CN107575589A - A kind of super-pressure telescoping valve - Google Patents
A kind of super-pressure telescoping valve Download PDFInfo
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- CN107575589A CN107575589A CN201711036167.3A CN201711036167A CN107575589A CN 107575589 A CN107575589 A CN 107575589A CN 201711036167 A CN201711036167 A CN 201711036167A CN 107575589 A CN107575589 A CN 107575589A
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- valve
- bonnet
- sleeve
- super
- packing ring
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Abstract
The invention discloses a kind of super-pressure telescoping valve, including valve body, bonnet, sleeve, valve seat, valve rod and valve element, the valve body is provided with the valve pocket extended downwards from its upper end, the sleeve and the valve seat are installed in the bottom of the valve pocket, and the sleeve is located at the top of the valve seat, the lower end of the bonnet is stretched into the valve pocket, and spring is provided between the lower surface of the bonnet and the upper surface of the sleeve, and metallic packing ring is provided between the bonnet and the valve body.The present invention is simple in construction, it is connected by the way that the lower end of bonnet is stretched into valve pocket with valve body, and metallic packing ring is set between the two, set spring to realize both elastic connections between the lower surface of bonnet and the upper surface of sleeve, can effectively solve the problem that graphite gasket failure and high temperature jam problem at high temperature under high pressure.
Description
Technical field
The present invention relates to valve field, relates in particular to a kind of super-pressure telescoping valve.
Background technology
Existing a kind of telescopic steam evacuation valve, mainly including portions such as valve body, bonnet, sleeve, valve seat, valve rod and valve elements
Part, valve body are provided with the valve pocket extended downwards from its upper end, and sleeve and valve seat are installed in valve pocket, and sleeve is located at valve seat
Top, bonnet is connected to the upper end of valve body, its trim compression type structure, and by between sleeve upper surface and bonnet,
Wound form washer sealing is set between valve seat lower surface and valve body.
The steam evacuation valve of this structure, for having relatively stable performance under normal temperature and pressure operating mode, but in HTHP
Under, due to metal dilatancy at high temperature, cause sleeve to bend, easily cause valve jam, gasket failure, cause leakage.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of graphite gasket that can effectively solve the problem that at high temperature under high pressure
Failure and the super-pressure telescoping valve of high temperature jam problem.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：A kind of super-pressure telescoping valve, including valve
Body, bonnet, sleeve, valve seat, valve rod and valve element, the valve body are provided with the valve pocket extended downwards from its upper end, the sleeve
The bottom of the valve pocket is installed in the valve seat, and the sleeve is located at the top of the valve seat, the lower end of the bonnet
The top of the valve pocket is stretched into, and spring, the bonnet are provided between the lower surface of the bonnet and the upper surface of the sleeve
Metallic packing ring is provided between the valve body.
Further, the upper surface of the metallic packing ring and inner ring surface coordinate with the valve bonnet seal respectively, the gold
The outer ring surface and the valve seal for belonging to sealing ring coordinate, and the lower surface of the metallic packing ring is the low inside and high outside conical surface, and
The lower surface of the metallic packing ring also coordinates with the valve bonnet seal.
Further, the upper end of the metallic packing ring exceeds upwardly the upper surface of the valve body, and the metal is close
The outer ring surface upper end of seal ring is provided with flange.
Further, the spring is butterfly spring.
Further, there is compensation gap between the lower surface of the bonnet and the upper surface of the sleeve.
Further, the lower end of the valve body is provided with the outlet connected with the valve pocket, and vexed plate is provided with the outlet
With four points of rings, and four points of rings gear, in the outside of the vexed plate, the outer peripheral face of the vexed plate is provided with multiple sealing rings, each described
Sealing ring is separately installed with seal groove.
Further, the entrance connected with the valve pocket is provided with the middle part of the valve body.
Further, the bonnet is provided with the adapter cavity upwardly extended from its lower surface, the adapter cavity and the set
The combination of lumens of cylinder forms valve element accommodating cavity, and the valve element is located in the valve element accommodating cavity, and the valve rod passes through the bonnet
It is connected with the valve element, and the valve rod is slidably matched with the bonnet.
