CN102606188A - Dust removing fan and water system control method used for dust removing fan - Google Patents
Dust removing fan and water system control method used for dust removing fan Download PDFInfo
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- CN102606188A CN102606188A CN2012100672423A CN201210067242A CN102606188A CN 102606188 A CN102606188 A CN 102606188A CN 2012100672423 A CN2012100672423 A CN 2012100672423A CN 201210067242 A CN201210067242 A CN 201210067242A CN 102606188 A CN102606188 A CN 102606188A
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Abstract
The invention provides a dust removing fan. The dust removing fan comprises a dust separator, a water box, a water pump, a mud pump, a first liquid level sensor and a controller, wherein the first liquid level sensor is arranged at the position of a water storage tank of the dust separator and used for detecting the water level in the water storage tank and feeding the detected water level information to the controller; and the controller judges whether the water level in the water storage tank is in a set water level range according to the water level information, sends a regulating instruction to a frequency regulator if the water level is not in the set water level range, and regulates the rotation speed of a motor of the water pump and a motor of the mud pump through the frequency regulator, so that the water level in the water storage tank is in the set water level range. According to the technical scheme, the liquid level of the water storage tank of the dust separator is always at the safety position, and the water storage tank alarms and stops when in failure. The invention also provides a water system control method used for the dust removing fan.
Description
Technical field
The present invention relates to engineering machinery field, in particular to dedusting fan and the water system control method that is used for dedusting fan.
Background technology
At present, when being equipped with dedusting fan as shown in Figure 1, because the water supply of deduster is that the mine water system provides in the down-hole; The supply discharge of downhole system and the need discharge of dedusting fan require unknown, if the water supply flow of deduster is greater than the sewer flow, the deduster air outlet can spray a large amount of water; If the water supply flow of deduster is less than the sewer flow; Then emptying phenomenon can appear in slush pump, causes the infringement of element, and endangers.
And dedusting fan as shown in Figure 2; Its deduster has been equipped with water tank and supply-water pump; The flow matches of the water system of dedusting fan is by supply-water pump and dredge pump decision; The liquid level that can not guarantee the deduster catch basin is in home all the time, can not guarantee that under the water system something unexpected happened, system can report to the police and shut down automatically.
From the above, adopt the dedusting fan form among Fig. 1, have following shortcoming:
1) ore deposit side needs to be equipped with supply-water pump according to the parameter of dedusting fan and dredge pump;
2) can not guarantee that deduster catch basin liquid level is in home all the time;
3) when the dedusting fan water system breaks down, can not guarantee in time to report to the police and shut down.
Adopt the dedusting fan form among Fig. 2, have following shortcoming:
The liquid level that 1) can not guarantee the deduster catch basin is in home all the time;
2) when the dedusting fan water system breaks down, can not guarantee in time to report to the police and shut down.
Therefore, need a kind of dedusting fan not only can make the liquid level of deduster catch basin be in home all the time, can also be when water system break down, in time report to the police and shut down processing, prevent the generation that endangers.
Summary of the invention
Consider the above-mentioned background technology; A technical problem to be solved by this invention provides a kind of dedusting fan; Another technical problem to be solved by this invention provides a kind of water system control method that is used for dedusting fan, can make the liquid level of deduster catch basin be in home all the time, can also be when water system breaks down; In time report to the police and shut down processing, prevent the generation that endangers.
According to an aspect of the present invention, a kind of dedusting fan is provided, has comprised deduster, water tank, water pump and slush pump; The delivery port of said water tank is connected to the water inlet of said water pump, and the delivery port of said water pump is connected to the water inlet of said deduster, and the delivery port of said slush pump is connected to the water inlet of said water tank; Comprise: first liquid level sensor; Be installed in the catch basin place of said deduster, detect the water level in the catch basin, detected water level information is fed back to controller; Said controller; Judge that according to said water level information water level in the said catch basin is whether in the predetermined water level scope; If not in said predetermined water level scope, then send regulating command to frequency regulator, regulate the rotating speed and/or the slush pump rotating speed of motor of pump motor through said frequency regulator; With the displacement of regulating said water pump and/or the inflow of said slush pump, make water level in the said catch basin in said predetermined water level scope.
Can detect the liquid level of catch basin in real time through liquid level sensor, the level condition to controller feedback catch basin has preset the safety level scope in controller; Testing result and this safety level scope are compared; If in this safety level scope, explain that then the liquid level of current catch basin is in home, if not in this safety level scope; Then need regulate the displacement of water pump and the inflow of slush pump, thereby the liquid level of catch basin is got back in the safety level scope.
