CN103423534B - Leakage control device for ball valve telescopic joint of pump storage group - Google Patents
Leakage control device for ball valve telescopic joint of pump storage group Download PDFInfo
- Publication number
- CN103423534B CN103423534B CN201310368055.3A CN201310368055A CN103423534B CN 103423534 B CN103423534 B CN 103423534B CN 201310368055 A CN201310368055 A CN 201310368055A CN 103423534 B CN103423534 B CN 103423534B
- Authority
- CN
- China
- Prior art keywords
- runddichtringo
- seal ring
- sleeping
- loose collar
- combination
- 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
- 238000007142 ring opening reaction Methods 0.000 claims abstract description 9
- 239000004819 Drying adhesive Substances 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000007789 sealing Methods 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000012736 aqueous medium Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
Abstract
The invention discloses a kind of leakage control device for ball valve telescopic joint of pump storage group, sleeping U-shaped seal ring is provided with in the slip joint of ball valve downstream, combination O RunddichtringO is installed at the open slot position place of sleeping U-shaped seal ring, this combination O RunddichtringO is at least separated into two sections, connected by instant drying adhesive therebetween, the thickness of instant drying adhesive is less than the diameter of combination O RunddichtringO.The present invention can eliminate sleeping U-shaped seal ring cannot seal tight problem because slip joint own wt causes distortion, even if there is amount of deformation in sleeping U-shaped seal ring, make sleeping U-shaped seal ring mouth cannot with equipment tight seal, but due to the existence of combination O RunddichtringO, too can with equipment tight seal, can not gap be there is.Be subject to the effect of pipe interior water pressure between combination O RunddichtringO multistage, sleeping U-shaped seal ring opening slot by entering in the opening slot of sleeping U-shaped seal ring, can be expanded, playing sealing, sealing effect by aqueous medium equally.
Description
Technical field
The invention belongs to pumped storage technical field, be specifically related to a kind of leakage control device for ball valve telescopic joint of pump storage group.
Background technique
Pumped storage power station mostly is underground power house formula structure, the hydraulic turbine condition of configuration rated head and rated power, utilize aqueous medium to circulate between upper storage reservoir and lower storage reservoir through diversion tunnel, penstock, ball valve, ball valve downstream slip joint, spiral case, runner, draft tube etc., thus realize generating and the function of drawing water.Therefore, in whole diversion culvert system, play vital effect to the sealing of aqueous medium, leaking in a large number appears in any point equipment, all can cause water logging underground power house, cause very serious consequence.Wherein, ball valve and ball valve slip joint play and block the effect such as current, seal for pipe joints in unit process; and ball valve can move water closedown when unit breaks down; block penstock current; play the important function of protection personnel and device security; slip joint inside, ball valve downstream multiple-sealed, for preventing the water of penstock and spiral case from leaking outside, plays extremely important effect.
The O type circle that traditional ball valve downstream slip joint inner sealing comprises twice φ 10mm with together with the sleeping U-shaped seal ring of φ 2180mm.Traditional equipment installs sleeping U-shaped seal ring, be then the Stamping Steel Ribbon of simple similar letter " U ", material is nitrile butadiene rubber or other materials, different according to the opening angle of sleeping U-shaped seal ring, and derive multiple sealed product structure, there is good stretchability simultaneously.According to on-the-spot actual, due to features such as equipment head are high, pressure is large, after traditional sleeping U-shaped seal ring is arranged on ball valve slip joint, cannot seal tight, occur leaking in a large number.
Through finding slip joint working condition and original sleeping U-shaped ring structure analysis, traditional ball valve slip joint crouches U-shaped seal ring when expanding outwardly effect by pipeline inside water pressure, also be subject to the compression of slip joint loose collar self gravitation, sleeping U-shaped seal ring is caused to be affected by gravity more obvious in the position of peripheral top, amount of deformation is larger, position bottom circumference is less by gravity, and amount of deformation is very little.Due to the different distortion amount of sleeping U-shaped seal ring, cause the U-shaped mouth of sleeping U-shaped seal ring when opening, it expands angle and size also changes thereupon, cannot open completely or deform, and causes occurring leaking in a large number, cannot meet unit hydraulic demand.Through on-the-spot multiple maintenance measure, as changed the sealing of ball valve slip joint, readjusting the Spielpassung of loose collar, adding the clamping torque of king-bolt, smear sealer etc., be all not improved.
Summary of the invention
The object of this invention is to provide a kind of leakage protection device being applicable to pump-storage generator ball valve downstream slip joint, the drawback that sleeping U-shaped seal ring exists can be made up.
