CN112295394A - Measurement conveying system based on SNCR denitration reductant - Google Patents
Measurement conveying system based on SNCR denitration reductant Download PDFInfo
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- CN112295394A CN112295394A CN202011077947.4A CN202011077947A CN112295394A CN 112295394 A CN112295394 A CN 112295394A CN 202011077947 A CN202011077947 A CN 202011077947A CN 112295394 A CN112295394 A CN 112295394A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention discloses a metering and conveying system based on an SNCR (selective non-catalytic reduction) denitration reducing agent, which comprises a feed hopper, a cross frame, a clamping assembly, a conveying auger pipe, a screw rod, a conveying motor, a controller, a data analysis module and a blanking analysis module, wherein the feed hopper is fixedly arranged on the upper side of a support rod, the cross frame is arranged on the upper side of a base, the conveying auger pipe is fixedly arranged on one side of a shell, the conveying motor is assembled in the shell and on the side far away from the conveying auger pipe, the screw rod is connected with the output end of the conveying motor, the screw rod is arranged in the shell, the clamping assembly is arranged on the upper side of the cross frame, and the controller; the data analysis module is used for carrying out data analysis on the conveying information, and the blanking analysis module is used for analyzing the blanking speed; the denitration reducing agent conveying device can accurately control the conveying amount of the denitration reducing agent and the blanking speed of the denitration reducing agent conveying equipment, and avoids deviation of conveying and metering of the denitration reducing agent.
Description
Technical Field
The invention belongs to the technical field of flue gas denitration, relates to a metering conveying technology, and particularly relates to a metering conveying system based on an SNCR denitration reducing agent.
Background
The SNCR denitration technology is a technology which is most widely applied in kiln flue gas denitration engineering in the cement industry at home and abroad, and is characterized in that a reducing agent is sprayed in a proper temperature window under the action of no catalyst to reduce nitrogen oxides in flue gas into harmless water and nitrogen.
In the prior art, the conveying amount of the denitration reducing agent cannot be accurately controlled when the denitration reducing agent is conveyed, and the measurement of the denitration reducing agent is easy to deviate; meanwhile, the blanking speed of the conveying equipment cannot be accurately controlled, and the metering deviation of the denitration reducing agent is easily caused by the abnormal blanking speed; when denitration reducing agent conveying equipment breaks down, because the maintenance resources can not be reasonably and effectively distributed in the current maintenance mode, the denitration reducing agent conveying equipment can not be maintained timely, and the conveying efficiency of the denitration reducing agent is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a metering and conveying system based on an SNCR denitration reducing agent.
The technical problem to be solved by the invention is as follows:
when the denitration reducing agent is conveyed, the conveying amount of the denitration reducing agent cannot be accurately controlled, and the measurement deviation of the denitration reducing agent is easy to exist; meanwhile, the blanking speed of the conveying equipment cannot be accurately controlled, and the metering deviation of the denitration reducing agent is easily caused by the abnormal blanking speed; when denitration reductant conveying equipment breaks down, because the maintenance resource can not be rationally and effectively distributed to current maintenance mode, lead to denitration reductant conveying equipment can not be maintained in time, influenced the conveying efficiency of denitration reductant.