Further, the sleeve selects the labyrinth type sleeve of FTC flow directions.
Further, the labyrinth type sleeve is made up of 63 labyrinth type chips with 18 grades of decompressions, the labyrinth type
The Cv values of chip are 3.53.
Beneficial effects of the present invention are embodied in：
The present invention is simple in construction, is connected by the way that the lower end of bonnet is stretched into valve pocket with valve body, and set metal between the two
Sealing ring, set spring to realize both elastic connections between the lower surface of bonnet and the upper surface of sleeve, can effectively solve
Certainly graphite gasket failure at high temperature under high pressure and high temperature jam problem, the present invention is applicable not only to steam evacuation, and is applicable
Controlled in the break-make of other fluids.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of one embodiment of the invention.
Fig. 2 is the cross-sectional view of one embodiment of the invention.
Fig. 3 is enlarged drawing at A.
Fig. 4 is enlarged drawing at B.
Fig. 5 is the forging method schematic diagram of valve body in one embodiment of the invention.
In accompanying drawing the mark of each part for：1 valve body, 2 bonnets, 3 sleeves, 4 valve seats, 5 valve rods, 6 valve elements, 7 springs, 8 metals
Sealing ring, 81 flanges, 9 vexed plates, 91 sealing rings, 10 4 points of rings, a1 valve pockets, a2 adapter cavities, b1 outlets, b2 entrances.
Embodiment
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the application can be mutually combined.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4.
Super-pressure telescoping valve of the present invention, including valve body 1, bonnet 2, sleeve 3, valve seat 4, valve rod 5 and valve element 6, the valve body 1
The valve pocket a1 extended downwards from its upper end is provided with, the sleeve 3 and the valve seat 4 are installed under the valve pocket a1
Portion, and the sleeve 3 is located at the top of the valve seat 4, the top of the valve pocket a1 is stretched into the lower end of the bonnet 2, and described
Spring 7 is provided between the lower surface of bonnet 2 and the upper surface of the sleeve 3, gold is provided between the bonnet 2 and the valve body 1
Belong to sealing ring 8.
The lower end of bonnet is stretched into valve pocket and is connected with valve body by the present invention, and sets metallic packing ring between the two, gold
Belonging to sealing ring can be with the same trim of temperature change（That is bonnet, sleeve, valve seat）Thermal expansion together, it can remain good close
Seal effect；In addition, the present invention can form uniqueness by setting spring between the lower surface of bonnet and the upper surface of sleeve
High temperature backlash compensation structure.
At high operating temperatures, high-temperature expansion can occur valve for each parts, at work, because temperature difference be present, in valve
Part portion temperature is high, and expansion is big, and valve body, bonnet temperature are relatively low, and wall thickness is big, and deformation is small, trim occurs in high temperature
It is in expand holddown under state, in existing structure, because vertical direction has washer sealing, no yielding space, vertical direction can be made
Deformation be squeezed into transverse deformation, reduce so as to the hole size of sleeve and bonnet, cause valve jam, and the valve in the present invention
Elastic connection is realized using spring between lid and sleeve, high temperature deformation is compensated by the compression of spring, so as to solve height
Trim expansion compensation problem under temperature state.
In one embodiment, the material of the metallic packing ring 8 is A182-F5 steel alloys, be can effectively ensure that with temperature
Degree change is the same as trim together thermal expansion.Preferably, it is adapted to this metallic packing ring, the material of trim is closed for A182-F11
Jin Gang, the material of bonnet 2 is A182-F91 steel alloys.
In one embodiment, the surface dry of the metallic packing ring 8 is coated with one layer of molybdenum disulfide, that is, Dry-
Lube handling process.So handle, the surface of metallic packing ring has the minimum and invariable characteristic that rubs, operating temperature pole
Limit for height still has good self-lubricating property at high temperature under high pressure up to 650 DEG C, can reliably ensure the sealing property of valve,
Easily disassemble, avoid because HTHP causes flow of metal to be killed with valve body or bonnet in valve checking maintenance simultaneously.
