CN215980064U - Energy-saving device of desulfurization oxidation fan - Google Patents
Energy-saving device of desulfurization oxidation fan Download PDFInfo
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- CN215980064U CN215980064U CN202122529876.3U CN202122529876U CN215980064U CN 215980064 U CN215980064 U CN 215980064U CN 202122529876 U CN202122529876 U CN 202122529876U CN 215980064 U CN215980064 U CN 215980064U
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Abstract
The utility model belongs to the technical field of fan equipment's technique and specifically relates to a desulfurization oxidation fan economizer is related to, and it includes including desulfurization oxidation fan and fan case, desulfurization oxidation fan sets up in the fan case, still includes the intelligent regulation circuit who is used for intelligent regulation desulfurization oxidation fan wind speed, and intelligent regulation circuit includes: the detection circuit is used for detecting the concentration of the smoke to output a detection signal; the comparison circuit is connected with the detection circuit to receive the detection signal and output a comparison signal; the gear circuit is connected with the comparison circuit to receive the comparison signal and output a corresponding gear signal according to the comparison signal; the control circuit is connected with the gear circuit to receive the gear signal and output a corresponding control signal according to the gear signal; the desulfurization oxidation fan is connected with the control circuit to receive the control signal and adjust the wind speed correspondingly according to the control signal. The application has the effect of improving the working efficiency of the desulfurization oxidation fan to achieve energy conservation.
Description
Technical Field
The application relates to the technical field of fan equipment, in particular to a desulfurization oxidation fan energy-saving device.
Background
Due to the lack of experience and technology accumulation in type selection and manufacturing of desulfurization equipment in China, the problems of unreasonable type selection, equipment quality failure and the like exist in different degrees in desulfurization projects from royal uphill several years ago, and the problems are gradually exposed in the years, so that the desulfurization oxidation fans of power plants are frequently overhauled and replaced.
The desulfurization oxidation fan in the correlation technique sets up in the fan case, is provided with two intermeshing's rotors on the desulfurization oxidation fan, and the rotor rotates, and the air around the rotor removes thereupon, realizes the pumping to the air to carry the air after the oxidation to the reaction tank in, the air reacts with the flue gas in the reaction tank, in order to realize the desulfurization to the flue gas.
When carrying out desulfurization work, when the flue gas concentration in the reaction tank changes, desulfurization oxidation fan among the above-mentioned correlation technique can't adjust the wind speed to reduce desulfurization oxidation fan's work efficiency, cause the waste of energy consumption.
SUMMERY OF THE UTILITY MODEL
In order to improve desulfurization oxidation fan's work efficiency in order to reach energy-conserving effect, this application provides a desulfurization oxidation fan economizer.
The application provides a desulfurization oxidation fan economizer adopts following technical scheme:
the utility model provides a desulfurization oxidation fan economizer, includes desulfurization oxidation fan and fan case, desulfurization oxidation fan sets up in the fan case, still includes the intelligent regulation circuit that is used for intelligent regulation desulfurization oxidation fan wind speed, intelligent regulation circuit sets up in the fan case, intelligent regulation circuit includes:
the detection circuit is used for detecting the concentration of the smoke to output a detection signal;
the comparison circuit is connected with the detection circuit to receive the detection signal, and compares the detection signal with a preset value signal to output a comparison signal;
the gear circuit is connected with the comparison circuit to receive the comparison signal and output a corresponding gear signal according to the comparison signal;
the control circuit is connected with the gear circuit to receive the gear signal and output a corresponding control signal according to the gear signal;
and the desulfurization oxidation fan is connected to the control circuit to receive the control signal and carry out corresponding wind speed regulation according to the control signal.
