CN107726865A - A kind of quick online method for changing plate valve - Google Patents
A kind of quick online method for changing plate valve Download PDFInfo
- Publication number
- CN107726865A CN107726865A CN201710973287.XA CN201710973287A CN107726865A CN 107726865 A CN107726865 A CN 107726865A CN 201710973287 A CN201710973287 A CN 201710973287A CN 107726865 A CN107726865 A CN 107726865A
- Authority
- CN
- China
- Prior art keywords
- plate valve
- working chamber
- negative electrode
- valve
- changing plate
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
Abstract
The present invention discloses a kind of quick online method for changing plate valve; in normal productive process; need to change when negative electrode breaks down; when finding plate valve gas leakage simultaneously; after furnace chamber temperature is down to safe range; argon-filled protection is carried out to working chamber; the argon gas of working chamber is filled equal with atmospheric pressure to pressure; now change mounting plate type valve; working chamber is evacuated after installation; now furnace chamber and the space that rifle room is two independent closeds, can individually operate to rifle room, negative electrode is handled while changing plate valve.By multiple practice test, EB stoves can resume production in one hour.This method can fast and effectively handle plate valve leakage problem, and the environment in working chamber will not be influenced too much, and loss be fallen below minimum.
Description
Technical field
The invention belongs to EB stove vacuum melting technologies field, is related to a kind of quick online method for changing plate valve.
Background technology
In the production process of EB stoves, cathode block, wire in negative contact are consumable accessory, so in production process
Middle needs are according to circumstances irregular to be changed to it.And plate valve is isolation EB rifles and working chamber, when needs change the moon
During pole, plate valve need to only be closed, individually breaking sky to rifle room can change, but after plate valve sealing is damaged, it is right
Qiang Shipo space-times working chamber so be able to can also be oxidized the material in furnace chamber, can not be continuing with, cause damage by broken sky；And
And if furnace chamber contacted with oxygen after can cause to vacuumize slowly, it is necessary to preheat it is long, so as to delay the time of resuming production.
The content of the invention
, can when plate valve gas leakage it is an object of the invention to provide a kind of quick online method for changing plate valve
Quickly handled, and ensure that the material in furnace chamber is not oxidized, and avoid furnace chamber from directly being contacted with oxygen, so as to recover life as early as possible
Production.
The present invention is realized by following technical proposal：A kind of quick online method for changing plate valve, by following operation：
In normal productive process, when needing to change when negative electrode breaks down, while finding plate valve gas leakage, treat that furnace chamber temperature is down to
After safe range, argon-filled protection is carried out to working chamber, the argon gas of working chamber is filled equal with atmospheric pressure to pressure, so can
Avoid furnace chamber from being contacted with oxygen, now change mounting plate type valve, working chamber is evacuated after installation, now furnace chamber and rifle
Room is the space of two independent closeds, and individually rifle room can be operated, and handles negative electrode while changing plate valve, so also can
Save the regular hour.
Due to there is the protection of argon gas, the vacuum of working chamber can be extracted into the condition that can open rifle in ten minutes, after preheating
It can be resumed production within a hour；And if when the follow-up rifle needs to change again negative electrode, can because plate valve is air tight
Vacancy reason is individually broken to rifle room.
Beneficial effects of the present invention：By multiple practice test, when the plate valve of EB rifles in normal production cycles occurs
During gas leakage, argon-filled protection is carried out to working chamber, then plate valve is pulled down and handled, return dress after having handled, EB stoves can be one
Resumed production in hour.This method can fast and effectively handle plate valve leakage problem, and will not be to the environment in working chamber
Influence too much, loss is fallen below minimum.
Embodiment
With reference to embodiment, the present invention will be further described.
