CN105966934A

CN105966934A - High-safety coal conveying system in power station

Info

Publication number: CN105966934A
Application number: CN201610606796.4A
Authority: CN
Inventors: 杨炳
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-27
Filing date: 2016-07-27
Publication date: 2016-09-28

Abstract

A high-safety coal conveying system in a power station is characterized by comprising a crude coal hopper, a plurality of coal transfer stations, a conveying belt, spray drying nozzles, water spraying nozzles and a water supply pump. The conveying belt penetrates through the coal transfer stations and conveys coal to the crude coal hopper. The water spraying nozzles are arranged above the conveying belt of the coal transfer stations, water is supplied to the water spraying nozzles by the water supply pump, and the water spraying nozzles are controlled by water spraying valves. The spray drying nozzles are arranged above the conveying belt of the coal transfer stations in the same way, dry compressed air is introduced into the spray drying nozzles, and the spray drying nozzles are controlled by spray valves. A temperature sensor and a humidity sensor which are used for detecting the temperature and humidity of coal are arranged on the conveying belt. The water spraying valves and the spray valves control the water spraying amount and the spray amount according to the feedback values of the detected temperature and humidity, thereby controlling the temperature and humidity of coal.

Description

Coal handling system in the station, electric station of a kind of high security

Technical field

The present invention relates to Shu Mei field, electric station, be specifically related to coal handling system in the station, electric station of a kind of high security.

Background technology

The coal conveying of electric station, often by multiple coal terminals, is transported in raw coal bucket by belt conveyor.But now Coal terminal tend not to coal therein is processed, the especially control of temperature and humidity, and a simply simple room , there is certain improvement space in son.

Summary of the invention

For the problems referred to above, the present invention provides coal handling system in the station, electric station of a kind of high security.

The purpose of the present invention realizes by the following technical solutions:

Coal handling system in the station, electric station of a kind of high security, including raw coal bucket, multiple coal terminal, belt conveyor, spray dried Dry nozzle, spray nozzle and feed pump；Described belt conveyor passes multiple coal terminals, and coal is delivered to raw coal bucket；Described spray (operating) water nozzle is arranged on above the belt conveyor of coal terminal, and it is supplied water by feed pump, and is controlled by water injection valve；Described spray dried Dry nozzle is similarly disposed at above the belt conveyor of coal terminal, and it is passed through dry compressed air, and is controlled by spray valve； Temperature sensor and humidity sensor, water injection valve and the spray of temperature and humidity for detecting coal it is additionally provided with on described belt conveyor Mist valve controls injection flow rate and spray amount according to the temperature and humidity value of feedback detected, thus controls the temperature and humidity of coal.

Beneficial effect: by arranging water spray and spray-drying installation in coal terminal so that the temperature and humidity of the coal of each section The most controlled, it is ensured that the quality of the coal of input raw coal bucket, be conducive to burning and reduce coal consumption, the most simple and reliable for structure.

Accompanying drawing explanation

The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not constitute any limitation of the invention, for Those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtains the attached of other according to the following drawings Figure.

Fig. 1 is the overall structure schematic diagram of the present invention；

Fig. 2 is the overall structure schematic diagram of belt conveyor；

Fig. 3 is the mechanical mechanism overall schematic of belt break protection device；

Fig. 4 is the structural representation of hydraulic control system；

Fig. 5 is the front view of belt break protection device；

Fig. 6 is the cross sectional plan view of belt break protection device；

Fig. 7 is upper voussoir motion schematic diagram in the case of two kinds of actions.

Reference: drive cylinder-9；Belt-10；Carrying roller-11；Belt break protection device-12；Frame-13；Pull bar-14；Turn Axle-15；Upper voussoir-16；First chute-17；Lower wedge block-18；Voussoir body-19；Projection-20；Hydraulic cylinder-21；Accumulator -22；Electro-hydraulic reversing valve-23；Two-bit triplet reversing solenoid valve-24；Relief valve-25；Hydraulic oil pump-26；Rod chamber-27；Nothing Bar chamber-28；Overflow valve-29；Second chute-30；Block piece-31；Emergent voussoir-32；Minitype cylinder-33；Breech block-34； Draw-in groove-35；Contact site-36；Holding section-37；Locking groove-38；Control valve-39；Locking connecting rod-40；Flexible pipe-41；Shell -42；Coil-43；Giant magnetostrictive rod-44；Distance rod-45；Fixing bar-46；Raw coal bucket-100；Coal terminal-200；Defeated Send belt-300；It is spray-dried nozzle-400；Spray nozzle-500；Feed pump-600；Water injection valve-700；Spray valve-800； Temperature sensor-900；Humidity sensor-1000.

