CN107401616A - Nuclear power low pressure safety injection pump mechanically-sealing apparatus - Google Patents
Nuclear power low pressure safety injection pump mechanically-sealing apparatus Download PDFInfo
- Publication number
- CN107401616A CN107401616A CN201710628054.6A CN201710628054A CN107401616A CN 107401616 A CN107401616 A CN 107401616A CN 201710628054 A CN201710628054 A CN 201710628054A CN 107401616 A CN107401616 A CN 107401616A
- Authority
- CN
- China
- Prior art keywords
- ring
- stationary
- axle sleeve
- rotating
- seat
- 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
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Classifications
-
- 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
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
-
- 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
Abstract
Nuclear power low pressure safety injection pump mechanically-sealing apparatus of the present invention, moving ring assembly is made up of rotating ring (1), rotating seat (11), seal ring of moving ring (13), rotating seat sealing ring (14), trundle (15), boss (31) and screw thread stopping table (32) are provided with axle sleeve (3), annular rotating seat (11) coordinates with the screw thread stopping table (32) to be fixedly connected, and rotating ring (1), which coordinates, to be arranged on rotating seat (11)；Static components are slid auxiliary seal ring (21), throw-out collar (23), counterbalance spring (24), spring case (25) and formed by stationary ring (2), stationary ring, outer portion offers stationary ring anti-rotation positioning ring set (25a) and coordinated with stationary ring (2) outer ring surface anti-rotation on the left of spring case (25), stationary ring (2) and spring case (25) coordinate with the stationary seat ring set (6a) opened up on gland (6) to be installed, its is structural good, stationary ring coordinates floating stability good with rotating ring, seal stable, leakage rate is small, using reliable.
Description
Technical field
This patent refers to the mechanically-sealing apparatus of mechanically-sealing apparatus, particularly nuclear power station low pressure safety injection pump.
Background technology
The mechanically-sealing apparatus that prior art nuclear power low pressure safety injection pump uses is as shown in figure 1, by rotating ring, rotating ring sliding sealing
Circle, throw-out collar, counterbalance spring, spring case, the moving ring assembly of transmission holding screw composition, stationary ring, stationary ring sealing ring, stop pin composition
Static components, axle sleeve, positioning of axle sleeve plate, axle sleeve transmission ring, axle sleeve transmission screw, gland form.Rotating ring coordinates with axle sleeve
Installation, and set rotating ring to slide sealing ring with shaft room in the stopping table that rotating ring rear portion opens up, spring case is arranged on axle sleeve
And rotating ring is acted on by throw-out collar by transmission screw and bushing locking down, counterbalance spring, spring case front portion is provided with snap ring set and rotating ring
Tongue on outer shroud coordinates transmission rotating ring；Stationary ring is coordinated by stopping table and gland to be installed, and stationary ring is provided with stopping table and is sealed
Circle, sets stop pin between gland and stationary ring；Axle sleeve is by the positioning of axle sleeve plate and the axle sleeve that are fixedly connected on gland outer face
On the neck that opens up coordinate and carry out axially position, axle sleeve transmission ring coordinate be arranged on axle sleeve outer end by axle sleeve be driven screw with
Principal shaft locking is fixedly connected.
Requirement of the nuclear power low pressure safety injection pump for mechanical seal is that to have high reliability, need to be transported under multi-state point
OK.
Above-mentioned prior art nuclear power low pressure safety injection pump mechanically-sealing apparatus, rotating ring is as ring is compensated, because its structural member is more,
Participate in that torque transfer components are more, and mating connection relation is more, under high load capacity, high rotating speed, long-term operation operating mode, when there is one zero
During part transmission failure, whole moving ring assembly torque transmission failure, easily break down, influence the security reliability used.
Due to whirling vibration, the vibration of counterbalance spring can influence the stickiness of rotating ring and stationary ring end face, cause close
The reliability decrease of envelope；It is more with pump shaft rotation generation stirring heat and moving ring assembly axial dimension is grown, around sealing friction pair
Temperature raises, and is unfavorable for sealing stable operation, easily causes sealing leak amount greatly or sealing life shortens.
Because nuclear power low pressure safety injection pump pump shaft is thicker, the moving ring assembly average diameter as compensation ring is big, linear velocity
Very high, the compensation component for influenceing rotation is quickly made a response, and compensation tracing ability is deteriorated, remaining closed property of seal face moment drop
It is low, the increase of sealing leak amount；And because the diameter of counterbalance spring is smaller and linear velocity is higher, erosion of the medium to spring
Effect is big, the yielding influence compensation performance of spring.
In addition, its spring case tailstock is fixedly connected by being driven holding screw with axle sleeve anti-rotation, pacifies due to nuclear power low pressure and note
Pump pump shaft is thicker, and the torque of the spring case tailstock transmission of moving ring assembly is larger, is driven holding screw under high load capacity torque,
Easily occur releasing skidding, loose phenomenon causes transmission failure.And because torque is larger, the holding screw quantity of selection it is more and
Specification is big, and in assembling in order to ensure that transmission holding screw tightening is reliable, moment of torsion when installing transmission holding screw is larger, can make
Deformed into inner hole of shaft sleeve, unnecessary trouble is brought to mechanical seal installation and removal.
It is fixed in addition, axle sleeve is driven screw lock by axle sleeve on main shaft, axle sleeve is driven screw lock not only to main shaft
Certain damage and failure is generated, and reliable transmission is relatively low.
The content of the invention
The purpose of the present invention is that deficiency is improved the shortcomings that being directed to above-mentioned prior art, there is provided a kind of simple in construction, fortune
Row stability is good, service-strong nuclear power low pressure safety injection pump mechanically-sealing apparatus.
Nuclear power low pressure safety injection pump mechanically-sealing apparatus of the present invention, includes moving ring assembly, static components, axle sleeve 3, gland 6.
Moving ring assembly is made up of rotating ring 1, rotating seat 11, seal ring of moving ring 13, rotating seat sealing ring 14, trundle 15,
The left end of axle sleeve 3 is provided with moving ring assembly installation base 31, and screw thread stopping table is provided with the outer ring surface right side opening of the installation base 31
32, annular rotating seat 11 coordinates with the screw thread stopping table 32 to be fixedly connected, in the inner ring surface in the left side of rotating seat 11 and moving for axle sleeve 3
Rotating seat sealing ring 14 is provided between the outer ring surface mating surface of ring assemblies installation base 31, is offered on the right side inner ring surface of rotating seat 11
Inner stopper platform 12, the inner stopper platform 12 opened up on inner ring surface on the right side of rotating ring 1 and rotating seat, which coordinates, to be installed, the outer ring surface of rotating ring 1 with
Seal ring of moving ring 13 is provided between the inner ring surface mating surface of rotating seat 11, end face is stood on the right side of the moving ring assembly installation base 31 of axle sleeve 3
On be fixedly connected set trundle 15, trundle 15 coordinates with the transmission pin-and-hole 16 opened up in the left end face of rotating ring 1, to rotating ring 1
It is driven.
Static components are slid auxiliary seal ring 21, throw-out collar 23, counterbalance spring 24, spring case 25 and formed by stationary ring 2, stationary ring,
The first inner stopper groove 23a interference fits that the right-hand member of stationary ring 2 opens up with the left end of throw-out collar 23, even circumferential is distributed on spring case 25
Counterbalance spring mounting hole 24a is opened up, counterbalance spring 24 acts in its right end face of throw-out collar 23, stationary ring 2 is compensated；In spring
The left side outer portion of box 25 offers stationary ring anti-rotation positioning ring set 25a, and stationary ring anti-rotation positioning ring set 25a left end extend into stationary ring
2 left side leading section, it is distributed on stationary ring anti-rotation positioning ring set 25a circumference provided with axially open slotted eye 25b and the outer shroud of stationary ring 2
The axial tongue 2a cooperations opened up are correspondingly distributed on the circumference of face prevents stationary ring 2 from rotating, while shield protection is given to stationary ring 2.
