CN102416387B - On-line cleaning device and method for ball valve overhauling seal - Google Patents
On-line cleaning device and method for ball valve overhauling seal Download PDFInfo
- Publication number
- CN102416387B CN102416387B CN201110297778.XA CN201110297778A CN102416387B CN 102416387 B CN102416387 B CN 102416387B CN 201110297778 A CN201110297778 A CN 201110297778A CN 102416387 B CN102416387 B CN 102416387B
- Authority
- CN
- China
- Prior art keywords
- ball valve
- maintenance sealing
- water
- cleaning
- cleaning device
- 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.)
- Active
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012423 maintenance Methods 0.000 claims abstract description 78
- 238000007789 sealing Methods 0.000 claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000012459 cleaning agent Substances 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 12
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 11
- 238000011010 flushing procedure Methods 0.000 claims abstract description 9
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000002161 passivation Methods 0.000 claims abstract description 5
- 239000002351 wastewater Substances 0.000 claims abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 13
- 230000002378 acidificating effect Effects 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- 238000005554 pickling Methods 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 239000003112 inhibitor Substances 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 4
- 150000004706 metal oxides Chemical class 0.000 claims description 4
- 230000036632 reaction speed Effects 0.000 claims description 4
- 230000008439 repair process Effects 0.000 claims description 4
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 3
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000008399 tap water Substances 0.000 abstract 4
- 235000020679 tap water Nutrition 0.000 abstract 4
- 230000002035 prolonged effect Effects 0.000 abstract 2
- 238000005406 washing Methods 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 1
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 229960001484 edetic acid Drugs 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Details Of Valves (AREA)
Abstract
The invention discloses an on-line cleaning method for a ball valve overhauling seal in a range of overhauling and maintenance of power plant equipment. The method comprises the following steps of: selecting an on-line cleaning device, a cleaning agent and cleaning processes, withdrawing the ball valve overhauling seal, flushing with tap water, washing with acid, flushing with tap water after the acid washing, adding an alkali solvent for neutralization, flushing with tap water, performing surface passivation and flushing with tap water; and checking the cleaning effect. Nitric acid is used as a main cleaning agent and has strong capability of dissolving water scales, ferric oxide and rust scales and high reaction rate, and the reacted waste water is easily treated; and by cleaning the water scales of the throwing and withdrawing cavities of the ball valve overhauling seal, the service life of a ball valve sealing ring can be prolonged, the ball valve overhauling period is prolonged, the water leakage of a unit in a halting state is effectively reduced, the running safety and the running stability of the unit are improved, and the economic running capability of the unit is improved.
Description
Technical field
The invention belongs to electric power factory equipment repair and maintenance scope, particularly a kind of ball valve maintenance online cleaning device of sealing and method.
Background technology
Ball valve, as the prime valve of High Head Pumped Storage Power Station unit, is arranged on the upstream side of spiral case import, has the feature tight, hydraulic loss is little, water leakage is little of closing.Ball valve has important effect in Pumped Storage Plant, after unit and governing system break down, can be in moving water emergency cut-off ball valve, block current, prevent that unit from flying the ease time and exceeding permissible value, avoid fault spread; Its safe and reliable work is not only determining economy and the security of Power Plant operation, and is determining the safety of whole water-storage unit underground power house.
The inlet valve of Ming Tombs, Beijing accumulation of energy power plant is ball valve.Ball valve is arranged between conduit pipe and spiral case inlet extension, and ball valve upstream extremity is welded on upstream diversion Steel Tube Special, and ball valve downstream is connected on the import extension of spiral case by extension, downstream, and the integral arrangement of ball valve as shown in Figure 1a
In actual maintenance process, discovery throwing is moved back chamber 9 pressure reduction and is not arrived rated value, cause maintenance upstream seal ring 2 and maintenance downstream sealing ring 3 not to throw, fall back on position, maintenance sealing available position sensor 8 shows, in ball valve maintenance, find because ball valve maintenance sealing is thrown, move back chamber 9 and have a large amount of incrustation scales, cause in valve body 1, reduce in gap between external bushing and spool 4, cause the action resistance of slip ring 5 to increase, thereby cause ball valve maintenance sealing to throw, giving up the throne, it is not in place to put, causing ball valve maintenance sealing throwing to move back chamber 9 pressure reduction reduces (as Fig. 1 b, shown in Fig. 1 c), cause maintenance sealing reliably not throw and to move back, be not closed completely, maintenance sealing water leakage is quite large, cause spiral case manhole door not open, between turn(a)round, cannot enter spiral case, in draft tube, carry out service work, the normal maintenance of hydraulic turbine specialty and the safe operation of unit are affected, even cause the wearing and tearing of unit ball valve maintenance sealed packing, ball valve maintenance shortening sealing life, ball valve maintenance sealing is changed.
