CN203007319U - RH vacuum chamber baking system - Google Patents
RH vacuum chamber baking system Download PDFInfo
- Publication number
- CN203007319U CN203007319U CN 201220679504 CN201220679504U CN203007319U CN 203007319 U CN203007319 U CN 203007319U CN 201220679504 CN201220679504 CN 201220679504 CN 201220679504 U CN201220679504 U CN 201220679504U CN 203007319 U CN203007319 U CN 203007319U
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- vacuum chamber
- baking
- waste gas
- gas casing
- heat box
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Abstract
The utility model discloses a RH vacuum chamber baking system, comprising a vacuum chamber baking device and a vacuum chamber, wherein a baking cover is arranged on the vacuum chamber baking device; the baking cover is configured together with the upper part of the vacuum chamber; a vacuum chamber inserting pipe is connected with a waste gas box; an exhaust port is arranged on the waste gas box; the exhaust port of the waste gas box is connected with an air mixing device through a control valve; and the air mixing device is connected with a waste gas pipeline. According to the RH vacuum chamber baking system, the aperture of the valve of the control valve is reduced in the process of drying the vacuum chamber by arranging the baking cover and the control valve; the standing time of baking hot air in the vacuum chamber is prolonged; heat loss is avoided to the maximal extent; the baking waste gas can be effectively controlled to heat the lower part of the vacuum chamber; even temperature of a refractory material inside the vacuum chamber is facilitated; the valve of the control valve is adjusted when the vacuum chamber is baked; the waste gas flow is controlled by suction formed by chimney effect of the waste gas pipeline; and the baking speed and the baking quality of the vacuum chamber are ensured.
Description
Technical field
The utility model relates to vacuum metallurgy field, particularly a kind of RH vacuum chamber baking system.
Background technology
In the last few years, along with the terminal user is more and more higher to the requirement of steel product quality, the ratio of molten steel vacuum refining was more and more higher.RH vacuum metling has good kinetic character, and metallurgical effect is outstanding, becomes basically universal in each large steel mill in recent years.
In prior art, the RH vacuum-treat is provided with processes position and standby position, and vacuum chamber carries out vacuum chamber handling and baking processing position production at standby position.The anti-material of RH vacuum chamber is after building by laying bricks or stones, and upper processing needs to utilize apparatus for baking to carry out drying and intensification before the position.Prior art utilizes baking gun to toast, can be by regulating the height of baking gun, the different sites of vacuum chamber is toasted, and make the anti-material temperature in vacuum chamber upper and lower consistent, but mechanism's relative complex, facility investment is high, and failure rate is high.When adopting roaster to toast, because the nozzle of roaster is fixed, be unfavorable for heating up in the bottom of vacuum chamber.Especially newly build vacuum chamber, heat-up rate can not be too fast in drying process, otherwise the moisture of anti-material can't separate out, and at this moment, baking waste gas is often overflowed from vacuum chamber top, makes the vacuum chamber bottom difficulty that heats up.During high bake, baking waste gas is directly discharged from the tubular stinger of vacuum chamber bottom, worsens site environment in addition, simultaneously also there is lasting thermal radiation in surrounding devices and steel structure etc.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of baking hot gas of effectively controlling to be heated up in the vacuum chamber bottom for above-mentioned the deficiencies in the prior art, promotes the uniform RH vacuum chamber of anti-material temperature baking system in vacuum chamber.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to be: a kind of RH vacuum chamber baking system, comprise vacuum chamber apparatus for baking and vacuum chamber, it is characterized in that being provided with on described vacuum chamber apparatus for baking the baking lid, shown in the top configuration of baking lid and vacuum chamber, the vacuum chamber tubular stinger is connected with waste heat box, be provided with venting port on waste heat box, the venting port of described waste heat box is connected with air mixing device by control valve, and described air mixing device is connected with exhaust pipeline.
By technique scheme, described waste heat box is fixed waste heat box, comprises fixed waste gas casing and cover plate, is respectively equipped with refractory lining in described fixed waste gas casing and cover plate, and fixed waste gas casing is by cover plate and vacuum chamber tubular stinger seal arrangement.
