CN110073110A - Pump assembly and nuclear reactor with such pump assembly - Google Patents
Pump assembly and nuclear reactor with such pump assembly Download PDFInfo
- Publication number
- CN110073110A CN110073110A CN201780078693.8A CN201780078693A CN110073110A CN 110073110 A CN110073110 A CN 110073110A CN 201780078693 A CN201780078693 A CN 201780078693A CN 110073110 A CN110073110 A CN 110073110A
- Authority
- CN
- China
- Prior art keywords
- valve
- pump assembly
- diffuser
- valve body
- valve chamber
- 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.)
- Granted
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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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
- F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
-
- 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
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/52—Outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of pump assembly (2), the pump assembly is for being arranged at nuclear reactor and for conveying the exchanger liquid heated in the reactor, the pump assembly is with motor portion (4) and with the pump portion (3) of shell (7), wherein, diffuser (19) is disposed in the inner space (14) of the shell (7) and is disposed with valve gear (35), and the opening (25) of the diffuser (19) is configured to the valve seat of the valve body (38) of the valve gear (35).
Description
Technical field
The present invention relates to a kind of for being arranged at nuclear reactor and for conveying the friendship heated in the reactor
The pump assembly of parallel operation liquid, the pump assembly have motor portion and the pump portion with shell.In addition, the present invention relates to one kind
Nuclear reactor with this kind of pump assembly.
Background technique
It is such pump for example in the environment of nuclear reactor, especially also for small power bracket reactor it is (small-sized
Modularization reactor) in the case where use.Often be mounted at these reactors it is multiple it is being distributed on periphery, be used as following
The pump assembly of ring pump.In most cases, motor described herein is vertically disposed on or below the pump portion, one
Also the horizontal embodiment of the pump can be found in a little situations.Here, each pump assembly has distinctive pressure housing, institute
It states pressure housing and connect via leading into leading-out portion with the pressure housing of the reactor.In the case where pressurized water reactor, institute
The exchanger liquid pumped for will heat in the reactor is stated to convey in the circuit of closure by being configured to heat exchanger
Steam generator.In the case where boiling water reactor, these pumps are responsible for the circulation of the inside in primary circuit.
By multiplex assembly and parallel operation related to this, on the one hand it is possible that being adjusted by cutting off each pump
The power of the reactor is saved, on the other hand in the case where one or more pumps failure, remaining pump can make the operation
Limitedly maintained.However here, cutting or failure pump is flowed through backward.In order to avoid falling back rotation herein and be
It improves flow resistance and thus limits the loss on volume, this kind of pump assembly is equipped on the pump or motor drive shaft in freewheel
The revolution cut-off portion of form.In spite of the revolution cut-off portion but still the loss on the volume of appearance is undesirable and is aobvious
The energy loss of work.
Summary of the invention
The task of the present invention is illustrate a kind of pump assembly, should get around described disadvantage by the pump assembly.In addition,
The use of complicated and thus expensive component should be avoided.
According to the present invention, it the diffuser in inner space of this task by being arranged in the shell and is arranged in described
Valve gear in the inner space of shell solves, wherein the opening of the diffuser is configured to the valve of the valve gear
The valve seat of body.
By using such valve gear, the valve body of the valve gear and the diffuser collective effect as valve seat can
Abandon complicated and expensive revolution cut-off portion.Because being prevented from flowing back into the pump case by the valve gear and thus being prevented
Rotation is only fallen back, so fully avoiding the loss on the volume in the case where pump still operated.
Advantageously, the valve gear includes valve chamber, the valve spring being arranged in the valve chamber and can move in the valve chamber
Position ground arrangement, by the valve spring with spring force come the valve body that loads.It is achieved in the check-valves that can be simply manufactured, institute
Pre-assembled can be easy by stating check-valves
For interference-free flowing, the valve gear is arranged in the can-like area of the shell relative to the opening of the diffuser
In domain.Thus, it is possible to the fully release flow paths in the state that valve gear is opened.
