CN207369499U - A kind of explosion-proof positive pressure cabinet of active cooling with air -return duct - Google Patents
A kind of explosion-proof positive pressure cabinet of active cooling with air -return duct Download PDFInfo
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- CN207369499U CN207369499U CN201721159932.6U CN201721159932U CN207369499U CN 207369499 U CN207369499 U CN 207369499U CN 201721159932 U CN201721159932 U CN 201721159932U CN 207369499 U CN207369499 U CN 207369499U
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- positive pressure
- return duct
- active cooling
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Abstract
The utility model provides a kind of explosion-proof positive pressure cabinet of active cooling with air -return duct, including cabinet chamber air exchange system, Active Cooling System, internal circulation system and cooling control system.The internal circulation system includes axial flow blower, positive pressure cabinet chamber, air -return duct and guiding device；Cabinet interior air-flow is formed since wind turbine mouth, through inner cavity, air -return duct, deflector, heat exchanger under the driving of axial flow blower, then the circulating current to wind turbine mouth.Using Active Cooling, in the case where the internal heat generation of positive pressure cabinet is relatively more, environment temperature is of a relatively high and cabinet internal-external temperature difference is small, realizes in cabinet and quickly cool down, keep temperature relatively low in cabinet.
Description
Technical field
It the utility model is related to a kind of electrical cabinet applied under inflammable and explosive environment, and in particular to one kind has air -return duct
The explosion-proof positive pressure cabinet of active cooling.
Background technology
Positive pressure cabinet is in electrical control cabinet used in explosion-proof field, its basic principle is to cabinet in the case where cabinet is closed
Air is inside passed through, pressure in cabinet is more than environmental pressure, and then prevents hazardous gas from entering in cabinet, makes the common electrical member of inside
Part energy normal operation.Since pressure is more than environmental pressure, thus referred to as positive pressure cabinet in cabinet.Since positive pressure cabinet is all-sealed structure,
Difficulty is brought to being reduced inside positive pressure cabinet.
Currently used cooling means mainly has：
1st, natural cooling
This method is worked by way of positive pressure cabinet outer wall natural heat dissipation, less suitable for positive pressure cabinet internal heat generation,
And ambient temperature it is relatively low when use.When positive pressure cabinet is run, when causing the internal temperature to raise due to fever, outside positive pressure cabinet
The temperature of wall is also with rise, and at this moment heat is shed by outer wall to naturally in cabinet.In order to increase heat dissipation effect, need sometimes
Radiator is installed in cabinet wall.
Since heat can only be from high waterfall to low temperature transmission, thus in-cabinet temperature is necessarily higher than environment temperature.Work as environment temperature
It is higher, when cabinet internal-external temperature difference is smaller, heat dissipation effect unobvious.
2nd, circulating cooling（Water cooling）
Circulating cooling is usually the cooling means used when natural cooling cannot be met the requirements, its cooling effect is better than certainly
So cooling.This method makes coolant by setting cabinet inner-outer circulation pipeline（Water）After being heated in cabinet interior conduit by environment, stream
Move and radiate again in cabinet Outer Tube.Since coolant uses water, thus referred to as water cooling.
This mode passes through coolant（Water）The direct band of heat in cabinet is offerd for sale outer, then radiated by duct wall, although
Can be shed more heats, but also can only be by heat from high temperature to low temperature transmission, when environment temperature is higher, cabinet internal-external temperature difference is smaller
When, heat dissipation effect unobvious.
3rd, exhaust cooling
This cooling means is to open the exhaust passage of positive pressure cabinet, the cooling side that the hot-air in positive pressure cabinet is discharged
Method.This method need to increase the supply of air inlet, to maintain the positive pressure in cabinet, thus air exchanging rate is slow, cold while exhaust
But effect is limited, if increasing capacity, may cause positive pressure cabinet decompression.
4th, air conditioner type radiates
This mode lowboy by the way of air-conditioning is installed additional reduces, but there is a situation where the circulation of cabinet inner air and outer air, it is impossible to uses
In positive pressure cabinet, and air-conditioning is of high cost.
