CN206805318U - Temperature control system in frequency conversion tank - Google Patents

Temperature control system in frequency conversion tank Download PDF

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Publication number
CN206805318U
CN206805318U CN201720481146.1U CN201720481146U CN206805318U CN 206805318 U CN206805318 U CN 206805318U CN 201720481146 U CN201720481146 U CN 201720481146U CN 206805318 U CN206805318 U CN 206805318U
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China
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unit
temperature
frequency conversion
conversion tank
control unit
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CN201720481146.1U
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Inventor
杨贺轩
平庆东
张英男
王春雷
刘欣
刘健
李佳阳
许彬彬
刘力
宋军
李德强
张明宇
田志坚
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Boyang Intelligent Technology Engineering Panjin Co ltd
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PANJIN LIAOHE OILFIELD BOYANG INDUSTRIAL TECHNOLOGY Co Ltd
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Abstract

The utility model discloses temperature control system in a kind of frequency conversion tank, it includes rack (1), and it is arranged at rack (1) internal control unit (2), detection unit (3), execution unit (4) and communication unit (5), the detection unit (3), execution unit (4) and communication unit (5) are all connected to control unit (2), it is characterised in that:Detection unit (3) the acquisition system status information, and the information of collection is sent to control unit;Described control unit (2) reception system status information, and execution unit (4) action is controlled according to system status information;The execution unit (4) includes stepper motor, radiator fan, heater.The utility model realizes low-temperature heat and the automatic switchover of high temperature heat sinking function according to environment temperature, frequency converter is set to be operated within the scope of reasonable temperature, extend the service life of frequency converter and reduce the fault rate of frequency converter, further increase the adaptive capacity to environment of equipment.

