CN201245375Y - Gas injection device for powdery material pressure conveying system - Google Patents
Gas injection device for powdery material pressure conveying system Download PDFInfo
- Publication number
- CN201245375Y CN201245375Y CNU2008201082028U CN200820108202U CN201245375Y CN 201245375 Y CN201245375 Y CN 201245375Y CN U2008201082028 U CNU2008201082028 U CN U2008201082028U CN 200820108202 U CN200820108202 U CN 200820108202U CN 201245375 Y CN201245375 Y CN 201245375Y
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- CN
- China
- Prior art keywords
- gas distribution
- gas
- injection apparatus
- gas injection
- scatterer
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Abstract
The utility model relates to a gas injection device of a pressurized conveying system for powder materials, which comprises an air intake catheter, a sealing pad, a sealing component, a gas distribution pipe arranged at the inner side of a powder material conveying tank and two rows of scatters uniformly distributed on the gas distribution pipe. The utility model has the advantages of compact structural design, good heat resistance, high compressive strength, high impact resistance, good uniformity of gas distribution, small volume, high reliability and the like. When the utility model is used, the high pressure gas can be injected into the powder material conveying system in a short term, and simultaneously the power materials is prevented from causing a bridge, blockage and the like in the process of being conveying. Therefore, the utility model is applicable to the pressurized conveying system for concentrated phases of coal powder or other material powder.
Description
Technical field
The utility model belongs to the granular material transportation art, particularly a kind of gas injection apparatus that is used for the granular material pressure-flow system.
Background technology
Because the Mineral Resources in China present situation is many coals oil starvation weak breath.Coal is used in industries such as electric power, iron and steel, chemical industry, building materials widely as one of raw material.Particularly in large power plant, steel mill and chemical plant, be the scale, the automation that realize producing, coal powder conveying system has become one of gordian technique of process units, as the coal dust high pressure concentrated phase conveying system in the steel industry steelworks pulverized coal injection device.In the coal powder conveying system, Pulverized Coal Bin need be finished the transformation from low pressure to the high pressure or from the high pressure to low pressure, and the coal dust lock hopper is a key equipment wherein.On the technology, need to adopt a certain critical component to carry out the even pressurising and the pressure release of high pressure gas for the coal dust lock hopper, avoid coal dust under the high pressure effect, in warehouse, to produce obstruction, bridge formation situation simultaneously, guarantee the smooth and easy conveying of coal dust, thereby guarantee carrying out smoothly of whole production flow process.Under this background, research and develop this new gas injection device to finish the above function, this device also can be used for as unclassified stores mesohigh concentrated phase conveying systems such as medicinal powder.
Summary of the invention
The purpose of this utility model is to provide a kind of gas injection apparatus that is used for the granular material pressure-flow system, can at short notice high pressure gas be injected the granular material delivery system, avoid the bridge formation that granular material produces, the generation of stopping state simultaneously in course of conveying.
In order to achieve the above object, the utility model is achieved in that
A kind of gas injection apparatus that is used for the granular material pressure-flow system, it comprises: packing seal, containment member 3, gas distribution tube 4, scatterer 5, the set collar 6 between the air induction conduit 1, filler bin that inserts filler bin from the outside and the air induction conduit 1, be connected air induction conduit and gas distribution tube 7, two gas distribution tubes 4 of flame diversion trough vertically with the air induction conduit bolted connection; Well-distributed two row's scatterers 5 are arranged on the gas distribution tube, and the line of centers of scatterer is symmetrically distributed along the gas distribution tube axis normal.
Described containment member 3 has at least one group of groove that cooperatively interacts and O shape ring with air induction conduit 1 facing surfaces.
This material that installs each parts is a corrosion-resistant steel.
The exit end of described air induction conduit 1 has the mozzle of a three-port structure.
Described gas distribution tube 4 is a ring-like cross section pipe, and there is set collar at two ends.
Described gas distribution tube 4 one ends sealing, the other end and mozzle carry out bolted connection with form of flanges.