When concrete the adjusting, can regulate water pump and slush pump rotating speed of motor through frequency regulator, thus the inflow of the displacement of control of pump and slush pump.
In technique scheme, preferably, also comprise: the first flow sensor and second flow transmitter; Said first flow sensor is installed in the outlet pipe place of said water pump; Detect the displacement of said water pump, and with detected displacement feedback information to said controller, said second flow transmitter is installed in the water inlet pipe place of said slush pump; Detect the inflow of said slush pump, and with detected inflow feedback information to said controller; Said controller comprises computing unit; Be used for according to the displacement of said water pump and the inflow of said slush pump; Calculate the output frequency that the water level in the said catch basin is returned to required frequency regulator in the said predetermined water level scope, generate said regulating command according to said output frequency.
Can accurately obtain the displacement of water pump and the inflow of slush pump through flow transmitter; Thereby can know that the current liquid level with catch basin returns to safe liquid level scope; The rotating speed of required water pump and/or the rotating speed of slush pump, thus can confirm the required output frequency of frequency regulator.
In technique scheme; Preferably; Said controller also is used for after the water level of said catch basin returns in the said predetermined water level scope; According to the inflow of the said slush pump of the displacement of the said water pump of said first flow sensor feedback and said second flow transmitter feedback, regulate the displacement of said water pump and the inflow of said slush pump, making the difference of inflow of displacement and the said slush pump of said water pump is preset value.
After the liquid level of catch basin returns to the safety level scope; Need regulate the displacement of water pump and the inflow of slush pump again; Because flow transmitter has certain error, so difference of total existence between the actual inflow of the actual displacement of water pump and slush pump need make this difference reach above-mentioned predetermined value; This difference is by the precision decision of flow transmitter; Precision is high more, and this difference is just more little, and the cycle of inflow of displacement and slush pump that need regulate water pump so once more is just long more.
In technique scheme; Preferably; Said controller also is used at the water level of said catch basin during less than preset lowest water level; Perhaps when the water level of said catch basin is higher than preset peak level and surpasses the rising of predetermined amount of time continued; Perhaps when the electric current of the electric current of said pump motor and said slush pump motor surpasses the predetermined current value, perhaps when said first liquid level sensor, said first flow sensor and said second flow transmitter will not detect information or error message sent to said controller, it is out of service and to alarm transmission alarm signal to control the blower fan of said water pump, said slush pump and said dedusting fan; Said dedusting fan also comprises said alarm, is connected to said controller, when receiving said alarm signal, reports to the police.
When above-mentioned failure condition appears in dedusting fan, can report to the police and shut down processing, further guarantee the safe operation of dedusting fan.Certainly, failure condition can not be exhaustive, when other failure conditions of not enumerating occurring, can handle similarly.
In technique scheme, preferably, said controller, said frequency regulator and said alarm all are arranged in the explosion-proof electric control box.
If this dedusting fan as mining, then can be arranged on these non-explosion-proof electric apparatus elements in the explosion-proof electric control box, when fortuitous event occurring, can protect these important components and parts, reached the standard of using at downhole safety.
In technique scheme, preferably, can also comprise: display, be connected to said controller, be arranged on said explosion-proof electric control box place, be used for showing the inflow information and the displacement information of the water level information of said catch basin, said deduster.
Like this, can find the current state information of catch basin intuitively, the handled easily people carries out associated maintenance work.
In technique scheme; Preferably; The place also is provided with the switching device of the switching device of said water pump, said slush pump and the switching device of said blower fan at said explosion-proof electric control box; All be connected to said controller, control the operation of said water pump, said slush pump and said blower fan according to user's switching command.
Be arranged in the explosion-proof electric control box with water pump, slush pump and blower fan corresponding switch device, these switching devices of user's direct control just can cut off corresponding power supply, with the operation of control of pump, slush pump and blower fan.
In technique scheme, preferably, also comprise: second liquid level sensor, be installed in said water tank place, be used to detect the water level of said water tank, and the water level information of detected said water tank is fed back to said controller; Said controller also is used for when the water level of said water tank is lower than cistern water level minimum definite value, and it is out of service to control said water pump, said slush pump and said blower fan.
Detect in real time the water level of water tank, the water that prevents water tank is evacuated or overflows, and when finding time, can in time replenish the water source, when water tank breaks down, can stop the operation of dedusting fan, the normal operation of assurance dedusting fan.