The content of the invention
The utility model provides a kind of explosion-proof positive pressure cabinet of active cooling with air -return duct, using Active Cooling,
In the case that positive pressure cabinet internal heat generation is relatively more, environment temperature is of a relatively high and cabinet internal-external temperature difference is small, realizes in cabinet and quickly cool down,
Keep temperature relatively low in cabinet.Even control in-cabinet temperature is less than environment temperature in extreme circumstances, thoroughly solves positive pressure cabinet
Cooling problem.
The utility model is specific as follows.
A kind of explosion-proof positive pressure cabinet of active cooling with air -return duct, including cabinet chamber air exchange system, Active Cooling System, interior follow
Loop system and cooling control system, it is characterised in that the internal circulation system include axial flow blower, positive pressure cabinet chamber, air -return duct and
Guiding device；The air -return duct is arranged in positive pressure cabinet arranged on left and right sides, pastes the flat distribution of side wall, and the internal circulation system is working
When, cabinet interior air-flow is formed since wind turbine mouth, through inner cavity, air -return duct, deflector, heat exchange under the driving of axial flow blower
Device, then the circulating current to wind turbine mouth.
Further, the guiding device is deflector.
Further, heat exchanger is installed additional in air -return duct.
Further, working chamber and circulation air path are divided in cabinet.
Further, the cabinet chamber air exchange system includes cabinet, inlet channel, exhaust passage and intake and exhaust control section.
Further, the cabinet inner cavity diagonal position that the air inlet in cabinet chamber air exchange system, exhaust outlet are arranged in.
Further, the Active Cooling System includes compressor, refrigerant circulation line, cabinet inner heat adsorption type heat exchange
The outer heat rejecting heat exchanger of device, cabinet and relevant control circuit.
Further, the refrigerant circulation line includes circulation pipe, capillary and drier.
Further, cinclides was set on positive pressure cabinet.
The utility model has the following advantages：
1. using the system of interior circulation, inner cavity, air -return duct, deflector, heat exchanger, wind turbine etc. is formed circulation air path, make
In-cabinet temperature is uniform, and thermal current is passed through interior heat exchanger, improves cooling effect；
2. the adherent arrangement of air -return duct, due to being thermal current in air -return duct, thus can make full use of cabinet wall directly to be radiated；
3. use compression-type refrigeration principle, can by heat from low temperature to high temperature transmission, even if realize environment temperature it is higher,
Can be sufficiently cool to being carried out in cabinet；
4. the electrical systems such as the compressor needed for cooling system, because may be mounted at the safe thing environment in positive pressure cabinet,
Non- anti-explosion device thus can be used, reduces cost；
Using inside and outside heat exchanger, cooling effect is improved.
Brief description of the drawings
Fig. 1 is active cooling-type positive pressure cabinet and operation principle schematic diagram；
Fig. 2 is air -return duct and interior heat exchanger cross-sectional view；
Wherein, 1- deflectors, 2- inside heat exchangers, 3- wind turbines, 4- air -return ducts, 5- compressors and control system, 6- into
Gas passage, 7- exhaust passages, 8- capillaries, 9- driers, 10- outer heat-exchangers, 11- circulation lines, 12- temperature sensors,
13- cabinets, 14- heat exchangers, 15- air -return ducts.
Embodiment
The utility model is described further with reference to embodiment.
A kind of explosion-proof positive pressure cabinet of active cooling with air -return duct, including cabinet chamber air exchange system, Active Cooling System, interior follow
Loop system and cooling control system.The internal circulation system includes axial flow blower, positive pressure cabinet chamber, air -return duct and guiding device；Just
Pressure cabinet can select the positive pressure cabinet of standard specification, model, can also special designing.This patent with positive pressure cabinet sheet without special to wanting
Ask.Considering the needs of the forward and backward enabling of positive pressure cabinet, the air -return duct is arranged in positive pressure cabinet arranged on left and right sides, pastes the flat distribution of side wall,
Reduce to the occupancy of the cabinet inner cavity useful space, the internal circulation system at work, cabinet interior air-flow under the driving of axial flow blower,
Formed since wind turbine mouth, through inner cavity, air -return duct, deflector, heat exchanger, then the circulating current to wind turbine mouth.
The temperature of the cooling control system control positive pressure cabinet, by the temperature of diverse location in detecting box, controls positive pressure
Cabinet discontinuous operation（Or variable frequency work）, in-cabinet temperature is maintained in the range of setting.When temperature over-range, provide alarm or carry
Show.Since the place circuit of cooling control system is in positive pressure cabinet, thus non-anti-explosion device can be chosen.