Embodiment 1
On May 14th, 2017, in warm 2# rifles negative electrode suddenly can not normal heating, through investigation be defined as asking for cathode block
Topic, needs to change；But 2# rifles, which break space-time, finds plate valve gas leakage, working chamber's vacuum also begins to, in being off brokenly sky, to molten
Refining room has carried out argon-filled protection, and plate valve is pulled down, then by smooth plates of one piece of area slightly larger than plate valve installation bore
Plate valve and the connector of working chamber are covered, is used as temporary sealing；During plate valve to be replaced, the flat board of temporary sealing is removed,
Dress plate valve is returned after changing sealing, while has handled negative electrode, working chamber's vacuum has just been extracted into the rifle condition that opens, preheating 50 for eight minutes
Melting has been begun to after minute.On May afterwards 19,2# rifles negative electrode failure again, it is this time wire failure, due to plate valve
It has been handled well that, so only needing individually empty post processing broken to rifle room, this time then half an hour is just disposed.
Claims (1)
- A kind of 1. quick online method for changing plate valve, it is characterised in that pass through following operation：In normal productive process, when needing to change when negative electrode breaks down, while finding plate valve gas leakage, treat that furnace chamber temperature is down to After safe range, argon-filled protection is carried out to working chamber, the argon gas of working chamber is filled equal with atmospheric pressure to pressure, now changed Mounting plate type valve, is evacuated after installation to working chamber, now furnace chamber and the space that rifle room is two independent closeds, can be single Solely rifle room is operated, negative electrode is handled while changing plate valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710973287.XA CN107726865A (en) | 2017-10-18 | 2017-10-18 | A kind of quick online method for changing plate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710973287.XA CN107726865A (en) | 2017-10-18 | 2017-10-18 | A kind of quick online method for changing plate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107726865A true CN107726865A (en) | 2018-02-23 |
Family
ID=61211966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710973287.XA Pending CN107726865A (en) | 2017-10-18 | 2017-10-18 | A kind of quick online method for changing plate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107726865A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201561656U (en) * | 2009-11-30 | 2010-08-25 | 宝钢工程技术集团有限公司 | Pulverized coal gun for smelting reduction furnace |
| CN102732684A (en) * | 2012-06-12 | 2012-10-17 | 河北钢铁股份有限公司邯郸分公司 | On-line rapid RH sealing airbag replacing method |
| CN202757431U (en) * | 2012-08-19 | 2013-02-27 | 合肥恒力电子装备公司 | On-line replaceable air-bag airtight door for atmosphere protection pusher kiln |
| CN104593536A (en) * | 2015-01-12 | 2015-05-06 | 山西太钢不锈钢股份有限公司 | Method for replacing hot air furnace blast furnace gas cut-off valve on line |
| CN205687874U (en) * | 2016-06-08 | 2016-11-16 | 葛巍 | A kind of online replacing gasifier nozzle unit equipment |
| CN106978198A (en) * | 2017-04-14 | 2017-07-25 | 宣化钢铁集团有限责任公司 | A kind of safety, the servicing unit of quick-replaceable coke dry quenching furnace water sealed tank and method |
-
2017
- 2017-10-18 CN CN201710973287.XA patent/CN107726865A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201561656U (en) * | 2009-11-30 | 2010-08-25 | 宝钢工程技术集团有限公司 | Pulverized coal gun for smelting reduction furnace |
| CN102732684A (en) * | 2012-06-12 | 2012-10-17 | 河北钢铁股份有限公司邯郸分公司 | On-line rapid RH sealing airbag replacing method |
| CN202757431U (en) * | 2012-08-19 | 2013-02-27 | 合肥恒力电子装备公司 | On-line replaceable air-bag airtight door for atmosphere protection pusher kiln |
| CN104593536A (en) * | 2015-01-12 | 2015-05-06 | 山西太钢不锈钢股份有限公司 | Method for replacing hot air furnace blast furnace gas cut-off valve on line |
| CN205687874U (en) * | 2016-06-08 | 2016-11-16 | 葛巍 | A kind of online replacing gasifier nozzle unit equipment |
| CN106978198A (en) * | 2017-04-14 | 2017-07-25 | 宣化钢铁集团有限责任公司 | A kind of safety, the servicing unit of quick-replaceable coke dry quenching furnace water sealed tank and method |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180223 |
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| WD01 | Invention patent application deemed withdrawn after publication |