CN105443780A - Novel sealing structure of control valve - Google Patents
Novel sealing structure of control valve Download PDFInfo
- Publication number
- CN105443780A CN105443780A CN201510588936.5A CN201510588936A CN105443780A CN 105443780 A CN105443780 A CN 105443780A CN 201510588936 A CN201510588936 A CN 201510588936A CN 105443780 A CN105443780 A CN 105443780A
- Authority
- CN
- China
- Prior art keywords
- sealing structure
- control valve
- spring energy
- ring
- 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
- 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
Abstract
The invention relates to a novel sealing structure of a control valve. The novel sealing structure comprises a valve element (5) and a valve seat (2). A sleeve (4) is installed on the valve seat (2) so as to guide the movement of the valve element (5). The sealing structure is characterized in that the outer wall of the side, close to the sleeve (4), of the top of the valve element (5) is provided with an annular groove; two spring energy storage sealing rings (8) are oppositely installed in the groove. According to results after trails, the novel sealing structure has the advantages that a simple and reliable bidirectional sealing structure of the control valve is composed of retainer rings, the spring energy storage sealing rings, a back-up ring, the valve element, the valve seat, the sleeve, a pressing plate and the like, so that better pressure bearing performance is achieved. In addition, the requirement of bidirectional tight sealing for the control valve is met, and sealing in both directions can reach the high leakage grade of ANSI/FCI 70-2V grade.
Description
Technical field
The present invention relates to a kind of control valve
novelsealing configuration.
Background technique
Traditional a kind of sleeve control valve, the medium flowing to spool epicoele from equalizing orifice mainly leans on the tension force of two-layer piston packing ring and closely cooperating of sleeve lining to seal.Its advantage is that sealing does not have directivity, can realize two way sealed; Shortcoming is to depend on roughness, the form and position tolerance of the tension force of metallic piston seal ring, sleeve and valve core sealed cover, and its leakage rate is generally difficult to meet ANSI/FCI70-2 IV grade and wants
ask, V grade does not more just realize.
And spring energy-storage seal ring (balanced seal circle) sealing structure adopting Teflon material to make between traditional another kind of sleeve control valve valve cage.Its advantage is sealing energy consumption, and the high-leakage grade that can realize ANSI/FCI70-2 V grade is wanted
ask; Shortcoming is that sealing has directivity, can only realize one-way sealing, wants for there being two way sealed
askoperating mode, then can not be suitable for.
Summary of the invention
The object of this invention is to provide a kind of control valve
novelsealing configuration, can realize reliable two way sealed.
A kind of control valve
novelsealing configuration, comprise spool and valve seat, this valve seat is provided with sleeve thus the motion of energy Pilot poppet, its specialization is: the groove being wherein provided with ring-type at spool top on the outer wall of sleeve side, is provided with two spring energy-storage seal rings in this groove dorsad.
Wherein between two spring energy-storage seal rings, back pressure ring is installed.
Wherein in the both sides up and down of two spring energy-storage seal rings, a back-up ring is installed separately, and each back-up ring is arc with the contacting point of spring energy-storage seal ring.
The wherein upper end open of groove, is provided with pressing plate at this opening, and this pressing plate is fixedly mounted on spool top.
Through probationary certificate, the invention has the advantages that: by back-up ring, spring energy-storage seal ring, back pressure ring, spool, valve seat, sleeve, pressing plate etc. jointly constitute one simply, reliably control valve Bidirectional seal structure, make it have higher withstand voltage properties, and achieve wanting of the two-way tight seal of control valve
ask, its two-way high-leakage grade that all can reach ANSI/FCI70-2 V grade.
Accompanying drawing explanation
accompanying drawing 1for structural representation of the present invention
figure;
accompanying drawing 2for partial enlargement of the present invention is illustrated
figure.
Embodiment
as Fig. 1,2shown in, the invention provides a kind of control valve
novelsealing configuration, comprise spool 5 and valve seat 2, this valve seat 2 is provided with sleeve 4 thus the motion of energy Pilot poppet 5, on the outer wall of sleeve 4 side, the groove of ring-type is wherein provided with at spool 5 top, two spring energy-storage seal rings 8 (namely both accumulation of energy circles dorsad) are installed dorsad in this groove, the specifically upper end open of groove, be provided with pressing plate 1 at this opening, this pressing plate 1 is fixedly mounted on spool 5 top by fastening piece thus is pressed in by two seal rings in groove and is easy for installation and maintenance.
Between these two spring energy-storage seal rings 8, back pressure ring 9 (dividing plate) is installed.In the both sides up and down of two spring energy-storage seal rings 8, (plastics) back-up ring 7 is installed separately in addition, and each back-up ring 7 is arc with the contacting point of spring energy-storage seal ring 8.
Embodiment 1:
as Fig. 1shown in, the present invention is a kind of control valve for two way sealed operating mode, comprises (plastics) back-up ring 7, spring energy-storage seal ring 8, back pressure ring 9, spool 5, valve seat 2, sleeve 4, pressing plate 1, hexagon socket cap head screw 6, Stem Mut 3 etc.