In technique scheme, preferably, said first liquid level sensor and said second liquid level sensor are the intrinsic safety liquid level sensor.
In technique scheme, preferably, said first flow sensor and said second flow transmitter are the intrinsic safety flow transmitter.
In technique scheme, preferably, said frequency regulator is fluid coupling or frequency converter.
Fluid coupling or frequency converter all can be regulated pump motor and slush pump rotating speed of motor, at this, should be appreciated that, the element of other scalable pump motors and slush pump rotating speed of motor all can be applied to this.
According to another aspect of the invention, a kind of water system control method that is used for dedusting fan is provided also, has may further comprise the steps: the water level information that obtains the catch basin of deduster in the said dedusting fan; Water level information according to the said catch basin that obtains; Whether the water level of judging said catch basin is in the predetermined water level scope; If not in said predetermined water level scope, the output frequency of regulating frequency adjuster then, the rotating speed and the slush pump rotating speed of motor of regulating pump motor; With the displacement of regulating said water pump and the inflow of said slush pump, make water level in the said catch basin in said predetermined water level scope.
Can detect the liquid level of catch basin in real time through liquid level sensor, the level condition to controller feedback catch basin has preset the safety level scope in controller; Testing result and this safety level scope are compared; If in this safety level scope, explain that then the liquid level of current catch basin is in home, if not in this safety level scope; Then need regulate the displacement of water pump and the inflow of slush pump, thereby the liquid level of catch basin is got back in the safety level scope.
When concrete the adjusting, can regulate water pump and slush pump rotating speed of motor through frequency regulator, thus the inflow of the displacement of control of pump and slush pump.
In technique scheme, preferably, can also comprise: detect the displacement of the water pump of said dedusting fan, and the inflow that detects the slush pump of said dedusting fan; According to the displacement of said water pump and the inflow of said slush pump; Calculate the output frequency that the water level in the said catch basin is returned to required frequency regulator in the said predetermined water level scope; With rotating speed and the slush pump rotating speed of motor that said output frequency is regulated pump motor, make water level in the said catch basin in said predetermined water level scope.
Can accurately obtain the displacement of water pump and the inflow of slush pump through flow transmitter; Thereby can know that the current liquid level with catch basin returns to safe liquid level scope; The rotating speed of required water pump and/or the rotating speed of slush pump, thus can confirm the required output frequency of frequency regulator.
In technique scheme; Preferably; Can also comprise: after the water level in said catch basin returns in the said predetermined water level scope; Continue to regulate the displacement of said water pump and the inflow of said slush pump, making the difference of inflow of displacement and the said slush pump of said water pump is preset value.
After the liquid level of catch basin returns to the safety level scope; Need regulate the displacement of water pump and the inflow of slush pump again; Because flow transmitter has certain error, so difference of total existence between the actual inflow of the actual displacement of water pump and slush pump need make this difference reach above-mentioned predetermined value; This difference is by the precision decision of flow transmitter; Precision is high more, and this difference is just more little, and the cycle of inflow of displacement and slush pump that need regulate water pump so once more is just long more.
In technique scheme; Preferably; Can also comprise: at the water level of said catch basin during less than preset lowest water level; Perhaps when the water level of said catch basin is higher than preset peak level and surpasses the rising of predetermined amount of time continued; Perhaps when the electric current of the electric current of said pump motor and said slush pump motor surpasses the predetermined current value, perhaps when the inflow of the displacement of the water level information that does not get access to said catch basin, said water pump and said slush pump, it is out of service and report to the police to control the blower fan of said water pump, said slush pump and said dedusting fan.
When above-mentioned failure condition appears in dedusting fan, can report to the police and shut down processing, further guarantee the safe operation of dedusting fan.Certainly, failure condition can not be exhaustive, when other failure conditions of not enumerating occurring, can handle similarly.
In technique scheme; Preferably, the first flow sensor is installed, is detected the displacement of said water pump at the outlet pipe place of said water pump; Second flow transmitter is installed at water inlet pipe place at said slush pump; Detect the inflow of said slush pump, liquid level sensor is installed at said catch basin place, detect the water level of said catch basin.
Through technique scheme, can accurately detect the displacement of water pump and the inflow of slush pump, promptly can obtain the inflow and the water yield of deduster; Through the rotating speed of controller control of pump and the rotating speed of slush pump, thereby the liquid level of regulating the deduster catch basin is in the safety level scope it; And when breaking down; Can in time report to the police automatically, and measures areput is provided, thereby guarantee the normal operation of dedusting fan and operating personnel's personal safety.