By technique scheme, described waste heat box comprises left and right waste gas casing and cover plate, when left and right waste gas casing links together, tubular stinger seal arrangement by cover plate and vacuum chamber, both sides at waste heat box are provided with guide rail, the both sides of left and right waste gas casing respectively with the guide rail phase configuration, the outside at two waste gas casings is respectively arranged with cylinder, the piston rod of two cylinders respectively with left waste gas casing, right waste gas casing phase configuration, be respectively used to promote left waste gas casing and right waste gas casing moves on guide rail.
By technique scheme, described waste heat box is included in the waste gas casing that a side has square aperture, movable flashboard and cover plate, described movable flashboard and waste gas casing bottom are hinged, the oblique below of the external side of described waste heat box disposes cylinder, the piston rod of this cylinder and the outside of movable flashboard are hinged, and the flexible opening end of waste gas casing and movable flashboard that makes by the control piston bar is merged into the waste gas casing, and the tubular stinger seal arrangement by cover plate and vacuum chamber.
By technique scheme, air mixing device comprises mixing wind tube, cold wind adjusting ring, along circumferential interval, square hole is set on described mixing wind tube, establish square hole along circumferential interval on described cold wind adjusting ring, described cold wind adjusting ring is sleeved on mixing wind tube, be provided with manual adjustment rod on the cold wind adjusting ring, the overlap ratio of regulating the square hole of the square hole of cold wind adjusting ring and mixing wind tube by the operation manual adjustment rod reaches the aperture of adjusting mixed air device.
By technique scheme, the waste heat box bottom is provided with slag pan.
By technique scheme, described control valve is butterfly valve, and described butterfly valve is the water-cooled butterfly valve, is provided with the liner of refractory materials in the inside of butterfly valve.
By technique scheme, be provided with thermopair on the sidewall of vacuum chamber refractory materials, described thermopair is used for the aperture of automatic feedback control valve.
By technique scheme, the vertical height of described exhaust pipeline is 10 meters-60 meters.
By technique scheme, be installed on thermometer on described exhaust pipeline, the indicating value of described thermometer is used for controlling the aperture of air mixing device.
By technique scheme, the baking lid of described vacuum chamber apparatus for baking and vacuum chamber seal arrangement.
The utility model with respect to the obtained beneficial effect of prior art is:
1, the utility model is by arranging baking lid and control valve, when dry and baking vacuum chamber, the adjusting control valve valve, utilize the draft of the chimneyeffect formation of exhaust pipeline, control exhaust gas flow, can effectively control baking waste gas and be heated up in the vacuum chamber bottom, promote that in vacuum chamber, anti-material temperature is even, thereby guarantee the baking quality of baking speed and vacuum chamber; In the process of dry vacuum chamber, reduce the aperture of control valve valve, extend the baking residence time of hot gas in vacuum chamber, avoid to greatest extent heat loss, save energy.
2, the utility model is provided with the tubular stinger phase configuration of waste heat box and the vacuum chamber of different structure, has satisfied vacuum chamber at standby position and has keeped in repair the position and wait the demand of carrying out drying or baking under the Different field operating mode.
3, the utility model has shortened drying and the storing time of vacuum chamber, has improved working efficiency, has also extended the work-ing life of vacuum chamber, plays simultaneously the effect of energy-saving and emission-reduction.
4, the utility model will toast waste gas and discharge by exhaust pipeline from vacuum chamber, effectively improve site environment.
Description of drawings
Fig. 1 is structure iron of the present utility model.
Fig. 2 is the structure iron of air mixing device.
Fig. 3 is the structure iron of cover plate.
Fig. 4 is the structure iron of the waste heat box of embodiment 2.
Fig. 5 is the front view of the waste heat box of embodiment 3.
Fig. 6 is that the A of Fig. 5 is to view.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment 1:
As shown in Figure 1, 2, a kind of RH vacuum chamber baking system, it comprises vacuum chamber apparatus for baking 1 and vacuum chamber 2, is provided with baking lid on vacuum bakeout device 1, shown in cover plate and vacuum chamber top seal configuration, escape for preventing from toasting on hot gas.The bottom of vacuum chamber tubular stinger and waste heat box 3 are tightly connected, the venting port that described waste heat box 3 is provided with, and the venting port of waste heat box 3 is connected with air mixing device 5 by control valve 4, and air mixing device 5 is connected with exhaust pipeline 6.
