CN209618220U - A kind of defeated slag bucket elevator chain rupture monitoring device of coal-burning boiler - Google Patents
A kind of defeated slag bucket elevator chain rupture monitoring device of coal-burning boiler Download PDFInfo
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- CN209618220U CN209618220U CN201920025034.4U CN201920025034U CN209618220U CN 209618220 U CN209618220 U CN 209618220U CN 201920025034 U CN201920025034 U CN 201920025034U CN 209618220 U CN209618220 U CN 209618220U
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- bucket elevator
- driven gear
- angle bar
- chain
- support base
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Abstract
The utility model relates to a kind of defeated slag bucket elevator chain rupture monitoring devices of coal-burning boiler, including bucket elevator driven gear beaming roller, chain driven gear, angle bar, contact push rod, support base, mechanical trip switch, rigid strut, DCS or PLC control system；Chain driven gear is mounted on bucket elevator driven gear beaming roller, and angle bar is fixed on bucket elevator driven gear beaming roller, and angle bar is adjacently positioned with chain driven gear；Support base is fixed on the axle sleeve of bucket elevator driven gear beaming roller, and support base is located at the side of angle bar, mechanical trip switch is fixed by rigid strut with support base, contact push rod is located on mechanical trip switch, angle bar is adjacent with rigid strut and does not contact, and mechanical trip switch is connect with DCS or PLC control system.The utility model, which is realized, monitors the chain operating condition of bucket elevator in real time, valuable opportunity is provided for accident maintenance, it is ensured that generating set safe and stable operation.
Description
Technical field
The utility model belongs to coal fired power plant equipment condition monitoring technical field, the in particular to chain rupture of boiler slag conveying bucket elevator
Monitoring technology, specifically a kind of structure is simple, low cost, monitoring device easy to maintain.
Background technique
Most of large and medium-sized coal-fired power plant gone into operation after 2000 uses wet type deslagging scheme, the master that the program includes
Want system equipment are as follows: hydraulic slag discharging slot, submerged slag conveyor, slag crusher, bucket elevator, slag storehouse, dump truck.Burner hearth deslagging connects
It is continuous to enter submerged slag conveyor upper groove body, be cooled by water and quenching after pulled out by submerged slag conveyor into slag crusher, broken by slag crusher
Broken clinker is transported to slag the top of the warehouse via bucket elevator and carries out bleed, and the clinker after bleed is handled by dump truck outward transport.
To guarantee that clinker transportation system safe and reliable operation, the whole system use programmable controller (PLC) or decentralised control system
System (DCS) procedure auto-control, bucket elevator stoppage in transit automatic trip slag crusher, slag crusher stoppage in transit automatic trip dragveyer.Thus may be used
See, bucket elevator is extremely important equipment in the defeated slag system of coal-burning boiler, and performance quality directly affects the safety of generating set
Stable operation.If bucket elevator chain rupture discovery not in time and is repaired, gently cause generating set substantially load down, it is heavy then cause unit
It is non-to stop expansion accident.Therefore, accurate measurements bucket elevator chain rupture operating condition has far reaching significance.
Currently, being all not equipped with hopper chain breakage warning device on domestic bucket elevator, the fracture of hopper chain is complete
The visual observations discovery of site operation personnel or tour personnel are relied on, the artificial error of observation and work mistake are inevitable, thus
Disastrous effect after bucket elevator chain breakage is with regard to inevitable.
Numerous scholars were almost anti-material strip entirely to the project that bucket elevator is studied or expected chain centring device in recent years, so far only
There are a Chinese patent " bucket elevator protective device in the defeated slag system of circulating fluidized bed boiler ", number of patent application
201320645478.0, it provides a kind of bucket elevator belt and fractures protective device, the device is in case type driven wheel bearing block pressure
It covers equipped with close to inductive switching device, it is described to be connect close to inductive switching device with the time relay being arranged in control cabinet,
And the motor connection on the circuit and bucket elevator in control cabinet with the time relay.The device is rolled in the driving belt of bucket elevator
Having no progeny can achieve the purpose that protect equipment timely and effectively by Information Conduction to upstream equipment.
