CN102942071A - High efficient and environment-friendly pebble coal full-sealing discharge device - Google Patents

High efficient and environment-friendly pebble coal full-sealing discharge device Download PDF

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Publication number
CN102942071A
CN102942071A CN2012105131768A CN201210513176A CN102942071A CN 102942071 A CN102942071 A CN 102942071A CN 2012105131768 A CN2012105131768 A CN 2012105131768A CN 201210513176 A CN201210513176 A CN 201210513176A CN 102942071 A CN102942071 A CN 102942071A
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CN
China
Prior art keywords
pebble coal
shell
warehouse
capping
gas
Prior art date
Application number
CN2012105131768A
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Chinese (zh)
Inventor
丁为平
陈太文
陈克祥
高志翔
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江苏中能电力设备有限公司
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Application filed by 江苏中能电力设备有限公司 filed Critical 江苏中能电力设备有限公司
Priority to CN2012105131768A priority Critical patent/CN102942071A/en
Publication of CN102942071A publication Critical patent/CN102942071A/en

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Abstract

The invention relates to equipment in a thermal power plant, and particularly relates to a high efficient and environment-friendly pebble coal full-sealing discharge device applied to a quick grinding pebble coal discharge system in a thermal power plant. The device comprises a transition pipeline, wherein the tail end of the transition pipeline is connected with a gas-tight silo; the gas-tight silo consists of a silo body and a sealing cover which is driven by a cylinder; a transferring box is arranged below the sealing cover; the top of the transferring box is provided with a feed port; a sealing ring is arranged between the edge of the feed port and the bottom surface of the sealing cover; the top of the sealing cover is provided with a lower shell; the lower opening of the silo body is provided with an upper shell; the upper shell and the lower shell are interlaced, sleeved and closed; the top of the sealing cover is also provided with a gas-tight cavity; the lower end of the joint gap between the upper shell and the lower shell is sealed in the gas-tight cavity; and the outer wall of the gas-tight cavity is provided with a sealed air inlet connected with a compressed air source. By adopting the high efficient and environment-friendly pebble coal full-sealing discharge device, dust pollution in a pebble coal working environment can be reduced, the labor intensity is lowered, and water and electricity consumption of auxiliary equipment are saved.

Description

The hermetically sealed tapping equipment of high-efficiency environment friendly pebble coal

Technical field

The present invention relates to a kind of Power Plant Equipment, specifically a kind of hermetically sealed tapping equipment of high-efficiency environment friendly pebble coal that uses for thermal powerplant medium-speed pulverizer removing gangue system.

Background technology

Medium-speed pulverizer in the Power Plant Equipment is extensive not as the steel ball tubular coal mill to coal adaptability, but in its applicable coal scope (grinding bituminous coal and meager coal), it is few to have metal consumption, reduced investment, the coal-grinding power consumption is little, the metal abrasion are hanged down and the advantages such as noise is little, therefore obtain widely applying in the station boiler unit.It is larger that the pebble coal that medium-speed pulverizer when operation produces is mainly derived from the raw coal density, the spoil of difficult mill, iron pyrite etc., pebble coal is fallen below the vane when coal mill moves, send into the stone coal bunker by scraper plate, discharge from the stone coal discharge mouth of stone coal bunker bottom, if stone coal discharge is untimely, bulk deposition in coal mill, cause easily scraper plate, carbon sealing wear or come off, the pebble coal of piling up also can stop up the air channel, pebble coal catches fire under the effect of hot blast when serious, the scaling loss air channel, the coal mill parts such as scraper plate and stone coal bin stop up Residue extraction pipeline, cause the coal mill fault to stop transport, even meeting directly affect the running state of generator set, so the stone coal discharge problem of medium-speed pulverizer has become boiler of power plant specialty daily attention major tasks content, accounts for more than 45% of everyday devices maintenance.

