CN203823116U - Ceramic ball valve with high corrosion resistance and erosive wear resistance - Google Patents
Ceramic ball valve with high corrosion resistance and erosive wear resistance Download PDFInfo
- Publication number
- CN203823116U CN203823116U CN201420227616.8U CN201420227616U CN203823116U CN 203823116 U CN203823116 U CN 203823116U CN 201420227616 U CN201420227616 U CN 201420227616U CN 203823116 U CN203823116 U CN 203823116U
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- Prior art keywords
- valve
- ball
- arcuate indentation
- rod
- valve rod
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- 239000000919 ceramic Substances 0.000 title claims abstract description 14
- 230000003628 erosive effect Effects 0.000 title claims abstract description 13
- 238000005260 corrosion Methods 0.000 title claims abstract description 9
- 230000007797 corrosion Effects 0.000 title claims abstract description 9
- 238000012856 packing Methods 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 9
- 239000010439 graphite Substances 0.000 claims abstract description 9
- 210000004907 gland Anatomy 0.000 claims abstract description 8
- 238000007373 indentation Methods 0.000 claims description 41
- 238000007789 sealing Methods 0.000 claims description 21
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model discloses a ceramic ball valve with high corrosion resistance and erosive wear resistance. According to the ceramic ball valve, two valve bodies are connected with a valve bonnet and sealed through O-type gaskets; the centers of the inner sides of the two valve bodies are respectively provided with a stepped valve seat, a ledge of each stepped valve seat is matched with and fixed to the inner side of the corresponding valve body through a spring-back washer, and the inner side of each valve seat and an arched notched valve ball form surface contact seal; graphite packing is embedded in the circumferential gap of connection between a valve rod and the valve bonnet and pressed and fixed through a packing gland and bolts; one end of the valve rod is inserted in the arched notched valve ball to be positioned, the other end of the valve rod is connected with an actuating mechanism, the actuating mechanism drives the arched notched valve ball to make rotational motion through the valve rod, and the arched notched valve ball is of an asymmetric structure. The ceramic ball valve can be applied to multiphase flow wear working conditions in the coal chemical industry, the petrochemical engineering and an electric power system and is high in high temperature resistance and wear resistance and long in service life. The ceramic ball valve has good comprehensive performance, can be used in a harsh multiphase flow erosive wear environment and is extensive in application prospect.
Description
Technical field
The utility model relates to ceramic ball valve, specifically relates to be applied to a kind of highly corrosion resistant of the Diversification Type industries such as Coal Chemical Industry, petrochemical industry, electric power station system and the ceramic ball valve of erosive wear.
Background technique
Multiphase flow is carried and is widely used in the Diversification Type industries such as oil, chemical industry, biology, pharmacy, metallurgy, and the development of national economy is played to very important effect.Ball valve is because its flow resistance is little, it is unrestricted to flow to, comparing other valves has comprehensive advantage rapidly in keying.
Recent years, in order to meet the needs of energy development, strengthen national energy strategic reserves, greatly develop Coal Chemical Industry related industry imperative.Certain cover megaton DCL/Direct coal liquefaction demonstration project is since coming into operation for the end of the year 2008, because flowing, the unplanned shutdown accident that causes of wearing and tearing is very common, the particularly valve of multiphase flow transporting system wearing and tearing, leakage, seriously restrict the long-term operation of whole demonstration project, production safety risk is high, and the intensive benefit of scale of Coal Chemical Industry is not remarkable.In Coal Chemical Industry core apparatus, select at present taking high-temperature high-pressure metal seal wear resistance ball valve structural type as many, but metal seal ball valve is often because high temperature multiphase flow washes away harsh operating mode, show valve seat and ball face sealing tight, have scratch, the feature such as sphere alloy part comes off, hardness is low.And ceramic ball valve has higher intensity and hardness because of valve seat and valve ball, wear resistance is good, has the features such as self lubricity, has well solved metal sealing wear resistance ball valve serious wear under the harsh operating mode of multiphase flow, the difficult problem such as poorly sealed.
Model utility content
The problem existing for the wear resistance ball valve under Coal Chemical Industry multiphase flow special operation condition, the purpose of this utility model is to provide the ceramic ball valve of a kind of highly corrosion resistant and erosive wear, it has very high crushing resistance, high temperature resistant, wear-resistant, corrosion-resistant, long service life, possess good combination property, can meet the use in the harsh erosive wear environment of multiphase flow.
