CN104620027A - Passive shutdown sealing device for a system of shaft seals of a primary motorised pump unit - Google Patents
Passive shutdown sealing device for a system of shaft seals of a primary motorised pump unit Download PDFInfo
- Publication number
- CN104620027A CN104620027A CN201380033642.5A CN201380033642A CN104620027A CN 104620027 A CN104620027 A CN 104620027A CN 201380033642 A CN201380033642 A CN 201380033642A CN 104620027 A CN104620027 A CN 104620027A
- Authority
- CN
- China
- Prior art keywords
- seal ring
- sealing system
- reactor coolant
- coolant pump
- temperature
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/14—Shaft sealings operative only when pump is inoperative
- F04D29/146—Shaft sealings operative only when pump is inoperative especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/08—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being radioactive
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
- F16J15/3212—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings with metal springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing Devices (AREA)
Abstract
The present invention concerns a passive shutdown sealing device (20) for a primary motorised pump unit comprising: a split sealing ring (23) having an inactivated position and an activated position; a separator (27) made from a fusible material capable of changing state from a temperature threshold, called state change threshold, said separator (27) holding said split sealing ring (23) in the inactivated position of same when the temperature of the device (20) is lower than said state change temperature threshold; said device being characterised in that it comprises circular elastic means (22) positioned around the split sealing ring (23), said elastic means (22) being designed to bring said sealing ring (23) into the activated position of same when the temperature is greater than or equal to the state change threshold value of said separator (27).
Description
Technical field
Field of the present invention is the field of the reactor coolant pump group for core PWR (PWR).
The present invention more specifically relates to passive closedown seal arrangement (SSD), and it can control the reactor coolant leakage that the inefficacy owing to being present in the sealing system in reactor coolant pump group causes.
Background technique
Develop in a new generation's core PWR and closed the inefficacy of sealing system with unexpected situation that seal arrangement (SSD) carrys out processing reaction reactor coolant pump group, be called that station is interrupted.
Therefore, in this accident situation and after reactor coolant pump stops, closing seal arrangement and must can control and stop the reactor coolant leakage that the inefficacy due to reactor coolant pump group sealing system causes.
Normally, and if such device excites (such as pressurized nitrogen loop) by auxiliary source the cooling source loss of reactor coolant group pump, triggers the information controlled by reactor instruments and exports control.
Passive cut out seal arrangement has developed into and has not needed auxiliary spark excitation system, and in order to eliminate the necessity using excitation source, the trigger message output controlled from reactor instruments is unnecessary.So a kind of passive closedown seal arrangement is disclosed in file WO2010/068615.
But disclosed seal arrangement is a kind of device of heaviness and its installation relative complex in the sealing system of reactor coolant pump group.
Summary of the invention
In the text, the present invention propose to improve a kind of like this seal arrangement with reduce it size and therefore reduce it service reactor coolant pump group axle sealing system on installation.
In order to reach this object, the invention discloses a kind of passive closedown seal arrangement for reactor coolant pump axle sealing system, comprising:
-there is the division seal ring of passive position and moving position;
-the separator be made up of fusible material, it can change state more than temperature extremes, this temperature extremes is called that state changes the limit, and when the temperature of device changes temperature lower than ultimate state, described separator makes described division seal ring remain on its passive position.
The feature of described device is that it is included in the round and elastic device around division seal ring, and when the limit that temperature is more than or equal to described separator changes status values, described elastic device is applicable to the moving position described seal ring being brought into it.
Statement " change state " implication is that the mechanical property of fusible material changes.
According to the present invention, when not needing auxiliary spark excitation source, the reactor coolant leakage stopping the inefficacy due to reactor coolant pump group sealing system to cause is possible.
According to the present invention, the design of this device makes the simple installation in the architecture of the reactor coolant pump used.
Have according to device of the present invention, make by controlling device from-excitation temperature, also become possibility more precisely by the formation changing fusible element according to this device of operation constraint adjustment of the nuclear reactor of every type.
Also the first temperature extremes that materials behavior changes and the excitation temperature limit that may be different from or be greater than ultimate state change temperature of closing seal arrangement can be limited, from the first temperature extremes, fusible material separator changes state, in other words, its mechanical property changes, from the excitation temperature limit, separator no longer can resist the power applied by elastic device, therefore seal ring is brought into its moving position.
