CN2581920Y - Feeding device for heat injecting system of high-temp industrial furnace - Google Patents
Feeding device for heat injecting system of high-temp industrial furnace Download PDFInfo
- Publication number
- CN2581920Y CN2581920Y CN 02259004 CN02259004U CN2581920Y CN 2581920 Y CN2581920 Y CN 2581920Y CN 02259004 CN02259004 CN 02259004 CN 02259004 U CN02259004 U CN 02259004U CN 2581920 Y CN2581920 Y CN 2581920Y
- Authority
- CN
- China
- Prior art keywords
- feed bin
- signal
- utility
- model
- load sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The utility model discloses a feeding system which is suitable for a heat spraying and repairing system of a high-temperature industrial furnace. The utility model comprises a material storing component which comprises a metering bunker, a feeding component which comprises a variable frequency speed controlling motor and a worm distributor, a jet component which comprises a protective gas introducing member and a jet, and a control component which comprises a load-weight sensor and a microcomputer control meter. The utility model uses the load-weight sensor to detect the weight rate of the metering bunker in real time, detecting signals are sent into the microcomputer control meter, the detecting signals after calculation by the microcomputer control meter are converted to frequency control signals which are conveyed to the variable frequency speed controlling motor, the frequency control signals are used for adjusting the rotary speed of the worm distributor, and further, spraying and repairing material quantities entering the jet are controlled. The utility model which can realize accurate and quantitative feeding has the advantages of compact structure, convenient move and high reliability; a material inlet of the jet is especially provided with the protective gas introducing member, and the running safety of the utility model is enhanced.
Description
Technical field
The utility model belongs to the construction and the repairing technique field of kiln lining, relates generally to a kind of feed supplement feedway that is applicable to that hot industry kiln heat injecting system is used in metallurgy, chemical industry, the building materials field.
Technical background
Using multiple hot industry kiln or jar in metallurgy, chemical industry, the building materials field, as blast furnace, steelmaking converter, electric furnace, hot-metal bottle, steel ladle, regenerative furnace, glass melter, cement rotary kiln, dore furnace etc., when the firebrick lining body part in these stoves, the jar (bag) suffers erosion damage, traditional repair mode is first blowing out cooling, builds the method repairing of refractory brick again with embedding.This method not only will waste a large amount of body of heater accumulation of heats, increase and stop kiln (stove) time, and the cost of repairs is higher.Present this method for repairing and mending progressively is eliminated, and the substitute is without the blowing out cooling, directly to the refractory lining damaged location spraying shot shape mending material of red heat, implements to repair fast.Hot gunning is compared with traditional blowing out cold repair, can shorten greatly and repair the stove time, save refractory material, and hot gunning can be repaired the position of repairing at ordinary times can't be obtained, not only alleviated the labour intensity when repairing stove, simultaneously also reduced repairing, maintenance cost significantly, and helped prolonging furnace life, reduced production costs.In recent years, More and more factories begins to adopt this hot gunning technology.
Existing hot gunning technology can roughly be divided into two types of wet spraying and dry method flame gunnings.Wet spraying technology is because of there being water in the gunning material, the evaporation heat absorption of moisture easily makes furnace lining spraying place local cooling cracking, and the gunning refractory water content must obtain strict control, can not be too little or too big.Adopting dry powder flame gunning technology to repair kiln is a kind of comparatively superior spray repair mode.Fettling material under this mode is generally magnesia (granularity＜0.088mm), aluminium powder and corresponding additive, bond, carry mending material with Compressed Gas, in spraying gun head and oxygen mix, perhaps directly carry mending material, make mending material become the semi-molten state to be sprayed on the damaged place of furnace lining with high pressure oxygen.This method is very little to fervid temperature of furnace lining influence, can avoid furnace lining Yin Wendu to reduce and cracking destruction.But this method needs the high concentration oxygen gas medium, so that improve flame temperature greatly, guarantees most of mending material in the fusing fast to the jet length short between the furnace lining of material spray muzzle, therefore to operating reliability, the security requirement height of mending device.