Description

Temperature control system in frequency conversion tank
Technical field
Technical field of temperature control is the utility model is related to, particularly relates to temperature control system in a kind of frequency conversion tank.
Background technology
The ambient operating temperatures of usual frequency converter are generally -10 DEG C~+40 DEG C.It is too high or too low for temperature all can be to frequency converter Normal operation produce certain influence.
Equipment long-time hot operation, the fault rate of frequency converter will be greatly increased, and frequency converter is lost based on main circuit, 98% is accounted for, control circuit accounts for 2%.Electronics, electrical equipment especially large scale integrated circuit inside frequency converter, its heating are asked Topic is always insoluble technical barrier in field.The rise of electronic equipment temperature causes its internal microelectronic element such as PN Section temperature drift it is serious and form voltage, current parameters change, and then cause misprogramming and failure or even fail.In frequency conversion tank electrically System, secondary coil and relay system etc. occur superheating phenomenon, easily cause one-time contact because of high temperature local melting, make contact Face out-of-flatness and strike sparks, cause short circuit accident.Abnormal heating problem once occurs necessarily to have a strong impact on production or even brought huge Economic loss.In order to ensure frequency converter normal operation, integrated heat dissipation fan generally is added in its inner fin part, with Solves frequency converter heat dissipation problem.
And equipment cold operation is directed to, two kinds of low temperature limit temperature of general provision are respectively in the technical parameter of frequency converter Storage temperature and running temperature.The low temperature limit of running temperature is typically at -10 ° -0 °.Frequency converter passes through installed in power component Temperature detecting unit is alarmed by running temperature and troubleshooting.In north of china in winter outdoor temperature than relatively low, running temperature is low Happen occasionally in the situation of low temperature limit, particularly when frequency converter firm startup optimization, usually occur because temperature is too low, And the situation generation for causing frequency converter normally to start, and even if achievement is started can also shadow be produced to the service life of frequency converter Ring.
In summary, in design and use frequency converter, it is necessary to take into full account its specific works environment, it is ensured that its work temperature Degree is in normal range (NR).Therefore, need badly and develop in a kind of frequency conversion tank of stable performance temperature control system to meet frequency converter Normal use demand.
The content of the invention
In view of insufficient existing for prior art, the purpose of this utility model is to provide for one kind can be real according to environment temperature Existing low-temperature heat and high temperature heat sinking function automatically switch, and ensure the temperature control system that frequency converter is operated within the scope of reasonable temperature System.
To achieve these goals, technical solution of the present invention is as follows:
Temperature control system in a kind of frequency conversion tank, it includes rack, and is arranged at the control unit of interior of equipment cabinet, detection Unit, execution unit and communication unit, the detection unit, execution unit and communication unit are all connected to control unit, and it is special Sign is:
The detection unit acquisition system status information, and the information of collection is sent to control unit, the system shape State information comprises at least in-cabinet temperature information, heatsink temperature information, frequency converter work state information, frequency conversion tank mode of operation letter Breath and radiating blinds action status information;
Described control unit reception system status information, and execution unit action is controlled according to system status information;
The execution unit includes stepper motor, radiator fan, heater and stepper motor, radiator fan, heater Each self-corresponding control circuit, each control circuit are all connected to the output interface of described control unit.
Further, the detection unit includes temperature collection circuit, frequency converter working condition and frequency conversion tank mode of operation Detect circuit, radiating blinds state detection circuit.
Further, described control unit includes A/D modular converters, scale conversion module and the single-chip microcomputer being sequentially connected Module, the system status information that the detection unit is sent is after A/D modular converters and scale conversion resume module, as input Data analyze and process for one-chip computer module.
Further, the system also includes power supply unit, it include all the way 12VDC power supplys, all the way 5VDC power supplys and Benchmark direct current 5V power supplys all the way, to meet system each unit power demand.
Further, the communication unit uses RS485 communicating circuits.
Further, described control unit is additionally provided with parameter setting interface, and it is connected with button display module, to set Low temperature threshold and high temperature threshold value parameter.
Compared with prior art, beneficial effects of the present invention:
1st, the utility model can realize system in low-temperature heat function between high temperature heat sinking function according to in-cabinet temperature Free switching, heating and radiating are automatically controlled, in-cabinet temperature is maintained in the claimed range of frequency converter operation, extend frequency conversion The service life of device and the fault rate for reducing frequency converter, and then reduce cost of equipment maintenance and improve equipment operating efficiency;
2nd, the utility model significantly improves the adaptive capacity to environment of equipment, and ensureing can in unconventional environment down coversion cabinet Normal operation works.
3rd, the utility model opens the blinds of closure ventilating opening using stepping electrical equipment control, has good dust-proof, rain-proof Effect, the degree of protection of cabinet is improved, extend the service life of system.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the utility model functional block diagram;
Fig. 2 is the utility model A/D modular converter circuit connection diagrams;
Fig. 3 is that the utility model digital quantity detects circuit connection diagram;
Fig. 4 is the utility model one-chip computer module chip connection figures;
Fig. 5 is the utility model stepper motor driving circuit connection figure;
Fig. 6 is the utility model fan drive circuit connection figure;
Fig. 7 is the utility model power supply unit circuit connection diagram.
In figure:1st, cabinet, 2, control unit, 3, detection unit, 4, execution unit, 5, communication unit.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached in the embodiment of the present invention Figure, technical scheme is clearly and completely described, it is clear that described embodiment is that a part of the invention is real Apply example, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation Property work under the premise of the every other embodiment that is obtained, belong to the scope of protection of the invention.
The ambient operating temperatures of usual frequency converter typically require -10 DEG C~+40 DEG C.Too high or too low environment temperature, all Certain influence can be produced to the normal operation of frequency converter.Vast northern area climate characteristic is notable, and summer temp is high, frequency conversion tank Interior electrical system heating easily causes in-cabinet temperature too high;And winter temperature is extremely low, being easily caused frequency converter can not normally start.