Description of drawings
Fig. 1 shows the sketch map of the dedusting fan in the correlation technique;
Fig. 2 shows the sketch map of the dedusting fan in the correlation technique;
Fig. 3 shows the sketch map of dedusting fan according to an embodiment of the invention;
Fig. 4 shows the schematic diagram of dedusting fan according to an embodiment of the invention;
Fig. 5 shows the flow chart of the water system control method that is used for dedusting fan according to an embodiment of the invention.
Wherein, the corresponding relation between Reference numeral and the component names is among Fig. 1:
1 intake stack, 2 dedusters, 3 feed pipes, 4 blower fans, 5 explosion-proof slush pumps, 6 sewage pipes, 7 advance soil pipe, 8 catch basins;
Corresponding relation among Fig. 2 between Reference numeral and the component names is:
1 intake stack, 2 dedusters, 3 feed pipes, 4 blower fans, 5 explosion-proof slush pumps, 6 sewage pipes, 7 advance soil pipe, 8 catch basins, 9 pressure meters, 10 flowmeters, 11 explosion-proof water pumps, 12 water inlet pipes, 13 strainers, 14 water tanks;
Corresponding relation among Fig. 3 between Reference numeral and the component names is:
1 water tank, 2 second liquid level sensors, 3 intake stacks, 4 dedusters, 5 first flow sensors, 6 blower fans, 7 slush pumps, 8 explosion-proof electric control boxs, 9 water pumps, 10 strainers, 11 cistern water supply pipes, 12 blow-off pipes, 13 first liquid level sensors, 15 second flow transmitters.
The specific embodiment
In order more to be expressly understood above-mentioned purpose of the present invention, feature and advantage, the present invention is further described in detail below in conjunction with the accompanying drawing and the specific embodiment.
Set forth a lot of details in the following description so that make much of the present invention, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following disclosed specific embodiment.
Please refer to Fig. 3 and Fig. 4, Fig. 3 shows the sketch map of dedusting fan according to an embodiment of the invention, and Fig. 4 shows the schematic diagram of dedusting fan according to an embodiment of the invention.
Dedusting fan comprises deduster 4, water tank 1, water pump 9 and slush pump 7 according to an embodiment of the invention, and the delivery port of water tank 1 is connected to the water inlet of water pump 9; The delivery port of water pump 9 is connected to the water inlet of deduster 4; The delivery port of slush pump 7 is connected to the water inlet of water tank 1, comprising: first liquid level sensor 13 is installed in the catch basin place of deduster 4; Detect the water level in the catch basin, detected water level information is fed back to controller; Controller; Judge that according to water level information water level in the catch basin is whether in the predetermined water level scope; If not in the predetermined water level scope, then send regulating command to frequency regulator, regulate the rotating speed and/or the slush pump rotating speed of motor of pump motor through frequency regulator; With the inflow of the slush pump 7 of the displacement of regulating water pump 9 and/or catch basin, make water level in the catch basin in the predetermined water level scope.
Can detect the liquid level of catch basin in real time through liquid level sensor, the level condition to controller feedback catch basin has preset the safety level scope in controller; Testing result and this safety level scope are compared; If in this safety level scope, explain that then the liquid level of current catch basin is in home, if not in this safety level scope; Then need regulate the displacement of water pump and the inflow of slush pump, thereby the liquid level of catch basin is got back in the safety level scope.
When concrete the adjusting, can regulate pump motor and slush pump rotating speed of motor through frequency regulator, thus the inflow of the displacement of control of pump and slush pump.
Preferably; Can also comprise: the first flow sensor 5 and second flow transmitter 15, first flow sensor 5 is installed in the outlet pipe place of water pump 9, detects the displacement of water pump 9; And with detected displacement feedback information to the controller (not shown); Second flow transmitter 15 is installed in the water inlet pipe place of slush pump 7, detects the inflow of slush pump 7, and with detected inflow feedback information to controller; Controller comprises computing unit; Be used for according to the displacement of water pump 9 and the inflow of slush pump 7; Calculate the output frequency that the water level in the catch basin is returned to required frequency regulator (not shown) in the predetermined water level scope, generate regulating command according to output frequency.
Can accurately obtain the displacement of water pump and the inflow of slush pump through flow transmitter; Thereby can know that the liquid level with catch basin returns to safe liquid level scope; The rotating speed of required pump motor and/or slush pump rotating speed of motor, thus can confirm the required output frequency of frequency regulator.
