CN105014297A - Valve sealing performance overhaul process - Google Patents
Valve sealing performance overhaul process Download PDFInfo
- Publication number
- CN105014297A CN105014297A CN201510430947.0A CN201510430947A CN105014297A CN 105014297 A CN105014297 A CN 105014297A CN 201510430947 A CN201510430947 A CN 201510430947A CN 105014297 A CN105014297 A CN 105014297A
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- China
- Prior art keywords
- valve
- corrosion
- examined
- check
- fatigue
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Classifications
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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
Abstract
The invention relates to a valve sealing performance overhaul process. The production method comprises the steps that a gland nut, a bushing and a vertical-adjusting rod are dismantled, whether a threaded portion is damaged or not is examined, a cleaning agent is used for removing rust, and then wiping is thoroughly performed; a vertical-adjusting ring is taken out, and the threaded portion is thoroughly cleaned; whether corrosion, fatigue corrosion, blowing loss, cavitation and indentation defects exist on the surface of a valve or not is examined, and whether corrosion, fatigue corrosion, blowing loss, cavitation, indentation defects and impact deformation exist on the sealing surface of a valve seat or not is examined; whether biting, bonding and clamping traces exist on the surface of a valve rod or not is examined, if yes, cleaning and finishing are performed, and the valve rod is replaced if the traces are obvious; whether defects like cracks exist on the face making contact with the head of the valve rod or not is examined; valve sealing performance is examined; the valve vacuum degree is examined; if it is determined that no crack or double skin or serious corrosion exits on the surface of spring, no abnormal sound is produced during knocking and the sound is sonorous, the whole process is finished. The process is simple, practical and reliable, and the quality of a produced clutch disc is substantially improved.
Description
Technical field
The present invention relates to valve maintenance field, be specifically related to a kind of valve seal maintenance craft.
Background technology
Valve is the control assembly in fluid delivery system, has cut-off, adjustment, water conservancy diversion, prevents the functions such as adverse current, voltage stabilizing, shunting or overflow pressure relief.The sealing of valve is related to the operation of pipeline and equipment economy, safety.The sealing property of valve refers to that each sealing steric hindrance of valve stops the ability of dielectric leakage, and it is the most important technical performance index of valve.There are three places at the sealing position of valve: the contact position between opening and closing element and valve seat two sealing surface; The cooperation place of filler and valve rod and stuffing-box; The junction of valve body and valve gap.Wherein the leakage at last place is called interior leakage, and it blocks the ability of medium by affecting valve, and the leakage at rear two places is called and leaks outside, and namely medium is from valve internal leakage to valve.Leak outside and can cause loss of material, contaminated environment, also can cause the accident time serious.For inflammable and explosive, poisonous or have the medium of radiation, leak outside unallowable especially, thus valve must have reliable sealing property.
Summary of the invention
In order to solve above-mentioned Problems existing, the invention discloses a kind of valve seal maintenance craft, this equipment is a kind of structure a kind of valve seal maintenance craft simple, safe and reliable, easy to use, with low cost.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of valve seal maintenance craft, is characterized in that: its production method is as follows:
1) gland nut, lining, up and down adjusting lever are pulled down, check that screw thread position is with or without damage, should repair with file if any damage, by wiped clean after cleaning agent rust cleaning;
2) upper and lower adjustment ring is taken out, thoroughly cleaning screw thread position;
3) whether check valve surface has corrosion and fatigue burn into blow loss, cavitation erosion, impression defect, and whether valve seat sealing surface has corrosion and fatigue burn into blow loss, cavitation erosion, impression defect, blastic deformation;
4) check whether stem surface has the vestige biting, bond, block, if any clearing up, repair, as changed time serious;
5) inspection and valve rod head interface have the defects such as flawless;
6) valve seal is checked;
7) vacuum of valve is checked;
8) check spring surface flawless, pipe, serious corrosion, beat be as good as sound, sound is loud and clear, whole technique terminates.
As a modification of the present invention, in described step 7), vacuum should reach 60-83KPa, and does not decline in 3-5s.
As a modification of the present invention, in described step 7), vacuum should reach 71KPa, and does not decline in 6s.
As a modification of the present invention, in described step 4), the abrasion condition of valve rod must not be greater than 0.1mm.
Owing to have employed above technology, the present invention comparatively prior art compares, and the beneficial effect had is as follows:
Described maintenance craft of the present invention, step is simple, convenient, can be successfully applied to the maintenance process of valve, and repair quality is high, maintenance process simple, and overhaul efficiency is high, greatly reduces the cost of overhaul, improves the service efficiency of valve.