Detailed description of the invention

The invention will be further described with the following Examples.

Application scenarios 1:

Coal handling system in the station, electric station of a kind of high security as shown in Figure 1, including raw coal bucket 100, multiple coal terminal 200, Belt conveyor 300, spray drying nozzle 400, spray nozzle 500 and feed pump 600；Described belt conveyor 300 is through multiple Coal terminal 200, is delivered to raw coal bucket 100 by coal；Described spray nozzle 500 is arranged on the belt conveyor of coal terminal 200 Above in the of 300, it is supplied water by feed pump 600, and is controlled by water injection valve 700；Described spray drying nozzle 400 is arranged equally Above the belt conveyor 300 of coal terminal 200, it is passed through dry compressed air, and is controlled by spray valve 800；Institute State temperature sensor 900 and the humidity sensor 1000 being additionally provided with the temperature and humidity for detecting coal on belt conveyor 300, Water injection valve 700 and spray valve 800 control injection flow rate and spray amount according to the temperature and humidity value of feedback detected, thus control The temperature and humidity of coal.

The present invention is by arranging water spray and spray-drying installation in coal terminal so that the temperature and humidity of the coal of each section all may be used Control, it is ensured that the quality of the coal of input raw coal bucket, is conducive to burning and reduces coal consumption, the most simple and reliable for structure.

Preferably, it is additionally provided with acoustic-control illuminating in described coal terminal 200.

Preferably, it is additionally provided with on-site control (not shown) in described coal terminal 200.

Preferably, as in figure 2 it is shown, belt conveyor 300 include being driven by Rolling motor driving cylinder 9, belt 10, carrying roller 11, tensioner and belt break protection device 12, drives cylinder 9 for providing driving force for belt 10, and carrying roller 11 is for skin Band 10 carries and supports, and tensioner uses tensioning dolly (prior art, figure not shown in) tensioning.Long distance delivery One of maximum accident that belt vibration causes is exactly broken belt, it is therefore necessary to arrange broken belt protector.Multiple belt break protection devices 12 are used for Protection when belt 10 occurs broken belt, it includes broken belt actuator, hydraulic control system, multi signal control system and standby Breakage protection system, as it is shown on figure 3, broken belt actuator include frame 13, pull bar 14, rotating shaft 15, upper voussoir 16, One chute 17 and lower wedge block 18, frame 13 has 2 and is arranged symmetrically in the both sides of belt 10, and rotating shaft 15 is arranged on 2 machines Between frame, it is free to rotate.First chute 17 be arranged in frame 13 and and belt 10 between angle be 15 ° of (these Even if time upper voussoir 16 be in free state and also will not go up voussoir 16 sliding along the second chute 30 along the first chute 17 landing simultaneously When falling, the vibration force to frame 13 is less than the 20% of permissible value (being determined by experiment)), upper voussoir 16 includes voussoir body 19 Be arranged on the projection 20 at voussoir body 19 two ends, projection 20 is placed through the first chute 17, voussoir body 19 (see Fig. 7) Lower surface be parallel to each other with belt 10 place plane.Lower wedge block 18 is arranged on the underface of the first chute 17 end and is positioned at skin Under band 10.