Ball valve maintenance drops into while being sealed in unit maintenance, in the time of unit reserve state, operating states of the units, is exiting position, and annual throwing of maintenance sealing moved back once, and action frequency is less, under these circumstances, is easier to move back chamber 9 in throwing and produces incrustation scale, shell growth.By making a set of on-line cleaning device; during annual unit maintenance, maintenance sealing is carried out to on-line cleaning; reach incrustation scale removing is carried out in ball valve maintenance sealing throwing, retreating chamber; can improve the service life of ball valve seal ring, extend the cycle of ball valve maintenance sealing maintenance, avoid the impact of penstock emptying on water channel; improve the standby time of unit; effectively reduce the water leakage under compressor emergency shutdown state, improved the security and stability of unit operation, improved the economical operation ability of unit.
Summary of the invention
The on-line cleaning device and method that the object of this invention is to provide a kind of ball valve maintenance sealing, comprising:
An on-line cleaning device for ball valve maintenance sealing, is characterized in that, adopts movable cleaning device, this cleaning device entirety adopts 304 stainless steels to make, casing 10 middle parts arrange the movable filter screen 11 of pull, and box cover is movable flip, facilitate scene to use and keep in repair box equipment; Electric control box 15 is placed in before casing 10, and water pump 12 is placed in casing 10 front end bottoms, and engineering for pump housing is equipped with beam, fastening with stainless steel bolt, and electric control box 15 adopts rubber seal to prevent that cleaning fluid is excessive with casing 10 junctions; The fixing electrically heated rod 16 in bottom of casing 10, electrically heated rod 16 connects temperature controller 14 in electric control box 15 and electric control box 15 side walls; Electric control box 15 is equipped with earth leakage protective device and emergency stop push button, and handrail 13 is equipped with in casing outside, 4 rubber wheels 18 is installed below bottom, is convenient to mobile in place and transport; Casing 10 rear end face bottoms are installed front end blow-down pipe 19, rear end blow-down pipe 20 and return pipe 21 side by side.
An on-line cleaning method for ball valve maintenance sealing, is characterized in that, comprises the steps:
1) first adopt movable cleaning device, and movable cleaning device is arranged on to cleaning device scene, be connected on ball valve maintenance sealing feed water valve 24 by the outlet pipe of the water pump 12 of movable cleaning device, the return pipe 21 of movable cleaning device is connected on ball valve maintenance sealed drain valve 23;
2) selection and the matting process of the cleaning agent of maintenance sealing, in the time selecting cleaning agent, must select according to material, technological requirement and the Environmental Safety that will clean, because the material of ball valve maintenance sealing is stainless steel and Casting aluminium bronze composition, therefore select acidic cleaner as main cleaning agent, the effect of acidic cleaner is incrustation scale and the metal oxide that stainless steel surfaces is removed in pickling, dissolve incrustation scale and peel off incrustation scale, it is strong that it dissolves incrustation scale, iron oxide, rust deposite ability, reaction speed is fast, and after reaction, waste water is easily processed; Matting is for first ball valve maintenance sealing being exited, and the running water that the maintenance sealing feed pipe 6 from valve body 1 passes into after running water rinses, rinses is discharged from maintenance sealing drainpipe 7; The acidic cleaner solution that is 4-5wt% by concentration afterwards adds ball valve from ball valve maintenance sealing feed water valve 24, temperature is controlled between 30-40 DEG C and cleans, after nitric acid cleans, the flushing outlet of inspection maintenance sealed drain valve 23 finishes pickling while no longer there is incrustation scale, impurity; Then select the acid high-efficient corrosion inhibitor of Lan-826, concentration is controlled in 1-3wt%, circulation 10-20 minute, play the effect of protection ball valve maintenance sealing, select tertiary sodium phosphate passivator, concentration is controlled at 0.5-1.5wt%, surface passivation 2-4 hour, last running water is rinsed well;
3) cleaning performance inspection
Use clear water rinse until the water quality of delivery port transparent be qualified without residue; Whether the throwing of the rear inspection maintenance of cleaning sealing ring moves back smooth and easy, does not occur that bite situation is normally, checks the force value in throwing, retreating chamber in the time overhauling sealing input and exit, and the force value in input chamber is 5.0Mpa, and the force value that exits chamber is that 0.00MPa is qualified.
