CN2773488Y - Return slag cooler of air cushion vehicle - Google Patents
Return slag cooler of air cushion vehicle Download PDFInfo
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- CN2773488Y CN2773488Y CN 200520050540 CN200520050540U CN2773488Y CN 2773488 Y CN2773488 Y CN 2773488Y CN 200520050540 CN200520050540 CN 200520050540 CN 200520050540 U CN200520050540 U CN 200520050540U CN 2773488 Y CN2773488 Y CN 2773488Y
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Abstract
The utility model relates to a return slag cooler of an air-cushion bed. An air-cushion bed and a cooling and heating surface are arranged in a casing provided with a hot air outlet. An air distributing device for the air-cushion bed is composed of an air distributing plate, an air-cushion trench wall, an air chamber and an air inlet, wherein the air distributing plate is a multi-hole plate on which conical small holes are arranged, the air distributing plate, the air-cushion trench wall and a region formed by both ends of the casing form a slim air-cushion trench, one end of the air-cushion trench is provided with a slog outlet, and a slag inlet is arranged above the other end of the air-cushion trench. The utility model has the advantages of high cooling efficiency, safe operation and simple system connection and operation, and can fully utilize the waste heat of slag, improve the fluidization quality and enhance the desulfurizing efficiency and the boiler efficiency. The utility model can be used for cooling other any granular materials.
Description
Technical field
The utility model relates to a kind of return type slag-cooling machine with air cushion bed for CFBB. Also can be used for the cooling of other granular material, such as cooling of smelting boiling roasting furnace material etc.
Background technology
On November 1st, 1997, Standing Committee of the National People's Congress has passed through " Energy Conservation Law of the People's Republic of China ". Wherein, the 39th clear: " encouraging and develop the various fluidized-bed combustion boilers of adaptation China coal ".
Because the coal of fluidized-bed combustion boiler burning wide-size distribution unavoidably oarse-grained deposition can occur, be gathered in the bed bottom and form bottom slag (being commonly called as cold slag), if untimely discharge, the meeting degradating flowing quality reduces burning and desulfuration efficiency, and the problems such as slagging failure occur. The timely discharging that solves bottom slag and cooling are also reclaimed the waste heat of bottom slag, just become CFBB apply with the maximization process in must solution an important topic. It is the indivisible part of fluidized-bed combustion boiler.
Before 1996, the cold slag machine major part that occurs on the China market is spiral and drum-type two large classes. Have domesticly, import is also arranged.
1996, the Finland's 100MW of AHLSTROM company Properties of CFB that China introduces put into operation, adopted the selective single fluidized bed cold slag machine of Finland AHLSTROM company to add the cooling of the cold slag machine of water-cooled cage two-stage. Thereafter, certain boiler factory has introduced U.S. FOSTER-WHEELER circulating fluidized bed technique, comprising the selective cold slag machine of fluidized bed type. Another boiler factory introduces French ALSTOM company Technology of Circulating Fluidized Bed Boiler, wherein also comprises the cold slag machine of another kind of selective fluidized bed type.
In addition, domestic certain university and certain research institute have successively also released their cold slag machine of fluidized bed type.
Table 1 has been listed the overview of fluidized-bed combustion boiler up to now with the bottom slag cooling device.
