CN110482166A - Automatic garbage feeding control system - Google Patents
Automatic garbage feeding control system Download PDFInfo
- Publication number
- CN110482166A CN110482166A CN201910753350.8A CN201910753350A CN110482166A CN 110482166 A CN110482166 A CN 110482166A CN 201910753350 A CN201910753350 A CN 201910753350A CN 110482166 A CN110482166 A CN 110482166A
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- China
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- level
- radio frequency
- ultrasonic sensor
- frequency admittance
- high charge
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
Abstract
A kind of automatic garbage feeding control system, including the first radio frequency admittance material level indicator, the first radio frequency admittance material level indicator is equipped with low level switch and high charge level switchs, and low level switch and high charge level switch are mounted on from lower to upper on the roller feed inlet material borehole wall；First radio frequency admittance material level indicator installation site is equipped with flange sleeve, and the first radio frequency admittance level-sensing device is fixed on flange sleeve and movable adjusting；At least one second radio frequency admittance material level indicator is mounted on the roller discharge port material borehole wall, and is stopped the superior and the subordinate in high charge level and be fed and issue the alarm of junior's high charge level；Ultrasonic sensor is divided into the first ultrasonic sensor and the second ultrasonic sensor；The present invention realizes boiler feed systems automatic stabilisation material feeding function, material-level measure can be achieved, fracture alarm, the high lower bound alarm of feed inlet material position, automatic feeding, automatic feed adjusting, abnormality automatic cutting etc., the work load and pressure for mitigating operator, can also make Combustion Operation of Boilers more stable.
Description
Technical field
The present invention relates to a kind of rubbish feed control system, specifically a kind of automatic garbage feeding control system.
Background technique
Circulating fluidized bed boiler charging using screw(-type) feeder by expecting that well enters roller, then by roller rotate by material with
The mode of shedding proceeds to boiler furnace burning.Charging is in sealing, negative pressure state.Existing feed system uses video visual techniques
It is monitored, operator manually carries out charging situation intervention processing according to video pictures.Problems Existing:
1) video pictures are influenced easily fuzzy by live negative pressure, dust and material, influence operator to field condition
Judgement.
2) video pictures can not accurately judge feed size without accurate object of reference, influence charging judgement.
3) feeding manner is excessively high for artificial degree of dependence and needs artificial progress experience anticipation, is unfavorable for producing stable fortune
Capable requirement.
4) former garbage treating process improves, and component of refuse, uniform granularity, water content reduce.Refuse thermal value changes section
Small, Combustion Operation of Boilers is relatively stable.
Summary of the invention
The object of the present invention is to provide a kind of automatic garbage feeding control systems, in view of the above problems, pass through this
Boiler feed systems automatic stabilisation material feeding function is realized in invention, and function includes: material-level measure, and fracture alarm, feed inlet material position are high
Lower bound alarm, automatic feeding, automatic feed adjusting, abnormality automatic cutting etc. mitigate the work load and pressure of operator
Power can also make Combustion Operation of Boilers more stable.With at least one aspect to solve the above problems.
According to an aspect of the present invention, a kind of automatic garbage feed system, including the first radio frequency admittance material level indicator, it is described
First radio frequency admittance material level indicator is equipped with low level switch and high charge level switchs, and low level switch and high charge level switch are from lower to upper
It is mounted on the roller feed inlet material borehole wall；First radio frequency admittance material level indicator installation site be equipped with flange sleeve, flange sleeve with
The inclined 45° angle of the borehole wall, the first radio frequency admittance level-sensing device is fixed on flange sleeve and movable adjusting；Realize that rubbish touches
Switching value point is exported when the first radio frequency admittance level-sensing device, to realize the high lower bound state judgement of feed inlet material position；
At least one second radio frequency admittance material level indicator is mounted on the roller discharge port material borehole wall, detects garbage feeding position
It sets, and stops the superior and the subordinate in high charge level and be fed and issue the alarm of junior's high charge level；
Ultrasonic sensor, installs compressed air blowback sweeping device at ultrasonic sensor additional, and ultrasonic sensor is divided into the
One ultrasonic sensor and the second ultrasonic sensor；
First ultrasonic sensor is mounted on the roller feed inlet material borehole wall, and real-time detection roller feed inlet material well material is high
Simultaneously teletransmission is spent to control system；Second ultrasonic sensor is mounted on the roller feed inlet material borehole wall, at pressure feeding spiral reamer opposite direction,
Real-time detection higher level is fed reamer material delivery situation and teletransmission to control system；Prevent higher level's feed from walking sky, blocking；
First radio frequency admittance material level indicator, the second radio frequency admittance material level indicator, ultrasonic sensor and charging control
System connection.
