CN201162699Y - Stationary blade position limiter of blast furnace blower - Google Patents
Stationary blade position limiter of blast furnace blower Download PDFInfo
- Publication number
- CN201162699Y CN201162699Y CNU2008200326311U CN200820032631U CN201162699Y CN 201162699 Y CN201162699 Y CN 201162699Y CN U2008200326311 U CNU2008200326311 U CN U2008200326311U CN 200820032631 U CN200820032631 U CN 200820032631U CN 201162699 Y CN201162699 Y CN 201162699Y
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- China
- Prior art keywords
- stator blade
- blast furnace
- cylinder rod
- furnace blower
- transmission mechanism
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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.)
- Expired - Fee Related
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- Blast Furnaces (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a stop device of a stator blade of a stove blower, which belongs to the technical field of blowers. The stop device comprises a hydraulic transmission mechanism that comprises a cylinder rod extending from the hydraulic transmission mechanism. The tip of the cylinder rod is inserted into the extension chamber of the hydraulic transmission mechanism. The rod body of the cylinder rod has transmission joint with the stator blade of the stove blower. The improvement of the utility model is that a stop block is arranged between the inner wall of the extension chamber and the tip of the cylinder rod in the extension chamber hydraulic transmission mechanism. Owing to the stop block, the motion of the cylinder rod is limited. So in the event that a protecting system makes a false action when a machine set is in operation, the angles of the stator blade and an inverted valve are not closed completely. Therefore, an air feeding pipe network system can maintain certain air pressure to ensure that the inverted valve is not closed completely when dithering, thus avoiding the interruption of air feeding and decreasing accidental damage, such as the interruption of air feeding and dregs pouring, and the like, to the maximum. So the stop device of the stator blade of the stove blower is worth being used and promoted in metallurgical enterprises at home and abroad.
Description
Technical field
The utility model relates to a kind of blast furnace blower stator blade limit stoper, and the stator blade limit stoper of the adjustable blast furnace blower of especially a kind of stator blade belongs to the blower technical field.
Background technique
The adjustable Axial Flow Compressor of stator blade is because of having efficient height, regulating working conditions wide ranges, advantage such as sensitive steady, thereby is used widely in blast furnace smelting process.
Stator blade operation control is the core technology of stator blade adjustable fan.Usually, the stator blade limit stoper of the adjustable blast furnace blower of blower fan stator blade mainly is made of power oil station, servo-control system, electrohydraulic control and fluid drive mechanism.Wherein, the power oil station provides the working oil of 12.5MPa for the adjustable blast furnace blower stator blade of stator blade limit stoper, servo-control system adopts the angle of PID input feedback system control stator blade, electrohydraulic control then converts the electrical signal amplification to hydraulic pressure signal, and fluid drive mechanism directly drives the stator blade action.
The adjustable blast furnace blower of stator blade is when the normal air feed of blast furnace, and static blade angle need be adjustable continuously between 22 °～79 ° according to technological requirement.When surge or adverse current operating mode appear in unit, must take complete shut-down stator blade to 22 °, the method for emptying guarantees the safety of equipment behind the employing machine simultaneously.
In actual production process, exist many reasons to cause and cause the disturbance of blower stator blade control system, malfunction.Idle stroke of the losing of Cuo Wu larynx difference sampled signal, stator blade aperture feedback signal, stator blade fluid drive mechanism or the like for example; the misoperation of blower protective system is caused in the capital; its result causes behind the machine pressure moment sharply to reduce to minimum; the positive closing under blast furnace ductwork pressure, weight and compressed air pressure effect of air-out check valve; thereby cause the disconnected wind of blast furnace to irritate the slag accident; blast furnace can't resume production in short time, makes ironmaking, steel-making be absorbed in the reduce or stop production state, and economic loss is huge.
Understand according to the claimant, but stator blade operation control technique does not still have ripe experience for reference at present, accident took place all problem occurring aspect the stator blade operation control in the many Iron And Steel Plant that use the type unit.For example disconnected wind accident takes place 13 times in certain Ceng Yinian of steel mill, the locked stator blade of finally having to changes the adjusting blast that leaks informaton into; The variable speed adjusting has finally been selected because of solving stator blade control problem by certain steel mill; Air feed is not only interrupted because of the stator blade control fault in certain steel mill 2002, and causes unit badly damaged.
The model utility content
The purpose of this utility model is: at the problem that above prior art exists, propose a kind of can be when misoperation appears in the blower protective system, the blast furnace blower stator blade limit stoper of avoiding static blade angle complete shut-down and air-out check valve to close.
In order to reach above purpose, blast furnace blower stator blade limit stoper of the present utility model comprises fluid drive mechanism, contain in the described fluid drive mechanism by the piston rod that stretches out in the oil hydraulic cylinder, insert in the extension cavity of fluid drive mechanism the termination of described piston rod, the shaft of described piston rod is connected with the transmission of blast furnace blower stator blade, its improvements are that the extension cavity internal fixation of described fluid drive mechanism has limiting stopper, and described limiting stopper is between extended cavity inwall and piston rod end.