In order to enable the valve gear to dispose reliable for operationly, the shell advantageously has matrix, described matrix tool
There is the stepped part being inwardly formed in the inner space by the reinforcement part of the wall of described matrix, wherein the valve chamber has
The annular flange extended in a radial direction, the annular flange stick at the stepped part of described matrix.
An improvement project according to the present invention, at least one axial direction is configured in the annular flange of the valve chamber and is opened
Hole, is inserted at least one pipe in the axial aperture, and the pipe extends in the gap in the ring of the diffuser.Via
In each handoff procedure of the valve gear pressure balance occurs for axial aperture, pipe and gap.From there through in the pump
Power other than flow pulses is applied on valve piston by the pressure difference flowed in and out between side, and the valve piston makes described
Valve gear keeps opening wide during the operation of the pump.
In other design scheme, the valve chamber has bottom, and the bottom is via guiding wall and the annular flange
Connection.The valve body has sealing surface towards the diffuser and again from the sealing surface towards the side of the bottom of the valve chamber
To the annular wall of extension, blocking for the valve body is thus on the one hand realized, and on the other hand realize that the low of the valve gear is rubbed
The switching of wiping.
In another advantageous embodiment, the valve body mushroom head or stairstepping construct, wherein it is described close
Cover is radially more than the annular wall.It can be taken by the mushroom head of the valve body or step-like structural scheme
Certainly diametrically apply via the difference in areas for the annular established by protrusion depending on by being produced in running pump in accordingly
The additional closing force of raw pressure difference.
In the suitable improvement project of another kind, the valve chamber has perforation aperture in bottom, and guiding bar extends through
The perforation aperture.Here, being provided with blind hole in the valve body, the guiding bar is extend into the blind hole for running
Reliably guide the valve body.
Another task of the invention is, provides a kind of nuclear reactor with improved efficiency.
The nuclear reactor has pump assembly according to the present invention to solve proposed task.
Detailed description of the invention
Other feature and advantage of the invention by by attached drawing come the description to some embodiments and by attached drawing itself
It obtains.
Herein:
Fig. 1 shows the schematical diagram of nuclear reactor, and the nuclear reactor has the basis being arranged at the nuclear reactor
Pump assembly of the invention,
Fig. 2 shows the first embodiment party for passing through the pump assembly according to the present invention with pump portion, connecting element and motor portion
The longitudinal section of formula,
Fig. 3 shows the longitudinal section of the pump portion across the valve with closure from Fig. 2,
Fig. 4 is shown across the longitudinal section of the pump portion with the valve opened from Fig. 2,
Fig. 5 shows the longitudinal section of the pump portion across the second embodiment with the valve opened, and
Fig. 6 shows the longitudinal section of the pump portion across the third embodiment with the valve opened.
Specific embodiment
Fig. 1 shows reactor 1, and what is be preferably uniformly distributed on outer peripheral edge is according to the present invention for conveying described anti-
The pump assembly 2 of the exchanger liquid heated in heap is answered to be placed at the reactor.
Fig. 2 shows the illustrative embodiments of pump assembly 2 according to the present invention.The pump assembly 2 has 3 He of pump portion
Motor portion 4, the pump portion and motor portion are attached to by means of connecting element 5 to be located each other.
Laid in the motor portion 4 unshowned driver, the electric motor usually flowed through by cooling medium or
Splitting pipe electric motor.The driven shaft 6 of the driver is extended in the pump portion 3 by the connecting element 5.If any can
Can, in the connecting element 5, Flywheel disc can be arranged at the driven shaft 6, and the Flywheel disc is in the driver failure
In the case where maintain conveying activity in short time.