As shown in Figure 4, hydraulic control system includes that hydraulic cylinder 21, accumulator 22, electro-hydraulic reversing valve 23, two-bit triplet commutate Electromagnetic valve 24, relief valve 25 and hydraulic oil pump 26, hydraulic cylinder 21 is connected with upper voussoir 16 by pull bar 14, and pull bar 14 Through rotating shaft 15.Hydraulic oil pump 26 is connected with rod chamber 27 and the electro-hydraulic reversing valve 23 of hydraulic cylinder 21 respectively by non-return valve, Accumulator 22 is connected on the outlet conduit of hydraulic oil pump 26 by electro-hydraulic reversing valve 23, the entrance of two-bit triplet electromagnetic valve 24 Being connected with electro-hydraulic reversing valve 23,2 outlets are connected with rod chamber 27 and rodless cavity 28 respectively.The rod chamber 27 of hydraulic cylinder 21 Push back oily pipeline with being also respectively provided with a road on the oil feed line of rodless cavity 28 to nothing, this pipeline is respectively arranged with relief valve 25, relief valve 25 remains turned-off time normal, opens relief valve 25 when standby breakage protection system starts and (builds the pressure to reduce Impact, relief valve 25 pressure release of rodless cavity 28 side can be opened when scuffing of cylinder bore 14 shrinks；Can beat when otherwise pull bar 14 stretches out Open relief valve 25 pressure release of rod chamber 27 side).Overflow valve 29 also it is parallel with on hydraulic oil pump 26.Belt conveyor 300 is normally In running, accumulator 22 passes through electro-hydraulic reversing valve 23 and two-bit triplet reversing solenoid valve 24 to the rod chamber of hydraulic cylinder 21 27 fuel feeding (position of the electro-hydraulic reversing valve 23 shown in Fig. 4 be accumulator 22 oil-filled time position), hydraulic cylinder 21 is in contracting The state of returning；When there is broken belt, the position of switching two-bit triplet reversing solenoid valve 24, accumulator 22 is by electro-hydraulic reversing valve 23 With two-bit triplet reversing solenoid valve 24 to rodless cavity 28 fuel feeding, pull bar 14 is pushed out thus drives voussoir 16 to move downwardly to The end of the first chute 17, locks belt 10 at upper voussoir 16 under the common effect of lower wedge block 18；When pull bar 14 needs contracting Hui Shi, hydraulic oil pump 26 starts provides pressure oil to rod chamber 27, and the position of switching electro-hydraulic reversing valve 23 is to accumulator simultaneously 22 topping ups, when system pressure reaches setting value, hydraulic oil pump 26 is out of service, enters packing stage, now accumulator 22 Play the effect of replenishment system leakage.This hydraulic control system hydraulic oil pump 26 when hydraulic cylinder 21 action is idle, only Hydraulic oil pump 26 need to be started when hydraulic cylinder 21 is retracted, it is achieved that short time duty, reach energy-conservation effect.