The performance comparison sheet of several cold slag machine that table 1 is supplied on the market so far
| Cooling scheme | Unit | Spiral | Drum-type | Fluidized bed type | |||
| Wind water cooling | Shed formula | The A boiler factory | The B boiler factory | The C boiler factory | |||
| Design parameter | The power consumption of outlet slag temperature outlet wind-warm syndrome outlet water temperature cooling wind pressure cooling air quantity cooling water dimension consumption | (℃) (℃) (℃) KPa M 3/t SlagT water/tSlag T Steel/t Slag Kw/t Slag | ＜200 / ＜50 / / 10～15 8～11 2.75 | ～200 ～70 ＜40 / ～700 6～8 4～6 1.1 | ＜150 ～70 ＜40 / ～700 6～8 4～6 0.88 | ＜150 200 / 16 4449 9.75 | 150 / / 6 2557 6.25 11.7 | ＜150 / / 15 1750 8.5 12.0 |
| The actual running results | Major advantage | Power consumption is little, compact conformation. | Power consumption is less, and structure is compact. | The machinery-free fault, heat transfer coefficient is high, recyclable waste heat and fine particle. | ||||
| Major defect | Cooling effect is poor; The mechanical component quick abrasion, fault is many, and maintenance load is large, and maintenance cost is high, and service life is short; Equipment is long, and occupation of land is many; The water consumption is large, the waste heat recovery difficulty. | Cooling effect is relatively poor; Slag often appears leaking and leaking in the sealing difficulty that sound cooperates, and the axial expansion mechanical breakdown happens occasionally; May become pressure vessel during drum clip break water, potential safety hazard is arranged; The water consumption is large, the waste heat recovery difficulty. | Coking phenomenon often occurs, and affects safe operation of the boiler; The slag temperature is difficult for cooling and is reduced to below 200 ℃; Heating surface wear is fast; Power consumption is large; Volume is large. | |||||
As seen, this two large class bottom slag cooling device Main Problems is:
1) the cold slag equipment Main Problems of various mechanical drive modes is: mechanical breakdown is many, and maintenance cost is high, affects safe operation of the boiler; Cooling effect is poor, is difficult to reach below 200 ℃ under rated load; Waste heat is difficult to effective recycling.
2) various fluidized bed slag cooling equipment Main Problems are: easily coking affects safe operation of the boiler; Cooling effect is relatively poor, is difficult to reach below 200 ℃ under rated load; Volume is large, and occupation of land is many, and investment is high.
For the problems referred to above, I set about developing the patented product of SCT type air trough type machine for removing cold clinker in 1997, and the patent No. is ZL.99233978.2. Practice shows that it can realize cold slag and defeated slag simultaneously, but because air bath type slag cooling and defeated slag equal inclination angle of downward-sloping 3-8 ° partly runs into certain difficulty in actual use.
1999-2000, the problem that exposes for the cold slag machine of various fluidized bed types, and on the problem basis that the patented product of summing up SCT type air trough type machine for removing cold clinker exists, ZL.99 2 33978.2 patents are improved, ZL.00 225792.0 and ZL.01 2 49355.4 patents have been applied for, its improved main points are separated defeated slag exactly with cold slag, form separately separately patented product. So having applied for the patent No. in 2000 is the gas groove dregs transport machine patent of ZL.00 2.25792.0, it only bears defeated slag task. Calendar year 2001 has applied for that again the patent No. is ZL.01 2 49355.4 air bath type slag cooling machine patents (being called for short the cold slag machine of SC type), bears cold slag task specially.
Facts have proved that ZL.01 2 49355.4 patents have obtained success, basically solved the problem that above-mentioned other various cold slag machines exist. Cooling effect is better, machinery-free fault etc. But practice shows, still has some problems, mainly brings by air distribution plate is downward-sloping, comprising:
1. because air drain is downward-sloping, cause the feed inlet end bed of material thin, the discharge port end bed of material is thick, and from the angle requirement of fluidisation, the feed inlet end air quantity is little, and it is large that the discharge port end air quantity is wanted; , on the other hand, feed inlet end bottom slag temperature is high, and the discharge port end temperature is low, requires again the feed inlet end air quantity large from the cooling angle, and the discharge port end air quantity is little. Be the needs of guaranteeing to cool off, have to increase the air quantity of high temperature section, thereby bottom slag time of staying in bed is reduced, a small amount of high temperature bottom slag footpath is arranged since the overfall escape, namely often there is the red slag of a small amount of heat from slag-drip opening, to discharge, reduced the cooling effect of cold slag machine.
2. because air drain is downward-sloping, feed inlet end is high, and discharge port end is low; It is supporting to be difficult to slag inlet short with the CFBB slag-drip opening and that slag-conveying device is high, limits applying of it.
