CN207827033U - The pulverized coal bin of formula moisture absorption pipe is arranged with subangle - Google Patents

Abstract

The utility model belongs to coal dust storing technology field, more particularly to a kind of pulverized coal bin for arranging formula moisture absorption pipe with subangle, the pulverized coal bin includes pulverized coal bin ontology, four moisture absorption pipes and two powder sinking tubes are provided at the top of pulverized coal bin ontology, pulverized coal bin body interior is stretched into moisture absorption pipe one end, and the other end of moisture absorption pipe is connected by damp suction door with mill exhauster inlet tube；Two powder sinking tubes are symmetricly set at the top center of pulverized coal bin ontology, and four moisture absorption pipes are symmetricly set on four, the top vertex of pulverized coal bin ontology.The utility model solves moisture absorption pipe existing for existing pulverized coal bin and is laid out technical problem unreasonable, that performance of control is poor.The utility model can eliminate suction dead angle by the way that moisture absorption pipe is arranged in peripheral position.And powder sinking tube is arranged in center other than it can improve powder falling effect, prevent the adherent deposition of coal dust, its horizontal distance between moisture absorption pipe can also be increased, generation therebetween is avoided to influence each other.

Description

The pulverized coal bin of formula moisture absorption pipe is arranged with subangle

Technical field

The utility model belongs to coal dust storing technology field, and in particular to a kind of coal dust with subangle arrangement formula moisture absorption pipe Storehouse.

Background technology

The characteristics of China's energy resources is rich coal, oil starvation, few gas, and coal all will be within suitable long-term at present and in the future China's energy resource structure is dominated.Pulverized-coal fired boiler is that the main of China uses one of coal equipment, and pulverized coal bin will be by wilderness demand.

Coal dust is very thin, and relative surface area is very big, can adsorb large quantity of air, is all carrying out oxidation at any time.Oxidation heat liberation makes Coal dust temperature increases, and oxidation is reinforced.If radiating condition is bad, after coal dust temperature increases to a certain degree, it is possible to which spontaneous combustion is exploded. The explosivity of coal dust is related with many factors, main to have：(1) volatile matter content；Volatile matter is high, generates the possibility of explosion Greatly.(2) fineness of pulverized coal；Coal dust is thinner, and explosion hazard is bigger.(3) primary mixture concentration；Dangerous concentrations 1.2-2.0 it Between.In operation, it conveys from convenient for coal dust and lights consideration, the generally also more difficult concentration range for avoiding setting off an explosion.(4) coal dust Deposition；Coal dust deposition in pulverized coal preparation system, often becomes the burning things which may cause a fire disaster ignited because of gradual spontaneous combustion.(5) in primary mixture Oxygen concentration；Concentration is high, and explosion hazard is big.(6) primary mixture flow velocity；Flow velocity is low, and coal dust is possible to deposit, and flow velocity is excessively high It may cause electrostatic spark, so primary mixture flow velocity is excessively high, too low to explosion-proof all unfavorable.(7) primary mixture temperature；Temperature Degree is high, and explosion hazard should strictly control pulverizer outlet temperature in operation with regard to big according to Vdaf height.(8) coal dust moisture； Excessively dry coal dust explosion is dangerous big, coal dust moisture will according to the reliability of volatile matter Vdaf, coal dust storage and conveying with And the economy of burning considers determination.

As the container of mass storage coal dust, gas powder melting concn, temperature, water gradation parameter inside pulverized coal bin are required for Strictly controlled.Referring to Fig. 1, moisture absorption pipe 6 and powder sinking tube 7 are arranged in 2 at the top of pulverized coal bin by existing pulverized coal bunker of boiler Center, it is difficult to realize effective control to pulverized coal bin internal environment.

Invention content

The utility model aim is to provide a kind of pulverized coal bin with subangle arrangement formula moisture absorption pipe, solves existing coal dust Moisture absorption pipe existing for storehouse is laid out technical problem unreasonable, that performance of control is poor.

The technical solution of the utility model is：A kind of pulverized coal bin with subangle arrangement formula moisture absorption pipe, including coal dust Storehouse ontology, is characterized in that：Four moisture absorption pipes and two powder sinking tubes, the suction are provided at the top of the pulverized coal bin ontology Pulverized coal bin body interior is stretched into damp pipe one end, and the other end of moisture absorption pipe is connected by damp suction door with mill exhauster inlet tube；Two fall Tube cell is symmetricly set at the top center of pulverized coal bin ontology, and four moisture absorption pipes are symmetricly set on four, the top of pulverized coal bin ontology Vertex.

