CN204164416U - A kind of LNG ball body of valve - Google Patents
A kind of LNG ball body of valve Download PDFInfo
- Publication number
- CN204164416U CN204164416U CN201420461514.2U CN201420461514U CN204164416U CN 204164416 U CN204164416 U CN 204164416U CN 201420461514 U CN201420461514 U CN 201420461514U CN 204164416 U CN204164416 U CN 204164416U
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- CN
- China
- Prior art keywords
- positioning shaft
- valve
- spheroid
- upper positioning
- lng
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Abstract
The utility model discloses a kind of LNG ball body of valve, comprise ball main body (1), upper positioning shaft (2), lower positioning shaft (3), spheroid through hole (4) and two cylinders (5) being positioned at ball main body both sides, being made up of spherical crown (6) and cylinder (7), upper positioning shaft (2) top is provided with the groove (8) be connected with valve rod, upper positioning shaft (2), lower positioning shaft (3) and two cylinders (5) are respectively perpendicular to spheroid through hole (4), and upper positioning shaft (2), lower positioning shaft (3) and two cylinders (5) have the identical amount of expanding with heat and contract with cold.The utility model is when temperature variation, the amount that spheroid surrounding is expanded with heat and contract with cold is consistent, spherome surface physical dimension is not caused and loses circle, ensure that valve in use stability and reliability, eliminate the unnecessary surface of spheroid simultaneously, reduce the weight of spheroid self, reduce the friction torque of valve seat and sphere, thus decrease the switch moment of valve.
Description
Technical field
The utility model relates to the casting of LNG cryogenic high pressure ball valve, particularly a kind of LNG ball body of valve.
Background technique
LNG ball body of valve is the vitals manufacturing LNG valve, and it coordinates with valve seat, can play the effect of switching medium.Spheroid valve is the one of valve, and ball valve is widely used in all departments such as oil, chemical industry, generating, papermaking, atomic power, aviation, rocket, and people's daily life.At present, domestic LNG casts ball valve major part with cryogenic high pressure and goes back dependence on import (particularly heavy caliber cryogenic high pressure casting ball valve), and one of its major reason that cannot domesticize is exactly the change that also cannot solve the geometric accuracy of spheroid under ultra-low temperature surroundings in valve.The operating temperature of LNG natural gas line medium reaches the ultra low temperature of-165 DEG C, and metallic material will shrink phenomenon under ultra-low temperature surroundings.Due to the nonunf ormity of part geometry size and quality, that causes part to shrink is uneven, thus affects the geometric accuracy of part, and destroys the precision when normal temperature.As spheroid, after its geometric accuracy is destroyed, spherome surface loses circle, sealing surface of seat and spherome surface is caused 100% not coincide, there is gap in sealing surface of seat and spherome surface, thus make valve can not reach its sealability requirement, cause valves leakage phenomenon, with safety, threat is produced to the performance of valve.
Model utility content
For the defect of prior art, the utility model provides a kind of LNG ball body of valve.
A kind of LNG ball body of valve, comprise ball main body 1, upper positioning shaft 2, lower positioning shaft 3, spheroid through hole 4 and two cylinders 5 being positioned at ball main body 1 both sides, being made up of spherical crown 6 and cylinder 7, upper positioning shaft 2 top is provided with the groove 8 be connected with valve rod, upper positioning shaft 2, lower positioning shaft 3 and two cylinders 5 are respectively perpendicular to spheroid through hole 4, and upper positioning shaft 2, lower positioning shaft 3 and two cylinders 5 have the identical amount of expanding with heat and contract with cold.The beneficial effect of this technological scheme is by arranging cylinder 5, ensure the uniform quality distribution of spheroid surrounding, when temperature variation, the amount that spheroid surrounding is expanded with heat and contract with cold is consistent, and spherome surface physical dimension is not caused and loses circle, ensure that valve in use stability and reliability, eliminate the unnecessary surface of spheroid simultaneously, reduce the weight of spheroid self, reduce the friction torque of valve seat and sphere, thus decrease the switch moment of valve.
As further improvement of the utility model, there is cemented carbide bisque on described LNG ball body of valve surface.The wear resistance of spherome surface can be improved like this.
As further improvement of the utility model, the thickness of described LNG ball body of valve surface hard alloy powder layer is 1-1.2mm, and its surface hardness is HRC63-65.The wear resistance of spherome surface can be improved further.
As further improvement of the utility model, described groove 8 is homogeneous structure design in many ways.Improve valve rod and in switching process, make the moment of torsion surrounding uniform force of valve rod with coordinate progress and the valve of spheroid, ensure the usability of valve rod.
As further improvement of the utility model, all there is cemented carbide bisque on described upper positioning shaft 2 and lower positioning shaft 3 surface.The load of spheroid in rotation process and wear resistance can be improved like this.
As further improvement of the utility model, the cemented carbide powder layer thickness on described upper positioning shaft 2 and lower positioning shaft 3 surface is 1mm, and its surface hardness is HRC58-62.The load of spheroid in rotation process and wear resistance can be improved further.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the utility model LNG ball body of valve;
Fig. 2 is the A-A generalized section in the utility model Fig. 1;
Fig. 3 is the plan structure schematic diagram of the utility model LNG ball body of valve.
Embodiment
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in detail embodiment of the present utility model below in conjunction with accompanying drawing, make above-mentioned and other object of the present utility model, Characteristics and advantages will be more clear.Reference character identical in whole accompanying drawing indicates identical part.Deliberately do not draw accompanying drawing in proportion, focus on purport of the present utility model is shown.