Preferably; Controller also is used for after the water level of catch basin returns in the said predetermined water level scope; Inflow according to the said slush pump 7 of the displacement of the said water pump 9 of said first flow sensor 5 feedbacks and said second flow transmitter, 15 feedbacks; Regulate the displacement of water pump 9 and the inflow of slush pump 7, making the difference of inflow of displacement and the slush pump 7 of water pump 9 is preset value.
For example, the liquid level that can suppose the deduster catch basin is at h
1To h
2In the scope is the safety level scope, when the catch basin water level exceeds h
2The time, controller sends instruction to frequency converter (or fluid coupling), improves the slush pump rotating speed of motor; Thereby improve the blowdown flow of slush pump; Or controller sends the rotating speed that instruction reduces pump motor to frequency converter, thereby reduces the flow of inlet water of deduster, returns to h until the deduster height of water level
1To h
2In this safety level scope.
Controller is regulated the flow of inlet water of water pump and the discharge water flow of slush pump again to frequency converter instruction then, and the difference in flow that makes them is Δ u (predetermined value), and Δ u numerical value is more little, and the time interval of rotating speed that need regulate water pump and slush pump once more is long more.
Likewise, be lower than h when the deduster water level
1Be higher than h
3The time, h
3Be lowest water level (alarm water level) that controller sends instruction to frequency converter, reduces the slush pump rotating speed of motor, and then reduce the drain discharge of slush pump, return to h until the deduster height of water level
1To h
2In this safety level scope, controller is again to frequency converter instruction then, and the flow of inlet water difference that the discharge water flow of regulating slush pump makes it with water pump is Δ u.
When following situation took place, controller sends alarm command and emergency stop system automatically: the deduster water level was at lowest water level h
3Below, the deduster water level exceeds h
2The setting requirement that water level is still lasting in a period of time Δ t raises (the automatic disabler of regulating water system is described), motor surpasses electric current, two liquid level sensors and two flow transmitters do not send information or send error message to controller.
After the liquid level of catch basin returns to the safety level scope; Need regulate the displacement of water pump and the inflow of slush pump again; Because flow transmitter has certain error, so difference of total existence between the actual inflow of the actual displacement of water pump and slush pump need make this difference reach above-mentioned predetermined value; This difference is by the precision decision of flow transmitter; Precision is high more, and this difference is just more little, and the cycle of inflow of displacement and slush pump that need regulate water pump so once more is just long more.
Preferably; Controller also is used at the water level of catch basin during less than preset lowest water level; Perhaps when the water level of catch basin is higher than preset peak level and surpasses the rising of predetermined amount of time continued; Perhaps when the electric current of the electric current of pump motor and slush pump motor surpasses the predetermined current value; Perhaps at first liquid level sensor 13, first flow sensor 5 with second flow transmitter 15 will not detect information or when error message sent to controller, the blower fan of control of pump 9, slush pump 7 and dedusting fan 6 is out of service and send alarm signal to alarm; Dedusting fan can also comprise the alarm (not shown), is connected to controller, when receiving alarm signal, reports to the police.
When above-mentioned failure condition appears in dedusting fan, can report to the police and shut down processing, further guarantee the safe operation of dedusting fan.Certainly, failure condition can not be exhaustive, when other failure conditions of not enumerating occurring, can handle similarly.
Preferably, controller, frequency regulator and alarm all are arranged in the explosion-proof electric control box 8.
If this dedusting fan as mining, then can be arranged on these non-explosion-proof electric apparatus elements in the explosion-proof electric control box, when fortuitous event occurring, can protect these important components and parts, reached the standard of using at downhole safety.
In technique scheme, preferably, can also comprise: display, be connected to controller, be arranged on explosion-proof electric control box 8 places, be used for showing the water level information of catch basin, the inflow information and the displacement information of deduster 4.
Like this, can find the current state information of catch basin intuitively, the handled easily people carries out associated maintenance work.
In technique scheme; Preferably; Also be provided with the switching device of water pump 9, the switching device of slush pump 7 and the switching device of blower fan 6 at explosion-proof electric control box place, all be connected to controller, according to the operation of user's switching command control of pump 9, slush pump 7 and blower fan 6.
Be arranged in the explosion-proof electric control box with water pump, slush pump and blower fan 6 corresponding switch devices, these switching devices of user's direct control just can cut off corresponding power supply, with the operation of control of pump, slush pump and blower fan 6.
