CN106838386B - It is a kind of can on-line maintenance axial flow type check valve - Google Patents
It is a kind of can on-line maintenance axial flow type check valve Download PDFInfo
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- CN106838386B CN106838386B CN201710128793.9A CN201710128793A CN106838386B CN 106838386 B CN106838386 B CN 106838386B CN 201710128793 A CN201710128793 A CN 201710128793A CN 106838386 B CN106838386 B CN 106838386B
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- spool
- valve
- flap
- valve rod
- valve body
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Classifications
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/12—Covers for housings
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses it is a kind of can on-line maintenance axial flow type check valve, it is characterized in that: be arranged top opening at the top of valve body, core assembly is in top opening position merging valve body, and valve deck, which is arranged, in the top opening of valve body enables valve body to close；Core assembly is to be suspended on spool on spool bracket using supporting rib, and spool bracket is fixed at the top opening position of valve body using spool fixing clasp.Flow resistance of the present invention is small, and low noise is, it can be achieved that on-line maintenance.
Description
Technical field
The present invention relates to the check-valves applied in the fields such as petrochemical industry, natural gas, nuclear power, more specifically a kind of
The valve for automatically turning on or closing is flowed by medium itself, is mainly used to meet the axial-flow type of requirement of the system to medium back flow
Check-valves.
Background technique
In order to protect the safe operation of compressor or pump, stopping for medium refluence generally is prevented in compressor or pump discharge setting
Return valve.Common swing type, dual plate check valve, flap often in the presence of that cannot fully open, cause media flow it is unstable,
The problems such as pressure loss is big, noise is big, to influence the normal operation of large-scale compressor or pump, axial flow type check valve is because of its structure
The characteristics such as feature and good negotiability, low pressure loss, good water impact preventing ability can well solve this and ask
Topic.
At present there are two types of the axial flow type check valve of different structure form, one is disc valve flap structure axial-flow type non-returns
Valve, valve body are integral casting forming, and flap is arc single valve clack, are connect with valve rod, are made under medium effect and spring effect
Opening and closing movement；Another kind is circular ring shape, is also known as the ring disk shape flap axial flow type check valve, and valve body is similarly monoblock cast, and flap is
Ring disk-shaped structure, sealing surface are inside and outside ring, double sealing form, and flap is quick condition, are made by three or four guide pins
Support makees opening and closing movement under medium effect and spring effect.In Practical Project, the check-valves of both structure types is all obtained
It is widely applied, but exists simultaneously following problem:
First is that disc-shaped structure be usually only applicable in small-bore axial flow type check valve, this is because with the increase of bore,
The weight of round flap can greatly increase, merely by the subsequent guides stem of flap come support opening/shutting valve be it is highly difficult,
Although some manufacturing firms increase stem guiding also on front side of disc flap in large bore valves design to solve,
But the increased stem guiding on front side of flap, corresponding support construction will affect the negotiability of valve, while this kind of structure
In flap closing process, it may occur that strong collision generates loud noise, seriously affects the service life of valve.
Second is that circular ring shape axial flow type check valve because its sealing surface be inside and outside ring design, flap shape be ring disk-shaped structure, by
Power situation is improved, so that one third of the flap thickness less than other type axial flow type check valve flap thickness, flap is thick
Degree mitigates significantly, especially for more significant for large bore valves, but since its flap be in quick condition, without accurately
Guiding, and sealing surface use double containment, medium back flow be not enough to rapidly to flap formed certain impact and generate enough
Seal pressure when, valve often leaks, while in actual use, and the flap of the structure type is by one or two
Guide pin supports, the long-term valve opening and closing during, easily fatigue rupture and be broken, there are great security risks.
Third is that for the axial flow type check valve applied in Larger Engineering Projects, especially heavy-caliber axial flow type check valve is led to
Welding connecting mode often is used with the mounting means of pipeline, once valve occurs leaking or parts damages need replacing component or close
When sealing, for axial flow type check valve in the prior art, it is necessary to get off from pipe cutting by valve is whole, then repair and
Replacement, certainly will will cause huge economic loss.
Practice have shown that although axial flow type check valve in the prior art has their own advantages, but it is hidden also all to there is greatly safety
Suffer from, once valve leaks, huge economic loss will certainly be caused to entire engineering project.
Summary of the invention
The present invention is to provide that a kind of flow resistance is small to avoid above-mentioned deficiency of the prior art, low noise can be online
The axial flow type check valve of maintenance meets requirement of the system to medium back flow, guarantees the quality of engineering project to guarantee sealed reliable
And safety.