The deslagging mode of existing medium-speed pulverizer all is to adopt the box dreg removing system of buffering basically, on the spot discharging, manually clear, ash gate leaks and the phenomenon that leaks outside in just existing after operation a period of time, because factor and the effect on coal quality pebble coal bed drain purge of coal mill design itself increase, make pebble coal deslagging entrance door, exit door is frequently opened, the ash gate serious wear, door plate deformation, forming jam closes not in place, cause seriously and leak out, barotropic gas during deslagging in the slag case carries a large amount of dust, and the gross pollution surrounding environment becomes numerous thermal power generation corporations and all puts forth effort on the problem that will solve, common stone coal discharge has manual emission, hydraulic discharge, three kinds of patterns of machinery transportation, because pebble coal has density large (1.0 ~ 1.5 t/m3), particle large (≤60mm), hardness is high, temperature high (about 150 ℃), contain the characteristics such as dust so that pebble coal has certain difficulty processing and carry, more than several processing methods all be difficult to the effect that reaches desirable.

Summary of the invention

Technical matters to be solved by this invention is, a kind of dust pollution that can reduce the pebble coal working environment is provided, and reduces labor intensity, and saves the water of accessory equipment, the hermetically sealed tapping equipment of high-efficiency environment friendly pebble coal of electric energy consumption.

The hermetically sealed tapping equipment of high-efficiency environment friendly pebble coal of the present invention includes the transition conduit that is connected with the outlet of coal mill pebble coal, gas-tight silo of the terminal connection of transition conduit, gas-tight silo is comprised of a fixing warehouse and the liftable annular capping that is positioned at the warehouse below, and capping is by the air cylinder driven that is installed on the warehouse; Capping below is provided with the transport box that can remove, the transport box top be provided with can with the involutory inlet point of closure base portion, be provided with seal ring between feed hole edges and the capping bottom surface; The capping top is provided with several lower shells coaxial but that diameter is different, is provided with several upper shells coaxial but that diameter is different at the warehouse end opening simultaneously, the interlaced socket sealing of upper shell and lower shell; Also be provided with a sealing gland chamber on the end face of capping, the lower end in the socket gap of described upper shell and lower shell is closed in the sealing gland chamber, is provided with the sealing air import that is connected with compressed air source on the outer wall in sealing gland chamber.

Described transport box is positioned on the seat of weighing when being positioned at the capping below, and the seat bottom of weighing arranges LOAD CELLS, is provided with level-sensing device at the warehouse top simultaneously.

Described warehouse top is provided with air extractor duct, and air extractor duct is connected with bag dust collector with centrifugal blower through vent pipe.

Be provided with spray equipment in the described warehouse, be used for lowering the temperature and depositing dust.

Be provided with one maintenance insertion plate door on the described transition conduit with discharging insertion plate door.

Be furnished with the observation window with rotary cleaning balde on described gas-tight silo and the transport box.

The present invention, changed the uncovered collection pebble coal of original system phenomenon, gas sealing mechanism by the gas-tight silo bottom, the slag inlet flange of gas-tight silo and pebble coal transport box can be closely cooperated, use simultaneously the compressed air sealing junction, whole tapping process can carry out under the condition of complete closed, has avoided the dust raising phenomenon in the tapping process fully; In order to guarantee that the phenomenon of dusting does not appear in system sealing when disconnecting, the negative-pressure air-flow that centrifugal blower on the bag dust collector that system carries produces can and siphon away malleation dust air-flow in the confined space with the earth pressure release in the confined space of pebble coal transport box, has guaranteed in the transport process also without dust raising phenomenon.Because the pebble coal temperature is higher, might produce nature, is provided with spray equipment and temperature measuring equipment in gas-tight silo, handling process all needs to the pebble coal spray cooling each time, reduces airborne dust; In the time of also can reaching a high temperature setting value in the temperature of pebble coal, give the pebble coal spray cooling, until the pebble coal temperature drops to the safety temperature setting value, stop water spray.System is provided with weighting apparatus below the pebble coal transport box, the gas-tight silo top arranges level-sensing device simultaneously, both support the use, can accurately show the pebble coal amount in the pebble coal transport box, also possessed simultaneously warning function, and information fed back to system control cabinet, in time pebble coal is toppled over processing, avoid the interior pebble coal trunkful of transport box to flood the appearance of accident, both can accomplish far and near to report to the police apart from material level, also can accumulate coal mill stone coal discharge amount hourly, thereby be conducive to effectively judge coal mill dynamic and static ring running state; In addition arrange observation window with rotary cleaning balde at gas-tight silo and pebble coal transport box, the personnel of patrolling and examining can be at any time by the mode of operation of observation window from outer inspection transport box and gas-tight silo inside; Its whole system degree of automation is high, greatly reduces staff's work capacity, and system can reduce the dust pollution more than 96% with respect to the open manual emission of holding tank transition system, reduces by 85% labor export.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is the local structure for amplifying scheme drawing of the A of Fig. 1.