3. it is many to carry thin solid impurity particle secretly in the heated air, stops up and wearing and tearing hot-air duct system, brings difficulty for the utilization of hot-air, has to set up deduster at hot-air duct.
In order to address these problems, I had applied for again overflow air-cushion bed cold dregs machine patent (being called for short the cold slag machine of SA type) in 2002, and the patent No. is ZL.02 250163.3. It is inclined upwardly air distribution plate by downward-sloping changing into, set up fine particle separator etc. at the hot air outlet place of cold slag machine.
Show that through the operation practice on seven different capabilities of four factories (25,60,75 and 410t/h) CFBB the cold slag machine of SA type produces a desired effect, the user is very satisfied. But along with the raising of each enterprise to environmental consciousness and awareness of saving energy, still there are following two problems in the cold slag machine of SA type, can not satisfy the higher environmental protection of relatively large CFBB and energy-conservation requirement:
The first, sirocco reclamation utilizes problem. The cold slag machine of SA type is the same with the cold slag machine of SC type, and the hot blast after the heating is not directly sent back in the stove. Send back in the stove if reclaim, need to put in addition pressure fan or miscellaneous equipment. Consequently increase equipment, increase investment and operating cost; Also increase simultaneously the operation workload. Sometimes, be the simplification system, hot blast is directly entered boiler back end ductwork, do not reclaim this part waste heat.
The second, the problem of returning of the fine particle that hot blast is carried secretly. Though installed the fine particle separation equipment additional in the cold slag machine of SA type, separative efficiency is not high. Though can reduce the fine particle amount that hot blast is carried secretly, collected fine particle is all drained from cold slag machine slag-drip opening, does not reclaim. The fine particle of still staying in the hot blast brings wearing and tearing to pressure fan or the miscellaneous equipment of setting up. Do not reclaim fine particle in the bottom slag of discharge brings two aspects to CFBB problem: the one, CFBB is to carry out desulfurization with adding the lime stone method, and it is discharged with bottom slag and is not reclaimed, and utilization rate is low. In order to improve the utilization rate of lime stone, need and to return in the stove with the lime stone that furnace bottom is discharged. The 2nd, in order to improve fluidisation matter, improve efficiency of combustion, need the fine particle concentration of continuous replenishment cycles fluidized-bed combustion boiler bottom. This is for the crushing system imperfection of ature of coal variation, coal, particular importance when coal particle's granularity as fired does not reach designing requirement. Therefore should be as far as possible the fine particle of the bottom slag of discharging be returned in the stove.
The utility model content
The technical problems to be solved in the utility model is, the defective for prior art exists proposes a kind of return type slag-cooling machine with air cushion bed, and the waste heat that its cooling effectiveness is high, safe and reliable to operation, can take full advantage of bottom slag is with the raising boiler efficiency; Can also improve the fluidization quality of CFBB, utilization rate and the desulfuration efficiency of raising desulfurizing agent, and the efficiency of combustion of boiler; And can simplify system, simplified structure and the operation that cold slag machine is connected with boiler, and reduce investment outlay thus, improve stability and the security of cold slag machine operation; And the utility model equipment is easy to support the use with various large and medium-sized CFBBs.
Technical solution of the present utility model is, described return type slag-cooling machine with air cushion bed has the cuboid casing, top one end is provided with the cooling heating surface that air bed is arranged in the described casing of hot air outlet and be positioned at air bed, air bed is comprised of casing inner wall and air bed air-distribution device, its design feature is, described air bed air-distribution device by level or the air bed air distribution plate that is in tilted layout, lay respectively at these air bed air distribution plate both sides the air cushion furrow bank, be positioned at the air compartment below the air bed air distribution plate and the air compartment air inlet that is communicated with air compartment forms, described air bed air distribution plate is for having the top porous plate of large tapered openings below little on it, the zone that the air cushion furrow bank of this air bed air distribution plate and its both sides and casing two ends surround forms long and narrow air cushion groove, and air cushion groove one end that is positioned at the hot air outlet below is provided with slag-drip opening and is provided with slag inlet above its other end.
