CN103994234A - Novel sealing structure for internal notch of control valve - Google Patents
Novel sealing structure for internal notch of control valve Download PDFInfo
- Publication number
- CN103994234A CN103994234A CN201410202331.3A CN201410202331A CN103994234A CN 103994234 A CN103994234 A CN 103994234A CN 201410202331 A CN201410202331 A CN 201410202331A CN 103994234 A CN103994234 A CN 103994234A
- Authority
- CN
- China
- Prior art keywords
- annular boss
- control valve
- sealing structure
- ring
- lower sleeve
- 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
Links
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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
- F16K3/265—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member with a sleeve sliding in the direction of the flow line
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention relates to a novel sealing structure for an internal notch of a control valve. The novel sealing structure comprises an upper sleeve (1), a lower sleeve (4) and a valve core (2), and is characterized in that one side, close to the valve core (2), of the lower end face of the upper sleeve (1) is provided with a first annular boss, the upper end face of the lower sleeve (4) is clamped to the first annular boss, a second annular boss is arranged on the inner wall, beside the upper end face, of the lower sleeve (4), and the second annular boss and the first annular boss make contact with the valve core (2), so that a sealing cavity is formed, an annular metal sealing ring (3) is installed in the sealing cavity, the cross section of the metal sealing ring (3) is in a semi-arc shape, and the opening of the semi-arc faces the valve core (2). After the trial use, it is proved that after the sealing structure is adopted for the control valve, the leakage class of the whole control valve can easily meet the requirement of the ANSI B16.104 V class.
Description
Technical field
The present invention relates to otch novel sealing structure in a kind of control valve.
Background technique
As shown in Figure 1, traditional sleeve control valve structure be mainly by the tension force of control piston seal ring and sleeve lining closely cooperate and the roughness of valve cage inwall realizes the control of leakage rate, opening at high temperature media by spool and sleeve seal face and piston packing ring produces certain leakage rate, if the tension force of piston packing ring is little or the roughness of sleeve and valve core sealed cover, form and position tolerance do not reach requirement, its leakage rate is difficult to meet the requirement of ANSI B16.104 IV level, and V level does not more just realize.And structure shown in Fig. 2 is the balanced seal coil structures sealing that adopts Teflon material to make between valve cage, this structure can realize the requirement of ANSI B16.104V level, but because balanced seal loop material serviceability temperature can only arrive 260 ℃, when medium temperature is higher, can not meet working condition requirement.
Summary of the invention
The object of this invention is to provide otch novel sealing structure in a kind of control valve, can realize control valve featuring rigid cutting-off and there is higher leakage class when high temperature and High Pressure Difference.
Otch novel sealing structure in a kind of control valve, comprise upper bush, lower sleeve and spool, its specialization is: the side near spool on the lower end surface of described upper bush is provided with the first annular boss, the upper-end surface of described lower sleeve is stuck on this annular boss, and be provided with the second annular boss on the other inwall in the upper-end surface of this lower sleeve, thereby this second annular boss all contacts formation Seal cage with described spool with aforesaid the first annular boss, the metal o-ring of ring-type is installed in sealing chamber, the cross section of this metal o-ring is semicircular arc, and the opening of this semicircular arc is towards spool.
Wherein the cross section of metal o-ring is semicircle, and its material is nickel base superalloy.
Wherein parallel between the axis of the first annular boss and upper bush, and vertical between the axis of the second annular boss and lower sleeve.
Through probationary certificate, control valve adopts after sealing configuration of the present invention, control valve complete machine control valve leakage class is easy to meet the requirement of ANSI B16.104V level, adopt this axial U-shaped shape metallic leak-proof structure, through overtesting, can be used in 420 ℃ of temperature, in the high temperature and high pressure steam pressure-adjusting control valve of pressure reduction 4.2MPa.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of background technique of the present invention;
Accompanying drawing 2 is the structural representation of background technique of the present invention;
Accompanying drawing 3 is structural representation of the present invention;
Accompanying drawing 4 is the partial enlarged drawing at A place in Fig. 3.
Embodiment
As Fig. 3, shown in 4, the present invention is otch novel sealing structure in a kind of control valve, comprise upper bush 1, lower sleeve 4 and spool 2, a side near spool 2 on the lower end surface of described upper bush 1 is provided with the first annular boss, the upper-end surface of described lower sleeve 4 is stuck on this annular boss, and be provided with the second annular boss on the other inwall in the upper-end surface of this lower sleeve 4, thereby this second annular boss all contacts formation Seal cage with described spool 2 with aforesaid the first annular boss, the metal o-ring 3 of ring-type is installed in sealing chamber, the cross section of this metal o-ring 3 is semicircular arc, and the opening of this semicircular arc is towards spool 2 (being left side in Fig. 4).
Wherein the cross section of metal o-ring 3 is semicircle, and its material is Inconel (X-) 750 nickel base superalloys.Parallel between the axis of other the first annular boss and upper bush 1, and vertical between the axis of the second annular boss and lower sleeve 4.
Working principle of the present invention is:
When control valve is closed, high temperature media enters from control valve right side, during through spool 2, sleeve, the interior side contacts of metal o-ring 3 of spool 2 sealing valve lines and interior otch U-shaped, and in metal o-ring 3 its U-shaped mouths of interior otch U-shaped, be subject to the pressure-acting of high-pressure medium, produce resiliently deformable, realize the featuring rigid cutting-off between spool 2 and sleeve.