Further, wherein two moisture absorption pipes are connected after connecting the first damp suction doors with the first mill exhauster inlet tube, in addition two Root moisture absorption pipe is connected after connecting the second damp suction door with the second mill exhauster inlet tube.

Further, connection the first damp suction door two moisture absorption pipes be distributed in pulverized coal bin bodies top be located at diagonal line on Two apex angles on, connection the second damp suction door two moisture absorption pipes be distributed on other two apex angle of pulverized coal bin bodies top.

Further, auger platform is provided at the top of pulverized coal bin ontology, first damp suction door and the second damp suction door are equal It is installed on auger platform.

Further, be provided with sealing top plate at the top of above-mentioned pulverized coal bin ontology, the sealing top plate include metal layer and Concrete layer, the metal layer stretch into the open top of pulverized coal bin ontology, and the concrete layer is located at the top of pulverized coal bin ontology Portion's open outside；The moisture absorption pipe and powder sinking tube are connected to after both passing through sealing top plate with pulverized coal bin body interior.

Further, expansion joint is installed between above-mentioned powder sinking tube and sealing top plate, the moisture absorption pipe and sealing top plate it Between expansion joint is installed.

Further, above-mentioned pulverized coal bin ontology is respectively set four in open-topped four vertex positions and is oriented to expansion Point is equipped with the matched expansion joint of metal layer with sealing top plate on being oriented to expansion point.

The beneficial effects of the utility model are：The utility model can be disappeared by the way that moisture absorption pipe is arranged in peripheral position Except suction dead angle.And powder sinking tube is arranged in center other than it can improve powder falling effect, prevent the adherent deposition of coal dust, Its horizontal distance between moisture absorption pipe can also be increased, generation therebetween is avoided to influence each other.

Description of the drawings

Fig. 1 is the distributing position schematic diagram of moisture absorption pipe at the top of existing pulverized coal bin.

Fig. 2 is the pulverized coal bin top structure schematic diagram (top-level view) that the utility model arranges formula moisture absorption pipe with subangle.

Fig. 3 is the pulverized coal bin top structure schematic diagram (lateral plan) that the utility model arranges formula moisture absorption pipe with subangle.

Reference numeral is as follows：1- pulverized coal bin ontologies, 2- pulverized coal bin bodies tops, 3- auger platforms, 4- seal top plate, and 5- is swollen Swollen section, 6- moisture absorption pipes, 7- powder sinking tubes, 8- metal layers, 9- concrete layers, the first damp suction doors of 10-, 11- the first mill exhauster inlet tubes, The second damp suction doors of 12-, 13- the second mill exhauster inlet tubes.

Specific implementation mode

Referring to Fig. 2, the utility model is a kind of pulverized coal bin for arranging formula moisture absorption pipe with subangle, the knot of preferred embodiment Structure includes pulverized coal bin ontology 1, and the top of pulverized coal bin ontology 1 is provided with four moisture absorption pipes 6 and two powder sinking tubes 7,6 one end of moisture absorption pipe It stretches into pulverized coal bin ontology 1, the other end of moisture absorption pipe 6 is connected by damp suction door with mill exhauster inlet tube.Two powder sinking tubes 7 are symmetrical It is arranged at the top center of pulverized coal bin ontology 1；Four moisture absorption pipes 6 are symmetricly set on four, the top apex angle of pulverized coal bin ontology 1 Place.By the way that moisture absorption pipe 6 is arranged in peripheral position, suction dead angle can be eliminated.And by powder sinking tube 7 be arranged in center in addition to Powder falling effect can be improved, prevented other than the adherent deposition of coal dust, its horizontal distance between moisture absorption pipe can also be increased, avoided Therebetween it generates and influences each other.

As shown in Fig. 2, two moisture absorption pipes are connected after connecting the first damp suction doors 10 with the first mill exhauster inlet tube 11, in addition two Root moisture absorption pipe is connected after connecting the second damp suction door 12 with the second mill exhauster inlet tube 13.In order to reduce length of pipe, reduces and be laid with Two moisture absorption pipes for connecting the first damp suction door 10 are arranged in the same side in the present embodiment by the complexity of circuit, and connection second is inhaled Other two moisture absorption pipes of flood gate 12 are arranged in the other side.

More preferably, two moisture absorption pipes of the first damp suction door 10 of connection can also be distributed over two on diagonal line On apex angle, two moisture absorption pipes of the second damp suction door 12 of connection are distributed on other two apex angle.It, can be effective by arranged in a crossed manner Balanced two adjacent pulverized coal preparation systems, even if there are the feelings that unilateral pulverized coal preparation system is out of service or a damp suction door breaks down Condition remains on the tiny structure that can effectively maintain in pulverized coal bin, without being generated to the univers parameter stability inside pulverized coal bin Excessive influence.

