CN106812982A - A kind of liquefied natural gas ultra-low temperature axial flow check valve - Google Patents
A kind of liquefied natural gas ultra-low temperature axial flow check valve Download PDFInfo
- Publication number
- CN106812982A CN106812982A CN201510845938.8A CN201510845938A CN106812982A CN 106812982 A CN106812982 A CN 106812982A CN 201510845938 A CN201510845938 A CN 201510845938A CN 106812982 A CN106812982 A CN 106812982A
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve
- low temperature
- natural gas
- axial flow
- 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
- 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
-
- 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
-
- 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
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
Abstract
The invention belongs to valve, more particularly to a kind of liquefied natural gas ultra-low temperature axial flow check valve.It includes valve body, hollow circular cavity is set in valve body, valve seat and flap are set in the hollow cavity of valve body, and wherein flap is arranged on the center of valve seat, guide post is set in the center of flap, the other end of guide post is arranged in fairlead, guiding is set on guide holder, and guide holder is fixedly connected with the valve body, and described fairlead and guide holder is hollow circular cylinder, guiding is set in the cavity of guide holder, and spring is socketed on the guide bar.Its advantage is：Housing and leakage test are 0, while it is also 0 to have carried out the test of Room-temperature low-pressure helium leakage test, meets and require, performance is leading at home.
Description
Technical field
The invention belongs to valve, more particularly to a kind of liquefied natural gas ultra-low temperature axial flow check valve.
Background technology
At present, the consumption proportion of international petroleum and coal is on a declining curve always in recent years, only natural gas
Keep vigorous growth.It was predicted that natural gas will turn into substitution oil between 20 to 30 years futures
The first in the world energy.Axial flow type check valve is used as compressor or the visual plant of pump discharge, although in LNG
Under the working condition of low-temperature liquefaction natural gas, temporarily there is not using experience the country；But for axial flow type check valve
Have successfully a using experience used in gas operating mode pump discharge, and axial flow type check valve structure design, low temperature material
The aspects such as the cold performance test of material selection and other valves have accumulated rich experience, in technological layer
On tended to ripe, and form fairly perfect product line.
LNG ultra-low temperature axial flow check valves belong to one of liquefied natural gas (LNG) critical valves, technology
It is required that tight, safety coefficient is high, the country does not possess design, manufacturing capacity still, is developed country to my technology
Block, the product that juice is earned with expensive price.
The content of the invention
The defect that the object of the invention is directed to prior art provides a kind of liquefied natural gas ultralow temperature axial-flow type
Check-valves.
The present invention to achieve the above object, is adopted the following technical scheme that：A kind of liquefied natural gas ultralow temperature
Axial flow type check valve, including valve body, set hollow circular cavity in valve body, in the hollow cavity of valve body
Interior to set valve seat and flap, wherein flap is arranged on the center of valve seat, is set in the center of flap and led
To bar, the other end of guide post is arranged in fairlead, guiding be set on guide holder, guide holder with
Valve body is fixedly connected, and described fairlead and guide holder is hollow circular cylinder, and guiding is set on
In the cavity of guide holder, spring is socketed on the guide bar.
A kind of liquefied natural gas ultra-low temperature axial flow check valve as described above, wherein, described guiding
Seat is fixedly connected with the valve body by packing ring and bolt.
A kind of liquefied natural gas ultra-low temperature axial flow check valve as described above, wherein, described guiding
Bar is provided with key.
A kind of liquefied natural gas ultra-low temperature axial flow check valve as described above, wherein, valve body and valve seat
The part of connection is step-like, and the position being connected with valve seat in valve body is additionally provided with lip-shaped ring, back-up ring and screw.
The invention has the advantages that：LNG low temperature axial flow type check valve production domesticization project model machine 8 " -1500lb
Housing and leakage test are 0, while it is also 0 to have carried out the test of Room-temperature low-pressure helium leakage test.Go forward side by side
Go low temperature and normal temperature high voltage helium leakage test, low temperature leak rate is had a full house the requirement of BS6364 standard criterions,
Normal temperature is 0；Simultaneously by 1100 operating lifes circulate certification test (low temperature often act 100 times it is laggard
Low temperature of row and normal temperature high voltage helium leakage test), meet and require, performance is leading at home.
Brief description of the drawings
Fig. 1 is the structural representation of liquefied natural gas ultra-low temperature axial flow check valve of the present invention.
Fig. 2 is the schematic diagram of two style structure in conventional art.
Fig. 3 is the partial enlarged drawing of fairlead part.
Fig. 4 is the structural representation with Fig. 3 positions corresponding part in conventional art.
Fig. 5 is the structural formula schematic diagram of the anti-rotational part of flap.
Fig. 6 is valve body and the integrally formed structural representation of water diversion part.
In figure：1st, valve body；2nd, valve seat；3rd, lip-shaped ring；4th, back-up ring；5th, screw；6th, flap；7、
Spring；8th, packing ring；9th, bolt；10th, nameplate；11st, rivet；12nd, key；13rd, guide holder；14、
Fairlead.
Specific embodiment
As shown in Figure 1, a kind of liquefied natural gas ultra-low temperature axial flow check valve, including valve body 1,
Hollow circular cavity is set in valve body 1, valve seat 2 and flap 6 is set in the hollow cavity of valve body 1,
Wherein flap 6 is arranged on the center of valve seat 2, and guide post, guide post are set in the center of flap 6
The other end be arranged in fairlead 14, fairlead 14 is arranged on guide holder 13, guide holder 13 with
Valve body 1 is fixedly connected, and described fairlead 14 and guide holder 13 is hollow circular cylinder, is oriented to
Set 14 is arranged in the cavity of guide holder 13, and spring 7 is socketed on the guide bar.
As shown in accompanying drawing 1, accompanying drawing 3 and accompanying drawing 4, described guide holder 13 passes through packing ring 8 and bolt 9
It is fixedly connected with valve body 1.
As shown in accompanying drawing 1, accompanying drawing 3 and accompanying drawing 4, described guide post is provided with key 12.
As shown in accompanying drawing 1, accompanying drawing 5 and accompanying drawing 6, the part that valve body 1 is connected with valve seat 2 for step-like,
The position being connected with valve seat 2 in valve body 1 is additionally provided with lip-shaped ring 3, back-up ring 4 and screw 5.
The assembling process of the application liquefied natural gas ultra-low temperature axial flow check valve approximately as：
1) set is directed to be put into guide holder, and using welding positioning and guide holder firm welding；
2) it is directed to seat integrally to load in valve body with fairlead, and valve body water conservancy diversion is fixed on using bolt
Part；
3) load key in fairlead, and load spring, flap and guide post component are loaded in guide holder,
Flap is opened with frock；
3) lip-type packing is loaded on valve seat, and lip-shaped ring back-up ring is installed on integral type valve seat, and
Fixed using soket head cap screw；
4) integral type valve seat is pulled into circle frock using screw thread uniformly to rotate in inlet valve body valve seat, aperture positioning
It is good.
The content for additionally needing supplementary notes also includes：
1. integral type valve seat construction
Using integral type valve seat construction, lip-shaped ring and support base are installed after being better than valve seat, made using frock
Valve seat equably can be rotated into inlet valve body after flap standard-sized sheet, aperture step is positioned.Valve seat entrance point with
Valve flowing channel sequentially forms streamlined, and is effectively formed Venturi tube structure, and meeting operating mode runner will with impact
Ask.
2. given in the guide seat structure that flap is oriented to and set the guide sleeve structure of falling shape, it is ensured that the long-life uses.
Given in conventional guide seat structure and set the guide sleeve structure of falling shape, not only greatly increase flap guide post
Full guide frame, and the effectively fixed spring in a spring supporting chamber can be formed, obtain having for ultralow temperature sealing
Effect property, and ensure that the flap frequent movement long-life uses.
3. the anti-rotational design of flap
Use to be bonded between the guide post and guide holder of flap and connect, it is ensured that flap is in the stroke for opening and closing
In will not because fluid impact occur radial rotary action.Not only will not be to fluid by the structure design
Flow regime produces disturbance, also will not produce bigger abrasion to sealing surface.
4. valve body is integrally formed with water diversion part
Valve body shapes with water diversion part integrally casting, and rigidity is good, lightweight, is easy to safeguard, impact resistance
It is good, and can effectively overcome ultralow temperature space microdeformation.
5. the selection of material
Metal material
The material of valve body uses ASTM A351 CF8M
The material of flap uses ASTM A182 F316+ pile-up welding hard alloys
The material of guide post uses ASTM A182 F316+ pile-up welding hard alloys
The material of fairlead uses ASTM A182 F316+ pile-up welding hard alloys
The material of spring uses INCONEL X-718
Nonmetallic materials
Lip loop material uses PTFE+Elgiloy alloys
6. capability and performance
Stress intensity calculating is carried out to main bearer, to ensure that valve can pacify in normal conditions
Complete reliable operation, we have carried out design analysis to valve major part using the method for finite element analysis
And checking, analysis project includes：Static analysis, flow field analysis and Analysis of heat transfer.
And various type approval tests are carried out to valve, has been satisfied by requiring.
Content of the test includes
1. visual examination
2. the housing high pressure water pressure test
3. valve seat high-pressure water seal experiment
4. valve seat low pressure gas leakage test
5. low temperature and normal temperature high voltage helium leakage test
4. low temperature operating life cycling life test
5. normal temperature discharge coefficient test
LNG low temperature axial flow type check valve production domesticization project model machine 8 " -1500lb housings and leakage test are
0, while it is also 0 to have carried out the test of Room-temperature low-pressure helium leakage test.And carried out low temperature and normal temperature high voltage
Helium leakage test, low temperature leak rate have a full house BS6364 standard criterions requirement, normal temperature is 0；Simultaneously by 1100
(low temperature carries out a low temperature and normal temperature high voltage helium to secondary operating life circulation certification test after often acting 100 times
Airtight testing sealing), meet and require, performance is leading at home.
Claims (4)
1. a kind of liquefied natural gas ultra-low temperature axial flow check valve, including valve body (1), it is characterised in that
Hollow circular cavity is set in valve body (1), valve seat (2) is set in the hollow cavity of valve body (1)
With flap (6), wherein flap (6) is arranged on the center of valve seat (2), at the center of flap (6)
Place sets guide post, and the other end of guide post is arranged in fairlead (14), and fairlead (14) is set
On guide holder (13), guide holder (13) is fixedly connected with valve body (1), described fairlead (14)
Hollow circular cylinder is with guide holder (13), fairlead (14) is arranged on guide holder (13)
In cavity, spring (7) is socketed on the guide bar.
2. a kind of liquefied natural gas ultra-low temperature axial flow check valve as claimed in claim 1, its feature
It is：Described guide holder (13) is fixedly connected by packing ring (8) and bolt (9) with valve body (1).
3. a kind of liquefied natural gas ultra-low temperature axial flow check valve as claimed in claim 2, its feature
It is：Described guide post is provided with key (12).
4. a kind of liquefied natural gas ultra-low temperature axial flow check valve as claimed in claim 3, its feature
It is：The part that valve body (1) is connected with valve seat (2) is step-like, in valve body (1) and valve seat (2)
The position of connection is additionally provided with lip-shaped ring (3), back-up ring (4) and screw (5)..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510845938.8A CN106812982A (en) | 2015-11-27 | 2015-11-27 | A kind of liquefied natural gas ultra-low temperature axial flow check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510845938.8A CN106812982A (en) | 2015-11-27 | 2015-11-27 | A kind of liquefied natural gas ultra-low temperature axial flow check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106812982A true CN106812982A (en) | 2017-06-09 |
Family
ID=59102758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510845938.8A Pending CN106812982A (en) | 2015-11-27 | 2015-11-27 | A kind of liquefied natural gas ultra-low temperature axial flow check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106812982A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218421A (en) * | 2017-07-28 | 2017-09-29 | 江苏华洋新思路能源装备股份有限公司 | Passive relief panel of the nuclear power generating sets with drain function |
| CN109826983A (en) * | 2019-03-29 | 2019-05-31 | 成都成高阀门有限公司 | A kind of deep cooling axial flow type check valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4339617A1 (en) * | 1993-11-20 | 1995-05-24 | Vortex Gmbh Dt | Non-return valve for water circulation system with shutting-off element in valve housing |
| CN2823728Y (en) * | 2005-08-05 | 2006-10-04 | 重庆科特工业阀门有限公司 | Axial-flow vibration-damping check valve |
| CN203477484U (en) * | 2013-09-02 | 2014-03-12 | 上海开维喜阀门集团有限公司 | Ultralow temperature axial-flow type check valve |
| CN203743527U (en) * | 2014-01-07 | 2014-07-30 | 盐城市圣泰阀门有限公司 | Pressure sealing angle type lifting check valve with double anti-rotation structures comprising cylindrical pin and additional key |
| CN104197053A (en) * | 2014-09-24 | 2014-12-10 | 江苏诚功阀门科技有限公司 | Axial-flow type self-reliance pressure stabilizing valve |
| CN205278467U (en) * | 2015-11-27 | 2016-06-01 | 中核苏阀科技实业股份有限公司 | Ultra -low temperature axial -flow type check valve for liquefied natural gas |
-
2015
- 2015-11-27 CN CN201510845938.8A patent/CN106812982A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4339617A1 (en) * | 1993-11-20 | 1995-05-24 | Vortex Gmbh Dt | Non-return valve for water circulation system with shutting-off element in valve housing |
| CN2823728Y (en) * | 2005-08-05 | 2006-10-04 | 重庆科特工业阀门有限公司 | Axial-flow vibration-damping check valve |
| CN203477484U (en) * | 2013-09-02 | 2014-03-12 | 上海开维喜阀门集团有限公司 | Ultralow temperature axial-flow type check valve |
| CN203743527U (en) * | 2014-01-07 | 2014-07-30 | 盐城市圣泰阀门有限公司 | Pressure sealing angle type lifting check valve with double anti-rotation structures comprising cylindrical pin and additional key |
| CN104197053A (en) * | 2014-09-24 | 2014-12-10 | 江苏诚功阀门科技有限公司 | Axial-flow type self-reliance pressure stabilizing valve |
| CN205278467U (en) * | 2015-11-27 | 2016-06-01 | 中核苏阀科技实业股份有限公司 | Ultra -low temperature axial -flow type check valve for liquefied natural gas |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218421A (en) * | 2017-07-28 | 2017-09-29 | 江苏华洋新思路能源装备股份有限公司 | Passive relief panel of the nuclear power generating sets with drain function |
| CN107218421B (en) * | 2017-07-28 | 2019-04-12 | 江苏华洋新思路能源装备股份有限公司 | Passive relief panel of the nuclear power unit with drain function |
| CN109826983A (en) * | 2019-03-29 | 2019-05-31 | 成都成高阀门有限公司 | A kind of deep cooling axial flow type check valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170609 |