The purpose of the invention can be realized by the following technical scheme:
a metering and conveying system based on an SNCR denitration reducing agent comprises a feed hopper, a supporting rod, a shell, a base and a conveying auger pipe, wherein a fixed plate is arranged on the upper end surface of the base, the supporting rod is fixedly arranged on the upper end surface of the fixed plate, the feed hopper is fixedly arranged on the upper side of the supporting rod, a cross frame is arranged on the upper side of the base, the shell is arranged on the inner side of the supporting rod and positioned at the upper end of the cross frame, and the conveying auger pipe is fixedly arranged on one side of the;
the conveying auger pipe comprises a shell, a conveying motor, a screw rod, a first connecting disc, a second connecting disc, a clamping assembly and a clamping assembly, wherein the conveying motor is assembled at one side, far away from the conveying auger pipe, in the shell, the output end of the conveying motor is connected with the screw rod, the screw rod is installed in the shell, the first connecting disc is installed at one end, far away from the conveying motor, of the shell, the second connecting disc is installed at one end, close to the shell, of the conveying auger pipe, the conveying auger pipe is fixed with the shell through the first connecting disc and the second connecting disc, the screw rod extends into the conveying auger pipe, the clamping assembly is arranged on the upper side of a;
a controller is assembled on one side face of the feed hopper, and the controller comprises a data acquisition module, a display terminal, a data analysis module, a blanking analysis module and a plurality of mobile terminals;
the data acquisition module is used for acquiring the conveying information of the metering conveying system and sending the conveying information to the controller; the data analysis module is used for carrying out data analysis on the transmission information, and the specific analysis process is as follows:
s1: randomly selecting a plurality of time points t, wherein t is 1, … …, n, obtaining the rotating speed of the conveying motor at the time points, marking the rotating speed as Nt, and further obtaining the average rotating speed Np of the conveying motor;
s2: acquiring the screw pitch of the screw rod, and marking the screw pitch as S; acquiring the diameter of a spiral blade on a spiral rod, and marking the diameter of the spiral blade as D;
s3: obtaining a material filling coefficient of the SNCR denitration reducing agent, and marking the material filling coefficient as phi; acquiring the material capacity rho and the inclination coefficient beta of a conveying auger;
s4: the conveying capacity SL of the conveying auger pipe in unit time is calculated by using a formula, and the specific formula is as follows:
s5: acquiring preset working time of a conveying motor, and marking the preset working time as YT; obtaining a preset total conveying amount ZL of the denitration reducing agent by using a formula ZL ═ SL × YT;
s6: sending the calculated preset conveying total quantity ZL to a controller, and obtaining the actual working time of the conveying motor through inverse operation when the rotating speed of the conveying motor is controlled to be unchanged; when the working time of the conveying motor is controlled to be unchanged, the actual working rotating speed of the conveying motor can be obtained through inverse operation;
s7: the preset conveying total amount, the actual working time and the actual working rotating speed are all sent to a display terminal;
the display terminal is used for displaying the measured conveying data of the denitration reducing agent; the blanking analysis module is used for analyzing the blanking speed.
Furthermore, a first connecting hole is formed in the first connecting disc, a second connecting hole is formed in the second connecting disc, the aperture of the second connecting hole is the same as that of the first connecting hole, and a discharge hole is formed in the lower side of the annular side face of the conveying auger pipe.
Further, the feeder hopper lower extreme is provided with the feed opening, the casing upside just is located the below of feed opening and has seted up the rectangle through-hole, the cross-sectional area of rectangle through-hole is greater than the cross-sectional area of feed opening.
Further, clamping assembly includes supporting shoe, mounting panel, curb plate and attaching plate, supporting shoe fixed mounting is at the crossbearer up end, mounting panel fixed mounting is at the supporting shoe up end, the attaching plate is installed to the position that mounting panel upper end and be close to the casing, a side of casing is kept away from to mounting panel upper end and attaching plate installs the curb plate, the curb plate is the vertical form installation with attaching plate.
Further, the specific analysis process of the blanking analysis module is as follows:
SS 1: acquiring the blanking speed of the conveying auger pipe at a plurality of time points t, and marking the blanking speed as St;
SS 2: adding and taking an average value to obtain the average blanking speed Sp of the conveying auger pipe;
SS 3: acquiring a maximum feeding speed Smax and a minimum feeding speed Smin in a plurality of time points t;
SS 4: the blanking speed deviation value SC of the conveying auger pipe is calculated by using a formula, and the specific formula is as follows:
SS 5: and if the blanking speed deviation value SC of the conveying auger pipe exceeds the blanking speed deviation threshold value, generating a blanking abnormal signal and sending the blanking abnormal signal to the controller.
Further, the conveying information comprises the rotating speed of a conveying motor, the feeding amount of the feeding hopper, material level information and material weight.