In this embodiment, waste heat box is fixed waste heat box, is divided into fixed waste gas casing and cover plate 7, is respectively equipped with refractory lining in described fixed waste gas casing and cover plate, and the structure iron of cover plate 7 as shown in Figure 3.This fixedly waste heat box selects to be arranged on place, maintenance position usually, by overhead traveling crane handling vacuum chamber to fixing waste heat box place, fixed waste gas casing is provided with slag pan by cover plate 7 and vacuum inserting tube seal arrangement in the bottom of waste heat box, is used for filtering the slag that falls down from vacuum chamber.
Described control valve 4 is the water-cooled butterfly valve, and the venting port of waste heat box is connected with water-cooled butterfly valve 4 by flange, because of too high from vacuum chamber spent air temperture out, the liner of refractory materials is installed to strengthen the work-ing life of butterfly valve in the inside of butterfly valve 4; The air outlet of butterfly valve connects air mixing device 5 by flange.
described air mixing device 5 is used for controlling the temperature of baking waste gas, air mixing device 5 comprises mixing wind tube 5.1, cold wind adjusting ring 5.2, along circumferential interval, square hole 5.5 is set on described mixing wind tube 5.1, the edge circumferentially is interval with square hole 5.6 on described cold wind adjusting ring 5.2, described cold wind adjusting ring 5.2 is sleeved on mixing wind tube 5.1, cold wind adjusting ring 5.2 can rotate on mixing wind tube 5.1, the two ends of cold wind adjusting ring 5.2 are provided with strongback 5.3, be provided with manual adjustment rod 5.4 on strongback 5.3, the square hole 5.6 of regulating cold wind adjusting ring 5.2 by operation manual adjustment rod 5.4 and the overlap ratio of the square hole 5.5 of mixing wind tube 5.1 reach the aperture of adjusting mixed air device.Wherein the gear of air mixing device 5 is 5 grades of adjustings.
The vertical discrepancy in elevation of described exhaust pipeline 6 is 45 meters, makes it form chimneyeffect.In order to control more easily the aperture of air mixing device 5, be installed on thermometer on exhaust pipeline 6.
In order further to improve the automatic control of RH vacuum chamber baking system, described butterfly valve 4 is electric butterfly valve, and the wall of the refractory materials in vacuum chamber is provided with thermopair, and thermopair is used for the aperture of the valve of automatic feedback butterfly valve 4.When dry vacuum chamber, reduce the aperture of butterfly valve valve 4, extend the baking residence time of hot gas in vacuum chamber, avoid to greatest extent heat loss; When vacuum chamber was carried out thermal pretreatment, the aperture of regulating butterfly valve 4 valves, utilized the draft of the chimneyeffect formation of exhaust pipeline automatically, regulates the baking exhaust mass by the gear of controlling air mixing device 5, guarantees baking speed and quality.
when need carry out drying to vacuum chamber, utilize the vacuum chamber handling that overhead traveling crane will newly puzzle extremely to keep in repair the position, gap between fixed waste heat box and vacuum chamber tubular stinger is covered tightly with cover plate 7, the position is extremely toasted in the baking lid rotation of vacuum chamber apparatus for baking, until eliminate in the gap between baking lid and vacuum chamber, make its seal arrangement, the aperture of butterfly valve 4 is set to close, the aperture of air mixing device 5 is set to close, vacuum chamber apparatus for baking 1 is heated up by selected drying curve, the baking waste gas that produces in bake process is rested in vacuum chamber further to be toasted vacuum chamber, until in vacuum chamber, the moisture of anti-the material is separated out, after this, set the initial opening 10% of butterfly valve 4, the initial opening of setting air mixing device 5 is second gear, and the vacuum chamber apparatus for baking is heated up by selected baking curve, at this moment, be arranged on the temperature that thermopair on the vacuum chamber sidewall detects the anti-material of vacuum chamber in real time, according to the variation of anti-material temperature, adjust the aperture of butterfly valve 4, according to thermometer indicating value on exhaust pipeline, adjust the aperture of air mixing device 5.