Sleeve 4 is installed on above valve seat 2, and the motion of Pilot poppet 5; As the open-shut device of control valve, spool 5 does reciprocating linear motion at sleeve 4 endoporus, control the switch of valve, spool 5 is provided with some metering orifices, be used for the pressure in the upper and lower chamber of balance valve core 5, therefore, except spool 5 valve seat 2, place can produce except certain leakage rate, medium also can flow to spool 5 epicoele by equalizing orifice, leaks from the gap location of spool 5 and sleeve 4.Be provided with darker groove with sleeve 4 cooperation place above spool 5, two spring energy-storage seal rings 8 are installed dorsad, then can realize the two way sealed at spool 5 and sleeve 4 place, if MEDIA FLOW to for low in and high out (
as Fig. 1shown in, enter the right side from a valve body left side and go out), pressure medium is that then spring energy-storage seal ring 8 seals, and on the contrary, if MEDIA FLOW is to being opposite direction, upwards, then spring energy-storage seal ring 8 seals pressure medium downwards.
In order to be increased in the sealing reliability under high temperature and high pressure differential environment, and reduce the possibility producing deflection when spring energy-storage seal ring 8 is installed, back pressure ring 9 is installed between spring energy-storage seal ring 8 and spring energy-storage seal ring 8, it is processed by PEEK (polyether-ether-ketone), there is good toughness, rigidity and corrosion resistance simultaneously, play great decompression.Spring energy-storage seal ring 8 upper-end surface and spring energy-storage seal ring 8 lower end surface are respectively provided with one by the back-up ring 7 of PTFE material, be arc with spring energy-storage seal ring 8 contact jaw, with spring energy-storage seal ring 8 accumulation of energy circle arc anastomosis, one end high pressure can be avoided to produce the other end spring energy-storage seal ring 8 and to destroy.After these spring energy-storage seal ring 8 parts install, compressed by hexagon socket cap head screw 6 by pressing plate 1, prevent from skidding off because of frictional force in movement process.
Claims (4)
1. a control valve novel sealing structure, comprise spool (5) and valve seat (2), this valve seat (2) is provided with sleeve (4) thus the motion of energy Pilot poppet (5), it is characterized in that: the groove being wherein provided with ring-type at spool (5) top on the outer wall of sleeve (4) side, two spring energy-storage seal rings (8) are installed dorsad in this groove.
2. a kind of control valve novel sealing structure as claimed in claim 1, is characterized in that: wherein between two spring energy-storage seal rings (8), be provided with back pressure ring (9).
3. a kind of control valve novel sealing structure as claimed in claim 1, it is characterized in that: wherein in the both sides up and down of two spring energy-storage seal rings (8), a back-up ring (7) is installed separately, and each back-up ring (7) contacting point that is upper and spring energy-storage seal ring (8) is arc.
4. as a kind of control valve novel sealing structure in claims 1 to 3 as described in any one, it is characterized in that: the wherein upper end open of groove, be provided with pressing plate (1) at this opening, this pressing plate (1) is fixedly mounted on spool (5) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510588936.5A CN105443780A (en) | 2015-09-16 | 2015-09-16 | Novel sealing structure of control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510588936.5A CN105443780A (en) | 2015-09-16 | 2015-09-16 | Novel sealing structure of control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105443780A true CN105443780A (en) | 2016-03-30 |
Family
ID=55554299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510588936.5A Pending CN105443780A (en) | 2015-09-16 | 2015-09-16 | Novel sealing structure of control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105443780A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040145120A1 (en) * | 2003-01-23 | 2004-07-29 | Faas Wayne R. | Valve plug seal assembly |
| CN203374844U (en) * | 2013-06-21 | 2014-01-01 | 浙江迪元仪表有限公司 | Adjusting valve |
| CN203431212U (en) * | 2013-09-02 | 2014-02-12 | 浙江金锋自动化仪表有限公司 | Sleeve adjusting valve with energy storage seal ring |
| CN203560487U (en) * | 2013-10-30 | 2014-04-23 | 苏州纽威阀门股份有限公司 | Ball valve |
| CN104676012A (en) * | 2015-02-10 | 2015-06-03 | 无锡智能自控工程股份有限公司 | Bilateral balanced sealing ring component for sleeve valve |
| CN205244403U (en) * | 2015-09-16 | 2016-05-18 | 吴忠仪表有限责任公司 | Two way seal control valve |
-
2015
- 2015-09-16 CN CN201510588936.5A patent/CN105443780A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040145120A1 (en) * | 2003-01-23 | 2004-07-29 | Faas Wayne R. | Valve plug seal assembly |
| CN203374844U (en) * | 2013-06-21 | 2014-01-01 | 浙江迪元仪表有限公司 | Adjusting valve |
| CN203431212U (en) * | 2013-09-02 | 2014-02-12 | 浙江金锋自动化仪表有限公司 | Sleeve adjusting valve with energy storage seal ring |
| CN203560487U (en) * | 2013-10-30 | 2014-04-23 | 苏州纽威阀门股份有限公司 | Ball valve |
| CN104676012A (en) * | 2015-02-10 | 2015-06-03 | 无锡智能自控工程股份有限公司 | Bilateral balanced sealing ring component for sleeve valve |
| CN205244403U (en) * | 2015-09-16 | 2016-05-18 | 吴忠仪表有限责任公司 | Two way seal control valve |
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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 |
Application publication date: 20160330 |
|
| RJ01 | Rejection of invention patent application after publication |