After in the adjustable blast furnace blower of stator blade, above-mentioned stator blade limit stoper being set; because stopping of limiting stopper; the movement travel of piston rod is restricted; even when misoperation appears in the unit running process protective system; static blade angle and air-out check valve can not closed fully yet; thereby keep the air feed pipe network system and keep certain blast; guarantee the moment shake of air-out check valve and unlikelyly close fully; avoided the interruption air feed; reduce the disconnected wind of stove to greatest extent and irritate the accidental damage of slag and so on, at home and abroad smelter has popularizing value.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is an embodiment's of the utility model a structural representation.
Fig. 2 is the perspective view of limiting stopper among Fig. 1.
Embodiment
Embodiment one
The blast furnace blower stator blade limit stoper of present embodiment contains in the fluid drive mechanism as shown in Figure 1 by the piston rod 2 that stretches out in the oil hydraulic cylinder 4, and insert in the extension cavity 1 of fluid drive mechanism the termination of this piston rod.The shaft of piston rod 2 is connected (not shown) with the transmission of blast furnace blower stator blade.Extending cavity 1 internal fixation at fluid drive mechanism has limiting stopper 2, and the shape of this limiting stopper as shown in Figure 2, and is L-shaped, and between extended cavity 1 inwall and piston rod 1 termination, two outer vertical surfaces rely on respectively on the bottom surface and sidewall of extended cavity 1.
The blast furnace blower left and right sides is settled the above-mentioned stator blade limit stoper of a cover respectively.The result, drive piston rod stroke that stator blade rotates and be reduced to h-s, promptly be restricted to the minimum angle of stator blade in the unit normal course of operation and can only close the angle determined to h-s (this angle can be opened needed external force and is provided with according to overcoming in the air-line system air-out check valve) by the h of corresponding omnidistance (22 °～79 °) among Fig. 1.This angle can suitably be amplified as required, but the operation can not influence conventional plus-minus blast the time, generally be no more than stator blade regulate omnidistance 1/3rd, to avoid excessive energy waste that causes of the blower outlet quenching system amount of leaking informaton and noise pollution.Experiment shows, because the effect of this blast furnace blower stator blade limit stoper when running into accident, can limit stator blade and close to 38 °.As a result, stator blade rocks between 45 ° at 38 °, still can keep the blast pressure operation of air feed system 280KPa, has won the time for the startup of standby unit, has avoided unit anti-asthma protection action to interrupt the serious consequence that air feed causes.
The device of present embodiment has improved the Security of blower operation effectively since dropping into application, guaranteed the stable operation that blast furnace is produced, and has avoided the repeatedly generation of accident.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (3)
1, a kind of blast furnace blower stator blade limit stoper, comprise fluid drive mechanism, contain in the described fluid drive mechanism by the piston rod that stretches out in the oil hydraulic cylinder, insert in the extension cavity of fluid drive mechanism the termination of described piston rod, the shaft of described piston rod is connected with the transmission of blast furnace blower stator blade, it is characterized in that the extension cavity internal fixation of described fluid drive mechanism has limiting stopper, described limiting stopper is between extended cavity inwall and piston rod end.
2, according to the described blast furnace blower stator blade of claim 1 limit stoper, it is characterized in that: described limiting stopper is L-shaped.
3, according to the described blast furnace blower stator blade of claim 2 limit stoper, it is characterized in that: two outer vertical surfaces of described limiting stopper rely on respectively on the bottom surface and sidewall of extended cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200326311U CN201162699Y (en) | 2008-02-22 | 2008-02-22 | Stationary blade position limiter of blast furnace blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200326311U CN201162699Y (en) | 2008-02-22 | 2008-02-22 | Stationary blade position limiter of blast furnace blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201162699Y true CN201162699Y (en) | 2008-12-10 |
Family
ID=40183637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200326311U Expired - Fee Related CN201162699Y (en) | 2008-02-22 | 2008-02-22 | Stationary blade position limiter of blast furnace blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201162699Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864087A (en) * | 2016-05-05 | 2016-08-17 | 沈阳鼓风机集团股份有限公司 | Fully automatic starting control method for high-speed centrifugal blower |
| CN111780316A (en) * | 2020-07-24 | 2020-10-16 | 康健 | Heating and ventilating device capable of purifying air |
-
2008
- 2008-02-22 CN CNU2008200326311U patent/CN201162699Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864087A (en) * | 2016-05-05 | 2016-08-17 | 沈阳鼓风机集团股份有限公司 | Fully automatic starting control method for high-speed centrifugal blower |
| CN111780316A (en) * | 2020-07-24 | 2020-10-16 | 康健 | Heating and ventilating device capable of purifying air |
| CN111780316B (en) * | 2020-07-24 | 2021-09-10 | 北京乾丰环境科技有限公司 | Heating and ventilating device capable of purifying air |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20160222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |