CN202532859U - Non-condensable air pipe system of drier - Google Patents
Non-condensable air pipe system of drier Download PDFInfo
- Publication number
- CN202532859U CN202532859U CN2012200259703U CN201220025970U CN202532859U CN 202532859 U CN202532859 U CN 202532859U CN 2012200259703 U CN2012200259703 U CN 2012200259703U CN 201220025970 U CN201220025970 U CN 201220025970U CN 202532859 U CN202532859 U CN 202532859U
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- CN
- China
- Prior art keywords
- pipe
- condensable air
- condensable
- fixed gas
- drier
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a non-condensable air pipe system of a drier. The non-condensable air pipe system of the drier comprises a plurality of non-condensable air pipes each with one end connected to a plurality of steam heat exchange pipes on an annular air chamber, wherein the other end of each non-condensable air pipe is respectively connected with a non-condensable air collecting pipe; the non-condensable air collecting pipe is connected with a lead-out pipe of a drier barrel; and a section of each non-condensable air pipe, which is connected to each steam heat exchange pipe is bent to form an arc structure, preferably an alpha-shaped structure. Through the alpha-shaped structure of the non-condensable air pipe of the non-condensable air pipe system of the drier, stretching and contracting stress is reduced, and leakage of each non-condensable air pipe per se no longer occurs, but stress at the place where each non-condensable air pipe and the collecting pipe are welded may still cause welding invalidation, thereby leading to leakage. Therefore, the non-condensable air collecting pipe is moved to the outside of the drier barrel, and the non-condensable air pipes after being extended are distributed in a sector manner and are oppositely and vertically connected to the non-condensable air collecting pipe. As a result, the non-condensable air pipe system of the drier, disclosed by the utility model, has the advantages of increasing softness of the non-condensable air pipes and further buffering the stretching and contracting stress for one aspect, and enlarging working space for the construction, ensuring vertical connection between the non-condensable air pipes and the collecting pipe and removing a tangential force for the other aspect.
Description
Technical field
The utility model relates to drying machine, particularly is used for drying machine not the leakage prevention and the drying machine fixed gas guard system of controlling of condensing pipeline.
Background technology
Coal humidifying technology (being called for short CMC:coal moisture control) is a kind of preconditioning technique of coal for coking, promptly reduces and stable shove charge moisture content of coal through the drying of coking coal outside coke oven, reaches the effect of coke oven raising the output and stable operation.
Extensive use at present " steam multitube rotary dryer (Steam Tube Dryer is called for short STD) pattern coal humidifying technology ", drying machine is its main equipment.Dryer inner in circumferential directions the multilayer steam heat exchanging tube, coking coal gets between the drying machine steam heat exchanging tube, low-pressure steam gets in the drying machine steam heat exchanging tube, coking coal carries out indirect heat exchange with low-pressure steam, to reach the purpose that reduces coking coal moisture.
The feed inlet end that coal is handled the damping coal drier is provided with not catch tank, and its effect is that steam and the coal in the drying machine jet chimney carries out understanding some after the heat exchange and become water, and catch tank is not the joint of entering steam pipe and exhaust steam pipe.The about 10mm of the diameter of catch tank not; Be rectangular-shaped two ends and equipment welding, the fixed gas pipe of original fixed gas guard system is a right-angle structure, and an end links to each other with steam heat exchanging tube; The other end all gathers on the cirele bend (steam chest), and fixed gas effluxes through the fixed gas valve on the endless tube.
Drying machine not condenser pipe is that the pipeline air at the initial stage of heating up is replaced and effluxed, and plays the not discharging of condensed gas in the exchange heat pipe, and the pipeline amount of expanding with heat and contract with cold to long 21m compensates simultaneously.But the following problem of normal generation in daily production:
1, the fixed gas pipe should because of stop, reason such as start, frequent expands with heat and contract with cold, and causes fixed gas pipe mechanical fatigue, weld produces the crack at two ends, causes steam leakage.Fixed gas pipe numerous (297) has had a strong impact on normally carrying out of producing in addition, usually is to shut down to mend several, and new leakage place appears again in start once more.
2, fixed gas pipe soldering difficulty when the fixed gas pipe produces the slight crack leakage, must be shut down and treat can implement soldering after the interior complete emptying of steam of heat exchanger tube, and is higher to the soldering required precision.
Summary of the invention
The purpose of the utility model is to design a kind of drying machine fixed gas guard system, eliminates the influence of the leakage of condensing pipeline not to coal damping operation.
