CN204874566U - Device is changed to blast furnace hot -blast valve - Google Patents
Device is changed to blast furnace hot -blast valve Download PDFInfo
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- CN204874566U CN204874566U CN201520555671.4U CN201520555671U CN204874566U CN 204874566 U CN204874566 U CN 204874566U CN 201520555671 U CN201520555671 U CN 201520555671U CN 204874566 U CN204874566 U CN 204874566U
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- section steel
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- blast
- valve
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Abstract
The utility model discloses a device is changed to blast furnace hot -blast valve, including main platform, hot -blast valve, first channel -section steel, second channel -section steel. First channel -section steel is laid in one side cavity position of two adjacent hot -blast valves department, and just the girder with main platform forms V type constant head tank. Be provided with new, old hot -blast valve disk seat on the first channel -section steel perpendicularly, the second channel -section steel is laid in the opposite side cavity position of two adjacent hot -blast valves department, and the welding is on the main platform girder. Place new, old hot -blast valve valve gap on the second channel -section steel, newly, old 19 flanges of hot -blast valve valve gap branch aspect place on the second channel -section steel, and the valve plate passes first channel -section steel and second channel -section steel, interim passageway is laid with the second channel -section steel to first channel -section steel. Seted up a round hole on main platform's the pavement steel sheet, the transmission frame is placed on main platform perpendicularly through this round hole. The utility model discloses a hot -blast valve is realized changing with the NULL lifting device who suspends in midair by the preformed hole on former platform, the change time is short, improves economic benefits.
Description
Technical field
The utility model relates to metal smelting field, is specifically related to a kind of blast-furnace hot-air valve replacement device.
Background technology
Iron Works and hot blast valve reach a few year from blow-on continuous service.Long continuous service is not changed and valve inner can be caused to have obvious drainage, and the mode of generally overhauling it carries out perforate soldering process, but be effective not yet to the process that valve body leaks.In actual production, equipment requirements adheres to running always, but production affects to blast furnace normal running.Therefore, changing Hot-blast valve is the basic of head it off.
In actual replacing valve process, serviceman lacks relevant replacing experience, and valve self also overweight, superelevation, it is non-Ground Operation, hoisting difficulty is quite large, if use crane, at least need the crane of a more than 150T to work continuously more than two machine-teams, crane cost is expensive.And valve takes rear in situ temperature very high (it locates hot-blast main, and normal in pipeline, temperature is higher than 1300 DEG C when producing, and damping down gets off and also have about 700-800 DEG C after cooling), operating environment very severe apart.
Summary of the invention
In view of this, the application provides a kind of blast-furnace hot-air valve replacement device, by this more changing device thoroughly solve the replacing of hot blast valve, and be easy to safeguard, replacing construction is short, adds economic benefit.
For solving above technical problem, the technical scheme that the utility model provides is a kind of blast-furnace hot-air valve replacement device, comprises main platform, hot blast valve,
The first channel-section steel is laid at the empty cavity position place, side of adjacent two hot blast valves, and the girder of described first channel-section steel and described main platform forms V-type locating slot; Described first channel-section steel is vertically installed with new, old hot blast valve valve seat;
The second channel-section steel is laid at the opposite side empty cavity position place of adjacent two hot blast valves, and described second channel-section steel is welded on described main platform girder; New, old hot air valve cover placed by described second channel-section steel; Described new, an old hot air valve cover point aspect flange is positioned on described second channel-section steel, and valve plate is through described first channel-section steel and described second channel-section steel; Interim passageway laid by described first channel-section steel and described second channel-section steel;
The aisle steel plate of described main platform offers a circular hole, and driving frame is vertically placed on described main platform by described circular hole.
Further, the 20# channel-section steel of described first channel-section steel to be length be 4-6m, and be 1-1.2m with the spacing of described main platform girder, make the vertical hot blast valve valve seat placed on it be easy to vertical lifting.
Further, the 20# channel-section steel of described second channel-section steel to be length be 6-8m.
Further, the distance of described first channel-section steel and described second channel-section steel is 380-420mm.
Further, the distance of described first channel-section steel and described second channel-section steel is 400mm, is convenient to above new, an old hot air valve cover point aspect flange can be positioned over.
Further, described main platform girder at least arranges 2 suspension centres, be convenient to lifting.
Further, the hot blast short pipe at described hot blast valve two ends being arranged the bearing of screw block, backing down the short tube on hot blast valve end flanges both sides for installing screw block, reserve lifting gap.
Further, the diameter of described circular hole is identical with the diameter of hot blast valve transmission oil cylinder, so that driving frame can vertically be positioned on platform after hanging.