So handling, metallic packing ring eliminates the demand to grease lubrication, and to related operating cost and production efficiency
Limiting factor, moreover it is possible to improve the reliability and security of equipment, and reduce maintenance cost and reduce influence to environment, energy
System reliability is enough improved, extends working life, reduces and safeguards, cooling requirement is reduced or without cooling, reduces because of excessive lubrication
Fire risk caused by fat, avoid the working face caused by lubricating grease wet and slippery, reduce the risk of Surface of Rod Bar quality impairments.
In one embodiment, the upper surface of the metallic packing ring 8 and inner ring surface seal with the bonnet 2 respectively coordinates,
The outer ring surface of the metallic packing ring 8 coordinates with the valve body 1 sealing, and the lower surface of the metallic packing ring 8 is low inside and high outside
The conical surface, and the lower surface of the metallic packing ring 8 also with the bonnet 2 seal coordinate.With the rise of valve pocket pressure, bonnet
Metallic packing ring is compressed upwards by valve pocket pressure, and is designed to above-mentioned this unique inclination angle type design, can ensure pressure
It is higher, upward pressure bigger, metallic packing ring pressure must be tighter, and sealing effectiveness is better, realizes the effect of pressure self-sealing.It is preferred that
Ground, the cross section of the metallic packing ring 8 is in a rectangular trapezoid, and sealing effectiveness is more preferable.
In one embodiment, the upper end of the metallic packing ring 8 exceeds upwardly the upper surface of the valve body 1, and described
The outer ring surface upper end of metallic packing ring 8 is provided with flange 81.So design can form sealing between flange and valve body upper surface
Ring dismantles groove, so as to facilitate the dismounting of metallic packing ring.
In one embodiment, the spring 7 is butterfly spring.Disk spring can provide maximum face with the volume of minimum
Pressure, ensure compensation effect.
In one embodiment, there is compensation gap, Fig. 4 between the lower surface of the bonnet 2 and the upper surface of the sleeve 3
Shown in middle h.Compensating the effect in gap is：Trim axial deformation space is given, is prevented at high temperature because Metal Hot Forming is led
Trim radial deformation is caused, influences valve event（If radial deformation can not be eliminated effectively, process of the valve element 6 in up and down motion
In can with trim interfere, it is stuck, valve can not act）.Preferably, gap 1.5mm is compensated, effect is preferable.
In one embodiment, the bonnet 2 is provided with the adapter cavity a2, the adapter cavity a2 upwardly extended from its lower surface
Valve element accommodating cavity is formed with the combination of lumens of the sleeve 3, the valve element 6 is located in the valve element accommodating cavity, and the valve rod 5 is worn
Cross the bonnet 2 to be connected with the valve element 6, and the valve rod 5 is slidably matched with the bonnet 2.In existing structure, valve element only exists
Moved in the inner chamber of sleeve, the present invention, which does above-mentioned design, can increase the range of movement of valve element.
In one embodiment, the lower end of the valve body 1 is provided with the outlet b1 connected with the valve pocket a1, pacifies in the outlet
Equipped with vexed plate 9 and four points of rings 10, and four points of rings 10 are kept off in the outside of the vexed plate 9, and the outer peripheral face of the vexed plate 9 is provided with more
Individual sealing ring, sealing ring 91 is separately installed with each seal groove.
When gateway reducing, when valve is connected with pipeline butt welding, the complete machine to valve is examined, experiment is brought greatly not
Just.For the valve of butt welding connection when examining, prior art is that the bolt hole needed for vexed plate is being reserved on valve body, is using brass etc.
Soft material realizes sealing with extruding at valve flange sealing.This mode is complicated, and cumbersome efficiency is low, it is also necessary to
More technique secondary bolt hole is processed on valve body, influences product design and layout designs.
And the present invention uses four cyclizations（Four cyclization necks are reserved in relevant position in outlet during casting）To fix vexed plate, and
Realized and sealed by sealing ring, the design that this vexed plate of unique plug-in is combined with four cyclizations, change traditional vexed plate peace
Dress mode, process during W.N flange valve examination is greatly simplified, facilitate complete machine and examine and test.
In one embodiment, the middle part of the valve body 1 is provided with the entrance b2 connected with the valve pocket a1.
In one embodiment, labyrinth type sleeve of the sleeve 3 from FTC flow directions.
Prior art is mostly the Combined socket of one or more porous type sleeve compositions, and this structure can only at most design
It is depressured to 3 grades, also has the sleeve of the multistage circulating disc that liquidates, but antihypertensive effect is poor, is unable to reach the requirement of the operating mode.
And the present invention can not only realize the decompression of more stages, and select FTC using the labyrinth type sleeve of FTC flow directions
Flow direction, can make high temperature fluid be looped around labyrinth type sleeve and valve element periphery all the time, a full set of trim is in keeping warm mode,
Valve will not raise rapidly when opening because of trim temperature causes valve jam（Valve system under this operating mode is in emergency circumstances
It is quick to open, to ensure the high temperature in whole vapour system, high steam rapid deflation, prevent pressure raises suddenly from causing entirely
System failure, in concrete condition, may several Nian Caihui open once, it is also possible to do not open all the time）.In addition, the labyrinth type set of FTC flow directions
For cylinder fluid intake at cylindrical place, the entrance channel at cylindrical place is minimum, then expands step by step.
In one embodiment, the labyrinth type sleeve 3 is made up of 63 labyrinth type chips with 18 grades of decompressions, the fan
The Cv values of palace formula chip are 3.53.So design, can maximize the labyrinth type chip circulation ability with 18 grades of decompressions,
Number of chips is reduced to greatest extent, so as to reduce valve stroke, advantageously ensures that the responsiveness of valve, and stroke is longer, closes
It is longer to the time opened, so design, the present invention is closed to opening and only needed 2 seconds.
In one embodiment, the material of the labyrinth type chip is nickel-base alloy INCONEL 718.From this material energy
Chip is enough set to still ensure that good mechanical property at 600 DEG C.
In one embodiment, the valve body 1 is made using solid forging material, can evade casting problem and casting risk,
Solid forging simultaneously, has evaded the welding and heat treatment of valve body special material, has reduced risk.
In specific implementation, referring to Fig. 5, the valve body 1 carries out solid forging using the blank of cylinder, and valve pocket uses
Offset design, i.e. blank center line are spaced a distance with valve pocket center line, in figure shown in M；And the 1 final foreign steamer of valve body
Exterior feature is prismatic in eight, and so can require cylindrical with design minimum wall thickness (MINI W.) is adapted.
Due to the limitation of the processing of forging valve body, main screw lift reaches 5 tons, and larger bear is brought to the pipeline of client
Load, inner chamber offset design and configuration design of the present invention using uniqueness, under the premise of valve minimum wall thickness (MINI W.) and working condition requirement is ensured,
Overall mass can be reduced to 3.5 tons, also reduce blank stock size, reduce product material and processing cost.
Super-pressure telescoping valve of the present invention disclosure satisfy that working condition requirement：The ton hour of emptying amount 210,525 DEG C of temperature, close pressure
Poor 135 kilograms, valve export Mach number is less than 0.4, and noise is less than 85 decibels, and valve pass is less than 2 seconds to speed is opened.
It should be understood that example as described herein and embodiment are not intended to limit the invention, this area only for explanation
Technical staff can make various modifications or change according to it, within the spirit and principles of the invention, any modification for being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of super-pressure telescoping valve, including valve body, bonnet, sleeve, valve seat, valve rod and valve element, the valve body is provided with from it
The valve pocket that upper surface extends downwardly, it is characterised in that：The sleeve and the valve seat are installed in the bottom of the valve pocket, and institute
The top that sleeve is located at the valve seat is stated, the top of the valve pocket, and the lower surface of the bonnet are stretched into the lower end of the bonnet
Spring is provided between the upper surface of the sleeve, metallic packing ring is provided between the bonnet and the valve body.
2. super-pressure telescoping valve according to claim 1, it is characterised in that：The upper surface of the metallic packing ring and inner ring
Face coordinates with the valve bonnet seal respectively, and the outer ring surface of the metallic packing ring coordinates with the valve seal, and the metal is close
The lower surface of seal ring is the low inside and high outside conical surface, and the lower surface of the metallic packing ring also coordinates with the valve bonnet seal.
3. super-pressure telescoping valve according to claim 2, it is characterised in that：The upper end of the metallic packing ring surpasses upwardly
Go out the upper surface of the valve body, and the outer ring surface upper end of the metallic packing ring is provided with flange.
4. according to the super-pressure telescoping valve described in claim 1 or 2 or 3, it is characterised in that：Do on the surface of the metallic packing ring
Formula is coated with one layer of molybdenum disulfide.
5. super-pressure telescoping valve according to claim 1 or 2, it is characterised in that：The spring is butterfly spring.
6. super-pressure telescoping valve according to claim 1 or 2, it is characterised in that：The lower surface of the bonnet and the set
There is compensation gap between the upper surface of cylinder.
7. super-pressure telescoping valve according to claim 1 or 2, it is characterised in that：The lower end of the valve body be provided with it is described
The outlet of valve pocket connection, vexed plate and four points of rings are installed in the outlet, and four points of rings gear is in the outside of the vexed plate, institute
The outer peripheral face for stating vexed plate is provided with multiple sealing rings, and sealing ring is separately installed with each seal groove.
8. super-pressure telescoping valve according to claim 1 or 2, it is characterised in that：The bonnet is provided with from its lower surface
The adapter cavity upwardly extended, the combination of lumens of the adapter cavity and the sleeve form valve element accommodating cavity, and the valve element is located at institute
State in valve element accommodating cavity, the valve rod is connected through the bonnet with the valve element, and the valve rod is slided with the bonnet and matched somebody with somebody
Close.
9. super-pressure telescoping valve according to claim 1 or 2, it is characterised in that：The sleeve selects the labyrinth of FTC flow directions
Formula sleeve.
10. super-pressure telescoping valve according to claim 9, it is characterised in that：The labyrinth type sleeve has 18 by 63
The labyrinth type chip of level decompression is formed, and the Cv values of the labyrinth type chip are 3.53.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711036167.3A CN107575589A (en) | 2017-10-30 | 2017-10-30 | A kind of super-pressure telescoping valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711036167.3A CN107575589A (en) | 2017-10-30 | 2017-10-30 | A kind of super-pressure telescoping valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107575589A true CN107575589A (en) | 2018-01-12 |
Family
ID=61040870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711036167.3A Pending CN107575589A (en) | 2017-10-30 | 2017-10-30 | A kind of super-pressure telescoping valve |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040239052A1 (en) * | 2003-05-28 | 2004-12-02 | Baumann Hans D. | Balanced-plug cage style control valve and bonnet seal assembly |
| CN2744902Y (en) * | 2004-08-16 | 2005-12-07 | 上海平安高压调节阀门厂 | Heavy pressure by-pass cooling water isolating valve |
| CN201680055U (en) * | 2009-12-11 | 2010-12-22 | 天津精通控制仪表技术有限公司 | Noise reduction type adjusting valve |
| CN103759050A (en) * | 2014-01-17 | 2014-04-30 | 哈电集团哈尔滨电站阀门有限公司 | Novel check valve controlled to be closed |
| CN207486084U (en) * | 2017-10-30 | 2018-06-12 | 无锡斯考尔自动控制设备有限公司 | Super-pressure telescoping valve |
-
2017
- 2017-10-30 CN CN201711036167.3A patent/CN107575589A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040239052A1 (en) * | 2003-05-28 | 2004-12-02 | Baumann Hans D. | Balanced-plug cage style control valve and bonnet seal assembly |
| CN2744902Y (en) * | 2004-08-16 | 2005-12-07 | 上海平安高压调节阀门厂 | Heavy pressure by-pass cooling water isolating valve |
| CN201680055U (en) * | 2009-12-11 | 2010-12-22 | 天津精通控制仪表技术有限公司 | Noise reduction type adjusting valve |
| CN103759050A (en) * | 2014-01-17 | 2014-04-30 | 哈电集团哈尔滨电站阀门有限公司 | Novel check valve controlled to be closed |
| CN207486084U (en) * | 2017-10-30 | 2018-06-12 | 无锡斯考尔自动控制设备有限公司 | Super-pressure telescoping valve |
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