Based on above-mentioned design background, the utility model devises temperature control system in a kind of frequency conversion tank, with reference to attached Figure and specific embodiment further illustrate technical scheme:
As shown in figure 1, temperature control system in a kind of frequency conversion tank, it includes rack (1), and is arranged in rack (1) Control unit (2), detection unit (3), execution unit (4) and the communication unit (5) in portion, the detection unit (3), execution unit (4) and communication unit (5) is all connected to control unit (2).
Wherein, detection unit (3) acquisition system status information, and the information of collection is sent to control unit (2), it is wrapped Include temperature collection circuit, frequency converter working condition and frequency conversion tank mode of operation detection circuit, radiating blinds state detection circuit.And Foregoing circuit module correspondingly gathers in-cabinet temperature information, heatsink temperature information, frequency converter work state information, frequency conversion tank work Pattern information and radiating blinds action status information.
Control unit (2) reception system status information, and execution unit (4) action is controlled according to system status information.Control Unit (2) processed includes A/D modular converters, scale conversion module and the one-chip computer module being sequentially connected, the detection unit (3) The system status information of transmission supplies one-chip computer module after A/D modular converters and scale conversion resume module, as input data Analyzing and processing.Meanwhile control unit (2) has been additionally provided with parameter setting interface, it is connected with button display module, low to set Warm threshold value and high temperature threshold value parameter.
Fig. 2 show A/D modular converter circuit connection diagrams, and as seen from the figure, A/D modular converters include two-way conversion electricity Road, wherein being connected all the way with collection in-cabinet temperature Acquisition Circuit, the in-cabinet temperature Acquisition Circuit uses output quantity as 4-20MA's Temperature transmitter, analog output is converted into by corresponding digital quantity by A/D change-over circuits;Another way and frequency converter analog quantity Output interface is connected, and by the temperature of frequency converter fin, corresponding digital quantity is converted into by scale conversion.
Fig. 3 show radiating blinds state detection circuit and frequency converter working condition and frequency conversion tank mode of operation detection circuit Connection diagram.As seen from the figure, the blinds state detection circuit that radiates can open the radiating blinds at left and right sides of casing and closure Position signalling, directly collected as digital quantity in one-chip computer module, and when single-chip microcomputer issue open command when, radiate blinds State detection circuit gathers position signalling, when detecting the position signalling that radiating blinds is opened, stops the operating of stepper motor; When single-chip microcomputer issues close command, radiating blinds state detection circuit collection position signalling, when detecting radiating blinds closure Position signalling when, stop the operating of stepper motor.Frequency converter working condition and frequency conversion tank mode of operation detection circuit can be by casees The operation of the power electronic equipments such as the frequency converter installed in vivo and stopped status signal, and device interior fan operation and shutdown Status signal, collect in single-chip microcomputer, to judge whether start and stop in-cabinet temperature automatic control system.
It is illustrated in figure 4 one-chip computer module chip connection signal mode, it is preferred to use ATMEGA single-chip microcomputers are as whole system The working centre of system, embedded program is worked out, reaches the functional requirement of system.
Execution unit (4) is each including stepper motor, radiator fan, heater and stepper motor, radiator fan, heater Self-corresponding control circuit, each control circuit are all connected to the output interface of described control unit (2).
Fig. 5 show stepper motor driving circuit connected mode, and one-chip computer module drives step by controlling drive circuit Stepper motor, further control unlatching and the closure of casing radiating blinds.
Fan drive circuit connected mode is illustrated in figure 6, one-chip computer module is according to environment in frequency converter fin and cabinet Temperature, and high/low temperature threshold temperature set in advance, automatically control the cooling fan and electric heater unit of cabinet, make cabinet Interior environment temperature meets the requirement of equipment operation.When in-cabinet temperature is too high needs to start blower fan, pass through stepper motor first The ventilation and heat mouth blinds of casing is opened, restarts blower fan, when temperature reaches zone of reasonableness and stops blower fan, first stops wind Machine, then the ventilation and heat mouth blinds by stepper motor closing casing.When in-cabinet temperature is less than low temperature threshold, single-chip microcomputer control Electric heater unit in cabinet, the environment temperature in cabinet is set to meet the requirement of equipment operation.
It is illustrated in figure 7 power supply unit circuit connecting mode.Power supply unit includes 12VDC power supplys, all the way 5VDC electricity all the way Source and all the way benchmark direct current 5V power supplys, to meet system each unit power demand.
In addition, system also includes communication unit (5), it uses RS485 communicating circuits, and reserved communication interface is to realize System extension.
The utility model when in use, by the temperature collection circuit of detection unit, gathers environment temperature and frequency conversion in cabinet Device heatsink temperature, said temperature information is changed into the temperature value into actual with scale conversion by A/D, as control process Key data is sent to single-chip microcomputer.- 10 ° and+40 ° of the Limit temperature value that system is run previously according to frequency converter, sets frequency converter The low temperature threshold and high temperature threshold value of cabinet interior environment temperature.When environment temperature is less than low temperature threshold, single-chip microcomputer by control after Electrical equipment starts heater, until when temperature is heated above the return difference value of threshold temperature, stops heater.When environment temperature height When high temperature threshold value, whether circuit judges equipment is detected in power frequency fortune by frequency converter working condition and frequency conversion tank mode of operation Row state or converting operation state.When frequency converter is in converting operation state, single-chip microcomputer passes through stepper motor driving circuit Two stepper motors are made to rotate forward operation, until detection both sides blinds opening point closure.Blinds open after, single-chip microcomputer by control after Electrical equipment starts the cooling fan of cabinet both sides.Cabinet internal temperature declines therewith, when in-cabinet temperature is brought down below high temperature threshold value During the return difference value of temperature, stop the operation of blower fan, then inverted and run by stepping electrode, close cabinet both sides blinds, until inspection Survey both sides blinds closing point closure.
The system reserves parameter setting interface and RS485 communication interfaces.In system debug, using button display module with Interface connects, and sets low temperature threshold and high temperature threshold value parameter.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.

