CN110280966A - The restorative procedure in the working seal outer ring alloy face of the main inlet valve of hydroenergy storage station - Google Patents
The restorative procedure in the working seal outer ring alloy face of the main inlet valve of hydroenergy storage station Download PDFInfo
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- CN110280966A CN110280966A CN201910288120.9A CN201910288120A CN110280966A CN 110280966 A CN110280966 A CN 110280966A CN 201910288120 A CN201910288120 A CN 201910288120A CN 110280966 A CN110280966 A CN 110280966A
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- outer ring
- welding
- working seal
- built
- inlet valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
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- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of restorative procedures in the working seal outer ring alloy face of the main inlet valve of hydroenergy storage station, include the following steps: for outer ring to be put on vertical lathe, make the big end of outer ring downward, withSeam allowance is corrected on the basis of small Flange Plane, symmetrical school circle, pad pressure stabilizing jail；Check the Flange Plane of big end of outer ring, small Flange Plane andSeam allowance bounce, confirmation outer ring is horizontal, measurementSeam allowance diameter dimension, record data and mark position；Turning is carried out to the aluminium alloy region of outer ring, unilateral Lathe quantity is 0.2mm.The present invention has the problem more than the current main inlet valve working seal outer ring aluminium alloy face scratch of elimination, solves the characteristics of working seal seepy question.
Description
Technical field
The present invention relates to the main inlet valve technical field of sealing technology of pump-up power station, can effectively ensure that work is close more particularly, to one kind
Envelope is long-term to throw the restorative procedure for moving back the working seal outer ring alloy face of the main inlet valve of watertight hydroenergy storage station.
Background technique
Ball valve working seal is derived from ball valve body operating pressure water with water, and pressure is diversion steel pipe pressure, through pass filter mistake
Working seal is introduced after filter puts into chamber.Unit working seal investment chamber cut-in pressure water when shutting down puts into working seal.Machine
In booting, ball valve working seal puts into water and disconnects group, and investment chamber runs in water lines.Working seal directly passes through ball valve body side
Water pressure exits working seal.
Ball valve working seal is made of together outer ring, rotating ring and external bushing, after closing for valve body valve, in valve body and is stretched
Reliably leak-stopping between casing coupling.
Combination sealing on rotating ring is 3 groups, and every group of sealing consists of two parts, and outside is polyethers polyurethane and enhanced poly-
The gland of tetrafluoroethene material, inside are the nitrile rubber O-ring seal of Φ 16.
Outer ring and external bushing rubbing surface are coated with the smaller aluminium bronze of hardness, to protect the three seals of rotating ring to be unlikely to
It is quickly worn.
Pump-up power station Unit Commitment is frequent, due to all containing impurity in working seal investment water, ball valve lateral pressure water, in work
Make sealing and throws impurity when moving back as friction leads to the alloy-layer and rotating ring of outer ring to the combination sealing of rotating ring back and forth on alloy face
There is damage scratch in gland, eventually leads to working seal investment chamber and exits chamber channeling water, there are working seals not to wait peace sternly
Full problem.
Summary of the invention
Goal of the invention of the invention is provided to overcome the shortcomings of that ball valve working seal in the prior art is easy leak
A kind of restorative procedure in the working seal outer ring alloy face of the main inlet valve of hydroenergy storage station.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of restorative procedure in the working seal outer ring alloy face of the main inlet valve of hydroenergy storage station, characterized in that including
Following steps:
Outer ring is put on vertical lathe by (1-1), makes the big end of outer ring downward, withSeam allowance is flat with small flange
It is corrected on the basis of face, symmetrical school circle, pad pressure stabilizing jail；
(1-2) check the Flange Plane of big end of outer ring, small Flange Plane andSeam allowance bounce, confirms outer ring water
It is flat, measurementSeam allowance diameter dimension, record data and mark position；
(1-3) carries out turning to the aluminium alloy region of outer ring, and unilateral Lathe quantity is 0.2mm；
(1-4) measures the diameter dimension after turning, and makes a record, and local pit eliminates defect using polishing mode, really
Protect the metallic luster for exposing basic material；
(1-5) built-up welding:
The objectionable impurities such as built-up welding region and oil, water, vapour within the scope of the 30mm of periphery are removed before built-up welding；Built-up welding region is outer ring
A, part B, using CO 2 gas-shielded carry out built-up welding；
(1-6) carries out vehicle pin, unilateral half smart car of the 0.2mm more than design size to the paving welding zone domain of outer ring；
(1-7) flaw detection:
By the JB/T6062-2007II grades of half smart car regions PT, if there is no problem, continue processing in place；If you have questions, then digging
Built-up welding；Built-up welding region does not allow to provide PT flaw detection report after qualified there are face crack and biggish incomplete fusion defect；
(1-8) smart car: smart car, roughness 1.6 are carried out to the A of outer ring, part B according to drawing requirement；15 ° of inclined-planes, it is coarse
Degree 6.3；
(1-9) deburring, clears up the surface of outer ring；
(1-10) complete detection machining dimension, and make a record；
(1-11) antirust: applying antirust oil at the machining of outer ring, factory is protected.
