CN102954012A - Frequency conversion control circuit of forced and induced draft fan - Google Patents
Frequency conversion control circuit of forced and induced draft fan Download PDFInfo
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- CN102954012A CN102954012A CN2011102423312A CN201110242331A CN102954012A CN 102954012 A CN102954012 A CN 102954012A CN 2011102423312 A CN2011102423312 A CN 2011102423312A CN 201110242331 A CN201110242331 A CN 201110242331A CN 102954012 A CN102954012 A CN 102954012A
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- frequency variator
- induced draft
- control circuit
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 abstract description 4
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
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- 159000000007 calcium salts Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
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- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
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Abstract
The invention relates to a frequency conversion control circuit of a forced and induced draft fan. The frequency conversion control circuit comprises a forced draft motor M3, an induced draft motor M5, a frequency converter 1P and a frequency converter 2P, pins R, S and T of the frequency converter 1P are connected to three phases L11, L12 and L13 respectively through a circuit breaker 8ZK, pins R, S and T of the frequency converter 2P are connected to the three phases L11, L12 and L13 respectively through a circuit breaker 9ZK, pins U, V and W of the frequency converter 1P are connected into pins U1, V1 and W1 of the induced draft motor M5 respectively through a contactor 1C and are connected into pins W2, U2 and V2 of the induced draft motor M5 respectively through a contactor 2C, and pins U, V and W of the frequency converter 2P are connected into three-phase input ends of the forced draft motor M3. The frequency conversion control circuit is simple in structure, safe and practical, the forced draft motor and the induced draft motor are stable in operation by the aid of the frequency converters, and accordingly energy consumption is reduced, production efficiency is improved, the service lives of the forced draft motor and the induced draft motor are prolonged, and cost of enterprises is lowered.
Description
Technical field
The present invention relates to a kind of circuit, relate in particular to a kind of forced-and-induced draft fan frequency conversion control circuit.
Background technique
Expandable polystyrene (EPS) is the mixture of a kind of resin and physical foaming agent and other additive, can be widely used in the packaging container of various electronic product amortizing packaging materials, agricultural fishery, heat preserving and insulating material for building.Expandable polystyrene adopts vinyl benzene, emulsifier and dispersing agent to make after the operations such as low temperature polymerization, aeration, high temperature polymerization in the reactor of jacket steam coil pipe usually.Wherein polymerization is to utilize organic dispersing agent or inorganic dispersant, and water-fast liquid monomer together with the initator process strong agitation that is dissolved in the monomer, is broken into little pearl, and being dispersed in water becomes suspension, produces reaction in superfine unit globule liquid.Since prepared expandable polystyrene adsorption calcium salt easily get damp, it is inserted washing tank, then carry out solid-liquid separation, final drying packed products.Polymerisation in reactor needs high temperature, by fire coal to the burning in boiler water generates steam, because fuel combustion is insufficient, the deslagging carbon content is large, the smoke evacuation dust concentration is high, the flue gas of coal-fired manufacturing need to be carried out alkaline moisture film desulfurization and dedusting by flue, by forced-and-induced draft fan flue gas is discharged outside chimney from flue again, blower motor or blower motor when start and stop since voltage and frequency can not be in proportion change, easily cause magnetic loop saturated, power consumption is serious, fluctuation of service, can burn blower motor or blower motor when serious, increase the cost of production of enterprise.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and a kind of simple in structure, safe and practical forced-and-induced draft fan frequency conversion control circuit is provided.
For achieving the above object, the technical solution used in the present invention is: a kind of forced-and-induced draft fan frequency conversion control circuit, comprise blower motor M3, blower motor M5, also be provided with frequency variator 1P, frequency variator 2P, described frequency variator 1P, the pin R of frequency variator 2P, S, T is respectively by circuit breaker 8ZK, 9ZK connects the three-phase L11 of power supply, L12, L13, the pin U of frequency variator 1P, V, W accesses respectively the U1 of blower motor M5 by contactor 1C, V1, W1, the pin U of frequency variator 1P, V, W accesses respectively the W2 of blower motor M5 by contactor 2C, U2, V2, the pin U of frequency variator 2P, V, W accesses respectively the three-phase input end of blower motor M5.
In a preferred embodiment of the present invention, the forced-and-induced draft fan frequency conversion control circuit comprises that further 10V voltage end, VS pin, the GND grounding end of described frequency variator 1P are connected on the speed adjusting resistance 7R, the M1 of described frequency variator 1P, GND pin are connected on the frequency meter 7H, and the RUN of described frequency variator 1P, RST pin are connected on the COM pin by switch 14C, button 7FA respectively.