Also one or several following characteristics can be had individually or in the mode of any technically possible combination according to passive closedown seal arrangement of the present invention:
-when temperature be more than or equal to device excite limiting figure time, described elastic device brings described seal ring into its moving position, excites limiting temperature to be greater than ultimate state and changes temperature;
-described device is suitable for the part forming axle sealing system in the reactor coolant pump group in service;
-described division seal ring is made up of polymer, the temperature of tolerance more than 300 DEG C;
-described division seal ring is made up of polyether-ether-ketone or the synthetic of polyether-ether-ketone parent that comprises containing glass or carbon fiber;
-described round and elastic device applies pressure on described division seal ring;
-described division seal ring comprises circumferential annular groove, and it can keep described round and elastic device;
-described the separator be made up of fusible material can mechanical resistance up to 80 DEG C to 260 DEG C, the power that applied by elastic device of the temperature extremes that preferably equals 150 DEG C.
-described separator and division seal ring are made up of single-piece;
-described separator is by independent of division seal ring and being formed by the part that connection set adds on the opening of seal ring.
Another object of the present invention is to reactor coolant pump group, comprising:
-sealing system, the leakage paths being suitable for being formed along the axle along reactor coolant pump group causes controlled leak;
-according to passive closedown seal arrangement of the present invention, be suitable for the described leakage paths of closing described sealing system when described sealing system lost efficacy and described seal ring is brought into its moving position by described round and elastic device at least partly, to cause controlled leak.
Accompanying drawing explanation
Other Characteristics and advantages of the present invention will become clear after reading as just information but anything but restrictive description given below, and with reference to the following drawings:
Fig. 1 illustrates the partial view of the sealing system of reactor coolant pump group;
Fig. 2 illustrates the sectional view according to passive shutoff device of the present invention, is attached to the sealing system of the reactor coolant pump group shown in Fig. 1 part in its position of rest;
Fig. 3 illustrates the sectional view according to passive shutoff device of the present invention, is attached to the sealing system of the reactor coolant pump shown in Fig. 1 part at its moving position;
Fig. 4 illustrates the perspective view of the seal ring according to shutoff device of the present invention;
Fig. 5 is the detailed view of division place of seal ring according to shutoff device of the present invention;
Fig. 6 is the detailed view of division place of the seal ring of the second embodiment according to shutoff device of the present invention.
In order to clearer, same or analogous parts adopt identical reference character in the accompanying drawings.
Embodiment
The coolant pump of PWR is centrifugal with vertical axis.The dynamic leakage tightness of axial outlet 10 (Fig. 1) is provided by the sealing system comprising three phases.
First stage is called the first sealing.First sealing with reference to J1, is seal with the hydrostatics of controlled leak.In normal operation, leakage flow is formed along axle 10, is represented by arrow F1.
In fortuitous event, raise quickly at the coolant temperature of the ingress of the first sealing so that reach the numerical value close to reactor coolant loop temperature, namely about 280 DEG C.In this temperature, the performance degradation of the first sealing, increasing very fast can more than 10m
3leakage flow hourly.Passive closedown seal arrangement (SSD) does not adopt excitation source with being intended to stop leakage flow F1 in the first sealing downstream in this case.
Fig. 1 be explicitly shown in the first sealing J1 and be positioned at the first sealing upstream the second sealing (with reference to J2) between the leakage paths F1 along axle 10.
Advantageously, SSD device 20 according to the present invention is positioned on leakage paths F1, and more accurately in the region with reference to Z representative, makes the leakage flow that can stop under accident situation along axle 10.
Fig. 2 more specifically illustrates under the normal operating conditions of reactor coolant pump group, in other words when the temperature of leakage flow is lower than preestablished limit numerical value, according to the sectional view of seal arrangement 20 of the present invention.
In addition, Fig. 3 illustrates the moving position of seal arrangement at it, the sectional view in other words under the accidental operation condition of reactor coolant pump group.
Cut out seal arrangement 20 according to the present invention comprises:
-division the seal ring 23 that arranges with one heart around the axle 10 of reactor coolant pump group;
-be suitable for the elastic device 22 that circumference applies force to the compression of division seal ring 23;
-the separator 27 that illustrates in figures 4 and 5, is made up of fusible material, as long as the temperature of device remains on after a while by below the temperature extremes that limits, this fusible material is just suitable for keeping described division seal ring in its passive position or position of rest.
The first contact ring 24 formed between the sleeve 15 of the first sealing and division seal ring 23 also can be included according to closedown seal arrangement 20 of the present invention, and the supporting part contacting the floating member that second contact ring 26, second contact ring of locating can seal with first with division seal ring 23 contacts.