Stationary seat ring set 6a is offered on gland 6, spring case 25 coordinates quiet on gland by its inner ring surface
On ring seat ring set 6a, the right-hand member of spring case 25 is fixedly connected with stationary seat ring set 6a seams with merga pass screw 27 with gland 6,
The left side leading section inner ring surface of the inner ring surface of stationary ring 2 and stationary seat ring set 6a coordinates, in stationary ring 2 and stationary seat ring set 6a inner ring surfaces
Stationary ring sliding auxiliary seal ring is opened up between mating surface, or is opened up on the first inner stopper groove 23a of the left end of throw-out collar 23 vertical end face
There is the second inner stopper platform 23b, set stationary ring to slide auxiliary seal ring 21 in the second inner stopper platform.
The present invention is provided with water seal 7 on the axis hole of gland 6；Axle sleeve 3 is fixed with the end face outside of gland 6 axially
Locating clamp plate 8, axially position clamp 8 coordinates with the neck 38 opened up on axle sleeve carries out axially position to axle sleeve；On the outside of gland
The outer end of axle sleeve 3 on be provided with axle sleeve cohesion device 9, axle sleeve cohesion device 9 holds axle sleeve 3 tightly by frictional force by pump shaft moment of torsion
Pass to axle sleeve 3.
The present invention is structural good, using reliable, is adapted to the requirement of multi-state point operation.
Its of the invention moving ring assembly is simple in construction, reliable transmission, and rotating ring 1 is gap cooperation with rotating seat 11, and pass through by
It is good with stationary ring conformability on rotating seat 11 that the floating dress of the seal ring of moving ring 13 of compression is arranged on, and moving ring assembly axial dimension is short, rotation
Caused stirring heat is few, is advantageous to improve sealing stable operation.
Coordinate between rotating seat 11 and axle sleeve 3 of the present invention without transmission mode connects for screw, but coordinated by screw thread stopping table 32
It is fixedly connected, not only reliable transmission, avoiding makes the abjection of transmission screw loosening cause to damage to mechanically-sealing apparatus, can also keep away
Exempt from the inner hole of shaft sleeve caused by transmission screw is big clamp force and lose circle deformation.
Using stationary ring as compensation ring, not only counterbalance spring is static is not influenceed the present invention by linear velocity, compensates chasing after for component
Ring set 25a and the cooperation of the anti-rotation of stationary ring 2 are positioned with excellent performance, and by the stationary ring anti-rotation of spring case 25, while stationary ring 5 is given
Shield is given, makes structure more safe and reliable, structural strength is high, can transmit big torque, and stationary ring coordinates floating stability with rotating ring
Good, static components are connected with gland only has a stationary ring sliding auxiliary seal ring 21 to seal, and seals stable, leakage rate
It is small.
Brief description of the drawings
Fig. 1 is prior art construction schematic diagram.
Fig. 2 is structural representation of the embodiment of the present invention.
Fig. 3 is Fig. 2 A-A sectional views.