Compared with the prior art, the invention has the beneficial effects that:
1. the first connecting disc, the first connecting hole, the conveying auger pipe, the second connecting disc and the second connecting hole are matched for use, the holes of the first connecting hole are aligned with the holes of the second connecting hole, and fixing pieces such as fixing bolts and fixing screws are embedded into the first connecting hole and the second connecting hole, so that the conveying auger pipe is conveniently fixed with the shell; the feed hopper, the support rods, the fixed plate pieces, the base, the transverse frame, the support blocks, the mounting plates, the attaching plates, the shell and the side plates are matched for use, the transverse frame is mounted on the upper side inside the base, the shell is arranged on the upper side of the transverse frame, the support blocks are symmetrically mounted on two sides of the shell, and the mounting plates, the side plates and the attaching plates on the upper sides of the support blocks are vertically mounted, so that the attaching plates are firmly attached to the two sides of the shell, and the shell is conveniently mounted on the transverse; through the matching use of the screw rod, the conveying motor and the controller, the conveying motor is electrified to drive the screw rod to rotate in the conveying auger pipe, and the controller accurately controls the rotating speed of the conveying motor, the conveying amount of the screw rod and the blanking speed, so that the denitration reducing agent can be metered and conveyed, and the metering and conveying of the denitration reducing agent are prevented from having deviation;
2. the data analysis module is used for carrying out data analysis on the conveying information, a plurality of time points t are randomly selected, the rotating speed Nt of the conveying motor at the plurality of time points is obtained, the average rotating speed Np of the conveying motor is further obtained, the screw pitch S and the screw blade diameter D of the auger screw rod are obtained, then the material filling coefficient phi of the SNCR denitration reducing agent, the material capacity rho and the inclination coefficient beta of the conveying auger are obtained, and a formula is utilized
Calculating the conveying amount SL of the conveying auger pipe in unit time, acquiring preset working time YT of a conveying motor, obtaining the preset conveying total amount ZL of the denitration reducing agent by using a formula ZL which is SL multiplied by YT, sending the calculated preset conveying total amount ZL to a controller, and obtaining the actual working time of the conveying motor through inverse operation when the rotating speed of the conveying motor is controlled to be unchanged; when the working time of the conveying motor is controlled to be unchanged, the actual working rotating speed of the conveying motor can be obtained through inverse operation, the preset conveying total amount, the actual working time and the actual working rotating speed are all sent to the display terminal, the conveying amount of the denitration reducing agent can be accurately controlled through the design, and the measurement of the denitration reducing agent is prone to deviation;
3. the invention analyzes the blanking speed through the blanking analysis module, obtains the blanking speed St of the conveying auger pipe at a plurality of time points t, adds and takes an average value to obtain the average blanking speed Sp of the conveying auger pipe, obtains the maximum blanking speed Smax and the minimum blanking speed Smin in the plurality of time points t, and utilizes a formula
Calculating to obtain a blanking speed deviation value SC of the conveying auger pipe, and generating a blanking abnormal signal to send if the blanking speed deviation value SC of the conveying auger pipe exceeds a blanking speed deviation threshold valueThe denitration reducing agent is conveyed into a controller, the design can accurately control the blanking speed of the denitration reducing agent conveying equipment, and the metering deviation of the denitration reducing agent caused by the abnormal blanking speed is avoided;
4. the maintenance task of the conveying auger pipe is distributed through the task distribution module, a maintenance worker i in an idle state is obtained, the current maintenance task amount WRi and the total maintenance duration of the conveying auger pipe of the maintenance worker are obtained, the average maintenance duration WPTi of the maintenance worker is obtained by dividing the total maintenance duration by the total maintenance duration, the total maintenance duration WZi and the total maintenance success amount WCi of the conveying auger pipe of the maintenance worker are obtained, the maintenance success rate Ci of the maintenance worker is calculated, and the formula is used for obtaining the maintenance success rate Ci of the maintenance worker