As shown in Fig. 3,5,6, standby breakage protection system is independent of hydraulic control system, and it includes the second chute 30, stops Part 31, emergent voussoir 32, minitype cylinder 33, Breech block 34 and super mangneto tensioning system.Second chute 30 is arranged on frame It is connected on 13 and with the first chute 17, and it is positioned at voussoir 16 top dead center position, and (i.e. hydraulic cylinder 21 shrinks on when putting in place The position of voussoir 16) lower section, two sides of the second chute 30 are parallel to each other with two sides of upper voussoir 16, and always Extend in the plane at belt 10 place, two sides of the second chute 30 are protruding with two draw-in grooves 35 the most laterally. Block piece 31 is positioned at when standby breakage protection system is not operating in second chute 30, and it includes contact site 36 and holding section 37, The upper surface of contact site 36 has an angle of inclination identical with the first chute 17, and is in close contact with the lower surface of upper voussoir 16. Holding section 37 is fastened in draw-in groove 35, and the left end of holding section 37 be provided with Breech block 34 with the use of locking groove 38. The minitype cylinder 33 supplied by control valve 39 is inlayed and is fixed in frame 13, and the piston of minitype cylinder 33 passes through locking connecting rod 40 are connected with Breech block 34, and Breech block 34 is arranged in the hollow interlayer (not shown) of frame 13, and Breech block 34 Thickness less than the thickness of locking groove 38.The steam line of minitype cylinder 33 uses the flexible pipe 41 of band surplus length to connect, and is used for When in guarantee, voussoir 16 falls into the second chute 30, flexible pipe 41 is not intended to the motion of voussoir.Emergent voussoir 32 is parallel to lower wedge block 18 are arranged, and are positioned at the lower section of the second chute 30.Super mangneto tensioning system includes shell 42, coil 43, giant magnetostrictive rod 44 and distance rod 45, shell 42 is by fixing bar 46 fixing (can be fixed on ground or crane span structure), and coil 43 and super mangneto are stretched Contracting rod 44 is arranged in shell 42, and giant magnetostrictive rod 44 is sleeved in coil 43.One end of giant magnetostrictive rod 44 Being fixed on the diapire of shell 42, the other end is affixed with distance rod 45, the other end of distance rod 45 and the side of block piece 31 Affixed.The limit collapsing length of giant magnetostrictive rod 44 is more than block piece 31 and the thickness sum of projection, is used for ensureing standby breaking During band protection system acting, upper voussoir 16 can landing smoothly.When standby breakage protection system is not operating, coil 43 is passed through so that The directional current (i.e. ensureing the flow direction axis direction along giant magnetostrictive rod 44) of giant magnetostrictive rod 44 elongation, resistance Block piece 31 is fastened in the second chute 30, and Breech block 34 inserts in locking groove 38 under the control of minitype cylinder 33, is used for Prevent from making upper voussoir 16 along the landing by mistake of the second chute 30 because super mangneto tensioning system misoperation causes block piece 31 to pull out.When standby During with breakage protection system action, first multi signal controller sends a signal to control valve 39, and control valve 39 controls minitype cylinder The piston of 33 moves out so that Breech block 34 departs from locking groove 38, and opens relief valve 25 and make rod chamber 27 and rodless cavity The oil pressure of 28 is laid down, and makes voussoir 16 be in free state, and multi signal controller sends a signal to the power supply of coil 43 and opens simultaneously Closing cutting line circle 43 electric current, now giant magnetostrictive rod 44 shortens because losing driving electric current, and block piece 36 is drawn out, on Voussoir 16 falls into the second chute 30 in the effect of own wt, and eventually falls in the top of emergent voussoir 32, upper voussoir 16 Locking belt 10 is jointly acted on emergent voussoir 32.Owing to doing the micro-arc-shaped of approximation along rotating shaft 15 when upper voussoir 16 falls Curvilinear motion, the width of voussoir 32 of therefore meeting an urgent need should be more than the width of lower wedge block 18 to ensure upper voussoir 16 and emergent voussoir 32 have enough contacts area, and the width of the second chute 30 should be sufficiently wide simultaneously, to ensure that upper voussoir 16 can fall also smoothly Contact with emergent voussoir 32, but in fact come relative to the weight of upper voussoir 16 due to the weight of hydraulic cylinder 21 and pull bar 14 Saying it is the least, inventor finds in fact to go up the track very near linear that voussoir 16 falls in an experiment, the position foot after falling To ensure upper to have enough contact surfaces between voussoir 16 and emergent voussoir 32, as long as and the weight of upper voussoir 16 is enough, even if Whereabouts curve slightly deviation, under fall behind in and under the weight effect of voussoir 16, also can be automatically adjusted the lower surface ensureing upper voussoir 16 Can meet an urgent need voussoir 32 by flat contact.Fig. 7 gives movement line during voussoir 16 action.

In the present embodiment, (1) devises new hydraulic control system, and this hydraulic control system is hydraulic pressure when hydraulic cylinder 21 action Oil pump 26 is idle, it is only necessary to starts hydraulic oil pump 26 when hydraulic cylinder 21 is retracted, it is achieved that short time duty, reaches Energy-conservation effect；(2) have developed a set of standby breakage protection system independent of hydraulic control system, if single dependence hydraulic pressure The thrust of cylinder 21 realizes voussoir 16 and lower wedge block 18 locks belt 10, although substantially can meet the requirement of broken belt protector, But certain parts once in hydraulic system (such as hydraulic cylinder 21 or oil pipe line) fault, belt conveyor generation broken belt fault Time will be unable to be protected, when especially there is non-dominant hydraulic control system fault, operations staff is not easy to discover, and waits until Broken belt has had little time when occurring to process hydraulic system fault, and this will bring the biggest potential hazard to the operation of belt conveyor, and Arranging of standby breakage protection system can effectively solve this problem；First chute be arranged in frame and and belt between angle be 15 °, upper voussoir 16 along during the second chute 30 landing to the vibration force of frame 13 less than the 20% of permissible value.(3) super magnetic is used Causing tensioning system and realize the action of broken belt protector, action is the sensitiveest, can effectively contract and protect short movement time；Also set up simultaneously Breech block 34 prevents the misoperation of super mangneto tensioning system, effectively reduces the malfunction of system.