The guiding device can be deflector, its main function is the air-flow for making air -return duct uniformly through following heat exchange
Device, can use simple perforated plate construction, need to optimize the density of hole size, shape.
For active cooling-type positive pressure cabinet, its internal exchanger concentrates " low-temperature receiver " equivalent to one, opposite due to low-temperature receiver
Concentrate, be easy to cause the temperature distributing disproportionation in positive pressure cabinet intracavitary portion.And internal circulation system can make sufficiently cool in cabinet, and make cabinet
The effect of interior uniformity of temperature profile, thus positive pressure cabinet is particularly important.
During work, cabinet interior air-flow under the driving of axial flow blower, formed since wind turbine mouth, through inner cavity, air -return duct, lead
Flowing plate, heat exchanger, then the circulating current to wind turbine mouth.
Air-flow becomes cold air after heat exchanger, blows to cabinet chamber, and whole cabinet chamber is cooled down；Air-flow is after cabinet chamber, quilt
After the heating of cabinet internal heat generation component, temperature rise, then after circulation air path, under the action of deflector, distributing is by changing
Hot device, carries out the work of next circulation after cooling.
Cabinet chamber air exchange system is made of cabinet, inlet channel, exhaust passage and intake and exhaust control section, is standard positive pressure cabinet
Basic configuration, each several part in positive pressure cabinet is fully taken a breath.
Active Cooling System, using compression-type refrigeration principle, by compressor, refrigerant circulation line, cabinet inner heat adsorption type heat
Exchanger, cabinet outer heat rejecting heat exchanger and relevant control circuit etc. are formed；Cabinet inner heat adsorption type heat exchanger can use sheet,
Netted, for cooling tube after internal reciprocal arrangement, air-flow warp, air can fully carry out heat exchange with tube refrigerant；Cabinet is put outside
Accepting heat exchanger is nature air swept type, simple in structure, and pipe is evenly distributed；Inner cooling system is because need not very low temperature
Degree, thus capillary not only can guarantee that cooling effect, but also can prevent the generation of condensed water with respect to tubbiness.
Compressor in Active Cooling System, need to be according to always hair power be chosen in cabinet in compression horsepower, usual compressor
Power is the 30% of refrigeration work consumption.
Guarantee replacement circulation pipe in figure, capillary, drier etc. of refrigerant circulation line is formed.The length of capillary with it is interior
Footpath, determines the temperature of inner tube, its relation is that capillary is longer, internal diameter is smaller, then resistance is bigger, then internal temperature is lower.Cross
Low internal temperature, be easy to cause condensed water.
Its operation principle is summarized as follows：
1) compressor sucks low-temperature refrigerant steam from pipeline on the inside of cabinet, compressed to be changed into high pressure, high temperature refrigerant steaming
Vapour, is sent in the outer pipeline of cabinet；
2) high temperature in the outer pipeline of cabinet, high pressure refrigerant vapor, after cabinet external heat exchanger heat release cooling, eventually become often
Warm liquid；
3) after room temperature liquid refrigerant body is by capillary, into cabinet in pipeline, due to the throttling action of capillary, part
Liquid refrigerant is vaporized because of low pressure.Since vaporescence need to absorb heat of vaporization, thus the gas of low temperature is formed in pipeline in cabinet
Liquid mixture；
4) gas-liquid mixture of low temperature absorbs heat in cabinet through heat exchanger in cabinet, reduces in-cabinet temperature, realizes active refrigeration
While, become low-temperature refrigerant steam, sucked again by compressor, carry out the work of subsequent cycle.
In this cyclic process, heat is constantly through heat exchanger transfer in cabinet to refrigerant in cabinet；It is recycled to outside cabinet, passes through
External heat exchanger sheds.Become low temperature when refrigerant is in cabinet, can preferably absorb heat；And become high temperature during to outside cabinet, can be more
Heat release well.Cycle operation by this way, on one's own initiative passes to heat outside cabinet out of cabinet, or even can realize that in-cabinet temperature is less than
Environment temperature outside cabinet.
In another embodiment, when cabinet internal and external temperature is larger（Internal temperature is high）, can be pasted in air -return duct
Wall installs heat exchanger additional, makes full use of cabinet wall to radiate.Air -return duct heat exchanger, will reduce the obstruction to air-flow in structure, can select
Common and shape material, Fig. 2 show a kind of possible heat exchanger cross-sectional view.
In another embodiment, on the basis of positive pressure cabinet basic structure, increased cinclides, it is relatively close in guarantee
On the premise of envelope, circulation line is carried out the inside and outside cycle operation of cabinet, heat band is offerd for sale outer.Connect the pipeline inside and outside cabinet
Cross cinclides with normally thread to cross wall pore structure identical, it is identical that pore size and sealing means with cable cross cinclides.Designing
During cinclides quantity, to consider that pipeline takes 2 and crosses cinclides, prevent from omitting.
In another embodiment, the multi-cavities such as working chamber, circulation air path are divided in cabinet, form internal gas flow circulation
System, realizes the uniform cooling of different piece in cabinet.
In another embodiment, the cabinet inner cavity that air inlet, exhaust outlet in cabinet chamber air exchange system are arranged in is diagonal
Position.Cabinet inner cavity is passed air through, while takes into account the exchange of the air-flow in air -return duct.Its principle is：Through ventilation after a while
Afterwards, all air in cabinet are made all fully to take a breath, it is impossible to stay dead angle.Cabinet inner cavity diagonal position in Fig. 1, is exactly a kind of feasible cloth
Put.Inlet and outlet require identical with usual positive pressure cabinet.
A kind of active cooling method of explosion-proof positive pressure cabinet, when work, comprise the following steps：Ventilatory pattern and operational mode.
Ventilatory pattern, refers to after carrying out enabling maintenance to positive pressure cabinet, the preparation before working normally again.It is mainly made
It is usually air instead from the safe gas being filled with into institute's mouth with being fully to discharge the dangerous gas in cabinet.
In gas scavenging period, it need to meet to provide using information such as the pressure in explosion-proof monitoring system monitoring positive pressure cabinet
Ventilation terminates after condition, closes exhaust outlet, and air inlet continues air inlet, it is exterior in atmospheric pressure to ensure that the pressure in cabinet is more than, then
Powered on again to positive pressure cabinet.
Operational mode, is the normal mode of operation of positive pressure cabinet, and at this moment positive pressure cabinet provides safety to internal electrical system
Working environment.It is main to include being controlled positive pressure cabinet into trip temperature, pressure etc..
To positive pressure cabinet, after the power is turned on, the active cooling systems in positive pressure cabinet, and other circuits in cabinet could work.This
When with cabinet other elements workpiece generate heat, cause in-cabinet temperature to raise, at this moment active cooling systems to in-cabinet temperature carry out
Automatic adjustment：When temperature is higher than setting value, in compressor start in active cooling systems, start to cooling down in cabinet；When
When temperature is less than certain value, compressor is stopped；In this process, the internal circulatory system works always, to keep in cabinet
Temperature is uniform.
Claims (9)
1. a kind of explosion-proof positive pressure cabinet of active cooling with air -return duct, including cabinet chamber air exchange system, Active Cooling System, interior follow
Loop system and cooling control system, it is characterised in that the internal circulation system include axial flow blower, positive pressure cabinet chamber, air -return duct and
Guiding device；The air -return duct is arranged in positive pressure cabinet arranged on left and right sides, pastes the flat distribution of side wall, and the internal circulation system is working
When, cabinet interior air-flow is formed since wind turbine mouth, through inner cavity, air -return duct, deflector, heat exchange under the driving of axial flow blower
Device, then the circulating current to wind turbine mouth.
A kind of 2. explosion-proof positive pressure cabinet of active cooling with air -return duct as claimed in claim 1, it is characterised in that the water conservancy diversion
Device is deflector.
3. the explosion-proof positive pressure cabinet of a kind of active cooling with air -return duct as claimed in claim 1, it is characterised in that in air -return duct
Interior installation heat exchanger.
A kind of 4. explosion-proof positive pressure cabinet of active cooling with air -return duct as described in above-mentioned any claim, it is characterised in that
Working chamber and circulation air path are divided in cabinet.
A kind of 5. explosion-proof positive pressure cabinet of active cooling with air -return duct as claimed in claim 1, it is characterised in that the cabinet chamber
Air exchange system includes cabinet, inlet channel, exhaust passage and intake and exhaust control section.
6. the explosion-proof positive pressure cabinet of a kind of active cooling with air -return duct as claimed in claim 1, it is characterised in that cabinet chamber is taken a breath
The cabinet inner cavity diagonal position that air inlet, exhaust outlet in system are arranged in.
A kind of 7. explosion-proof positive pressure cabinet of active cooling with air -return duct as claimed in claim 1, it is characterised in that the active
Cooling system includes the outer heat rejecting heat exchanger of compressor, refrigerant circulation line, cabinet inner heat adsorption type heat exchanger, cabinet and correlation
Control circuit.
A kind of 8. explosion-proof positive pressure cabinet of active cooling with air -return duct as claimed in claim 7, it is characterised in that the refrigeration
Agent circulation line includes circulation pipe, capillary and drier.
9. the explosion-proof positive pressure cabinet of a kind of active cooling with air -return duct as claimed in claim 1, it is characterised in that in positive pressure cabinet
On cinclides was set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721159932.6U CN207369499U (en) | 2017-09-12 | 2017-09-12 | A kind of explosion-proof positive pressure cabinet of active cooling with air -return duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721159932.6U CN207369499U (en) | 2017-09-12 | 2017-09-12 | A kind of explosion-proof positive pressure cabinet of active cooling with air -return duct |
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| Publication Number | Publication Date |
|---|---|
| CN207369499U true CN207369499U (en) | 2018-05-15 |
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ID=62352204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721159932.6U Active CN207369499U (en) | 2017-09-12 | 2017-09-12 | A kind of explosion-proof positive pressure cabinet of active cooling with air -return duct |
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|---|---|
| CN (1) | CN207369499U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107509369A (en) * | 2017-09-12 | 2017-12-22 | 长春北方化工灌装设备股份有限公司 | Explosion-proof malleation cabinet and active cooling method based on Active Cooling |
| CN110412542A (en) * | 2019-08-23 | 2019-11-05 | 上海禾赛光电科技有限公司 | Laser radar and its radiator |
-
2017
- 2017-09-12 CN CN201721159932.6U patent/CN207369499U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107509369A (en) * | 2017-09-12 | 2017-12-22 | 长春北方化工灌装设备股份有限公司 | Explosion-proof malleation cabinet and active cooling method based on Active Cooling |
| CN110412542A (en) * | 2019-08-23 | 2019-11-05 | 上海禾赛光电科技有限公司 | Laser radar and its radiator |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 130012 No. 177, Software 3 Road, Changchun High-tech Development Zone, Jilin Province Co-patentee after: CHANGCHUN LANZHOU TECHNOLOGY Co.,Ltd. Patentee after: Changchun Rongcheng Intelligent Equipment Manufacturing Co.,Ltd. Co-patentee after: CHANGCHUN ZHIHE INTELLIGENT PACKAGING EQUIPMENT Co.,Ltd. Address before: 130012 No. 177, Software 3 Road, Changchun High-tech Development Zone, Jilin Province Co-patentee before: CHANGCHUN LANZHOU TECHNOLOGY Co.,Ltd. Patentee before: CHANGCHUN NORTHERN CHEMICAL FILLING EQUIPMENT Co.,Ltd. Co-patentee before: CHANGCHUN ZHIHE INTELLIGENT PACKAGING EQUIPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221130 Address after: 130102 No. 3088, Zhongsheng Road, Beihu science and Technology Development Zone, Changchun City, Jilin Province Patentee after: Changchun Rongcheng Intelligent Equipment Manufacturing Co.,Ltd. Patentee after: CHANGCHUN LANZHOU TECHNOLOGY Co.,Ltd. Address before: 130012 177 software 3 Road, hi tech Development Zone, Changchun, Jilin Patentee before: Changchun Rongcheng Intelligent Equipment Manufacturing Co.,Ltd. Patentee before: CHANGCHUN LANZHOU TECHNOLOGY Co.,Ltd. Patentee before: CHANGCHUN ZHIHE INTELLIGENT PACKAGING EQUIPMENT Co.,Ltd. |