Relate in the enterprise of high temperature kiln at China's majority, medium-sized and small enterprises particularly, extensive use be " general " type mending device.As at Chinese periodical " (industrial furnace) " on the 3rd phase in 1999, disclose a kind of furnace lining mending device in the article that a piece is entitled as " commentary of refractory lining mending device ", only two of the critical pieces of its feeding device, be material-storage jar and injector, both all are fixedly mounted on (see figure 1) on the bracing frame.Material-storage jar is mainly by tank body (label 3), hopper (label 1), safety valve (label 2), taper baiting valve (label 4), opening cylinder (label 5), fluidisation circle (label 6), strength agitator formations such as (labels 7), hopper is connected with tank body by the taper baiting valve, opening cylinder, strength agitator all are contained in the tank body, and fluidisation circle, safety valve lay respectively at the inner and outer wall of tank body.The discharging opening of material-storage jar links to each other with the feeding mouth of flexible pipe with injector (label 8) by dish valve (label 9).The major defect that this feeding device exists has: (1) can't accurately control the spray repair inventory; (2) powder shape metalliferous material directly enters injector by the dish valve and mixes with high pressure oxygen pumped (conveying) medium, exists great potential safety hazard; (3) it is tight to be difficult to fit after the conical lid of taper baiting valve and hopper binding face are out of shape, often cause leaking gas from jar, valve joint place after the inflation in the tank body, and can be pressed into the hopper outlet sometimes because of the valve gap of taper baiting valve, so that be difficult for opening valve gap downwards by wedging; (4) the opening cylinder places in the tank body, is not easy to install and maintenance.
The utility model content
The technical problems to be solved in the utility model is can accurately control spray repair inventory and security of operation automatically for heat injecting system provides a kind of, operate reliable feeding device.
For solving the problems of the technologies described above, the utility model comprises bin stock assembly, supply assembly, ejection assemblies and Control Component, and bin stock assembly, supply assembly, Control Component are installed on the bracing frame.The bin stock assembly comprises metering feed bin, anti-blocking member, motor, and anti-blocking member is positioned at the top position of metering feed bin discharging opening and is fixed in by a sealed bearing on the bulkhead of metering feed bin, and anti-blocking member is by placing the outer motor-driven of metering feed bin; Supply assembly comprises frequency control motor, screw(-type) feeder, and the rotating shaft of frequency control motor and the spiral reamer of screw(-type) feeder are connected; Ejection assemblies comprises protective gas introducing member and injector, it is through hole spare that protective gas is introduced member, the discharging opening of one end and screw(-type) feeder is for being flexible coupling, and the charging aperture of the other end and injector is for to be connected firmly, and its sidewall is provided with the gas passage that leads to the injector link; Control Component comprises load sensor, microcomputerized controller, limit switch, load sensor one end is installed on the described bracing frame, the other end is installed on the described metering feed bin, load sensor detects the instantaneous weight variation of metering feed bin and detection signal is offered described microcomputerized controller in real time, limit switch is installed on the metering feed bin, when the storehouse top cover of metering feed bin contacts with limit switch, limit switch is exported the first switching value signal to microcomputerized controller, this moment, microcomputerized controller received the output signal of load sensor, and compare with the material flow value of setting after this signal being converted to the instantaneous delivery value of material, after predefined algorithm computing, export frequency change control signal to frequency control motor in real time again, when metering feed bin top cover leaves limit switch, limit switch is to microcomputerized controller output second switch amount signal, this moment, microcomputerized controller no longer received the output signal of load sensor, but with load sensor after the detection signal of switch transition moment output carries out translation operation, export the constant control signal of a frequency to frequency control motor.
According to the utility model, microcomputerized controller also can be exported the constant control signal of a frequency to described frequency control motor according to predefined feed streams value behind the second switch amount signal of receiving limit switch output.
Operation principle of the present utility model and running are as follows:
Be not difficult to find out that from technique scheme the utility model contains two kinds of operations mode of operation, i.e. weight-type feed pattern and positive displacement feed patterns.Weight-type feed pattern is meant, load sensor is constantly experienced the loss in weight of spray repair material in the metering feed bin, and detection signal outputed to microcomputerized controller, the actual discharge rate that microcomputerized controller calculates the metering feed bin in view of the above is an instantaneous delivery, and according to the metering instantaneous delivery of feed bin and the predefined feed flow difference after relatively, to frequency control motor output frequency change control signal, so that the rotating speed of real-time adjustable screw batcher, thereby realize the feed supplement amount that accurately control is provided to injector by screw(-type) feeder.The feed process is closed-loop control under this pattern.Positive displacement feed pattern is meant, the surplus volume of feed supplement in the metering feed bin to a certain qualification, need be when measuring chute adds feed supplement, load sensor can't accurately detect the actual flow of feed supplement, at this moment, microcomputerized controller no longer receives the output signal of load sensor, but providing a control signal that frequency is constant to frequency control motor according to instantaneous delivery value or the preset flow rate value of weight-type feed pattern last moment, screw(-type) feeder then provides the spray repair material with constant feed rotating speed to injector.The feed process is open loop control under this pattern.