By adopting the technical scheme, the detection circuit detects the content of the flue gas in the reaction tank and outputs a corresponding detection signal, the comparison circuit receives the detection signal and then compares the detection signal with a preset value signal, corresponding comparison signals are output according to different detection signals, the gear circuit receives the comparison signals and outputs corresponding gear signals according to the comparison signals, the control circuit receives the gear signals and outputs corresponding control signals according to different gear signals, and the desulfurization oxidation fan receives the control signals and starts to operate; when the flue gas concentration in the reaction tank is lower, the air speed of the desulfurization oxidation fan is low, and when the flue gas concentration is high, the air speed of the desulfurization oxidation fan is increased, so that the flue gas concentration and the air speed of the desulfurization oxidation fan reach a linear relation, and the working efficiency of the desulfurization oxidation fan is improved to achieve an energy-saving effect.
Preferably, the comparison circuit includes a first comparison circuit, a second comparison circuit and a third comparison circuit,
one end of the first comparison circuit is connected to the detection circuit to receive the detection signal and compare the detection signal with the lower limit preset value signal, and the other end of the first comparison circuit is connected to the gear circuit to output a first comparison signal;
one end of the second comparison circuit is connected to the detection circuit to receive the detection signal and compare the detection signal with the upper limit preset value signal, and the other end of the second comparison circuit is connected to the gear circuit to output a second comparison signal;
one input end of the third comparison circuit is connected with the first comparison circuit to receive the first comparison signal, the other input end of the third comparison circuit is connected with the second comparison circuit to receive the second comparison signal, and the output end of the third comparison circuit is connected with the gear circuit and outputs a corresponding third comparison signal according to the first comparison signal and the second comparison signal;
the comparison signals include a first comparison signal, a second comparison signal, and a third comparison signal.
By adopting the technical scheme, the first comparison circuit compares the detection signal with the lower limit preset value signal and outputs a relative first comparison signal, the second comparison circuit compares the detection signal with the upper limit preset value signal and outputs a relative second comparison signal, and the third comparison circuit receives the first comparison signal and the second comparison signal and outputs a relative third comparison signal, so that three conditions that the detection signal is smaller than the lower limit preset value signal, the detection signal is larger than the upper limit preset value signal and the detection signal is larger than the lower limit preset value signal and smaller than the upper limit preset value signal are divided.
Preferably, the first comparing circuit includes a first comparator U1, an inverting input terminal of the first comparator U1 is connected to the detecting circuit to receive the detection signal, a non-inverting input terminal of the first comparator U1 receives the lower limit preset value signal, the first comparator U1 compares the detection signal with the lower limit preset value signal, and an output terminal of the first comparator U1 is connected to the gear circuit to output a corresponding first comparing signal.
By adopting the above technical scheme, the first comparator U1 compares the comparison signal with the lower limit preset value signal, when the detection signal is greater than the lower limit preset value signal, the first comparison signal output by the first comparator U1 is at a low level, and when the detection signal is less than the lower limit preset value signal, the first comparison signal output by the first comparator U1 is at a high level.
Preferably, the second comparing circuit includes a second comparator U2, a same-direction input end of the second comparator U2 is connected to the detecting circuit to receive the detection signal, an opposite-direction input end of the second comparator U2 receives the upper limit preset value signal, the second comparator U2 compares the detection signal with the upper limit preset value signal, and an output end of the second comparator U2 is connected to the gear circuit to output a corresponding second comparison signal.
By adopting the above technical scheme, the second comparator U2 compares the comparison signal with the upper limit preset value signal, when the detection signal is greater than the lower limit preset value signal, the second comparison signal output by the second comparator U2 is at a high level, and when the detection signal is less than the upper limit preset value signal, the second comparison signal output by the second comparator U2 is at a low level.
Preferably, the third comparison circuit includes an and gate NOR, one input terminal of the and gate NOR is connected to the output terminal of the first comparator U1 to receive the first comparison signal, the other input terminal of the and gate NOR is connected to the output terminal of the second comparator U2 to receive the second comparison signal, the and gate NOR logically processes the first comparison signal and the second comparison signal, and the output terminal of the and gate NOR is connected to the shift position circuit to output the third comparison signal.