Embodiment
The mechanically-sealing apparatus of nuclear power low pressure safety injection pump of the present invention, include moving ring assembly, static components, axle sleeve 3, gland
6。
Moving ring assembly is made up of rotating ring 1, rotating seat 11, seal ring of moving ring 13, rotating seat sealing ring 14, trundle 15,
The left end of axle sleeve 3 is provided with moving ring assembly installation base 31, and screw thread stopping table is provided with the outer ring surface right side opening of the installation base 31
32, annular rotating seat 11 coordinates with the screw thread stopping table 32 to be fixedly connected, in the inner ring surface in the left side of rotating seat 11 and moving for axle sleeve 3
Rotating seat sealing ring 14 is provided between the outer ring surface mating surface of ring assemblies installation base 31, is offered on the right side inner ring surface of rotating seat 11
Inner stopper platform 12, the inner stopper platform 12 opened up on inner ring surface on the right side of rotating ring 1 and rotating seat, which coordinates, to be installed, the outer ring surface of rotating ring 1 with
Seal ring of moving ring 13 is provided between the inner ring surface mating surface of rotating seat 11, end face is stood on the right side of the moving ring assembly installation base 31 of axle sleeve 3
On be fixedly connected set trundle 15, trundle 15 coordinates with the transmission pin-and-hole 16 opened up in the left end face of rotating ring 1, to rotating ring 1
It is driven.
Static components are slid auxiliary seal ring 21, throw-out collar 23, counterbalance spring 24, spring case 25 and formed by stationary ring 2, stationary ring,
The first inner stopper groove 23a interference fits that the right-hand member of stationary ring 2 opens up with the left end of throw-out collar 23, even circumferential is distributed on spring case 25
Counterbalance spring mounting hole 24a is opened up, counterbalance spring 24 acts in its right end face of throw-out collar 23, stationary ring 2 is compensated；In spring
The left side outer portion of box 25 offers stationary ring anti-rotation positioning ring set 25a, and stationary ring anti-rotation positioning ring set 25a left end extend into stationary ring
2 left side leading section, it is distributed on stationary ring anti-rotation positioning ring set 25a circumference provided with axially open slotted eye 25b and the outer shroud of stationary ring 2
The axial tongue 2a cooperations opened up are correspondingly distributed on the circumference of face prevents stationary ring 2 from rotating, while shield protection is given to stationary ring 2.
Stationary seat ring set 6a is offered on gland 6, spring case 25 coordinates quiet on gland by its inner ring surface
On ring seat ring set 6a, right-hand member and the stationary seat ring set 6a seams of spring case 25 coordinate, and even circumferential is distributed on spring case 25
If screw mounting hole 24b, spring case 25 is fixedly connected by screw 27 with gland 6, inner ring surface and the stationary seat ring set of stationary ring 2
6a left side leading section inner ring surface coordinates, and is offered on the first inner stopper groove 23a of the left end of throw-out collar 23 vertical end face in second
Stopping table 23b, stationary ring is set to slide auxiliary seal ring 21 in the second inner stopper platform.
The present invention is provided with water seal 7 on the axis hole of gland 6；Axle sleeve 3 is fixed with the end face outside of gland 6 axially
Locating clamp plate 8, axially position clamp 8 coordinates with the neck 38 opened up on axle sleeve carries out axially position to axle sleeve；On the outside of gland
The outer end of axle sleeve 3 on be provided with axle sleeve cohesion device 9, axle sleeve cohesion device 9 holds axle sleeve 3 tightly by frictional force by pump shaft moment of torsion
Pass to axle sleeve 3.
Claims (2)
1. nuclear power low pressure safety injection pump mechanically-sealing apparatus, including moving ring assembly, static components, axle sleeve (3), gland (6), it is special
Sign is：
Moving ring assembly is by rotating ring (1), rotating seat (11), seal ring of moving ring (13), rotating seat sealing ring (14), trundle (15) structure
Into being provided with moving ring assembly installation base (31) in the left end of axle sleeve (3), be provided with the outer ring surface right side opening of the installation base (31)
Screw thread stopping table (32), annular rotating seat (11) coordinates with the screw thread stopping table (32) to be fixedly connected, on the left of rotating seat (11)
Inner ring surface and axle sleeve (3) moving ring assembly installation base (31) outer ring surface mating surface between be provided with rotating seat sealing ring (14),
Inner stopper platform (12) is offered on the right side of rotating seat (11) on inner ring surface, rotating ring (1) is interior with being opened up on inner ring surface on the right side of rotating seat
Stopping table (12) coordinates installation, and seal ring of moving ring is provided between rotating ring (1) outer ring surface and rotating seat (11) inner ring surface mating surface
(13), stand to be fixedly connected on end face on the right side of axle sleeve (3) moving ring assembly installation base (31) and trundle (15), trundle are set
(15) coordinate with the transmission pin-and-hole (16) opened up in rotating ring (1) left end face, rotating ring (1) is driven；
Static components slide auxiliary seal ring (21), throw-out collar (23), counterbalance spring (24), spring case (25) by stationary ring (2), stationary ring
Form, the first inner stopper groove (23a) that right-hand member and throw-out collar (23) left end of stationary ring (2) open up coordinates, the circle on spring case (25)
It is uniformly distributed in week and opens up counterbalance spring mounting hole (24a), counterbalance spring (24) is acted in throw-out collar (23) its right end face, to stationary ring
(2) compensate；Outer portion offers stationary ring anti-rotation positioning ring set (25a), stationary ring anti-rotation positioning on the left of spring case (25)
The left end of ring set (25a) extend into the left side leading section of stationary ring (2), is distributed on stationary ring anti-rotation positioning ring set (25a) circumference
The axial tongue (2a) opened up provided with axially open slotted eye (25b) distribution corresponding with stationary ring (2) outer ring surface circumference, which coordinates, to be prevented
Stationary ring (2) rotates；
Stationary seat ring set (6a) is offered on gland (6), spring case (25) is coordinated by its inner ring surface to be arranged on gland
On stationary seat ring set (6a), right-hand member and stationary seat ring set (6a) seam of spring case (25) coordinate, the circumference on spring case (25)
It is uniformly distributed and opens up screw mounting hole (24b), spring case (25) is fixedly connected by screw (27) with gland (6), stationary ring (2)
The left side leading section inner ring surface of inner ring surface and stationary seat ring set (6a) coordinate, in stationary ring (2) and stationary seat ring set (6a) inner ring
Stationary ring sliding auxiliary seal ring is opened up between the mating surface of face.
2. nuclear power low pressure safety injection pump mechanically-sealing apparatus according to claim 1, it is characterized in that：
Offer the second inner stopper platform (23b) on the vertical end face of the first inner stopper groove (23a) of throw-out collar (23) left end, this
Stationary ring is set to slide auxiliary seal ring (21) in two inner stopper platforms；
Water seal (7) is provided with the axis hole of gland (6)；
Axle sleeve (3) axially position clamp (8), axially position clamp (8) and axle sleeve are fixed with the end face outside of gland (6)
On the neck (38) that opens up coordinate axially position carried out to axle sleeve；
Axle sleeve cohesion device (9) is provided with axle sleeve (3) outer end on the outside of gland, axle sleeve cohesion device (9) holds axle sleeve tightly
(3) pump shaft moment of torsion is passed to by axle sleeve (3) by frictional force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710628054.6A CN107401616A (en) | 2017-07-28 | 2017-07-28 | Nuclear power low pressure safety injection pump mechanically-sealing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710628054.6A CN107401616A (en) | 2017-07-28 | 2017-07-28 | Nuclear power low pressure safety injection pump mechanically-sealing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107401616A true CN107401616A (en) | 2017-11-28 |
Family
ID=60402296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710628054.6A Pending CN107401616A (en) | 2017-07-28 | 2017-07-28 | Nuclear power low pressure safety injection pump mechanically-sealing apparatus |
Country Status (1)
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139924A (en) * | 2018-09-28 | 2019-01-04 | 安徽安密机械密封有限公司 | A kind of multiple springs mechanical sealing assembly and its manufacturing process |
| CN109163097A (en) * | 2018-10-31 | 2019-01-08 | 东莞市华汇精密机械有限公司 | A kind of mechanically-sealing apparatus of ultrafine dust ball mill |
| CN109237037A (en) * | 2018-09-28 | 2019-01-18 | 安徽安密机械密封有限公司 | A kind of mechanical sealing element of kettle and its manufacturing process |
| CN109441871A (en) * | 2018-12-20 | 2019-03-08 | 丹东克隆集团有限责任公司 | Nuclear power feed pump mechanical sealing linkage ring device |
| CN109488770A (en) * | 2018-12-20 | 2019-03-19 | 丹东克隆集团有限责任公司 | Nuclear power plant containment shell heat derives pump uses double end-face mechanical sealing device |
| CN109654229A (en) * | 2018-12-20 | 2019-04-19 | 丹东克隆集团有限责任公司 | The external protection integrated mechanical seal device of counterbalance spring |
| CN112197004A (en) * | 2020-10-12 | 2021-01-08 | 江门市新会区天府密封科技有限公司 | Prevent mechanical seal subassembly of leakage |
| CN112324914A (en) * | 2020-11-13 | 2021-02-05 | 安徽工程大学 | Spring mechanical type aviation sealing member |
| CN113028066A (en) * | 2021-04-13 | 2021-06-25 | 辽宁石油化工大学 | Seal assembly for main pump of nuclear power station |
| GB2610041A (en) * | 2021-08-18 | 2023-02-22 | Aigi Env Inc | Cartridge type mechanical sealing device for sealing liquid |
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| CN207229754U (en) * | 2017-07-28 | 2018-04-13 | 丹东克隆集团有限责任公司 | Nuclear power low pressure safety injection pump mechanically-sealing apparatus |
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| CN201209586Y (en) * | 2008-06-26 | 2009-03-18 | 大庆油田有限责任公司 | Mechanical sealing device for high-pressure water filling pump |
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| CN204716985U (en) * | 2015-05-29 | 2015-10-21 | 无锡德锐仕搅拌科技有限公司 | A kind of side entering type sanitation-grade mechanical seal structure |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139924A (en) * | 2018-09-28 | 2019-01-04 | 安徽安密机械密封有限公司 | A kind of multiple springs mechanical sealing assembly and its manufacturing process |
| CN109237037A (en) * | 2018-09-28 | 2019-01-18 | 安徽安密机械密封有限公司 | A kind of mechanical sealing element of kettle and its manufacturing process |
| CN109163097A (en) * | 2018-10-31 | 2019-01-08 | 东莞市华汇精密机械有限公司 | A kind of mechanically-sealing apparatus of ultrafine dust ball mill |
| CN109441871A (en) * | 2018-12-20 | 2019-03-08 | 丹东克隆集团有限责任公司 | Nuclear power feed pump mechanical sealing linkage ring device |
| CN109488770A (en) * | 2018-12-20 | 2019-03-19 | 丹东克隆集团有限责任公司 | Nuclear power plant containment shell heat derives pump uses double end-face mechanical sealing device |
| CN109654229A (en) * | 2018-12-20 | 2019-04-19 | 丹东克隆集团有限责任公司 | The external protection integrated mechanical seal device of counterbalance spring |
| CN109654229B (en) * | 2018-12-20 | 2024-01-16 | 丹东克隆集团有限责任公司 | Compensation spring external protection integrated mechanical sealing device |
| CN112197004A (en) * | 2020-10-12 | 2021-01-08 | 江门市新会区天府密封科技有限公司 | Prevent mechanical seal subassembly of leakage |
| CN112324914A (en) * | 2020-11-13 | 2021-02-05 | 安徽工程大学 | Spring mechanical type aviation sealing member |
| CN113028066A (en) * | 2021-04-13 | 2021-06-25 | 辽宁石油化工大学 | Seal assembly for main pump of nuclear power station |
| GB2610041A (en) * | 2021-08-18 | 2023-02-22 | Aigi Env Inc | Cartridge type mechanical sealing device for sealing liquid |
| GB2610041B (en) * | 2021-08-18 | 2024-01-31 | Aigi Env Inc | Cartridge type mechanical sealing device for sealing liquid |
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