Detailed description of the invention
Below in conjunction with detailed description of the invention, illustrate the present invention further.
embodiment 1:
A kind of valve seal maintenance craft, is characterized in that: its production method is as follows:
1) gland nut, lining, up and down adjusting lever are pulled down, check that screw thread position is with or without damage, should repair with file if any damage, by wiped clean after cleaning agent rust cleaning;
2) upper and lower adjustment ring is taken out, thoroughly cleaning screw thread position;
3) whether check valve surface has corrosion and fatigue burn into blow loss, cavitation erosion, impression defect, and whether valve seat sealing surface has corrosion and fatigue burn into blow loss, cavitation erosion, impression defect, blastic deformation;
4) check whether stem surface has the vestige biting, bond, block, if any clearing up, repair, as changed time serious;
5) inspection and valve rod head interface have the defects such as flawless;
6) valve seal is checked;
7) vacuum of valve is checked;
8) check spring surface flawless, pipe, serious corrosion, beat be as good as sound, sound is loud and clear, whole technique terminates.
embodiment 2:
A kind of valve seal maintenance craft, is characterized in that: its production method is as follows:
1) gland nut, lining, up and down adjusting lever are pulled down, check that screw thread position is with or without damage, should repair with file if any damage, by wiped clean after cleaning agent rust cleaning;
2) upper and lower adjustment ring is taken out, thoroughly cleaning screw thread position;
3) whether check valve surface has corrosion and fatigue burn into blow loss, cavitation erosion, impression defect, and whether valve seat sealing surface has corrosion and fatigue burn into blow loss, cavitation erosion, impression defect, blastic deformation;
4) check whether stem surface has the vestige biting, bond, block, if any clearing up, repair, as changed time serious;
5) inspection and valve rod head interface have the defects such as flawless;
6) valve seal is checked;
7) vacuum of valve is checked;
8) check spring surface flawless, pipe, serious corrosion, beat be as good as sound, sound is loud and clear, whole technique terminates.
In described step 7), vacuum should reach 60-83KPa, and does not decline in 3-5s.All the other steps are identical with embodiment 1 with advantage.
embodiment 3:
A kind of valve seal maintenance craft, is characterized in that: its production method is as follows:
1) gland nut, lining, up and down adjusting lever are pulled down, check that screw thread position is with or without damage, should repair with file if any damage, by wiped clean after cleaning agent rust cleaning;
2) upper and lower adjustment ring is taken out, thoroughly cleaning screw thread position;
3) whether check valve surface has corrosion and fatigue burn into blow loss, cavitation erosion, impression defect, and whether valve seat sealing surface has corrosion and fatigue burn into blow loss, cavitation erosion, impression defect, blastic deformation;
4) check whether stem surface has the vestige biting, bond, block, if any clearing up, repair, as changed time serious;
5) inspection and valve rod head interface have the defects such as flawless;
6) valve seal is checked;
7) vacuum of valve is checked;
8) check spring surface flawless, pipe, serious corrosion, beat be as good as sound, sound is loud and clear, whole technique terminates.
In described step 7), vacuum should reach 60-83KPa, and does not decline in 3-5s.In described step 7), vacuum should reach 71KPa, and does not decline in 6s, and all the other steps are identical with embodiment 1 with advantage.
embodiment 4:
A kind of valve seal maintenance craft, is characterized in that: its production method is as follows:
1) gland nut, lining, up and down adjusting lever are pulled down, check that screw thread position is with or without damage, should repair with file if any damage, by wiped clean after cleaning agent rust cleaning;
2) upper and lower adjustment ring is taken out, thoroughly cleaning screw thread position;
3) whether check valve surface has corrosion and fatigue burn into blow loss, cavitation erosion, impression defect, and whether valve seat sealing surface has corrosion and fatigue burn into blow loss, cavitation erosion, impression defect, blastic deformation;
4) check whether stem surface has the vestige biting, bond, block, if any clearing up, repair, as changed time serious;
5) inspection and valve rod head interface have the defects such as flawless;
6) valve seal is checked;
7) vacuum of valve is checked;
8) check spring surface flawless, pipe, serious corrosion, beat be as good as sound, sound is loud and clear, whole technique terminates.