By adopting the above technical solution, one input terminal of the and-gate NOR is connected to the output terminal of the first comparator U1 to receive the first comparison signal, and the other input terminal of the and-gate NOR is connected to the output terminal of the second comparator U2 to receive the second comparison signal;
when the detection signal is smaller than the lower limit preset value signal, the first comparison signal is at a high level, the second comparison signal is at a low level, and a third comparison signal output by the NOR gate is at a low level;
when the detection signal is greater than the upper limit preset value signal, the first comparison signal is at a low level, the second comparison signal is at a high level, and a third comparison signal output by the NOR gate is at a low level;
when the detection signal is greater than the lower limit preset value signal and less than the upper line preset value signal, the first comparison signal is at a low level, the second comparison signal is at a low level, and a third comparison signal output by the or gate NOR is at a high level.
Preferably, the gear circuit comprises a first nonpolar capacitor C1, a second nonpolar capacitor C2 and a third nonpolar capacitor C3 which are connected in parallel,
one end of the first nonpolar capacitor C1 is connected to the output end of the first comparator U1 to receive the first comparison signal, and the other end of the first nonpolar capacitor C1 is connected to the control circuit to output the first gear signal;
one end of the second nonpolar capacitor C2 is connected to the output end of the second comparator U2 to receive the second comparison signal, and the other end of the second nonpolar capacitor C2 is connected to the control circuit to output the second clock signal;
one end of the third non-polar capacitor C3 is connected to the output end of the nand gate NOR for receiving the third comparison signal, and the other end of the third non-polar capacitor C3 is connected to the control circuit for outputting the third gear signal;
the gear signals comprise a first gear signal, a second gear signal and a third gear signal.
Through adopting above-mentioned technical scheme, first nonpolar electric capacity C1, second nonpolar electric capacity C2 and third nonpolar electric capacity C3 make desulfurization oxidation fan have three different fender position, according to different comparison signal, different nonpolar electric capacity charge-discharge export different fender position signals, realize stepping regulation to desulfurization oxidation fan wind speed.
Preferably, the capacity of the second nonpolar capacitor C2 is greater than the capacity of the third nonpolar capacitor C3, and the capacity of the third nonpolar capacitor C3 is greater than the capacity of the first nonpolar capacitor C1.
By adopting the technical scheme, when the high level of the first comparison signal is effective, the first nonpolar capacitor C1 starts to charge and discharge, and because the capacity of the first nonpolar capacitor C1 is the minimum, when the high level of the first comparison signal is effective, the current flowing through the first nonpolar capacitor C1 is the minimum, and the wind speed of the desulfurization oxidation fan is the minimum;
similarly, when the high level of the second comparison signal is active, the second nonpolar capacitor C2 starts to charge and discharge, and the current flowing through the second nonpolar capacitor C2 is the largest and the wind speed of the desulfurization oxidation fan is the largest because the capacity of the first nonpolar capacitor C1 is the smallest;
when the high level of the third comparison signal is effective, the third nonpolar capacitor C3 starts to charge and discharge, and the wind speed of the desulfurization oxidation fan is between the first and second nonpolar capacitors.
Preferably, the control circuit comprises a switch circuit and an execution circuit, one end of the switch circuit is connected to the comparison circuit to receive the comparison signal, the other end of the switch circuit is connected to the execution circuit to output the switch signal, and one end of the execution circuit is connected to the switch circuit to receive the switch signal and output a corresponding control signal to control the operation of the desulfurization oxidation fan.
By adopting the technical scheme, the switch circuit receives the comparison signal and outputs a corresponding switch signal according to the comparison signal, the execution circuit receives the switch signal and outputs a corresponding control signal according to the switch signal, and the control signal is used for controlling the operation of the desulfurization oxidation fan.
Preferably, the desulfurization oxidation fan is an air suspension fan.
Through adopting above-mentioned technical scheme, the air suspension fan adopts core high-end science and technology such as hypervelocity Permanent Magnet Synchronous Machine (PMSM), air suspension bearing, high accuracy centrifugal impeller, has characteristics such as operation is reliable, energy-efficient, small, light in weight, simple structure, noise height and automation level height.
Preferably, the fan box is provided with a gas transmission pipe in a penetrating manner, the end part of the gas transmission pipe is arranged at the output end of the desulfurization oxidation fan, and the gas transmission pipe is provided with a check valve.
