CN108019547A - A kind of technical method to valve maintenance - Google Patents
A kind of technical method to valve maintenance Download PDFInfo
- Publication number
- CN108019547A CN108019547A CN201711256338.3A CN201711256338A CN108019547A CN 108019547 A CN108019547 A CN 108019547A CN 201711256338 A CN201711256338 A CN 201711256338A CN 108019547 A CN108019547 A CN 108019547A
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- CN
- China
- Prior art keywords
- valve
- flap
- deck
- component
- technical method
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- 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.)
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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
- F16K27/00—Construction of housing; Use of materials therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a kind of technical method to valve maintenance, comprise the following steps：Valve body is disintegrated；The sealing surface of valve body is detected；Valve body is detected；Valve rod and valve deck are detected；Detection valve rod and valve deck are completely embedded；Point, groove must not occur in the sealing surface of flap and valve seat, and surface roughness should be not less than 3.2, and the taper of spool and flap should be consistent；Replaced for undesirable component, the component after replacement is repaired, and reparation is successfully continuing with, it is impossible to is repaired and is successfully eliminated.The present invention proposes different method for dismounting according to different valves, easy to further detection and the maintenance of the inside to valve body, avoid valve detection is improper from occurring using unexpected, and the detection relation to valve is set, improve detection efficiency and ensure that repair quality ensures that valve uses the normal operation of equipment.
Description
Technical field
The present invention relates to valve service technique field, is specifically a kind of technical method to valve maintenance.
Background technology
The valve connection important as boiler of power plant one and control element, its adjustment to whole steam generator system play key
Effect, valve once break down, and will necessarily seriously affect the normal operation of whole steam generator system.To ensure boiler of power plant just
Normal safe operation, we must carry out the maintenance repair work of boiler of power plant valve.
The content of the invention
It is an object of the invention to provide a kind of technical method to valve maintenance, to solve the problems of the prior art.
To achieve the above object, the present invention provides following technical solution：
A kind of technical method to valve maintenance, comprises the following steps：
S1, valve body is disintegrated；
S2, when disintegration, carefully must avoid component from causing metal sealing to damage because of collision；
S3, is placed into home, damage is toppled in placement by the component after disintegrating in step S1 and S2；
S4, is detected the sealing surface of valve body；
S5, detects valve body, it shall be guaranteed that valve body sealing surface lacks phenomenon without sand holes, crackle, valve inner keep cleaning,
No-sundries；
S6, detects valve rod and valve deck, connects the screw hole used and ensures cleaning and lossless, screw rod keeps vertical, curvature
Less than the 1/1000 of total length, ovality is less than 0.5mm, and screw hole screw thread detects valve rod and valve deck is completely embedded, no without wear phenomenon
The phenomenon of disconnected button and snap fastener can occur；
Point, groove must not occur in the sealing surface of S7, flap and valve seat, and surface roughness should be not less than 3.2, spool and
The taper of flap should be consistent；
S8, is replaced for undesirable component, and the component after replacement is repaired, and reparation successfully continues to make
With, it is impossible to repair and successfully eliminate.
Further, in the step S1, when valve body is clipping type shut-off valve, valve cover need to be rotated by 90 °, unloads lower Disc
And valve rod, clean the iron rust in filler and valve door component in filled chamber.
Further, in the step S1, when valve body is sealed shut-off valve, first have to remove the valve deck and valve of connection
The bolt of door, unloads bottom flange, packing ring, cooler, locking nut, then flap is dismantled.
Further, in the step S1, when valve body is sealed non-return valve, non-return valve disintegrates it should be noted that will
The structure of non-return valve is distinguished, non-return valve has been generally divided into spring non-return valve and without spring non-return valve, has spring non-return valve to be solved
Body:First the bolt for connecting valve deck and valve body is pulled down, and rotary valve cover unloads, and then takes out spring and flap；It is inverse without spring
Only valve disintegrates:The bolt of connection valve deck and valve body can be directly unloaded, valve deck is removed, then unloads four cyclizations or six directions ring,
Filler is taken out, pulls down flap.
Further, the component used is met after described pair of disintegration and carries out anti-corrosion treatment.
Compared with prior art, the beneficial effects of the invention are as follows：Different method for dismounting is proposed according to different valves, just
Further detect and repair in the inside to valve body, avoid the improper appearance of valve detection from using unexpected, and to the inspection of valve
Survey relation is set, and is improved detection efficiency and is ensured that repair quality ensures that valve uses the normal operation of equipment.
Embodiment
Below in conjunction with the embodiment of the present invention, the technical solution in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Example, belongs to the scope of protection of the invention.
A kind of technical method to valve maintenance, comprises the following steps：
S1, valve body is disintegrated, and when valve body is clipping type shut-off valve, need to be rotated by 90 ° valve cover, be unloaded lower Disc and valve
Bar, cleans the iron rust in filler and valve door component in filled chamber；When valve body is sealed shut-off valve, the company of dismounting is first had to
The valve deck and the bolt of valve connect, unloads bottom flange, packing ring, cooler, locking nut, then flap is dismantled；Valve body is close
During the non-return valve of envelope formula, non-return valve disintegrates it should be noted that to distinguish the structure of non-return valve, and non-return valve has been generally divided into spring
Non-return valve and without spring non-return valve, has spring non-return valve to disintegrate:First the bolt for connecting valve deck and valve body is pulled down, and is rotated
Valve deck unloads, and then takes out spring and flap；No spring non-return valve disintegrates:The spiral shell of connection valve deck and valve body can directly be unloaded
Bolt, removes valve deck, then unloads four cyclizations or six directions ring, filler is taken out, pulls down flap.
S2, when disintegration, carefully must avoid component from causing metal sealing to damage because of collision；
S3, is placed into home, damage is toppled in placement by the component after disintegrating in step S1 and S2；
S4, is detected the sealing surface of valve body；
S5, detects valve body, it shall be guaranteed that valve body sealing surface lacks phenomenon without sand holes, crackle, valve inner keep cleaning,
No-sundries；
S6, detects valve rod and valve deck, connects the screw hole used and ensures cleaning and lossless, screw rod keeps vertical, curvature
Less than the 1/1000 of total length, ovality is less than 0.5mm, and screw hole screw thread detects valve rod and valve deck is completely embedded, no without wear phenomenon
The phenomenon of disconnected button and snap fastener can occur；
Point, groove must not occur in the sealing surface of S7, flap and valve seat, and surface roughness should be not less than 3.2, spool and
The taper of flap should be consistent, and anti-corrosion treatment is carried out to meeting the component used after disintegration；
S8, is replaced for undesirable component, and the component after replacement is repaired, and reparation successfully continues to make
With, it is impossible to repair and successfully eliminate.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Claims (5)
1. a kind of technical method to valve maintenance, it is characterised in that comprise the following steps：
S1, valve body is disintegrated；
S2, when disintegration, carefully must avoid component from causing metal sealing to damage because of collision；
S3, is placed into home, damage is toppled in placement by the component after disintegrating in step S1 and S2；
S4, is detected the sealing surface of valve body；
S5, detects valve body, it shall be guaranteed that valve body sealing surface lacks phenomenon without sand holes, crackle, and valve inner keeps cleaning, without miscellaneous
Thing；
S6, detects valve rod and valve deck, connects the screw hole used and ensures cleaning and lossless, screw rod keeps vertical, and curvature is less than
The 1/1000 of total length, ovality are less than 0.5mm, and screw hole screw thread detects valve rod and valve deck is completely embedded, it is impossible to go out without wear phenomenon
The now phenomenon of disconnected button and snap fastener；
Point, groove must not occur in the sealing surface of S7, flap and valve seat, and surface roughness should be not less than 3.2, spool and flap
Taper should be consistent；
S8, is replaced for undesirable component, and the component after replacement is repaired, and reparation is successfully continuing with,
It cannot repair and successfully eliminate.
A kind of 2. technical method to valve maintenance according to claim 1, it is characterised in that in the step S1, valve
When body is clipping type shut-off valve, valve cover need to be rotated by 90 °, unload lower Disc and valve rod, clean filler and valve in filled chamber
Iron rust in door component.
A kind of 3. technical method to valve maintenance according to claim 1, it is characterised in that in the step S1, valve
When body is sealed shut-off valve, first has to remove the valve deck of connection and the bolt of valve, unload bottom flange, packing ring, cooler, lock
Tight nut, then flap is dismantled.
A kind of 4. technical method to valve maintenance according to claim 1, it is characterised in that in the step S1, valve
When body is sealed non-return valve, non-return valve disintegrates it should be noted that to distinguish the structure of non-return valve, and non-return valve is generally divided into
There is spring non-return valve and without spring non-return valve, there is spring non-return valve to disintegrate:First the bolt for connecting valve deck and valve body is pulled down,
And rotary valve cover unloads, then spring and flap are taken out；No spring non-return valve disintegrates:Connection valve deck and valve can directly be unloaded
The bolt of body, removes valve deck, then unloads four cyclizations or six directions ring, filler is taken out, pulls down flap.
5. a kind of technical method to valve maintenance according to claim 1, it is characterised in that meet after described pair of disintegration
The component used carries out anti-corrosion treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711256338.3A CN108019547A (en) | 2017-12-04 | 2017-12-04 | A kind of technical method to valve maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711256338.3A CN108019547A (en) | 2017-12-04 | 2017-12-04 | A kind of technical method to valve maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108019547A true CN108019547A (en) | 2018-05-11 |
Family
ID=62078281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711256338.3A Pending CN108019547A (en) | 2017-12-04 | 2017-12-04 | A kind of technical method to valve maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108019547A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113108120A (en) * | 2021-05-10 | 2021-07-13 | 潘泓璋 | Automatic locking device with valve rod bending detection function for butterfly valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639643A (en) * | 2013-11-27 | 2014-03-19 | 江苏力沛电力工程技术服务有限公司 | Repair technology for valve sealing surface |
| CN105014297A (en) * | 2015-07-22 | 2015-11-04 | 江苏曜曜铸业有限公司 | Valve sealing performance overhaul process |
| CN106312438A (en) * | 2016-06-24 | 2017-01-11 | 南通联恒新材料有限公司 | Overhaul process for sealing surface of valve |
-
2017
- 2017-12-04 CN CN201711256338.3A patent/CN108019547A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639643A (en) * | 2013-11-27 | 2014-03-19 | 江苏力沛电力工程技术服务有限公司 | Repair technology for valve sealing surface |
| CN105014297A (en) * | 2015-07-22 | 2015-11-04 | 江苏曜曜铸业有限公司 | Valve sealing performance overhaul process |
| CN106312438A (en) * | 2016-06-24 | 2017-01-11 | 南通联恒新材料有限公司 | Overhaul process for sealing surface of valve |
Non-Patent Citations (1)
| Title |
|---|
| 韩笑: "锅炉阀门检修的技术要点研究", 《科技创业家》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113108120A (en) * | 2021-05-10 | 2021-07-13 | 潘泓璋 | Automatic locking device with valve rod bending detection function for butterfly valve |
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Application publication date: 20180511 |
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| RJ01 | Rejection of invention patent application after publication |