The solution of the present invention: a kind of leakage control device for ball valve telescopic joint of pump storage group, be positioned at the slip joint position of ball valve downstream by pipe flange and transition tube joint, fit to being connected to loose collar three successively with pipe flange, loose collar two and loose collar one, and fixed by bolt-through; Between pipe flange and loose collar three, be provided with O RunddichtringO, between loose collar three and loose collar two, be provided with O RunddichtringO; Transition tube to be positioned at inside loose collar two and loose collar one and with loose collar three Spielpassung, sleeping U-shaped seal ring is provided with between loose collar two and loose collar one, combination O RunddichtringO is installed at the open slot position place of sleeping U-shaped seal ring, this combination O RunddichtringO is at least separated into two sections, connected by instant drying adhesive therebetween, the thickness of instant drying adhesive is less than the diameter of combination O RunddichtringO.
Combination O RunddichtringO is set in the inside of sleeping U-shaped seal ring opening slot.Or combination O RunddichtringO is positioned at the notch of sleeping U-shaped seal ring opening slot, and the diameter of combination O RunddichtringO is greater than the width of sleeping U-shaped seal ring opening slot.
Combination O RunddichtringO is by four sections of arc seal ring composite structures, and the diameter of combination O RunddichtringO is 6mm, and Spielpassung between adjacent arc seal ring, gap width is 10mm.
Described transition tube is conical pipe, is set with wedge shape hold-down ring outside its port, and described wedge shape hold-down ring is positioned at inside loose collar two and loose collar one, and with loose collar three Spielpassung.
Beneficial effect of the present invention:
1, in sleeping U-shaped seal ring opening slot, add the combination O RunddichtringO of φ 6mm, sleeping U-shaped seal ring can be eliminated and cannot seal tight problem because slip joint own wt causes distortion, even if there is amount of deformation in sleeping U-shaped seal ring, make sleeping U-shaped seal ring mouth cannot with equipment tight seal, but due to the existence of combination O RunddichtringO, too can with equipment tight seal, can not gap be there is.
2, the combination O RunddichtringO newly added is divided into four sections, every section of isolation 10mm, after being in place, be subject to the effect of pipe interior water pressure, aqueous medium can enter in the opening slot of sleeping U-shaped seal ring by the 10mm interval of combination O RunddichtringO equally, sleeping U-shaped seal ring opening slot is expanded, plays sealing, sealing effect.
Accompanying drawing explanation
Fig. 1 is ball valve and the total view of downstream slip joint;
Fig. 2 is ball valve slip joint component diagram;
Fig. 3 is the partial enlargement structural representation of Fig. 2;
Fig. 4 is sleeping U-shaped seal ring and one of assembling schematic diagram combining O RunddichtringO;
Fig. 5 is sleeping U-shaped seal ring and the assembling schematic diagram two combining O RunddichtringO.
In figure, label 1 is ball valve, and 2 is ball valve downstream slip joint, 201 is flange, and 202 is loose collar one, and 203 is loose collar two, 204 is loose collar three, and 205 is nut, and 206 is bolt, 207 is transition tube, 208 is wedge shape hold-down ring, and 3 is pipe flange, and 4 is sleeping U-shaped seal ring, 5 is combination O RunddichtringO, and 6 and 7 is O RunddichtringO.
Embodiment
Embodiment 1: a kind of leakage control device for ball valve telescopic joint of pump storage group, and see Fig. 1, be the improvement made for the slip joint in ball valve 1 downstream, ball valve downstream slip joint 2 is docked by pipe flange 3 and transition tube 207 and arranged sealing configuration.From in Fig. 2 and Fig. 3, fit to being connected to loose collar 3 204 successively with pipe flange 3, loose collar 2 203 and loose collar 1, above four-layer structure runs through fixing by bolt 206, and bolt 206 two ends are separately installed with nut 205.Further, between pipe flange 3 and loose collar 3 204, be provided with O RunddichtringO 8, between loose collar 3 204 and loose collar 2 203, be provided with O RunddichtringO 7.In Fig. 2 and Fig. 3, transition tube 207 to be positioned at inside loose collar 2 203 and loose collar 1 and with loose collar 3 204 Spielpassung.Transition tube 207 is conical pipe, is set with wedge shape hold-down ring 208 outside its port, and described wedge shape hold-down ring 208 is positioned at the inner side of loose collar 2 203 and loose collar 1, and with loose collar 3 204 Spielpassung.Wedge shape hold-down ring 208 and retention gap d between loose collar 2 203 and loose collar 1.