Through adopting above-mentioned technical scheme, desulfurization oxidation fan carries the air to subsequent reaction tank in through the gas-supply pipe, and the liquid refluence in the check valve avoids the reaction tank to arouse the damage of desulfurization oxidation fan in advancing the desulfurization oxidation fan.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the detection circuit detects the content of the flue gas in the reaction tank, so that when the concentration of the flue gas in the reaction tank is low, the air speed of the desulfurization oxidation fan is low, and when the concentration of the flue gas is high, the air speed of the desulfurization oxidation fan is increased, so that the concentration of the flue gas and the air speed of the desulfurization oxidation fan reach a linear relation, and the working efficiency of the desulfurization oxidation fan is improved to achieve an energy-saving effect;
2. the detection signal is compared with the lower limit preset value signal by the first comparison circuit and a relative first comparison signal is output, the detection signal is compared with the upper limit preset value signal by the second comparison circuit and a relative second comparison signal is output, the first comparison signal and the second comparison signal are received by the third comparison circuit and a relative third comparison signal is output, so that the conditions that the detection signal is smaller than the lower limit preset value signal, the detection signal is larger than the upper limit preset value signal, the detection signal is larger than the lower limit preset value signal and is smaller than the upper limit preset value signal are listed;
3. first nonpolar electric capacity C1, second nonpolar electric capacity C2 and third nonpolar electric capacity C3 make desulfurization oxidation fan have three different fender position, according to the comparison signal of difference, different nonpolar electric capacity charge-discharge, output different fender position signals, realize stepping the regulation to desulfurization oxidation fan wind speed.
Drawings
FIG. 1 is a circuit schematic of an intelligent regulation circuit in an embodiment of the present application;
FIG. 2 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 3 is a side view of an embodiment of the present application;
fig. 4 is a sectional view taken along line a-a of fig. 3.
Description of reference numerals: 1. a desulfurization oxidation fan; 2. a fan box; 3. an intelligent regulation circuit; 4. a detection circuit; 5. a comparison circuit; 51. a first comparison circuit; 52. a second comparison circuit; 53. a third comparison circuit; 6. a gear circuit; 7. a control circuit; 71. a switching circuit; 72. an execution circuit; 8. a gas delivery pipe; 9. a flange; 10. a check valve.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a desulfurization oxidation fan economizer.
As shown in fig. 1 and 4, the energy-saving device for the desulfurization oxidation fan comprises a desulfurization oxidation fan 1, a fan box 2 and an intelligent adjusting circuit 3 for intelligently adjusting the wind speed of the desulfurization oxidation fan 1. Desulfurization oxidation fan 1 fixed connection is in fan case 2, and intelligent regulation circuit 3 passes through circuit board integration and fixed connection in fan case 2. The intelligent adjusting circuit 3 comprises a detection circuit 4, a comparison circuit 5, a gear circuit 6 and a control circuit 7. The detection circuit 4 is used for detecting the concentration of the flue gas to output a detection signal; the comparison circuit 5 is connected to the detection circuit 4 to receive the detection signal, and the comparison circuit 5 compares the detection signal with a preset value signal to output a comparison signal; the gear circuit 6 is connected to the comparison circuit 5 to receive the comparison signal and output a corresponding gear signal according to the comparison signal; the control circuit 7 is connected with the gear circuit 6 to receive the gear signal and output a corresponding control signal according to the gear signal; the desulfurization oxidation fan 1 is connected with the control circuit 7 to receive the control signal and correspondingly adjust the air speed according to the control signal.
The realization is when flue gas concentration in the reaction tank is lower, and the wind speed of desulfurization oxidation fan 1 is low, and when flue gas concentration risees, the wind speed of desulfurization oxidation fan 1 also risees thereupon for flue gas concentration and desulfurization oxidation fan 1's wind speed reach linear relation, improve desulfurization oxidation fan 1's work efficiency in order to reach energy-conserving effect.
In the present embodiment, a 380V power supply is used to supply power to the intelligent control circuit 7; the detection circuit 4 may be a gas concentration sensor or a gas sensitive resistor.