In technique scheme, preferably, also comprise: second liquid level sensor 2, be installed in water tank 1 place, be used to detect the water level of water tank 1, and the water level information of detected water tank 1 is fed back to controller; Controller also is used for when the water level of water tank 1 is lower than cistern water level minimum definite value, and control of pump 9, slush pump 7 and blower fan 6 are out of service.
Detect in real time the water level of water tank 1, the water that prevents water tank 1 is evacuated or overflows, and when finding time, can in time replenish the water source, when water tank 1 breaks down, can stop the operation of dedusting fan 6, the normal operation of assurance dedusting fan.
Wherein, first liquid level sensor 13 and second liquid level sensor 2 all can be the intrinsic safety liquid level sensor.The first flow sensor 5 and second flow transmitter 15 all can be the intrinsic safety flow transmitter.Reach complete standard, be applicable to the working environment that safety requirements is higher, for example mine.
In technique scheme, preferably, frequency regulator is fluid coupling or frequency converter.
Fluid coupling or frequency converter all can be regulated pump motor and slush pump rotating speed of motor, at this, should be appreciated that, the element of other scalable pump motors and slush pump rotating speed of motor all can be applied to this.And pump motor and slush pump motor can be distinguished corresponding frequency regulator, also can a shared frequency regulator.
In addition; Water through the blow-off pipe of slush pump 7 12 is discharged can be got back in the water tank 1 through the cistern water supply pipe 11 of water tank 1, offers water pump 9 after the filtration through strainer 10, makes the waste water can recycling; In addition, can also other water sources directly be connect inlet water tank 1.
Therefore, for protection equipment, meet the technical problem that safety of coal mines requires and solve deduster water system flow matches, on water tank and deduster aqua storage tank, the intrinsic safety liquid level sensor has been installed all and has been used for monitoring liquid level; At pumping line and slush pump water inlet pipe the intrinsic safety flow transmitter has been installed, has been monitored the discharge of turnover deduster.According to the relational expression between frequency converter frequency, motor speed, the Pump output, confirm the relation between flow and the frequency, controller sends command adapted thereto according to the liquid level and the flow information that receive; The output speed of control of pump motor and slush pump motor and output torque; And then the discharge of regulation and control turnover deduster, secondly the height of water level that makes deduster is in height of water level h1 to the h2 scope that system is provided with; Utilize the electric current of controller control blower motor, pump motor and slush pump motor; When meeting emergency, cut off corresponding power supply, protection equipment is without prejudice, and prevents the generation that endangers.
Fig. 5 shows the flow chart of the water system control method that is used for dedusting fan according to an embodiment of the invention.
As shown in Figure 5, be used for the water system control method of dedusting fan according to an embodiment of the invention, may further comprise the steps: step 502, obtain the water level information of the catch basin of deduster in the dedusting fan; Step 504; According to the water level information of the catch basin that obtains, judge whether the water level of catch basin is in the predetermined water level scope, if not in the predetermined water level scope; The output frequency of regulating frequency adjuster then; Regulate rotating speed and the slush pump rotating speed of motor of pump motor,, make water level in the catch basin in the predetermined water level scope with the displacement of adjusting water pump and the inflow of slush pump.
Can detect the liquid level of catch basin in real time through liquid level sensor, the level condition to controller feedback catch basin has preset the safety level scope in controller; Testing result and this safety level scope are compared; If in this safety level scope, explain that then the liquid level of current catch basin is in home, if not in this safety level scope; Then need regulate the displacement of water pump and the inflow of slush pump, thereby the liquid level of catch basin is got back in the safety level scope.
When concrete the adjusting, can regulate water pump and slush pump rotating speed of motor through frequency regulator, thus the inflow of the displacement of control of pump and slush pump.
In technique scheme, preferably, can also comprise: detect the displacement of the water pump of dedusting fan, and the inflow that detects the slush pump of dedusting fan; According to the displacement of water pump and the inflow of slush pump; Calculate the output frequency that the water level in the catch basin is returned to required frequency regulator in the predetermined water level scope; With rotating speed and the slush pump rotating speed of motor that output frequency is regulated pump motor, make water level in the catch basin in the predetermined water level scope.
Can accurately obtain the displacement of water pump and the inflow of slush pump through flow transmitter; Thereby can know that the liquid level with catch basin returns to safe liquid level scope; The rotating speed of required water pump and/or the rotating speed of slush pump, thus can confirm the required output frequency of frequency regulator.
