CN204316304U - A kind of frequency converter cooling system - Google Patents
A kind of frequency converter cooling system Download PDFInfo
- Publication number
- CN204316304U CN204316304U CN201420736817.0U CN201420736817U CN204316304U CN 204316304 U CN204316304 U CN 204316304U CN 201420736817 U CN201420736817 U CN 201420736817U CN 204316304 U CN204316304 U CN 204316304U
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- frequency converter
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- cooling
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Abstract
The utility model provides a kind of frequency converter cooling system, the basis of traditional frequency conversion device adds electric heater, entering at cold drawing, exit arranges the first temperature sensor and the second temperature sensor respectively, the arrival end of circulating pump connects the port of export of cold drawing, the port of export of circulating pump connects the entrance of electromagnetic three-way ratio adjusting valve, first port of export of electromagnetic three-way ratio adjusting valve connects the electric heater in frequency converter casing, second port of export connects the fin of frequency converter outside, the port of export of electric heater and the port of export of fin are together connected to the entrance point of cold drawing, also comprise PLC, the input of the Analog input mModule of PLC connects the first temperature sensor and the second temperature sensor respectively, the output control connection electromagnetic three-way ratio adjusting valve of PLC and cooling fan.The utility model can realize the dual-use function cooling cooling water and heat effectively, makes the range of application of frequency converter more extensive.
Description
Technical field
The utility model relates to frequency converter field, particularly relates to a kind of frequency converter cooling system.
Background technology
Along with the fast development of power electronic technology, the application of frequency converter is also increasingly extensive.Frequency converter operationally can produce a large amount of heat, for ensureing the normal work of frequency converter, need cool in real time frequency converter.Often adopt water-cooled or air-cooled mode to the cooling of frequency converter at present, but the cooling effect of these two kinds of types of cooling is unsatisfactory, and the cooling fan of its inside is in always and operates at full capacity, energy consumption is excessive; Meanwhile, because the workplace of frequency converter is different with season, if ambient temperature is lower than the normal working temperature of frequency converter, frequency converter just can not normally start.
Disclose a kind of frequency converter heat radiation cooling system and control method and device (patent No. CN103095098A) thereof in prior art and comprise first detection module, for detecting the first temperature; First judge module, for judging whether the first temperature is greater than preset temperature; First control module, for when the first temperature is greater than preset temperature, by-pass valve control is opened, and wherein, valve is arranged in the medium pipeline of system, and when valve is in open mode, coolant circulates in frequency converter heat radiation cooling system; And second control module, for when the first temperature is less than or equal to preset temperature, by-pass valve control is closed, and wherein, when valve is in closed condition, coolant is static in frequency converter heat radiation cooling system.
A kind of frequency converter cooling system (patent No. CN202550864U) is also disclosed in prior art, comprise frequency converter, cabinet top fan, indoor airduct, airduct elbow, outdoor air conduit, air exhauster, Water-cooled cabinet, cooling tower, described frequency converter is arranged on indoor, top is provided with cabinet top fan, cabinet top fan is connected with indoor airduct, indoor airduct, airduct elbow, outdoor air conduit, Water-cooled cabinet are connected successively, and described Water-cooled cabinet is connected with cooling tower.
Above-mentioned two kinds of cooling systems can reach the cooling requirements of frequency converter, and combine to relevant automatic control system, according to different actual conditions, adopt different radiating modes, serve the effect of energy-saving and emission-reduction.But due to frequency converter application scenario widely, in some extremely frigid zones or winter temperature lower ground district, once ambient temperature is lower than the normal working temperature of frequency converter, frequency converter just can not normally start; For this problem, current technology just heats frequency converter ambient air, then air and cooling fluid is carried out exchange heat, frequency converter is made to reach start-up temperature, but this method is not only slow, and heats uneven, is difficult to get a desired effect.At present for the problem that frequency converter can not normally start and frequency converter energy consumption is large at low ambient temperatures, not yet propose effective method and solve this two problems simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of frequency converter cooling system, effectively can realize the dual-use function cooling cooling water and heat, and makes the range of application of frequency converter more extensive, makes the energy consumption of system less simultaneously.
For achieving the above object, the utility model adopts following technical scheme:
A kind of frequency converter cooling system, comprise the cold drawing be arranged in frequency converter casing and the circulating pump being arranged on frequency converter outside, cooling fan and fin, described cold drawing, connected by cooling fluid circulation passage between circulating pump and fin, also electric heater is provided with in described frequency converter inside, in entering of described cold drawing, exit is respectively arranged with the first temperature sensor and the second temperature sensor, the arrival end of described circulating pump connects the port of export of cold drawing, the port of export of described circulating pump connects the entrance of electromagnetic three-way ratio adjusting valve by cooling fluid circulation passage, first port of export of described electromagnetic three-way ratio adjusting valve connects the electric heater in frequency converter casing, second port of export connects the fin of frequency converter outside, the port of export of described electric heater and the port of export of described fin are together connected to the entrance point of cold drawing by cooling fluid circulation passage, also comprise PLC, the input of the Analog input mModule of described PLC connects the first temperature sensor and the second temperature sensor respectively, the output control connection electromagnetic three-way ratio adjusting valve of described PLC and cooling fan.