As shown in fig. 1, the comparison circuit 5 includes a first comparison circuit 51, a second comparison circuit 52, and a third comparison circuit 53.
The first comparison circuit 51 includes a first comparator U1, a first resistor R1, and a second resistor R2. The first resistor R1 has one end connected to VCC, the other end connected to the second resistor R2, and the other end of the second resistor R2 connected to ground. The node of the first resistor R1 and the second resistor R2 is connected to the unidirectional input terminal of the first comparator U1 to output a lower limit preset value signal, the inverted output terminal of the first comparator U1 is connected to the detection circuit 4 to receive the detection signal, and the output terminal of the first comparator U1 is connected to the gear circuit 6 to output a relative first comparison signal.
The first comparator U1 compares the detection signal with the lower preset value signal, and when the detection signal is greater than the lower preset value signal, the first comparator U1 outputs a low level. When the detection signal is smaller than the lower limit preset value signal, the first comparator U1 outputs a high level.
As shown in fig. 1, the second comparison circuit 52 includes a second comparator U2, a third resistor R3, and a fourth resistor R4. The third resistor R3 has one end connected to VCC, the other end connected to the fourth resistor R4, and the other end of the fourth resistor R4 connected to ground. The node of the third resistor R3 and the fourth resistor R4 is connected to the inverting input terminal of the second comparator U2 to output the upper limit preset value signal, the unidirectional output terminal of the second comparator U2 is connected to the detection circuit 4 to receive the detection signal, and the output terminal of the second comparator U2 is connected to the shift circuit 6 to output the second comparison signal.
The second comparator U2 compares the detection signal with the upper limit preset value signal, and when the detection signal is greater than the upper limit preset value signal, the second comparator U2 outputs a high level. When the detection signal is smaller than the upper limit preset value signal, the second comparator U2 outputs a low level.
The third comparison circuit 53 includes a NOR gate NOR. One input terminal of the NOR gate NOR is connected to the output terminal of the first comparator U1 for receiving the first comparison signal, the other input terminal of the NOR gate NOR is connected to the output terminal of the second comparator U2 for receiving the second comparison signal, and the output terminal of the NOR gate NOR is connected to the shift position circuit 6 for outputting the third comparison signal.
The NOR gate NOR performs a logical operation process on the first comparison signal and the second comparison signal. When the first comparison signal is at a high level and the second comparison signal is at a low level, the NOR gate NOR outputs a low level; when the first comparison signal is at a low level and the second comparison signal is at a high level, the NOR gate NOR outputs a low level; the NOR gate NOR outputs a high level when both the first comparison signal and the second comparison signal are low level or both are high level.
Therefore, when any comparison signal among the first comparison signal, the second comparison signal and the third comparison signal is at a high level, the other two comparison signals are at a low level.
As shown in fig. 1, the shift circuit 6 includes a first non-polar capacitor C1, a second non-polar capacitor C2, and a third non-polar capacitor C3 connected in parallel, wherein one end of the first non-polar capacitor C1 is connected to the output end of the first comparator U1 to receive the first comparison signal, and the other end of the first non-polar capacitor C1 is connected to the control circuit 7 to output the first shift signal; one end of the second non-polar capacitor C2 is connected to the output end of the second comparator U2 for receiving the second comparison signal, and the other end of the second non-polar capacitor C2 is connected to the control circuit 7 for outputting the second clock signal; one end of the third non-polar capacitor C3 is connected to the output of the nand gate NOR for receiving the third comparison signal, and the other end of the third non-polar capacitor C3 is connected to the control circuit 7 for outputting the third gear signal.
The capacity of the second nonpolar capacitor C2 is greater than that of the third nonpolar capacitor C3, and the capacity of the third nonpolar capacitor C3 is greater than that of the first nonpolar capacitor C1.
The first nonpolar capacitor C1, the second nonpolar capacitor C2 and the third nonpolar capacitor C3 enable the desulfurization oxidation fan 1 to realize speed regulation of three gears.