Preferably, the compressed air blowback sweeping device includes the tracheae for purging puff prot, one end connection purging puff prot,
Tracheae is fixed at ultrasonic sensor by a strut, and purging puff prot is directed at ultrasonic sensor；The tracheae it is another
The compressed air system of end connection circulating fluidized bed boiler.
Preferably, flange sleeve includes metal flange, adjusts lock, adjusts lock and is fixed on metal flange by screw
On the roller feed inlet material borehole wall, the regulator site for adjusting lock is contacted with the first radio frequency admittance material level indicator, and adjustable the
The tilt angle of one radio frequency admittance material level indicator.
Preferably, low level switch detects garbage feeding position, accelerates delivery rate, and delayed startup in the case of low material position
Fracture alarm；High charge level switch detection garbage feeding position, and stop higher level in high charge level and be fed and to the high material of sending
Position alarm.
The beneficial effects of the present invention are: the present invention realizes boiler feed systems automatic stabilisation material feeding function, it can be achieved that material position
Detection, fracture alarm, the high lower bound alarm of feed inlet material position, automatic feeding, automatic feed adjusting, abnormality automatic cutting etc.,
The work load and pressure for mitigating operator, can also make Combustion Operation of Boilers more stable.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of this roller；
Fig. 3 is the structural schematic diagram of flange sleeve；
Fig. 4 is the structural schematic diagram of compressed air blowback sweeping device.
Wherein, 101- high charge level switchs；The low level switch of 102-；103- roller；104- metal flange；105- adjusts lock
Button；The first ultrasonic sensor of 201-；The second ultrasonic sensor of 202-；203- roller feed inlet；204- strut；205- purging
Puff prot；206- tracheae；301/302- the second radio frequency admittance material level indicator.
Specific embodiment
The invention will be further described with embodiment for explanation with reference to the accompanying drawing.
In Fig. 1-4, a kind of automatic garbage feed system, including the first radio frequency admittance material level indicator, at least one second penetrates
Frequency admittance material level indicator, ultrasonic sensor.
First radio frequency admittance material level indicator is equipped with low level switch and high charge level switchs, low level switch and high charge level
Switch be mounted on the roller feed inlet material borehole wall from lower to upper (level switch installation height limit detection specific location by boiler attendance
Personnel provide according to practical material position situation is produced)；First radio frequency admittance material level indicator installation site is equipped with flange sleeve, flange sleeve
Pipe and the inclined 45° angle of the borehole wall, the first radio frequency admittance level-sensing device is fixed on flange sleeve and movable adjust (can be according to specific
Situation is adjusted)；Cable connection connects radio frequency admittance level-sensing device normally opened contact, is arranged by the data to instrument, realizes rubbish contact
Switching value point is exported when to radio frequency admittance level-sensing device, to realize the high lower bound state judgement of feed inlet material position.
Second radio frequency admittance material level indicator is mounted on the roller discharge port material borehole wall that (level switch installation detection is specific
Position is provided by boiler operator according to practical material position situation is produced), garbage feeding position is detected, and in high charge level
Stop the superior and the subordinate being fed and issue the alarm of junior's high charge level.
Install compressed air blowback sweeping device at the ultrasonic sensor additional, ultrasonic sensor is divided into the first ultrasonic wave biography
Sensor and the second ultrasonic sensor；First ultrasonic sensor is mounted on the roller feed inlet material borehole wall that (installation site is by work
Artist person provides according to practical material position situation is produced), simultaneously teletransmission to controlling is real-time detection roller feed inlet material well height of materials
System；Second ultrasonic sensor is mounted on the roller feed inlet material borehole wall, (level switch installation height at pressure feeding spiral reamer opposite direction
Limit detection position is provided by boiler operator according to practical material position situation is produced), it is defeated that real-time detection higher level is fed reamer material
Condition of giving a present and teletransmission are to control system；Prevent higher level's feed from walking sky, blocking.
In some embodiments, since there are materials to fly unrestrained, boiler positive pressure, the installation compressed air at ultrasonic sensor
Device is swept according to setting condition blowback, and the compressed air blowback sweeping device includes purging puff prot, one end connection purging jet
The tracheae of mouth, tracheae are fixed at ultrasonic sensor by a strut, and purging puff prot is directed at ultrasonic sensor；The gas
The compressed air system of the other end connection circulating fluidized bed boiler of pipe.
Equipment list
The course of work:
The superior and the subordinate are fed reamer control, and lower machine cylinder electric current, combustion chamber draft, fire box temperature, boiler is chain greatly, MFT, boiler
Back-end ductwork oxygen content (later period).
In boiler normal operation (fire box temperature), by the fuel of series of preprocessing, the promotion of reamer is fed in higher level
It is lower enter roller feedwell wall, under slide into junior to feed roller.It is uniformly distributed, eventually enters under the throwing, the effect of getting rid of of roller
Hearth combustion.