Such as illustrated in greater detail in Fig. 3, the pump portion 3 include shell 7, the shell have be arranged therein
The hydraulic unit being described in more detail below.The shell 7 has substantially columnar matrix 8, and described matrix is in longitudinal direction
The pivot center of axis X, the longitudinal central axis line and the driven shaft 6 overlaps.Described matrix 8 is in this side for deviating from the motor
Place is closed by means of the bottom 9 of arch.The bottom 9 of the shell 7 passes through the substantially spherical caps region 10 of ball sector and will
The hat brim region 11 of transitional region forming between matrix 8 and spherical caps region 10 is formed.In this opposed with the bottom 9
At side, the shell 7 is closed by covering element 12, wherein the opening 13 in center is provided in the covering element 12, it is described
Driven shaft 6 is extended in the inner space 14 of the shell 7 by the opening in the center.
Described matrix 8 is equipped with cricoid coupling arrangement 15, the coupling arrangement edge at this side opposed with the bottom 9
Axial direction is prominent and stepped part 16 is formed at the end side of described matrix 8.By means of unshowned in the coupling arrangement
Threaded hole and threaded fastener or threaded rod in 15 can be by described matrixes 8 and motor portion 4 shown in figure 2 and institute
State the connection of connecting element 5.The covering element 12 disposes at connecting element 5 shown in figure 2 and in the assembled state
Stick at the stepped part 16, and the inner space 14 by the hydraulic flowing space, i.e. in the pump case 7 be in
Connecting element 5 on it separates.The extension of the covering element 12 in axial direction substantially corresponds to the coupling arrangement
15 it is axially extending.Unshowned sealing element is responsible for the necessary leakproofness of component.
It is connect with the covering element 12 ground by means of one or more holding meanss 12a, fluid guiding device 17 is from upper
It reaches in the inner space 14 and at least partially around the driven shaft 6 and is placed at the driven shaft herein
Running wheel 18.Preferably, the holding meanss 12a, the covering element 12 and the fluid guiding device 17 structure one-piece
It makes.Diffuser 19 is placed in the free end of the fluid guiding device 17 extended downwardly in the inner space 14
And it is extended further down into the inner space 14.The connecting portion of fluid guiding device 17 and diffuser 19 is for institute
State the centering of diffuser 19 and stairstepping construct.
In the diffuser 19, on the one hand the guide vane 20 for guiding the exchanger liquid, another party are set
Realize that supporting member receiving portion 21, the supporting member receiving portion are same by the guide vane 20 in the inside of the diffuser 19 in face
Heart is maintained in the diffuser 19.Additionally or alternatively, the supporting member receiving portion 21 can be same by means of rib 22
Heart is maintained in the diffuser 19.Radial bearing 23, the radial branch are provided in the supporting member receiving portion 21
Bearing member supports the end of the driven shaft 6.The aggregation of particle in order to prevent deviates from the fortune in the supporting member receiving portion 21
The lower end of runner 18 is provided with opening 24.
The end away from the fluid guiding device 17 of the diffuser 19 has opening 25 and is equipped with radially side
To the ring 26 of extension, the ring is sticked on to the full extent at the inside of described matrix 8 and by means of unshowned sealing
Element by the inner space 14 be divided into via the ring 26 formed with flow into region 28 annular space 27 and be in
Outflow region 29 below.
The matrix 8 of the shell 7 is equipped with fixed adapter tube 30 in side-walls, it is described it is fixed take over can pressure seal and institute
State the connection of reactor sheath.Realize that the horizontal of the pump assembly flows in and out in the fixed adapter tube 30.Here, described
Fixed adapter tube 30 is similar to the pipe of double-walled to construct.The fixation adapter tube 30 has channel 31, to be conveyed by the channel
Fluid can via flow into opening 32 flow to it is described flow into region 28 or via outflow opening 33 from the outflow region 29
Middle outflow.
Between the outflow region 29 and the spherical caps region 10, what the inner space 14 was constructed with can-like
Region 34 is arranged in this region in the valve gear 35 of form of check valve.The valve gear 35 includes valve chamber 36, valve spring 37
And the valve body 38 of piston-like.The valve spring 37 is supported at the valve chamber 36 and with spring force along the diffuser 19
Direction loads the valve body 38.Below the outflow region 29, described matrix 8 has stepped part 39, and the stepped part passes through
The reinforcement part of the wall of described matrix 8 is inwardly formed in the inner space 14.The valve chamber 36 is away from the pump case 7
There is the annular flange 40 extended in a radial direction, the annular flange sticks on described matrix at this side in spherical caps region 10
At 8 stepped part 39.It is in the annular flange 40, same unshowned that unshowned threaded fastener extends through construction
Aperture, the aperture be screwed into the sightless threaded hole in the stepped part 39 and by the valve chamber 36 with it is described
The matrix 8 of shell 7 connects.
There is the bottom towards the spherical caps region 10 relative to the longitudinal central axis line X valve chamber 36 being disposed concentrically upon
41, the bottom is connect via guiding wall 42 with the annular flange 40.
At least one aperture 43 in axial direction extends through the valve chamber 36.In the present embodiment, it at least two opens
Hole 43 extends through the bottom 41.Be provided in the centre of the bottom 41 inside for reaching the valve chamber 36 for protecting
Hold and guide the protruding portion 44 of the plate-like of the valve spring 37.At least one, which is configured with, in the annular flange 40 is parallel to institute
The axial aperture 45 moved towards with stating longitudinal central axis line X.Pipe 46 is inserted at least one described axial aperture 45, the pipe to
On extend to opening in the ring 26 of free end for being arranged in the diffuser 19 relative at least one described axial direction
It flows into region 28 in the gap 47 that hole 45 is aligned and by described and is connect with the region 34 of the inner space 14.
The valve body 38 designed to the can-like has sealing surface 48 towards the diffuser 19 and from the sealing surface 48
The annular wall 49 extended towards the direction of bottom 41.The sealing surface 48 has the portion that arches upward being directed toward along the direction of diffuser 19.
The valve body 38 is set axially moveably to draw in the valve chamber 36 along the guiding wall 42 by means of the annular wall 49
It arranges with leading.It is internal, at this side towards the bottom 41, the valve body 38 has for keeping and guiding the valve bullet
The protruding portion 50 of the plate-like of spring 37.The edge of opening 25 in the diffuser 19 forms the valve seat for being used for the valve body 38.
Fig. 3 shows the pump portion 3 during the normal operation of the pump assembly 2.The exchanger liquid flowing is (by institute
State driven shaft 6 and the thus rotation of the running wheel 18 and cause) it is flowed into region 28 to described.From from this, horizontally it is directed toward
The portion of flowing into turn to and be vertically directed upwards towards and convey by being formed by matrix 8, diffuser 19, fluid guiding device 17
Annular space 27.From the annular space 27, the fluid is flowed to be made at this side towards the inner space 14
For structure for curvature section covering element 12 and be radially symmetrically deflected downwards in the fluid guiding device 17 from this
Portion is to the running wheel 18.In the case where the pressure of raising, the fluid is flow to described by other annular space 51
It flows out in region 29, the annular space passes through the supporting member receiving portion 22 of the diffuser 19 in the inside of the diffuser 19
It is limited with the wall portion.In this outflow region, the steering of flowing in the horizontal direction is realized, and the fluid is then
The reactor is flowed to via the outflow opening.Here, the valve body 38 be fully pushed into the valve chamber 36 and
Fully release flow path herein.The valve body 38 does not form convex relative to the region of the guidance flowing of the annular flange 40
Shoulder or stepped part.In addition, the sealing surface 48 is the profile of guidance flowing.By this component, the valve gear 35 of opening is not made
At flow resistance.
Fig. 4 shows the pump portion 3 under the stationary state of the pump assembly 2.In the running wheel 18 no longer trandfer fluid
Later, the power of the load valve body 38 of the valve spring 37 is greater than the pressure of the water column on the valve body 38.Thus will
The valve body 38 compresses the valve seat formed in the diffuser 19 by the edge of the opening 25.Meanwhile fluid can be from
The annular space 27 flow to valve body 38 and valve chamber by the pipe 46 and at least one aperture 43 in the bottom 41
In 36 inside and the closing motion of the valve body 38 is supported to support.