In described step 7), vacuum should reach 60-83KPa, and do not decline in 3-5s, in described step 7), vacuum should reach 71KPa, and does not decline in 6s, in described step 4), the abrasion condition of valve rod must not be greater than 0.1mm, and all the other steps are identical with embodiment 1 with advantage.
Above-described embodiment is only the preferred technical solution of the present invention; and should not be considered as restriction of the present invention; the technical scheme that protection scope of the present invention should be recorded with claim; the equivalents comprising technical characteristic in the technical scheme of claim record is protection domain; namely the equivalent replacement within the scope of this improves, also within protection scope of the present invention.
Claims (4)
1. a valve seal maintenance craft, is characterized in that: its production method is as follows:
1) gland nut, lining, up and down adjusting lever are pulled down, check that screw thread position is with or without damage, should repair with file if any damage, by wiped clean after cleaning agent rust cleaning;
2) upper and lower adjustment ring is taken out, thoroughly cleaning screw thread position;
3) whether check valve surface has corrosion and fatigue burn into blow loss, cavitation erosion, impression defect, and whether valve seat sealing surface has corrosion and fatigue burn into blow loss, cavitation erosion, impression defect, blastic deformation;
4) check whether stem surface has the vestige biting, bond, block, if any clearing up, repair, as changed time serious;
5) inspection and valve rod head interface have the defects such as flawless;
6) valve seal is checked;
7) vacuum of valve is checked;
8) check spring surface flawless, pipe, serious corrosion, beat be as good as sound, sound is loud and clear, whole technique terminates.
2. a kind of valve seal maintenance craft according to claim 1, is characterized in that: in described step 7), vacuum should reach 60-83KPa, and does not decline in 3-5s.
3. a kind of valve seal maintenance craft according to claim 2, is characterized in that: in described step 7), vacuum should reach 71KPa, and does not decline in 6s.
4. a kind of valve seal maintenance craft according to claim 3, is characterized in that: in described step 4), the abrasion condition of valve rod must not be greater than 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510430947.0A CN105014297A (en) | 2015-07-22 | 2015-07-22 | Valve sealing performance overhaul process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510430947.0A CN105014297A (en) | 2015-07-22 | 2015-07-22 | Valve sealing performance overhaul process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105014297A true CN105014297A (en) | 2015-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510430947.0A Pending CN105014297A (en) | 2015-07-22 | 2015-07-22 | Valve sealing performance overhaul process |
Country Status (1)
| Country | Link |
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| CN (1) | CN105014297A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290705A (en) * | 2015-11-30 | 2016-02-03 | 山东东益机械制造有限公司 | Maintenance method for oil lubrication type couplers |
| CN108019547A (en) * | 2017-12-04 | 2018-05-11 | 青海中控太阳能发电有限公司 | A kind of technical method to valve maintenance |
| CN109695774A (en) * | 2017-10-20 | 2019-04-30 | 中核苏阀科技实业股份有限公司 | A kind of hard seal ball valve is interior to leak closed loop repair method |
| CN114799759A (en) * | 2022-05-07 | 2022-07-29 | 长兴永力机械科技有限公司 | Production equipment and production method for hydraulic vehicle accessory steering seat |
-
2015
- 2015-07-22 CN CN201510430947.0A patent/CN105014297A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290705A (en) * | 2015-11-30 | 2016-02-03 | 山东东益机械制造有限公司 | Maintenance method for oil lubrication type couplers |
| CN105290705B (en) * | 2015-11-30 | 2017-12-01 | 山东东益机械制造有限公司 | A kind of method for maintaining of oil lubricating type shaft coupling |
| CN109695774A (en) * | 2017-10-20 | 2019-04-30 | 中核苏阀科技实业股份有限公司 | A kind of hard seal ball valve is interior to leak closed loop repair method |
| CN109695774B (en) * | 2017-10-20 | 2020-08-21 | 中核苏阀科技实业股份有限公司 | Maintenance method for inner leakage closed loop of hard seal ball valve |
| CN108019547A (en) * | 2017-12-04 | 2018-05-11 | 青海中控太阳能发电有限公司 | A kind of technical method to valve maintenance |
| CN114799759A (en) * | 2022-05-07 | 2022-07-29 | 长兴永力机械科技有限公司 | Production equipment and production method for hydraulic vehicle accessory steering seat |
| CN114799759B (en) * | 2022-05-07 | 2023-01-17 | 长兴永力机械科技有限公司 | Production equipment and production method for hydraulic vehicle accessory steering seat |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151104 |