In technique scheme, preferably, can also comprise: after the water level in catch basin returns in the predetermined water level scope, continue to regulate the displacement of water pump and the inflow of slush pump, making the difference of inflow of displacement and the slush pump of water pump is preset value.
After the liquid level of catch basin returns to the safety level scope; Need regulate the displacement of water pump and the inflow of slush pump again; Because flow transmitter has certain error, so difference of total existence between the actual inflow of the actual displacement of water pump and slush pump need make this difference reach above-mentioned predetermined value; This difference is by the precision decision of flow transmitter; Precision is high more, and this difference is just more little, and the cycle of inflow of displacement and slush pump that need regulate water pump so once more is just long more.
In technique scheme; Preferably; Can also comprise: at the water level of catch basin during less than preset lowest water level; Perhaps when the water level of catch basin is higher than preset peak level and surpasses the rising of predetermined amount of time continued; Perhaps when the electric current of the electric current of pump motor and slush pump motor surpasses the predetermined current value, perhaps when the inflow of the displacement of the water level information that does not get access to catch basin, water pump and slush pump, the blower fan of control of pump, slush pump and dedusting fan is out of service and report to the police.
When above-mentioned failure condition appears in dedusting fan, can report to the police and shut down processing, further guarantee the safe operation of dedusting fan.Certainly, failure condition can not be exhaustive, when other failure conditions of not enumerating occurring, can handle similarly.
In technique scheme, preferably, the first flow sensor is installed at the outlet pipe place of water pump; Detect the displacement of water pump, second flow transmitter is installed, detect the inflow of slush pump at the water inlet pipe place of slush pump; At the catch basin place liquid level sensor is installed, is detected the water level of catch basin.
Through technique scheme, can accurately detect the displacement of water pump and the inflow of slush pump, promptly can obtain the inflow and the water yield of deduster; Through the rotating speed of controller control of pump and the rotating speed of slush pump, thereby the liquid level of regulating the deduster catch basin is in the safety level scope it; And when breaking down; Can in time report to the police automatically, and measures areput is provided, thereby guarantee the normal operation of dedusting fan and operating personnel's personal safety.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. dedusting fan; Comprise deduster (4), water tank (1), water pump (9) and slush pump (7); The delivery port of said water tank (1) is connected to the water inlet of said water pump (9), and the delivery port of said water pump (9) is connected to the water inlet of said deduster (4), and the delivery port of said slush pump (7) is connected to the water inlet of said water tank (1); It is characterized in that, comprising:
First liquid level sensor (13) is installed in the catch basin place of said deduster (4), detects the water level in the catch basin, and detected water level information is fed back to controller;
Said controller; Judge that according to said water level information water level in the said catch basin is whether in the predetermined water level scope; If not in said predetermined water level scope, then send regulating command to frequency regulator, regulate the rotating speed and/or the slush pump rotating speed of motor of pump motor through said frequency regulator; With the inflow of the said slush pump (7) of the displacement of regulating said water pump (9) and/or catch basin, make water level in the said catch basin in said predetermined water level scope.
2. dedusting fan according to claim 1; It is characterized in that; Also comprise: first flow sensor (5) and second flow transmitter (15), said first flow sensor (5) is installed in the outlet pipe place of said water pump (9), detects the displacement of said water pump (9); And with detected displacement feedback information to said controller; Said second flow transmitter (15) is installed in the water inlet pipe place of said slush pump (7), detects the inflow of said slush pump (7), and with detected inflow feedback information to said controller;
Said controller comprises computing unit; Be used for according to the displacement of said water pump (9) and the inflow of said slush pump (7); Calculate the output frequency that the water level in the said catch basin is returned to required frequency regulator in the said predetermined water level scope, generate said regulating command according to said output frequency.
3. dedusting fan according to claim 2; It is characterized in that; Said controller also is used for after the water level of said catch basin returns in the said predetermined water level scope; Inflow according to the said slush pump (7) of the displacement of the said water pump (9) of said first flow sensor (5) feedback and said second flow transmitter (15) feedback; Regulate the displacement of said water pump (9) and the inflow of said slush pump (7), making the difference of inflow of displacement and the said slush pump (7) of said water pump (9) is preset value.
