CN104061364B - Two position three way directional control valve valve handle seals replacing options - Google Patents
Two position three way directional control valve valve handle seals replacing options Download PDFInfo
- Publication number
- CN104061364B CN104061364B CN201410279560.5A CN201410279560A CN104061364B CN 104061364 B CN104061364 B CN 104061364B CN 201410279560 A CN201410279560 A CN 201410279560A CN 104061364 B CN104061364 B CN 104061364B
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- China
- Prior art keywords
- valve
- valve handle
- coal
- coal gas
- gas side
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
- F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Lift Valve (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention discloses a kind of two position three way directional control valve valve handle and seal replacing options, including: when two position three-way valve needs to change valve handle sealing, close valve before coal gas side butterfly valve and mouth；Open coal smoke side butterfly valve, open coal smoke side cylinder or coal gas side cylinder, make coal smoke side valve handle or coal gas side valve handle be in upper, air-introduced machine forced draft, keep negative pressure in making two-position three way valve chamber；Pull down the plate by manhole cover of the maintenance on two position three-way valve, be continuing with air-introduced machine forced ventilation, reduce CO content in two-position three way valve chamber；Pull down and take out coal smoke side valve handle or coal gas side valve handle, change the coal smoke side valve handle damaged and seal or the sealing of coal gas side valve handle.The present invention can substantially increase overhaul efficiency, decreases outage rate.
Description
Technical field
The present invention relates to the service technique of a kind of two position three way directional control valve, specifically, relate to a kind of two three
Logical reversal valve valve handle seals replacing options.
Background technology
At present, two position three way directional control valve is one of main element of recuperative heater.And two-position three way changes
Sealing to valve valve handle is again one of a kind of valve components being easier to and damaging, and needs often to be replaced.Store
Hot type heating furnace is provided with 36 two position three way directional control valves, 18 air doors, 18 gas valves,
Each valve has two valve handles to seal." safety regulation for operations " strict regulations in gas operation region,
Maintenance to two position three way directional control valve, needs stifled blind plate；Heating furnace selects to use before and after two position three-way valve
To folder butterfly valve, need stifled blind plate when maintenance repair, take time and effort.When the sealing of two position three-way valve uses
Between general about half a year, if change sealing to be required for stifled blind plate every time, a lot of production time can be spent,
Reduce production operational availability, reduce product yield.
Method and the defect of changing the sealing of two position three-way valve valve handle are as follows:
First stifled supervisor's blind plate, recuperative heater cooling, nitrogen purging diffuses, and lasts about 2 hours；
Pipeline at butterfly valve is strutted with jack, stifled blind plate, lasts about 2 hours；To two position three way directional control valve valve
Handle seals and is replaced, and lasts about 2 hours；Blind plate at butterfly valve is removed, returns dress butterfly valve, last big
About 1 hour；Taking out main pipeline blind plate, heating furnace heats up, and lasts about 1 hour；Altogether last about 8
Hour.
Summary of the invention
Technical problem solved by the invention is to provide a kind of two position three way directional control valve valve handle and seals replacing side
Method, substantially increases overhaul efficiency, decreases outage rate.
Technical scheme is as follows:
A kind of two position three way directional control valve valve handle seals replacing options, including:
When two position three-way valve needs to change valve handle sealing, close valve before coal gas side butterfly valve and mouth；
Open coal smoke side butterfly valve, open coal smoke side cylinder or coal gas side cylinder, make coal smoke side valve handle or
Coal gas side valve handle is in upper, air-introduced machine forced draft, keeps negative pressure in making two-position three way valve chamber；
Pull down on two position three-way valve maintenance plate by manhole cover, be continuing with air-introduced machine forced ventilation, fall
CO content in low two-position three way valve chamber；
Pull down and take out coal smoke side valve handle or coal gas side valve handle, change the coal smoke side valve handle damaged seal or
Person's coal gas side valve handle seals.
Further: also to include the maintenance plate by manhole cover loading onto the coal gas side pulled down or coal smoke side, open
Valve before coal gas side butterfly valve and mouth, recovers the step of the duty of two position three-way valve.
Further: when needs change the sealing of coal smoke side valve handle or coal smoke side valve handle, to open coal smoke side gas
Cylinder makes coal smoke side valve handle be in upper；When coal gas side valve handle changed by needs or coal gas side valve handle seals,
Opening coal gas side cylinder makes coal gas side valve handle be in upper.