The beneficial effects of the utility model are: the utility model, on original hot blast valve platform, newly establishes channel-section steel, and new, old hot blast valve seat and new, old hot air valve cover realize changing hot blast valve on original platform in conjunction with hanging device.The utility model structure is simple, easy for installation, reliable and stable; Stage+module adopts pre-opened hole and suspends the method combined in midair, has reasonable in design, safe and reliable feature.The utility model changes hot blast valve does not need whole platform field-strip, only needs to implement in original platform upper part, and replacing construction is short, increases economic efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the utility model hot air valve body structural representation.
Embodiment
In order to make those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
See Fig. 1, Fig. 2, described by the utility model embodiment is a kind of blast-furnace hot-air valve replacement device, this more changing device on original hot blast valve platform, newly establish channel-section steel, newly, old hot blast valve seat and new, old hot air valve cover, by this more changing device realize changing hot blast valve on original platform in conjunction with hanging device.
Described blast-furnace hot-air valve replacement device, comprises main platform 1, hot blast valve, in the present embodiment, is provided with 3 hot blast valves, is 1# hot blast valve 2,2# hot blast valve 3,3# hot blast valve 6, first channel-section steel 4, second channel-section steel 5 respectively.
Between 1# hot blast valve 2 and 2# hot blast valve 3, first channel-section steel 4 of about 5 meters is laid at the empty cavity position place of side, and with the main platform girder of main platform girder parallel distance 1.2 meters.New, the old hot blast valve valve seat 12 of vertical placement on first channel-section steel 4.Because hot blast valve end flanges dish diameter is 2.6 meters, the first channel-section steel 4 forms V-type locating slot with main platform girder, and hot blast valve valve seat 12 is vertically placed on the first channel-section steel 4, so that follow-up vertical lifting.
Between 1# hot blast valve 2 and 2# hot blast valve 3, second channel-section steel 5 of about 7 meters is laid at the empty cavity position place of opposite side, and the second channel-section steel 5 is welded on the girder at main platform two ends.New, old hot air valve cover 13 placed by second channel-section steel 5.The spacing that second channel-section steel 5 and the first channel-section steel 4 are arranged is 400 meters so that newly, old hot air valve cover 13 points of aspect 19 flanges are positioned on the second channel-section steel 5, and valve plate 15 is through the first channel-section steel 4 and the second channel-section steel 5.The hot blast short pipe at 1# hot blast valve 2 and 2# hot blast valve 3 two ends being arranged the bearing of screw block, backing down the short tube on hot blast valve end flanges both sides for installing screw block, reserve lifting gap.First channel-section steel 4 and the second channel-section steel 5 are 20# channel-section steel, and lay interim passageway therebetween.
Driving frame 18 on the aisle steel plate 11 of main platform 1, is as the criterion with the diameter of hot blast valve transmission oil cylinder 17, cuts off circular hole 14, so that can vertically be positioned on platform after hanging.Main platform girder is at least arranged 2 suspension centres, be convenient to lifting.
Experimental group 1-adopt more changing device described in the utility model to change hot blast valve
The more changing device described in the present embodiment is adopted to change hot blast valve concrete operation step as follows:
First, perform the preparation work before maintenance, comprise setting up of more changing device, the preparation of Work tool, new hot blast valve to be replaced prepares scene, and operating personnel puts in place in advance.After the complete damping down of blast furnace, close hot blast valve, and remove all cooling water pipelines on hot blast valve, and overlap interim waterpipe on the original warter connection of valve body, prevent from valve body from cutting off the water supply for a long time causing steam to spray outward hurting sb.'s feelings.Then, removing hot blast valve divides aspect 19 remaining joint bolt, and with 16T electric block 16 oblique lifting hot blast valve upper valve cap 13, (electric block dolly stroke is limited, vertical lifting cannot be accomplished), and on the shear shank of hotblast stove furnace wall, hang a 10T chain block at hot blast short pipe and make lateral traction, operate electric block and chain block simultaneously, slowly lift by crane, estimate 2 hours used times.After top valve plate 15 departs from valve seat completely, unclamp 10T chain block, continue operation 16T electric block and winched on the more changing device set up in advance, place, estimate 1 hour used time.Remove old hot blast valve end flanges and the remaining joint bolt of hot blast short pipe flange, back down the short tube on end flanges both sides with two 50T screw block in the position of welding before simultaneously, reserve lifting gap, the mode that same use 16T electric block 16 and 10T chain block coordinate, slow lifting, and on the more changing device set up before winching to, estimate 3 hours used times.Sweep hot blast short pipe flange sealing surface, do the lifting of new valve and prepare.Finally, by first go out laggard, after go out advanced order, when removing each parts before employing, 16T electric block coordinates the mode of 10T chain block, new valve base, valve gap, driving frame are installed successively, and added the gasket of each position, fastening bolt, estimate 8 hours used times.
Experimental group 2-adopt existing maintenance means to change hot blast valve
Serviceman's employing is first removed old hot blast valve and is then adopted hanging method to implement to change to it.Change hot blast valve hoisting difficulty quite large, if use crane, at least need the crane of a more than 150T to work continuously more than two machine-teams, crane cost is expensive, estimates 16 hours used times.
From experimental group 1, experimental group 2: use a large-scale crane of 150T at present, and 16 hours used times, valve body assembly replacing construction is 60 hours.The actual replacing construction of the utility model is 21 hours and does not use crane.A blast furnace produces 4500 tons daily, therefore, 4500 tons/24 hours=187.5 tons of/hour * (60-21) hour=7312.5 tons, produce one ton of iron loss 150 yuan/ton less, so, create direct benefit 7312.5 tons * 150 yuan/ton=1096875 yuan+40000 yuan (crane cost)=113.6875 ten thousand yuan.In addition, long-time damping down is unfavorable for that conditions of blast furnace recovers, and the impact indirectly caused is difficult to estimate especially.
Below be only preferred implementation of the present utility model, it should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, protection domain of the present utility model should be as the criterion with claim limited range.For those skilled in the art, not departing from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. a blast-furnace hot-air valve replacement device, comprises main platform, hot blast valve, it is characterized in that,
The first channel-section steel is laid at the empty cavity position place, side of adjacent two hot blast valves, and the girder of described first channel-section steel and described main platform forms V-type locating slot; Described first channel-section steel is vertically installed with new, old hot blast valve valve seat;
The second channel-section steel is laid at the opposite side empty cavity position place of adjacent two hot blast valves, and described second channel-section steel is welded on described main platform girder; New, old hot air valve cover placed by described second channel-section steel; Described new, an old hot air valve cover point aspect flange is positioned on described second channel-section steel, and valve plate is through described first channel-section steel and described second channel-section steel; Interim passageway laid by described first channel-section steel and described second channel-section steel;
The aisle steel plate of described main platform offers a circular hole, and driving frame is vertically placed on described main platform by described circular hole.
2. blast-furnace hot-air valve replacement device according to claim 1, is characterized in that, the 20# channel-section steel of described first channel-section steel to be length be 4-6m, and is 1-1.2m with the spacing of described main platform girder.
3. blast-furnace hot-air valve replacement device according to claim 1, is characterized in that, the 20# channel-section steel of described second channel-section steel to be length be 6-8m.
4. blast-furnace hot-air valve replacement device according to claim 1, is characterized in that, the distance of described first channel-section steel and described second channel-section steel is 380-420mm.
5. blast-furnace hot-air valve replacement device according to claim 1, is characterized in that, described main platform girder at least arranges 2 suspension centres.
6. blast-furnace hot-air valve replacement device according to claim 1, is characterized in that, the hot blast short pipe at described hot blast valve two ends is arranged the bearing of screw block.
7. blast-furnace hot-air valve replacement device according to claim 1, is characterized in that, the diameter of described circular hole is identical with the diameter of hot blast valve transmission oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520555671.4U CN204874566U (en) | 2015-07-28 | 2015-07-28 | Device is changed to blast furnace hot -blast valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520555671.4U CN204874566U (en) | 2015-07-28 | 2015-07-28 | Device is changed to blast furnace hot -blast valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204874566U true CN204874566U (en) | 2015-12-16 |
Family
ID=54818962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520555671.4U Withdrawn - After Issue CN204874566U (en) | 2015-07-28 | 2015-07-28 | Device is changed to blast furnace hot -blast valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204874566U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104946835A (en) * | 2015-07-28 | 2015-09-30 | 四川省达州钢铁集团有限责任公司 | Blast furnace hot-blast valve maintenance platform |
| CN110512042A (en) * | 2018-05-21 | 2019-11-29 | 中冶宝钢技术服务有限公司 | A kind of replacing options of hot-blast valve and its flange gasket |
-
2015
- 2015-07-28 CN CN201520555671.4U patent/CN204874566U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104946835A (en) * | 2015-07-28 | 2015-09-30 | 四川省达州钢铁集团有限责任公司 | Blast furnace hot-blast valve maintenance platform |
| CN110512042A (en) * | 2018-05-21 | 2019-11-29 | 中冶宝钢技术服务有限公司 | A kind of replacing options of hot-blast valve and its flange gasket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151216 Effective date of abandoning: 20170517 |
|
| AV01 | Patent right actively abandoned |