Described acidic cleaner is a kind of in hydrochloric acid, nitric acid, hydrofluoric acid, sulfamic acid, citric acid and EDTA (ethylenediamine tetra-acetic acid).
The invention has the beneficial effects as follows by on-line cleaning device, during annual unit maintenance, ball valve maintenance sealing is carried out to on-line cleaning.The present invention is mainly made up of stainless steel and Casting aluminium bronze according to the material of ball valve maintenance sealing, therefore select acidic cleaner as main cleaning agent, the effect of nitric acid is incrustation scale and the metal oxide that stainless steel surfaces is removed in pickling, reduction of dissolved incrustation scale and peel off incrustation scale, it dissolves incrustation scale, iron oxide, rust deposite ability is strong, reaction speed is fast, and after reaction, waste water is easily processed.Reach incrustation scale cleaning is carried out in ball valve maintenance sealing throwing, retreating chamber; can improve the service life of ball valve seal ring; extend the cycle of ball valve maintenance; avoid the impact of penstock emptying on water channel; improve the standby time of unit; effectively reduce the water leakage under compressor emergency shutdown state, improved the security and stability of unit operation, improved the economical operation ability of unit.Solving power plant's ball valve maintenance sealing needs the problem of cleaning, the service life that extends ball valve maintenance sealing, extends the time between overhauls(TBO) of ball valve maintenance sealing.
Brief description of the drawings
Fig. 1 (a, b, c) is ball valve installation site schematic diagram.
Fig. 2 is ball valve cleaning device schematic diagram.
Fig. 3 is the on-line cleaning schematic diagram of ball valve maintenance sealing.
Fig. 4 is ball valve maintenance sealing cleaning device circuit diagram.
Detailed description of the invention
The invention provides a kind of on-line cleaning device and method of ball valve maintenance sealing.Be explained below in conjunction with drawings and Examples.
Be illustrated in figure 2 the on-line cleaning device schematic diagram of ball valve maintenance sealing.Adopt movable cleaning device, this cleaning device entirety adopts 304 stainless steels to make, and casing 10 middle parts arrange the movable filter screen 11 of pull, box cover is movable flip, facilitate scene to use and keep in repair box equipment, upper cover and casing junction adopt rubber seal, prevent that cleaning fluid 22 is excessive; Electric control box 15 is placed in before casing 10, and water pump 12 is placed in casing 10 front end bottoms, and engineering for pump housing is equipped with beam, fastening with stainless steel bolt, and electric control box 15 adopts rubber seal to prevent that cleaning fluid 22 is excessive with casing 10 junctions; The fixing electrically heated rod 16 in bottom of casing 10, electrically heated rod 16 connects temperature controller 14 and liquid level position demonstration 17 in electric control box 15 and electric control box 15 side walls; Temperature controller is provided with temperature automatic control switch, has temperature display; The interior installation power switch of electric control box 15, earth leakage protective device and emergency stop push button (as shown in Figure 4) are housed, handrail 13 is equipped with in casing outside, handrail as water pipe coiling support and cable hank around support.4 rubber wheels 18 are installed below in bottom, are convenient to mobile in place and transport; Casing 10 rear end face bottoms are installed front end blow-down pipe 19, rear end blow-down pipe 20 and return pipe 21 side by side.