Embodiment 2:
As shown in Figure 4, embodiment 2 is basic identical with the structure of embodiment 1, and difference is the structure of waste heat box 3, does translation because the vacuum chassis can only make vacuum chamber, for applicable on-the-spot different operating mode, waste heat box 3 can be designed to movable waste heat box to satisfy the needs of different operating modes.Waste heat box 3 in this embodiment comprises left waste gas casing 8 and right waste gas casing 9, left and right waste gas casing is symmetrical set, when left and right waste gas casing links together and vacuum chamber tubular stinger phase configuration, be provided with guide rail 10 in the both sides of waste heat box, the both sides of left waste gas casing 8 and right waste gas casing 9 are equipped with guide deflection sheave and match with guide rail 10, left waste gas casing 8 and right waste gas casing 9 can be slided on guide rail 10, the piston rod 11 that is respectively arranged with 12, two cylinders 12 of cylinder in the outside of two waste gas casings is connected with right waste gas casing 9 with left waste gas casing 8 respectively.This movable waste heat box forms the vacuum chamber baking system, can be arranged on the maintenance position and also can be arranged on the standby position place, preferentially selects to be arranged on the standby position place.
When needs carry out thermal pretreatment to vacuum chamber, vacuum chamber 2 handlings to an enterprising step of the vacuum chassis that is in standby position of utilizing overhead traveling crane will be baked in the maintenance position assigned temperature toasts, and the contraction of the piston rod of two cylinders 12 at this moment makes left and right waste gas casing by cover plate 7 and vacuum chamber tubular stinger seal arrangement.The position is extremely toasted in the baking lid rotation of vacuum chamber apparatus for baking, until eliminate in the gap between baking lid and vacuum chamber, set the initial opening 10% of valve, the initial opening of setting air mixing device is second gear, and the vacuum chamber apparatus for baking is heated up by selected baking curve; At this moment, be arranged on the temperature that thermopair on the vacuum chamber sidewall detects the anti-material of vacuum chamber in real time, according to the variation of anti-material temperature, adjust the aperture of butterfly valve 4, according to thermometer indicating value on exhaust pipeline 6, adjust air mixing device 5 chassis vacuum chamber is opened to processing the position, begin to carry out refining treatment.
Embodiment 3:
As shown in Fig. 5,6, embodiment 3 is basic identical with the structure of embodiment 2, and difference is the structure of waste heat box.Described waste heat box is included in the waste gas casing 13 that a side has square aperture, movable flashboard 14 and cover plate 7, described movable flashboard 14 is hinged by U-shaped hinged block 15 with waste gas casing 13 bottoms, the oblique below in described waste gas casing 13 outsides disposes cylinder 17, the piston rod 16 of this cylinder is hinged with the outside of movable flashboard 14, flexible waste gas casing 13 and the opening end of movable flashboard 14 of making by control piston bar 16 is merged into the waste gas casing, and by the tubular stinger seal arrangement of cover plate 7 with vacuum chamber.The vacuum chamber baking system that this movable waste heat box forms can be arranged on the maintenance position and also can be arranged on the standby position place, preferentially selects to be arranged on the standby position place.When vacuum chassis handling vacuum chamber during to this waste heat box place, control piston bar 16 shrinks, make movable flashboard 14 to turning up, the vacuum chassis puts the vacuum chamber handling in place to vacuum inserting tube is contacted with waste gas casing 13, at this moment, control piston bar 16 stretches out, and movable flashboard 14 and the opening part of waste gas casing 13 are tightly connected, after vacuum chamber tubular stinger and the configuration of this box sealing, carry out thermal pretreatment.
Claims (11)
1. RH vacuum chamber baking system, comprise vacuum chamber apparatus for baking and vacuum chamber, it is characterized in that being provided with on described vacuum chamber apparatus for baking the baking lid, shown in the top configuration of baking lid and vacuum chamber, the vacuum chamber tubular stinger is connected with waste heat box, be provided with venting port on waste heat box, the venting port of described waste heat box is connected with air mixing device by control valve, and described air mixing device is connected with exhaust pipeline.