Outer ring alloy surface material needs smaller than gland hardness in the prior art, with guarantee gland be unlikely to by
Fast Wearing, the gland part hardness of working seal rotating ring combination sealing are Shao's formula HS=A80 degree, the outer ring contacted therewith
Aluminium bronze hardness is HBS=100HB, and the hardness in alloy face is smaller than gland (HS=HBS/10+12.5).Therefore,
The gland of rotating ring is run back and forth in weak tendency in friction, impaired first to form scratch, later since water flow is constantly washed away, into
One step expands scratch, formed through and through wound after result in leak, later with regard to vicious circle, leak further aggravate scratch by
Damage.
The present invention removes entire outer ring aluminium bronze face, and using hardness instead is 45 degree of Rockwell hardness or so
For HO3Cr19Ni12MO2Si stainless steel material as coating, hardness is bigger than aluminium bronze, while than the polyethers polyamine of shore A80 degree
Rouge and enhanced polytetrafluoroethylene are smaller, can satisfy design requirement protection gland simultaneously and friction is avoided to cause outer ring close
Cover is impaired.
Preferably, the resurfacing welding material in step (1-5) is HO3Cr19Ni12MO2Si stainless steel.
Preferably, the welding pre-heating temperature in step (1-5) is 100 DEG C -150 DEG C, interlayer temperature control in welding process
System is not more than 150 DEG C；Welding current is 120A-135A；Speed of welding is 0.5m/min；Gas flow is 15-25L/min；Heap
It is soldered into workpiece natural cooling to be added, discharges stress.
Therefore, the invention has the following beneficial effects: eliminate current main inlet valve working seal outer ring aluminium alloy face scratch
More problems solves working seal seepy question, meet the main inlet valve working seal of pump-up power station frequently throw sealed when moving back it is good
Good strict demand.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of outer ring of the invention；
Fig. 2 is a kind of partial cross-section structural schematic diagram of outer ring of the invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment as shown in Figure 1 and Figure 2 is a kind of working seal outer ring alloy face of main inlet valve of hydroenergy storage station
Restorative procedure, outer ring include first annular circle 1, the second annular ring 2, the annular between first annular circle and the second annular ring
Connecting plate 3, annular connecting plate is in cone；Diameter of the diameter of first annular circle less than the second annular ring, the second annular ring packet
Include annulus 21 of the cross section in rectangle and the annular convex platform 22 on the inward flange of annulus upper surface；Include the following steps:
Outer ring is put on vertical lathe by (1-1), makes the big end of outer ring downward, withSeam allowance is flat with small flange
It is corrected on the basis of face, symmetrical school circle, pad pressure stabilizing jail；
(1-2) check the Flange Plane of big end of outer ring, small Flange Plane andSeam allowance bounce, confirms outer ring water
It is flat, measurementSeam allowance diameter dimension, record data and mark position；
(1-3) carries out turning to the aluminium alloy region of outer ring, and unilateral Lathe quantity is 0.2mm；
(1-4) measures the diameter dimension after turning, and makes a record, and local pit eliminates defect using polishing mode, really
Protect the metallic luster for exposing basic material；
(1-5) built-up welding:
The objectionable impurities such as built-up welding region and oil, water, vapour within the scope of the 30mm of periphery are removed before built-up welding；Built-up welding region is outer ring
Annulus upper surface and annular convex platform upper surface, using CO 2 gas-shielded carry out built-up welding；Resurfacing welding material is
HO3Cr19Ni12MO2Si stainless steel；Welding pre-heating temperature is 100 DEG C -150 DEG C, and interlayer temperature control is not more than in welding process
150℃；Welding current is 120A-135A；Speed of welding is 0.5m/min；Gas flow is 15-25L/min；Built-up welding complete to
Workpiece natural cooling discharges stress；
(1-6) carries out vehicle pin, unilateral half smart car of the 0.2mm more than design size to the paving welding zone domain of outer ring；
(1-7) flaw detection:
By the JB/T6062-2007TT grades of half smart car regions PT, if there is no problem, continue processing in place；If you have questions, then digging
Built-up welding；Built-up welding region does not allow to provide PT flaw detection report after qualified there are face crack and biggish incomplete fusion defect；
(1-8) smart car: smart car, roughness 1.6 are carried out to the A of outer ring, part B according to drawing requirement；15 ° of inclined-planes, it is coarse
Degree 6.3；
(1-9) deburring, clears up the surface of outer ring；
(1-10) complete detection machining dimension, and make a record；
(1-11) antirust: applying antirust oil at the machining of outer ring, factory is protected.