Such as, the first contact ring 24 is made up of steel or nickel alloy.Second contact ring 26 has the chromium plating face contacted with seal ring 23.The chrome plating coating in the face contacted with seal ring 23 reduces seal ring 23 and second and encloses friction factor between 26.If pump lost efficacy (SBO) due to power supply and stopped, shutoff device 20 can be increased by the temperature before pump shaft stops completely and trigger.Therefore, such chrome plating coating will prevent the damage of the second seal ring 26.
Seal ring 23 has the circumferential groove 25 around its outer periphery, and its shape and size are suitable for keeping elastic device 22.
As shown in figs. 1 and 4, dividing seal ring 23 adopts fusible separator 27 to remain on its passive position.Fusible separator 27 is made up of polymer material, advantageously according to its degenerate temperature and mechanical property loss selection.
The polymer of fusible separator 27 is selected and its size is selected according to required degenerate temperature.Advantageously, the feature of separator 27 make up to 80 DEG C to 260 DEG C between and advantageously equal the temperature extremes of 150 DEG C time, the power applied by elastic device 22 can be resisted.
In the embodiment shown in Fig. 2 to 5, in the normal running of reactor coolant pump group, fusible separator 27 is forms of beam, and the two ends dividing seal ring 23 can be kept in disengaging configuration (passive position).
Therefore, in normal operation condition (Fig. 2), seal ring 23 maintenance group and leakage paths F1 isolate.Division seal ring 23 is locked in this position by fusible separator 27.
Under emergency conditions (Fig. 3), the temperature increase of leakage flow has increases temperature close to shutoff device 20, the particularly effect of the temperature of fusible separator 27.When leakage flow temperature reaches the limiting figure being called the change of state limit (characteristic according to fusible separator 27 limits in advance), separator is degenerated immediately or is progressively degenerated, and therefore no longer has enough mechanical forces to resist the circumferential compressive force produced by elastic device 22.The decline of the mechanical property loss of fusible separator and particularly bending coefficient occurs in temperature when being more than or equal to the glass transformation temperature of the material manufacturing fusible separator 27.
Depend on the characteristic of used fusible material, first ultimate state that also can limit material changes temperature, from this temperature, the state that fusible separator 27 starts it changes, in other words, at this moment its mechanical property changes, and limit the limit activationary temperature of closing seal arrangement, from this temperature, fusible separator 27 collapses, because it no longer can resist the power that elastic device 22 applies, therefore seal ring 23 is brought into its moving position.
Therefore, in a first embodiment, device 20 is threaded off (ultimate state corresponding to over fusible separator 27 changes), is activated with timer.In the embodiment of this change, the loss of mechanical property almost occurs immediately.
Second change embodiment in, device due to go beyond the limit of state change temperature be activated and device 20 be activated between there is delay.In this change, the loss of mechanical property progressively occurs and causes fusible separator 27 not changing the high temperature collapse of temperature in the same time and/or than ultimate state.
Fusible separator 27 preferably has recess 28 or the thinning region of material, can guide flexing and the distortion of fusible separator 27.Such recess 28 can such as guiding separator along the axis of seal ring 23 or radial deformation.
An embodiment according to Fig. 5, recess 28 is processed at the center of fusible separator 27 and end.
Near fusible separator, provide free space avoid and hinder the distortion of separator to be necessary, to make to be beneficial to distortion by the flexing of fusible separator 27 and therefore shutoff device 20 activates satisfactorily.Such as, when fusible separator 27 radial deformation, the recess (not shown) of this space on the sleeve pipe 11 of the first sealing, towards the circumferential position of fusible separator 27.
Because seal ring 23 is no longer in its position of rest, around the diameter of the power change seal ring 23 that seal ring 23 is applied by elastic device 22, therefore seal ring is contacted by the axle of pressing with rotor 10.
Therefore, under emergency conditions, due to elastic device 22 apply peripheral force in conjunction with separator mechanical property loss no longer perform separation function, seal ring 23 stops leakage paths F1.
Secondly, the pressure leaked additionally by seal arrangement 20 upstream of moving position increases the High Pressure stop caused.
According to an exemplary embodiment, the seal ring 23 of shutoff device 20 is made up of the polymer material of withstand high temperatures (that is, higher than 300 DEG C), such as polyether-ether-ketone (PEEK) or comprise the PEEK synthetic of glass or carbon fiber.The use of such material can cause seal ring to change over rubbery state when high temperature, and under this state, it can be out of shape the geometrical shape of carrying out matched environment and therefore have better airtight quality.In this embodiment, the characteristic of the characteristic of fusible separator 27 and the main body of seal ring 23 is identical and they are preferably made up of single-piece.