The output of described PLC connects the coil of cooling fan control relay and electromagnetic three-way ratio adjusting valve respectively, and the normally opened contact of described cooling fan control relay is arranged on power supply and cooling fan controls between motor.
Described cooling fan has three.
The output of described PLC is also provided with warning device.
The utility model adds the heater of a Based Intelligent Control on the basis of original water cooling plant, take refrigerating mode or heating mode according to the actual temperature in frequency converter, the problem that ambient temperature can not normally start lower than frequency converter during frequency converter operating temperature can be solved well; Control electromagnetic three-way ratio adjusting valve when frequency converter needs to cool according to the actual temperature in frequency converter and regulate the circulation ratio of cooling fluid and the operation quantity of cooling fan, can cool frequency converter fast and effectively, and reduce energy consumption; Simultaneously by detecting frequency converter cooling fluid inlet temperature, outlet temperature, can judge whether frequency converter inside breaks down, reminding staff to overhaul in time by warning device.The utility model can ensure that frequency converter can be applied to different occasions, ensures that the frequency converter moment is operated in safe and reliable running status.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the circuit connection diagram of PLC described in the utility model;
Fig. 3 is the Analog input mModule circuit diagram of PLC described in the utility model;
Fig. 4 is the control circuit figure of cooling fan described in the utility model.
Embodiment
As shown in Figure 1, the utility model comprises circulating pump 1, electromagnetic three-way ratio adjusting valve 2, first temperature sensor 3, second temperature sensor 4, cooling fan 5, fin 6, electric heater 7, cold drawing 9 and PLC, described electric heater 7 and cold drawing 9 are positioned at frequency converter 8, with cooling liquid bath in described cold drawing 9, the power model of frequency converter 8 is arranged on cold drawing 9 surface, and cooling fluid flows out frequency converter 8 along cooling fluid circulation passage 10 after being taken away by the heat of cold drawing 9, be respectively arranged with the first temperature sensor 3 and the second temperature sensor 4 at the import and export place of cold drawing 9, when frequency converter does not start, what the first temperature sensor 3 and the second temperature sensor 4 detected is ambient temperature, when frequency converter normally works, the temperature of the cooling fluid that what the first temperature sensor 3 detected is after frequency converter heating, the temperature of the cooling fluid that what the second temperature sensor 4 detected is after cooling, connected the circulating pump 1 being positioned at frequency converter 8 outside by cooling fluid circulation passage 10 in the exit of cold drawing 9, circulating pump 1 is high speed centrifugation vane pump, can be the circulation of airtight liquid circulation and power is provided, the port of export of circulating pump 1 connects the entrance of electromagnetic three-way ratio adjusting valve 2 by cooling fluid circulation passage 10, first port of export of electromagnetic three-way ratio adjusting valve 2 connects the electric heater 7 in frequency converter 8, second port of export connects the fin 6 of frequency converter 8 outside, three cooling fans 5 are also provided with at fin 6 place, the port of export of electric heating 7 and the port of export of fin 6 are together connected to the entrance point of cold drawing 9 by cooling fluid circulation passage 10.
As Fig. 2, shown in Fig. 3 and Fig. 4, the utility model also comprises PLC, the input of the analog input module EM231 of PLC connects the first temperature sensor 3 and the second temperature sensor 4 respectively, the output of PLC connects electromagnetic three-way ratio adjusting valve 2 and relay K A1 respectively, KA2, the coil of KA3, relay K A1, KA2, the normally opened contact of KA3 is respectively by fuse FR1, FR2, FR3 connects cooling fan and controls motor 1, 2 and 3, PLC is by control relay KA1, KA2, the coil of KA3 obtains the whether electric closedown controlling its normally opened contact, thus the operation of controlled cooling model fan.
The utility model operationally, according to the temperature that the first temperature sensor 3 and second temperature sensor 4 of frequency converter 8 cooling fluid import and export detect, PLC controls electromagnetic three-way ratio adjusting valve 2 and cooling fan 5, makes frequency converter 8 moment be operated in safe and reliable state.