Preferably, in order to prevent from judging by accident the generation of broken belt, multi signal controller receives the current signal of Rolling motor, tensioning simultaneously The tension signal of device, tensioning dolly position signalling and the tach signal of belt 10, when 4 kinds of signals all exceed respective setting value Time, send a signal to two-bit triplet reversing solenoid valve 24 and start hydraulic control system to drive upper voussoir 16 to stretch out, after time delay, Received the position signalling of upper voussoir 16 by the displacement sensor that is arranged on upper voussoir 16, it is judged that upper voussoir 16 the most in position time Send a signal to control valve 39, relief valve 25 and the on and off switch of coil 43 respectively, start standby breakage protection system.

In the present embodiment, use multi signal to carry out trigger protection device, be connected hydraulic control system by displacement transducer simultaneously With standby breakage protection system, reliable in action is efficient.

Preferably due to during standby breakage protection system action, upper voussoir 16 is the circuit whereabouts along near linear, therefore to machine The vibration of frame 13 is much bigger than when falling along the first chute 17, so doing following setting: assume total N number of broken belt protector dress Put, during the most standby breakage protection system action, first trigger the n-th standby breakage protection system action the most simultaneously, wherein n be odd number and n+1≤N；After time delay 2s, trigger (n+1)th standby breakage protection system action simultaneously.In other words, the standby broken belt of singular item The action of protection system elder generation, the standby breakage protection system of action even item then, the most both met the demand of protection, and can prevent again Only excessive vibration disposable to frame 13 causes frame 13 to deform even rupturing.

In the present embodiment, it is contemplated that vibration force to frame 13 during standby breakage protection system action, the side of action in batches is used Formula reduces vibration force, not only ensure that protection reliability but also reduce the damage to frame 13.

Application scenarios 2:

Preferably, as in figure 2 it is shown, belt conveyor 300 include being driven by Rolling motor driving cylinder 9, belt 10, carrying roller 11, tensioner and belt break protection device 12, drives cylinder 9 for providing driving force for belt 10, and carrying roller 11 is for skin Band 10 carries and supports, and tensioner uses tensioning dolly (prior art, figure not shown in) tensioning.Long distance delivery One of maximum accident that belt vibration causes is exactly broken belt, it is therefore necessary to arrange broken belt protector.Multiple belt break protection devices 12 are used for Protection when belt 10 occurs broken belt, it includes broken belt actuator, hydraulic control system, multi signal control system and standby Breakage protection system, as it is shown on figure 3, broken belt actuator include frame 13, pull bar 14, rotating shaft 15, upper voussoir 16, One chute 17 and lower wedge block 18, frame 13 has 2 and is arranged symmetrically in the both sides of belt 10, and rotating shaft 15 is arranged on 2 machines Between frame, it is free to rotate.First chute 17 be arranged in frame 13 and and belt 10 between angle be 14 ° of (these Even if time upper voussoir 16 be in free state and also will not go up voussoir 16 sliding along the second chute 30 along the first chute 17 landing simultaneously When falling, the vibration force to frame 13 is less than the 22% of permissible value (being determined by experiment)), upper voussoir 16 includes voussoir body 19 Be arranged on the projection 20 at voussoir body 19 two ends, projection 20 is placed through the first chute 17, voussoir body 19 (see Fig. 7) Lower surface be parallel to each other with belt 10 place plane.Lower wedge block 18 is arranged on the underface of the first chute 17 end and is positioned at skin Under band 10.