Below the utility model made further specify.
Referring to Fig. 1 to Fig. 3, return type slag-cooling machine with air cushion bed described in the utility model has cuboid casing 3, the cooling heating surface 4 that air bed 7 is arranged in the casing 3 of hot air outlet 5 and be positioned at air bed is arranged at the top, air bed 7 is comprised of casing inner wall and air bed air-distribution device, its design feature is, referring to Fig. 4 and Fig. 5, described air bed air-distribution device by level or the air bed air distribution plate 10 that is in tilted layout, lay respectively at these air bed air distribution plate 10 both sides air cushion furrow bank 9, be positioned at the air compartment (11) below the air bed air distribution plate 10 and the air compartment air inlet 1 that is communicated with air compartment (11) forms; Referring to Fig. 6 to Fig. 8, described air bed air distribution plate 10 is for having the top porous plate of large tapered openings 12 below little on it, this air bed air distribution plate 10 forms long and narrow air cushion groove 8 with the air cushion furrow bank 9 of its both sides and the zone that the casing two ends surround, and air cushion groove one end that is positioned at hot air outlet 5 belows is provided with slag-drip opening 6 and is provided with slag inlet 2 above its other end.
Air bed air distribution plate 10 (or air cushion groove 8) should have enough length, keeps the sufficiently long time in bed to guarantee the particle that is cooled, and the formation temperature gradient, the length-width ratio of air bed air distribution plate 10 answers 〉=12; Described air bed air distribution plate 10 general employings are horizontally disposed, also can tilt up or down as required, and namely this air bed air distribution plate 10 is 0 °-± 8 ° with the scope of horizontal plane angle; Tapered openings 12 back cut diameters on the described air bed air distribution plate 10 are φ 3.0-6.8mm, and lower port diameter is φ 8-10mm; And the percent opening of tapered openings 12 on air bed air distribution plate 10 is 8%-20%, and distribution triangular in shape (referring to Fig. 7), and the aperture pitch is the 7-15 millimeter; The length of the opening area on this air bed air distribution plate 10 (being effective air distribution plate area) equates with wide with wide length with air cushion groove; The length of described opening area and wide effective length and the effective width that is air bed air distribution plate 10.
Air cushion furrow bank 9 is arranged along the both sides of air cushion groove effective width, length and air cushion groove equal in length, and it highly is the 120-300 millimeter; It can be vertical, also can be made into trumpet type; When it is made for trumpet type (referring to Fig. 9 to Figure 11), the height 〉=120mm of the air cushion furrow bank vertical section 13 of its underpart, loudspeaker section 14 outside inclination alpha in air cushion furrow bank top are 12 °≤α≤30 °; Its thickness is decided by Mechanical Structure Strength. Be wear prevention, air cushion furrow bank 9 should adopt the wear resistant cast iron manufacturing. In general, horn-type structure is better.
The width of air compartment 11 should be greater than 1.2 times of air bed air distribution plate 10 effective widths, its height 〉=350mm; The length of single air compartment 11 is 500-2000mm, when the effective length of air bed air distribution plate 10 during greater than the length of single air compartment, a 2-8 air compartment 11 can be set according to the effective length of air bed air distribution plate 10. Each air compartment 11 is equipped with an air compartment air inlet 1.
The lower edge of slag inlet 2 is apart from air bed air distribution plate 10 surface distances 〉=300mm.
Cooling heating surface 4 is the extended surface tube group cylinder iron, also can use seamless steel pipe, is arranged in the top of air cushion groove. It can be vertical layout, also can be lateral arrangement, and its lower edge should be more than or equal to 350 millimeters apart from air bed air distribution plate 10 surfaces. Cast iron extended surface tube group is selected national standard cast iron gilled tube economizer pipe.