In bed temperature normal table, roller, which feeds and is delivered to burner hearth, can guarantee that flameholding continues.The
One ultrasonic sensor compares setting value and in proportion signal whether continuously to detect roller feedwell wall material position in setting range
Change higher level and is fed reamer charging rate.Second ultrasonic sensor detects higher level and is fed the whether empty material of reamer fuel, putty, frame
Group.Two sensors install the lower automatic compressed air blowing that imposes a condition additional, and preventing bridging from occurring, measurement is inaccurate and high-temperature flue gas is anti-
String.
In roller feedwell wall, two the first radio frequency admittance material level indicators of setting, level switch detects material position height, high
Material position alarms and stops the charging of higher level's feeding system, low level signals warning reminding sky material.In material position height judgement, contrast echo
Wave sensor, material position highland measurement radio frequency admittance material level indicator signal are more stable and reliable.
Material enters lower machine to feed roller, judges material position situation in bucket by current of electric, changes higher level's delivery rate.Together
At present machine feed drum outlet install the second radio frequency admittance material level indicator, detection outlet whether putty.
For system by combustion chamber draft, boiler is chain greatly, MFT control action.
Effect test verifying
1) fracture warning function: by stopping screw feeder charging, fracture situation is manually caused, fracture warning function is verified
Whether warning output verifies fracture alarms whether have alarm decision in the case of normal charging.
2) the high lower bound warning function of feed inlet material position: by roller feed inlet material accumulation situation, verifying is in material position height
Warning function in the case of limit whether warning output；In the case of normal material position, whether verifying material position alarm has alarm decision.
3) automatic material compensation function: by feed inlet material position lower bound state, automatic material compensation function is verified.(automatic adjustment spiral
The speed of service of batcher carries out feed supplement)
4) automatic feed regulatory function: roller inlet amount is automatically adjusted by combustion temperature in hearth, with control effect curve
Verifying.(PID close-loop automatic adjustment, under automatic control state, fire box temperature is stablized, and temperature trend variation is steady)
5) abnormality automatic cutting function: simulation boiler abnormality stops feed roll and screw(-type) feeder, and move back
Boiler automatic feed state and warning note out.
Device element:
Radio frequency admittance material level indicator
+ 800 DEG C of environment temperature: -40 DEG C ---+70 DEG C of temperature of charge: -220 DEG C ---
Radio frequency admittance material level indicator principle draws single line in circuit unit measuring signal, amplifies through in-phase amplifier,
Its output is connected with coaxial cable shielding layer, is then attached on the shielded layer of probe.The amplifier is an in-phase amplifier,
Its gain is " 1 ", output signal and input signal equipotential, same-phase, same frequency, but is mutually isolated.Ground wire be in cable most
The shielded layer of outside.Since there are above-mentioned relations with intershield for the center line of coaxial cable, so therebetween without current potential
Difference is also just flowed through without electric current, i.e., no electric current is spilt from center line, and being equivalent to therebetween does not have capacitor capacitor in other words
It is zero.Therefore the temperature effect of cable, installation capacitor etc. would not also have an impact.For the bridging problem on probe, use
A kind of new sonde configuration, five layers of concentric structure: innermost layer is center measuring staff, and centre is center shield layer, and ragged edge is ground connection
Installation screw thread, be individually insulated and come with insulating layer.
Capacitor is constituted between electrode and bin wall in insertion feed bin, when level of filler material variation causes capacitance in storehouse
When variation, obtain controlling signal accordingly by conversion circuit.Because capacitance is consecutive variations, which can be with
As continous way level measurement, it is also possible to make level switch, as alarm or the input signal of feeding, delivery device.The material position
In respect of low cost, without mechanical wear, it is easy to installation and maintenance the features such as.
1, versatile: to be suitable for various occasions, can detect particle, flying dust, conduction, non-electrically conductive liquid, sticky material；
2, anti-adhesive circuit: advanced anti-adhesive circuit design can eliminate the adherency of material and generate false error letter
Number；
3, loss protecting mode: low level or high-order fault alarm.Scene is adjustable.
4, mounting and adjusting is easy
5, it is not afraid of sizing, bridging
6, stability is good, is not affected by temperature
7, delay output is adjustable
8, optional heatproof reaches as high as: 550 DEG C
9, high-low-position fail safe function
Ultrasonic sensor
Ultrasonic sensor is the sensor that ultrasonic signal is converted into other energy signals (usually electric signal).It
With frequency is high, wavelength is short, diffraction phenomenon is small, especially good directionality, can become ray and the features such as direction propagation.Ultrasound
Wave is very big to the penetrating power of liquid, solid, especially in the opaque solid of sunlight.Ultrasonic wave encounters impurity or interface
It can generate significantly to reflect to form and be reflected into echo, Doppler effect can be generated by encountering mobiles.Ultrasonic sensor is answered extensively
Used in industry, national defence, biomedicine etc..
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, In
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (4)
1. a kind of automatic garbage feeding control system, it is characterised in that: including the first radio frequency admittance material level indicator, described first is penetrated
Frequency admittance material level indicator is equipped with low level switch and high charge level switchs, and low level switch and high charge level switch are mounted on from lower to upper
On the roller feed inlet material borehole wall；First radio frequency admittance material level indicator installation site is equipped with flange sleeve, and flange sleeve is in the borehole wall
45° angle is tilted, the first radio frequency admittance level-sensing device is fixed on flange sleeve and movable adjusting；Realize that rubbish touches first and penetrates
Switching value point is exported when frequency admittance level-sensing device, to realize the high lower bound state judgement of feed inlet material position；
At least one second radio frequency admittance material level indicator is mounted on the roller discharge port material borehole wall, detects garbage feeding position, and
Stop the superior and the subordinate in high charge level to be fed and issue the alarm of junior's high charge level；
Ultrasonic sensor installs compressed air blowback sweeping device at ultrasonic sensor additional, and ultrasonic sensor, which is divided into, the first to be surpassed
Sonic sensor and the second ultrasonic sensor；
First ultrasonic sensor is mounted on the roller feed inlet material borehole wall, and real-time detection roller feed inlet material well height of materials is simultaneously
Teletransmission is to control system；Second ultrasonic sensor is mounted on the roller feed inlet material borehole wall, at pressure feeding spiral reamer opposite direction, in real time
It detects higher level and is fed reamer material delivery situation and teletransmission to control system；Prevent higher level's feed from walking sky, blocking；
First radio frequency admittance material level indicator, the second radio frequency admittance material level indicator, ultrasonic sensor and feeding control system
Connection.
2. automatic garbage feeding control system according to claim 1, it is characterised in that: dress is swept in the compressed air blowback
The tracheae including purging puff prot, one end connection purging puff prot is set, tracheae is fixed at ultrasonic sensor by a strut,
It purges puff prot and is directed at ultrasonic sensor；The compressed air system of the other end connection circulating fluidized bed boiler of the tracheae.
3. automatic garbage feeding control system according to claim 1, it is characterised in that: flange sleeve includes metal method
Orchid adjusts lock, adjusts lock and metal flange is fixed on the roller feed inlet material borehole wall by screw, the adjusting lock
Regulator site is contacted with the first radio frequency admittance material level indicator, can adjust the tilt angle of the first radio frequency admittance material level indicator.
4. automatic garbage feeding control system according to claim 1, it is characterised in that: low level switch detect rubbish into
Discharge position accelerates delivery rate in the case of low material position, and delayed startup fracture is alarmed；High charge level switch detection garbage feeding position
It sets, and stops higher level's feed in high charge level and alarm high charge level is issued.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753350.8A CN110482166B (en) | 2019-08-15 | 2019-08-15 | Automatic garbage feeding control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753350.8A CN110482166B (en) | 2019-08-15 | 2019-08-15 | Automatic garbage feeding control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110482166A true CN110482166A (en) | 2019-11-22 |
| CN110482166B CN110482166B (en) | 2020-12-29 |
Family
ID=68551335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910753350.8A Active CN110482166B (en) | 2019-08-15 | 2019-08-15 | Automatic garbage feeding control system |
Country Status (1)
| Country | Link |
|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252771A (en) * | 2021-06-03 | 2021-08-13 | 中冶北方（大连）工程技术有限公司 | Online detection device and method for FeO content of sinter with inclined sleeve structure |
| CN114593593A (en) * | 2022-03-21 | 2022-06-07 | 河南郑矿机器有限公司 | Feeding sealing and anti-blocking device and method for rotary equipment |
| CN116379607A (en) * | 2023-06-05 | 2023-07-04 | 达州玖源新材料有限公司 | Heating equipment and drive control system for raw material processing production |
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| CN113252771A (en) * | 2021-06-03 | 2021-08-13 | 中冶北方（大连）工程技术有限公司 | Online detection device and method for FeO content of sinter with inclined sleeve structure |
| CN114593593A (en) * | 2022-03-21 | 2022-06-07 | 河南郑矿机器有限公司 | Feeding sealing and anti-blocking device and method for rotary equipment |
| CN116379607A (en) * | 2023-06-05 | 2023-07-04 | 达州玖源新材料有限公司 | Heating equipment and drive control system for raw material processing production |
| CN116379607B (en) * | 2023-06-05 | 2023-08-18 | 达州玖源新材料有限公司 | Heating equipment and drive control system for raw material processing production |
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| Publication number | Publication date |
|---|---|
| CN110482166B (en) | 2020-12-29 |
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