Further: when needs change the sealing of coal smoke side valve handle or coal smoke side valve handle, to pull down two-position three way
The maintenance plate by manhole cover of the coal smoke side on valve；When needs replacing coal gas side valve handle or coal gas side valve handle are close
Feng Shi, pulls down the maintenance plate by manhole cover of coal gas side on two position three-way valve.
Further: to open and overhaul plate by manhole cover, carry out safety detection with CO portable detector, really
Determine in valve pocket air draught and for after negative pressure, proceed to change operation.
Compared with prior art, the technology of the present invention effect includes:
1, the use of the technology of the present invention, economic benefits.Each two position three-way valve just needs for every six months
Once overhauling, maintenance saves 5 hours every time, can produce about 100T wire rod per hour, often
Ton wire rod can create benefit 200 yuan, and within 1 year, can create benefit is 5 × 100 × 200 × 36 × 2=,720 ten thousand
Unit.
2, invention utilizes the operation principle of equipment to improve, and substantially increases overhaul efficiency, decreases and stop
Probability.In order to save the energy, original power consumption heating furnace reformation is become to save energy by each factories and miness that produce step by step
The recuperative heater in source.This time Manipulative improvement, provides for other factories and miness having recuperative heater
Experience and method.
Accompanying drawing explanation
Fig. 1 is the operation principle schematic diagram of heating furnace two position three-way valve in the present invention.
Detailed description of the invention
The present invention changes nitrogen purging in prior art and diffuses, blocks up the operations such as blind plate, utilizes existing equipment
Achieve reversal valve valve handle to seal, thus improve upkeep operation efficiency.
Below with reference to the accompanying drawings and preferred embodiment, technical solution of the present invention is elaborated.
As it is shown in figure 1, be the operation principle schematic diagram of heating furnace two position three-way valve in the present invention.
Coal smoke pipeline 13 connects air-introduced machine, and coal gas side ducts 23 connects gas piping.Coal gas side coal gas supplies
Atmospheric pressure is 6000～10000KPa, and coal smoke is taken away by coal smoke side air-introduced machine.
The course of work of two position three-way valve: under duty, coal gas side cylinder 21 is in upper, coal gas side
Butterfly valve 22 is opened, and coal gas side valve handle 24 is opened, and coal gas side valve handle sealing 25 is in opens, coal smoke side gas
Cylinder 11 is in bottom, coal smoke side valve handle 14 and coal smoke side valve handle and seals 15 closedowns；Coal gas is through coal gas side butterfly
Valve 22 enters valve body, enters heating furnace by valve before mouth 3.After one minute, first by coal gas side cylinder 21
It is in bottom, coal gas side valve handle 24 and coal gas side valve handle and seals 25 closedowns, then by coal smoke side cylinder 11
Being in upper, coal smoke side valve handle 14 is opened, and coal smoke side valve handle seals 15 unlatchings, is produced by heating furnace
Coal smoke is extracted out through air-introduced machine by heat storage, burner, reversal valve, coal smoke pipeline 13.
Need maintenance when two position three-way valve a period of time that works and change coal smoke side valve handle and seal 15 or coal
Gas side valve handle seals 25, and two position three way directional control valve valve handle seals replacing options and specifically comprises the following steps that
Step 1: close valve 3 before coal gas side butterfly valve 22 and mouth；
Step 2: open coal smoke side butterfly valve 12, opens coal smoke side cylinder 11 (or coal gas side cylinder 21),
Make coal smoke side valve handle 14 (or coal gas side valve handle 24) be in upper, open coal smoke side valve handle and seal 15
(or coal gas side valve handle seals 25), air-introduced machine forced draft, keep negative in making two-position three way valve chamber
Pressure；
When needs change coal smoke side valve handle sealing 15 or coal smoke side valve handle 14, open coal smoke side cylinder
11 to make coal smoke side valve handle 14 be in upper；When needs replacing coal gas side valve handle 24 or coal gas side valve handle are close
When sealing 25, it is upper that unlatching coal gas side cylinder 21 makes coal gas side valve handle 24 be in.
Step 3: pull down the maintenance plate by manhole cover of coal gas side (or coal smoke side) on two position three-way valve,
It is continuing with air-introduced machine forced ventilation, reduces CO content in two-position three way valve chamber, make CO content low
In setting 50ppm, to reduce the extent of injury to human body；
Further, open and overhaul plate CO portable detector by manhole cover and carry out safety detection, determine
Air draught after being negative pressure in valve pocket, can proceed to change operation.When needs replacing coal smoke side valve handle is close
Envelope 15 or during coal smoke side valve handle 14, pulls down the maintenance plate by manhole cover of coal smoke side on two position three-way valve；
When coal gas side valve handle 24 changed by needs or coal gas side valve handle seals 25, pull down on two position three-way valve
The maintenance of coal gas side plate by manhole cover.