4. dedusting fan according to claim 2; It is characterized in that; Said controller also is used at the water level of said catch basin during less than preset lowest water level; Perhaps when the water level of said catch basin is higher than preset peak level and surpasses the rising of predetermined amount of time continued; Perhaps when the electric current of the electric current of said pump motor and said slush pump motor surpasses the predetermined current value; Perhaps when said first liquid level sensor (13), said first flow sensor (5) and said second flow transmitter (15) will not detect information or error message sent to said controller, it is out of service and send alarm signal to alarm to control the blower fan of said water pump (9), said slush pump (7) and said dedusting fan;
Said dedusting fan also comprises said alarm, is connected to said controller, when receiving said alarm signal, reports to the police.
5. dedusting fan according to claim 4 is characterized in that, said controller, said frequency regulator and said alarm all are arranged in the explosion-proof electric control box (8).
6. dedusting fan according to claim 5; It is characterized in that, also comprise: display is connected to said controller; Be arranged on said explosion-proof electric control box (8) and locate, be used for showing the inflow information and the displacement information of the water level information of said catch basin, said deduster (4).
7. dedusting fan according to claim 5; It is characterized in that; The place also is provided with the switching device of said water pump (9), the switching device of said slush pump (7) and the switching device of said blower fan at said explosion-proof electric control box; All be connected to said controller, control the operation of said water pump (9), said slush pump (7) and said blower fan according to user's switching command.
8. according to each described dedusting fan in the claim 1 to 7; It is characterized in that, also comprise: second liquid level sensor (2) is installed in said water tank (1) and locates; Be used to detect the water level of said water tank (1), and the water level information of detected said water tank (1) is fed back to said controller;
Said controller also is used for when the water level of said water tank (1) is lower than cistern water level minimum definite value, and it is out of service to control said water pump (9), said slush pump (7) and said blower fan.
9. a water system control method that is used for dedusting fan is characterized in that, may further comprise the steps:
Obtain the water level information of the catch basin of deduster in the said dedusting fan;
Water level information according to the said catch basin that obtains; Whether the water level of judging said catch basin is in the predetermined water level scope; If not in said predetermined water level scope, the output frequency of regulating frequency adjuster then, the rotating speed and the slush pump rotating speed of motor of regulating pump motor; With the displacement of regulating said water pump and the inflow of said slush pump, make water level in the said catch basin in said predetermined water level scope.
10. the water system control method that is used for dedusting fan according to claim 9 is characterized in that, also comprises: detect the displacement of the water pump of said dedusting fan, and the inflow that detects the slush pump of said dedusting fan;
According to the displacement of said water pump and the inflow of said slush pump; Calculate the output frequency that the water level in the said catch basin is returned to required frequency regulator in the said predetermined water level scope; With rotating speed and the slush pump rotating speed of motor that said output frequency is regulated pump motor, make water level in the said catch basin in said predetermined water level scope.
11. the water system control method that is used for dedusting fan according to claim 10; It is characterized in that; Also comprise: after the water level in said catch basin returns in the said predetermined water level scope; Continue to regulate the displacement of said water pump and the inflow of said slush pump, making the difference of inflow of displacement and the said slush pump of said water pump is preset value.
12. the water system control method that is used for dedusting fan according to claim 10; It is characterized in that; Also comprise: at the water level of said catch basin during less than preset lowest water level; Perhaps when the water level of said catch basin is higher than preset peak level and surpasses the rising of predetermined amount of time continued; Perhaps when the electric current of the electric current of said pump motor and said slush pump motor surpasses the predetermined current value, perhaps when the inflow of the displacement of the water level information that does not get access to said catch basin, said water pump and said slush pump, it is out of service and report to the police to control the blower fan of said water pump, said slush pump and said dedusting fan.
13. according to each described water system control method that is used for dedusting fan in the claim 10 to 12; It is characterized in that, the first flow sensor is installed, detect the displacement of said water pump at the outlet pipe place of said water pump; Second flow transmitter is installed at water inlet pipe place at said slush pump; Detect the inflow of said slush pump, liquid level sensor is installed at said catch basin place, detect the water level of said catch basin.
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| CN102606188B (en) | 2014-10-01 |
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Effective date of registration: 20160809 Address after: 413000 Yiyang high tech Zone in the eastern part of the New District of integrated services building, Room 502, Hunan Patentee after: Yiyang science and Technology Achievement Transformation Service Center Patentee after: Sany Heavy Equipment Co.,Ltd. Address before: Yansai Lake Street 110027 economic and Technological Development Zone Liaoning city Shenyang province No. 31 Patentee before: Sany Heavy Equipment Co.,Ltd. |