The specific embodiment

As shown in the figure, the hermetically sealed tapping equipment of this high-efficiency environment friendly pebble coal includes the transition conduit 01 that is connected with the outlet of coal mill pebble coal, gas-tight silo 02 of the terminal connection of transition conduit, gas-tight silo is comprised of a fixing warehouse 021 and the liftable annular capping 022 that is positioned at the warehouse below, and capping 022 is driven by the cylinder 03 that is installed on the warehouse 021; Capping 022 below is provided with the transport box that can remove 04, the transport box top be provided with can with the involutory inlet point 041 of closure base portion, be provided with seal ring 05 between inlet point 041 edge and capping 022 bottom surface; Capping 022 top is provided with several lower shells 023 coaxial but that diameter is different, is provided with several upper shells 024 coaxial but that diameter is different at warehouse 021 end opening simultaneously, upper shell 024 and lower shell 023 interlaced socket sealing; Also be provided with a sealing gland chamber 025 on the end face of capping 022, upper shell 024 is closed in the sealing gland chamber 025 with the lower end in the socket gap of lower shell 023, is provided with the sealing air import 026 that is connected with compressed air source on the outer wall in sealing gland chamber.

Transport box 04 is positioned in when being positioned at the capping below on the seat 06 of weighing, and the seat bottom of weighing arranges LOAD CELLS 061, is provided with level-sensing device (not providing among the figure) at warehouse 021 top simultaneously.

Warehouse 021 top is provided with air extractor duct 027, and air extractor duct is connected with bag dust collector 08 with centrifugal blower through vent pipe.

Be provided with spray equipment in the warehouse, be used for lowering the temperature and depositing dust.

Be provided with one maintenance insertion plate door 09 on the transition conduit 01 with discharging insertion plate door 10.

Be furnished with the observation window with rotary cleaning balde on gas-tight silo and the transport box.

Claims (6)

1. hermetically sealed tapping equipment of high-efficiency environment friendly pebble coal, include the transition conduit (01) that is connected with the outlet of coal mill pebble coal, the terminal gas-tight silo (02) that connects of transition conduit, gas-tight silo is comprised of a fixing warehouse (021) and the liftable annular capping (022) that is positioned at warehouse below, and capping (022) is by cylinder (03) driving that is installed on the warehouse (021); Capping (022) below is provided with the transport box that can remove (04), the transport box top be provided with can with the involutory inlet point (041) of closure base portion, be provided with seal ring (05) between inlet point (041) edge and capping (022) bottom surface; It is characterized in that: capping (022) top is provided with several lower shells (023) coaxial but that diameter is different, simultaneously be provided with several upper shells (024) coaxial but that diameter is different at warehouse (021) end opening, upper shell (024) and the interlaced socket sealing of lower shell (023); Also be provided with a sealing gland chamber (025) on the end face of capping (022), upper shell (024) is closed in the sealing gland chamber (025) with the lower end in the socket gap of lower shell (023), is provided with the sealing air import (026) that is connected with compressed air source on the outer wall in sealing gland chamber.
2. the hermetically sealed tapping equipment of high-efficiency environment friendly pebble coal according to claim 1, it is characterized in that: transport box (04) is positioned in when being positioned at the capping below on the seat (06) of weighing, weigh seat bottom arranges LOAD CELLS (061), is provided with level-sensing device at warehouse (021) top simultaneously.
3. the hermetically sealed tapping equipment of high-efficiency environment friendly pebble coal according to claim 1, it is characterized in that: warehouse (021) top is provided with air extractor duct (027), and air extractor duct is connected with bag dust collector (08) with centrifugal blower through vent pipe.
4. the hermetically sealed tapping equipment of high-efficiency environment friendly pebble coal according to claim 1, it is characterized in that: warehouse is provided with spray equipment in (021).
5. the hermetically sealed tapping equipment of high-efficiency environment friendly pebble coal according to claim 1 is characterized in that: be provided with one maintenance insertion plate door (09) on the transition conduit (01) and discharge together insertion plate door (10).
6. the hermetically sealed tapping equipment of high-efficiency environment friendly pebble coal according to claim 1 is characterized in that: be furnished with the observation window with rotary cleaning balde on gas-tight silo (02) and the transport box (04).
CN2012105131768A 2012-12-05 2012-12-05 High efficient and environment-friendly pebble coal full-sealing discharge device CN102942071A (en)

