CN103775671A - Corrugated pipe structure based self-compensating electric ball valve - Google Patents
Corrugated pipe structure based self-compensating electric ball valve Download PDFInfo
- Publication number
- CN103775671A CN103775671A CN201210405284.3A CN201210405284A CN103775671A CN 103775671 A CN103775671 A CN 103775671A CN 201210405284 A CN201210405284 A CN 201210405284A CN 103775671 A CN103775671 A CN 103775671A
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- China
- Prior art keywords
- valve
- valve seat
- cam
- spheroid
- electric ball
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Classifications
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- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
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- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention relates to a technology of valves in fluid pipes and particularly discloses a corrugated pipe structure based self-compensating electric ball valve. The electric ball valve comprises a valve body, a valve seat fixed in the valve body, a ball arranged in the valve seat, a motor connected with the upper end of the ball and a corrugated pipe arranged on the outside of the valve seat. A locator is arranged on the outside of the corrugated pipe and fixedly connected with the valve seat. A cam is fixed on the ball, and a rolling element is arranged on the outside of the cam and arranged between the cam and the valve seat. By means of the corrugated pipe structure, dynamic seal is performed, and the seal performance is good; meanwhile, abrasions to a graphite seal ring are prevented, and the service life of the graphite seal ring is increased; the corrugated pipe is located through the locator, so that the compensation performance is improved; by the aid of the cam and rolling element structure, mechanical abrasions to the cam are minimized, friction-free moving of the valve seat and the valve body during ball valve opening and closing is guaranteed, and the service life is increased.
Description
Technical field
The invention belongs to the valve technology in fluid circuit, be specifically related to a kind of electric ball valve.
Background technique
Under the normal running environment condition of the common pipe-line system of electric ball valve having at present, can meet functional requirement, but when valve arrangement is under hot environment, because complete machine structure is flooded by high temperature media, propose higher requirement to the sealability of electric ball valve, on the other hand, shielding electric ball valve in the time that system is normally moved in closed condition, at high temperature, flood under environment and must guarantee action message, for medium provides flow channels, to realize system expectation function, therefore, the Reliability of Microprocessor of this valve is had relatively high expectations.And at present for the non-refractory of existing electric ball valve, flood the problems such as environment, conventionally can only adopt the measure such as processing technology that improves sealing material or structural type, adjustment sealed member material to solve sealing and the lower problem of Reliability of Microprocessor of ball valve, but owing to being subject to the effects limit such as material property and process means, adopt these class methods to improving high temperature, to flood under environmental conditions the sealability of electric ball valve and the improvement effect of Reliability of Microprocessor very limited.
The electric ball valve using in pipe-line system at present can not meet high temperature, flood and reliable in action requirement.Ordinary ball valve is in opening-closing process, pretightening force acts on the surface of sealing pair all the time, causes the keying moment of valve larger, the wearing and tearing that the effect of pretightening force also increases Sealing simultaneously, cause the sealability between valve seat and spheroid to decline, in addition,, when ordinary ball valve opens and closes, valve seat and valve seal rely on carbon seal ring, using after certain number of times, due to the relative movement between valve seat and valve body, cause carbon seal ring wearing and tearing, working life is shorter.
Summary of the invention
The object of the present invention is to provide the shielding electric ball valve that a kind of sealability is better, reliability is higher, it can solve high temperature in pipe-line system, flood the problem that under environmental conditions, electric ball valve sealability is poor and performance reliability is lower.
Realize technological scheme of the present invention as follows:
A kind of self-compensation type electric ball valve based on bellows structure, it comprises valve body, be fixed on valve seat in valve body, be arranged on spheroid and the motor being connected with spheroid upper end in valve seat, also comprise the bellows that is arranged on described valve seat outside, the outside of bellows is provided with locating piece, and described locating piece is fixedly connected with valve seat; On described spheroid, be fixed with cam, cam is provided with rolling element outward, and described rolling element is between cam and valve seat.
In above-mentioned a kind of self-compensation type electric ball valve based on bellows structure: described rolling element top is provided with pressing plate, and this pressing plate and valve seat are fixed.
In above-mentioned a kind of self-compensation type electric ball valve based on bellows structure: described is provided with seal ring between valve body and locating piece.
In above-mentioned a kind of self-compensation type electric ball valve based on bellows structure: described spheroid upper end is processed with square opening, and valve rod lower end is processed as square column, and square column is positioned at the square opening of spheroid, make valve rod rotate the rear spheroid that drives and rotate.
The obtained beneficial effect of the present invention is as follows:
The bellows structure designing between valve body and valve seat, realizes dynamic seal (packing), and good seal performance meanwhile, has been avoided the wearing and tearing of carbon seal ring, improves its working life.
Locating piece is installed in valve body, above-mentioned bellows is positioned, while being the relative movement of itself and valve body, compensation performance is improved;
Design cam structure, and configured the rolling element that can relatively move in its outside, such structural design makes the mechanical wear of cam drop to minimum, has guaranteed again the frictionless motion of the central valve seat of ball valve opening-closing process and valve body simultaneously.Such forms of motion, has at utmost reduced the mechanical wear between valve seat and spheroid, improves the working life of whole device.
Further, above rolling element, design pressure plate structure, rolling element moving direction in mobile process is limited.
Make this ball valve can adapt to high temperature, the service condition under operating mode such as flood by said structure, and in valve event process, possess higher reliability and working life, possess advantage easy to maintenance simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the self-compensation type electric ball valve based on bellows structure;
In figure: 1. valve body; 2. valve seat; 3. spheroid; 4. cam; 5. rolling element; 6. bellows; 7. motor; 8. valve rod; 9. locating piece; 10. pressing plate; 11. carbon seal rings.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, motor 7 lower ends are processed with flange, by bolt, the flange of motor 7 lower ends is connected with valve body 1, thus fixed electrical machinery 7 and valve body 1.Motor 7 is switched on, and drives the valve rod 8 of its below to rotate, and the structure of square column is processed in the lower end of this valve rod 8.