Install at the scene that is illustrated in figure 3 movable cleaning device, and water pump 12 outlet pipes of movable cleaning device are connected on ball valve maintenance sealing feed water valve 24, and the return pipe 21 of movable cleaning device is connected on ball valve maintenance sealed drain valve 23;
3) selection of cleaning agent and matting process must be selected according to material, technological requirement and the Environmental Safety that will clean in the time selecting cleaning agent, selects acidic cleaner as main cleaning agent; The cleaning agent of selecting is a kind of in hydrochloric acid, nitric acid, hydrofluoric acid, sulfamic acid, citric acid and EDTA (ethylenediamine tetra-acetic acid).Be stainless steel and Casting aluminium bronze composition according to the material of ball valve maintenance sealing, therefore select nitric acid as main cleaning agent, the effect of nitric acid is incrustation scale and the metal oxide that stainless steel surfaces is removed in pickling, dissolve incrustation scale and peel off incrustation scale, it is strong that it dissolves incrustation scale, iron oxide, rust deposite ability, reaction speed is fast, and after reaction, waste water is easily processed.
Matting process, first ball valve maintenance sealing is exited, rinse, discharge (as shown in Fig. 1 b, Fig. 1 c) from maintenance sealing drainpipe 7 from the maintenance sealing feed pipe 6 use running water valve body 1, the salpeter solution that is 4.5wt% by concentration afterwards, clean, temperature is controlled at 35 DEG C, after nitric acid cleans, checks that flushing outlet finishes pickling while no longer there is incrustation scale, impurity; Then select the acid high-efficient corrosion inhibitor of Lan-826, concentration is controlled at 2.5wt%, circulate 15 minutes, play the effect of protection ball valve maintenance sealing, select tertiary sodium phosphate passivator, concentration is controlled at 1wt%, and the effect of protection maintenance sealing metal face and the fouling time of prolongation incrustation scale are played in passivation 3 hours;
4) cleaning performance inspection
Use clear water rinse until the water quality of delivery port transparent be qualified without residue; Whether the throwing of the rear inspection maintenance of cleaning sealing ring moves back smooth and easy, does not occur that bite situation is normally, checks the force value in throwing, retreating chamber in the time overhauling sealing input and exit, and the force value in input chamber is 5.0Mpa, and the force value that exits chamber is that 0.00MPa is qualified.
Claims (3)
1. one kind uses the on-line cleaning method of the on-line cleaning device of ball valve maintenance sealing, the on-line cleaning device of described ball valve maintenance sealing is movable cleaning device, water pump (12) is placed in casing (10) front end bottom, engineering for pump housing is equipped with beam, fastening with stainless steel bolt, the fixing electrically heated rod (16) in bottom of casing (10), electrically heated rod (16) connects temperature controller (14) in electric control box (15) and electric control box (15) side walls; Casing (10) middle part arranges the movable filter screen of pull (11), and box cover is movable flip, facilitates scene to use and keeps in repair box equipment; Electric control box (15) is placed in casing (10) above, and electric control box (15) adopts rubber seal to prevent that cleaning fluid is excessive with casing (10) junction; Electric control box (15) is equipped with earth leakage protective device and emergency stop push button, and casing (10) rear end face bottom is installed front end blow-down pipe (19), rear end blow-down pipe (20) and return pipe (21) side by side; Handrail (13) is equipped with in casing outside, and 4 rubber wheels (18) are installed in bottom, is convenient to mobile in place and transport; It is characterized in that, step is as follows:
1) first adopt movable cleaning device, and install at the scene, the outlet pipe of water pump (12) is connected to ball valve maintenance sealing feed water valve (24) upper, the return pipe (21) of cleaning device is connected on ball valve maintenance sealed drain valve (23);
2) selection and the matting process of the cleaning agent of maintenance sealing, in the time selecting cleaning agent, must select according to material, technological requirement and the Environmental Safety that will clean, because the material of ball valve maintenance sealing is made up of stainless steel and Casting aluminium bronze, therefore select acidic cleaner as main cleaning agent, the effect of acidic cleaner is incrustation scale and the metal oxide that stainless steel surfaces is removed in pickling, dissolve incrustation scale and peel off incrustation scale, it is strong that it dissolves incrustation scale, iron oxide, rust deposite ability, reaction speed is fast, and after reaction, waste water is easily processed; Matting is for first exiting ball valve maintenance sealing, and the maintenance sealing feed pipe (6) from valve body (1) passes into running water and rinses, and the running water after flushing is discharged from maintenance sealing drainpipe (7); The acidic cleaner solution that is 4-5wt% by concentration afterwards adds ball valve from ball valve maintenance sealing feed water valve (24), temperature is controlled between 30-40 DEG C and cleans, after pickling, the flushing outlet of inspection maintenance sealed drain valve (23) finishes pickling while no longer there is incrustation scale, impurity; Then select the acid high-efficient corrosion inhibitor of Lan-826, concentration is controlled in 1-3wt%, circulation 10-20 minute, play the effect of protection ball valve maintenance sealing, select tertiary sodium phosphate passivator, concentration is controlled at 0.5-1.5wt%, surface passivation 2-4 hour, last running water is rinsed well;
3) cleaning performance inspection
Use clear water rinse until the water quality of delivery port transparent be qualified without residue; Whether the throwing of the rear inspection maintenance of cleaning sealing ring moves back smooth and easy, does not occur that bite situation is normally, checks the force value in throwing, retreating chamber in the time overhauling sealing input and exit, and the force value in input chamber is 5.0Mpa, and the force value that exits chamber is that 0.00MPa is qualified.
2. a kind of on-line cleaning method of the on-line cleaning device that uses ball valve maintenance sealing according to claim 1, is characterized in that, described acidic cleaner is the one in hydrochloric acid, nitric acid, hydrofluoric acid, sulfamic acid, citric acid and EDTA.
3. a kind of on-line cleaning method of the on-line cleaning device that uses ball valve maintenance sealing according to claim 1, it is characterized in that, the salpeter solution that the concrete acid cleaning process of described acidic cleaner employing nitric acid is is 4.5wt% by concentration, clean, temperature is controlled at 35 DEG C, after nitric acid cleans, check that flushing outlet finishes pickling while no longer there is incrustation scale, impurity; Then select the acid high-efficient corrosion inhibitor of Lan-826; concentration is controlled at 2.5wt%; circulate 15 minutes; play the effect of protection ball valve maintenance sealing; select tertiary sodium phosphate passivator; concentration is controlled at 1wt%, and the effect of protection maintenance sealing metal face and the fouling time of prolongation incrustation scale are played in passivation 3 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110297778.XA CN102416387B (en) | 2011-09-27 | 2011-09-27 | On-line cleaning device and method for ball valve overhauling seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110297778.XA CN102416387B (en) | 2011-09-27 | 2011-09-27 | On-line cleaning device and method for ball valve overhauling seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102416387A CN102416387A (en) | 2012-04-18 |
| CN102416387B true CN102416387B (en) | 2014-07-23 |
Family
ID=45941177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110297778.XA Active CN102416387B (en) | 2011-09-27 | 2011-09-27 | On-line cleaning device and method for ball valve overhauling seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102416387B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016677A (en) * | 2019-04-25 | 2019-07-16 | 郑州长鑫科工贸有限公司 | A kind of high-efficient corrosion inhibition type agent prescription and its manufacturing method |
| CN113235100A (en) * | 2021-03-11 | 2021-08-10 | 中国科学院近代物理研究所 | Surface treatment method before oxygen-free copper brazing |
| CN114713555A (en) * | 2022-04-15 | 2022-07-08 | 空天合一(北京)空间科技有限公司 | Method for cleaning long-life high-reliability universal valve for spacecraft |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2302793A1 (en) * | 1975-03-06 | 1976-10-01 | Cleren & Cie Ets | Pressurised tank washing installation - uses programmer to control hot and cold water and detergent supply lines |
| EP0350017A1 (en) * | 1988-07-05 | 1990-01-10 | Apv Rosista Gmbh | Valve with a leak indicator |
| CN2695129Y (en) * | 2003-12-24 | 2005-04-27 | 王季豫 | Cold hot water jet cleaning machine |
| CN201181184Y (en) * | 2008-02-19 | 2009-01-14 | 孙成志 | Vehicle-mounted detachable multifunctional near-line cleaning apparatus |
| CN201891503U (en) * | 2010-12-03 | 2011-07-06 | 四川国际航空发动机维修有限公司 | Moving type airflow duct cleaning machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001264490A (en) * | 2000-03-15 | 2001-09-26 | Hitachi Ltd | Decontamination method and decontamination device of valve |
| WO2010085798A1 (en) * | 2009-01-26 | 2010-07-29 | Process Pigging Systems, Llc | Retractable seal ball valve |
-
2011
- 2011-09-27 CN CN201110297778.XA patent/CN102416387B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2302793A1 (en) * | 1975-03-06 | 1976-10-01 | Cleren & Cie Ets | Pressurised tank washing installation - uses programmer to control hot and cold water and detergent supply lines |
| EP0350017A1 (en) * | 1988-07-05 | 1990-01-10 | Apv Rosista Gmbh | Valve with a leak indicator |
