 A1 WO2013131269 A1 WO 2013131269A1 CN 2012072104 W CN2012072104 W CN 2012072104W WO 2013131269 A1 WO2013131269 A1 WO 2013131269A1
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Prior art keywords
control
chiller
relay
plc controller
normally open
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PCT/CN2012/072104
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English (en)
French (fr)
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邓茂林
谭鸿波
朱仲强
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四川科伦药业股份有限公司
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Publication of WO2013131269A1 publication Critical patent/WO2013131269A1/zh

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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • C12M41/14Incubators; Climatic chambers

Definitions

  • the invention relates to a constant temperature control system for bacteria and fungus culture chambers.
  • the temperature of bacteria and fungi culture generally needs to be maintained at 30-35 °C.
  • the existing methods of separation and culture of bacteria and fungi are mostly manual methods. The general process is as follows: the sample is subjected to necessary pre-treatment, and then the inoculated device is used. The sample is streaked onto the culture dish and isolated and cultured to obtain colonies, and further identification of bacteria, fungi and drug sensitivity detection.
  • the culture chamber can be used for large-scale cultivation of biological bacteria and fungi, and it can ensure that the biological strains survive and grow under suitable conditions of temperature and humidity.
  • the control of the temperature of the culture chamber is the most important.
  • the commonly used bacterial culture chamber constant temperature control system has the following disadvantages: it can only be cultured for a culture temperature, such as a bacteria constant temperature culture chamber or a fungus constant temperature culture chamber, because the temperature requirements for the cultivation of the two strains are different.
  • the culture chamber can not be separately temperature-controlled according to the demand; the temperature of the culture chamber cannot be intelligently adjusted and displayed, the process of temperature adjustment is complicated and there is a certain operational risk, the temperature control accuracy is poor, the error is large, and the circulation fan is not normally opened or the system
  • the equipment fails the alarm protection cannot be made in time, and the isolation protection of the input and output ends of each device cannot be realized.
  • the interference between the devices is strong, and the manual operation process is easy to pollute the culture room, and the system consumes a large amount of electricity.
  • the power supply design is unreasonable.
  • the object of the present invention is to solve the deficiencies of the existing bacteria and fungus culture chambers, and provide a novel constant temperature control system for bacteria and fungi culture chambers, which overcomes the traditional culture chamber and can only culture the strains for one cultivation temperature, such as bacteria constant temperature.
  • the culture chamber or the fungus constant temperature culture chamber because the temperature requirements for the cultivation of the two strains are different, the culture chamber cannot be separately temperature-controlled according to the demand; the temperature of the culture chamber cannot be intelligently adjusted and displayed, and the temperature adjustment process is complicated and has certain operations.
  • a bacteria, fungus culture room constant temperature control system which includes a PLC control circuit, a chiller, two sets of circulating fans, two sets of electric heaters, a display screen and a control touch screen, a group
  • the chiller, circulating fan and electric heater are placed in the bacteria culture room, and the other group is placed in the fungus culture room.
  • the display screen and the control touch screen are respectively connected to the PLC control circuit through the bus, and the positions of the chiller and the electric heater are respectively set.
  • the output of each sensor is connected with the input of the PLC control circuit through the analog input module;
  • the PLC control circuit includes the power supply control circuit, the circulating fan temperature control circuit, the chiller temperature control circuit, the alarm protection circuit and the input and output protection isolation circuit.
  • the power supply control circuit includes a power control PLC controller, power detection relays J9, J10, two sets of fixed relays SSR1, SSR2, two sets of electric heaters, a proportional valve, a control system power supply, an auxiliary power supply, and two sets of proportional valves.
  • Control relay J2, J3 and J5, J6, control system power supply and auxiliary power supply in parallel After serial connection to the three-phase output power supply T of the power control PLC controller, the three-phase output power supply T, S, R of the power control PLC controller respectively through the selection switch and three pairs of normally open contacts in the contactors KM1, KM2 Connected, the control terminals of the three pairs of normally open contacts in the contactors KM1 and KM2 are respectively connected with a fixed relay SSR1 and SSR2, and one electric heater is connected in series to each of the fixed relays SSR1 and SSR2, and three electric heaters are arranged in each group.
  • the other end is connected in parallel, and an external line is connected to any line between the selection switch and the three pairs of normally open contacts in the KM1 and KM2.
  • the external line is connected with the power detection relays J9 and J10, and the proportional valve control relay J2
  • the control terminals of the normally open contacts in J5 and the normally open contacts of proportional valve control relays J3 and J6 are respectively connected in series at the two output ends of the proportional valve.
  • the proportional valve controls the other ends of the normally open contacts in relays J2 and J3.
  • Parallel, the proportional valve control relay J5 is connected in parallel with the other end of the normally open contact in J6.
  • the proportional valve control relay J2 and J3 are connected in parallel and connected in series with the proportional valve, and connected to the power detection relay J9.
  • the proportional valve control relay J5 and J6 are connected in parallel. After The valve is connected in series and connected to the power detecting relay J10.
  • the circulating fan temperature control circuit includes a fan temperature PLC controller, an inlet air temperature detecting table and a return air temperature detecting table, and the inlet fan of the circulating fan is connected in series.
  • the chiller temperature control circuit comprises a chiller temperature PLC controller and a chiller temperature detecting table, and the output end of the chiller is connected in series with the chiller temperature detecting table and connected to the chiller temperature input port of the chiller temperature PLC controller.
  • the alarm protection circuit includes an alarm protection PLC controller, an alarm control relay J1, an electric heater control relay J4, J7, a chiller start/stop control relay J8, and two sets of proportional valve control relays J2, J3 and J5, J6,
  • the control end of the alarm control relay J1 is connected to the circulating fan output port of the alarm protection PLC controller, and at least two are provided in the alarm control relay J1.
  • normally open contact a pair of normally open contacts are connected in series with the buzzer and connected to the power indicator light, and the other pair of normally open contacts are connected to the alarm remote transmission circuit; the electric heater controls the relays J4, J7
  • the control terminal is respectively connected with the electric heater power output port of the alarm protection PLC controller, and the alarm protection PLC controller is connected with the electric heater through the electric heater control relay J4, J7 normally open contact and the contact electric device KM1, KM2 in series.
  • the control end of the chiller start/stop control relay J8 is connected with the chiller start/stop output port of the alarm protection PLC controller, and the alarm protection PLC controller is connected to the chiller through the normally open contact of the chiller start/stop control relay J8;
  • the control terminals of the valve control relays J2, J3, J5, and J6 are respectively connected to the ball valve output ports of the alarm protection PLC controller, and the normally open contacts of the proportional valve control relays J2, J3, J5, and J6 are respectively input with the proportional valves.
  • the input and output protection isolation circuit includes protection isolation PLC controller, electric heater control relay J4, J7, fan overload control relay J14, J15, chiller start and stop control J8, chiller overpressure control relay J11, chiller overload control relay J12, chiller water shortage control relay J13, alarm control relay J1 and power detection relay J9, J10, and two sets of proportional valve control relays J2, J3 and J5 , J6, the power supply power circuit is connected in series with the power indicator light, the power supply is also connected with the control end of the power detection relay J9, J10, and through the power detection relay J9, J10 in the normally open contact and the protection isolation PLC controller
  • the electric heater lacks the electric input port connection, and the circulating fan output port on the protection and isolation PLC controller is connected with the control end of the alarm control relay J1, and the alarm control relay J1 has at least two pairs of normally open contacts, wherein a pair of The open contact is connected in series with the buzzer and connected to the power indicator.
  • the other pair of normally open contacts are connected to the alarm remote transmission circuit.
  • the two sets of ball valve output ports on the protection and isolation PLC controller are respectively proportional to the proportional valve control relay J2.
  • the control terminals of J3 and J5, J6 are connected, and the normally open contacts in the proportional valve control relays J2, J3 and J5, J6 are respectively connected with the two input ends of the proportional valve, and the protection is separated.
  • the electric heater power output port on the PLC controller is connected to the control terminals of the electric heater control relays J4 and J7, and is connected in series with the contactors KM1 and KM2 through the electric heater control relays J4 and J7.
  • the electric heater is connected, and the electric heater proportional output port on the protection and isolation PLC controller is connected with the fixed relays SSR1 and SSR2 to protect the chiller start/stop output port on the PLC controller and the control end of the chiller start/stop control relay J8.
  • the output of the circulating fan is connected with the control end of the fan overload control relay J14, J15, and through the fan overload control relay J14, J15
  • the normally closed contact is connected with the fan overload input port on the protection isolation PLC controller, and the output end of the chiller is respectively connected with the chiller overpressure control relay J11, the chiller overload control relay J12 and the chiller water shortage control relay J13.
  • chiller overpressure control relay J11 Connected and passed the chiller overpressure control relay J11, chiller overload control relay J12 and chiller water shortage control relay
  • the normally open contact in J13 is connected to the chiller overpressure on the protection isolated PLC controller, the chiller overload and the chiller water shortage input port.
  • the beneficial effects of the invention are: (1) Control the chiller, fan and electric heater separately through the PLC control circuit, only need to adjust the input value on the control touch screen, then the temperature adjustment and control of the bacteria culture room and the fungus culture room can be realized separately, and the operation is simple Convenient, safe, clean, and not easy to contaminate the culture room; (2) Measuring the actual temperature of the chiller and the electric heater through the sensor and feeding back to the staff through the display screen, so that the staff can further fine-tune the temperature as needed; (3) Control and protect the power supply to ensure the normal power supply of the system.
  • the auxiliary power supply ensures that the system can still work normally when the system is powered off.
  • the system can also use the three-phase power supply of the PLC to protect against leakage and ensure the personal safety of the staff.
  • the equipment fails or the circulating fan is not turned on, the system automatically alarms, so that it can be processed in time, and the alarm information can be transmitted remotely.
