CN202168033U - Frequency conversion control circuit of forced and induced draft fan - Google Patents
Frequency conversion control circuit of forced and induced draft fan Download PDFInfo
- Publication number
- CN202168033U CN202168033U CN2011203077971U CN201120307797U CN202168033U CN 202168033 U CN202168033 U CN 202168033U CN 2011203077971 U CN2011203077971 U CN 2011203077971U CN 201120307797 U CN201120307797 U CN 201120307797U CN 202168033 U CN202168033 U CN 202168033U
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- frequency converter
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- induced draft
- forced
- control circuit
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The utility model relates to a frequency conversion control circuit of a forced and induced draft fan, which comprises a forced draft motor M3, an induced draft motor M5 and further comprises a frequency converter 1P and a frequency converter 2P. Pins R, S and T of the frequency converter 1P and the frequency converter 2P are connected with three phases L11, L12 and L13 of a power supply through breakers 8 ZK and 9 ZK respectively. Pins U, V and W of the frequency converter 1P are connected with U1, U2 and U3 of the induced draft motor M5 through a contactor 1C respectively. The pins U, V and W of the frequency converter 1P are connected with W2, U2 and V2 of the induced draft motor M5 through a contactor 2C respectively. Pins of the frequency converter 2P are connected with a three-phase input end of the induced draft motor M5 respectively. The frequency conversion control circuit of the forced and induced draft fan is simple in structure and safe and practical, adopts the frequency converter to enable the forced draft motor and the induced draft motor to operate stably, saves energy loss, improves production efficiency, prolongs service life of the forced draft motor and the induced draft motor, and reduces cost of enterprises.
Description
Technical field
The utility model relates to a kind of circuit, relates in particular to a kind of forced-and-induced draft fan frequency conversion control circuit.
Background technology
Expandable polystyrene (EPS) is the mixture of a kind of resin and physical foaming agent and other additive, can be widely used in the packing container of various electronic product amortizing packaging materials, agricultural fishery, heat preserving and insulating material for building.Expandable polystyrene adopts styrene, emulsifying agent and dispersant in the agitated reactor that has the jacket steam coil pipe, after operations such as low temperature polymerization, aeration, high temperature polymerization, to make usually.Wherein polymerization is to utilize organic dispersing agent or inorganic dispersant, together with the initator process strong agitation that is dissolved in the monomer, is broken into little pearl to water-fast liquid monomer, and being dispersed in becomes suspension in the water, in superfine unit globule liquid, produce reaction.Since prepared expandable polystyrene surface adsorption calcium salt get damp easily, it is inserted sink, then carry out Separation of Solid and Liquid, final drying packed products.Polymerization reaction in agitated reactor needs high temperature; To the burning in boiler water generates steam,, need the flue gas of coal-fired manufacturing be carried out alkaline moisture film desulfurization and dedusting through flue through fire coal because fuel combustion is insufficient, the deslagging phosphorus content is big, the smoke evacuation dust content is high; Through 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, cause magnetic loop saturated easily, power consumption seriously, fluctuation of service; Can burn blower motor or blower motor when serious, increase the production cost of enterprise.
Summary of the invention
The utility model has overcome the deficiency of 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 scheme that the utility model adopts 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 converter 1P, frequency converter 2P, the pin R of said frequency converter 1P, frequency converter 2P, S, T connect three-phase L11, L12, the L13 of power supply respectively through circuit breaker 8ZK, 9ZK, and the pin U of frequency converter 1P, V, W insert U1, V1, the W1 of blower motor M5 respectively through contactor 1C; The pin U of frequency converter 1P, V, W insert W2, U2, the V2 of blower motor M5 respectively through contactor 2C, and the pin U of frequency converter 2P, V, W insert the three-phase input end of blower motor M5 respectively.
In preferred embodiment of the utility model; The forced-and-induced draft fan frequency conversion control circuit comprises that further 10V voltage end, VS pin, the GND earth terminal of said frequency converter 1P are connected on the speed adjusting resistance 7R; The M1 of said frequency converter 1P, GND pin are connected on the frequency meter 7H, and the RUN of said frequency converter 1P, RST pin are connected on the COM pin through switch 14C, button 7FA respectively.
In preferred embodiment of the utility model, the forced-and-induced draft fan frequency conversion control circuit comprises that further the L12 of said power supply is serially connected with current transformer PT1 mutually, and said current transformer PT1 is connected with an ammeter PA1.
In preferred embodiment of the utility model, the forced-and-induced draft fan frequency conversion control circuit further comprises on the pin C of said frequency converter 1P and is connected with auxiliary relay KA10.
In preferred embodiment of the utility model; The forced-and-induced draft fan frequency conversion control circuit comprises that further 10V voltage end, VS pin, the earth terminal GND of said frequency converter 2P are connected on the speed adjusting resistance 8R; The M1 of said frequency converter 2P, GND pin are connected on the frequency meter 8H, and the RUN of said frequency converter 2P, RST pin are connected on the COM pin through switch 18C, button 8FA respectively.
In preferred embodiment of the utility model, the forced-and-induced draft fan frequency conversion control circuit further comprises on the pin C of said frequency converter 2P and is connected with indicator light HD8.
The utility model has solved the defective that exists in the background technology; The utility model is simple in structure, safe and practical; Adopt frequency converter to make blower motor, blower motor stable, saved energy consumption, improved production efficiency; Prolong the life-span of blower motor, blower motor, reduced the cost of enterprise.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the circuit theory diagrams of the preferred embodiment of the utility model.