Operation principle of the present utility model and process be, temperature is no more than 30 ℃ control air and sends into air compartment 11 from air compartment air inlet 1, sends into air cushion groove 8 through air bed air distribution plate 10, forms the air bed 7 in the upper space casing that enters air cushion groove 8 behind the air cushion. The bottom slag of heat is entered in the upper space casing air bed 7 of air cushion groove 8 by the slag inlet 2 on air cushion groove 8 one end tops, strongly mix with the air of sending here from air cushion groove 8 and to carry out heat exchange, and carry out the strong heat exchange that contacts with the cooling heating surface 4 that is installed in this and be cooled. Afterwards, the bottom slag that is cooled is discharged from the other end slag-drip opening 6 of air cushion groove. The air of sending here from air cushion groove itself is heated in the cooling bottom slag, carries fine particle secretly and discharges from top hot air outlet 5, directly sends CFBB back to.
As known from the above, the technical characterstic of equipment and process of the present utility model has:
(1) cooling effectiveness is high. The maximum characteristics of fluid bed are that gas-solid mixes uniformity of temperature profile strongly in the bed. This feature is used for burning, is best factor; Be used for the cooling down high-temperature material, exactly become fatal obstacle. The cold slag machine of aforementioned various fluidized bed type exposes the poor reason of cooling effect and just is this. The fluidized bed slag cooling machine that has has to add large volume in order to improve cooling effectiveness, and such as multi-selection fluidized bed slag cooling machine etc., investment is large, and expense is high. How in bed, to set up temperature gradient field, overcome the characteristics of fluidized-bed uniformity of temperature profile, improve cooling effectiveness, just become the crux place of novel fluidized bed cold slag machine. The utility model adopts long and narrow air bed, effectively sets up thermograde in bed, has solved this problem. Thereby accomplish that cooling effectiveness is high, cold slag body is long-pending little, is easy to realize that cold slag machine maximizes, and satisfies the requirement of the various fluidized-bed combustion boiler cooling bottom slags of the above large quantity of slag of 10t/h.
(2) safe and reliable to operation. At present, it is exactly easily coking in the bed that there are another serious problems jointly in the cold slag machine of other various fluidized bedizations, the safe operation that jeopardizes cold slag machine and boiler. Have the cold slag machine of mounted fluidized bedization is changed again changes, and still do not deal with problems. Clear-cut the stopping using that has. Trace it to its cause, they all are to adopt hood-type grid plate, and complex structure is due to fluidizing velocity is low. This patent adopts porous plate, and simple in structure, fluidizing velocity is higher, has fundamentally avoided the possibility of coking, guarantees the safe operation of boiler.
(3) take full advantage of the waste heat of bottom slag, improve boiler efficiency, can energy savings 0.5%～6%.
A, the cooling water that is used for the cooling heating surface can be used chemical water, send into oxygen-eliminating device after the heating; Also can with the condensed water of steam turbine, send into low-pressure heater after the heating. Thereby reduce the steam consumption of oxygen-eliminating device or low-pressure heater, energy savings. Certainly, also available industry water or running water are made other purposes after the heating.
Hot blast after b, the heating need not through any middle device, directly sends into and is used as Secondary Air in the stove, improves the efficiency of combustion of boiler, energy savings.
(4) improve the fluidization quality of CFBB, improve boiler combustion efficiency, can energy savings 0.2%～2%. Simultaneously, stability and the security performance of boiler operatiopn have been improved. Fine particle returns in the stove, can increase the fine particle concentration of circulating fluidized bed boiler bottom part, improve fluidization quality, avoid occurring in the cycle fluidized bed false fluidisation phenomenon and the cokings such as bridging, the efficiency of combustion and operation stability and the security that improve CFBB. This is effective especially to coal-fired ature of coal variation or when entering stove coal particle degree and not reaching designing requirement.
(5) utilization rate and the desulfuration efficiency of raising desulfurizing agent. Desulfurizing agent returns recycling in the stove, can improve utilization rate and the desulfuration efficiency of desulfurizing agent.