If the pump assembly 2 enters operation again, the fluid compresses the valve body 38 again by the running wheel 18, by
This make this valve body be moved to being shown in FIG. 3 as described in valve chamber 36.Meanwhile for the downside of the valve body 38
Discharge degree can be such that the fluid flows out from the inside of valve body 38 and valve chamber 36.Wherein, swabbing action passes through along covering element
The fluid adjustment of 12 direction flowing, the swabbing action support the fluid by the outflow of the pipe 46 and thus support institute
Valve body 38 is stated to the push-in in the valve chamber 36.
In the embodiment with the bearing load-carrying unit 21 simplifiedly shown being shown in FIG. 5, the covering element
12 have the region with the radial extension bigger than in previously shown and description figure.Here, the coupling arrangement
It is axially extending in the 15 axial embodiment extended less than in Fig. 3.The region of the covering element 12 extends past
The coupling arrangement 15 of described matrix 8.The 38 mushroom head of valve body for the embodiment being shown in FIG. 5 or stairstepping construct.
Here, the sealing surface 48 is radially more than the annular wall 49.Axis is provided in the region of the annular flange 40
To retraction portion 52, in the case where valve body 38 being pushed into the valve chamber 36, radially the sealing surface 48 of protrusion is received into
In the retraction portion.By the mushroom head of the valve body 38 or step-like construction, can depend on it is corresponding diametrically
Apply the additional closing force for depending on the pressure difference by generating in running pump via the difference in areas D of annular.
In the embodiment being shown in FIG. 6, the first subregion 53 of the covering element 12 sticks on the stepped part
At 16.Radially company shown in FIG. 1 is disposed between the subregion 53 and the coupling arrangement 15 of the shell 7
Connect a part 54 of element 5.Second subregion 55 of the covering element 12 extends at least partly into the inside of the shell 7
In space 14.It is interpreted as, the shown variant schemes of each of covering element 12 with correspondingly matched size can make
With on all shown shells 7.
The valve chamber 36 has the perforation aperture 56 being disposed concentrically upon relative to longitudinal central axis line X in the bottom 41,
The perforation aperture is embodied as ladder aperture.The perforation aperture 56 has the region 57 for having reduced interior diameter and with increasing
The region 58 of big interior diameter.Guiding bar 59 extends through the perforation aperture 56, and the guiding bar, which has, is associated with the band
There is the region 60 with reduced overall diameter in the region 57 of the interior diameter of reduction and is associated with described with the interior diameter increased
Region 58 with increase overall diameter region 61.The spherical caps region 10 along the shell 7 of the guiding bar 59
The free end that direction extends is equipped with screw thread, and nut 62 can screw on the screw thread.As a result, by the guiding bar 59
The region 61 of overall diameter with increase in axial direction compresses the region with reduced interior diameter of the perforation aperture 56
57, and keep the guiding bar 59 reliably.
The bottom 41 has peviform region 63, the cloth in the peviform region on this side opposed with the nut 62
It is equipped with the valve spring 37.At least one described aperture 43 is extended in a radial direction through the valve chamber 36.In present embodiment
In, at least one described aperture 43 extends through the guiding wall 42 of the valve chamber 36.The embodiment being shown in FIG. 6 is not shown
In variant schemes out, at least one described aperture 43 can be in axial direction (as being especially shown in FIG. 3) or along inclination
Direction extend through the bottom 41 of the valve chamber 36.
It constructs to the 38 mushroom head of valve body, wherein the protruding portion 50 that the direction along bottom 41 extends is described
Valve gear 35 be closed in the state of to extending up to the peviform region 63.Here, the protruding portion 50 is moved towards with cone cell
Section 64 and columnar section 65.In the valve body 38, blind hole 66 is especially provided in the protruding portion 50, it is described
Guiding bar 59 is extend into the blind hole, and thus the valve body 38 can be guided reliably in the case where axially moving.