In the present embodiment, (1) devises new hydraulic control system, and this hydraulic control system is hydraulic pressure when hydraulic cylinder 21 action Oil pump 26 is idle, it is only necessary to starts hydraulic oil pump 26 when hydraulic cylinder 21 is retracted, it is achieved that short time duty, reaches Energy-conservation effect；(2) have developed a set of standby breakage protection system independent of hydraulic control system, if single dependence hydraulic pressure The thrust of cylinder 21 realizes voussoir 16 and lower wedge block 18 locks belt 10, although substantially can meet the requirement of broken belt protector, But certain parts once in hydraulic system (such as hydraulic cylinder 21 or oil pipe line) fault, belt conveyor generation broken belt fault Time will be unable to be protected, when especially there is non-dominant hydraulic control system fault, operations staff is not easy to discover, and waits until Broken belt has had little time when occurring to process hydraulic system fault, and this will bring the biggest potential hazard to the operation of belt conveyor, and Arranging of standby breakage protection system can effectively solve this problem；First chute be arranged in frame and and belt between angle be 14 °, upper voussoir 16 along during the second chute 30 landing to the vibration force of frame 13 less than the 22% of permissible value.(3) super magnetic is used Causing tensioning system and realize the action of broken belt protector, action is the sensitiveest, can effectively contract and protect short movement time；Also set up simultaneously Breech block 34 prevents the misoperation of super mangneto tensioning system, effectively reduces the malfunction of system.

Application scenarios 3:

Preferably, as in figure 2 it is shown, belt conveyor 300 include being driven by Rolling motor driving cylinder 9, belt 10, carrying roller 11, tensioner and belt break protection device 12, drives cylinder 9 for providing driving force for belt 10, and carrying roller 11 is for skin Band 10 carries and supports, and tensioner uses tensioning dolly (prior art, figure not shown in) tensioning.Long distance delivery One of maximum accident that belt vibration causes is exactly broken belt, it is therefore necessary to arrange broken belt protector.Multiple belt break protection devices 12 are used for Protection when belt 10 occurs broken belt, it includes broken belt actuator, hydraulic control system, multi signal control system and standby Breakage protection system, as it is shown on figure 3, broken belt actuator include frame 13, pull bar 14, rotating shaft 15, upper voussoir 16, One chute 17 and lower wedge block 18, frame 13 has 2 and is arranged symmetrically in the both sides of belt 10, and rotating shaft 15 is arranged on 2 machines Between frame, it is free to rotate.First chute 17 be arranged in frame 13 and and belt 10 between angle be 13 ° of (these Even if time upper voussoir 16 be in free state and also will not go up voussoir 16 sliding along the second chute 30 along the first chute 17 landing simultaneously When falling, the vibration force to frame 13 is less than the 24% of permissible value (being determined by experiment)), upper voussoir 16 includes voussoir body 19 Be arranged on the projection 20 at voussoir body 19 two ends, projection 20 is placed through the first chute 17, voussoir body 19 (see Fig. 7) Lower surface be parallel to each other with belt 10 place plane.Lower wedge block 18 is arranged on the underface of the first chute 17 end and is positioned at skin Under band 10.

In the present embodiment, (1) devises new hydraulic control system, and this hydraulic control system is hydraulic pressure when hydraulic cylinder 21 action Oil pump 26 is idle, it is only necessary to starts hydraulic oil pump 26 when hydraulic cylinder 21 is retracted, it is achieved that short time duty, reaches Energy-conservation effect；(2) have developed a set of standby breakage protection system independent of hydraulic control system, if single dependence hydraulic pressure The thrust of cylinder 21 realizes voussoir 16 and lower wedge block 18 locks belt 10, although substantially can meet the requirement of broken belt protector, But certain parts once in hydraulic system (such as hydraulic cylinder 21 or oil pipe line) fault, belt conveyor generation broken belt fault Time will be unable to be protected, when especially there is non-dominant hydraulic control system fault, operations staff is not easy to discover, and waits until Broken belt has had little time when occurring to process hydraulic system fault, and this will bring the biggest potential hazard to the operation of belt conveyor, and Arranging of standby breakage protection system can effectively solve this problem；First chute be arranged in frame and and belt between angle be 13 °, upper voussoir 16 along during the second chute 30 landing to the vibration force of frame 13 less than the 24% of permissible value.(3) super magnetic is used Causing tensioning system and realize the action of broken belt protector, action is the sensitiveest, can effectively contract and protect short movement time；Also set up simultaneously Breech block 34 prevents the misoperation of super mangneto tensioning system, effectively reduces the malfunction of system.