In order to achieve the above object, the technological scheme that the utility model adopts is:
The utility model comprises two valve bodies, valve seat, resilience pad, valve gap, Gland, valve rod, actuator, graphite packing, O type packing ring and the valve ball that structure is identical; Two valve bodies and valve gap are connected and fixed, and by O type washer sealing; Inside two valve bodies, center is separately installed with stepped shaft valve seat, and stepped shaft valve seat shoulder and valve body inner side are fixed by resilience pad, and valve seat inner side contacts sealing with valve ball forming surface; The circumferential space that valve rod is connected with valve gap is embedded in graphite packing, and is fixed through bolt by Gland; Valve ball location is inserted in one end of valve rod, and the other end of valve rod is connected with actuator, and actuator drives valve ball to rotatablely move by valve rod; Described valve ball is the arcuate indentation valve ball that adopts non-symmetry structure, be an opening end of arcuate indentation valve ball axial section be above arcuate indentation, after an opening end, it is arc notch, another opening end of arcuate indentation valve ball axial section be above arc notch, be arcuate indentation after an opening end.
The positioning hole of described valve rod and arcuate indentation valve ball runs through upper half part of arcuate indentation valve ball.
Described valve body, valve gap and valve rod are metal alloy compositions; Valve seat and arcuate indentation valve ball are stupalith; Resilience pad and O type packing ring are PTFE.
The beneficial effect having of the present utility model is:
The stupalith valve ball the utility model proposes and valve seat are applicable to the high temperature wear operating mode of multiphase flow harshness, and the hard sealing between valve ball and valve seat reaches the sealing of VI level; Effectively reduce the erosive wear of medium to spheroid edge when the little aperture with the valve ball of arcuate indentation; The application of resilience pad can be the valve of working under high-temperature alternate operating mode effective resilience surplus is provided, and has ensured the sealing of valve seat and valve ball; When special valve rod design prevents valve working, valve rod skids off; Can be applicable to multiphase flow wear working condition in Coal Chemical Industry, petrochemical industry, electric power system, possess good heat-resisting quantity, wear resistance, long service life.Possess good combination property, can meet the use in the harsh erosive wear environment of multiphase flow, application prospect is extensive.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural drawing of arcuate indentation valve ball.
In figure: 1, valve body, 2, valve seat, 3, resilience pad, 4, valve gap, 5, Gland, 6, valve rod, 7, actuator, 8, graphite packing, 9, O type packing ring, 10, arcuate indentation valve ball.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1 and Figure 2, the utility model comprises two valve bodies 1, valve seat 2, resilience pad 3, valve gap 4, Gland 5, valve rod 6, actuator 7, graphite packing 8, O type packing ring 9 and the arcuate indentation valve ball 10 that structure is identical; Two valve bodies 1 are fixed by Bolt Connection with valve gap 4, and realize sealing by O type packing ring 9; Two valve body 1 centers, inner side are separately installed with dismountable stepped shaft valve seat 2, and stepped shaft valve seat 2 outside shoulders and valve body 1 inner side are fixed by resilience pad 3, and valve seat 2 inner sides contact sealing with arcuate indentation valve ball 10 forming surfaces; The circumferential space that valve rod 6 is connected with valve gap 4 is embedded in graphite packing 8, and is fixed through bolt by Gland 5; One end of valve rod 6 is inserted arcuate indentation valve ball 10 and is located, and the other end of valve rod 6 is connected with actuator 7, and actuator 7 drives arcuate indentation valve ball 10 to rotatablely move by valve rod 6; The arcuate indentation valve ball 10 that described arcuate indentation valve ball 10 is non-symmetry structure, be an opening end of arcuate indentation valve ball 10 axial sections be above arcuate indentation, after an opening end, it is arc notch, arcuate indentation valve ball 10 another opening ends of axial section be above arc notch, be arcuate indentation after an opening end.
The positioning hole of described valve rod 6 and arcuate indentation valve ball 10 runs through upper half part of arcuate indentation valve ball 10.
Described valve body 1, valve gap 4 and valve rod 6 are metal alloy compositions, possess higher intensity and hardness, and valve rod adopts special anti-skidding design; Graphite packing has heat-resisting quantity, lubricity, and thermal shock resistance, the good advantage such as sealing, reduces valve rod frictional force and moment of torsion in the course of the work, effectively extends the working life of filler.Valve seat 2 and arcuate indentation valve ball 10 are stupalith; Resilience pad 3 and O type packing ring 9 are PTFE, and tetrafluoro is high temperature resistant, and resilience pad and O type packing ring provide effective compensation, buffering and sealing in the time of valve working.
Between described arcuate indentation valve ball 10 and valve seat 2, adopt non-traditional machining grinding technique to realize bidirectional cambered surface sealing, ensure the sealing of valve in the time of work; The stupalith hardness adopting is greater than 88HRC.