As shown in Figure 1, 2, 3, LNG ball body of valve of the present utility model comprises ball main body 1, upper positioning shaft 2, lower positioning shaft 3, spheroid through hole 4 and two cylinders 5 being positioned at ball main body 1 both sides, being made up of spherical crown 6 and cylinder 7, upper positioning shaft top is provided with the groove 8 be connected with valve rod, upper positioning shaft 2, lower positioning shaft 3 and two cylinders 5 are respectively perpendicular to spheroid through hole 4, and upper positioning shaft 2, lower positioning shaft 3 and two cylinders 5 have the identical amount of expanding with heat and contract with cold.
Known according to Fig. 1 to 3, Fig. 1 represents that ball valve is in closed condition, and now through hole and LNG natural gas flow in pipeline are to vertical.When needs throttle down, apply by valve rod the power reversing spheroid, the power of rotating sphere is passed to groove 8 by valve rod.9,10, the 11 cemented carbide bisques representing ball main body 1 surface, upper positioning shaft 2 surface and lower positioning shaft 3 surface respectively in Fig. 2.Because spheroid forms cylinder 5 through cutting, eliminate the surface that spheroid is unnecessary, reduce the weight of spheroid self, reduce the friction torque of valve seat and sphere, thus decrease the switch moment of valve, simultaneously owing to ensureing the uniform quality distribution of spheroid surrounding, when temperature variation, the amount that spheroid surrounding is expanded with heat and contract with cold is consistent, and spherome surface physical dimension is not caused and loses circle, ensure that valve in use stability and reliability.In order to improve the wear resistance of spherome surface, have cemented carbide bisque at spherome surface, cemented carbide powder layer thickness is preferably 1-1.2mm, and its surface hardness is HRC63-65.Meanwhile, in order to more laborsaving when switch valve, groove 8 is homogeneous structure design in many ways.All there is cemented carbide bisque on upper positioning shaft 2 and lower positioning shaft 3 surface, and can improve the load of spheroid in rotation process and wear resistance, described cemented carbide powder layer thickness is preferably 1mm, and its surface hardness is HRC58-62.
Set forth a lot of detail in the above description so that fully understand the utility model.But above description is only preferred embodiment of the present utility model, the utility model can be much different from alternate manner described here to implement, and therefore the utility model is not by the disclosed concrete restriction implemented above.Any those skilled in the art are not departing under technical solutions of the utility model ambit simultaneously, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solutions of the utility model, or be revised as the Equivalent embodiments of equivalent variations.Every content not departing from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solutions of the utility model protection.
Claims (6)
1. a LNG ball body of valve, it is characterized in that, comprise ball main body (1), upper positioning shaft (2), lower positioning shaft (3), spheroid through hole (4) and two cylinders (5) being positioned at ball main body (1) both sides, being made up of spherical crown (6) and cylinder (7), upper positioning shaft (2) top is provided with the groove (8) be connected with valve rod, upper positioning shaft (2), lower positioning shaft (3) and two cylinders (5) are respectively perpendicular to spheroid through hole (4), and upper positioning shaft (2), lower positioning shaft (3) and two cylinders (5) have the identical amount of expanding with heat and contract with cold.
2. LNG ball body of valve according to claim 1, is characterized in that, there is cemented carbide bisque on described ball main body (1) surface.
3. LNG ball body of valve according to claim 2, is characterized in that, described cemented carbide powder layer thickness 1mm-1.2mm, its surface hardness is HRC63-65.
4. LNG ball body of valve according to claim 1, is characterized in that, described groove (8) is homogeneous structure design in many ways.
5. LNG ball body of valve according to claim 1, is characterized in that, all there is cemented carbide bisque on described upper positioning shaft (2) and lower positioning shaft (3) surface.
6. LNG ball body of valve according to claim 5, is characterized in that, described cemented carbide powder layer thickness is 1mm, and its surface hardness is HRC58-62.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420461514.2U CN204164416U (en) | 2014-08-15 | 2014-08-15 | A kind of LNG ball body of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420461514.2U CN204164416U (en) | 2014-08-15 | 2014-08-15 | A kind of LNG ball body of valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204164416U true CN204164416U (en) | 2015-02-18 |
Family
ID=52538104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420461514.2U Expired - Fee Related CN204164416U (en) | 2014-08-15 | 2014-08-15 | A kind of LNG ball body of valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204164416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972241A (en) * | 2016-07-14 | 2016-09-28 | 昆山维萨阀门有限公司 | Semi-contact type sealing ball valve |
-
2014
- 2014-08-15 CN CN201420461514.2U patent/CN204164416U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972241A (en) * | 2016-07-14 | 2016-09-28 | 昆山维萨阀门有限公司 | Semi-contact type sealing ball valve |
| CN105972241B (en) * | 2016-07-14 | 2018-05-11 | 昆山维萨阀门有限公司 | A kind of semi-contact seal ball-valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jia Qiyue Inventor after: Wang Li Inventor after: Di Qiteng Inventor after: Ai Shaoping Inventor after: Huang Xingfu Inventor after: Mao Zhufeng Inventor after: Li Songling Inventor after: Zhu Jun Inventor before: Jia Qiyue Inventor before: Wang Li Inventor before: Di Qiteng Inventor before: Ai Shaoping Inventor before: Huang Xingfu Inventor before: Mao Zhufeng Inventor before: Li Songling Inventor before: Zhu Jun |
|
| 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: 20150218 Termination date: 20170815 |