Application scenarios 4:

Preferably, as in figure 2 it is shown, belt conveyor 300 include being driven by Rolling motor driving cylinder 9, belt 10, carrying roller 11, tensioner and belt break protection device 12, drives cylinder 9 for providing driving force for belt 10, and carrying roller 11 is for skin Band 10 carries and supports, and tensioner uses tensioning dolly (prior art, figure not shown in) tensioning.Long distance delivery One of maximum accident that belt vibration causes is exactly broken belt, it is therefore necessary to arrange broken belt protector.Multiple belt break protection devices 12 are used for Protection when belt 10 occurs broken belt, it includes broken belt actuator, hydraulic control system, multi signal control system and standby Breakage protection system, as it is shown on figure 3, broken belt actuator include frame 13, pull bar 14, rotating shaft 15, upper voussoir 16, One chute 17 and lower wedge block 18, frame 13 has 2 and is arranged symmetrically in the both sides of belt 10, and rotating shaft 15 is arranged on 2 machines Between frame, it is free to rotate.First chute 17 be arranged in frame 13 and and belt 10 between angle be 12 ° of (these Even if time upper voussoir 16 be in free state and also will not go up voussoir 16 sliding along the second chute 30 along the first chute 17 landing simultaneously When falling, the vibration force to frame 13 is less than the 27% of permissible value (being determined by experiment)), upper voussoir 16 includes voussoir body 19 Be arranged on the projection 20 at voussoir body 19 two ends, projection 20 is placed through the first chute 17, voussoir body 19 (see Fig. 7) Lower surface be parallel to each other with belt 10 place plane.Lower wedge block 18 is arranged on the underface of the first chute 17 end and is positioned at skin Under band 10.

In the present embodiment, (1) devises new hydraulic control system, and this hydraulic control system is hydraulic pressure when hydraulic cylinder 21 action Oil pump 26 is idle, it is only necessary to starts hydraulic oil pump 26 when hydraulic cylinder 21 is retracted, it is achieved that short time duty, reaches Energy-conservation effect；(2) have developed a set of standby breakage protection system independent of hydraulic control system, if single dependence hydraulic pressure The thrust of cylinder 21 realizes voussoir 16 and lower wedge block 18 locks belt 10, although substantially can meet the requirement of broken belt protector, But certain parts once in hydraulic system (such as hydraulic cylinder 21 or oil pipe line) fault, belt conveyor generation broken belt fault Time will be unable to be protected, when especially there is non-dominant hydraulic control system fault, operations staff is not easy to discover, and waits until Broken belt has had little time when occurring to process hydraulic system fault, and this will bring the biggest potential hazard to the operation of belt conveyor, and Arranging of standby breakage protection system can effectively solve this problem；First chute be arranged in frame and and belt between angle be 12 °, upper voussoir 16 along during the second chute 30 landing to the vibration force of frame 13 less than the 27% of permissible value.(3) super magnetic is used Causing tensioning system and realize the action of broken belt protector, action is the sensitiveest, can effectively contract and protect short movement time；Also set up simultaneously Breech block 34 prevents the misoperation of super mangneto tensioning system, effectively reduces the malfunction of system.