The second embodiment according to Fig. 6, fusible separator 127 is formed by the independently part (that is, non-single-piece) of seal ring 123, adds on the opening of seal ring 123.Such structure means that fusible separator 127 can be made up of the material being different from for the manufacture of seal ring 123, and the loss of mechanical property enough makes device be triggered and activates from given temperature extremes.
Therefore, such as, fusible separator 127 can be made up of the PEEK comprising carbon fiber and seal ring 123 can be made up of graphite.
This second embodiment can simplify the design of seal ring 123 and can form crossover to increase the validity of sealing at circle 123 opening.Fusible separator 127 can use diverse ways to be assembled on seal ring 123; Preferably, this assembling is tenon joint type.
Claims (11)
1. the passive closedown seal arrangement (20) for reactor coolant pump axle sealing system, it is characterized in that, it comprises:
-there is the division seal ring (23,123) of passive position and moving position;
-the separator (27 be made up of fusible material, 127), it can be called that state changes the above change state of temperature extremes of the limit, when the temperature of device (20) changes temperature lower than ultimate state, described separator (27,127) described division seal ring (23,123) is remained on its passive position;
The feature of described device is that it is included in division seal ring (23,123) the round and elastic device (22) around, when described temperature is more than or equal to described separator (27,127) when the limit changes status values, described seal ring (23,123) can be brought into its moving position by described elastic device (22).
2. the passive closedown seal arrangement (20) for reactor coolant pump axle sealing system as described in aforementioned claim, it is characterized in that, when described temperature is more than or equal to the numerical value of the activity thresholds of described device (20), described activity thresholds temperature is greater than ultimate state and changes temperature, described elastic device brings described division seal ring (23,123) into its moving position.
3. the passive closedown seal arrangement (20) for reactor coolant pump axle sealing system as claimed in any preceding claim, it is characterized in that, described device can form a part for the axle sealing system of the reactor coolant pump group in use.
4. the passive closedown seal arrangement (20) for reactor coolant pump axle sealing system as claimed in any preceding claim, is characterized in that, described division seal ring is made up more than the polymer of 300 DEG C of temperature of opposing.
5. the passive closedown seal arrangement (20) for reactor coolant pump axle sealing system as claimed in any preceding claim, it is characterized in that, described division seal ring is made up of polyether-ether-ketone or the synthetic of polyether-ether-ketone parent that comprises containing glass or carbon fiber.
6. the passive closedown seal arrangement (20) for reactor coolant pump axle sealing system as claimed in any preceding claim, it is characterized in that, described round and elastic device (22) applies pressure on described division seal ring (23).
7. the passive closedown seal arrangement (20) for reactor coolant pump axle sealing system as claimed in any preceding claim, it is characterized in that, described seal ring (23,123) comprises the circumferential annular groove (25) that can keep described round and elastic device (22).
8. the passive closedown seal arrangement (20) for reactor coolant pump axle sealing system as claimed in any preceding claim, it is characterized in that, the described separator (27,127) be made up of fusible material can mechanically resist up to 80 DEG C between 260 DEG C, the power that applied by elastic device of the limiting temperature that preferably equals 150 DEG C.
9. the passive closedown seal arrangement (20) for reactor coolant pump axle sealing system as claimed in any preceding claim, is characterized in that, described separator (27) and division seal ring (23) are made for single-piece.
10. the passive closedown seal arrangement (20) for reactor coolant pump axle sealing system as described in any one of claim 1-8, it is characterized in that, described separator (127) by independent of division seal ring (123) and the part of being added to by connection set on the opening of seal ring (123) formed.
