CN201916509U - Regulating valve with high-differential pressure low-leakage valve core - Google Patents
Regulating valve with high-differential pressure low-leakage valve core Download PDFInfo
- Publication number
- CN201916509U CN201916509U CN201020666849XU CN201020666849U CN201916509U CN 201916509 U CN201916509 U CN 201916509U CN 201020666849X U CN201020666849X U CN 201020666849XU CN 201020666849 U CN201020666849 U CN 201020666849U CN 201916509 U CN201916509 U CN 201916509U
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- China
- Prior art keywords
- valve
- spool
- high pressure
- pressure difference
- seal ring
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Abstract
The utility model provides a regulating valve with a high-differential pressure low-leakage valve core, which comprises a valve body, a valve cover, a support, an actuator, a valve rod and a valve core, wherein a valve seat is arranged in the valve body; the valve cover is fixed at the top end of the valve body; the support is fixedly arranged on the valve cover; the actuator is fixedly arranged at the top end of the support; the valve rod extends from the actuator and passes through the support, the valve cover and the valve body in sequence; the valve core is fixed at the bottom end of the valve rod and is used for plugging inside the valve seat; the longitudinal cross section of the valve core is in a paraboloid shape; a faying surface which is fit with the appearance of the valve core is arranged in the valve seat; the faying surface is provided with a circle of seal groove; and a seal ring is filled in the seal groove, accordingly, the problem that how to ensure the zero leakage of the valve when the regulating precision and the allowable differential pressure are improved in the prior art is solved.
Description
Technical field
The utility model relates to a kind of valve, particularly relates to a kind of modulating valve with the low leakage of High Pressure Difference spool of good seal performance.
Background technique
Modulating valve (control valve) in industrial automation process control field, use very extensively, modulating valve is made of jointly electric actuator or pneumatic actuator and valve body (being valve) two-part usually.In the system of many automation control area, operating conditions that modulating valve stands such as temperature, pressure, corrosion and pollution are all even more serious than other parts, so the whether good of its sealability is the key factor that concerns industry safety.
Problem of modulating valve ubiquity commonly used at present, if be exactly to improve degree of regulation and allow pressure reduction, valve leak will correspondingly increase, and can't accomplish harmony all the time.Because the spool of modulating valve is a catenary motion up and down, if make single sealing, its valve is exactly the structure of uneven formula, just easily spool is backed down when pressure reduction is big, if good airproof performance, the pressure reduction of its permission is just little.So, must make the double-sealing form if increase pressure reduction, valve is made the structure of balanced type, permission pressure reduction is big, in the prior art, double-sealing strengthens sealing difficulty, still can not solve the big problem of leaking, so, can't solve all the time when improving degree of regulation and permission pressure reduction and can also guarantee that its valve does not leak this difficult problem.
Summary of the invention
The shortcoming of prior art in view of the above, the purpose of this utility model are to provide a kind of low modulating valve that leaks spool of High Pressure Difference that has, to solve problem how to guarantee the valve zero leakage in the prior art when improving degree of regulation and allowing pressure reduction.
Reach other relevant purposes for achieving the above object, the utility model provides a kind of low modulating valve that leaks spool of High Pressure Difference that has, comprise that inside has the valve body of a valve seat, be fixed on the valve gap on described valve body top, be fixedly mounted on the support on the described valve gap, be fixedly mounted on the final controlling element of described cantilever tip, be arranged in described support successively from described final controlling element extension, valve rod in valve gap and the valve body, be fixed in the spool that described valve rod bottom is used for the described valve seat of shutoff, it is characterized in that: the longitudinal cross-section of described spool is the paraboloid shape, has the faying surface that the profile with this spool matches in the described valve seat, and offer on the described faying surface by a circle seal groove, be filled with seal ring in the described seal groove.
Have in the low modulating valve that leaks spool of High Pressure Difference of the present utility model, described seal ring can be the teflon material, also the material that can be formed by stacking for graphite and stainless steel thin slice.Described seal ring is the O RunddichtringO.
Have in the low modulating valve that leaks spool of High Pressure Difference of the present utility model, described valve inner has the cavity that is communicated with described valve seat, and described cavity is S-type.
As mentioned above, of the present utility model have the low modulating valve that leaks spool of High Pressure Difference compared with prior art, adopting the longitudinal cross-section is the spool of paraboloid shape, and on the faying surface that the profile of described valve seat and spool matches, offer by a circle seal groove, in seal groove, be filled with seal ring, reach good sealing effect, and solved a difficult problem when improving degree of regulation and allowing pressure reduction, how to guarantee the valve zero leakage in the prior art.
Description of drawings
The master that Fig. 1 is shown as the modulating valve that the utlity model has the low leakage of High Pressure Difference spool looks sectional view.
Fig. 2 is shown as the A place enlarged diagram among Fig. 1.
Embodiment
Below by specific instantiation mode of execution of the present utility model is described, those skilled in the art can understand other advantages of the present utility model and effect easily by the content that this specification disclosed.
See also Fig. 1 and Fig. 2, the master that Fig. 1 is shown as the modulating valve that the utlity model has the low leakage of High Pressure Difference spool looks sectional view; Fig. 2 is shown as the A place enlarged diagram among Fig. 1.Need to prove, the diagram that is provided in the present embodiment only illustrates basic conception of the present invention in a schematic way, satisfy only show in graphic with the utility model in relevant assembly but not component count, shape and size drafting when implementing according to reality, kenel, quantity and the ratio of each assembly can be a kind of random change during its actual enforcement, and its assembly layout kenel also may be more complicated.