| CN2695129Y (en) * | 2003-12-24 | 2005-04-27 | 王季豫 | Cold hot water jet cleaning machine |
| CN201181184Y (en) * | 2008-02-19 | 2009-01-14 | 孙成志 | Vehicle-mounted detachable multifunctional near-line cleaning apparatus |
| CN201891503U (en) * | 2010-12-03 | 2011-07-06 | 四川国际航空发动机维修有限公司 | Moving type airflow duct cleaning machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102416387A (en) | 2012-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101498004A (en) | Chemical scrubbing method for boiler | |
| CN206220235U (en) | A kind of integral intelligent pumping plant | |
| CN102416387B (en) | On-line cleaning device and method for ball valve overhauling seal | |
| CN110195464A (en) | A kind of flushing of drainage pipeline, examination and repair system and purging method, repair method | |
| CN102489480A (en) | Chemical cleaning process of oil system of large equipment | |
| CN104293531A (en) | Scale remover used for cleaning hot-blast stove and boiler and accessories thereof, and cleaning method thereof | |
| CN103075912A (en) | Method for cleaning floor heating pipes | |
| CN202263754U (en) | Oil field pipe de-blocking device | |
| CN112495953A (en) | Method for cleaning main steam pipeline of high-temperature reactor | |
| CN204491716U (en) | Two filtration recoil is from removing contamination water fetching device | |
| CN110790357B (en) | Discharge device for supercritical water oxidation system and control method thereof | |
| CN110081768B (en) | Descaling method for condenser of power plant | |
| CN108870087B (en) | Coal gas water seal rapid water replenishing and drainage cylinder online blockage clearing device | |
| CN110882975A (en) | Method for cleaning pipeline before production stop, inspection and maintenance of high-sulfur-content station | |
| CN101482379A (en) | Pipe flushing method for cooling circulating water system | |
| CN107142373A (en) | A kind of device and method for being used to eliminate continuous annealing furnace water quenching defect | |
| CN111058434A (en) | Self-elevating platform pile-punching monitoring device | |
| CN201572771U (en) | Shield machine grouting pipe cleaner | |
| CN106824882A (en) | The cleaning equipment and cleaning method of extra-supercritical unit high pressure extraction heat regenerative system | |
| CN104746551B (en) | Two filtration recoils are from removing contamination water fetching device and working method thereof | |
| CN105804696A (en) | Sewage re-injection main line alternate type scale removal technological method | |
| CN204341722U (en) | A kind of circulating water unloads acid buffering tank | |
| CN215506310U (en) | Hot area acid-base cleaning system for low-temperature methanol washing process | |
| CN202140629U (en) | Cleaning device for tiny drag slow shut check valve | |
| CN105201054A (en) | Drainage blowdown disposer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: BEIJING MING TOMBS STORAGE POWER PLANT OF NCGC Effective date: 20130502 Owner name: STATE GRID XINYUAN CO., LTD. STATE GRID XINYUAN HO Effective date: 20130502 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 102200 CHANGPING, BEIJING TO: 100000 DONGCHENG, BEIJING |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20130502 Address after: 100000 Beijing West Chang'an Avenue No. 86 Applicant after: State Grid Corporation of China Applicant after: State Grid Xinyuan Co., Ltd. Applicant after: State Grid Xinyuan Holdings Co., Ltd. Beijing Ming Tombs Energy Storage Power Plant Address before: 102200 Beijing city Changping District water village in Ming Dynasty Tombs of Beijing pumped storage power station Applicant before: Beijing Ming Tombs Storage Power Station of North China Grid Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |