CN110227986A - A kind of repair method of oil tanker PV valve - Google Patents
A kind of repair method of oil tanker PV valve Download PDFInfo
- Publication number
- CN110227986A CN110227986A CN201910504591.9A CN201910504591A CN110227986A CN 110227986 A CN110227986 A CN 110227986A CN 201910504591 A CN201910504591 A CN 201910504591A CN 110227986 A CN110227986 A CN 110227986A
- Authority
- CN
- China
- Prior art keywords
- flap
- valve
- valve seat
- grinding
- lifting handle
- 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
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000000227 grinding Methods 0.000 claims abstract description 36
- 238000003801 milling Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims description 2
- 239000004519 grease Substances 0.000 claims 1
- 238000005336 cracking Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
- F16K17/194—Equalising valves predominantly for tanks weight-loaded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B15/00—Machines or devices designed for grinding seat surfaces; Accessories therefor
- B24B15/04—Machines or devices designed for grinding seat surfaces; Accessories therefor on valve members
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K29/00—Arrangements for movement of valve members other than for opening and closing the valve, e.g. for grinding-in, for preventing sticking
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The present invention relates to a kind of repair methods of oil tanker PV valve, Step 1: unclamping nut cap and lift lug；Step 2: being wiped to flap；Step 3: binding type grinding abrasive paper is cut into suitably sized, and it is bonded on valve seat；Step 4: falling into flap in valve seat using lifting handle, and rotate flap；Step 5: completing grinding work；Step 6: lifting and keeping flap that binding type pouncing paper is cut into suitable dimension and is bonded on flap after wiping flap and valve seat in the position of promotion；Step 7: being fallen flap with lifting handle, and continue to rotate flap；Step 8: flap is lifted with lifting handle, takes out the grinding abrasive paper on flap, and wipe the contact surface of flap and valve seat after completing flap grinding work；Step 9: after completing all grinding process, assembling test, and No leakage is checked whether there is, the valve completed using such technique is tested using blue oil test, and the contact area of flap and valve seat reaches 95% or more.
Description
Technical field
The present invention relates to inspection and repair of ship fields, and in particular to a kind of repair method of oil tanker PV valve.
Background technique
PV valve is also known as high-rate discharge pressure/vacuum, it is that vacuum valve, pressure valve and high-rate discharge device are Trinitarian
The oil cargo tank gas permeable devices of gravity type automatic pressure control size.Its function can make a large amount of boil-off gas during loading of oil cargo
Oil cargo tank is discharged in mixed gas.
Its leakproofness determines the safer shipping of ship, and existing repair method is needed using hand lapping, using grinding
Frosted low efficiency, and be easy to appear and do over again, the more serious repair cycle that also will affect ship.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of repair method of oil tanker PV valve.
To achieve the above object, the present invention provides the following technical scheme that a kind of repair method of oil tanker PV valve comprising
Following steps:
Step 1: unclamping nut cap and lift lug, lift lug is fixed on valve rod, is lifted flap by lifting handle；
Step 2: lifting and maintaining flap, the contact surface of flap and valve seat is wiped；
Step 3: binding type grinding abrasive paper is cut into suitably sized, and it is bonded on valve seat；
Step 4: falling into flap in valve seat using lifting handle, and rotate flap；
Step 5: flap to be lifted to lifting handle and taken out grinding abrasive paper, again to flap and valve seat after completing grinding work
It is wiped；If it find that the polishing scratch of flap and valve seat is consistent with each other, then work completion is ground, otherwise, continues step 3 to step
Rapid four；
Step 6: lifting and flap being kept to be cut into binding type pouncing paper properly after wiping flap and valve seat in the position of promotion
Size is simultaneously bonded on flap；
Step 7: being fallen flap with lifting handle, and continue to rotate flap；
Step 8: being lifted flap with lifting handle after completing flap grinding work, the grinding abrasive paper on flap is taken out, and
Wipe the contact surface of flap and valve seat；
Step 9: after completing all grinding process, assembling test, and check for leaks.
Above-mentioned steps can be used for the pressure valve of PV valve or the grinding of vacuum valve.
Need to go through whether each part has scratch or damage before step 1.
In step 2, the condensation containing solid particle adhered on the contact surface of flap and valve seat is removed using anti-oil spray
Object.
In step 4 and step 7, the revolving speed of flap is no more than 2 revolutions per seconds, is no more than 20 turns every time.
For the grinding of vacuum valve, need to remove bottom flame screen and cover sheet before the milling, and take out clump weight.
Beneficial effects of the present invention: the valve completed using such technique is tested using blue oil test, flap and valve
The contact area of seat reaches 95% or more, compared to the valve mass of first two technique grinding be significantly improved, and lead to
Excess pressure is verified, and can satisfy the test stone of ISO 15364 completely.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of PV valve of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
The pressure that PV valve is suitable for mist of oil gas in cabin is adjusted, and for limiting pressure or vacuum degree in cargo tank, works as oil
Pressure valve disc starts take-off and discharges oil gas when lock pressure power is increased to the cracking pressure tabular value of valve setting, when pressure drop in cargo tank
To vacuum valve disc set cracking pressure negative value when, vacuum valve disc starts take-off, that is, air is automatically drawn into, to balance cabin internal pressure
Power keeps cargo tank safety.It has two valve bodies of pressure valve and vacuum valve substantially.
The present invention provides a kind of repair methods of oil tanker PV valve, then need whether first to go through each part before grinding
There are scratch or other damages, grinding repairing is carried out after checking.
Itself the following steps are included:
Step 1: unclamping nut cap 2 and lift lug 1, lift lug is fixed on valve rod, is lifted flap 3 by lifting handle,
It when unclamping nut and lift lug, answers manual handling that nut cap is installed, prevents from sliding and damaging.If valve seat is not manual installation, that
Flap or valve seat are possible to mutually collide and damage；In replacement and process of lapping, the components in addition to spare part will
Carry out cleaning maintenance；And when lift lug to be fixed on valve rod, need to check whether there is damaged location, according to specific feelings
Condition selects corresponding grinding abrasive paper.
Step 2: lifting and maintaining flap, the contact surface of flap and valve seat is wiped；It particularly to be noted that
The contact surface of flap and valve seat is typically covered with the coagulation containing solid particle, and this attachment is easier to cause the corruption on surface
Erosion, it is therefore necessary to remove these attachments, be typically chosen for this attachment and removed using anti-oil spray.
Step 3: binding type grinding abrasive paper is cut into suitably sized, and it is bonded on valve seat；
Step 4: falling into flap in valve seat using lifting handle, and rotate flap；Flap is fallen using lifting handle is careful
Enter in valve seat, rotate flap with suitable spanner, under normal circumstances, it is proposed that revolving speed is no more than 2 revolutions per seconds, is no more than every time
20 turns；
Step 5: flap to be lifted to lifting handle and taken out grinding abrasive paper, again to flap and valve seat after completing grinding work
It is wiped；If it find that the polishing scratch of flap and valve seat is consistent with each other, then work completion is ground, otherwise, continues step 3 to step
Rapid four；Whether have the adhesive residue of pouncing paper on surface, if any needing to be wiped if being needed to pay attention on valve seat in wiping simultaneously
It wipes completely, avoids damaging flap and valve seat.
Step 6: the grinding process of flap is identical as the grinding process of valve seat, lifts and keeps flap in the position of promotion,
After wiping flap and valve seat, binding type pouncing paper is cut into suitable dimension and is bonded on flap；
Step 7: being fallen flap with lifting handle, and continue to rotate flap, same revolving speed is no more than 2 revolutions per seconds, does not surpass every time
Cross 20 turns；
Step 8: being lifted flap with lifting handle after completing flap grinding work, the grinding abrasive paper on flap is taken out, and
Wipe the contact surface of flap and valve seat；
Wherein the grinding sequence of valve seat and flap cannot be changed, if sequence changes, may result in can completing grinding
It leaks.
Step 9: after completing all grinding process, assembling test, and checked for leaks with suds.
Wherein the lapping mode of pressure valve is carried out according to above step, and is directed to vacuum valve, then is needed before the milling
Bottom flame screen and cover sheet are removed, and take out clump weight.
Embodiment is not construed as limitation of the present invention, but any based on spiritual improvements introduced of the invention, all should be
Within protection scope of the present invention.
Claims (6)
1. a kind of repair method of oil tanker PV valve, it is characterised in that: itself the following steps are included:
Step 1: unclamping nut cap and lift lug, lift lug is fixed on valve rod, is lifted flap by lifting handle；
Step 2: lifting and maintaining flap, the contact surface of flap and valve seat is wiped；
Step 3: binding type grinding abrasive paper is cut into suitably sized, and it is bonded on valve seat；
Step 4: falling into flap in valve seat using lifting handle, and rotate flap；
Step 5: flap to be lifted to lifting handle and taken out grinding abrasive paper, again to flap and valve seat after completing grinding work
It is wiped；If it find that the polishing scratch of flap and valve seat is consistent with each other, then work completion is ground, otherwise, continues step 3 to step
Rapid four；
Step 6: lifting and flap being kept to be cut into binding type pouncing paper properly after wiping flap and valve seat in the position of promotion
Size is simultaneously bonded on flap；
Step 7: being fallen flap with lifting handle, and continue to rotate flap；
Step 8: being lifted flap with lifting handle after completing flap grinding work, the grinding abrasive paper on flap is taken out, and
Wipe the contact surface of flap and valve seat；
Step 9: after completing all grinding process, assembling test, and check for leaks.