For achieving the above object, the technical scheme of the utility model is:
Drying machine fixed gas guard system comprises that an end connects some fixed gas pipes of the some steam heat exchanging tubes on the ring-type air chamber, and the fixed gas pipe other end is connected to the fixed gas manifold trunk, and the fixed gas manifold trunk connects drying machine cylindrical shell fairlead; It is characterized in that the segment pipe that said fixed gas pipe connects steam heat exchanging tube is bent into arc structure.
Further, one section of described fixed gas pipe connection steam heat exchanging tube is bent into α shape structure.
Former fixed gas pipe is 90 ℃ of right-angle structures, and the flexible thermal expansion with self of steam heat exchanging tube causes external carbuncle inconsistent at right-angle structure the place in, is prone to the generation fatigue crack.
The utility model changes ell into arc structure such as alphatrons structure; Help and alleviate the extruding that directly steam right angle break is caused when steam (vapor) outlet is flexible to be connected expansion with the ring-type steam chest; The flexible disconnected extruding that expansion produces with ring-type steam chest link of steam (vapor) outlet all can be absorbed by circulus, and stress reduces greatly.
The beneficial effect of the utility model
Adopt arc structure such as alphatrons structure after the utility model improves; Increase the stress buffer radius; The fixed gas pipe leaks probability and obviously descends, and through the improvement of fixed gas guard system, the fixed gas pipe significantly reduces at the number of times that produces fracture and crack when shrinking that expands; Prolonged the service life of fixed gas pipe, significantly reduced because of the fixed gas pipe leaks the production shutdown number of times that causes.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is the local enlarged diagram of fixed gas pipe among the utility model embodiment.
Fig. 3 is the user mode sketch map of the utility model one embodiment.
The specific embodiment
Referring to Fig. 1～Fig. 3; The drying machine fixed gas guard system of the utility model; Comprise that an end connects some fixed gas pipes 1 of the some steam heat exchanging tubes 20 on the ring-type air chamber 10, fixed gas pipe 1 other end is connected to fixed gas manifold trunk 30, and fixed gas manifold trunk 30 connects drying machine cylindrical shell fairlead; The segment pipe 11 that said fixed gas pipe 1 connects steam heat exchanging tube 20 is bent into arc structure.
In the present embodiment, a segment pipe 11 of described fixed gas pipe 1 connection steam heat exchanging tube 20 is bent into α shape structure.
The fixed gas pipe is fan-shaped reverse vertical with manifold trunk and is connected, and eliminates tangential force.
The utility model transform right angle fixed gas pipe as arc structure such as α shape structure, has reduced flexible stress, and the fixed gas pipe is no longer revealed self, but the stress of catch tank and manifold trunk weld still can not cause weld failure, occurs leaking.The fixed gas manifold trunk is displaced to the external side of drum dryer, the fixed gas pipe prolongs the fan-shaped distribution in back for this reason, and reverse vertical is connected on the fixed gas manifold trunk.Increased the flexibility of fixed gas pipe so on the one hand, further the flexible stress of buffering; Increase the construction operation space on the other hand, can guarantee that fixed gas pipe and manifold trunk are vertical to be connected, eliminated tangential force.
STD moulded coal humidifying technology is to use the most ripe coal humidifying technology in the world, and the utility model can be applied to the enterprise of any use STD coal humidifying technology fully, has the very wide scope of application in the coking technology field.Use the utility model and can effectively control the not leakage of catch tank, satisfy coal damping job requirements.
Claims (2)
1. drying machine fixed gas guard system comprises that an end connects some fixed gas pipes of the some steam heat exchanging tubes on the ring-type air chamber, and the fixed gas pipe other end is connected to the fixed gas manifold trunk, and the fixed gas manifold trunk connects drying machine cylindrical shell fairlead; It is characterized in that the segment pipe that said fixed gas pipe connects steam heat exchanging tube is bent into arc structure.
2. drying machine fixed gas guard system as claimed in claim 1 is characterized in that, one section of described fixed gas pipe connection steam heat exchanging tube is bent into α shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200259703U CN202532859U (en) | 2012-01-19 | 2012-01-19 | Non-condensable air pipe system of drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200259703U CN202532859U (en) | 2012-01-19 | 2012-01-19 | Non-condensable air pipe system of drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202532859U true CN202532859U (en) | 2012-11-14 |
Family
ID=47134038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200259703U Expired - Lifetime CN202532859U (en) | 2012-01-19 | 2012-01-19 | Non-condensable air pipe system of drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202532859U (en) |
-
2012
- 2012-01-19 CN CN2012200259703U patent/CN202532859U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121114 |