Calculating to obtain a maintenance value Wi of a maintenance worker, then obtaining maintenance experience sharing times Fi, working duration Ti, maintenance price Gi and good evaluation rate Hi of the maintenance worker, establishing a rectangular coordinate system by taking the failed conveying auger pipe as an original point, calculating to obtain a linear distance Ji between the maintenance worker and the failed conveying auger pipe by using a distance formula, and calculating to obtain a linear distance Ji between the maintenance worker and the failed conveying auger pipe by using the formula
The recommended value TJi is obtained through calculation, the screening recommended tables are generated according to descending order of the recommended values, the controller selects the first position of the screening recommended table as a maintenance worker of the fault maintenance task of the conveying auger pipe, and meanwhile, the maintenance total amount of the maintenance worker is increased once.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a front view of an SNCR-based denitration reductant metering delivery system of the present invention;
FIG. 2 is a rear view of an SNCR denitration reductant-based metering delivery system of the present invention;
FIG. 3 is an exploded view of an SNCR denitration reductant-based metering delivery system of the present invention;
FIG. 4 is a top view of a feed hopper in an SNCR denitration reductant-based metering delivery system of the present invention;
fig. 5 is a system block diagram of a metering delivery system based on an SNCR denitration reducing agent.
In the figure: 1. a feed hopper; 2. a support bar; 3. a housing; 4. fixing the plate; 5. a base; 6. a cross frame; 7. a clamping assembly; 71. a support block; 72. mounting a plate; 73. a side plate; 74. attaching a plate; 8. conveying the auger pipe; 9. a first splice tray; 91. a first connection hole; 10. a screw rod; 11. a second connecting disc; 111. a second connection hole; 12. a conveying motor; 13. and a controller.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a metering and conveying system based on SNCR denitration reducing agent comprises a feed hopper 1, a support rod 2, a shell 3, a base 5 and a conveying auger pipe 8, wherein the upper end surface of the base 5 is provided with a fixed plate 4, the upper end surface of the fixed plate 4 is fixedly provided with the support rod 2, the upper side of the support rod 2 is fixedly provided with the feed hopper 1, the upper side of the base 5 is provided with a cross frame 6, the shell 3 is arranged on the inner side of the support rod 2 and positioned at the upper end of the cross frame 6, and one side of the shell 3 is fixedly provided with the conveying auger pipe 8;
a conveying motor 12 is assembled inside the shell 3 and on one side far away from the conveying auger pipe 8, the output end of the conveying motor 12 is connected with a screw rod 10, the screw rod 10 is installed inside the shell 3, a first connecting disc 9 is installed at one end, far away from the conveying motor 12, of the shell 3, a second connecting disc 11 is installed on the first connecting disc 9, the second connecting disc 11 is installed at one end, close to the shell 3, of the conveying auger pipe 8, the conveying auger pipe 8 is fixed with the shell 3 through the first connecting disc 9 and the second connecting disc 11, the screw rod 10 extends into the conveying auger pipe 8, a clamping assembly 7 is arranged on the upper side of the cross frame 6, and the clamping assemblies 7 are symmetrically arranged on two sides of the shell 3;
a controller 13 is assembled on one side surface of the feed hopper 1, and the controller 13 comprises a data acquisition module, a display terminal, a data analysis module, a blanking analysis module and a plurality of mobile terminals;
the data acquisition module is used for acquiring the conveying information of the metering conveying system and sending the conveying information to the controller 13; the data analysis module is used for carrying out data analysis on the transmission information, and the specific analysis process is as follows:
s1: randomly selecting a plurality of time points t, t being 1, … …, n, obtaining the rotating speed of the conveying motor 12 at the time points, marking the rotating speed as Nt, and further obtaining the average rotating speed Np of the conveying motor 12;
s2: acquiring the screw pitch of the screw rod 10, and marking the screw pitch as S; acquiring the diameter of a spiral blade on the spiral rod 10, and marking the diameter of the spiral blade as D;
s3: obtaining a material filling coefficient of the SNCR denitration reducing agent, and marking the material filling coefficient as phi; acquiring the material capacity rho and the inclination coefficient beta of a conveying auger;
s4: the conveying capacity SLt/h of the conveying auger pipe 8 in unit time is calculated by using a formula, and the specific formula is as follows:
s5: acquiring the preset working time of the conveying motor 12, and marking the preset working time as YT; obtaining a preset total conveying amount ZL of the denitration reducing agent by using a formula ZL ═ SL × YT;
s6: sending the calculated preset conveying total amount ZL to the controller 13, and obtaining the actual working time of the conveying motor 12 through inverse operation when the rotating speed of the conveying motor 12 is controlled to be unchanged; when the working time of the conveying motor 12 is controlled to be unchanged, the actual working rotating speed of the conveying motor 12 can be obtained through inverse operation;
s7: the preset conveying total amount, the actual working time and the actual working rotating speed are all sent to a display terminal;
the display terminal is used for displaying the measured conveying data of the denitration reducing agent; the blanking analysis module is used for analyzing the blanking speed, and the specific analysis process is as follows:
SS 1: obtaining the blanking speed of the conveying auger pipe 8 at a plurality of time points t, and marking the blanking speed as St;
SS 2: adding and taking an average value to obtain the average blanking speed Sp of the conveying auger pipe 8;
SS 3: acquiring a maximum feeding speed Smax and a minimum feeding speed Smin in a plurality of time points t;
SS 4: the blanking speed deviation value SC of the conveying auger pipe 8 is calculated by using a formula, and the specific formula is as follows:
SS 5: if the blanking speed deviation value SC of the conveying auger pipe 8 exceeds the blanking speed deviation threshold value, a blanking abnormal signal is generated and sent to the controller 13.
Wherein, first connection hole 91 has been seted up to first connection pad 9 inside, second connection pad 11 is inside to be seted up second connecting hole 111, and second connecting hole 111 is the same with first connecting hole 91 aperture, the discharge gate has been seted up to 8 annular side undersides of transport auger pipe.
Wherein, 1 lower extreme of feeder hopper is provided with the feed opening, 3 upsides of casing and the below that is located the feed opening have seted up the rectangle through-hole, the cross-sectional area of rectangle through-hole is greater than the cross-sectional area of feed opening.
Wherein, clamping component 7 includes supporting shoe 71, mounting panel 72, curb plate 73 and rigging plate 74, supporting shoe 71 fixed mounting is at crossbearer 6 up end, mounting panel 72 fixed mounting is at supporting shoe 71 up end, the position that mounting panel 72 upper end and be close to casing 3 installs rigging plate 74, a curb plate 73 is installed to a side that casing 3 was kept away from to mounting panel 72 upper end and rigging plate 74, curb plate 73 is the vertical installation with rigging plate 74.
Wherein, the conveying information comprises the rotating speed of the conveying motor 12, the feeding amount of the feeding hopper 1, the material level information and the material weight.
The system also comprises a task distribution module, wherein the task distribution module is used for conveying maintenance tasks of the auger pipe 8 for distribution, and the specific distribution process is as follows:
s1: acquiring a maintenance worker in an idle state, and marking the maintenance worker in the idle state as i, i is 1, … …, n;
s2: acquiring the current maintenance task amount of maintenance personnel, and marking the current maintenance task amount as WRi; acquiring the total maintenance time of the conveying auger pipe 8 of a maintenance worker, and dividing the total maintenance time by the total maintenance time to obtain the average maintenance time WPTi of the maintenance worker;
s3: acquiring WZi total maintenance quantity of the conveying auger pipe 8 and WCi maintenance success quantity of the conveying auger pipe 8 of a maintenance worker, and calculating to obtain a maintenance success rate Ci of the maintenance worker;
s4: and calculating a maintenance value Wi of the maintenance personnel by using a formula, wherein the specific formula is as follows:
s5: obtaining maintenance experience sharing times of maintenance personnel, and marking the maintenance experience sharing times as Fi; acquiring the job time Ti, the maintenance price Gi and the favorable rating Hi of a maintenance worker;
s6: establishing a rectangular coordinate system by taking the failed conveying auger pipe 8 as an original point, and calculating a linear distance Ji between a maintenance worker and the failed conveying auger pipe 8 by using a distance formula;
s7: the recommended value TJi is calculated by using a formula, and the specific calculation formula is as follows:
s8: and (4) generating a screening recommendation table according to the descending order of the recommended values, selecting the first position of the screening recommendation table as a maintenance worker of the fault maintenance task of the conveying auger pipe 8 by the controller 13, and increasing the maintenance total amount of the maintenance worker once.