It should be understood that this embodiment is only used to illustrate the invention but not to limit the scope of the invention.In addition, it should also be understood that,
After having read the content of the invention lectured, those skilled in the art can make various modifications or changes to the present invention, these etc.
Valence form is also fallen within the scope of the appended claims of the present application.
Claims (3)
1. a kind of restorative procedure in the working seal outer ring alloy face of main inlet valve of hydroenergy storage station, characterized in that including such as
Lower step:
Outer ring is put on vertical lathe by (1-1), makes the big end of outer ring downward, withSeam allowance is with small Flange Plane
N Reference Alignment, symmetrical school circle, pad pressure stabilizing jail；
(1-2) check the Flange Plane of big end of outer ring, small Flange Plane andSeam allowance bounce, confirmation outer ring is horizontal,
MeasurementSeam allowance diameter dimension, record data and mark position；
(1-3) carries out turning to the aluminium alloy region of outer ring, and unilateral Lathe quantity is 0.2mm；
(1-4) measures the diameter dimension after turning, and makes a record, and local pit eliminates defect using polishing mode, it is ensured that dew
The metallic luster of basic material out；
(1-5) built-up welding:
The objectionable impurities such as built-up welding region and oil, water, vapour within the scope of the 30mm of periphery are removed before built-up welding；Built-up welding region be outer ring A,
Part B, using CO 2 gas-shielded carry out built-up welding；
(1-6) carries out vehicle pin, unilateral half smart car of the 0.2mm more than design size to the paving welding zone domain of outer ring；
(1-7) flaw detection:
By the JB/T6062-2007II grades of half smart car regions PT, if there is no problem, continue processing in place；If you have questions, then digging heap
Weldering；Built-up welding region does not allow to provide PT flaw detection report after qualified there are face crack and biggish incomplete fusion defect；
(1-8) smart car: smart car, roughness 1.6 are carried out to the A of outer ring, part B according to drawing requirement；15 ° of inclined-planes, roughness
6.3；
(1-9) deburring, cleaning work seal the surface of outer ring；
(1-10) complete detection machining dimension, and make a record；
(1-11) antirust: applying antirust oil at the machining of working seal outer ring, factory is protected.
2. the restorative procedure in the working seal outer ring alloy face of the main inlet valve of hydroenergy storage station according to claim 1,
It is characterized in that the resurfacing welding material in step (1-5) is H03Cr19Ni12M02Si stainless steel.
3. the reparation side in the working seal outer ring alloy face of the main inlet valve of hydroenergy storage station according to claim 1 or 2
Method, characterized in that the welding pre-heating temperature in step (1-5) is 100 DEG C -150 DEG C, and interlayer temperature control is little in welding process
In 150 DEG C；Welding current is 120A-135A；Speed of welding is 0.5m/min；Gas flow is 15-25L/min；Built-up welding is completed
Workpiece natural cooling to be added discharges stress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910288120.9A CN110280966A (en) | 2019-04-10 | 2019-04-10 | The restorative procedure in the working seal outer ring alloy face of the main inlet valve of hydroenergy storage station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910288120.9A CN110280966A (en) | 2019-04-10 | 2019-04-10 | The restorative procedure in the working seal outer ring alloy face of the main inlet valve of hydroenergy storage station |
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| CN110280966A true CN110280966A (en) | 2019-09-27 |
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| EP2113633A2 (en) * | 2008-04-30 | 2009-11-04 | United Technologies Corporation | Method to weld repair blade outer air seals |
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| CN109108568A (en) * | 2018-09-12 | 2019-01-01 | 新疆科鼎环保科技有限公司 | High pressure valve leakage position restorative procedure |
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| EP2113633A2 (en) * | 2008-04-30 | 2009-11-04 | United Technologies Corporation | Method to weld repair blade outer air seals |
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| CN109108568A (en) * | 2018-09-12 | 2019-01-01 | 新疆科鼎环保科技有限公司 | High pressure valve leakage position restorative procedure |
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Application publication date: 20190927 |