The diameter D of described gas distribution tube 4 is 100～150mm, and its length L is determined according to the quantity N and the diameter D of scatterer, and satisfied following relation: L=N* (D+30)+200mm.
Described scatterer 5 comprises base and metal porous, and injection direction points to powder transfer pot inboard.
Between metal porous and the freeing pipe for being welded to connect.
The quantity N of scatterer determines according to the diameter D of gas flow Q and scatterer, and satisfies following relation: N=(2～5) * Q/ (π * D
2).
Described metal porous material is stainless steel cloth or powder.
Metal porous is circular, and the aperture is 5～40 μ m, and adjacent metal porous chips width between centers is D+30mm, and pore-solids ratio is greater than 20%, and penetrablility is 5～20 * 10
-13m
2
Compared with prior art, the advantage of this device is: the compressive resistance height, high temperature oxidation resistance and corrosion beharvior excellence, running resistance is low, structure design is compact, the distribution of gas good uniformity, take up room little, reliability is high.
Description of drawings
Fig. 1 is the generalized section of gas injection apparatus of the present utility model.
Fig. 2 is the generalized section of two 0 shape ring containment members 3 among Fig. 1.
Fig. 3 is the generalized section of gas flow guiding groove 7 among Fig. 1.
Fig. 4 is the generalized section of scatterer 5 among Fig. 1.
Fig. 5 is that the tangential section of two row's scatterers among Fig. 4 is arranged scheme drawing.
In the above-mentioned accompanying drawing:
1-air induction conduit 2-butt flange (linking to each other) 3-containment member with the powder warehouse
4-gas distribution tube 5-scatterer 6-set collar 7-flame diversion trough
The specific embodiment
Below in conjunction with accompanying drawing in detail an embodiment of the present utility model being described in detail, is the gas injection apparatus that is used for coal dust concentrated phase pressure-flow system.
The gas injection apparatus that present embodiment provides has scatterer on gas distribution tube of gas distribution tube, two rankings that an air induction conduit, two be positioned at the Pulverized Coal Bin inboard, is positioned at being convenient to and Pulverized Coal Bin bonded assembly set collar of gas distribution tube two ends.For avoiding the coal dust corrosion, all component in the gas injection apparatus all adopts stainless steel material, the 316L or 304 trades mark.Its chemical constitution is as shown in table 1 below.
Table 1
| Material | C％ | Si％ | Mn％ | P％ | S％ | Cr％ | Ni％ | Mo％ | Fe％ |
| 316L | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16～18 | 10～14 | 2.0～ 3.0 | Surplus |
| 304 | ≤0.08 | ≤0.75 | ≤2.00 | ≤0.040 | ≤0.030 | 18～20 | 8～11 | — | Surplus |
Air induction conduit 1 ecto-entad inserts Pulverized Coal Bin, and its middle part is welded with the forging of a band dual-cavity, as shown in Figure 2.Its purpose is for solving the sealing problem between gas injection apparatus and the Pulverized Coal Bin, can not produce leakage problem between itself and Pulverized Coal Bin when guaranteeing that high pressure gas carry out pressurising and release technological process by this gas injection apparatus.Butt flange 2 on the air induction conduit 1 carries out bolted connection with the flange on the Pulverized Coal Bin air inlet pipe.Air induction conduit 1 end is welded with a mozzle with three-port structure, the two ends in addition of this mozzle are connected with two gas distribution tubes 4 respectively, air induction conduit 1 is perpendicular with gas distribution tube 4 line of centerss, the sealing of gas distribution tube 4 one ends, the other end and flame diversion trough carry out bolted connection with form of flanges, be convenient to dismounting, its type of attachment as shown in Figure 3.As shown in Figure 4, two row's scatterers, 5 tangent lines are distributed in gas distribution tube 4 axis both sides at an angle of 90 symmetrically, and point to the Pulverized Coal Bin inboard.Sintering metal porous chips on the scatterer 5 is mealy structure or screen net structure.Gas distribution tube 4 two ends are provided with two set collars 6, and gas distribution tube is fixed on the coal dust bulkhead.