Sleeping U-shaped seal ring 4 is provided with between loose collar 2 203 and loose collar 1, combination O RunddichtringO 5 is installed at the open slot position place of sleeping U-shaped seal ring 4, this combination O RunddichtringO 5 is separated into four sections of impartial arc seal rings, the diameter of combination O RunddichtringO 5 is 6mm, gap width between adjacent arc seal ring is 10mm, connected by instant drying adhesive between each arc seal ring, prevent from coming off.The thickness of instant drying adhesive is less than the diameter of combination O RunddichtringO.Thus hydraulic pressure can be made to act on sleeping U-shaped seal ring 4.Sleeping U-shaped seal ring 4 can with reference to figure 4 with the installation relation of combination O RunddichtringO 5, and combination O RunddichtringO 5 is set in the inside of sleeping U-shaped seal ring 4 opening slot, is expanded by the opening slot of sleeping U-shaped seal ring 4, plays sealing, sealing effect.By installing rear test, the sealing configuration of this newtype, when there is distortion in the upper end of sleeping U-shaped seal ring 4, the opening slot that combination O RunddichtringO 5 can enter sleeping U-shaped seal ring 4 under hydraulic pressure effect is inner, thus sleeping U-shaped seal ring 4 is opened, the equipment that meets completely runs needs, and water leakage phenomenon disappears, save a large amount of maintenance material resources and financial resources, improve stable equipment operation.
Embodiment 2: see Fig. 5, content is substantially the same manner as Example 1, and something in common does not repeat, unlike: combination O RunddichtringO 5 is positioned at the notch of sleeping U-shaped seal ring 4 opening slot, further, the diameter combining O RunddichtringO 5 is greater than the width of sleeping U-shaped seal ring 4 opening slot.Under hydraulic pressure effect, the opening slot that combination O RunddichtringO 5 can be pressed into sleeping U-shaped seal ring 4 is inner, keeps sleeping U-shaped seal ring 4 to deform.Thus can eliminate sleeping U-shaped seal ring 4 due to slip joint own wt cause distortion and tight problem cannot be sealed, even if there is amount of deformation in sleeping U-shaped seal ring 4, make sleeping U-shaped seal ring 4 opening slot cannot with equipment tight seal, but due to the existence of combination O RunddichtringO 5, too can with equipment tight seal, can not gap be there is.
Claims (3)
1. a leakage control device for ball valve telescopic joint of pump storage group, be positioned at the slip joint position of ball valve downstream tube flange and transition tube joint, it is characterized in that: fit to being connected to loose collar three successively with pipe flange, loose collar two and loose collar one, and fixed by bolt-through; Between pipe flange and loose collar three, be provided with O RunddichtringO, between loose collar three and loose collar two, be provided with O RunddichtringO; Transition tube to be positioned at inside loose collar two and loose collar one and with loose collar three Spielpassung, sleeping U-shaped seal ring is provided with between loose collar two and loose collar one, combination O RunddichtringO is installed at the open slot position place of sleeping U-shaped seal ring, this combination O RunddichtringO is at least separated into two sections, connected by instant drying adhesive therebetween, the thickness of instant drying adhesive is less than the diameter of combination O RunddichtringO; Described transition tube is conical pipe, is set with wedge shape hold-down ring outside its port, and described wedge shape hold-down ring is positioned at inside loose collar two and loose collar one, and with loose collar three Spielpassung; Combination O RunddichtringO is positioned at the notch of sleeping U-shaped seal ring opening slot, and the diameter of combination O RunddichtringO is greater than the width of sleeping U-shaped seal ring opening slot.
2. leakage control device for ball valve telescopic joint of pump storage group according to claim 1, is characterized in that: combination O RunddichtringO is set in the inside of sleeping U-shaped seal ring opening slot.