  • the management personnel can remotely control the situation of the bacteria culture room, which is convenient for the management personnel to remotely Modify or set the parameters of the training room so that the management personnel can know the alarm information in the training room in time and make corresponding treatment in time; (5) Isolation protection on the input and output terminals to eliminate interference between various devices.
  • Figure 1 is a schematic structural view of the present invention
  • FIG. 2 is a schematic structural view of a power supply control circuit of the present invention
  • FIG. 3 is a schematic structural view of a circulating fan temperature control circuit, a chiller temperature control circuit, and an alarm protection circuit according to the present invention
  • FIG. 4 is a schematic structural view of an input/output protection isolation circuit of the present invention.
  • FIG. 1 a constant temperature control system for a bacteria and fungus culture room, which includes a PLC control circuit, a chiller, two sets of circulating fans, two sets of electric heaters, a display screen, and Control the touch screen, a group of chillers, circulation fans and electric heaters are placed in the bacteria culture room, the other group is placed in the fungus culture room, the display screen and the control touch screen are respectively connected to the PLC control circuit through the bus, the chiller and the electric heating
  • the positions of the sensors are respectively provided with sensors, and the output of each sensor is connected with the input of the PLC control circuit through an analog input module;
  • the PLC control circuit includes a power supply control circuit, a circulating fan temperature control circuit, a chiller temperature control circuit, an alarm protection circuit, and Input and output protection isolation circuit.
  • the power supply control circuit includes a power control PLC controller, power detection relays J9, J10, two sets of fixed relays SSR1, SSR2, two sets of electric heaters, a proportional valve, a control system power supply, and an auxiliary power supply.
  • An electric heater is connected in series to each of the fixed relays SSR1 and SSR2, and the other ends of each of the three electric heaters are connected in parallel, and the switch is connected to any line between the three pairs of normally open contacts in the contactors KM1 and KM2.
  • There is an external line connected the external line is connected with the power detection relays J9 and J10, and the control terminals of the normally open contacts in the proportional valve control relays J2 and J5 and the normally open contacts in the proportional valve control relays J3 and J6 are connected in series.
  • the proportional valve control relay J2 is connected in parallel with the other end of the normally open contact in J3, and the proportional valve control relay J5 is connected in parallel with the other end of the normally open contact in J6, and the proportional valve control relay J2, J3 After parallel connection, it is connected in series with the proportional valve, and is connected to the power detection relay J9.
  • the proportional valve control relays J5 and J6 are connected in parallel and connected in series with the proportional valve, and connected to the power detection relay J10;
  • the circulating fan temperature control circuit includes a fan temperature PLC controller, an inlet air temperature detecting table, and a return air temperature detecting table, and the inlet fan of the circulating fan is connected to the inlet air temperature detecting table and the fan.
  • the inlet air temperature input port on the temperature PLC controller is connected, and the return air output end of the circulation fan is connected in series with the return air temperature detection table and connected to the return air temperature input port on the fan temperature PLC controller;
  • the chiller temperature control The circuit comprises a chiller temperature PLC controller and a chiller temperature detecting table, and the output end of the chiller is connected in series with the chiller temperature detecting table and connected to the chiller temperature input port of the chiller temperature PLC controller;
  • the alarm protection circuit Including alarm protection PLC controller, alarm control relay J1, electric heater control relay J4, J7, chiller start/stop control relay J8 and two sets of proportional valve control relays J2, J3 and J5, J6, alarm control relay J1 control terminal Connected to the circulating fan output port of the alarm protection PLC controller, the alarm control relay J1 is provided with at least two pairs of normally open contacts, one of which is normally open It is connected in series with the buzzer AL and connected to the power indicator HL lamp.
  • the other pair of normally open contacts are connected to the alarm remote transmission circuit.
  • the control terminals of the electric heater control relays J4 and J7 are respectively connected to the alarm protection PLC controller.
  • the heater power output port is connected, and the alarm protection PLC controller controls the relays of the relays J4 and J7 through the electric heater to connect with the electric heaters in series with the contactors KM1 and KM2;
  • the control terminal of the chiller start/stop control relay J8 Connected to the chiller start/stop output port of the alarm protection PLC controller, the alarm protection PLC controller is connected to the chiller through the normally open contact of the chiller start/stop control relay J8;
  • the proportional valve control relay J2, J3, J5, J6 The control end is respectively connected with the ball valve output port of the alarm protection PLC controller, and the normally open contacts of the proportional valve control relays J2, J3, J5, J6 are respectively connected with the two input ends of the proportional valve;
  • the input and output protection isolation circuit comprises a protection isolation PLC controller, an electric heater control relay J4, J7, a fan overload control relay J14, J15, a chiller start/stop control relay J8, a chiller overpressure Control relay J11, chiller overload control relay J12, chiller water shortage control relay J13, alarm control relay J1 and power detection relay J9, J10, and two sets of proportional valve control relays J2, J3 and J5, J6, on the power supply circuit
  • the power supply indicator HL is connected in series, and the power supply is also connected to the control terminals of the power detection relays J9 and J10, and the electric heaters on the power supply detection relays J9 and J10 are powered off.
  • the input port is connected, and the circulating fan output port on the protection and isolation PLC controller is connected to the control end of the alarm control relay J1.
  • the alarm control relay J1 is provided with at least two pairs of normally open contacts, wherein a pair of normally open contacts and buzzer
  • the unit AL is connected in series and connected to the power indicator HL, and the other pair of normally open contacts are connected to the alarm remote transmission circuit to protect the two sets of ball valves on the isolated PLC controller.
  • the outlet ports are respectively connected to the control terminals of the proportional valve control relays J2, J3 and J5, J6, and the normally open contacts in the proportional valve control relays J2, J3 and J5, J6 are respectively connected with the two input ends of the proportional valve, and the protection is isolated.
  • the electric heater power output port on the PLC controller is connected to the control terminals of the electric heater control relays J4 and J7, and is connected in series with the contactors KM1 and KM2 through the electric heater control relays J4 and J7.
  • the electric heater is connected, and the electric heater proportional output port on the protection and isolation PLC controller is connected with the fixed relays SSR1 and SSR2 to protect the chiller start/stop output port on the PLC controller and the control end of the chiller start/stop control relay J8.
  • the output of the circulating fan is connected with the control end of the fan overload control relay J14, J15, and through the fan overload control relay J14, J15
  • the normally closed contact is connected with the fan overload input port on the protection isolation PLC controller, and the output end of the chiller is respectively connected with the chiller overpressure control relay J11 and the chiller.
  • the control terminal of the load control relay J12 and the chiller water shortage control relay J13 are connected, and respectively pass the normally open contact and protection in the chiller overpressure control relay J11, the chiller overload control relay J12 and the chiller water shortage control relay J13. Isolation of the chiller overpressure on the PLC controller, chiller overload and chiller water shortage input port connection.

Abstract

本发明公开了一种细菌、真菌培养室恒温控制系统,它包括PLC控制电路、冷水机、两组循环风机、两组电加热器、显示屏和控制触摸屏,显示屏和控制触摸屏分别通过总线与PLC控制电路连接,冷水机和电加热器的位置分别设有传感器,各传感器的输出通过模拟量输入模块与PLC控制电路的输入连接,PLC控制电路包括供电电源控制电路、循环风机温度控制电路、冷水机温度控制电路、报警保护电路和输入输出保护隔离电路。本发明具有结构简单,操作简单方便,不易污染培养室;对供电电源进行控制保护,确保系统正常供电;系统自动报警,便于及吋做出处理,并可将报警信息远传;对输入输出端进行隔离保护,消除各种设备之间的干扰等特点。

Description

细菌、真菌培养室恒温控制系统 技术领域
本发明涉及一种细菌、真菌培养室恒温控制系统。
背景技术
在医院临床和医学研究试验中,往往需要对含有多种细菌、真菌的生物样本进行细菌、真菌分离培养等操作。细菌、真菌培养的温度一般需要维持在30~35℃,现有的细菌、真菌分离培养方法多为手工方式,其大致过程为:将样本进行必要的前处理,再采用接种器将处理后的样本划线接种到培养皿上,进行分离培养,以便获得菌落,进一步做细菌、真菌的鉴定与药物敏感检测。
这种手工操作方法存在相当大的弊端,它具有以下缺点:
(1)由于操作人员直接接触带有一定传染性的样本,容易造成传染,对操作人员的身体健康构成严重威胁; (2)操作过程存在相当多的人为因素影响,从而影响分离培养的质量; (3)手工分离过程繁琐,前期处理耗费时间较多,工作量较大,且不利于样本的随到随作,从而导致延误了良好的培养时机,进而影响分离培养质量; (4)由于是人工手工分离培养,工作量较大,不便于实施批量化大规模的细菌培育。
基于以上不足,细菌、真菌培养室恒温控制系统应运而生,培养室可用于大规模的培育生物细菌、真菌,可保证维持生物菌种在适宜的温度、湿度等条件下存活生长,其中,以培养室温度的控制最为重要。
然而,目前常用的细菌培养室恒温控制系统存在以下不足:只能针对一种培育温度的菌种进行培养,比如细菌恒温培养室或真菌恒温培养室,因为两种菌种培育的温度要求不同,不能根据需求对培养室进行分开控温;无法智能调节和显示培养室温度,温度调节的过程较为复杂且存在一定的操作危险性,温度控制精度差、误差大,在循环风机没有正常开启或系统设备出现故障等情况下不能及时做出报警保护,无法实现对各设备输入输出端的隔离保护,设备之间的干扰较强,且人工操作的过程易使培养室受到污染,系统耗电量较大、电源设计不合理。
技术问题
本发明的目的在于解决现有细菌、真菌培养室的不足,提供一种新型的细菌、真菌培养室恒温控制系统,克服传统培养室只能针对一种培育温度的菌种进行培养,比如细菌恒温培养室或真菌恒温培养室,因为两种菌种培育的温度要求不同,不能根据需求对培养室进行分开控温;无法智能调节和显示培养室温度,温度调节的过程较为复杂且存在一定的操作危险性,温度控制精度差、误差大,在循环风机没有正常开启或系统设备出现故障等情况下不能及时做出报警保护,无法实现对各设备输入输出端的隔离保护,设备之间的干扰较强,以及人工操作的过程易使培养室受到污染,系统耗电量较大、电源设计不合理等缺点。
技术解决方案
本发明的目的是通过以下技术方案来实现的:细菌、真菌培养室恒温控制系统,它包括PLC控制电路、冷水机、两组循环风机、两组电加热器、显示屏和控制触摸屏,一组冷水机、循环风机和电加热器置于细菌培养室中,另一组置于真菌培养室中,显示屏和控制触摸屏分别通过总线与PLC控制电路连接,冷水机和电加热器的位置分别设有传感器,各传感器的输出通过模拟量输入模块与PLC控制电路的输入连接;PLC控制电路包括供电电源控制电路、循环风机温度控制电路、冷水机温度控制电路、报警保护电路和输入输出保护隔离电路;所述的供电电源控制电路包括电源控制PLC控制器,电源检测继电器J9、J10,两组固定继电器SSR1、SSR2,两组电加热器,比例阀、控制系统电源、辅助电源以及两组比例阀控制继电器J2、J3及J5、J6,控制系统电源与辅助电源并联后串接在电源控制PLC控制器的三相输出电源T上,电源控制PLC控制器的三相输出电源T、S、R通过选择开关分别与触电器KM1、KM2内的三对常开触点连接,触电器KM1、KM2内三对常开触点的控制端分别串接有一个固定继电器SSR1、SSR2,每个固定继电器SSR1、SSR2上串接一个电加热器,每组三个电加热器的另一端并联,选择开关与触电器KM1、KM2内的三对常开触点之间的任意一条线路上连有一条外接线路,外接线路与电源检测继电器J9、J10连接,比例阀控制继电器J2、J5内常开触点、比例阀控制继电器J3、J6内常开触点的控制端分别串接在比例阀的两个输出端,比例阀控制继电器J2与J3内常开触点的另一端并联,比例阀控制继电器J5与J6内常开触点的另一端并联,比例阀控制继电器J2、J3并联后与比例阀串联,并接在电源检测继电器J9上,比例阀控制继电器J5、J6并联后与比例阀串联,并接在电源检测继电器J10上;所述的循环风机温度控制电路包括风机温度PLC控制器、进风温度检测表和回风温度检测表,循环风机的进风输出端串接进风温度检测表后与风机温度PLC控制器上的进风温度输入端口连接,循环风机的回风输出端串接回风温度检测表后与风机温度PLC控制器上的回风温度输入端口连接;所述的冷水机温度控制电路包括冷水机温度PLC控制器和冷水机温度检测表,冷水机的输出端串接冷水机温度检测表后与冷水机温度PLC控制器上的冷水机温度输入端口连接;所述的报警保护电路包括报警保护PLC控制器,报警控制继电器J1,电加热器控制继电器J4、J7,冷水机启停控制继电器J8和两组比例阀控制继电器J2、J3与J5、J6,报警控制继电器J1的控制端与报警保护PLC控制器的循环风机输出端口连接,报警控制继电器J1内设有至少两对常开触点,其中一对常开触点与蜂鸣器串联后并接在电源指示灯上,另一对常开触点与报警远传电路连接;电加热器控制继电器J4、J7的控制端分别与报警保护PLC控制器的电加热器电源输出端口连接,报警保护PLC控制器通过电加热器控制继电器J4、J7的常开触点与触电器KM1、KM2串联后与电加热器连接;冷水机启停控制继电器J8的控制端与报警保护PLC控制器的冷水机启停机输出端口连接,报警保护PLC控制器通过冷水机启停控制继电器J8的常开触点与冷水机连接;比例阀控制继电器J2、J3、J5、J6的控制端分别与报警保护PLC控制器的球阀输出端口连接,比例阀控制继电器J2、J3、J5、J6的常开触点分别与比例阀的两个输入端连接;所述的输入输出保护隔离电路包括保护隔离PLC控制器,电加热器控制继电器J4、J7,风机过载控制继电器J14、J15,冷水机启停控制继电器J8,冷水机超压控制继电器J11,冷水机过载控制继电器J12,冷水机缺水控制继电器J13,报警控制继电器J1和电源检测继电器J9、J10,以及两组比例阀控制继电器J2、J3和J5、J6,供电电源回路上串接有电源指示灯,供电电源还与电源检测继电器J9、J10的控制端连接,并通过电源检测继电器J9、J10内的常开触点与保护隔离PLC控制器上的电加热器缺电输入端口连接,保护隔离PLC控制器上的循环风机输出端口与报警控制继电器J1的控制端相连,报警控制继电器J1内设至少两对常开触点,其中,一对常开触点与蜂鸣器串联后并接在电源指示灯上,另一对常开触点与报警远传电路连接,保护隔离PLC控制器上的两组球阀输出端口分别与比例阀控制继电器J2、J3及J5、J6的控制端相连,比例阀控制继电器J2、J3及J5、J6内的常开触点分别与比例阀的两个输入端相连,保护隔离PLC控制器上的电加热器电源输出端口与电加热器控制继电器J4、J7的控制端相连,并通过电加热器控制继电器J4、J7内的常开触点与触电器KM1、KM2串联后与电加热器连接,保护隔离PLC控制器上的电加热器比例输出端口与固定继电器SSR1、SSR2连接,保护隔离PLC控制器上的冷水机启停机输出端口与冷水机启停控制继电器J8的控制端相连,并通过冷水机启停控制继电器J8的常开触点与冷水机连接,循环风机的输出端与风机过载控制继电器J14、J15的控制端连接,并通过风机过载控制继电器J14、J15内的常闭触点与保护隔离PLC控制器上的风机过载输入端口连接,冷水机的输出端分别与冷水机超压控制继电器J11、冷水机过载控制继电器J12及冷水机缺水控制继电器J13的控制端连接,并分别通过冷水机超压控制继电器J11、冷水机过载控制继电器J12及冷水机缺水控制继电器J13内的常开触点与保护隔离PLC控制器上的冷水机超压、冷水机过载及冷水机缺水的输入端口连接。
有益效果
本发明的有益效果是: (1)通过PLC控制电路分别对冷水机组、风机和电加热器进行控制,只需要在控制触摸屏上调节输入值,就可以分别实现对细菌培养室和真菌培养室温度的调节和控制,操作简单方便、安全性高,且干净卫生、不易污染培养室; (2)通过传感器测量冷水机组和电加热器的实际温度并通过显示屏反馈给工作人员,方便工作人员根据需要对温度进行进一步微调; (3)对供电电源进行控制保护,确保系统正常供电,辅助电源确保系统断电时仍能正常工作,采用PLC三相供电,还能进行漏电保护,确保工作人员的人身安全; (4)当设备出现故障或循环风机未开启等情况时,系统自动报警,便于及时做出处理,并可将报警信息远传,管理人员可以远程控制细菌培养室的情况,便于管理人员及时远程修改或设置培养室内参数,便于管理人员及时得知培养室内的报警信息,及时做出相应处理; (5)对输入输出端进行隔离保护,消除各种设备之间的干扰。
附图说明
图1为本发明结构示意图;
图2为本发明供电电源控制电路结构示意图;
图3为本发明循环风机温度控制电路、冷水机温度控制电路及报警保护电路结构示意图;
图4为本发明输入输出保护隔离电路结构示意图。
本发明的实施方式
下面结合附图进一步描述本发明的技术方案:如图1所示,细菌、真菌培养室恒温控制系统,它包括PLC控制电路、冷水机、两组循环风机、两组电加热器、显示屏和控制触摸屏,一组冷水机、循环风机和电加热器置于细菌培养室中,另一组置于真菌培养室中,显示屏和控制触摸屏分别通过总线与PLC控制电路连接,冷水机和电加热器的位置分别设有传感器,各传感器的输出通过模拟量输入模块与PLC控制电路的输入连接;PLC控制电路包括供电电源控制电路、循环风机温度控制电路、冷水机温度控制电路、报警保护电路和输入输出保护隔离电路。
如图2所示,所述的供电电源控制电路包括电源控制PLC控制器,电源检测继电器J9、J10,两组固定继电器SSR1、SSR2,两组电加热器,比例阀、控制系统电源、辅助电源以及两组比例阀控制继电器J2、J3及J5、J6,控制系统电源与辅助电源并联后串接在电源控制PLC控制器的三相输出电源T上,电源控制PLC控制器的三相输出电源T、S、R通过选择开关分别与触电器KM1、KM2内的三对常开触点连接,触电器KM1、KM2内三对常开触点的控制端分别串接有一个固定继电器SSR1、SSR2,每个固定继电器SSR1、SSR2上串接一个电加热器,每组三个电加热器的另一端并联,选择开关与触电器KM1、KM2内的三对常开触点之间的任意一条线路上连有一条外接线路,外接线路与电源检测继电器J9、J10连接,比例阀控制继电器J2、J5内常开触点、比例阀控制继电器J3、J6内常开触点的控制端分别串接在比例阀的两个输出端,比例阀控制继电器J2与J3内常开触点的另一端并联,比例阀控制继电器J5与J6内常开触点的另一端并联,比例阀控制继电器J2、J3并联后与比例阀串联,并接在电源检测继电器J9上,比例阀控制继电器J5、J6并联后与比例阀串联,并接在电源检测继电器J10上;
如图3所示,所述的循环风机温度控制电路包括风机温度PLC控制器、进风温度检测表和回风温度检测表,循环风机的进风输出端串接进风温度检测表后与风机温度PLC控制器上的进风温度输入端口连接,循环风机的回风输出端串接回风温度检测表后与风机温度PLC控制器上的回风温度输入端口连接;所述的冷水机温度控制电路包括冷水机温度PLC控制器和冷水机温度检测表,冷水机的输出端串接冷水机温度检测表后与冷水机温度PLC控制器上的冷水机温度输入端口连接;所述的报警保护电路包括报警保护PLC控制器,报警控制继电器J1,电加热器控制继电器J4、J7,冷水机启停控制继电器J8和两组比例阀控制继电器J2、J3与J5、J6,报警控制继电器J1的控制端与报警保护PLC控制器的循环风机输出端口连接,报警控制继电器J1内设有至少两对常开触点,其中一对常开触点与蜂鸣器AL串联后并接在电源指示HL灯上,另一对常开触点与报警远传电路连接;电加热器控制继电器J4、J7的控制端分别与报警保护PLC控制器的电加热器电源输出端口连接,报警保护PLC控制器通过电加热器控制继电器J4、J7的常开触点与触电器KM1、KM2串联后与电加热器连接;冷水机启停控制继电器J8的控制端与报警保护PLC控制器的冷水机启停机输出端口连接,报警保护PLC控制器通过冷水机启停控制继电器J8的常开触点与冷水机连接;比例阀控制继电器J2、J3、J5、J6的控制端分别与报警保护PLC控制器的球阀输出端口连接,比例阀控制继电器J2、J3、J5、J6的常开触点分别与比例阀的两个输入端连接;
如图4所示,所述的输入输出保护隔离电路包括保护隔离PLC控制器,电加热器控制继电器J4、J7,风机过载控制继电器J14、J15,冷水机启停控制继电器J8,冷水机超压控制继电器J11,冷水机过载控制继电器J12,冷水机缺水控制继电器J13,报警控制继电器J1和电源检测继电器J9、J10,以及两组比例阀控制继电器J2、J3和J5、J6,供电电源回路上串接有电源指示灯HL,供电电源还与电源检测继电器J9、J10的控制端连接,并通过电源检测继电器J9、J10内的常开触点与保护隔离PLC控制器上的电加热器缺电输入端口连接,保护隔离PLC控制器上的循环风机输出端口与报警控制继电器J1的控制端相连,报警控制继电器J1内设至少两对常开触点,其中,一对常开触点与蜂鸣器AL串联后并接在电源指示灯HL上,另一对常开触点与报警远传电路连接,保护隔离PLC控制器上的两组球阀输出端口分别与比例阀控制继电器J2、J3及J5、J6的控制端相连,比例阀控制继电器J2、J3及J5、J6内的常开触点分别与比例阀的两个输入端相连,保护隔离PLC控制器上的电加热器电源输出端口与电加热器控制继电器J4、J7的控制端相连,并通过电加热器控制继电器J4、J7内的常开触点与触电器KM1、KM2串联后与电加热器连接,保护隔离PLC控制器上的电加热器比例输出端口与固定继电器SSR1、SSR2连接,保护隔离PLC控制器上的冷水机启停机输出端口与冷水机启停控制继电器J8的控制端相连,并通过冷水机启停控制继电器J8的常开触点与冷水机连接,循环风机的输出端与风机过载控制继电器J14、J15的控制端连接,并通过风机过载控制继电器J14、J15内的常闭触点与保护隔离PLC控制器上的风机过载输入端口连接,冷水机的输出端分别与冷水机超压控制继电器J11、冷水机过载控制继电器J12及冷水机缺水控制继电器J13的控制端连接,并分别通过冷水机超压控制继电器J11、冷水机过载控制继电器J12及冷水机缺水控制继电器J13内的常开触点与保护隔离PLC控制器上的冷水机超压、冷水机过载及冷水机缺水的输入端口连接。

Claims (1)

  1. 细菌、真菌培养室恒温控制系统,其特征在于:它包括PLC控制电路、冷水机、两组循环风机、两组电加热器、显示屏和控制触摸屏,一组冷水机、循环风机和电加热器置于细菌培养室中,另一组置于真菌培养室中,显示屏和控制触摸屏分别通过总线与PLC控制电路连接,冷水机和电加热器的位置分别设有传感器,各传感器的输出通过模拟量输入模块与PLC控制电路的输入连接;
    PLC控制电路包括供电电源控制电路、循环风机温度控制电路、冷水机温度控制电路、报警保护电路和输入输出保护隔离电路;
    所述的供电电源控制电路包括电源控制PLC控制器,电源检测继电器J9、J10,两组固定继电器SSR1、SSR2,两组电加热器,比例阀、控制系统电源、辅助电源以及两组比例阀控制继电器J2、J3及J5、J6,控制系统电源与辅助电源并联后串接在电源控制PLC控制器的三相输出电源T上,电源控制PLC控制器的三相输出电源T、S、R通过选择开关分别与触电器KM1、KM2内的三对常开触点连接,触电器KM1、KM2内三对常开触点的控制端分别串接有一个固定继电器SSR1、SSR2,每个固定继电器SSR1、SSR2上串接一个电加热器,每组三个电加热器的另一端并联,选择开关与触电器KM1、KM2内的三对常开触点之间的任意一条线路上连有一条外接线路,外接线路与电源检测继电器J9、J10连接,比例阀控制继电器J2、J5内常开触点、比例阀控制继电器J3、J6内常开触点的控制端分别串接在比例阀的两个输出端,比例阀控制继电器J2与J3内常开触点的另一端并联,比例阀控制继电器J5与J6内常开触点的另一端并联,比例阀控制继电器J2、J3并联后与比例阀串联,并接在电源检测继电器J9上,比例阀控制继电器J5、J6并联后与比例阀串联,并接在电源检测继电器J10上;
    所述的循环风机温度控制电路包括风机温度PLC控制器、进风温度检测表和回风温度检测表,循环风机的进风输出端串接进风温度检测表后与风机温度PLC控制器上的进风温度输入端口连接,循环风机的回风输出端串接回风温度检测表后与风机温度PLC控制器上的回风温度输入端口连接;
    所述的冷水机温度控制电路包括冷水机温度PLC控制器和冷水机温度检测表,冷水机的输出端串接冷水机温度检测表后与冷水机温度PLC控制器上的冷水机温度输入端口连接;
    所述的报警保护电路包括报警保护PLC控制器,报警控制继电器J1,电加热器控制继电器J4、J7,冷水机启停控制继电器J8和两组比例阀控制继电器J2、J3与J5、J6,报警控制继电器J1的控制端与报警保护PLC控制器的循环风机输出端口连接,报警控制继电器J1内设有至少两对常开触点,其中一对常开触点与蜂鸣器串联后并接在电源指示灯上,另一对常开触点与报警远传电路连接;电加热器控制继电器J4、J7的控制端分别与报警保护PLC控制器的电加热器电源输出端口连接,报警保护PLC控制器通过电加热器控制继电器J4、J7的常开触点与触电器KM1、KM2串联后与电加热器连接;冷水机启停控制继电器J8的控制端与报警保护PLC控制器的冷水机启停机输出端口连接,报警保护PLC控制器通过冷水机启停控制继电器J8的常开触点与冷水机连接;比例阀控制继电器J2、J3、J5、J6的控制端分别与报警保护PLC控制器的球阀输出端口连接,比例阀控制继电器J2、J3、J5、J6的常开触点分别与比例阀的两个输入端连接;
    所述的输入输出保护隔离电路包括保护隔离PLC控制器,电加热器控制继电器J4、J7,风机过载控制继电器J14、J15,冷水机启停控制继电器J8,冷水机超压控制继电器J11,冷水机过载控制继电器J12,冷水机缺水控制继电器J13,报警控制继电器J1和电源检测继电器J9、J10,以及两组比例阀控制继电器J2、J3和J5、J6,供电电源回路上串接有电源指示灯,供电电源还与电源检测继电器J9、J10的控制端连接,并通过电源检测继电器J9、J10内的常开触点与保护隔离PLC控制器上的电加热器缺电输入端口连接,保护隔离PLC控制器上的循环风机输出端口与报警控制继电器J1的控制端相连,报警控制继电器J1内设至少两对常开触点,其中,一对常开触点与蜂鸣器串联后并接在电源指示灯上,另一对常开触点与报警远传电路连接,保护隔离PLC控制器上的两组球阀输出端口分别与比例阀控制继电器J2、J3及J5、J6的控制端相连,比例阀控制继电器J2、J3及J5、J6内的常开触点分别与比例阀的两个输入端相连,保护隔离PLC控制器上的电加热器电源输出端口与电加热器控制继电器J4、J7的控制端相连,并通过电加热器控制继电器J4、J7内的常开触点与触电器KM1、KM2串联后与电加热器连接,保护隔离PLC控制器上的电加热器比例输出端口与固定继电器SSR1、SSR2连接,保护隔离PLC控制器上的冷水机启停机输出端口与冷水机启停控制继电器J8的控制端相连,并通过冷水机启停控制继电器J8的常开触点与冷水机连接,循环风机的输出端与风机过载控制继电器J14、J15的控制端连接,并通过风机过载控制继电器J14、J15内的常闭触点与保护隔离PLC控制器上的风机过载输入端口连接,冷水机的输出端分别与冷水机超压控制继电器J11、冷水机过载控制继电器J12及冷水机缺水控制继电器J13的控制端连接,并分别通过冷水机超压控制继电器J11、冷水机过载控制继电器J12及冷水机缺水控制继电器J13内的常开触点与保护隔离PLC控制器上的冷水机超压、冷水机过载及冷水机缺水的输入端口连接。
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