CN109826983A - A kind of deep cooling axial flow type check valve - Google Patents
A kind of deep cooling axial flow type check valve Download PDFInfo
- Publication number
- CN109826983A CN109826983A CN201910251923.7A CN201910251923A CN109826983A CN 109826983 A CN109826983 A CN 109826983A CN 201910251923 A CN201910251923 A CN 201910251923A CN 109826983 A CN109826983 A CN 109826983A
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- Prior art keywords
- valve
- valve seat
- ring
- flap
- axial flow
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- 238000001816 cooling Methods 0.000 title claims abstract description 13
- 238000012856 packing Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 abstract description 11
- 230000036316 preload Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Check Valves (AREA)
Abstract
The present invention relates to a kind of deep cooling axial flow type check valves, it including valve body, valve seat pressure ring, valve seat lock ring, is fixed on the intracorporal guide holder of the valve, the bushing being fixed on the guide holder, the valve shaft connecting with the casing slip, the flap being fixedly connected with valve shaft one end and is mounted on the intracorporal valve seat of valve, the spring worked as a buffer simultaneously for resetting flap is equipped between flap and bushing；It is equipped with one section of internal screw thread in the valve chamber of valve body, the external screw thread being adapted to the internal screw thread is equipped on valve seat pressure ring and valve seat lock ring, valve seat pressure ring screws in valve chamber and holds out against valve seat, and valve seat lock ring screws in valve chamber and holds out against valve seat pressure ring.The present invention uses leading portion threaded pre-tightening, and the double thread connecting structure of back segment locking thread, not only structure design is simple, but also can effectively increase the sealing reliability of valve, extends valve service life；Pretightning force is provided jointly by valve seat pressure ring and valve seat lock ring, it is possible to provide the enough seal preloads of gasket ring guarantee the sealing of valve chamber and valve seat part.
Description
Technical field
The present invention relates to valve technology field more particularly to a kind of deep cooling axial flow type check valves.
Background technique
As shown in Figure 1, conventional one check-valves, mainly by valve body (serial number 8), flap (serial number 4), valve shaft (serial number 5),
The composition such as valve seat (serial number 3), valve seat pressure ring (serial number 2), bushing (serial number 7), spring (serial number 6), valve seat filler (serial number 12).
Axial flow type check valve working principle: determined by the pressure difference of valve inlet end and outlet end flap unlatching and
It closes.When the pressure of input end is greater than the summation of pressures cycle expansion spring force of outlet end, flap is opened.As long as there is pressure
Difference exists, and flap is just constantly in open state, but open degree is determined by the size of pressure difference.When outlet pressures and spring bullet
When the summation of power is greater than input end pressure difference, flap then closes and is constantly in closed state.
The major defect of conventional one check-valves has: after slamming for several times, valve seat pressure ring is easy to loosen, so as to cause
Valve seat packing seal pretightning force is insufficient, seriously affects sealing performance；In addition, flap can be right under the impact of high speed reflux medium
Valve seat causes fierce slamming, and sealing surface, which is be easy to cause, to be washed away and wear.
Summary of the invention
The present invention is intended to provide deep cooling axial flow type check valve, can prevent media impingement rear valve base pressure ring thread looseness, guarantee
Sealing effect.
In order to achieve the above objectives, The technical solution adopted by the invention is as follows:
A kind of deep cooling axial flow type check valve, including valve body, valve seat pressure ring, valve seat lock ring, it is fixed on that the valve is intracorporal to lead
To seat, the bushing being fixed on the guide holder, the valve shaft being connect with the casing slip, the valve being fixedly connected with valve shaft one end
Valve and it is mounted on the valve seat to be matched in valve body with the flap, is equipped between the flap and bushing for resetting flap
The spring worked as a buffer simultaneously；It is equipped with one section of internal screw thread in the valve chamber of the valve body, is all provided on valve seat pressure ring and valve seat lock ring
There is the external screw thread being adapted to the internal screw thread, valve seat pressure ring screws in valve chamber and holds out against valve seat, and valve seat lock ring screws in valve chamber and holds out against valve seat
Pressure ring.
Further, lip-type packing is equipped between valve seat and valve body.
Further, valve seat outer wall is hierarchic structure, and the body cavity has and the matched hierarchic structure of valve seat, the lip
Shape sealing ring is mounted on cascaded surface.
Further, gasket ring is equipped between valve seat and valve body.
Further, the gasket ring is mounted on the cascaded surface of valve seat.
Wherein, the spring pocket is on valve shaft.
Compared with prior art, the invention has the following advantages:
The present invention uses leading portion threaded pre-tightening, and the double thread connecting structure of back segment locking thread, not only structure design is simple,
It is easy to operate, and the sealing reliability of valve can be effectively increased, extend valve service life；By valve seat pressure ring and valve seat
Lock ring provides pretightning force jointly, it is possible to provide the enough seal preloads of gasket ring guarantee the sealing of valve chamber and valve seat part.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the prior art；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is the partial enlarged view in Fig. 2 at I；
In figure: 1- valve seat lock ring, 2- valve seat pressure ring, 3- valve seat, 4- flap, 5- valve shaft, 6- spring, 7- bushing, 8- valve body,
9- guide holder, 10- valve seat gasket ring, 11- lip-type packing 12- valve seat filler.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.
As shown in Figure 2,3, deep cooling axial flow type check valve disclosed by the invention, including valve body 8, valve seat lock ring 1, valve seat pressure ring
2, the guide holder 9 that is fixed in the valve body 8, is slidably connected with the bushing 7 at the bushing 7 being fixed on the guide holder 9
Valve shaft 5, the flap 4 being fixedly connected with 5 one end of valve shaft and it is mounted on the valve seat 3 to be matched in valve body 8 with the flap 4, valve
The spring 6 worked as a buffer simultaneously for resetting flap 4 is equipped between valve 4 and bushing 7, spring 6 is sleeved on valve shaft 5.
It is equipped with one section of internal screw thread in the valve chamber of valve body 8, is equipped on valve seat lock ring 1 and valve seat pressure ring 2 and is adapted to internal screw thread
External screw thread, valve seat pressure ring 2 screws in valve chamber and holds out against valve seat 3, and valve seat lock ring 1 screws in valve chamber and holds out against valve seat pressure ring 2, forms leading portion
Threaded pre-tightening, the double thread connecting structure of back segment locking thread.Spanner slot is equipped on valve seat pressure ring 2 and valve seat lock ring 1, it is convenient
It screws in.
Lip-type packing 11 and gasket ring 10 are equipped between valve seat 3 and valve body 8.3 outer wall of valve seat is hierarchic structure, valve body
8 inner cavities have with the matched hierarchic structure of valve seat 3, lip-type packing 11 and gasket ring 10 are mounted on different cascaded surfaces, close
Packing ring 10 is between valve seat pressure ring 2 and lip-type packing 11.
When installation, lip-type packing 11 and gasket ring 10 are inserted in valve seat 3 and constitute valve component, are packed into valve chamber together, so
Afterwards, by valve seat pressure ring 2 screw in valve chamber, hold out against valve seat 3, to provide gasket ring 10 enough seal preloads, guarantee valve chamber with
The sealing of valve seat part；Then, valve seat lock ring 1 screws in valve chamber, valve seat pressure ring 2 is pressed closer, to prevent by media impingement rear valve base
2 thread looseness of pressure ring causes 10 pretightning force of gasket ring insufficient, to influence sealing effect.The present invention is pre- using leading portion screw thread
Tightly, the double thread connecting structure of back segment locking thread, not only structure design is simple, easy to operate, and can effectively increase valve
The sealing reliability of door, extends valve service life.
Certainly, the present invention can also have other numerous embodiments, without deviating from the spirit and substance of the present invention,
Those skilled in the art can make various corresponding changes and modifications, but these corresponding changes and change according to the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (6)
1. a kind of deep cooling axial flow type check valve, including valve body, it is fixed on the intracorporal guide holder of the valve, is fixed on the guide holder
On bushing, the valve shaft being connect with the casing slip, the flap that is fixedly connected with valve shaft one end and be mounted in valve body with
The valve seat that the flap matches is equipped with the bullet worked as a buffer simultaneously for resetting flap between the flap and bushing
Spring, it is characterised in that: further include valve seat pressure ring and valve seat lock ring, be equipped with one section of internal screw thread, valve seat pressure in the valve chamber of the valve body
The external screw thread being adapted to the internal screw thread is equipped on ring and valve seat lock ring, valve seat pressure ring screws in valve chamber and holds out against valve seat, valve seat lock
Ring screws in valve chamber and holds out against valve seat pressure ring.
2. deep cooling axial flow type check valve according to claim 1, it is characterised in that: it is close to be equipped with lip shape between valve seat and valve body
Seal.
3. deep cooling axial flow type check valve according to claim 2, it is characterised in that: valve seat outer wall is hierarchic structure, described
Body cavity has to be mounted on cascaded surface with the matched hierarchic structure of valve seat, the lip-type packing.
4. deep cooling axial flow type check valve according to claim 1,2 or 3, it is characterised in that: be equipped between valve seat and valve body
Gasket ring.
5. deep cooling axial flow type check valve according to claim 4, it is characterised in that: the gasket ring is mounted on valve seat
On cascaded surface.
6. deep cooling axial flow type check valve according to claim 1, it is characterised in that: the spring pocket is on valve shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910251923.7A CN109826983A (en) | 2019-03-29 | 2019-03-29 | A kind of deep cooling axial flow type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910251923.7A CN109826983A (en) | 2019-03-29 | 2019-03-29 | A kind of deep cooling axial flow type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109826983A true CN109826983A (en) | 2019-05-31 |
Family
ID=66873790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910251923.7A Pending CN109826983A (en) | 2019-03-29 | 2019-03-29 | A kind of deep cooling axial flow type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109826983A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561115A (en) * | 2019-10-23 | 2019-12-13 | 江苏神通阀门股份有限公司 | assembly method of support guide shaft structure of cryogenic axial flow check valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030196698A1 (en) * | 2002-04-17 | 2003-10-23 | Metal Industries Research & Development Centre | Axial flow control valve |
| RU2009133491A (en) * | 2009-09-07 | 2011-03-20 | Евгений Николаевич Бокач (RU) | AXIAL FLOW VALVE FOR ENERGY OBJECTS |
| CN203297284U (en) * | 2013-04-01 | 2013-11-20 | 中国北方车辆研究所 | Thread anti-loose structure with double interlocked nuts |
| CN204140963U (en) * | 2014-09-23 | 2015-02-04 | 方正阀门集团(温州)机械制造有限公司 | Axial flow type check valve |
| CN204201158U (en) * | 2014-11-05 | 2015-03-11 | 浙江海洋学院 | A kind of double spool eccentric rotary regulating valve |
| CN106812982A (en) * | 2015-11-27 | 2017-06-09 | 中核苏阀科技实业股份有限公司 | A kind of liquefied natural gas ultra-low temperature axial flow check valve |
| CN207661161U (en) * | 2017-11-27 | 2018-07-27 | 重庆昂宇自控仪表有限公司 | A kind of high-performance eccentric rotary valve |
| CN209743687U (en) * | 2019-03-29 | 2019-12-06 | 成都成高阀门有限公司 | Cryogenic axial flow type check valve |
-
2019
- 2019-03-29 CN CN201910251923.7A patent/CN109826983A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030196698A1 (en) * | 2002-04-17 | 2003-10-23 | Metal Industries Research & Development Centre | Axial flow control valve |
| RU2009133491A (en) * | 2009-09-07 | 2011-03-20 | Евгений Николаевич Бокач (RU) | AXIAL FLOW VALVE FOR ENERGY OBJECTS |
| CN203297284U (en) * | 2013-04-01 | 2013-11-20 | 中国北方车辆研究所 | Thread anti-loose structure with double interlocked nuts |
| CN204140963U (en) * | 2014-09-23 | 2015-02-04 | 方正阀门集团(温州)机械制造有限公司 | Axial flow type check valve |
| CN204201158U (en) * | 2014-11-05 | 2015-03-11 | 浙江海洋学院 | A kind of double spool eccentric rotary regulating valve |
| CN106812982A (en) * | 2015-11-27 | 2017-06-09 | 中核苏阀科技实业股份有限公司 | A kind of liquefied natural gas ultra-low temperature axial flow check valve |
| CN207661161U (en) * | 2017-11-27 | 2018-07-27 | 重庆昂宇自控仪表有限公司 | A kind of high-performance eccentric rotary valve |
| CN209743687U (en) * | 2019-03-29 | 2019-12-06 | 成都成高阀门有限公司 | Cryogenic axial flow type check valve |
Non-Patent Citations (1)
| Title |
|---|
| 郭谆钦等: "机械设计基础", 冶金工业出版社, pages: 259 - 260 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561115A (en) * | 2019-10-23 | 2019-12-13 | 江苏神通阀门股份有限公司 | assembly method of support guide shaft structure of cryogenic axial flow check valve |
| CN110561115B (en) * | 2019-10-23 | 2021-05-28 | 江苏神通阀门股份有限公司 | Assembly method of support guide shaft structure of cryogenic axial flow check valve |
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