When ambient temperature is lower, when frequency converter 8 can not normally start, second port of export being controlled electromagnetic three-way ratio adjusting valve 2 by PLC is closed, and first port of export is opened completely, the circulation ratio of cooling fluid is adjusted to 100% through electric heater 7, makes frequency converter 8 reach cranking temperature;
When frequency converter 8 normally works, need to carry out temperature control to cooling fluid, the temperature of the power model of frequency converter 8 is made to remain within the scope of allowable temperature, according to the coolant temperature that temperature sensor 3 and 4 detects, controlling electromagnetic three-way ratio adjusting valve 2 by PLC regulates cooling fluid through the ratio of fin 6, is cooled by fin 6 and cooling fan 5 pairs of cooling fluids.Be provided with three cooling fans 5 at fin place, drive two cooling fans during normal work, increase a cooling fan when the cooling fluid ratio flowing through fin 6 reaches 87%, close a cooling fan when the cooling fluid ratio flowing through fin 6 is less than 30%.In order to avoid cooling fan long-time continuous is run, after a cooling fan runs 24 hours continuously, if available free cooling fan, PLC can control idle cooling fan and automatically run, the cooling fan running 24 hours continuously cuts out, to increase the useful life of cooling fan simultaneously; When frequency converter 8 is in oepration at full load, cooling device is needed to be cooled by the heat produced in frequency converter 8 with the fastest speed, now, liquid circulation ratio is adjusted to 100% and flows through fin 6 by PLC control electromagnetic three-way ratio adjusting valve 2, now three cooling fans all run, and the cooling fluid flowing through fin 6 is cooled fast.
In addition, also warning device is provided with at the output of PLC, the temperature detected when the second temperature sensor 4 higher than design temperature 3 DEG C and keep 2 minutes or temperature that the second temperature sensor 4 detects higher than design temperature 5 DEG C, then think that cooling system lost efficacy, warning device is reported to the police, and whether cooling system exists the situations such as cooling fluid is rotten, line clogging to remind staff to check.
PLC in the application also can adopt other chips such as single-chip microcomputer or DSP to replace, and the cooling fluid in addition in the application is cooling water, and also usable oils or other cooling fluids replace.
Claims (4)
1. a frequency converter cooling system, comprise the cold drawing be arranged in frequency converter casing and the circulating pump being arranged on frequency converter outside, cooling fan and fin, described cold drawing, connected by cooling fluid circulation passage between circulating pump and fin, it is characterized in that: be also provided with electric heater in described frequency converter inside, in entering of described cold drawing, exit is respectively arranged with the first temperature sensor and the second temperature sensor, the arrival end of described circulating pump connects the port of export of cold drawing, the port of export of described circulating pump connects the entrance of electromagnetic three-way ratio adjusting valve by cooling fluid circulation passage, first port of export of described electromagnetic three-way ratio adjusting valve connects the electric heater in frequency converter casing, second port of export connects the fin of frequency converter outside, the port of export of described electric heater and the port of export of described fin are together connected to the entrance point of cold drawing by cooling fluid circulation passage, also comprise PLC, the input of the Analog input mModule of described PLC connects the first temperature sensor and the second temperature sensor respectively, the output control connection electromagnetic three-way ratio adjusting valve of described PLC and cooling fan.
2. a kind of frequency converter cooling system as claimed in claim 1, it is characterized in that: the output of described PLC connects the coil of cooling fan control relay and electromagnetic three-way ratio adjusting valve respectively, the normally opened contact of described cooling fan control relay is arranged on power supply and cooling fan controls between motor.
3. a kind of frequency converter cooling system as claimed in claim 1 or 2, is characterized in that: described cooling fan has three.
4. a kind of frequency converter cooling system as claimed in claim 3, is characterized in that: the output of described PLC is also provided with warning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736817.0U CN204316304U (en) | 2014-12-01 | 2014-12-01 | A kind of frequency converter cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736817.0U CN204316304U (en) | 2014-12-01 | 2014-12-01 | A kind of frequency converter cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204316304U true CN204316304U (en) | 2015-05-06 |
Family
ID=53138599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420736817.0U Withdrawn - After Issue CN204316304U (en) | 2014-12-01 | 2014-12-01 | A kind of frequency converter cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204316304U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377938A (en) * | 2014-12-01 | 2015-02-25 | 南阳防爆集团电气系统工程有限公司 | Converter cooling system |
| CN110398996A (en) * | 2019-08-19 | 2019-11-01 | 盛昌科技(深圳)有限公司 | A kind of heat exchange cooling temperature sensor and heat exchange cooling temperature sensing equipment |
| CN111010846A (en) * | 2019-11-13 | 2020-04-14 | 珠海格力电器股份有限公司 | Heat exchanger substrate of plate-type frequency converter, heat exchanger, frequency converter and automatic temperature adjusting method of frequency converter |
-
2014
- 2014-12-01 CN CN201420736817.0U patent/CN204316304U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377938A (en) * | 2014-12-01 | 2015-02-25 | 南阳防爆集团电气系统工程有限公司 | Converter cooling system |
| CN110398996A (en) * | 2019-08-19 | 2019-11-01 | 盛昌科技(深圳)有限公司 | A kind of heat exchange cooling temperature sensor and heat exchange cooling temperature sensing equipment |
| CN111010846A (en) * | 2019-11-13 | 2020-04-14 | 珠海格力电器股份有限公司 | Heat exchanger substrate of plate-type frequency converter, heat exchanger, frequency converter and automatic temperature adjusting method of frequency converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150506 Effective date of abandoning: 20170926 |