As shown in the figure, the utility model provides a kind of low modulating valve 1 that leaks spool of High Pressure Difference that has, comprise inside have the valve body 11 of a valve seat 10, be fixed on described valve body 11 tops valve gap 12, be fixedly mounted on the support 13 on the described valve gap 12, be fixedly mounted on described support 13 tops final controlling element 14, the valve rod 15 in described final controlling element 14 is arranged in described support 13, valve gap 12 and valve body 11 successively, be fixed in the spool 16 that described valve rod 15 bottoms are used for the described valve seat 10 of shutoff.Wherein, described final controlling element 14 drives described valve rod 15 and moves up and down when work, leave or shutoff valve seat 10 to drive described spool 16, and then reach the regulating action of modulating valve 1.
In the present embodiment, described valve body 11 inside have S-type cavity 110, so that the described cavity 110 of fluids passes through, described valve seat 10 is communicated with cavity, is used to cooperate spool 16 with the fluid flow of control flows through this cavity 110.Particularly, the longitudinal cross-section of described spool 16 is the paraboloid shape, has the faying surface 100 that the profile with this spool 16 matches in the described valve seat 10, so so that faying surface 100 closer combinations of described spool 16 and described valve seat 10, to reach better sealing effect.
The more important thing is, offer on the faying surface 100 of described valve seat 10 that be filled with seal ring 102 in the described seal groove 101, described seal ring 102 is the O RunddichtringO by a circle seal groove 101.In being applied to the mode of execution of normal temperature environment, described seal ring 102 is the teflon material.
In being applied to the mode of execution of hot environment, described seal ring 102 is the material that graphite and stainless steel thin slice are formed by stacking, so wear-resisting to guarantee described seal ring 102 existing hardness, stretchability is arranged again, simultaneously high temperature resistant, make described modulating valve 1 when closing fully, can reach zero leakage, and do not influence degree of regulation and allow pressure reduction.
In sum, the utility model mainly is that the employing longitudinal cross-section is the spool of paraboloid shape, and on the faying surface that the profile of described valve seat and spool matches, offer by a circle seal groove, in seal groove, be filled with seal ring, reach good sealing effect, and solved a difficult problem when improving degree of regulation and allowing pressure reduction, how to guarantee the valve zero leakage in the prior art.So compared with prior art, the utility model has effectively overcome various shortcoming of the prior art and the tool high industrial utilization.
The foregoing description is illustrative principle of the present utility model and effect thereof only, but not is used to limit the utility model.Any personage who has the knack of this technology all can be under spirit of the present utility model and category, and the foregoing description is modified or changed.
Claims (6)
1. one kind has the low modulating valve that leaks spool of High Pressure Difference, comprise that inside has the valve body of a valve seat, be fixed on the valve gap on described valve body top, be fixedly mounted on the support on the described valve gap, be fixedly mounted on the final controlling element of described cantilever tip, be arranged in described support successively from described final controlling element extension, the valve rod of valve gap and valve body, be fixed in described valve rod bottom and be used for the interior spool of the described valve seat of shutoff, it is characterized in that: the longitudinal cross-section of described spool is the paraboloid shape, has the faying surface that the profile with this spool matches in the described valve seat, and offer on the described faying surface by a circle seal groove, be filled with seal ring in the described seal groove.
2. the modulating valve with the low leakage of High Pressure Difference spool according to claim 1, it is characterized in that: described seal ring is the teflon material.
3. the modulating valve with the low leakage of High Pressure Difference spool according to claim 1, it is characterized in that: described seal ring is the material that graphite and stainless steel thin slice are formed by stacking.
4. according to claim 2 or 3 described modulating valve with the low leakage of High Pressure Difference spool, it is characterized in that: described seal ring is the O RunddichtringO.
5. the modulating valve with the low leakage of High Pressure Difference spool according to claim 1, it is characterized in that: described valve inner has the cavity that is communicated with described valve seat.
6. the modulating valve with the low leakage of High Pressure Difference spool according to claim 5, it is characterized in that: described cavity is S-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020666849XU CN201916509U (en) | 2010-12-15 | 2010-12-15 | Regulating valve with high-differential pressure low-leakage valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020666849XU CN201916509U (en) | 2010-12-15 | 2010-12-15 | Regulating valve with high-differential pressure low-leakage valve core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201916509U true CN201916509U (en) | 2011-08-03 |
Family
ID=44416306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020666849XU Expired - Fee Related CN201916509U (en) | 2010-12-15 | 2010-12-15 | Regulating valve with high-differential pressure low-leakage valve core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201916509U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615549A (en) * | 2013-12-17 | 2014-03-05 | 北京航天益森风洞工程技术有限公司 | Large-caliber high-pressure pressure regulating valve for pneumatic test device |
| CN106224628A (en) * | 2016-08-26 | 2016-12-14 | 杭州远控自动化技术有限公司 | A kind of regulation valve and accuracy control method thereof |
-
2010
- 2010-12-15 CN CN201020666849XU patent/CN201916509U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615549A (en) * | 2013-12-17 | 2014-03-05 | 北京航天益森风洞工程技术有限公司 | Large-caliber high-pressure pressure regulating valve for pneumatic test device |
| CN103615549B (en) * | 2013-12-17 | 2015-12-09 | 北京航天益森风洞工程技术有限公司 | A kind of aerodynamic testing equipment heavy caliber high pressure pressure regulator valve |
| CN106224628A (en) * | 2016-08-26 | 2016-12-14 | 杭州远控自动化技术有限公司 | A kind of regulation valve and accuracy control method thereof |
| CN106224628B (en) * | 2016-08-26 | 2018-09-11 | 杭州远控自动化技术有限公司 | A kind of regulating valve and its accuracy control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20161215 |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Shanghai Juliang Solenoid Valve Manufacturing Co., Ltd. Document name: Notification of Termination of Patent Right |