(6) simplified the system that cold slag machine is connected with boiler, reduced investment outlay and operating cost. Because hot blast and fine particle directly return in the stove, do not need to set up separately the equipment such as blower fan, have simplified the system that cold slag machine is connected with boiler, reduce investment outlay and operating cost.
(7) simplify the structure, simplified operation, improve stability and the security of cold slag machine operation. Comprise:
A, air bed air distribution plate are horizontally disposed, and each air compartment imported valve aperture does not need to adjust after need only the Temperature Distribution situation is done disposable adjustment in the root a tree name bed before starting operation again. Only need later on the quantity of slag of root a tree name cooling how much to adjust total air valve, simplified operation.
B, cancellation overfall and accident slag-drip opening simplify the structure. Cooled slag can only be discharged from cold slag motor spindle slag-drip opening, has further improved cooling effect, stops out red slag phenomenon fully.
(8) be easy to support the use with various large and medium-sized CFBBs. Because above each characteristic, the cold slag machine of the utility model type is the matching used ideal equipment of various CFBBs.
(9) equipment and process of the present utility model can be used for the cooling of other any granular material.
Description of drawings
Fig. 1 is a kind of embodiment master's TV structure schematic diagram (arrow A is coolant outlet, and B is cooling water inlet) of the cold slag machine of the utility model;
Fig. 2 is the top view of device shown in Figure 1;
Fig. 3 is A among Fig. 11-A
1Cross-sectional schematic;
Fig. 4 is the utility model air bed air-distribution device master TV structure schematic diagram;
Fig. 5 is the left view of member shown in Figure 4;
Fig. 6 is the structural representation of the utility model air bed air distribution plate 10;
Fig. 7 is A among Fig. 62The position amplification assumption diagram;
Fig. 8 is B among Fig. 71-B
1To sectional structure;
Fig. 9 is the utility model air cushion furrow bank 9 main TV structures;
Figure 10 is the left TV structure figure of member shown in Figure 9;
Figure 11 is member plan structure shown in Figure 9.
In the drawings:
1-air compartment air inlet, the 2-slag inlet,
The 3-casing, 4-cools off heating surface,
The 5-hot air outlet, the 6-slag-drip opening,
The 7-air bed, the 8-air cushion groove,
9-air cushion furrow bank, 10-air bed air distribution plate,
The 11-air compartment, the 12-tapered openings,
13-air cushion furrow bank vertical section, 14-air cushion furrow bank top loudspeaker section.
The specific embodiment
According to accompanying drawing and the above-mentioned cold slag machine of the utility model, the length-width ratio of air bed air distribution plate 10 is 20, is arranged in parallel with horizontal plane, and the upper and lower bore of tapered openings 12 is respectively Φ 5 and Φ 10, and percent opening is 15%, distribution triangular in shape, 12 millimeters of aperture pitches; Air cushion furrow bank 9 height 200mm are horn-type structure, the vertical section 13 height 120mm of its underpart, top loudspeaker section 14 inclination alpha=12 °; Air compartment 11 width are 1.2 times of air bed air distribution plate 10 effective widths, highly are 400mm; Single air compartment 11 length are 1100mm, arrange altogether four; The lower edge of slag inlet 2 is 350mm apart from air bed air distribution plate 10 surface distances; Cooling heating surface 4 adopts cast iron extended surface tube group, selects national standard cast iron gilled tube economizer pipe, vertically is arranged in the air cushion groove top, and it is lower to be 500mm along the distance apart from air bed air distribution plate 10; The cross section mean air flow speed of air cushion groove 8 is the 3-5 meter per second, the cross section mean air flow speed of air cushion groove 8 top air beds 7 is 0.8-1.2 meter per second, air velocity 20-42 meter per second in the tapered openings enters the air themperature of air compartment 11≤30 ℃, air velocity 10 meter per seconds; Air compartment 11 operating pressure 8000Pa-12000Pa; Heated air directly returned in the CFBB through communicating pipe.