When the utility model start work, the spray repair material that measures usually in the feed bin is filled it up with, thereby the utility model is at first with weight-type feed mode operation.Along with continuously outflowing of spray repair material, the material level of metering feed bin constantly descends, and weight constantly reduces, when the loading of metering feed bin during less than the setting value of material level lower limit, microcomputerized controller provides reinforced signal, and promptly the reinforced indicator lamp on its control panel is glittering, buzzer pipes, and requires reinforced.Open metering feed bin top cover, limit switch is exported a switching value signal to microcomputerized controller simultaneously, and the code book utility model switches to positive displacement feed mode operation in view of the above.Reinforced finish and when closing metering feed bin top cover, limit switch is exported another switching value signal to microcomputerized controller, the utility model is again with weight-type feed mode operation thus.Feed operational mode sequential chart of the present utility model is shown in Fig. 2, and as can be seen from this figure, in the utility model whole service process, weight-type feed pattern accounts for the overwhelming majority time, and positive displacement feed pattern only adopts when reinforced.No matter be in operation under any feed pattern or when two kinds of feed patterns are switched mutually; spray repair material in the metering feed bin is all the time under the mechanical agitation of anti-blocking member; flow to the feeding mouth of screw(-type) feeder by its discharging opening; and under the drive of screw(-type) feeder spiral reamer; discharging opening by screw(-type) feeder enters protective gas introducing member; under the protective gas effect that the latter introduces; the spray repair material is with the state flow that the disperses charging aperture to injector; and be transported to the injection muzzle by the hyperbaric oxygen gas medium; after the spray repair material penetrates and sprays muzzle, in hot environment oxidation of following moment; burning; arrive the damaged place of furnace lining.
The utlity model has following advantage:
(1) the utility model is by the real-time detection to metering feed bin weight rate, and detection signal is converted to the control signal of adjustable screw batcher rotating speed, and then the spray repair inventory that enters injector is controlled in realization, this design of controlling the dynamic material amount with the static measurement mode, can make the utility model send into material to injector equably, realize preferable spray repair effect according to desired flow.
(2) the mutual switching of weight-type feed pattern of the present utility model and positive displacement feed pattern is control automatically, and when reinforced, screw(-type) feeder is according to a constant rotary speed working, therefore the feed to injector is continuous all the time, and can also guarantee that the feed flow is in definite accuracy.
(3) because the utility model drives the control signal of frequency control motor is according to the difference generation of metering feed bin instantaneous delivery value and the flow value of setting, change the flow value of setting so and will change the feed flow, therefore the utility model also has in good time adjustability, thereby it is more flexible and convenient that it is used.
(4) introduce member because the utility model has also added a protective gas in the place ahead of injector,, can prevent to contain the danger that highly active metal dust is blasted effectively in the oxygen pumped (conveying) medium in the injector feed, introducing protective atmosphere.
(5) compared with prior art, the utility model has removed complicated and insecure member such as cylinder, taper baiting valve, thereby its compact conformation, conveniently moving and reliable operation.
Description of drawings
Fig. 1 is that the prior art feeding device constitutes schematic diagram.
Fig. 2 is the utility model feed operational mode sequential chart.
Fig. 3 is that the utility model preferred embodiment is formed schematic diagram.
Fig. 4 is that the utility model protective gas is introduced element structure figure.
The specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment the utility model is described in further detail.