3. leakage control device for ball valve telescopic joint of pump storage group according to claim 1, it is characterized in that: combination O RunddichtringO is by four sections of arc seal ring composite structures, the diameter of combination O RunddichtringO is 6mm, and Spielpassung between adjacent arc seal ring, gap width is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310368055.3A CN103423534B (en) | 2013-08-22 | 2013-08-22 | Leakage control device for ball valve telescopic joint of pump storage group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310368055.3A CN103423534B (en) | 2013-08-22 | 2013-08-22 | Leakage control device for ball valve telescopic joint of pump storage group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103423534A CN103423534A (en) | 2013-12-04 |
| CN103423534B true CN103423534B (en) | 2015-12-02 |
Family
ID=49648694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310368055.3A Active CN103423534B (en) | 2013-08-22 | 2013-08-22 | Leakage control device for ball valve telescopic joint of pump storage group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103423534B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197132A (en) * | 2014-09-05 | 2014-12-10 | 河海大学常州校区 | Sealing structure of rigid pipes and transparent pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4126708A1 (en) * | 1991-08-13 | 1993-02-25 | Weinhold Karl | Plastics or plastics coated pipe coupling - has cage forming groove to hold even rigid inflexible sealing rings |
| EP0594105A1 (en) * | 1992-10-19 | 1994-04-27 | WILO GmbH | Flanged pipe coupling |
| DE9320282U1 (en) * | 1993-12-17 | 1994-05-11 | M A G A Maschinen Geraete Appa | Pneumatic tube system |
| CN200979044Y (en) * | 2006-12-08 | 2007-11-21 | 陆平 | Pipeline extension joint |
| CN202868161U (en) * | 2012-11-15 | 2013-04-10 | 湖南云箭集团有限公司 | Double-pressure-ring expansion joint of water inlet tube of water turbine |
| CN203463831U (en) * | 2013-08-22 | 2014-03-05 | 国家电网公司 | Telescopic joint anti-leaking device of water pumping energy-accumulating unit ball valve |
-
2013
- 2013-08-22 CN CN201310368055.3A patent/CN103423534B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4126708A1 (en) * | 1991-08-13 | 1993-02-25 | Weinhold Karl | Plastics or plastics coated pipe coupling - has cage forming groove to hold even rigid inflexible sealing rings |
| EP0594105A1 (en) * | 1992-10-19 | 1994-04-27 | WILO GmbH | Flanged pipe coupling |
| DE9320282U1 (en) * | 1993-12-17 | 1994-05-11 | M A G A Maschinen Geraete Appa | Pneumatic tube system |
| CN200979044Y (en) * | 2006-12-08 | 2007-11-21 | 陆平 | Pipeline extension joint |
| CN202868161U (en) * | 2012-11-15 | 2013-04-10 | 湖南云箭集团有限公司 | Double-pressure-ring expansion joint of water inlet tube of water turbine |
| CN203463831U (en) * | 2013-08-22 | 2014-03-05 | 国家电网公司 | Telescopic joint anti-leaking device of water pumping energy-accumulating unit ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103423534A (en) | 2013-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203856559U (en) | Segmented exhaust pipe interface sealing structure | |
| CN103672943B (en) | Air preheater float tube sealed elastic sealing shroud device | |
| CN109237193A (en) | The no-welding expanding blocking device of pressure test of snap ring-type | |
| CN203442472U (en) | Main steam trap | |
| CN103423534B (en) | Leakage control device for ball valve telescopic joint of pump storage group | |
| CN203463831U (en) | Telescopic joint anti-leaking device of water pumping energy-accumulating unit ball valve | |
| CN204594640U (en) | A kind of pipeline pressure measurement block head | |
| CN203224177U (en) | Sleeve sealing structure for cabin segment | |
| CN208519364U (en) | A kind of flange assembled heavy caliber high pressure assembling pipe joint | |
| CN210370805U (en) | Take strenghthened type lamination formula sealing device of C type circle | |
| CN203856441U (en) | Under-pressure leakage blocking device applicable to petroleum and natural gas wellhead and conveying pipeline | |
| CN203836197U (en) | Sealing ring with openings | |
| CN203441916U (en) | Direction adjustable oil bolt assembly | |
| CN207935625U (en) | A kind of blocking clamper | |
| CN206770866U (en) | A kind of plugging device for non-adherent flexible pipe bulge test | |
| CN203405312U (en) | Airtight test tool for injection machine solid plate casting | |
| CN203880286U (en) | Labyrinth rubber tube core | |
| CN207814076U (en) | Project the radial type bindiny mechanism of oil cylinder cylinder cap and fluid pressure line | |
| CN205908737U (en) | Take radial water compacting seal of tension steel ring | |
| CN201679958U (en) | Sealing and connecting structure of hydraulic cylinder sleeve and cylinder cover | |
| CN204026036U (en) | The anchor ear that the leak stopping of a kind of gas pipe line straight tube is used | |
| CN105649852A (en) | Telescopic joint structure for water turbine | |
| CN203376301U (en) | Target board device | |
| CN202442632U (en) | Connecting structure between heat exchange tube head and tube plates in waste heat boiler | |
| CN203948829U (en) | A kind of pressure sealing flange seal clip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |