CN102808956A - Multistage high-pressure buffering angular quickly opened stop valve - Google Patents
Multistage high-pressure buffering angular quickly opened stop valve Download PDFInfo
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- CN102808956A CN102808956A CN2012102878100A CN201210287810A CN102808956A CN 102808956 A CN102808956 A CN 102808956A CN 2012102878100 A CN2012102878100 A CN 2012102878100A CN 201210287810 A CN201210287810 A CN 201210287810A CN 102808956 A CN102808956 A CN 102808956A
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- valve rod
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- aligning axle
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Abstract
The invention relates to a multistage high-pressure buffering angular quickly opened stop valve with an annular spring. The stop valve comprises a valve stem, a valve seat and a valve spool, wherein the valve stem is connected with a pneumatic actuator through a piston shaft; the valve seat and the valve spool are arranged in a valve body at the head of the valve stem; the valve spool is of a hollow structure, a guiding self-aligning shaft is arranged in a cavity of the valve spool and is provided with the annular spring which absorbs impact load of the valve spool and the valve seat, a concave spherical surface is arranged at an end, which is connected with the head of the valve stem, of the guiding self-aligning shaft, and the concave spherical surface of the guiding self-aligning shaft and a convex spherical surface of the head of the valve stem are assembled correspondingly; and the tail end of the valve stem and the piston shaft are connected integrally through a disc coupler A and a disc coupler B, and a buffering gasket which strengthens buffering and bending stress between the piston shaft and the valve stem is arranged between the disc coupler A and the disc coupler B. A sealing structure is reasonable, breakage fault of the valve stem is eliminated, and the valve spool and the valve seat can be matched correctly. Besides, sealing parts can be replaced without halt, and production cost is reduced.
Description
Technical field
The present invention relates to valve, refer in particular to a kind of multi-buffer high pressure angie type that has annular spring and open stop valve soon.
Background technique
Domestic high pressure angie type in usefulness is opened stop valve soon at present, and three kinds of common faults are arranged: 1) valve stem crack, valve stem crack are fatefulue faults, in case take place, valve total failure must roll off the production line immediately, has a strong impact on production.It is work under condition of high voltage that the high pressure angie type is opened stop valve soon, and design pressure is up to 15MPa, and requires valve opening and close rapidly, and switching time is about 0.1 second.Valve is when open and close (especially closing), and moment impact load is huge, valve rod and valve seat insert bear for a long time huge moment impact load produce tired, thereby cause valve stem crack, 2) valve seat insert damages easily, needs periodic replacement.Valve seat insert is that expensive nonmetallic material are processed, i.e. PBI (polyphenyl and ether are recovered azoles), and this material damages easily.3) valve seat and spool plane sealing structure are easy to generate leakage.Domestic high pressure angie type in usefulness is opened stop valve soon and is adopted plane sealing at present, and the sealing surface area is big, and local injustice all can cause leakage on sealing surface.
Summary of the invention
The objective of the invention is to improve and innovate, provide a kind of the solution to cause valve stem crack, spool and valve seat to be difficult to the multi-buffer high pressure angie type of a medium difficult problem is opened stop valve soon because of impulsive load is excessive to the shortcoming that exists in the background technique and problem.
The present invention constructs a kind of valve rod that is connected with pneumatic actuator through piston shaft that comprises, is arranged on valve seat and spool in the valve rod head valve body, wherein:
Spool is a hollow-core construction; Guiding aligning axle is set in the cavity; Guiding aligning axle is provided with the annular spring that absorbs spool and valve seat impulsive load, and wherein lead aligning axle and valve rod head connecting end are set to concave spherical surface, and the corresponding assembling of protruding sphere of concave spherical surface with the valve rod head of the aligning axle that leads;
The tail end of said valve rod links into an integrated entity through disc coupling A and disc coupling B and piston shaft, and is provided with between disc coupling A and the disc coupling B and strengthens that piston shaft cushions with valve rod and the cushion pad of flexural stress.
The present invention has the following advantages and beneficial effect:
Sealing configuration of the present invention changes linear sealing into by face seal, and sealing configuration is more reasonable, reaches zero leakage fully; Adopt damping mechanism, the impact force that acts on the strong load on the valve rod is that buffer element absorbs, and has got rid of the fault of valve stem crack.The concave spherical surface of guiding aligning axle cooperates ability automatic capturing center with the protruding sphere of valve rod head, make spool and valve seat always remain on correct cooperation position.Spool of the present invention and valve seat all adopt high-quality stainless steel and abrasion resistance alloy, need not to shut down to change Sealing, have reduced cost of production.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Can know by Fig. 1, the present invention includes the valve rod 8 that is connected with pneumatic actuator 14 through piston shaft 13, be arranged on valve seat 1 and spool 2 in the valve rod 8 head valve bodies 9, wherein:
The tail end of said valve rod 8 links into an integrated entity through disc coupling A10 and disc coupling B12 and piston shaft 13, and is provided with the cushion pad 11 that strengthens piston shaft 13 and valve rod 8 bufferings and flexural stress between disc coupling A10 and the disc coupling B12.
Design principle of the present invention:
1, the present invention is provided with the annular spring damping mechanism in spool, and this annular spring compact structure, bumper and absorbing shock are functional, can cushion valve rod and bear huge moment impact load.Connect piston shaft and valve rod with disc coupling simultaneously, between two disc couplings, add cushion pad; The existing pooling feature of this structure can avoid piston shaft and valve rod disalignment between two parts, to produce additional bending stress again.Through above improvement, stopped the critical failure of valve stem crack fully.
2, the sealing of spool of the present invention and valve seat changes ball face sealing into by plane sealing, avoids because of the plane sealing area is big the dielectric leakage that local injustice causes on sealing surface.
3, the present invention is the design of spool automatic capturing valve seat; The valve rod head is protruding sphere; The concave spherical surface that the end face of the guiding aligning axle that cooperates with it is designed to, when valve rod and valve seat shaft axis disalignment, spool cooperates sphere automatic capturing valve seat through lead aligning axle and valve rod; Reach spool, valve seat best fit, reduced component machining accuracy and cost of production simultaneously.
Structural principle of the present invention:
Basic building block of the present invention comprises valve seat, spool, annular spring, guiding aligning axle, O RunddichtringO, half snap ring, clamping sleeve, valve rod, valve body etc.; Annular spring is installed on the guiding aligning axle; Guiding aligning axle is installed in the hollow spool; Clamping sleeve makes the sphere of valve rod head and the concave spherical surface of guiding aligning axle contact through half snap ring, but the spool automatic capturing is aimed at valve seat, and valve rod top impulsive load is absorbed by the annular spring buffering.
Assembly structure, as shown in Figure 1, the sealing surface of valve seat 1 and spool 2 is isometrical sphere; Annular spring 3 is installed on the guiding aligning axle 4, and two parts are together packed in the spool 2, and dress O shape rubber seal 5 gets in the annular spring 3 to avoid impurity etc. in the groove of guiding aligning axle 4; Valve rod 8 heads have annular groove; Adorn half snap ring 6 in the groove, clamping sleeve 7 usefulness screw threads cooperate with spool 2, rotatably compress cover 7 sphere of valve rod 8 heads and the concave spherical surface of guiding aligning axle 4 are contacted; Valve rod 8 is connected with disc coupling B12 with piston shaft 13 usefulness disc coupling A10, places cushion pad 12 in the middle of this two part.
Working principle of the present invention:
During valve closing; The thrust that pneumatic actuator 14 produces is passed to spool 2 through piston shaft 13, disc coupling B12, cushion pad 11, disc coupling A10, valve rod 8, guiding aligning axle 4, annular spring 3; The impulsive load of spool 2 and valve seat 1 has reduced the moment impact load on the parts such as acting on valve rod 8, spool 2 and valve seat 1 greatly through cushion pad 11 and annular spring 3 two-stage bumper and absorbing shocks.
Embodiment of the present invention only is the description that preferred implementation of the present invention is carried out; Be not that design of the present invention and scope are limited; Under the prerequisite that does not break away from design philosophy of the present invention, engineers and technicians make technological scheme of the present invention in related domain various modification and improvement all should fall into protection scope of the present invention; The technology contents that the present invention asks for protection all is documented in claims.
Claims (6)
1.
OnePlant multi-buffer high pressure angie type and open stop valve soon, comprise the valve rod (8) that is connected with pneumatic actuator (14) through piston shaft (13), be arranged on valve seat (1) and spool (2) in valve rod (8) the head valve body (9), it is characterized in that:
Spool (2) is a hollow-core construction; Guiding aligning axle (4) is set in the cavity; Guiding aligning axle (4) is provided with the annular spring (3) that reduces spool (2) and valve seat (1) impact; The aligning axle (4) that wherein leads is set to concave spherical surface with valve rod (8) head connecting end, and the corresponding assembling of protruding sphere of concave spherical surface with valve rod (8) head of the aligning axle (4) that leads;
The tail end of said valve rod (8) links into an integrated entity with piston shaft (13) through disc coupling A (10) and disc coupling B (12), and is provided with the cushion pad (11) that strengthens piston shaft (13) and valve rod (8) buffering and flexural stress between disc coupling A (10) and the disc coupling B (12).