2. a kind of RH vacuum chamber baking system according to claim 1, it is characterized in that described waste heat box is fixed waste heat box, comprise fixed waste gas casing and cover plate, be respectively equipped with refractory lining in described fixed waste gas casing and cover plate, fixed waste gas casing is by cover plate and vacuum chamber tubular stinger seal arrangement.
3. a kind of RH vacuum chamber baking system according to claim 1, it is characterized in that described waste heat box comprises left and right waste gas casing and cover plate, when left and right waste gas casing links together, tubular stinger seal arrangement by cover plate and vacuum chamber, both sides at waste heat box are provided with guide rail, the both sides of left and right waste gas casing respectively with the guide rail phase configuration, the outside at two waste gas casings is respectively arranged with cylinder, the piston rod of two cylinders respectively with left waste gas casing, right waste gas casing phase configuration, be respectively used to promote left waste gas casing and right waste gas casing moves on guide rail.
4. a kind of RH vacuum chamber baking system according to claim 1, it is characterized in that described waste heat box is included in the waste gas casing that a side has square aperture, movable flashboard and cover plate, described movable flashboard and waste gas casing bottom are hinged, the oblique below of the external side of described waste heat box disposes cylinder, the piston rod of this cylinder and the outside of movable flashboard are hinged, the flexible opening end of waste gas casing and movable flashboard that makes by the control piston bar is merged into the waste gas casing, and the tubular stinger seal arrangement by cover plate and vacuum chamber.
5. according to claim 1 and 2 or 3 or 4 described a kind of RH vacuum chamber baking systems, it is characterized in that air mixing device comprises mixing wind tube, cold wind adjusting ring, the edge circumferentially is arranged at intervals with square hole on described mixing wind tube, the edge circumferentially is interval with square hole on described cold wind adjusting ring, described cold wind adjusting ring is sleeved on mixing wind tube, be provided with manual adjustment rod on the cold wind adjusting ring, the overlap ratio of regulating the square hole of the square hole of cold wind adjusting ring and mixing wind tube by the operation manual adjustment rod reaches the aperture of adjusting mixed air device.
6. according to claim 2 or 3 or 4 described a kind of RH vacuum chamber baking systems, is characterized in that being provided with slag pan bottom waste heat box.
7. a kind of RH vacuum chamber baking system according to claim 1, is characterized in that described control valve is butterfly valve, and described butterfly valve is the water-cooled butterfly valve, is provided with the liner of refractory materials in the inside of butterfly valve.
8. a kind of RH vacuum chamber baking system according to claim 1, is characterized in that being provided with thermopair on the sidewall of vacuum chamber refractory materials, and described thermopair is used for the aperture of automatic feedback control valve.
9. a kind of RH vacuum chamber baking system according to claim 1, the vertical height that it is characterized in that described exhaust pipeline is 10 meters-60 meters.
10. a kind of RH vacuum chamber baking system according to claim 1, is characterized in that being installed on thermometer on described exhaust pipeline, and the indicating value of described thermometer is used for controlling the aperture of air mixing device.
11. according to claim 1 and 2 or 3 or 4 described a kind of RH vacuum chamber baking systems is characterized in that baking lid and the vacuum chamber seal arrangement of described vacuum chamber apparatus for baking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220679504 CN203007319U (en) | 2012-12-11 | 2012-12-11 | RH vacuum chamber baking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220679504 CN203007319U (en) | 2012-12-11 | 2012-12-11 | RH vacuum chamber baking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203007319U true CN203007319U (en) | 2013-06-19 |
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ID=48598931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220679504 Expired - Lifetime CN203007319U (en) | 2012-12-11 | 2012-12-11 | RH vacuum chamber baking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203007319U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978344A (en) * | 2012-12-11 | 2013-03-20 | 中冶南方工程技术有限公司 | RH vacuum chamber baking system |
-
2012
- 2012-12-11 CN CN 201220679504 patent/CN203007319U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978344A (en) * | 2012-12-11 | 2013-03-20 | 中冶南方工程技术有限公司 | RH vacuum chamber baking system |
| CN102978344B (en) * | 2012-12-11 | 2014-04-09 | 中冶南方工程技术有限公司 | RH vacuum chamber baking system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |
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| CX01 | Expiry of patent term |