A metering conveying system based on an SNCR (selective non catalytic reduction) denitration reducing agent is characterized in that when the metering conveying system works, a first connecting disc 9, a first connecting hole 91, a conveying auger pipe 8, a second connecting disc 11 and a second connecting hole 111 are matched for use, holes of the first connecting hole 91 and the second connecting hole 111 are aligned, fixing pieces such as fixing bolts and fixing screws are embedded into the first connecting hole 91 and the second connecting hole 111, and the conveying auger pipe 8 and a shell 3 are conveniently fixed; through the matching use of the feed hopper 1, the support rod 2, the fixed plate 4, the base 5, the cross frame 6, the support block 71, the mounting plate 72, the attaching plate 74, the shell 3 and the side plate 73, the cross frame 6 is mounted on the upper side inside the base 5, the shell 3 is arranged on the upper side of the cross frame 6, the support blocks 71 are symmetrically mounted on two sides of the shell 3, and the mounting plate 72, the side plate 73 and the attaching plate 74 on the upper side of the support block 71 are vertically mounted, so that the attaching plate 74 is firmly attached to two sides of the shell 3, and the shell 3 is conveniently mounted on the cross frame 6; through the matching use of the screw rod 10, the conveying motor 12 and the controller 13, the conveying motor 12 is electrified to drive the screw rod 10 to rotate in the conveying auger pipe 8, and the controller 13 accurately controls the rotating speed of the conveying motor 12, the conveying amount of the screw rod 10 and the blanking speed, so that the denitration reducing agent can be metered and conveyed, and the deviation of the metering and conveying of the denitration reducing agent is avoided;
the data analysis module is used for carrying out data analysis on the conveying information, randomly selecting a plurality of time points t, obtaining the rotating speed Nt of the conveying motor 12 at the plurality of time points, further obtaining the average rotating speed Np of the conveying motor 12, obtaining the screw pitch S and the screw blade diameter D of the screw rod 10, and then obtaining the material filling coefficient phi of the SNCR denitration reducing agent and conveying the SNCR denitration reducing agentThe material capacity rho and the inclination coefficient beta of the packing auger are calculated by using a formula
Calculating the conveying amount SL of the conveying auger pipe 8 in unit time, acquiring preset working time YT of the conveying motor 12, obtaining the preset conveying total amount ZL of the denitration reducing agent by using a formula ZL which is SL multiplied by YT, sending the calculated preset conveying total amount ZL to the controller 13, and obtaining the actual working time of the conveying motor 12 through inverse operation when the rotating speed of the conveying motor 12 is controlled to be unchanged; when the working time of the conveying motor 12 is controlled to be unchanged, the actual working rotating speed of the conveying motor 12 can be obtained through inverse operation, and the preset conveying total amount, the actual working time and the actual working rotating speed are all sent to the display terminal;
the blanking analysis module is used for analyzing the blanking speed, the blanking speed St of the conveying auger pipe 8 at a plurality of time points t is obtained, the average value is added to obtain the average blanking speed Sp of the conveying auger pipe 8, the maximum blanking speed Smax and the minimum blanking speed Smin in the plurality of time points t are obtained, and a formula is utilized
Calculating to obtain a blanking speed deviation value SC of the conveying auger pipe 8, and if the blanking speed deviation value SC of the conveying auger pipe 8 exceeds a blanking speed deviation threshold value, generating a blanking abnormal signal and sending the signal to the controller 13;
distributing maintenance tasks of the conveying auger pipe 8 through the task distribution module, acquiring maintenance personnel i in an idle state, acquiring the current maintenance task amount WRi of the maintenance personnel and the total maintenance time length of the conveying auger pipe 8, dividing the total maintenance time length by the total maintenance time length to obtain the average maintenance time length WPTi of the maintenance personnel, acquiring the total maintenance amount WZi of the conveying auger pipe 8 and the total maintenance work amount WCi of the conveying auger pipe 8 of the maintenance personnel, calculating the maintenance success rate Ci of the maintenance personnel, and utilizing a formula
Calculating to obtain a maintenance value Wi of the maintenance personnel, and then acquiring the maintenance of the maintenance personnelThe repair experience sharing times Fi, the working time Ti, the repair price Gi and the good evaluation rate Hi are calculated, a rectangular coordinate system is established by taking the failed conveying auger pipe 8 as an original point, the linear distance Ji between a maintainer and the failed conveying auger pipe 8 is calculated by using a distance formula, and the formula is used for calculating
And (4) calculating to obtain a recommended value TJi, arranging in descending order according to the recommended value to generate a screening recommended table, selecting the first position of the screening recommended table as a maintenance worker of the fault maintenance task of the conveying auger pipe 8 at this time by the controller 13, and increasing the maintenance total amount of the maintenance worker once.
The above formulas are all quantitative calculation, the formula is a formula obtained by acquiring a large amount of data and performing software simulation to obtain the latest real situation, and the preset parameters in the formula are set by the technical personnel in the field according to the actual situation.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. A metering and conveying system based on an SNCR denitration reducing agent comprises a feed hopper (1), a support rod (2), a shell (3), a base (5) and a conveying auger pipe (8), and is characterized in that a fixed plate (4) is installed on the upper end face of the base (5), the support rod (2) is fixedly installed on the upper end face of the fixed plate (4), the feed hopper (1) is fixedly installed on the upper side of the support rod (2), a cross frame (6) is installed on the upper side of the base (5), the shell (3) is installed on the inner side of the support rod (2) and is positioned at the upper end of the cross frame (6), and the conveying auger pipe (8) is fixedly installed on one side of the shell (3);
a conveying motor (12) is assembled at one side of the inner part of the shell (3) far away from the conveying auger pipe (8), the output end of the conveying motor (12) is connected with a screw rod (10), the screw rod (10) is arranged in the shell (3), a first connecting disc (9) is arranged at one end of the shell (3) far away from the conveying motor (12), the first connecting disc (9) is provided with a second connecting disc (11), the second connecting disc (11) is arranged at one end of the conveying auger pipe (8) close to the shell (3), the conveying auger pipe (8) is fixed with the shell (3) through a first connecting disc (9) and a second connecting disc (11), the screw rod (10) extends into the conveying auger pipe (8), the clamping components (7) are arranged on the upper side of the cross frame (6), and the clamping components (7) are symmetrically arranged on two sides of the shell (3);
a controller (13) is assembled on one side surface of the feed hopper (1), and the controller (13) comprises a data acquisition module, a display terminal, a data analysis module, a blanking analysis module and a plurality of mobile terminals;
the data acquisition module is used for acquiring the conveying information of the metering conveying system and sending the conveying information to the controller (13); the data analysis module is used for carrying out data analysis on the transmission information, and the specific analysis process is as follows:
s1: randomly selecting a plurality of time points t, wherein t is 1, … …, n, obtaining the rotating speed of the conveying motor (12) at the time points, marking the rotating speed as Nt, and further obtaining the average rotating speed Np of the conveying motor (12);
s2: acquiring the screw pitch of the screw rod (10), and marking the screw pitch as S; acquiring the diameter of a spiral blade on a spiral rod (10), and marking the diameter of the spiral blade as D;
s3: obtaining a material filling coefficient of the SNCR denitration reducing agent, and marking the material filling coefficient as phi; acquiring the material capacity rho and the inclination coefficient beta of a conveying auger;
s4: the conveying capacity SL of the conveying auger pipe (8) in unit time is calculated by using a formula, and the specific formula is as follows:
S5: acquiring preset working time of a conveying motor (12), and marking the preset working time as YT; obtaining a preset total conveying amount ZL of the denitration reducing agent by using a formula ZL ═ SL × YT;
s6: sending the calculated preset conveying total quantity ZL to a controller (13), and obtaining the actual working time of the conveying motor (12) through inverse operation when the rotating speed of the conveying motor (12) is controlled to be unchanged; when the working time of the conveying motor (12) is controlled to be unchanged, the actual working rotating speed of the conveying motor (12) can be obtained through inverse operation;
s7: the preset conveying total amount, the actual working time and the actual working rotating speed are all sent to a display terminal;
the display terminal is used for displaying the measured conveying data of the denitration reducing agent; the blanking analysis module is used for analyzing the blanking speed.