On spheroid 3, fixedly mount cam 4 by screw, the outer rolling element 5 that is provided with of cam 4, it outside spheroid 3, is the valve seat 2 being fixedly mounted in valve body 1, rolling element 5 is between cam 4 and valve seat 2, rolling element 5 is located by side's disposed thereon pressing plate 10, and this pressing plate 10 is fixedly mounted on valve seat 2 by screw.
In order to improve sealability, one end welding of the outside of valve seat 2 and bellows 6, the other end of this bellows 6 welds with the locating piece 9 being fixedly mounted in valve body 1, due to the bit shift compensation performance of bellows 6 self, can make up the Displacement error that the mechanical wear that causes due to valve seat 2 and valve body 1 relative movement is brought, therefore can realize the zero leakage between valve seat 2 and valve body 1.For further sealing, between valve body 1 and locating piece 9, carbon seal ring 11 is installed.
When after motor 7 energisings, band ovable valve stem 8 rotates, and the square column of valve rod 8 terminations drives spheroid 3 to rotate, cam 4 rotates with spheroid 3, shielding electric ball valve is opened moment, and cam 4 promotes rolling element 5 and rotates, and cam promotes rolling element to the direction relative movement away from spheroid, make valve seat also towards the direction motion away from spheroid, thereby compress bellows, after this, between valve seat and spheroid all the time in disengaged condition; In shielding electric ball valve closing process, along with the relative movement between cam and rolling element, valve seat is under the effect of the opposite force of bellows, move towards spheroid direction, be adjacent to spheroid in spheroid complete shut-down moment, thereby realize shielding electric ball valve in opening-closing process, the frictionless motion between spheroid and valve seat, the working life of improving shielding electric ball valve.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.If these are revised and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (4)
1. the self-compensation type electric ball valve based on bellows structure, it comprises valve body (1), is fixed on the interior valve seat (2) of valve body (1), is arranged on spheroid (3) and the motor (7) being connected with spheroid (3) upper end in valve seat (2), it is characterized in that: also comprise the bellows (6) that is arranged on described valve seat (2) outside, the outside of bellows (6) is provided with locating piece (9), and described locating piece (9) is fixedly connected with valve seat (1); On described spheroid (3), be fixed with cam (4), cam (4) is outer is provided with rolling element (5), and described rolling element (5) is positioned between cam (4) and valve seat (2).
2. the self-compensation type electric ball valve based on bellows structure as claimed in claim 1, is characterized in that: described rolling element (5) top is provided with pressing plate (10), and this pressing plate (10) is fixing with valve seat (2).
3. the self-compensation type electric ball valve based on bellows structure as claimed in claim 1 or 2, is characterized in that: described is provided with seal ring between valve body (1) and locating piece (9).
4. the self-compensation type electric ball valve based on bellows structure as claimed in claim 1 or 2, it is characterized in that: described spheroid (3) upper end is processed with square opening, valve rod (8) lower end is processed as square column, square column is positioned at the square opening of spheroid (3), makes valve rod (8) rotate the rear spheroid (3) that drives and rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210405284.3A CN103775671A (en) | 2012-10-22 | 2012-10-22 | Corrugated pipe structure based self-compensating electric ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210405284.3A CN103775671A (en) | 2012-10-22 | 2012-10-22 | Corrugated pipe structure based self-compensating electric ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103775671A true CN103775671A (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210405284.3A Pending CN103775671A (en) | 2012-10-22 | 2012-10-22 | Corrugated pipe structure based self-compensating electric ball valve |
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| CN (1) | CN103775671A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005835A (en) * | 2019-04-04 | 2019-07-12 | 苏州纽威阀门股份有限公司 | A kind of baiting valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641252A (en) * | 2005-01-06 | 2005-07-20 | 铁岭阀门(集团)特种阀门有限责任公司 | Zero-friction sealed valve |
| CN201090771Y (en) * | 2007-09-29 | 2008-07-23 | 陈占基 | Corrugated pipe ball valve |
| US20110266484A1 (en) * | 2010-04-30 | 2011-11-03 | Fisher Controls International Llc | Floating Ball Valve Seal With Bellows and C-Seal |
| CN102734486A (en) * | 2012-06-21 | 2012-10-17 | 镇江市铸造阀门厂有限公司 | Valve assembly sealing device of low temperature ball valve |
| CN202946708U (en) * | 2012-10-22 | 2013-05-22 | 中国核动力研究设计院 | Self-compensating electric ball valve based on bellows structure |
-
2012
- 2012-10-22 CN CN201210405284.3A patent/CN103775671A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641252A (en) * | 2005-01-06 | 2005-07-20 | 铁岭阀门(集团)特种阀门有限责任公司 | Zero-friction sealed valve |
| CN201090771Y (en) * | 2007-09-29 | 2008-07-23 | 陈占基 | Corrugated pipe ball valve |
| US20110266484A1 (en) * | 2010-04-30 | 2011-11-03 | Fisher Controls International Llc | Floating Ball Valve Seal With Bellows and C-Seal |
| CN102734486A (en) * | 2012-06-21 | 2012-10-17 | 镇江市铸造阀门厂有限公司 | Valve assembly sealing device of low temperature ball valve |
| CN202946708U (en) * | 2012-10-22 | 2013-05-22 | 中国核动力研究设计院 | Self-compensating electric ball valve based on bellows structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005835A (en) * | 2019-04-04 | 2019-07-12 | 苏州纽威阀门股份有限公司 | A kind of baiting valve |
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Application publication date: 20140507 |