When the first comparison signal is at a high level, the first nonpolar capacitor C1 starts to charge and discharge, and outputs a first gear signal, and the wind speed of the desulfurization oxidation fan 1 is at the lowest gear because the capacity of the first nonpolar capacitor C1 is the minimum.
When the second comparison signal is at a high level, the second non-polar capacitor C2 starts to charge and discharge, and outputs a second gear signal, and the wind speed of the desulfurization oxidation fan 1 is in a middle gear because the capacity of the second non-polar capacitor C2 is between the first non-polar capacitor C1 and the third non-polar capacitor C3.
When the third comparison signal is at a high level, the third nonpolar capacitor C3 starts to charge and discharge, and a third gear signal is output, and the wind speed of the desulfurization oxidation fan 1 is at the highest gear because the capacity of the third nonpolar capacitor C3 is the minimum.
As shown in fig. 1, the control circuit 7 includes a switching circuit 71 and an execution circuit 72. One end of the switch circuit 71 is connected to the comparison circuit 5 to receive the comparison signal, the other end of the switch circuit 71 is connected to the execution circuit 72 to output the switch signal, and one end of the execution circuit 72 is connected to the switch circuit 71 to receive the switch signal and output a corresponding control signal to control the operation of the desulfurization oxidation fan 1.
The switching circuit 71 includes a transistor Q1 and a pull-down resistor R5. The base of the transistor Q1 is connected to the shift circuit 6 for receiving the shift signal, the collector of the transistor Q1 is connected to the control circuit 7 for outputting the switch signal, and the emitter of the transistor Q1 is grounded. One end of the pull-down resistor R5 is connected to the base electrode of the triode Q1, the other end of the pull-down resistor R5 is connected to the emitter electrode of the triode Q1, and the pull-down resistor R1 is guaranteed to be reliably cut off when the triode Q1 is free of output voltage or input end suspension.
In this embodiment, transistor Q1 is NPN, and transistor Q1 turns on when current saturates at the base.
As shown in fig. 1, the execution circuit 72 includes a relay KM 1. The coil of the relay KM1 is connected to the collector of the triode Q1 to receive a switching signal, and the normally open contact KM1-1 of the relay KM1 is connected to the desulfurization oxidation fan 1 to control the on-off of the desulfurization oxidation fan 1.
When the triode Q1 is in saturated conduction, the normally open contact KM1-1 of the relay KM1 is attracted, and the desulfurization oxidation fan 1 starts to work; when the triode Q1 is cut off, the normally open contact KM1-1 of the relay KM1 is disconnected, and the desulfurization oxidation fan 1 stops working.
In this embodiment, a freewheeling diode D1 is reversely connected to the coil of the relay KM1, and the freewheeling diode D1 is used to eliminate the reverse induced current generated when the coil is de-energized, so as to reduce the damage of the reverse induced current to the relay KM 1.
In this embodiment, the desulfurization oxidation fan 1 is an air suspension fan, and the air suspension fan adopts core high-end technologies such as a super-high-speed Permanent Magnet Synchronous Motor (PMSM), an air suspension bearing, a high-precision centrifugal impeller and the like, so that the desulfurization oxidation fan has the characteristics of reliable operation, high efficiency, energy conservation, small size, light weight, simple structure, ultralow noise, high automation level and the like.
As shown in fig. 2 and 3, an air pipe 8 is arranged on the fan box 2 in a penetrating manner, and the air pipe 8 is used for conveying air oxidized by the desulfurization oxidation fan 1 to a subsequent reaction tank. The end part of the gas pipe 8 is detachably connected with the output end of the desulfurization oxidation fan 1 through a flange 9. The gas pipe 8 is detachably connected with a check valve 10 through a flange 9. The check valve 10 prevents the liquid in the subsequent reaction tank from flowing back to the desulfurization oxidation fan 1, thereby reducing the possibility of damage of the desulfurization oxidation fan 1.