Application scenarios 5:

Preferably, as in figure 2 it is shown, belt conveyor 300 include being driven by Rolling motor driving cylinder 9, belt 10, carrying roller 11, tensioner and belt break protection device 12, drives cylinder 9 for providing driving force for belt 10, and carrying roller 11 is for skin Band 10 carries and supports, and tensioner uses tensioning dolly (prior art, figure not shown in) tensioning.Long distance delivery One of maximum accident that belt vibration causes is exactly broken belt, it is therefore necessary to arrange broken belt protector.Multiple belt break protection devices 12 are used for Protection when belt 10 occurs broken belt, it includes broken belt actuator, hydraulic control system, multi signal control system and standby Breakage protection system, as it is shown on figure 3, broken belt actuator include frame 13, pull bar 14, rotating shaft 15, upper voussoir 16, One chute 17 and lower wedge block 18, frame 13 has 2 and is arranged symmetrically in the both sides of belt 10, and rotating shaft 15 is arranged on 2 machines Between frame, it is free to rotate.First chute 17 be arranged in frame 13 and and belt 10 between angle be 11 ° of (these Even if time upper voussoir 16 be in free state and also will not go up voussoir 16 sliding along the second chute 30 along the first chute 17 landing simultaneously When falling, the vibration force to frame 13 is less than the 33% of permissible value (being determined by experiment)), upper voussoir 16 includes voussoir body 19 Be arranged on the projection 20 at voussoir body 19 two ends, projection 20 is placed through the first chute 17, voussoir body 19 (see Fig. 7) Lower surface be parallel to each other with belt 10 place plane.Lower wedge block 18 is arranged on the underface of the first chute 17 end and is positioned at skin Under band 10.

In the present embodiment, (1) devises new hydraulic control system, and this hydraulic control system is hydraulic pressure when hydraulic cylinder 21 action Oil pump 26 is idle, it is only necessary to starts hydraulic oil pump 26 when hydraulic cylinder 21 is retracted, it is achieved that short time duty, reaches Energy-conservation effect；(2) have developed a set of standby breakage protection system independent of hydraulic control system, if single dependence hydraulic pressure The thrust of cylinder 21 realizes voussoir 16 and lower wedge block 18 locks belt 10, although substantially can meet the requirement of broken belt protector, But certain parts once in hydraulic system (such as hydraulic cylinder 21 or oil pipe line) fault, belt conveyor generation broken belt fault Time will be unable to be protected, when especially there is non-dominant hydraulic control system fault, operations staff is not easy to discover, and waits until Broken belt has had little time when occurring to process hydraulic system fault, and this will bring the biggest potential hazard to the operation of belt conveyor, and Arranging of standby breakage protection system can effectively solve this problem；First chute be arranged in frame and and belt between angle be 11 °, upper voussoir 16 along during the second chute 30 landing to the vibration force of frame 13 less than the 33% of permissible value.(3) super magnetic is used Causing tensioning system and realize the action of broken belt protector, action is the sensitiveest, can effectively contract and protect short movement time；Also set up simultaneously Breech block 34 prevents the misoperation of super mangneto tensioning system, effectively reduces the malfunction of system.

Last it should be noted that, above example is only in order to illustrate technical scheme, rather than to scope Restriction, although having made to explain to the present invention with reference to preferred embodiment, it will be understood by those within the art that, Technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.

Claims

1. a coal handling system in the station, electric station of high security, is characterized in that, including raw coal bucket, multiple coal terminal, conveying Belt, spray drying nozzle, spray nozzle and feed pump；Described belt conveyor passes multiple coal terminals, is delivered to by coal former Coal bunker；Described spray nozzle is arranged on above the belt conveyor of coal terminal, and it is supplied water by feed pump, and is controlled by water injection valve； Described spray drying nozzle is similarly disposed at above the belt conveyor of coal terminal, and it is passed through dry compressed air, and by spray Mist valve controls；Temperature sensor and the humidity sensor of temperature and humidity for detecting coal it is additionally provided with on described belt conveyor, Water injection valve and spray valve control injection flow rate and spray amount according to the temperature and humidity value of feedback detected, thus control the temperature of coal And humidity.

Coal handling system in the station, electric station of a kind of high security the most according to claim 1, is characterized in that, described coal transfer Acoustic-control illuminating it is additionally provided with in standing.

Coal handling system in the station, electric station of a kind of high security the most according to claim 2, is characterized in that, described coal transfer On-site control it is additionally provided with in standing.