Claims (3)
1. otch novel sealing structure in a control valve, comprise upper bush (1), lower sleeve (4) and spool (2), it is characterized in that: the side near spool (2) on the lower end surface of described upper bush (1) is provided with the first annular boss, the upper-end surface of described lower sleeve (4) is stuck on this annular boss, and be provided with the second annular boss on the other inwall in the upper-end surface of this lower sleeve (4), this second annular boss and aforesaid the first annular boss all with described spool (2) thus contact and form Seal cage, the metal o-ring (3) of ring-type is installed in sealing chamber, the cross section of this metal o-ring (3) is semicircular arc, and the opening of this semicircular arc is towards spool (2).
2. otch novel sealing structure in a kind of control valve as claimed in claim 1, is characterized in that: wherein the cross section of metal o-ring (3) is for semicircle, and its material is nickel base superalloy.
3. otch novel sealing structure in a kind of control valve as claimed in claim 1 or 2, is characterized in that: wherein parallel between the axis of the first annular boss and upper bush (1), and vertical between the axis of the second annular boss and lower sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410202331.3A CN103994234A (en) | 2014-05-14 | 2014-05-14 | Novel sealing structure for internal notch of control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410202331.3A CN103994234A (en) | 2014-05-14 | 2014-05-14 | Novel sealing structure for internal notch of control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103994234A true CN103994234A (en) | 2014-08-20 |
Family
ID=51308489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410202331.3A Pending CN103994234A (en) | 2014-05-14 | 2014-05-14 | Novel sealing structure for internal notch of control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103994234A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616706A (en) * | 2015-02-05 | 2015-05-13 | 喻杰 | Integrated pressure-resistant shell assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6935369B1 (en) * | 1999-10-27 | 2005-08-30 | Luxembourg Patent Company S.A. | High pressure oxygen valve |
| CN2916284Y (en) * | 2006-06-16 | 2007-06-27 | 天津精通控制仪表技术有限公司 | High performance cage type control valve resistant to high temperature and low temperature |
| CN201779286U (en) * | 2010-08-10 | 2011-03-30 | 上海阀特流体控制阀门有限公司 | Self-sealing hard double-valve seat with balanced valve spool |
| CN202659914U (en) * | 2012-07-17 | 2013-01-09 | 宁波埃美柯铜阀门有限公司 | Electric two-way valve core structure |
| CN203906849U (en) * | 2014-05-14 | 2014-10-29 | 吴忠仪表有限责任公司 | High-temperature tight-shutoff control valve internal-incision U-shaped seal structure |
-
2014
- 2014-05-14 CN CN201410202331.3A patent/CN103994234A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6935369B1 (en) * | 1999-10-27 | 2005-08-30 | Luxembourg Patent Company S.A. | High pressure oxygen valve |
| CN2916284Y (en) * | 2006-06-16 | 2007-06-27 | 天津精通控制仪表技术有限公司 | High performance cage type control valve resistant to high temperature and low temperature |
| CN201779286U (en) * | 2010-08-10 | 2011-03-30 | 上海阀特流体控制阀门有限公司 | Self-sealing hard double-valve seat with balanced valve spool |
| CN202659914U (en) * | 2012-07-17 | 2013-01-09 | 宁波埃美柯铜阀门有限公司 | Electric two-way valve core structure |
| CN203906849U (en) * | 2014-05-14 | 2014-10-29 | 吴忠仪表有限责任公司 | High-temperature tight-shutoff control valve internal-incision U-shaped seal structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616706A (en) * | 2015-02-05 | 2015-05-13 | 喻杰 | Integrated pressure-resistant shell assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203906849U (en) | High-temperature tight-shutoff control valve internal-incision U-shaped seal structure | |
| CN103994234A (en) | Novel sealing structure for internal notch of control valve | |
| CN203906850U (en) | High-temperature tight-shutoff control valve external-incision U-shaped seal structure | |
| CN103994243A (en) | Novel sealing structure of control valve | |
| CN203594845U (en) | Back-pressure valve | |
| CN203906810U (en) | High-temperature and high-pressure tight-shutoff control valve axial U-shaped metal seal structure | |
| CN103994242A (en) | Axial sealing structure of control valve | |
| CN103994241B (en) | A kind of outer otch novel sealing structure of control valve | |
| CN205781529U (en) | A kind of conduit coupling | |
| CN205064956U (en) | Multi -level sealed relief valve | |
| CN203963347U (en) | A kind of middle pressure high-performance gas-liquid rapid pipe joint without flow losses | |
| CN203906811U (en) | Piston type dynamic-seal high-temperature tight-shutoff control valve U-shaped metal seal structure | |
| CN202834236U (en) | Electromagnetic inlet valve | |
| CN105042123A (en) | Supercritical Y-shaped internally-hung hard self-sealing flap-turning check valve | |
| CN203730857U (en) | Elastic sealing safety valve | |
| CN104132136A (en) | Crankshaft oil hole cleaning and sealing device | |
| CN201896953U (en) | Axial flow control valve | |
| CN104976363A (en) | High-pressure valve | |
| CN204511958U (en) | A kind of mechanical seal device | |
| CN204729654U (en) | A kind of high pressure valve | |
| CN103644316A (en) | Self-cooled high-temperature-resistant valve | |
| CN205743833U (en) | A kind of high pressure VR blocks up | |
| CN203453497U (en) | Inflation valve | |
| CN205618684U (en) | High sealed valve | |
| CN104455512A (en) | Water valve in water softener |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140820 |