As shown in Figure 3, preferred embodiment of the present utility model comprises bin stock assembly, supply assembly, Control Component and ejection assemblies, and its preceding 3 assemblies are installed in (not shown) on the bracing frame.The bin stock assembly comprises a square metering feed bin 3, an anti-blocking member 16 and a motor 15; Square metering feed bin 3 is made by corrosion resistant plate, has all welded a hanger 3a at the middle part of its three sides; Top position at metering feed bin 3 discharging openings is equipped with anti-blocking member 16, and it is fixed in the bulkhead place by a sealed bearing (not shown), and anti-blocking member 16 is one and has a plurality of rhabdions that stir section that it is driven by a common electric machine 15.Supply assembly comprises frequency control motor 14 and screw(-type) feeder 18 of an ABB AB, and the spiral reamer of screw(-type) feeder 18 is the bi-filar spiral configuration of varying pitch, and it is driven by frequency control motor 14; The discharging opening of metering feed bin 3 is connected by the inlet of flange (not shown) and screw(-type) feeder 18.Ejection assemblies comprises that protective gas introduces member 17 and injector 8, and it is one to have the cone table of through hole that protective gas is introduced member 17, and its sidewall is provided with nitrogen and introduces the passage (see figure 4) it is processed into by corrosion resistant plate, and injector 8 is formed by stainless steel truck system; Protective gas is introduced the large port of member 17 and the discharging opening employing of screw(-type) feeder 18 is flexible coupling, and its portlet directly is welded on the feeding mouth of injector, and the spray gun of injector 8 and spraying of material carrier pipe 13 are connected.Control Component comprises three load sensors 11, limit switch 12, microcomputerized controller 10, three load sensors 11 are the suspension type pulling force sensor, their end is connected on three hanger 3a that measure on the feed bin by steel wire rope respectively, the other end then is fixed on the upper cross-beam H of support frame, and its output line links to each other with microcomputerized controller 10; Limit switch 12 is installed on the metering feed bin 3, when metering feed bin top cover is closed, it just is pressed on the limit switch 12, microcomputerized controller 10 is a customization instrument, its task of finishing is, read in the analog signals that switching value signal that limit switch 12 sends into and load sensor 11 are sent into, analog signals is converted to digital quantity signal, and the weight signal that will constantly change converts the mass flowrate signal of material to, compare with the material flow value of setting again, then according to following formula operation:
ε＝U
1-U
0 In the formula, U
0The material speed of-setting; U
1-t at a time is by load sensor 11 detected material actual flow rate; The material speed of ε-setting and load sensor 11 detect the deviation of t material actual flow rate constantly; F-microcomputerized controller 10 is to the frequency signal of frequency control motor 14 outputs.Frequency control motor 14 drives the spiral reamer rotation of screw(-type) feeder 18 according to the frequency change control signal F of microcomputerized controller 10.In the utility model preference, the start and stop of motor 15 are also controlled when the start and stop feeding device in the lump by microcomputerized controller 10.
Claims (3)
1. feeding device that is applicable to hot industry kiln heat injecting system, comprise and contain the bin stock assembly that measures feed bin, the ejection assemblies that contains injector [8], the bin stock assembly is installed on the bracing frame, it is characterized in that: it also comprises supply assembly and the Control Component that is installed on the support frame as described above; Described bin stock assembly also comprises anti-blocking member [16] and motor [15], anti-blocking member [16] is positioned at the top position of metering feed bin [3] discharging opening and is fixed in by a sealed bearing on the bulkhead of metering feed bin [3], and anti-blocking member [16] is by placing the outer motor [15] of metering feed bin [3] to drive; Described supply assembly comprises frequency control motor [14], screw(-type) feeder [18], and the spiral reamer of the rotating shaft of frequency control motor [14] and screw(-type) feeder [18] is connected; Described ejection assemblies also comprises protective gas introducing member [17], it is through hole spare that protective gas is introduced member [17], the discharging opening of one end and screw(-type) feeder [18] is for being flexible coupling, the charging aperture of the other end and injector [8] is for to be connected firmly, and its sidewall is provided with the gas passage that leads to injector [8] link; Described Control Component comprises load sensor [11], microcomputerized controller [10], limit switch [12], load sensor [11] one ends are installed on the described bracing frame, the other end is installed on the described metering feed bin [3], load sensor [11] detects the instantaneous weight variation of metering feed bin [3] and detection signal is offered described microcomputerized controller [10] in real time, limit switch [12] is installed on the metering feed bin [3], when storehouse top cover and the limit switch [12] of metering feed bin [3] when contacting, limit switch [12] is to microcomputerized controller [10] the output first switching value signal, microcomputerized controller this moment [10] receives the output signal of load sensor [11], and compare with the material flow value of setting after this signal being converted to the instantaneous delivery value of material, after predefined algorithm computing, export frequency change control signal to frequency control motor [14] in real time again, when the storehouse top cover of metering feed bin [3] leaves limit switch [12], limit switch [12] is to microcomputerized controller [10] output second switch amount signal, microcomputerized controller this moment [10] no longer receives the output signal of load sensor [11], but with load sensor [11] after the detection signal of switch transition moment output carries out translation operation, to the constant control signal of frequency control motor [14] output one frequency.
2. feeding device as claimed in claim 1, it is characterized in that: described microcomputerized controller [10] also can be according to predefined feed streams value to the constant control signal of described frequency control motor [14] output one frequency behind the second switch amount signal of receiving limit switch [12] output.
3. as claim 1,2 described feeding devices, it is characterized in that: described load sensor [11] is 3, and the spiral reamer of screw(-type) feeder [18] is the bi-filar spiral configuration of varying pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02259004 CN2581920Y (en) | 2002-12-02 | 2002-12-02 | Feeding device for heat injecting system of high-temp industrial furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02259004 CN2581920Y (en) | 2002-12-02 | 2002-12-02 | Feeding device for heat injecting system of high-temp industrial furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2581920Y true CN2581920Y (en) | 2003-10-22 |
Family
ID=33726582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02259004 Expired - Lifetime CN2581920Y (en) | 2002-12-02 | 2002-12-02 | Feeding device for heat injecting system of high-temp industrial furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2581920Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788325A (en) * | 2010-02-10 | 2010-07-28 | 吴金良 | Weight detecting device and material bin weight measuring and controlling system with weight detecting device |
| CN102322741A (en) * | 2011-08-08 | 2012-01-18 | 北京联合荣大工程材料有限责任公司 | Remote control converter wet spraying process method and device |
| CN106639936A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Device for injecting solid powder into high-pressure gas pipeline |
| CN108254050A (en) * | 2017-12-26 | 2018-07-06 | 北京京城环保股份有限公司 | A kind of dewatered sludge metering device and method |
| CN114104770A (en) * | 2021-10-09 | 2022-03-01 | 煤科院节能技术有限公司 | Method and system for controlling feeding speed of powder feeder |
| CN114104770B (en) * | 2021-10-09 | 2024-06-04 | 北京天地融创科技股份有限公司 | Method and system for controlling feeding rate of powder feeder |
-
2002
- 2002-12-02 CN CN 02259004 patent/CN2581920Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788325A (en) * | 2010-02-10 | 2010-07-28 | 吴金良 | Weight detecting device and material bin weight measuring and controlling system with weight detecting device |
| CN101788325B (en) * | 2010-02-10 | 2012-02-01 | 吴金良 | Weight detecting device and material bin weight measuring and controlling system with weight detecting device |
| CN102322741A (en) * | 2011-08-08 | 2012-01-18 | 北京联合荣大工程材料有限责任公司 | Remote control converter wet spraying process method and device |
| CN106639936A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Device for injecting solid powder into high-pressure gas pipeline |
| CN108254050A (en) * | 2017-12-26 | 2018-07-06 | 北京京城环保股份有限公司 | A kind of dewatered sludge metering device and method |
| CN114104770A (en) * | 2021-10-09 | 2022-03-01 | 煤科院节能技术有限公司 | Method and system for controlling feeding speed of powder feeder |
| CN114104770B (en) * | 2021-10-09 | 2024-06-04 | 北京天地融创科技股份有限公司 | Method and system for controlling feeding rate of powder feeder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210346866U (en) | Automatic metering device is used in refractory material production | |
| CN2581920Y (en) | Feeding device for heat injecting system of high-temp industrial furnace | |
| CN106524761B (en) | Ferroalloy heating furnace and ferroalloy feeding mechanism | |
| CN201749060U (en) | Compression strength testing device for pellets | |
| CN206566872U (en) | Powder dosing system | |
| CN205873210U (en) | Quick lime dosing unit | |
| CN212236714U (en) | Dosing device based on operation condition of desulfurization tower of coal-fired unit | |
| CN109837359A (en) | A kind of steel scrap continuous charging system | |
| CN216448588U (en) | Automatic unloader of kiln tail | |
| US6379415B1 (en) | Method for feeding granular solids into metal melts | |
| CN208887380U (en) | A kind of kaolin calcined kiln feeding device for glass production | |
| CN111377589B (en) | Automatic gas injection charging process for producing rock wool electric melting furnace | |
| CN208121127U (en) | A kind of equipment for the repairing of mixed iron blast tapping hole | |
| CN208167448U (en) | A kind of intermittent plantmix's cold asphalt rehabilitation equipment | |
| CN202902899U (en) | Microcomputer network control system for double O-shaped limekiln | |
| CN208379380U (en) | A kind of head mixes the asphalt mixing station control system for going out the black material of finished product | |
| CN201125249Y (en) | Blast furnace material-feeding apparatus with even material plate | |
| CN219850242U (en) | Multi-station paint supply equipment | |
| CN110042250A (en) | Cold aluminium slag recycling utilization system and cold aluminium slag regeneration method | |
| CN204325412U (en) | AOD furnace rectification systems | |
| CN211713141U (en) | Tool for repairing furnace throat shape | |
| CN217685112U (en) | Continuous metering and blowing system for lime kiln | |
| CN212862579U (en) | Flexible electric furnace ash anti-bonding stable batching device | |
| CN220722542U (en) | Sand unloading induction interlocking control device for photovoltaic glass production | |
| CN216736600U (en) | Material conveyor capable of metering discharge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121202 Granted publication date: 20031022 |