Above-mentioned patent detects whether bucket elevator belt fractures using inductive proximity switch.It is close to the sensor switched
Contactless, cost investment is big, and material is fragile, and the requirement of installation and operation condition is harsh, because of bucket elevator belt in actual use
Tight device causes the offset of the slight amplitude of driven wheel and often to wipe clashing and breaking with detected disc face bad.In addition, close to switch
The input of pulse signal, the measurement of pulsed quantity, pulsed logic operation and judgement, the electric connection of the time relay, lead to system
Protective loop is complicated, and fault point is more, and reliability is low, and installation and maintenance cost are high, needs to frequently replace close to inductive switching device, real
Using effect is poor in the production of border.
Utility model content
The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and provide a kind of structure design conjunction
Reason, accurate and reliable, low cost, bucket elevator chain breakage monitoring device easy to maintain, simplify monitoring device configuration, increase defeated
The reliability of slag system provides guarantee for the safe and stable operation of generating set.
The technical scheme in the invention for solving the above technical problem is: a kind of defeated slag bucket elevator chain rupture prison of coal-burning boiler
Survey device, which is characterized in that including bucket elevator driven gear beaming roller, chain driven gear, angle bar, contact push rod, support base,
Mechanical trip switch, rigid strut, DCS or PLC control system；The chain driven gear is mounted on bucket elevator driven gear shaft
On roller, the angle bar is fixed on bucket elevator driven gear beaming roller, and angle bar is adjacently positioned with chain driven gear；The support
Pedestal is fixed on the axle sleeve of bucket elevator driven gear beaming roller, and support base is located at the side of angle bar, and the mechanical trip is opened
It closes and is fixed by rigid strut with support base, the contact push rod is located on mechanical trip switch, and the angle bar and rigidity are propped up
Bar is adjacent and does not contact, and the mechanical trip switch is connect with DCS or PLC control system.
Furthermore, the angle bar is provided with two, and two angle bar balanced welding on bucket elevator driven gear beaming roller
Connect fixation.Angle between angle bar and bucket elevator driven gear beaming roller is right angle, two angle bar will be run with bucket elevator and with
Chain driven gear rotates synchronously, to periodically touch the contact push rod for stirring mechanical trip switch.
Furthermore, the rigid strut is fixed with support base vertical welding, the mechanical trip switch and rigidity
Strut is vertically fixed, and the angle bar is arranged vertically with contact push rod.
Furthermore, sound-light alarm and the protection of bucket elevator chain breakage are provided in the DCS or PLC control system
Trip Logic circuit interface.
Furthermore, mechanical trip switch contact on-off model access defeated slag system DCS or PLC control system into
Row chain rupture delay integrated logic calculation process and configuration bucket elevator chain breakage sound-light alarm and trip protection logic.
Mechanical trip switch contact on-off model is directly accessed DCS or PLC control system, through the logic synthesis operation that is delayed
After processing, logic interfacing is introduced, to prompt operations staff to find bucket elevator chain work condition abnormality and automatic protection tripping in time
Bucket elevator avoids generating set accident from expanding.
When bucket elevator chain rupture monitoring device is rotated according to chain, two angle bar meetings of chain driven gear coaxial synchronous rotation
Mechanical trip switch is periodically caused to generate by 0 to 1 rising edge pulse signal, to judge that chain is unbroken.When bucket mentions
Machine chain breakage perhaps bucket elevator stop transport when mechanical trip switch can generate 0 or 1 lasting ordinary mail number, through DCS or PLC
Control system be delayed after logic synthesis calculation process to issue chain rupture sound-light alarm and bucket elevator trip protection signal.