When technological requirement in Pulverized Coal Bin during pressurising, high pressure gas enter gas distribution tube 4 by the air induction conduit in the gas injection apparatus 1, and evenly spurt in the Pulverized Coal Bin rapidly by scatterer 5, micron order sintering metal porous chips on the scatterer 5 can guarantee the rectangular distribution of air-flow, high velocity air can make the coal dust in the fine coal storehouse obtain effectively loose simultaneously, avoid coal dust to harden, stop up, build bridge, thereby make coal dust can be continuously, evenly, stably concentrated phase is carried, guarantee that commercial production carries out smoothly.
When technological requirement during from the Pulverized Coal Bin release, high pressure gas flow out warehouse by gas injection apparatus, micron-sized coal dust in the gas injection apparatus prevention Pulverized Coal Bin is along with gas flows out Pulverized Coal Bin together, thereby actv. has guaranteed the cleanliness of high pressure gas, make on the one hand the high pressure gas repeated usage that can circulate, greatly reduce the worn-down influence of high pressure gas on the other hand follow-up equipment.
In general, in the coal dust concentrated phase conveying system, each Pulverized Coal Bin needs symmetrical supporting installation 3～8 cover gas injection apparatus.
The process for making of gas injection apparatus is as follows:
1, the preparation of induction tract
Induction tract comprise air induction conduit 1, with source of the gas pipeline flange connecting, with Pulverized Coal Bin bonded assembly butt flange 2, the band dual-cavity containment member 3, with gas distribution tube bonded assembly flame diversion trough.All parts connect in the argon arc welding mode.Guarantee the central lines of each parts during welding, levelness is not more than 2mm as far as possible.
2, the preparation of gas distribution tube
Gas distribution tube adopts the stainless steel tube of tool ring section structure, and its diameter is 100～150mm, and its length (L) is determined according to the quantity (N) and the diameter (D) of scatterer.
L＝*N(D+30)+200mm
Gas distribution tube is with the some circular ports of method cutting two rows of water cutting, and its size is determined according to scatterer.Be generally 30～80mm.Gas distribution tube one end sealing, the other end is welded with square flange, is convenient to be connected with mozzle on the air inlet pipe.Its gas distribution tube is parallel with the warehouse wall when installing for the assurance gas injection apparatus, and the gas distribution tube levelness requires to be not more than 2mm.
3, scatterer
Scatterer comprises base and sintering metal porous chips.Scatterer is connected in the argon arc welding mode with gas distribution tube.The quantity of scatterer (N) is determined according to gas flow (Q) and scatterer diameter (D).
N＝(2～5)*Q/(π*D
2)
Sintering metal porous chips on the scatterer adopts partial metallurgy compression molding or multi-layer silk screen composite rolling+vacuum sintering method to be prepared from.
Present embodiment at first inserts air induction conduit the coal dust warehouse when mounted, and guarantees that the leak tightness of air induction conduit and warehouse is intact; In Pulverized Coal Bin, two gas distribution tubes are vertically mounted on the both sides of induction tract flame diversion trough then, and tighten with bolt; Gas injection apparatus is fixed in the coal dust warehouse with set collar at the gas distribution tube two ends at last.During operation, the applying working condition condition is as follows:
Serviceability temperature: 80-110 ℃;
Working pressure: 0.1～6MPa;
Pulverized Coal Bin volume: 60m
3
Gas flow: 10m
3/ min.
Be total to using gases injection device 4 covers in this system.Single cover gas injection apparatus scatterer diameter phi 60mm, 42 of quantity, sintering metal porous chips aperture 5 μ m, penetrablility reaches 6.0 * 10
-13m
2, be multi-layer silk screen composite rolling sintering structure.
During use, this Pulverized Coal Bin is pressurized to 6MPa from 0.1MPa and needs 15～20min altogether, unloads from 6MPa to be depressed into 0.1MPa and to need 6～8min altogether, carries solid-gas ratio to reach 480～550, and operation conditions is good, realized the high pressure coal dust continuously, evenly, concentrated phase carries.
Claims (12)
1. gas injection apparatus that is used for the granular material pressure-flow system, it comprises: packing seal, containment member (3), gas distribution tube (4), scatterer (5), the set collar (6) between the air induction conduit (1), filler bin that inserts filler bin from the outside and the air induction conduit (1), be connected the flame diversion trough (7) of air induction conduit and gas distribution tube, it is characterized in that: two gas distribution tubes (4) vertically with the air induction conduit bolted connection; Well-distributed two row's scatterers (5) are arranged on the gas distribution tube, and the line of centers of scatterer is symmetrically distributed along the gas distribution tube axis normal.
2. device as claimed in claim 1 is characterized in that: described containment member (3) has at least one group of groove that cooperatively interacts and O shape ring with air induction conduit (1) facing surfaces.
3. device as claimed in claim 1 is characterized in that: this material that installs each parts is a corrosion-resistant steel.
4. device as claimed in claim 1 is characterized in that: the exit end of described air induction conduit (1) has the mozzle of a three-port structure.
5. device as claimed in claim 1 is characterized in that: described gas distribution tube (4) is ring-like cross section pipe, and there is set collar at two ends.
6. gas injection apparatus as claimed in claim 1 is characterized in that: described gas distribution tube (4) one ends sealing, the other end and mozzle carry out bolted connection with form of flanges.
7. gas injection apparatus as claimed in claim 1 is characterized in that: the diameter D of described gas distribution tube (4) is 100～150mm, and its length L is determined according to the quantity N and the diameter D of scatterer, and satisfied following relation: L=N* (D+30)+200mm.
8. gas injection apparatus as claimed in claim 1 is characterized in that: described scatterer (5) comprises base and metal porous, and injection direction points to powder transfer pot inboard.
9. gas injection apparatus as claimed in claim 8 is characterized in that: between metal porous and the freeing pipe for being welded to connect.
10. gas injection apparatus as claimed in claim 1 is characterized in that: the quantity N of scatterer determines according to the diameter D of gas flow Q and scatterer, and satisfies following relation: N=(2～5) * Q/ (π * D
2).
11. gas injection apparatus as claimed in claim 8 is characterized in that: described metal porous material is stainless steel cloth or powder.
12. gas injection apparatus as claimed in claim 8 is characterized in that: metal porous the aperture is 5～40 μ m for circular, and adjacent metal porous chips width between centers is D+30mm, and pore-solids ratio is greater than 20%, and penetrablility is 5～20 * 10
-13m
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201082028U CN201245375Y (en) | 2008-05-30 | 2008-05-30 | Gas injection device for powdery material pressure conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201082028U CN201245375Y (en) | 2008-05-30 | 2008-05-30 | Gas injection device for powdery material pressure conveying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201245375Y true CN201245375Y (en) | 2009-05-27 |
Family
ID=40729192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201082028U Expired - Lifetime CN201245375Y (en) | 2008-05-30 | 2008-05-30 | Gas injection device for powdery material pressure conveying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201245375Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103657337A (en) * | 2012-09-13 | 2014-03-26 | 承源環境科技企業有限公司 | Adsorption material blower |
| 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 |
-
2008
- 2008-05-30 CN CNU2008201082028U patent/CN201245375Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103657337A (en) * | 2012-09-13 | 2014-03-26 | 承源環境科技企業有限公司 | Adsorption material blower |
| CN103657337B (en) * | 2012-09-13 | 2017-02-08 | 承源環境科技企業有限公司 | adsorption material blower |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100081 Haidian District Institute of South Road, Beijing, No. 76 Patentee after: Antai Science and Technology Co., Ltd. Patentee after: SINOPEC Ningbo Engineering Company Limited Patentee after: Yueyang Sinopec Shell Coal Gasification Co., Ltd. Address before: 100081 Haidian District Institute of South Road, Beijing, No. 76 Patentee before: Antai Science and Technology Co., Ltd. Patentee before: Sinopec Ningbo Engineering Co., Ltd. Patentee before: Yueyang Sinopec Shell Coal Gasification Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090527 |