As shown in Figure 2; pottery arcuate indentation valve ball 10 adopts the arcuate indentation structure of unsymmetric form; change and adjusted fluid in switching process the flow morphology during by runner mouth; by diffusion fluid; flow velocity reduces; thereby obviously reduce the erosive wear to arcuate indentation valve ball 10 and valve seat 2, greatly protected wear resistance ball valve internals.Be particularly suitable for the harsh operating modes such as Dual-Phrase Distribution of Gas olid (as catalyzer), multiphase flow with the valve ball 10 of arcuate indentation.Arcuate indentation valve ball 10 and valve seat 2 matchs grinding technique by precision and realize cambered surface sealing, and valve seat 2 designs roomy sealing surface and can avoid because of little scraping, causes sealing surface to lose efficacy and produces leakage.
Resilience pad 3 is arranged on the cylindrical of valve seat 2 (stepped shaft shoulder), rely on the bolt pretightening of valve body 1, realize the sealing of valve body 1 and valve seat 2, avoid because adopting dish spring and gasket construction that small solid particle is entered in the cavity of valve seat and valve body, and cause component failure; Under high-temperature alternate operating mode, the resilience pad 3 of PTFE can effectively provide resilience surplus, has ensured the close contact of valve seat 2 with arcuate indentation valve ball 10, and enough seal pressures are provided, and has ensured sealing.
The design of unsteady arcuate indentation valve ball 10 easily produces skew and impact sealing under pressure medium effect, valve rod 6 adopts plug-in type Position Design, ensure that valve ball is not offset, the positioning hole wherein running through has effectively prevented that valve rod 6 from causing brittle fracture in rotary course because ceramic arcuate indentation valve ball 10 stress are concentrated.
Above-mentioned embodiment is used for the utility model of explaining; instead of the utility model is limited; in the protection domain of spirit of the present utility model and claim, to any amendment of the present utility model and change, all fall into protection domain of the present utility model.
Claims (3)
1. a ceramic ball valve for highly corrosion resistant and erosive wear, comprises two valve bodies (1), valve seat (2), resilience pad (3), valve gap (4), Gland (5), valve rod (6), actuator (7), graphite packing (8), O type packing ring (9) and valve ball that structure is identical; Two valve bodies (1) are connected and fixed with valve gap (4), and by O type packing ring (9) sealing; Center, two valve bodies (1) inner side is separately installed with stepped shaft valve seat (2), and stepped shaft valve seat (2) shoulder and valve body (1) inner side are fixed by resilience pad (3), and valve seat (2) inner side contacts sealing with valve ball forming surface; The circumferential space that valve rod (6) is connected with valve gap (4) is embedded in graphite packing (8), and is fixed through bolt by Gland (5); Valve ball location is inserted in one end of valve rod (6), and the other end of valve rod (6) is connected with actuator (7), and actuator (7) drives valve ball to rotatablely move by valve rod (6); It is characterized in that: described valve ball is the arcuate indentation valve ball (10) that adopts non-symmetry structure, be an opening end of arcuate indentation valve ball (10) axial section be above arcuate indentation, after an opening end, it is arc notch, arcuate indentation valve ball (10) another opening end of axial section be above arc notch, be arcuate indentation after an opening end.
2. the ceramic ball valve of a kind of highly corrosion resistant according to claim 1 and erosive wear, is characterized in that: the positioning hole of described valve rod (6) and arcuate indentation valve ball (10) runs through upper half part of arcuate indentation valve ball (10).
3. the ceramic ball valve of a kind of highly corrosion resistant according to claim 1 and erosive wear, is characterized in that: described valve body (1), valve gap (4) and valve rod (6) are metal alloy compositions; Valve seat (2) and arcuate indentation valve ball (10) are stupalith; Resilience pad (3) and O type packing ring (9) are PTFE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420227616.8U CN203823116U (en) | 2014-05-06 | 2014-05-06 | Ceramic ball valve with high corrosion resistance and erosive wear resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420227616.8U CN203823116U (en) | 2014-05-06 | 2014-05-06 | Ceramic ball valve with high corrosion resistance and erosive wear resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203823116U true CN203823116U (en) | 2014-09-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420227616.8U Expired - Fee Related CN203823116U (en) | 2014-05-06 | 2014-05-06 | Ceramic ball valve with high corrosion resistance and erosive wear resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203823116U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968101A (en) * | 2014-05-06 | 2014-08-06 | 浙江理工大学 | Ceramic ball valve high in corrosion resistance and erosive abrasion resistance |
| CN105822784A (en) * | 2016-04-15 | 2016-08-03 | 蚌埠南自仪表有限公司 | Rigid seal ball valve |
-
2014
- 2014-05-06 CN CN201420227616.8U patent/CN203823116U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968101A (en) * | 2014-05-06 | 2014-08-06 | 浙江理工大学 | Ceramic ball valve high in corrosion resistance and erosive abrasion resistance |
| CN105822784A (en) * | 2016-04-15 | 2016-08-03 | 蚌埠南自仪表有限公司 | Rigid seal ball valve |
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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 |
Granted publication date: 20140910 Termination date: 20200506 |
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| CF01 | Termination of patent right due to non-payment of annual fee |