The utility model compared with prior art, has the following advantages that and effect:
(1) mechanical equipment structure is simple, not fetch ring border, insensitive to vibration and dust, easy to maintain；
(2) the mechanical trip switch removed from used equipment can be used in the mechanical trip switch in monitoring device, and past heritage are again
It utilizes, device does not use the time relay, and cost is small or even zero cost.Using the existing PLC or DCS control system of power plant,
Control loop information processing rate is fast, high reliablity；
(3) the application utility model device does not contact rotation directly with bucket elevator chain, will not wear and damage bucket elevator
System equipment；
(4) after bucket elevator chain rupture monitoring signals enter PLC or DCS control system, timely and intuitively power plant can be prompted to run
There is chain breakage unusual service condition, and automatic trip bucket elevator and defeated slag system equipment in personnel's bucket elevator, disconnected for more rapidly processing
Chain failure wins valuable opportunity, avoids fault spread.
Detailed description of the invention
Fig. 1 is the circuit theory signal of the defeated slag bucket elevator chain rupture monitoring device of coal-burning boiler in the utility model embodiment
Figure.
Fig. 2 is the overall structure signal of the defeated slag bucket elevator chain rupture monitoring device of coal-burning boiler in the utility model embodiment
Figure.
In figure: 1- bucket elevator driven gear beaming roller；2- chain driven gear；3- angle bar；The contact 4- push rod；5- supports bottom
Seat；6- mechanical trip switch；7- rigidity strut；8-DCS or PLC control system.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Embodiment.
Referring to Fig. 1 to Fig. 2, the defeated slag bucket elevator chain rupture monitoring device of coal-burning boiler in the present embodiment, including bucket elevator from
Moving gear beaming roller 1, chain driven gear 2, angle bar 3, contact push rod 4, support base 5, mechanical trip switch 6, rigid strut 7,
DCS or PLC control system 8；Chain driven gear 2 is mounted on bucket elevator driven gear beaming roller 1, and angle bar 3 is fixed on bucket elevator
On driven gear beaming roller 1, and angle bar 3 is adjacently positioned with chain driven gear 2；Support base 5 is fixed on bucket elevator driven gear
On the axle sleeve of beaming roller 1, and support base 5 is located at the side of angle bar 3, and mechanical trip switch 6 passes through rigid strut 7 and support base
5 is fixed, and contact push rod 4 is located on mechanical trip switch 6, and angle bar 3 is adjacent with rigid strut 7 and does not contact, mechanical trip switch 6
It is connect with DCS or PLC control system 8.
In the present embodiment, angle bar 3 is provided with two, and two angle bar 3 are symmetrically welded on bucket elevator driven gear beaming roller 1
It is fixed.Angle between angle bar 3 and bucket elevator driven gear beaming roller 1 is right angle, two angle bar 3 will be run with bucket elevator and with
Chain driven gear 2 rotates synchronously, to periodically touch the contact push rod 4 for stirring mechanical trip switch 6.
In the present embodiment, rigid strut 7 is fixed with 5 vertical welding of support base, mechanical trip switch 6 and rigid strut 7
Vertical fixed, angle bar 3 is arranged vertically with contact push rod 4.When work, angle bar 3 with bucket elevator run and with chain driven gear 2
It rotates synchronously, to periodically touch the contact push rod 4 for stirring mechanical trip switch 6, the movement of contact push rod 4 causes mechanical row
6 contact Cheng Kaiguan is opened or closed.
In the present embodiment, the sound-light alarm and protection that bucket elevator chain breakage is increased in DCS or PLC control system 8 are jumped
Lock logical circuit interface, to prompt operations staff to find chain breakage exception in time.6 contact switch amount of mechanical trip switch letter
Number it is directly accessed DCS or PLC control system 8, after the logic synthesis calculation process that is delayed, introduces DCS or PLC sound-light alarm and guarantor
Trip Logic interface is protected, so that operations staff can monitor bucket elevator chain operating condition in real time.
When bucket elevator works normally, two angle bar 3 of 2 coaxial synchronous of chain driven gear rotation can periodically cause machine
Tool travel switch 6 is generated by 0 to 1 rising edge pulse signal, to judge that chain is unbroken.When bucket elevator chain breakage or
When bucket elevator is stopped transport, mechanical trip switch 6 can generate 0 or 1 lasting ordinary mail number.
Chain breakage monitoring signals access DCS or PLC after DCS or PLC control system 8 are delayed logic synthesis calculation process
Sound-light alarm and trip protection circuit monitor the chain operating condition of bucket elevator in real time to realize, when chain rupture failure can be sent out in time
DCS or PLC sound-light alarm and touch trip protection circuit out and stop transport automatically defeated slag system, when providing valuable for accident maintenance
Machine, it is ensured that generating set safe and stable operation.
By above-mentioned elaboration, those skilled in the art can implement.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different, and above content is only to the utility model structure example explanation described in this specification.
All equivalence changes or simple change done according to structure, feature and principle described in the concept of the patent of the utility model, are wrapped
It includes in the protection scope of the utility model patent.Those skilled in the art of the present invention can be to described
Specific embodiment does various modifications or additions or is substituted in a similar manner, without departing from the knot of the utility model
Structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (4)
1. a kind of defeated slag bucket elevator chain rupture monitoring device of coal-burning boiler, which is characterized in that including bucket elevator driven gear beaming roller
(1), chain driven gear (2), angle bar (3), contact push rod (4), support base (5), mechanical trip switch (6), rigid strut
(7), DCS or PLC control system (8)；The chain driven gear (2) is mounted on bucket elevator driven gear beaming roller (1), described
Angle bar (3) is fixed on bucket elevator driven gear beaming roller (1), and angle bar (3) is adjacently positioned with chain driven gear (2)；It is described
Support base (5) is fixed on the axle sleeve of bucket elevator driven gear beaming roller (1), and support base (5) is located at the one of angle bar (3)
Side, the mechanical trip switch (6) passes through rigid strut (7) and support base (5) are fixed, and the contact push rod (4) is located at machine
On tool travel switch (6), the angle bar (3) is adjacent with rigid strut (7) and does not contact, the mechanical trip switch (6) and DCS
Or PLC control system (8) connection.
2. the defeated slag bucket elevator chain rupture monitoring device of coal-burning boiler according to claim 1, which is characterized in that the angle bar
(3) two are provided with, and two angle bar (3) are symmetrically welded fixation on bucket elevator driven gear beaming roller (1).
3. the defeated slag bucket elevator chain rupture monitoring device of coal-burning boiler according to claim 1, which is characterized in that the rigidity branch
Bar (7) is vertical with support base (5) fixed, and the mechanical trip switch (6) is vertical with rigid strut (7) fixed, the angle bar
(3) it is arranged vertically with contact push rod (4).
4. the defeated slag bucket elevator chain rupture monitoring device of coal-burning boiler according to claim 1, which is characterized in that the DCS or
The sound-light alarm and trip protection logical circuit interface of bucket elevator chain breakage are provided in PLC control system (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920025034.4U CN209618220U (en) | 2019-01-08 | 2019-01-08 | A kind of defeated slag bucket elevator chain rupture monitoring device of coal-burning boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920025034.4U CN209618220U (en) | 2019-01-08 | 2019-01-08 | A kind of defeated slag bucket elevator chain rupture monitoring device of coal-burning boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115180344A (en) * | 2022-05-06 | 2022-10-14 | 国能神皖合肥发电有限责任公司 | Chain breakage protection system |
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2019
- 2019-01-08 CN CN201920025034.4U patent/CN209618220U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115180344A (en) * | 2022-05-06 | 2022-10-14 | 国能神皖合肥发电有限责任公司 | Chain breakage protection system |
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