Embodiment
Combine accompanying drawing and embodiment that the utility model is done further detailed explanation now, these accompanying drawings are the sketch map of simplification, the basic structure of the utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
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 converter 1P, frequency converter 2P, the pin R of said frequency converter 1P, frequency converter 2P, S, T connect three-phase L11, L12, the L13 of power supply respectively through circuit breaker 8ZK, 9ZK, because the power of blower motor M5 is greater than the frequency of blower motor M3; The pin U of frequency converter 1P, V, W insert U1, V1, the W1 of blower motor M5 respectively through contactor 1C; The pin U of frequency converter 1P, V, W insert W2, U2, the V2 of blower motor M5 respectively through contactor 2C, realize falling voltage starting, and the pin U of frequency converter 2P, V, W insert the three-phase input end of blower motor M5 respectively.
The 10V voltage end of the preferred said frequency converter 1P of the utility model, VS pin, GND earth terminal are connected on the speed adjusting resistance 7R; The speed of scalable blower motor M5 makes it stable, and the M1 of said frequency converter 1P, GND pin are connected on the frequency meter 7H; The frequency that can show blower motor M5; The RUN of said frequency converter 1P, RST pin are connected on the COM pin through switch 14C, button 7FA respectively, realize resetting, and return to initial state.
Further, the L12 of said power supply is serially connected with current transformer PT1 mutually, and said current transformer PT1 is connected with an ammeter PA1; Can big current transitions be become little electric current; Avoid blower motor M5 to burn, show numerical value by ammeter PA1 simultaneously because of electric current is excessive, more directly perceived.
Further, be connected with auxiliary relay KA10 on the pin C of said frequency converter 1P, be convenient to observe.
The 10V voltage end of the preferred said frequency converter 2P of the utility model, VS pin, earth terminal GND are connected on the speed adjusting resistance 8R; The speed of scalable blower motor M3 makes it stable, and the M1 of said frequency converter 2P, GND pin are connected on the frequency meter 8H; The frequency that can show blower motor M3; The RUN of said frequency converter 2P, RST pin are connected on the COM pin through switch 18C, button 8FA respectively, realize resetting, and return to initial state.Be connected with indicator light HD8 on the pin C of said frequency converter 2P, be used to indicate the running status of blower motor M3.
Above desirable embodiment according to the utility model is enlightenment, and through above-mentioned description, the related personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification, must confirm 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 converter 1P, frequency converter 2P; The pin R of said frequency converter 1P, frequency converter 2P, S, T connect three-phase L11, L12, the L13 of power supply respectively through circuit breaker 8ZK, 9ZK; The pin U of frequency converter 1P, V, W insert U1, V1, the W1 of blower motor M5 respectively through contactor 1C, and the pin U of frequency converter 1P, V, W insert W2, U2, the V2 of blower motor M5 respectively through contactor 2C, and the pin U of frequency converter 2P, V, W insert the three-phase input end of blower motor M5 respectively.
2. forced-and-induced draft fan frequency conversion control circuit according to claim 1; It is characterized in that: the 10V voltage end of said frequency converter 1P, VS pin, GND earth terminal are connected on the speed adjusting resistance 7R; The M1 of said frequency converter 1P, GND pin are connected on the frequency meter 7H, and the RUN of said frequency converter 1P, RST pin are connected on the COM pin through switch 14C, button 7FA respectively.
3. forced-and-induced draft fan frequency conversion control circuit according to claim 1 is characterized in that: the L12 of said power supply is serially connected with current transformer PT1 mutually, and said 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 relay KA10 on the pin C of said frequency converter 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 said frequency converter 2P, VS pin, earth terminal GND are connected on the speed adjusting resistance 8R; The M1 of said frequency converter 2P, GND pin are connected on the frequency meter 8H, and the RUN of said frequency converter 2P, RST pin are connected on the COM pin through 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 indicator light HD8 on the pin C of said frequency converter 2P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203077971U CN202168033U (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 |
|---|---|---|---|
| CN2011203077971U CN202168033U (en) | 2011-08-23 | 2011-08-23 | Frequency conversion control circuit of forced and induced draft fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202168033U true CN202168033U (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203077971U Expired - Fee Related CN202168033U (en) | 2011-08-23 | 2011-08-23 | Frequency conversion control circuit of forced and induced draft fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202168033U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954012A (en) * | 2011-08-23 | 2013-03-06 | 苏州常乐泡塑有限公司 | Frequency conversion control circuit of forced and induced draft fan |
| CN104485857A (en) * | 2014-08-21 | 2015-04-01 | 株洲南车时代电气股份有限公司 | Blower fan speed regulation circuit, method, system and application |
-
2011
- 2011-08-23 CN CN2011203077971U patent/CN202168033U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954012A (en) * | 2011-08-23 | 2013-03-06 | 苏州常乐泡塑有限公司 | Frequency conversion control circuit of forced and induced draft fan |
| CN104485857A (en) * | 2014-08-21 | 2015-04-01 | 株洲南车时代电气股份有限公司 | Blower fan speed regulation circuit, method, system and application |
| CN104485857B (en) * | 2014-08-21 | 2017-09-15 | 株洲中车时代电气股份有限公司 | A kind of fan speed regulating circuit, method, system and its application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20140823 |
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| EXPY | Termination of patent right or utility model |