If the pump assembly 2 enters operation, the fluid flow to described flow into the case where pump portion 3
The annular space 27, the then bending section by construction in the covering element 12 are flowed through in region 28, from this
It flow in the annular space 51 that (annular space passes through the supporting member receiving portion 21 in the inside of the diffuser 19
Formed with the wall portion of the diffuser 19), and finally flow in the outflow region 29.Here, the valve body 38 passes through
The pulse of the flowing is fully expressed in the valve chamber 36.The fluid existing for the inside of the valve gear 35 is herein first
Period pass through at least one described aperture 43 and at least one described axial aperture 45 escape in the outflow region 29 and
Then it is guided from the pump case 7 together with the fluid present in the outflow region 29 via the outflow opening 33
Out.
Under the stationary state of the running wheel 18, the valve body 38 is pressed by the valve spring 37 along the direction of diffuser 19
The valve seat formed to the edge by the opening 25.Here, fluid can flow out through at least one from the outflow region 29
A inside that the valve gear 35 is flow to for axial aperture 45 required for pressure balance and at least one described aperture 43.
Claims (10)
1. pump assembly (2), the pump assembly heats in the reactor for being arranged at nuclear reactor and for conveying
Exchanger liquid, the pump assembly with motor portion (4) and with shell (7) pump portion (3),
It is characterized in that,
The diffuser (19) that is arranged in the inner space (14) of the shell (7) and the inside for being arranged in the shell (7) are empty
Between valve gear (35) in (14), wherein the opening (25) of the diffuser (19) is configured to the valve gear (35)
The valve seat of valve body (38).
2. pump assembly according to claim 1, which is characterized in that the valve gear (35) includes valve chamber (36), is arranged in
Valve spring (37) in the valve chamber (36) and can shift in the valve chamber (36) it is that ground is arranged, pass through the valve spring (37)
With spring force come the valve body (38) that loads.
3. pump assembly according to claim 1 or 2, which is characterized in that the valve gear (35) is relative to the diffuser
(19) opening (25) is arranged in the can-like region (34) of the shell (7).
4. pump assembly according to any one of claim 1 to 3, which is characterized in that the shell (7) has matrix (8),
There is described matrix the reinforcement part of the wall by described matrix (8) to be inwardly formed the stepped part in the inner space (14)
(39), and the valve chamber (36) has the annular flange (40) extended in a radial direction, and the annular flange sticks on described
At the stepped part (39) of matrix (8).
5. the pump assembly according to any one of claim 2 or 4, which is characterized in that the convex annular in the valve chamber (36)
It is configured at least one axial aperture (45) in edge (40), at least one pipe (46), the pipe are inserted into the axial aperture
It extends in the gap (47) being arranged in the ring (26) of the free end of the diffuser (19).
6. the pump assembly according to any one of claim 2 to 5, which is characterized in that the valve chamber (36) has bottom
(41), the bottom is connect via guiding wall (42) with the annular flange 39.
7. the pump assembly according to any one of claim 2 to 6, which is characterized in that the valve body (38) has towards institute
It states the sealing surface (48) of diffuser (19) and prolongs from the sealing surface (48) towards the direction of the bottom (41) of the valve chamber (36)
The annular wall (49) stretched.
8. the pump assembly according to any one of claim 2 to 7, which is characterized in that valve body (38) the mushroom head
Or stairstepping construct, wherein the sealing surface (48) radially be more than the annular wall (49).
9. pump assembly according to claim 8, which is characterized in that the valve chamber (38) has in the bottom (41) passes through
It opening up hole (56), guiding bar (59) extends through the perforation aperture, and blind hole (66) are provided in the valve body (38),
The guiding bar (59) extend into the blind hole for guiding the valve body (38).
10. nuclear reactor (1), it is characterised in that pump assembly (2) according to any one of claim 1 to 10.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016225533.9A DE102016225533B4 (en) | 2016-12-20 | 2016-12-20 | Pump assembly and nuclear reactor with such a pump assembly |
| DE102016225533.9 | 2016-12-20 | ||
| PCT/EP2017/083006 WO2018114660A1 (en) | 2016-12-20 | 2017-12-15 | Pump arrangement, and nuclear reactor having a pump arrangement of this type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110073110A true CN110073110A (en) | 2019-07-30 |
| CN110073110B CN110073110B (en) | 2021-06-04 |
Family
ID=60813838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780078693.8A Active CN110073110B (en) | 2016-12-20 | 2017-12-15 | Pump assembly and nuclear reactor with such a pump assembly |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3559471B1 (en) |
| CN (1) | CN110073110B (en) |
| DE (1) | DE102016225533B4 (en) |
| WO (1) | WO2018114660A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340183A (en) * | 2018-09-21 | 2019-02-15 | 中广核研究院有限公司 | A kind of nuclear reactor coolant pump and its pump shell structure |
| CN109340184A (en) * | 2018-09-21 | 2019-02-15 | 中广核研究院有限公司 | A kind of nuclear reactor coolant pump and its anti-backflow pump shell structure |
| CN113982909A (en) * | 2021-10-22 | 2022-01-28 | 中国原子能科学研究院 | Reactor, pump support assembly and cooling system for power pump |
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|---|---|---|---|---|
| GB1370747A (en) * | 1971-12-03 | 1974-10-16 | Andritz Ag Maschf | Impeller type water circulating pump |
| CN101576193A (en) * | 2008-05-08 | 2009-11-11 | 国立大学法人信州大学 | Backflow preventer |
| CN104265646A (en) * | 2014-07-31 | 2015-01-07 | 苏州淮通电气有限公司 | Immersible pump with adjustable water outlet pressure |
| CN105736388A (en) * | 2016-02-29 | 2016-07-06 | 蒋燕群 | Automatic control type efficient self sucking pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4396350A (en) | 1980-12-24 | 1983-08-02 | Kinney Calvin L | Pump isolation valve |
| IT1213377B (en) * | 1986-11-11 | 1989-12-20 | Marelli Componenti Elettrodome | MULTI-STATE PUMP FOR SUBMERSIBLE ELECTRIC PUMP. |
| DE602005004016D1 (en) * | 2005-05-31 | 2008-02-07 | Pedrollo Spa | Zentrifugaltauchpumpe |
| DE602005008744D1 (en) * | 2005-09-23 | 2008-09-18 | Coprecitec Sl | Drain pump of a household appliance |
-
2016
- 2016-12-20 DE DE102016225533.9A patent/DE102016225533B4/en not_active Expired - Fee Related
-
2017
- 2017-12-15 CN CN201780078693.8A patent/CN110073110B/en active Active
- 2017-12-15 WO PCT/EP2017/083006 patent/WO2018114660A1/en unknown
- 2017-12-15 EP EP17821871.5A patent/EP3559471B1/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1370747A (en) * | 1971-12-03 | 1974-10-16 | Andritz Ag Maschf | Impeller type water circulating pump |
| CN101576193A (en) * | 2008-05-08 | 2009-11-11 | 国立大学法人信州大学 | Backflow preventer |
| CN104265646A (en) * | 2014-07-31 | 2015-01-07 | 苏州淮通电气有限公司 | Immersible pump with adjustable water outlet pressure |
| CN105736388A (en) * | 2016-02-29 | 2016-07-06 | 蒋燕群 | Automatic control type efficient self sucking pump |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018114660A1 (en) | 2018-06-28 |
| EP3559471A1 (en) | 2019-10-30 |
| DE102016225533B4 (en) | 2018-11-22 |
| EP3559471B1 (en) | 2021-01-27 |
| CN110073110B (en) | 2021-06-04 |
| DE102016225533A1 (en) | 2018-06-21 |
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