11. reactor coolant pump groups, it is characterized in that, it comprises:
-the leakage paths that can be formed along the axle along reactor coolant pump group causes the sealing system of controlled leak;
-passive closedown seal arrangement (20) according to aforementioned arbitrary claim, lost efficacy when described sealing system and be activated when described seal ring when causing controlled leak, passive cut out seal arrangement can cut out the described leakage paths of described sealing system at least partly.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1256005 | 2012-06-25 | ||
| FR1256005A FR2992392B1 (en) | 2012-06-25 | 2012-06-25 | PASSIVE STOP SEALING DEVICE FOR SHAFT JOINT SYSTEM OF PRIMARY MOTOR PUMP GROUP |
| PCT/FR2013/051473 WO2014001702A1 (en) | 2012-06-25 | 2013-06-25 | Passive shutdown sealing device for a system of shaft seals of a primary motorised pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104620027A true CN104620027A (en) | 2015-05-13 |
Family
ID=46785670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380033642.5A Pending CN104620027A (en) | 2012-06-25 | 2013-06-25 | Passive shutdown sealing device for a system of shaft seals of a primary motorised pump unit |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US20150192142A1 (en) |
| EP (1) | EP2864676A1 (en) |
| JP (1) | JP2015528896A (en) |
| KR (1) | KR20150032300A (en) |
| CN (1) | CN104620027A (en) |
| BR (1) | BR112014032566A2 (en) |
| CA (1) | CA2877212A1 (en) |
| FR (1) | FR2992392B1 (en) |
| IN (1) | IN2014DN11210A (en) |
| RU (1) | RU2015102015A (en) |
| WO (1) | WO2014001702A1 (en) |
| ZA (1) | ZA201409510B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106463186A (en) * | 2014-05-14 | 2017-02-22 | 韩国水力原子力株式会社 | Passive nitrogen injecting device for nuclear reactor coolant pump |
| CN107100882A (en) * | 2017-05-16 | 2017-08-29 | 中广核工程有限公司 | Nuclear reactor coolant pump and its passive parking sealing device |
| CN108368939A (en) * | 2015-11-30 | 2018-08-03 | 瓦锡兰斯万霍有限公司 | Static shaft sealer |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6021674B2 (en) * | 2012-09-28 | 2016-11-09 | 三菱重工業株式会社 | Shaft seal structure and primary coolant circulation pump |
| CN105240309B (en) * | 2014-11-19 | 2017-11-17 | 中广核工程有限公司 | Nuclear reactor coolant pump and its passive parking seal assembly |
| DE202015100048U1 (en) * | 2015-01-08 | 2016-04-11 | Krones Ag | seal |
| CN104976150B (en) * | 2015-07-16 | 2017-11-17 | 中广核工程有限公司 | Nuclear reactor coolant pump and its passive parking sealing device |
| JP6764381B2 (en) * | 2017-08-24 | 2020-09-30 | 三菱重工業株式会社 | Shaft seal structure and primary coolant circulation pump |
| JP2019173889A (en) * | 2018-03-29 | 2019-10-10 | 三菱重工業株式会社 | Multistage shaft seal device and rotary machine |
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| US4105040A (en) * | 1977-06-27 | 1978-08-08 | Chester Arnold M | Temperature responsive valve seal |
| DE19653580A1 (en) * | 1996-12-20 | 1998-06-25 | Wolf Gmbh Richard | Seal for shaft driving medical equipment |
| CN2674209Y (en) * | 2003-12-24 | 2005-01-26 | 天津渤海化工有限责任公司天津碱厂 | Cylinder sealing packing device for compressor |
| GB2417298A (en) * | 2004-08-21 | 2006-02-22 | Alstom Technology Ltd | A spring-urged face seal |
| CN1898489A (en) * | 2003-12-22 | 2007-01-17 | E.I.内穆尔杜邦公司 | Multi-layered seal structure |
| CN102239352A (en) * | 2008-12-10 | 2011-11-09 | 西屋电气有限责任公司 | Thermally activated shutdown seals for rotatable shafts |
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| US5171024A (en) * | 1988-05-23 | 1992-12-15 | Westinghouse Electric Corp. | Reactor coolant pump shaft seal utilizing shape memory metal |
| JP3440777B2 (en) * | 1997-09-10 | 2003-08-25 | 株式会社日立製作所 | Segment type shaft sealing device and drain pump provided with the same |
| JPH11280910A (en) * | 1998-03-30 | 1999-10-15 | Senshin Zairyo Riyo Gas Generator Kenkyusho:Kk | Cylindrical surface seal device |