In a preferred embodiment of the present invention, the forced-and-induced draft fan frequency conversion control circuit comprises that further the L12 of described power supply is serially connected with current transformer PT1 mutually, and described current transformer PT1 is connected with an ammeter PA1.
In a preferred embodiment of the present invention, the forced-and-induced draft fan frequency conversion control circuit further comprises on the pin C of described frequency variator 1P and is connected with auxiliary reclay KA10.
In a preferred embodiment of the present invention, the forced-and-induced draft fan frequency conversion control circuit comprises that further 10V voltage end, VS pin, the grounding end GND of described frequency variator 2P are connected on the speed adjusting resistance 8R, the M1 of described frequency variator 2P, GND pin are connected on the frequency meter 8H, and the RUN of described frequency variator 2P, RST pin are connected on the COM pin by switch 18C, button 8FA respectively.
In a preferred embodiment of the present invention, the forced-and-induced draft fan frequency conversion control circuit further comprises on the pin C of described frequency variator 2P and is connected with tutorial light HD8.
The invention solves the defective that exists in the background technique, the present invention is simple in structure, safe and practical, adopts frequency variator to make blower motor, blower motor stable, saved energy consumption, improve manufacturing efficiency, prolonged the life-span of blower motor, blower motor, reduced the cost of enterprise.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the circuit theory diagrams of the preferred embodiments of the present invention.
Embodiment
The present invention is further detailed explanation in conjunction with the accompanying drawings and embodiments now, and these accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only shows the formation relevant with the present invention.
As shown in Figure 1, a kind of forced-and-induced draft fan frequency conversion control circuit, comprise blower motor M3, blower motor M5, also be provided with frequency variator 1P, frequency variator 2P, described frequency variator 1P, the pin R of frequency variator 2P, S, T is respectively by circuit breaker 8ZK, 9ZK connects the three-phase L11 of power supply, L12, L13, because the power of blower motor M5 is greater than the frequency of blower motor M3, the pin U of frequency variator 1P, V, W accesses respectively the U1 of blower motor M5 by contactor 1C, V1, W1, the pin U of frequency variator 1P, V, W accesses respectively the W2 of blower motor M5 by contactor 2C, U2, V2, voltage starting falls in realization, the pin U of frequency variator 2P, V, W accesses respectively the three-phase input end of blower motor M5.
The 10V voltage end of the preferred described frequency variator 1P of the present invention, VS pin, GND grounding end are connected on the speed adjusting resistance 7R, can regulate the speed of blower motor M5, make it stable, the M1 of described frequency variator 1P, GND pin are connected on the frequency meter 7H, the frequency that can show blower motor M5, the RUN of described frequency variator 1P, RST pin are connected on the COM pin by switch 14C, button 7FA respectively, realize resetting, and return to initial state.
Further, the L12 of described power supply is serially connected with current transformer PT1 mutually, and described current transformer PT1 is connected with an ammeter PA1, large current transitions can be become little electric current, avoid blower motor M5 to burn because electric current is excessive, show numerical value by ammeter PA1 simultaneously, more directly perceived.
Further, be connected with auxiliary reclay KA10 on the pin C of described frequency variator 1P, be convenient to observe.
The 10V voltage end of the preferred described frequency variator 2P of the present invention, VS pin, grounding end GND are connected on the speed adjusting resistance 8R, can regulate the speed of blower motor M3, make it stable, the M1 of described frequency variator 2P, GND pin are connected on the frequency meter 8H, but the frequency of Display Drum wind turbine M3, the RUN of described frequency variator 2P, RST pin are connected on the COM pin by switch 18C, button 8FA respectively, realize resetting, and return to initial state.Be connected with tutorial light HD8 on the pin C of described frequency variator 2P, be used to indicate the running state of blower motor M3.
Above foundation desirable embodiment of the present invention is enlightenment, and by above-mentioned description, the related personnel can in the scope that does not depart from this invention technological thought, carry out various change and modification fully.The technical scope of this invention is not limited to the content on the specification, must determine technical scope according to the claim scope.
Claims (6)
1. forced-and-induced draft fan frequency conversion control circuit, comprise blower motor M3, blower motor M5, it is characterized in that: also be provided with frequency variator 1P, frequency variator 2P, described frequency variator 1P, the pin R of frequency variator 2P, S, T is respectively by circuit breaker 8ZK, 9ZK connects the three-phase L11 of power supply, L12, L13, the pin U of frequency variator 1P, V, W accesses respectively the U1 of blower motor M5 by contactor 1C, V1, W1, the pin U of frequency variator 1P, V, W accesses respectively the W2 of blower motor M5 by contactor 2C, U2, V2, the pin U of frequency variator 2P, V, W accesses respectively the three-phase input end of blower motor M5.
2. forced-and-induced draft fan frequency conversion control circuit according to claim 1, it is characterized in that: the 10V voltage end of described frequency variator 1P, VS pin, GND grounding end are connected on the speed adjusting resistance 7R, the M1 of described frequency variator 1P, GND pin are connected on the frequency meter 7H, and the RUN of described frequency variator 1P, RST pin are connected on the COM pin by switch 14C, button 7FA respectively.
3. forced-and-induced draft fan frequency conversion control circuit according to claim 1, it is characterized in that: the L12 of described power supply is serially connected with current transformer PT1 mutually, and described current transformer PT1 is connected with an ammeter PA1.
4. forced-and-induced draft fan frequency conversion control circuit according to claim 1 is characterized in that: be connected with auxiliary reclay KA10 on the pin C of described frequency variator 1P.
5. forced-and-induced draft fan frequency conversion control circuit according to claim 1, it is characterized in that: the 10V voltage end of described frequency variator 2P, VS pin, grounding end GND are connected on the speed adjusting resistance 8R, the M1 of described frequency variator 2P, GND pin are connected on the frequency meter 8H, and the RUN of described frequency variator 2P, RST pin are connected on the COM pin by switch 18C, button 8FA respectively.
6. forced-and-induced draft fan frequency conversion control circuit according to claim 1 is characterized in that: be connected with tutorial light HD8 on the pin C of described frequency variator 2P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102423312A CN102954012A (en) | 2011-08-23 | 2011-08-23 | Frequency conversion control circuit of forced and induced draft fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102423312A CN102954012A (en) | 2011-08-23 | 2011-08-23 | Frequency conversion control circuit of forced and induced draft fan |
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| Publication Number | Publication Date |
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| CN102954012A true CN102954012A (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102423312A Pending CN102954012A (en) | 2011-08-23 | 2011-08-23 | Frequency conversion control circuit of forced and induced draft fan |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06269173A (en) * | 1993-01-13 | 1994-09-22 | Toshiba Corp | Frequency converter |
| CN200986215Y (en) * | 2006-12-07 | 2007-12-05 | 徐卫东 | Energy-saving boiler of shaped machine |
| CN201608688U (en) * | 2009-12-30 | 2010-10-13 | 青岛斑科变频技术有限公司 | Short-circuit prevention frequency conversion control circuit |
| CN101893228A (en) * | 2009-05-19 | 2010-11-24 | 北京高和华泰节能环保科技有限公司 | Circuit of intelligent power saving device for heating boiler system |
| CN201774497U (en) * | 2010-08-11 | 2011-03-23 | 安徽源海丝业有限责任公司 | Electrical control system for boiler induced-draft fan |
| CN201860293U (en) * | 2010-08-30 | 2011-06-08 | 东营正欣时代节能技术有限公司 | Frequency conversion speed adjustment control device of an oil sucking machine |
| CN202168033U (en) * | 2011-08-23 | 2012-03-14 | 苏州常乐泡塑有限公司 | Frequency conversion control circuit of forced and induced draft fan |
-
2011
- 2011-08-23 CN CN2011102423312A patent/CN102954012A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06269173A (en) * | 1993-01-13 | 1994-09-22 | Toshiba Corp | Frequency converter |
| CN200986215Y (en) * | 2006-12-07 | 2007-12-05 | 徐卫东 | Energy-saving boiler of shaped machine |
| CN101893228A (en) * | 2009-05-19 | 2010-11-24 | 北京高和华泰节能环保科技有限公司 | Circuit of intelligent power saving device for heating boiler system |
| CN201608688U (en) * | 2009-12-30 | 2010-10-13 | 青岛斑科变频技术有限公司 | Short-circuit prevention frequency conversion control circuit |
| CN201774497U (en) * | 2010-08-11 | 2011-03-23 | 安徽源海丝业有限责任公司 | Electrical control system for boiler induced-draft fan |
| CN201860293U (en) * | 2010-08-30 | 2011-06-08 | 东营正欣时代节能技术有限公司 | Frequency conversion speed adjustment control device of an oil sucking machine |
| CN202168033U (en) * | 2011-08-23 | 2012-03-14 | 苏州常乐泡塑有限公司 | Frequency conversion control circuit of forced and induced draft fan |
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Application publication date: 20130306 |