Step 4: pull down and take out coal smoke side valve handle 14 or coal gas side valve handle 24, changes the valve handle damaged
Seal (coal smoke side valve handle sealing 15 or coal gas side valve handle seal 25).
Step 5: finally load onto the maintenance plate by manhole cover of the coal gas side (or coal smoke side) pulled down, beat
Valve 3 before turn on the gas side butterfly valve 22 and mouth, recovers the duty of two position three-way valve.
Said process lasts about 3 hours.
Claims (4)
1. two position three way directional control valve valve handle seals a replacing options, including:
When two position three-way valve needs to change valve handle sealing, close valve before coal gas side butterfly valve and mouth；
Open coal smoke side butterfly valve, open coal smoke side cylinder or coal gas side cylinder, make coal smoke side valve handle or
Coal gas side valve handle is in upper, air-introduced machine forced draft, keeps negative pressure in making two-position three way valve chamber；
Pull down the plate by manhole cover of the maintenance on two position three-way valve, be continuing with air-introduced machine forced ventilation, reduce
CO content in two-position three way valve chamber；
Pull down and take out coal smoke side valve handle or coal gas side valve handle, change the coal smoke side valve handle damaged seal or
Person's coal gas side valve handle seals；
Loading onto the maintenance plate by manhole cover of the coal gas side pulled down or coal smoke side, turn on the gas-fire side butterfly valve and mouth
Front valve, recovers the duty of two position three-way valve.
2. two position three way directional control valve valve handle seals replacing options as claimed in claim 1, it is characterised in that:
When needs change the sealing of coal smoke side valve handle or coal smoke side valve handle, open coal smoke side cylinder and make coal smoke side valve
Handle is in upper；When coal gas side valve handle changed by needs or coal gas side valve handle seals, open coal gas side gas
Cylinder makes coal gas side valve handle be in upper.
3. two position three way directional control valve valve handle seals replacing options as claimed in claim 2, it is characterised in that:
When needs change the sealing of coal smoke side valve handle or coal smoke side valve handle, pull down the coal smoke side on two position three-way valve
Maintenance plate by manhole cover；When coal gas side valve handle changed by needs or coal gas side valve handle seals, pull down two
The maintenance plate by manhole cover of the coal gas side on position three-way valve.
4. two position three way directional control valve valve handle seals replacing options as claimed in claim 2, it is characterised in that:
Open and overhaul plate by manhole cover, carry out safety detection with CO portable detector, determine air draught in valve pocket
And after being negative pressure, proceed to change operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410279560.5A CN104061364B (en) | 2014-06-20 | 2014-06-20 | Two position three way directional control valve valve handle seals replacing options |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410279560.5A CN104061364B (en) | 2014-06-20 | 2014-06-20 | Two position three way directional control valve valve handle seals replacing options |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104061364A CN104061364A (en) | 2014-09-24 |
| CN104061364B true CN104061364B (en) | 2016-09-07 |
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ID=51549222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410279560.5A Active CN104061364B (en) | 2014-06-20 | 2014-06-20 | Two position three way directional control valve valve handle seals replacing options |
Country Status (1)
| Country | Link |
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| CN (1) | CN104061364B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW359743B (en) * | 1997-01-06 | 1999-06-01 | Nippon Furnace Kogyo Kk | Apparatus and method for heating a gaseous fluid flow, method for preheating a gaseous fluid flow |
| CN2880832Y (en) * | 2006-03-07 | 2007-03-21 | 韩东风 | High efficient energy-saving thermal storage pipe type heating stove |
| CN201306476Y (en) * | 2008-12-16 | 2009-09-09 | 中冶南方(武汉)威仕工业炉有限公司 | 2-position 3-way air reversing valve |
| CN102645107A (en) * | 2012-05-07 | 2012-08-22 | 北京亿玮坤节能科技有限公司 | Coal gas recycling device of double preheating heat accumulating type heating furnace |
| CN203024157U (en) * | 2012-12-18 | 2013-06-26 | 史亮 | Low oxygen regenerative burner |
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2014
- 2014-06-20 CN CN201410279560.5A patent/CN104061364B/en active Active
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| Publication number | Publication date |
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| CN104061364A (en) | 2014-09-24 |
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