CN103090019A - Regulating valve of axial flow sleeve - Google Patents
Regulating valve of axial flow sleeve Download PDFInfo
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- CN103090019A CN103090019A CN2013100465983A CN201310046598A CN103090019A CN 103090019 A CN103090019 A CN 103090019A CN 2013100465983 A CN2013100465983 A CN 2013100465983A CN 201310046598 A CN201310046598 A CN 201310046598A CN 103090019 A CN103090019 A CN 103090019A
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Abstract
The invention discloses a regulating valve of an axial flow sleeve. The regulating valve of the axial flow sleeve comprises a split type valve body, a valve element, a guide sleeve, a valve cage, a valve seat, a valve cylinder, a transmission valve rod and a driving valve rod, wherein the driving valve rod can enable the transmission valve rod to axially move inside the guide sleeve. An automatic valve cylinder aligning mechanism is arranged between the other end of the transmission valve rod and the valve cylinder, the automatic valve cylinder aligning mechanism comprises a center regulating sleeve and a center regulating ring, the center regulating sleeve and the center regulating ring are both supported on the transmission valve rod, and a moving groove with two sides closed is formed between the center regulating sleeve and the center regulating ring. A valve cylinder cover is fixedly connected on the valve cylinder, the valve cylinder is clamped inside the moving groove through the valve cover, and the valve cylinder can move on the axial direction and the radical direction of the transmission valve rod inside the moving groove through the valve cylinder cover. The valve cylinder and the valve cage of the regulating valve of the axial flow sleeve can regulate center automatically, the matching precision of the valve cylinder and the valve cage is improved, a jamming phenomenon is not prone to occurring, a service life is long, and reliability is high.
Description
Technical field
The present invention relates to a kind of axial flow sleeve adjusting valve, belong to the automatic control technology field, be mainly used in the industries such as oil, rock gas.
Background technique
At present, the modulating valve technology of China has obtained certain progress by constantly introducing innovation and development, axial flow control valve occurred in some industry, has improved to a certain extent cut-off control valve defective in use, but still has had some problems.Structure below in conjunction with this two classes modulating valve, it is carried out strengths and weaknesses analysis: cut-off control valve is owing to valve cage being housed and being provided with the valve cylinder of equalizing orifice, can reduce the unbalanced force of medium effect, thereby reduce actuator's size, simultaneously, can obtain different Flow characteristicss, reduce the advantage of flow noise and spool vibration, but owing to using double sealing structure, concentricity is not enough, and leakage rate is large.Simultaneously, due to " S " type of employing runner, make difficulty, the fluid resistance coefficient is large, energy consumption is many, easily produce resonance, cavitation, valve cage stops up, the defectives such as valve cylinder jam, Chinese patent CN202252318U discloses a kind of Split piston axial flow control valve, and Chinese patent CN201513629U discloses a kind of axial-flow type valve, and these modulating valve have absorbed the advantage of cut-off control valve tube-in-tube structure.Simultaneously, " S " type runner is become the axially symmetric shape runner, reduced the fluid resistance coefficient, reduced energy consumption, alleviated noise, resonance and cavitation phenomenons.But due to the integrated type valve body, for assembling and maintenance bring a large amount of difficulties, especially the second modulating valve, need a large amount of special tools in maintenance, and is too high with attendant's competency profiling to assembling, simultaneously, owing to adopting the casting valve body, complex structure is made difficulty, fault in material is more, and Security is not high.Secondly, although the first modulating valve is provided with guide sleeve, also be provided with graphite column, but still can not solve preferably the problem of double sealing structure concentricity deficiency, valve cage (guide sleeve) namely occurs and scratch with valve cylinder is eccentric, the jam phenomenon is leaked in the graphite column wearing and tearing.The 3rd, too pay close attention to change runner form in design, other factors are considered not proper, comprising: the radial end face sealing is set on a. valve cylinder, causes unbalanced construction, can not adapt to the high pressure operating mode; B. split type valve body entrance all less than standard flange entrance 10%-20% or higher, causes negotiability to descend.
Summary of the invention
Technical problem to be solved by this invention is the defective that overcomes prior art, and a kind of axial flow sleeve adjusting valve is provided, and its valve cylinder and valve cage can self-alignings, improved the quality of fit of valve cylinder and valve cage, be not prone to the jam phenomenon, long service life, reliability is high.
in order to solve the problems of the technologies described above, technological scheme of the present invention is: a kind of axial flow sleeve adjusting valve, comprise split type valve body, spool, guide sleeve, valve cage, valve seat, valve cylinder and transmission valve rod and can make transmission valve rod axially movable actuate valve stem in guide sleeve, spool is arranged in split type valve body, one end of transmission valve rod can be inserted in guide sleeve with moving axially, guide sleeve is inserted in spool, one end of actuate valve stem passes split type valve body, the other end inserts spool and is connected with the transmission valve handle activity, valve cylinder is inserted in valve cage movably, have some axial flows holes on valve cage, and valve cage is fixedly connected with valve seat, valve seat is arranged in split type valve body, be provided with valve cylinder automatic centering mechanism between the other end of described transmission valve rod and valve cylinder, valve cylinder automatic centering mechanism comprises aligning cover and aligning ring, aligning cover and aligning ring all are bearing on the transmission valve rod, form the moving trough of a both sides sealing between aligning cover and aligning ring, be fixedly connected with the valve cylinder lid on described valve cylinder, valve cylinder covers by valve cylinder and is stuck in moving trough, and valve cylinder covers by valve cylinder can be on the axial direction of transmission valve rod in moving trough and move in the radial direction.
Further, also be provided with the self-tightening sealing structure of floating in described split type valve body, the self-tightening sealing structure of should floating comprises the first seal ring, the second seal ring and preloading spring, the first seal ring is arranged on the contact position of valve seat and split type valve body, the second seal ring is arranged on the contact position of spool and valve cage, one end of preloading spring is against on spool, and the other end is against on valve cage, and the diameter of the first seal ring is less than the diameter of the second seal ring.
Further, described split type valve body is formed by fixedly connecting by left valve barrel and right valve barrel, and valve gap is installed on right valve barrel, and an end of described actuate valve stem is inserted in valve gap.
Further, described split type valve body is formed by fixedly connecting by left valve barrel, right valve barrel and the middle valve body between left valve barrel and right valve barrel, on middle valve body, valve gap is installed, and an end of described actuate valve stem is inserted in valve gap.
Further, on described spool, stuffing box gland is installed, described transmission valve rod also is inserted in stuffing box gland.
Further, be set with the guide pin bushing flange on described guide sleeve, this guide pin bushing flange is fixedly connected on spool by screw.
Further, described spool is formed by fixedly connecting by valve core and valve core case.
Further, described valve cylinder and valve cylinder lid is structure as a whole.
Further, described guide sleeve is formed by outer bush and the interlocking of interior guide pin bushing.
Further, described split type valve body forms by the forged steel manufacturing.
After having adopted technique scheme, the present invention has following beneficial effect:
1, adopt the split type valve body of forged steel, improved the valve inner Organizational Structure, crystal grain thinning, thereby the mechanical propertys such as its shock resistance, plasticity, toughness all are better than the split type valve body of cast steel, have promoted the Safety performance of valve, simultaneously, split-type structural is safeguarded simple, convenient;
2, adopt valve cylinder automatic centering mechanism, need not to adopt the easily damaged parts alignings such as graphite column, improve the quality of fit of valve cylinder and valve cage, be difficult for jam, long service life, reliability is high;
3, adopt floating type self-tightening sealing structure, make split type valve inner component stress balance, further reduce the torque demand of actuate valve stem, can be used for the high pressure operating mode, and the self-energized seal design, improved leakage class, simultaneously, in conjunction with split type valve body structure, need not to adopt gateway reducing design, improve the maximum flow ability of split type valve body, enlarge adjustable extent.
Description of drawings
Fig. 1 is the structural representation of the first structure of axial flow sleeve adjusting valve of the present invention;
Fig. 2 is the structural representation of the second structure of axial flow sleeve adjusting valve of the present invention;
Fig. 3 is the enlarged diagram of valve cylinder automatic centering of the present invention mechanism;
Fig. 4 is the enlarged diagram of unsteady self-tightening sealing structure of the present invention;
Fig. 5 is the structural representation that the present invention adds the maintenance piece.
Embodiment
Content of the present invention is easier to be expressly understood in order to make, and the below is according to specific embodiment and by reference to the accompanying drawings, and the present invention is further detailed explanation,
Embodiment one
as Fig. 1, 3, shown in 4, a kind of axial flow sleeve adjusting valve, comprise split type valve body 1, spool 2, guide sleeve 5, valve cage 8, valve seat 9, valve cylinder 10 and transmission valve rod 4 and can make transmission valve rod 4 in the interior axially movable actuate valve stem 6 of guide sleeve 5, spool 2 is arranged in split type valve body 1, one end of transmission valve rod 4 can be inserted in guide sleeve 5 with moving axially, guide sleeve 5 is inserted in spool 2, one end of actuate valve stem 6 passes split type valve body 1, the other end inserts spool 2 and is flexibly connected with transmission valve rod 4, valve cylinder 10 is inserted in valve cage 8 movably, have some axial flows hole 8-1 on valve cage 8, and valve cage 8 is fixedly connected with valve seat 9, valve seat 9 is arranged in split type valve body 1, be provided with valve cylinder automatic centering mechanism between the other end of transmission valve rod 4 and valve cylinder 10, valve cylinder automatic centering mechanism comprises aligning cover 11 and aligning ring 7, aligning cover 11 and aligning ring 7 all are bearing on transmission valve rod 4, form the moving trough 117 of a both sides sealing between aligning cover 11 and aligning ring 7, be fixedly connected with valve cylinder lid 14 on described valve cylinder 10, valve cylinder 10 covers 14 by valve cylinder and is stuck in moving trough 117, and valve cylinder 10 covers 14 by valve cylinder can be on the axial direction of transmission valve rod 4 in moving trough 117 and move in the radial direction.Split type valve body 1 is formed by fixedly connecting by left valve barrel 1-1 and right valve barrel 1-2, and valve gap 13 is installed on right valve barrel 1-2, and an end of actuate valve stem 6 is inserted in valve gap 13.Stuffing box gland 3 is installed on spool 2, and transmission valve rod 4 also is inserted in stuffing box gland 3.Be set with guide pin bushing flange 12 on guide sleeve 5, this guide pin bushing flange 12 is fixedly connected on spool 2 by screw.Valve cylinder 10 is structure as a whole with valve cylinder lid 14.
As shown in Figure 4, also be provided with the self-tightening sealing structure of floating in split type valve body 1, the self-tightening sealing structure of should floating comprises the first seal ring 15, the second seal ring 16 and preloading spring 17, the first seal ring 15 is arranged on the contact position of valve seat 9 and split type valve body 1, the second seal ring 15 is arranged on the contact position of spool 2 and valve cage 8, one end of preloading spring 17 is against on spool 2, and the other end is against on valve cage 8, and the diameter of the first seal ring 15 is less than the diameter of the second seal ring 16.
Split type valve body 1 forms by the forged steel manufacturing.
Embodiment two
as Fig. 2, 3, shown in 4, a kind of axial flow sleeve adjusting valve, comprise split type valve body 1, spool 2, guide sleeve 5, valve cage 8, valve seat 9, valve cylinder 10 and transmission valve rod 4 and can make transmission valve rod 4 in the interior axially movable actuate valve stem 6 of guide sleeve 5, spool 2 is arranged in split type valve body 1, one end of transmission valve rod 4 can be inserted in guide sleeve 5 with moving axially, guide sleeve 5 is inserted in spool 2, one end of actuate valve stem 6 passes split type valve body 1, the other end inserts spool 2 and is flexibly connected with transmission valve rod 4, valve cylinder 10 is inserted in valve cage 8 movably, have some axial flows hole 8-1 on valve cage 8, and valve cage 8 is fixedly connected with valve seat 9, valve seat 9 is arranged in split type valve body 1, be provided with valve cylinder automatic centering mechanism between the other end of transmission valve rod 4 and valve cylinder 10, valve cylinder automatic centering mechanism comprises aligning cover 11 and aligning ring 7, aligning cover 11 and aligning ring 7 all are bearing on transmission valve rod 4, form the moving trough 117 of a both sides sealing between aligning cover 11 and aligning ring 7, be fixedly connected with valve cylinder lid 14 on described valve cylinder 10, valve cylinder 10 covers 14 by valve cylinder and is stuck in moving trough 117, and valve cylinder 10 covers 14 by valve cylinder can be on the axial direction of transmission valve rod 4 in moving trough 117 and move in the radial direction.Split type valve body 1 is formed by fixedly connecting by left valve barrel 1-1, right valve barrel 1-2 and the middle valve body 1-3 between left valve barrel 1-1 and right valve barrel 1-2, on middle valve body 1-3, valve gap 13 is installed, and an end of actuate valve stem 6 is inserted in valve gap 13.
Be set with guide pin bushing flange 12 on guide sleeve 5, this guide pin bushing flange 12 is fixedly connected on spool 2 by screw.
Spool 2 is formed by fixedly connecting by valve core 2-1 and valve core case 2-2.
As shown in Figure 4, also be provided with the self-tightening sealing structure of floating in split type valve body 1, the self-tightening sealing structure of should floating comprises the first seal ring 15, the second seal ring 16 and preloading spring 17, the first seal ring 15 is arranged on the contact position of valve seat 9 and split type valve body 1, the second seal ring 15 is arranged on the contact position of spool 2 and valve cage 8, one end of preloading spring 17 is against on spool 2, and the other end is against on valve cage 8, and the diameter of the first seal ring 15 is less than the diameter of the second seal ring 16.
Split type valve body 1 forms by the forged steel manufacturing.
Modulating valve as shown in Figure 1 is the two-part valve body structure, is applicable to the pet-valve of DN50-DN100.Modulating valve as shown in Figure 2 is the 3 stops valve body structure, is applicable to the major valve of DN150-DN300.All split type valve bodies 1 all adopt the forged steel manufacturing, and are safe and reliable, easy to manufacture.Simultaneously, as shown in Figure 5, by maintenance piece 18 is set, can realize the modulating valve on-line maintenance, easy to maintenance.
Medium changes the position of valve cylinder 10 by split type valve body 1 left side inflow under the driving of actuate valve stem 6, the orifice size of regulating valve cage 8, and then the flow of control media or pressure from split type valve body 1 right side outflow, enter the downstream.
The working principle of valve cylinder automatic centering mechanism is as follows:
utilize lock nut 19 aligning cover 11 to be pressed on the left side of aligning ring 7, and to make the distance between its right end face of aligning ring 7 left end face and aligning cover 11 be that the groove width m of moving trough 117 is greater than the wall thickness M of valve cylinder lid 14, the inner diameter D of valve cylinder lid 14 is greater than the outside diameter d of aligning cover 11 simultaneously, guarantee valve cylinder 10 and aligning cover 11, aligning ring 7 is axially reaching the gap of existence in the radial direction greater than the gap of valve cylinder 10 outer walls and valve cage 8 inwalls, can be on the axial direction of transmission valve rod 4 in moving trough 117 and move in the radial direction thereby make valve cylinder 10 to cover 14 by valve cylinder, valve cylinder 10 outer walls can horizontally slip take valve cage 8 inwalls as guide surface, realize the automatic centering function.Simultaneously, this structure can also reduce part concentricity and assembly precision requirement, reduces manufacture difficulty.
The working principle of floating type self-tightening sealing structure is as follows:
The unbalanced force that utilizes medium to act on valve cage 8 is realized the self-tightening sealing function, and when circulating without medium in valve, 17 pairs of the first seal rings 15 of preloading spring carry out pre-pressing, realizes sealing; When the medium circulation is arranged in valve, direction such as the figure direction of arrow.Due to the sealing surface of the first seal ring 15 and the second seal ring 16 on different diameters, as shown in a, c in figure.Fa=Sa * P, Fc=Sc * P, wherein: Sa is first seal ring 15 place's active areas, and Sc is second seal ring 16 place's active areas, and P is the medium working pressure.Because Sa〉Sc, so Fa〉Fc, finally realize the self-tightening sealing function, improve leakage class, simultaneously, because valve cylinder 10 does not arrange sealing strip diametrically, realized that therefore the medium effect of valve cylinder 10 makes a concerted effort to be " zero ", and then in the situation that reduce actuator's performance requirement, can guarantee that also modulating valve operates steadily reliably.