2. The SNCR denitration reducing agent-based metering and conveying system according to claim 1, wherein a first connecting hole (91) is formed in the first connecting disc (9), a second connecting hole (111) is formed in the second connecting disc (11), the second connecting hole (111) and the first connecting hole (91) are the same in aperture, and a discharge hole is formed in the lower side of the annular side face of the conveying auger pipe (8).
3. The SNCR denitration reducing agent-based metering and conveying system according to claim 1, characterized in that a feed opening is arranged at the lower end of the feed hopper (1), a rectangular through hole is arranged at the upper side of the shell (3) and below the feed opening, and the cross-sectional area of the rectangular through hole is larger than that of the feed opening.
4. The SNCR denitration reducing agent-based metering and conveying system according to claim 1, wherein the clamping assembly (7) comprises a supporting block (71), a mounting plate (72), a side plate (73) and a joint plate (74), the supporting block (71) is fixedly mounted on the upper end face of the cross frame (6), the mounting plate (72) is fixedly mounted on the upper end face of the supporting block (71), the joint plate (74) is mounted at the upper end of the mounting plate (72) and close to the position of the shell (3), the side plate (73) is mounted at the upper end of the mounting plate (72) and on one side face, away from the shell (3), of the joint plate (74), and the side plate (73) and the joint plate (74) are vertically mounted.
5. The SNCR denitration reducing agent-based metering and conveying system according to claim 4, wherein the specific analysis process of the blanking analysis module is as follows:
SS 1: obtaining the blanking speed of the conveying auger pipe (8) at a plurality of time points t, and marking the blanking speed as St;
SS 2: adding and taking an average value to obtain the average blanking speed Sp of the conveying auger pipe (8);
SS 3: acquiring a maximum feeding speed Smax and a minimum feeding speed Smin in a plurality of time points t;
SS 4: the blanking speed deviation value SC of the conveying auger pipe (8) is calculated by using a formula, and the specific formula is as follows:
SS 5: if the blanking speed deviation value SC of the conveying auger pipe (8) exceeds the blanking speed deviation threshold value, a blanking abnormal signal is generated and sent to the controller (13).
6. The SNCR denitration reducing agent-based metering conveying system according to claim 4, wherein the conveying information comprises the rotating speed of a conveying motor (12), the feeding amount of a feeding hopper (1), material level information and material weight.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011077947.4A CN112295394A (en) | 2020-10-10 | 2020-10-10 | Measurement conveying system based on SNCR denitration reductant |
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| CN202011077947.4A CN112295394A (en) | 2020-10-10 | 2020-10-10 | Measurement conveying system based on SNCR denitration reductant |
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| CN112295394A true CN112295394A (en) | 2021-02-02 |
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| CN202011077947.4A Withdrawn CN112295394A (en) | 2020-10-10 | 2020-10-10 | Measurement conveying system based on SNCR denitration reductant |
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Cited By (1)
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