The present invention adopts the following technical scheme that in order to solve the technical problem
The present invention can the axial flow type check valve of on-line maintenance be structurally characterized in that: at the top of valve body, top opening is set,
Core assembly is that setting valve deck enables the valve body in top opening position merging valve body, and in the top opening of valve body
Closing；The core assembly is to be suspended on spool on spool bracket using supporting rib, and the spool bracket is fixed using spool
Snap ring fixes at the top opening position of valve body.
The present invention can the design feature of axial flow type check valve of on-line maintenance lie also in: the core assembly is included in spool
The flap that is supported using the helical spring of valve rod and the periphery for being sleeved on valve rod of front end, be arranged in parallel with guiding with the valve rod
Axis, the valve rod and guiding axis are slidably matched with the valve rod axis hole and guiding axis axis hole being arranged in spool correspondingly, make
The flap can move axially to spool side under pressure medium and realize valve opening, and answering using helical spring
So that the flap is carried out closing to runner under position and medium back flow collective effect and realizes non-return.
The present invention can the design feature of axial flow type check valve of on-line maintenance lie also in: in the spool, be located at valve rod
Tail portion damping hole is set, disk spring is placed in the damping hole, and using damping slide block as the spring base of disk spring,
The damping slide block is fixed at the tail end of valve rod, and damping slide block is to be slidably matched with damping hole.
The present invention can the design feature of axial flow type check valve of on-line maintenance lie also in: on the front end edge of the spool bracket
It is arranged radially fabrication hole, the arcuate front ends face of the flap can be butted on through the fabrication hole using tooling, make the flap
It gives up the throne towards spool side.
The present invention can the design feature of axial flow type check valve of on-line maintenance lie also in: the valve rod axis hole in the spool
Middle fixed setting first sliding axle set, the valve rod are slidably matched with the first sliding axle set；In the guiding axis of the spool
Second sliding axle set is fixedly installed in axis hole, the guiding axis is slidably matched with the second sliding axle set.
Compared with the prior art, the most significant achievement of the present invention is embodied in:
1, axial flow type check valve of the present invention can realize on-line maintenance or maintenance；
2, the present invention can effectively mitigate flap and valve body valve using spool end setting combination butterfly spring and damping slide block
Impact between seat reduces noise, while can meet at any time reflux requirement of the system to medium by adjusting buffer gap；
3, the present invention further realizes the accurate guiding of flap using guiding axis is arranged between flap and spool, guarantees
Seal request between flap and valve seat, while under the premise of not influencing valve negotiability, avoid flap in opening-closing process
In bending load caused by flap weight is individually born by valve rod, the reliability of valve is improved, especially to heavy caliber axis stream
Formula check-valves effect is more significant.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is core assembly longitudal section structural schematic diagram in the present invention；
Fig. 3 is core assembly sectional schematic diagram in the present invention；
Figure label: 1 flap, 2 guiding axis, 3 helical springs, 4 second sliding axle sets, 5 spools, 6 first sliding axle sets, 7
Valve rod, 8 disk springs, 9 supporting ribs, 10 damping slide blocks, 11 spool brackets；12 fabrication holes, 13 valve decks, 14 spool fixing clasps,
15 valve bodies, 16 core assemblies.
Specific embodiment
Referring to figure 1, figure 2 and figure 3, in the present embodiment can the structure type of axial flow type check valve of on-line maintenance be: in valve
The top of body 15 is arranged top opening, and core assembly 16 is in top opening position merging valve body 15, and on the top of valve body 15
Setting valve deck 13 enables valve body 15 to close in portion's opening；Core assembly 16 is that spool 5 is suspended on spool branch using supporting rib 9
On frame 11, spool bracket 11 is fixed at the top opening position of valve body 15 using spool fixing clasp 14.
In specific implementation, corresponding structure type also includes:
Core assembly 16 includes helical spring 3 using valve rod 7 with the periphery for being sleeved on valve rod 7 in the front end of spool 5
The flap 1 of support is arranged in parallel with guiding axis 2 with valve rod 7, valve rod 7 and guiding axis 2 correspondingly be arranged in spool 5
Valve rod axis hole and guiding axis axis hole are slidably matched, and move axially flap 1 can to 5 side of spool under pressure medium real
Existing valve opening, and using making flap 1 carry out closing realization to runner under the reset of helical spring 3 and medium back flow collective effect
Non-return.Do not deviate in movement travel in guiding axis 2 and guarantee flap 1 under the collective effect of valve rod 7, is further ensured that valve
Seal request between valve and valve seat, meanwhile, it can effectively avoid flap 1 individually to bear flap by valve rod 7 in opening-closing process
Bending load caused by weight improves the reliability of valve.