Referring to Fig. 3, the open top of pulverized coal bin ontology 1 is rectangle, and in order to improve overall sealing performance, the present embodiment can be with In the top of pulverized coal bin ontology 1 setting sealing top plate 4, sealing top plate 4 includes metal layer 8 and concrete layer 9, and metal layer 8 stretches into In the open top of pulverized coal bin ontology 1, concrete layer 9 is located at outside the open top of pulverized coal bin ontology 1.Metal layer 8 can select It is manufactured with steel panel, internal metal layer 8 extend into the top of pulverized coal bin ontology 1 using itself excellent flexible ductility It is fitted closely in the horizontal direction in portion's opening and with opening inner wall to realize primary seal, external concrete layer 9 and coal dust Storehouse ontology 1 constitutes homostyructure, is fitted closely in the vertical direction using its own gravity and open top to realize secondary seal. The two-stage sealing structure being made up of inner metal layer and outer concrete layer, has been obviously improved the sealing performance of pulverized coal bin.

Preferably, four vertex positions that the present embodiment is open in pulverized coal bin bodies top are respectively set four and lead To expansion point, the 8 matched expansion joint 5 of metal layer with sealing top plate is installed on being oriented to expansion point, is expanded by installing Section 5 can fully adapt to the expansion and contraction of metal material to limit its horizontal displacement, further ensure that sealing stability.

Auger platform 3, the first damp suction door and second can be arranged at the top of concrete layer 9 in the sealing top plate of the present embodiment Damp suction door can be installed on auger platform 3, be overhauled to the damp suction door of complexity wiring convenient for staff.In order into one Step reduces the sealing leak at tie point, and the present embodiment can also install expansion joint between powder sinking tube 7 and sealing top plate 4, together When moisture absorption pipe 6 and sealing top plate 4 between expansion joint is also installed.

Claims (7)

1. a kind of pulverized coal bin with subangle arrangement formula moisture absorption pipe, including pulverized coal bin ontology, it is characterised in that：The pulverized coal bin sheet Four moisture absorption pipes and two powder sinking tubes are provided at the top of body, pulverized coal bin body interior, moisture absorption pipe are stretched into moisture absorption pipe one end The other end be connected with mill exhauster inlet tube by damp suction door；Two powder sinking tubes are symmetricly set on the top center of pulverized coal bin ontology Place, four moisture absorption pipes are symmetricly set on four, the top vertex of pulverized coal bin ontology.

2. the pulverized coal bin according to claim 1 with subangle arrangement formula moisture absorption pipe, it is characterised in that：Wherein two moisture absorptions Pipe is connected after connecting the first damp suction door with the first mill exhauster inlet tube, in addition after the second damp suction doors of two moisture absorption pipes connection with second Mill exhauster inlet tube is connected.

3. the pulverized coal bin according to claim 2 with subangle arrangement formula moisture absorption pipe, it is characterised in that：Connect first moisture absorption Two moisture absorption pipes of door are distributed on two apex angles of pulverized coal bin bodies top being located on diagonal line, the second damp suction door of connection Two moisture absorption pipes are distributed on other two apex angle of pulverized coal bin bodies top.

4. the pulverized coal bin according to claim 3 with subangle arrangement formula moisture absorption pipe, it is characterised in that：Pulverized coal bin ontology Top is provided with auger platform, and first damp suction door and the second damp suction door are mounted on auger platform.

5. the pulverized coal bin according to any one of claims 1-4 with subangle arrangement formula moisture absorption pipe, it is characterised in that：It is described Sealing top plate is provided at the top of pulverized coal bin ontology, the sealing top plate includes metal layer and concrete layer, and the metal layer is stretched In the open top for entering pulverized coal bin ontology, the concrete layer is located at outside the open top of pulverized coal bin ontology；The moisture absorption pipe It is connected to pulverized coal bin body interior after both passing through sealing top plate with powder sinking tube.

6. the pulverized coal bin according to claim 5 with subangle arrangement formula moisture absorption pipe, it is characterised in that：The powder sinking tube with Expansion joint is installed between sealing top plate, expansion joint is installed between the moisture absorption pipe and sealing top plate.

7. the pulverized coal bin according to claim 6 with subangle arrangement formula moisture absorption pipe, it is characterised in that：The pulverized coal bin sheet Four guiding expansion points are respectively set in open-topped four vertex positions in body, are equipped on being oriented to expansion point and are pushed up with sealing The matched expansion joint of metal layer of plate.