Priority Applications (1)

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CN2012105131768A CN102942071A (en) 2012-12-05 2012-12-05 High efficient and environment-friendly pebble coal full-sealing discharge device

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Application Number Priority Date Filing Date Title
CN2012105131768A CN102942071A (en) 2012-12-05 2012-12-05 High efficient and environment-friendly pebble coal full-sealing discharge device

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CN102942071A true CN102942071A (en) 2013-02-27

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103803315A (en) * 2014-02-28 2014-05-21 中国电力工程顾问集团西南电力设计院 Movable pebble coal device
CN104043517A (en) * 2014-06-18 2014-09-17 阚梦诗 Discharging device of pebble coal seal pot of coal mill
CN104338602A (en) * 2014-11-03 2015-02-11 尹国庆 Pebble coal discharging hole unblocking device for medium speed coal mill
CN104724508A (en) * 2013-12-24 2015-06-24 柳州市京阳节能科技研发有限公司 Dual-scrape energy-saving environment-friendly handling set

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2885414Y (en) * 2006-04-26 2007-04-04 陈增春 Air curtain type annular seal for tubular type tube mill
CN200974714Y (en) * 2006-11-28 2007-11-14 邓孝成 Stone coal pneumatic suction system
CN201500554U (en) * 2009-09-22 2010-06-09 济南研鼎科技发展有限公司 Sealing bin of isobaric discharge sealing and collecting device for stone coal
CN201529548U (en) * 2009-09-22 2010-07-21 济南研鼎科技发展有限公司 Stone coal equal pressure discharging, sealing, and collecting device
CN201889225U (en) * 2010-11-22 2011-07-06 扬州春明机械有限公司 Environment-friendly discharge and hermetical collection device for stone coal
CN202201518U (en) * 2011-07-19 2012-04-25 江苏威宇电力设备有限公司 Pebble coal sealing and discharging device
CN202935969U (en) * 2012-12-05 2013-05-15 江苏中能电力设备有限公司 High efficient and environment friendly pebble coal omniseal discharge device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2885414Y (en) * 2006-04-26 2007-04-04 陈增春 Air curtain type annular seal for tubular type tube mill
CN200974714Y (en) * 2006-11-28 2007-11-14 邓孝成 Stone coal pneumatic suction system
CN201500554U (en) * 2009-09-22 2010-06-09 济南研鼎科技发展有限公司 Sealing bin of isobaric discharge sealing and collecting device for stone coal
CN201529548U (en) * 2009-09-22 2010-07-21 济南研鼎科技发展有限公司 Stone coal equal pressure discharging, sealing, and collecting device
CN201889225U (en) * 2010-11-22 2011-07-06 扬州春明机械有限公司 Environment-friendly discharge and hermetical collection device for stone coal
CN202201518U (en) * 2011-07-19 2012-04-25 江苏威宇电力设备有限公司 Pebble coal sealing and discharging device
CN202935969U (en) * 2012-12-05 2013-05-15 江苏中能电力设备有限公司 High efficient and environment friendly pebble coal omniseal discharge device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104724508A (en) * 2013-12-24 2015-06-24 柳州市京阳节能科技研发有限公司 Dual-scrape energy-saving environment-friendly handling set
CN103803315A (en) * 2014-02-28 2014-05-21 中国电力工程顾问集团西南电力设计院 Movable pebble coal device
CN104043517A (en) * 2014-06-18 2014-09-17 阚梦诗 Discharging device of pebble coal seal pot of coal mill
CN104338602A (en) * 2014-11-03 2015-02-11 尹国庆 Pebble coal discharging hole unblocking device for medium speed coal mill

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Application publication date: 20130227

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