In order to guarantee 1 reliable in action of flap, dexterity of action is improved, the is fixedly installed in the valve rod axis hole in spool 5
One sliding shaft sleeve 6, valve rod 7 are slidably matched with first sliding axle set 6；Fixed setting second is sliding in the guiding axis axis hole of spool 5
Moving axis set 4, guiding axis 2 are slidably matched with second sliding axle set 4, and first sliding axle set 6 and second sliding axle set 4 play lubrication
Effect.
In the present embodiment, in spool 5, damping hole is set positioned at the tail portion of valve rod 7, disk spring is placed in damping hole
8, and using damping slide block 10 as the spring base of disk spring 8, damping slide block 10 is fixed at the tail end of valve rod 7, and damping is slided
Block 10 is to be slidably matched with damping hole.
In order to implement to dismount online, it is disposed radially fabrication hole 12 in the front end of spool bracket 11, runs through work using tooling
Skill hole 12 can be butted on before the arc of flap 1, and flap 1 is made to give up the throne towards 5 side of spool.
As shown in Fig. 2, first sliding axle set 6 and second sliding axle set 4 are fixed in spool 5, when assembling by valve rod 7
And guiding axis 2 screws in flap 1, then successively by helical spring 3, and is equipped with the loading spool 5 of flap 1 of valve rod 7 and guiding axis 2
In, so that guiding axis 2 is covered 4 with first sliding axle and be slidably matched, valve rod 7 is slidably matched with second sliding axle set 6, then in valve rod 7
Tail portion butterfly spring 8 and damping slide block 10 are successively installed constitute core assembly 16；Valve flowing channel has been assembled by valve body and spool
It is collectively formed after, runner can be designed to that venturi shape or other any shapes, valve deck are designed according to pressure rating as needed
At self-tightening sealing form or spacer bolt form.
As shown in Figure 1, using tooling, passing through the fabrication hole on spool bracket 11 when core assembly 16 is packed into valve body
12, it pushes flap 1 to draw close to spool 5, until core assembly 16 can be smoothly packed into from the top of valve body 15, then successively fills again
Enter spool fixing clasp 14, valve deck 13.
When valve be installed on need repairing on pipeline replace components when, successively remove valve deck 13 and spool fixing clasp
14, push flap 1 to draw close to spool 5 by the fabrication hole 12 on spool bracket 11 using tooling, until can be by spool group
Part 16 smoothly takes out at the top of valve body 15.
Axial flow type check valve of the present invention in working condition, before valve compressor or pump start to work when, flap 1 can compared with
It is just open under low pressure medium, in the case where smaller droop loss, medium can pass through valve body 15 and 5 shapes of spool
At channel；When compressor or pump stop working before valve, flap 1 is in the case where helical spring 3 and medium flow backwards percussion, rapidly
It closes, under 2 collective effect of valve rod 7 and guiding axis, is accurately positioned, realize reliable sealing, meanwhile, it is arranged by valve rod tail portion
Butterfly spring 8 and damping slide block 10 mitigate impact of the flap 1 to valve body and valve seat, the noise that flap impact generates is effectively reduced,
Improve the service life of valve.Damping depth can adjust in due course according to engineering project, i.e., when system requires medium back flow,
Buffer gap can be designed as needed, to meet reflux requirement of the system to medium, when system requirements medium back flow zero leakage,
It can also guarantee seal request as needed.
Axial flow type check valve sealed reliable of the present invention meets requirement of the system to medium back flow at any time, and flow resistance is small, low noise
Sound, at the same can be realized can on-line maintenance function reduce engineering to greatest extent under the premise of guaranteeing engineering project quality safety
Loss risk.
Claims (3)
1. one kind can on-line maintenance axial flow type check valve, it is characterized in that: valve body (15) top be arranged top opening, spool
Component (16) is that setting valve deck (13) makes in top opening position merging valve body (15), and in the top opening of valve body (15)
The valve body (15) is closed；The core assembly (16) is that spool (5) are suspended on spool bracket using supporting rib (9)
(11) on, the spool bracket (11) is fixed at the top opening position of valve body (15) using spool fixing clasp (14)；
The front end that the core assembly (16) is included in spool (5) utilizes the spiral of valve rod (7) and the periphery for being sleeved on valve rod (7)
The flap (1) of spring (3) support, is arranged in parallel with guiding axis (2), the valve rod (7) and guiding axis (2) with the valve rod (7)
It is slidably matched correspondingly with the valve rod axis hole and guiding axis axis hole being arranged in spool (5), makes the flap (1) in medium
It can be moved axially to spool (5) side under pressure and realize valve opening, and utilize the reset of helical spring (3) and medium
So that the flap (1) is carried out closing to runner under reflux collective effect and realizes non-return；
Fabrication hole (12) are disposed radially in the front end of the spool bracket (11), run through the fabrication hole (12) energy using tooling
It is enough butted on the arcuate front ends face of the flap (1), the flap (1) is made to give up the throne towards spool (5) side.
2. it is according to claim 1 can on-line maintenance axial flow type check valve, it is characterized in that: in the spool (5), position
In valve rod (7) tail portion be arranged damping hole, in the damping hole place disk spring (8), and using damping slide block (10) as
The spring base of disk spring (8), the damping slide block (10) are fixed at the tail end of valve rod (7), damping slide block (10) and resistance
Buddhist nun hole is to be slidably matched.
3. it is according to claim 1 can on-line maintenance axial flow type check valve, it is characterized in that: in the spool (5)
First sliding axle set (6) are fixedly installed in valve rod axis hole, the valve rod (7) is slidably matched with the first sliding axle set (6)；In
Second sliding axle set (4) are fixedly installed in the guiding axis axis hole of the spool (5), the guiding axis (2) and second sliding
Axle sleeve (4) is slidably matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710128793.9A CN106838386B (en) | 2017-03-06 | 2017-03-06 | It is a kind of can on-line maintenance axial flow type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710128793.9A CN106838386B (en) | 2017-03-06 | 2017-03-06 | It is a kind of can on-line maintenance axial flow type check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106838386A CN106838386A (en) | 2017-06-13 |
| CN106838386B true CN106838386B (en) | 2019-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710128793.9A Active CN106838386B (en) | 2017-03-06 | 2017-03-06 | It is a kind of can on-line maintenance axial flow type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106838386B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701739B (en) * | 2017-11-20 | 2024-04-09 | 北京航天动力研究所 | Multilayer complex shell and shell assembly |
| CN109958799A (en) * | 2017-12-25 | 2019-07-02 | 重庆昂宇自控仪表有限公司 | A kind of axial flow type check valve |
| WO2019209828A1 (en) * | 2018-04-23 | 2019-10-31 | Dayco Ip Holdings, Llc | A check valve insert defining an open position and check valves having same |
| CN108612883A (en) * | 2018-07-09 | 2018-10-02 | 君品集团有限公司 | Check-valves |
| CN108869808A (en) * | 2018-08-22 | 2018-11-23 | 上海冠龙阀门自控有限公司 | A kind of shaftless floating guiding valve |
| EP3712434B1 (en) | 2019-03-20 | 2021-12-22 | Danfoss A/S | Check valve damping |
| CN111761302B (en) * | 2020-05-29 | 2022-01-25 | 江苏神通阀门股份有限公司 | Technological method of cryogenic axial flow check valve with online maintenance function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3605802A (en) * | 1968-11-02 | 1971-09-20 | Itt | Check valve |
| CN202790713U (en) * | 2012-09-08 | 2013-03-13 | 环球阀门集团有限公司 | Noise elimination check valve |
| CN203322402U (en) * | 2013-06-24 | 2013-12-04 | 特技阀门集团有限公司 | Axial-flow check valve |
| CN204592433U (en) * | 2015-04-01 | 2015-08-26 | 上海阀门厂有限公司 | A kind of on-line maintenance structure of axial flow type check valve |
| CN205118348U (en) * | 2015-11-09 | 2016-03-30 | 五洲阀门有限公司 | Axial compressor check valve |
| CN105864469A (en) * | 2016-04-26 | 2016-08-17 | 苏州纽威阀门股份有限公司 | Axial-flow type check valve capable of replacing internal part on line |
-
2017
- 2017-03-06 CN CN201710128793.9A patent/CN106838386B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3605802A (en) * | 1968-11-02 | 1971-09-20 | Itt | Check valve |
| CN202790713U (en) * | 2012-09-08 | 2013-03-13 | 环球阀门集团有限公司 | Noise elimination check valve |
| CN203322402U (en) * | 2013-06-24 | 2013-12-04 | 特技阀门集团有限公司 | Axial-flow check valve |
| CN204592433U (en) * | 2015-04-01 | 2015-08-26 | 上海阀门厂有限公司 | A kind of on-line maintenance structure of axial flow type check valve |
| CN205118348U (en) * | 2015-11-09 | 2016-03-30 | 五洲阀门有限公司 | Axial compressor check valve |
| CN105864469A (en) * | 2016-04-26 | 2016-08-17 | 苏州纽威阀门股份有限公司 | Axial-flow type check valve capable of replacing internal part on line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106838386A (en) | 2017-06-13 |
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Address after: 230031 Hefei Changjiang Road, Shushan District, Anhui, No. 888 Patentee after: Hefei General Machinery Research Institute Co., Ltd. Address before: 230031 Hefei Changjiang Road, Shushan District, Anhui, No. 888 Patentee before: Hefei General Machinery Research Institute |