2. a kind of repair method of oil tanker PV valve according to claim 1, it is characterised in that: above-mentioned steps can be used for PV valve
Pressure valve or vacuum valve grinding.
3. a kind of repair method of oil tanker PV valve according to claim 1, it is characterised in that: needed before step 1 carefully
Check whether each part has scratch or damage.
4. a kind of repair method of oil tanker PV valve according to claim 1, it is characterised in that: in step 2, use is grease proofing
The coagulation containing solid particle adhered on the contact surface of spray removal flap and valve seat.
5. a kind of repair method of oil tanker PV valve according to claim 1, it is characterised in that: in step 4 and step 7,
The revolving speed of flap is no more than 2 revolutions per seconds, is no more than 20 turns every time.
6. a kind of repair method of oil tanker PV valve according to claim 2, it is characterised in that: for the grinding of vacuum valve,
It needs to remove bottom flame screen and cover sheet before the milling, and takes out clump weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910504591.9A CN110227986A (en) | 2019-06-12 | 2019-06-12 | A kind of repair method of oil tanker PV valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910504591.9A CN110227986A (en) | 2019-06-12 | 2019-06-12 | A kind of repair method of oil tanker PV valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110227986A true CN110227986A (en) | 2019-09-13 |
Family
ID=67858882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910504591.9A Pending CN110227986A (en) | 2019-06-12 | 2019-06-12 | A kind of repair method of oil tanker PV valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110227986A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB253193A (en) * | 1925-03-11 | 1926-06-11 | Arthur Sydney Bowley | Improvements in or pertaining to the trueing of valves, and valve seatings and meanstherefor |
| JPH09192998A (en) * | 1996-01-17 | 1997-07-29 | Nishi Nippon Plant Kogyo Kk | Valve seat lapping device |
| JP2006021269A (en) * | 2004-07-07 | 2006-01-26 | Honda Motor Co Ltd | Method for mutually rubbing noncircular suction-exhaust valve seal surface |
| CN203185136U (en) * | 2013-03-22 | 2013-09-11 | 托伦斯精密机械（上海）有限公司 | Sealing face polishing head |
| CN204686617U (en) * | 2015-05-20 | 2015-10-07 | 大唐陕西发电有限公司户县热电厂 | A kind of seat of stop valve abrasive hand tool |
| CN107791125A (en) * | 2016-08-30 | 2018-03-13 | 镇江维纳特气门有限公司 | A kind of valve retainer restorative procedure |
| CN107855736A (en) * | 2017-11-07 | 2018-03-30 | 华润电力湖北有限公司 | A kind of conical surface seal grinding-in of valve technique |
| CN109514499A (en) * | 2018-12-28 | 2019-03-26 | 江苏核电有限公司 | A kind of Multi-functional valve core attaching/detaching apparatus and application method |
| CN109571255A (en) * | 2018-12-11 | 2019-04-05 | 中国原子能科学研究院 | A kind of grinding device |
-
2019
- 2019-06-12 CN CN201910504591.9A patent/CN110227986A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB253193A (en) * | 1925-03-11 | 1926-06-11 | Arthur Sydney Bowley | Improvements in or pertaining to the trueing of valves, and valve seatings and meanstherefor |
| JPH09192998A (en) * | 1996-01-17 | 1997-07-29 | Nishi Nippon Plant Kogyo Kk | Valve seat lapping device |
| JP2006021269A (en) * | 2004-07-07 | 2006-01-26 | Honda Motor Co Ltd | Method for mutually rubbing noncircular suction-exhaust valve seal surface |
| CN203185136U (en) * | 2013-03-22 | 2013-09-11 | 托伦斯精密机械（上海）有限公司 | Sealing face polishing head |
| CN204686617U (en) * | 2015-05-20 | 2015-10-07 | 大唐陕西发电有限公司户县热电厂 | A kind of seat of stop valve abrasive hand tool |
| CN107791125A (en) * | 2016-08-30 | 2018-03-13 | 镇江维纳特气门有限公司 | A kind of valve retainer restorative procedure |
| CN107855736A (en) * | 2017-11-07 | 2018-03-30 | 华润电力湖北有限公司 | A kind of conical surface seal grinding-in of valve technique |
| CN109571255A (en) * | 2018-12-11 | 2019-04-05 | 中国原子能科学研究院 | A kind of grinding device |
| CN109514499A (en) * | 2018-12-28 | 2019-03-26 | 江苏核电有限公司 | A kind of Multi-functional valve core attaching/detaching apparatus and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190913 |
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| RJ01 | Rejection of invention patent application after publication |