Claims (8)
1. return type slag-cooling machine with air cushion bed, cuboid casing (3) is arranged, the cooling heating surface (4) that in the casing (3) of hot air outlet (5) air bed (7) is arranged and be positioned at air bed (7) is arranged at the top, air bed (7) is comprised of casing inner wall and air bed air-distribution device, it is characterized in that, described air bed air-distribution device is by level or the air bed air distribution plate (10) that is in tilted layout, lay respectively at the air cushion furrow bank (9) of these air bed air distribution plate (10) both sides, the air compartment air inlet (1) that is positioned at the following air compartment of air bed air distribution plate (10) and is communicated with air compartment forms, described air bed air distribution plate (10) is for having the top porous plate of large tapered openings (12) below little on it, this air bed air distribution plate (10) forms long and narrow air cushion groove (8) with the air cushion furrow bank (9) of its both sides and the zone that the casing two ends surround, and air cushion groove one end that is positioned at hot air outlet (5) below is provided with slag-drip opening (6) and is provided with slag inlet (2) above its other end.
2. return type slag-cooling machine with air cushion bed according to claim 1 is characterized in that, the length-width ratio of described air bed air distribution plate (10) 〉=12, and the scope of it and horizontal plane angle is 0 °-± 8 °.
3. return type slag-cooling machine with air cushion bed according to claim 1 is characterized in that, the back cut diameter of the upper conical aperture of described air bed air distribution plate (10) (12) is φ 3.0-6.8mm, and lower port diameter is φ 8-10mm; And the percent opening of described tapered openings (12) on air bed air distribution plate (10) is 8%-18%, and distribution triangular in shape, and its pitch is the 7-15 millimeter; The length of the opening area on the air bed air distribution plate (10) equates with wide with the length of wide same air cushion groove (8).
4. return type slag-cooling machine with air cushion bed according to claim 1 is characterized in that, the length of described air cushion furrow bank (9) and air cushion groove (8) equal in length, and it highly is the 120-300 millimeter.
5. return type slag-cooling machine with air cushion bed according to claim 4 is characterized in that, described air cushion furrow bank (9) is vertical or trumpet type; Height 〉=the 120mm of the air cushion furrow bank vertical section (13) of its underpart when it is trumpet type, air cushion furrow bank top loudspeaker section (14) outwards inclination alpha is 12 °≤α≤30 °.
6. return type slag-cooling machine with air cushion bed according to claim 1 is characterized in that, the width of air compartment (11) is greater than 1.2 times of air bed air distribution plate (10) opening area width, its height 〉=350mm; The length of single air compartment (11) is 500-2000mm, is provided with 1-8 air compartment (11), and each air compartment (11) is equipped with an air compartment air inlet (1).
7. return type slag-cooling machine with air cushion bed according to claim 1 is characterized in that, the lower edge of described slag inlet (2) is apart from air bed air distribution plate (10) surface distance 〉=300mm.
8. return type slag-cooling machine with air cushion bed according to claim 1 is characterized in that, described cooling heating surface (4) adopts cast iron extended surface tube group or seamless steel pipe, vertically arrange or lateral arrangement, its lower along apart from air bed air distribution plate 10 surfaces 〉=350 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050540 CN2773488Y (en) | 2005-03-23 | 2005-03-23 | Return slag cooler of air cushion vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050540 CN2773488Y (en) | 2005-03-23 | 2005-03-23 | Return slag cooler of air cushion vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN2773488Y true CN2773488Y (en) | 2006-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200520050540 Expired - Fee Related CN2773488Y (en) | 2005-03-23 | 2005-03-23 | Return slag cooler of air cushion vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455886C (en) * | 2005-03-23 | 2009-01-28 | 毛鸿禧 | Return type slag-cooling machine with air cushion bed and its operation process |
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- 2005-03-23 CN CN 200520050540 patent/CN2773488Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455886C (en) * | 2005-03-23 | 2009-01-28 | 毛鸿禧 | Return type slag-cooling machine with air cushion bed and its operation process |
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