| US20030057655A1 (en) * | 2001-09-24 | 2003-03-27 | Siemens Westinghouse Power Corporation | Environmentally-reactive seal and associated method |
| US20070172367A1 (en) * | 2006-01-26 | 2007-07-26 | Janocko David J | Flow restricting devices in pumps |
| JP2010265995A (en) * | 2009-05-15 | 2010-11-25 | Nok Corp | Sealing device |
| US8690534B1 (en) * | 2009-06-08 | 2014-04-08 | Curtiss-Wright Electro-Mechanical Corporation | Backup seals in rotary pumps |
| FR2986300B1 (en) * | 2012-02-01 | 2014-03-07 | Jeumont Systemes De Pompes Et De Mecanismes | PASSIVE STOP SEALING DEVICE FOR SHAFT JOINT SYSTEM OF PRIMARY MOTOR PUMP GROUP |
| US9206812B2 (en) * | 2013-03-13 | 2015-12-08 | Westinghouse Electric Company Llc | Pump seal with thermal retracting actuator |
| US9206791B2 (en) * | 2013-03-13 | 2015-12-08 | Westinghouse Electric Company Llc | Pump seal with thermal retracting actuator |
| US9217441B2 (en) * | 2013-08-20 | 2015-12-22 | Westinghouse Electric Company Llc | Pump seal with thermal retracting actuator |
-
2012
- 2012-06-25 FR FR1256005A patent/FR2992392B1/en not_active Expired - Fee Related
-
2013
- 2013-06-25 CN CN201380033642.5A patent/CN104620027A/en active Pending
- 2013-06-25 JP JP2015517834A patent/JP2015528896A/en active Pending
- 2013-06-25 US US14/409,836 patent/US20150192142A1/en not_active Abandoned
- 2013-06-25 KR KR20157001350A patent/KR20150032300A/en not_active Application Discontinuation
- 2013-06-25 BR BR112014032566A patent/BR112014032566A2/en not_active IP Right Cessation
- 2013-06-25 WO PCT/FR2013/051473 patent/WO2014001702A1/en active Application Filing
- 2013-06-25 RU RU2015102015A patent/RU2015102015A/en not_active Application Discontinuation
- 2013-06-25 CA CA2877212A patent/CA2877212A1/en not_active Abandoned
- 2013-06-25 EP EP13744618.3A patent/EP2864676A1/en not_active Withdrawn
-
2014
- 2014-12-23 ZA ZA2014/09510A patent/ZA201409510B/en unknown
- 2014-12-30 IN IN11210DEN2014 patent/IN2014DN11210A/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4105040A (en) * | 1977-06-27 | 1978-08-08 | Chester Arnold M | Temperature responsive valve seal |
| DE19653580A1 (en) * | 1996-12-20 | 1998-06-25 | Wolf Gmbh Richard | Seal for shaft driving medical equipment |
| CN1898489A (en) * | 2003-12-22 | 2007-01-17 | E.I.内穆尔杜邦公司 | Multi-layered seal structure |
| CN2674209Y (en) * | 2003-12-24 | 2005-01-26 | 天津渤海化工有限责任公司天津碱厂 | Cylinder sealing packing device for compressor |
| GB2417298A (en) * | 2004-08-21 | 2006-02-22 | Alstom Technology Ltd | A spring-urged face seal |
| CN102239352A (en) * | 2008-12-10 | 2011-11-09 | 西屋电气有限责任公司 | Thermally activated shutdown seals for rotatable shafts |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106463186A (en) * | 2014-05-14 | 2017-02-22 | 韩国水力原子力株式会社 | Passive nitrogen injecting device for nuclear reactor coolant pump |
| CN106463186B (en) * | 2014-05-14 | 2018-04-10 | 韩国水力原子力株式会社 | The passive-type nitrogen injection device of reactor coolant pump |
| CN108368939A (en) * | 2015-11-30 | 2018-08-03 | 瓦锡兰斯万霍有限公司 | Static shaft sealer |
| CN108368939B (en) * | 2015-11-30 | 2020-12-04 | 瓦锡兰斯万霍有限公司 | Static shaft sealing device |
| CN107100882A (en) * | 2017-05-16 | 2017-08-29 | 中广核工程有限公司 | Nuclear reactor coolant pump and its passive parking sealing device |
| CN107100882B (en) * | 2017-05-16 | 2019-04-16 | 中广核工程有限公司 | Nuclear reactor coolant pump and its passive parking sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA201409510B (en) | 2016-09-28 |
| FR2992392B1 (en) | 2014-07-11 |
| WO2014001702A1 (en) | 2014-01-03 |
| US20150192142A1 (en) | 2015-07-09 |
| JP2015528896A (en) | 2015-10-01 |
| CA2877212A1 (en) | 2014-01-03 |
| KR20150032300A (en) | 2015-03-25 |
| RU2015102015A (en) | 2016-08-20 |
| BR112014032566A2 (en) | 2017-06-27 |
| FR2992392A1 (en) | 2013-12-27 |
| IN2014DN11210A (en) | 2015-10-02 |
| EP2864676A1 (en) | 2015-04-29 |
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Application publication date: 20150513 |