Claims (6)

1. temperature control system in a kind of frequency conversion tank, it includes rack (1), and is arranged at the internal control unit of rack (1) (2), detection unit (3), execution unit (4) and communication unit (5), the detection unit (3), execution unit (4) and communication unit First (5) are all connected to control unit (2), it is characterised in that:
Detection unit (3) the acquisition system status information, and the information of collection is sent to control unit, the system mode Information comprises at least in-cabinet temperature information, heatsink temperature information, frequency converter work state information, frequency conversion tank operating mode information And radiating blinds action status information;
Described control unit (2) reception system status information, and execution unit (4) action is controlled according to system status information;
The execution unit (4) is each including stepper motor, radiator fan, heater and stepper motor, radiator fan, heater Self-corresponding control circuit, each control circuit are all connected to the output interface of described control unit (2).
2. temperature control system in frequency conversion tank according to claim 1, it is characterised in that:The detection unit (3) includes Temperature collection circuit, frequency converter working condition and frequency conversion tank mode of operation detection circuit, radiating blinds state detection circuit.
3. temperature control system in frequency conversion tank according to claim 1, it is characterised in that:Described control unit (2) includes A/D modular converters, scale conversion module and the one-chip computer module being sequentially connected, the system shape that the detection unit (3) sends State information analyzes and processes after A/D modular converters and scale conversion resume module, as input data for one-chip computer module.
4. temperature control system in frequency conversion tank according to claim 1, it is characterised in that:It is single that the system also includes power supply Member, it includes 12VDC power supplys, all the way 5VDC power supplys and benchmark direct current 5V power supplys all the way all the way, to meet that system each unit is used Electric demand.
5. temperature control system in frequency conversion tank according to claim 1, it is characterised in that:The communication unit (5) uses RS485 communicating circuits.
6. temperature control system in frequency conversion tank according to claim 3, it is characterised in that:Described control unit (2) is also set There is parameter setting interface, it is connected with button display module, to set low temperature threshold and high temperature threshold value parameter.
CN201720481146.1U 2017-05-03 2017-05-03 Temperature control system in frequency conversion tank Active CN206805318U (en)