2. multi-buffer high pressure angie type according to claim 1 is opened stop valve soon, it is characterized in that the described valve seat (1) and the surface of contact of spool (2) are designed to ball face sealing structure.
3. multi-buffer high pressure angie type according to claim 1 is opened stop valve soon; It is characterized in that having groove on the described guiding aligning axle (4), O shape rubber seal (5) is set in the groove forms in the sealing surface prevention impurity entering annular spring (3) with spool (2) inwall.
4. multi-buffer high pressure angie type according to claim 1 is opened stop valve soon; The head that it is characterized in that described valve rod (8) has annular groove; Be provided with half snap ring (6) in the annular groove; Half snap ring (6) compresses through the clamping sleeve (7) that is connected with spool (2) inner thread that is provided with, and controls the corresponding contact of concave spherical surface of protruding sphere with the guiding aligning axle (4) of valve rod (8) head.
5. open stop valve soon according to claim 1 and 4 described multi-buffer high pressure angie types; It is characterized in that described guiding aligning axle (4) contacts with valve rod (8) head sphere with clamping sleeve (7) through half snap ring (6), and drive valve rod (8) and spool (2) automatic capturing valve seat (1).
6. multi-buffer high pressure angie type according to claim 1 is opened stop valve soon, it is characterized in that described valve rod (8) is the ripple tubular axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102878100A CN102808956A (en) | 2012-08-14 | 2012-08-14 | Multistage high-pressure buffering angular quickly opened stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102878100A CN102808956A (en) | 2012-08-14 | 2012-08-14 | Multistage high-pressure buffering angular quickly opened stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102808956A true CN102808956A (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102878100A Pending CN102808956A (en) | 2012-08-14 | 2012-08-14 | Multistage high-pressure buffering angular quickly opened stop valve |
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| Country | Link |
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| CN (1) | CN102808956A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864104A (en) * | 2015-05-22 | 2015-08-26 | 宋春光 | Safe one-way stop valve |
| CN112780827A (en) * | 2021-01-20 | 2021-05-11 | 国家石油天然气管网集团有限公司华南分公司 | Centering elastic coupling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1521433A (en) * | 2003-02-11 | 2004-08-18 | 跃 张 | Magnet valve |
| CN2784681Y (en) * | 2004-12-23 | 2006-05-31 | 鞍山电磁阀有限责任公司 | High-temperature and high-pressure stop valve |
| CN201187586Y (en) * | 2008-04-25 | 2009-01-28 | 唐山钢铁股份有限公司 | Even discharge valve of blast furnace |
| CN202100726U (en) * | 2011-05-25 | 2012-01-04 | 沈阳盛世高中压阀门有限公司 | Seal sodium stop valve of nuclear grade corrugated pipe |
| CN202790559U (en) * | 2012-08-14 | 2013-03-13 | 岳阳东方自控工程设备有限公司 | Multilevel buffer high pressure angle type quick-opening stop valve |
-
2012
- 2012-08-14 CN CN2012102878100A patent/CN102808956A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1521433A (en) * | 2003-02-11 | 2004-08-18 | 跃 张 | Magnet valve |
| CN2784681Y (en) * | 2004-12-23 | 2006-05-31 | 鞍山电磁阀有限责任公司 | High-temperature and high-pressure stop valve |
| CN201187586Y (en) * | 2008-04-25 | 2009-01-28 | 唐山钢铁股份有限公司 | Even discharge valve of blast furnace |
| CN202100726U (en) * | 2011-05-25 | 2012-01-04 | 沈阳盛世高中压阀门有限公司 | Seal sodium stop valve of nuclear grade corrugated pipe |
| CN202790559U (en) * | 2012-08-14 | 2013-03-13 | 岳阳东方自控工程设备有限公司 | Multilevel buffer high pressure angle type quick-opening stop valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864104A (en) * | 2015-05-22 | 2015-08-26 | 宋春光 | Safe one-way stop valve |
| CN112780827A (en) * | 2021-01-20 | 2021-05-11 | 国家石油天然气管网集团有限公司华南分公司 | Centering elastic coupling |
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Application publication date: 20121205 |