The implementation principle is as follows:
if the lower limit preset value signal is set to 30mg/m3 and the upper limit preset value signal is set to 50mg/m3, the gas concentration in the flue gas detected by the detection circuit 4 is divided into three cases:
in the first case, when the gas concentration in the flue gas is less than 30mg/m3, the first comparator U1 outputs a high level, and the second comparator U2 and the nand gate NOR both output a low level, so that the first nonpolar capacitor C1 starts to charge and discharge, the desulfurization oxidation fan 1 starts to operate, and the wind speed of the desulfurization oxidation fan 1 is minimum at this time because the capacity of the first nonpolar capacitor C1 is minimum;
in the second case, when the gas concentration in the flue gas is greater than 30mg/m3 and less than 50mg/m3, the nand gate NOR outputs a high level, and the first comparator U1 and the second comparator U2 both output a low level, so that the second nonpolar capacitor C2 starts to charge and discharge, the desulfurization oxidation fan 1 starts to operate, and the wind speed of the desulfurization oxidation fan 1 is in a middle range because the capacity of the second nonpolar capacitor C2 is between the capacity of the first nonpolar capacitor C1 and the capacity of the third nonpolar capacitor C3;
in a third case, when the gas concentration in the flue gas is greater than 50mg/m3, the second comparator U2 outputs a high level, and the first comparator U1 and the nand gate NOR both output a low level, so that the third nonpolar capacitor C3 starts to charge and discharge, the desulfurization oxidation fan 1 starts to operate, and the wind speed of the desulfurization oxidation fan 1 is the maximum at this time because the capacity of the third nonpolar capacitor C3 is the maximum;
therefore, the air speed of the desulfurization oxidation fan 1 which starts to operate is intelligently adjusted by detecting the concentration of the gas in the flue gas, and the working efficiency of the desulfurization oxidation fan 1 is improved so as to achieve the energy-saving effect.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a desulfurization oxidation fan economizer, includes desulfurization oxidation fan (1) and fan case (2), desulfurization oxidation fan (1) sets up in fan case (2), its characterized in that: still including intelligent regulation circuit (3) that are used for intelligent regulation desulfurization oxidation fan (1) wind speed, intelligent regulation circuit (3) set up in fan case (2), intelligent regulation circuit (3) include:
the detection circuit (4) is used for detecting the concentration of the smoke to output a detection signal;
the comparison circuit (5) is connected to the detection circuit (4) to receive the detection signal, and the comparison circuit (5) compares the detection signal with a preset value signal to output a comparison signal;
the gear circuit (6) is connected to the comparison circuit (5) to receive the comparison signal and output a corresponding gear signal according to the comparison signal;
the control circuit (7) is connected to the gear circuit (6) to receive the gear signal and output a corresponding control signal according to the gear signal;
and the desulfurization oxidation fan (1) is connected to the control circuit (7) to receive the control signal and correspondingly adjust the air speed according to the control signal.
2. The desulfurization oxidation fan energy-saving device of claim 1, characterized in that: the comparison circuit (5) comprises a first comparison circuit (51), a second comparison circuit (52) and a third comparison circuit (53),
one end of the first comparison circuit (51) is connected to the detection circuit (4) to receive the detection signal and compare the detection signal with the lower limit preset value signal, and the other end of the first comparison circuit is connected to the gear circuit (6) to output a first comparison signal;
one end of the second comparison circuit (52) is connected to the detection circuit (4) to receive the detection signal and compare the detection signal with the upper limit preset value signal, and the other end of the second comparison circuit is connected to the gear circuit (6) to output a second comparison signal;
one input end of the third comparison circuit (53) is connected to the first comparison circuit (51) to receive the first comparison signal, the other input end of the third comparison circuit is connected to the second comparison circuit (52) to receive the second comparison signal, and the output end of the third comparison circuit is connected to the gear circuit (6) and outputs a corresponding third comparison signal according to the first comparison signal and the second comparison signal;
the comparison signals include a first comparison signal, a second comparison signal, and a third comparison signal.
3. The desulfurization oxidation fan energy-saving device of claim 2, characterized in that: the first comparison circuit (51) comprises a first comparator U1, an inverting input end of the first comparator U1 is connected to the detection circuit (4) to receive a detection signal, a non-inverting input end of the first comparator U1 receives a lower limit preset value signal, the first comparator U1 compares the detection signal with the lower limit preset value signal, and an output end of the first comparator U1 is connected to the gear circuit (6) to output a corresponding first comparison signal.
4. The desulfurization oxidation fan energy-saving device of claim 2, characterized in that: the second comparison circuit (52) comprises a second comparator U2, the same-direction input end of the second comparator U2 is connected to the detection circuit (4) to receive the detection signal, the reverse-direction input end of the second comparator U2 receives the upper limit preset value signal, the second comparator U2 compares the detection signal with the upper limit preset value signal, and the output end of the second comparator U2 is connected to the gear circuit (6) to output a corresponding second comparison signal.
5. The desulfurization oxidation fan energy-saving device of claim 2, characterized in that: the third comparison circuit (53) comprises an and gate NOR, one input end of the and gate NOR is connected to the output end of the first comparator U1 to receive the first comparison signal, the other input end of the and gate NOR is connected to the output end of the second comparator U2 to receive the second comparison signal, the and gate NOR carries out logic processing on the first comparison signal and the second comparison signal, and the output end of the and gate NOR is connected to the gear circuit (6) to output the third comparison signal.
6. The desulfurization oxidation fan energy-saving device of claim 1, characterized in that: the gear circuit (6) comprises a first nonpolar capacitor C1, a second nonpolar capacitor C2 and a third nonpolar capacitor C3 which are connected in parallel,
one end of the first nonpolar capacitor C1 is connected to the output end of the first comparator U1 to receive the first comparison signal, and the other end of the first nonpolar capacitor C1 is connected to the control circuit (7) to output the first gear signal;
one end of the second nonpolar capacitor C2 is connected to the output end of the second comparator U2 to receive the second comparison signal, and the other end of the second nonpolar capacitor C2 is connected to the control circuit (7) to output the second clock signal;
one end of the third non-polar capacitor C3 is connected to the output end of the nand gate NOR for receiving the third comparison signal, and the other end of the third non-polar capacitor C3 is connected to the control circuit (7) for outputting the third gear signal;
the gear signals comprise a first gear signal, a second gear signal and a third gear signal.
7. The desulfurization oxidation fan energy-saving device of claim 6, characterized in that: the capacity of the second nonpolar capacitor C2 is greater than that of the third nonpolar capacitor C3, and the capacity of the third nonpolar capacitor C3 is greater than that of the first nonpolar capacitor C1.
8. The desulfurization oxidation fan energy-saving device of claim 1, characterized in that: the control circuit (7) comprises a switch circuit (71) and an execution circuit (72), one end of the switch circuit (71) is connected to the comparison circuit (5) to receive the comparison signal, the other end of the switch circuit (71) is connected to the execution circuit (72) to output the switch signal, and one end of the execution circuit (72) is connected to the switch circuit (71) to receive the switch signal and output a corresponding control signal to control the operation of the desulfurization oxidation fan (1).
9. The desulfurization oxidation fan energy-saving device of claim 1, characterized in that: the desulfurization oxidation fan (1) is an air suspension fan.
10. The desulfurization oxidation fan energy-saving device of claim 9, characterized in that: the desulfurization oxidation fan is characterized in that a gas transmission pipe (8) penetrates through the fan box (2), the end part of the gas transmission pipe (8) is arranged at the output end of the desulfurization oxidation fan (1), and a check valve (10) is arranged on the gas transmission pipe (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122529876.3U CN215980064U (en) | 2021-10-20 | 2021-10-20 | Energy-saving device of desulfurization oxidation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122529876.3U CN215980064U (en) | 2021-10-20 | 2021-10-20 | Energy-saving device of desulfurization oxidation fan |
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| Publication Number | Publication Date |
|---|---|
| CN215980064U true CN215980064U (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122529876.3U Active CN215980064U (en) | 2021-10-20 | 2021-10-20 | Energy-saving device of desulfurization oxidation fan |
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| Country | Link |
|---|---|
| CN (1) | CN215980064U (en) |
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2021
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