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Application Number Priority Date Filing Date Title
CN201720481146.1U CN206805318U (en) 2017-05-03 2017-05-03 Temperature control system in frequency conversion tank

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Application Number Priority Date Filing Date Title
CN201720481146.1U CN206805318U (en) 2017-05-03 2017-05-03 Temperature control system in frequency conversion tank

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108489047A (en) * 2018-03-28 2018-09-04 芜湖美智空调设备有限公司 Intelligent power module component, air conditioner and its control method
CN109067301A (en) * 2018-08-15 2018-12-21 浙江佳乐科仪股份有限公司 A kind of 1E grades of frequency conversion cabinet control system
CN110248523A (en) * 2019-06-12 2019-09-17 江苏瑞奇海力科技有限公司 A kind of elevator control cabinet temprature control method and device
CN110543196A (en) * 2019-08-13 2019-12-06 华为技术有限公司 Control method and control device for heat dissipation element
CN111056471A (en) * 2020-03-03 2020-04-24 宝鸡巨菱钻采设备有限责任公司 Lifting device for oil drilling machine based on alternating-current variable-frequency electric winch
CN112214057A (en) * 2020-10-30 2021-01-12 中山斯瑞德环保科技有限公司 Temperature and humidity control system and method for frequency converter
CN112804777A (en) * 2019-11-13 2021-05-14 株洲中车时代电气股份有限公司 Heating control device and method for external screen cabinet of rail transit vehicle
CN113163681A (en) * 2021-03-31 2021-07-23 山东宇飞传动技术有限公司 Converter heat abstractor suitable for extremely cold environment
CN117650396A (en) * 2024-01-30 2024-03-05 深圳市蓝思航技术有限公司 Fault protection device for frequency converter

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108489047A (en) * 2018-03-28 2018-09-04 芜湖美智空调设备有限公司 Intelligent power module component, air conditioner and its control method
CN109067301A (en) * 2018-08-15 2018-12-21 浙江佳乐科仪股份有限公司 A kind of 1E grades of frequency conversion cabinet control system
CN110248523A (en) * 2019-06-12 2019-09-17 江苏瑞奇海力科技有限公司 A kind of elevator control cabinet temprature control method and device
CN110543196A (en) * 2019-08-13 2019-12-06 华为技术有限公司 Control method and control device for heat dissipation element
CN112804777A (en) * 2019-11-13 2021-05-14 株洲中车时代电气股份有限公司 Heating control device and method for external screen cabinet of rail transit vehicle
CN111056471A (en) * 2020-03-03 2020-04-24 宝鸡巨菱钻采设备有限责任公司 Lifting device for oil drilling machine based on alternating-current variable-frequency electric winch
CN111056471B (en) * 2020-03-03 2024-08-16 宝鸡巨菱钻采设备有限责任公司 Lifting device for petroleum drilling machine based on alternating-current variable-frequency electric winch
CN112214057A (en) * 2020-10-30 2021-01-12 中山斯瑞德环保科技有限公司 Temperature and humidity control system and method for frequency converter
CN113163681A (en) * 2021-03-31 2021-07-23 山东宇飞传动技术有限公司 Converter heat abstractor suitable for extremely cold environment
CN117650396A (en) * 2024-01-30 2024-03-05 深圳市蓝思航技术有限公司 Fault protection device for frequency converter
CN117650396B (en) * 2024-01-30 2024-05-14 深圳市蓝思航技术有限公司 Fault protection device for frequency converter

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Address after: 124299 Dawa Town, Dawa County, Panjin City, Liaoning Province (Panjin Food Industry Circular Economy Demonstration Park)

Patentee after: Boyang Intelligent Technology Engineering (Panjin) Co.,Ltd.

Address before: 124000 Dawa Town, Dawa County, Panjin City, Liaoning Province (Panjin Food Industry Circular Economy Demonstration Park)

Patentee before: PANJIN LIAOHE OIL FIELD BOYANG INDUSTRIAL CONTROL TECHNOLOGY CO.,LTD.

CP03 Change of name, title or address