Above-described specific embodiment; purpose of the present invention, technological scheme and beneficial effect are further described; institute is understood that; the above is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. axial flow sleeve adjusting valve, comprise split type valve body (1), spool (2), guide sleeve (5), valve cage (8), valve seat (9), valve cylinder (10) and transmission valve rod (4) and can make transmission valve rod (4) axially movable actuate valve stem (6) in guide sleeve (5), spool (2) is arranged in split type valve body (1), one end of transmission valve rod (4) can be inserted in guide sleeve (5) with moving axially, guide sleeve (5) is inserted in spool (2), one end of actuate valve stem (6) passes split type valve body (1), the other end inserts spool (2) and is flexibly connected with transmission valve rod (4), valve cylinder (10) is inserted in valve cage (8) movably, have some axial flows holes (8-1) on valve cage (8), and valve cage (8) is fixedly connected with valve seat (9), valve seat (9) is arranged in split type valve body (1), it is characterized in that: be provided with valve cylinder automatic centering mechanism between the other end of described transmission valve rod (4) and valve cylinder (10), valve cylinder automatic centering mechanism comprises aligning cover (11) and aligning ring (7), aligning cover (11) and aligning ring (7) all are bearing on transmission valve rod (4), form the moving trough (117) of a both sides sealing between aligning cover (11) and aligning ring (7), be fixedly connected with valve cylinder lid (14) on described valve cylinder (10), valve cylinder (10) covers (14) by valve cylinder and is stuck in moving trough (117), and valve cylinder (10) covers (14) by valve cylinder can be on the axial direction of transmission valve rod (4) in moving trough (117) and move in the radial direction.
2. axial flow sleeve adjusting valve according to claim 1, it is characterized in that: also be provided with the self-tightening sealing structure of floating in described split type valve body (1), the self-tightening sealing structure of should floating comprises the first seal ring (15), the second seal ring (16) and preloading spring (17), the first seal ring (15) is arranged on the contact position of valve seat (9) and split type valve body (1), the second seal ring (15) is arranged on the contact position of spool (2) and valve cage (8), one end of preloading spring (17) is against on spool (2), the other end is against on valve cage (8), the diameter of the first seal ring (15) is less than the diameter of the second seal ring (16).
3. axial flow sleeve adjusting valve according to claim 1 and 2, it is characterized in that: described split type valve body (1) is formed by fixedly connecting by left valve barrel (1-1) and right valve barrel (1-2), valve gap (13) is installed on right valve barrel (1-2), and an end of described actuate valve stem (6) is inserted in valve gap (13).
4. axial flow sleeve adjusting valve according to claim 1 and 2, it is characterized in that: described split type valve body (1) by left valve barrel (1-1), right valve barrel (1-2) and be arranged in left valve barrel (1-1) and right valve barrel (1-2) between valve body (1-3) be formed by fixedly connecting, valve gap (13) is installed on middle valve body (1-3), and an end of described actuate valve stem (6) is inserted in valve gap (13).
5. axial flow sleeve adjusting valve according to claim 1 and 2, it is characterized in that: stuffing box gland (3) is installed on described spool (2), and described transmission valve rod (4) also is inserted in stuffing box gland (3).
6. axial flow sleeve adjusting valve according to claim 1 and 2, it is characterized in that: be set with guide pin bushing flange (12) on described guide sleeve (5), this guide pin bushing flange (12) is fixedly connected on spool (2) by screw.
7. axial flow sleeve adjusting valve according to claim 4, it is characterized in that: described spool (2) is formed by fixedly connecting by valve core (2-1) and valve core case (2-2).
8. axial flow sleeve adjusting valve according to claim 3 is characterized in that: described valve cylinder (10) is structure as a whole with valve cylinder lid (14).
9. axial flow sleeve adjusting valve according to claim 4 is characterized in that: described guide sleeve (5) is formed by outer bush (5-1) and interior guide pin bushing (5-2) interlocking.
10. axial flow sleeve adjusting valve according to claim 1, it is characterized in that: described split type valve body (1) forms by the forged steel manufacturing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310046598.3A CN103090019B (en) | 2013-02-06 | 2013-02-06 | Regulating valve of axial flow sleeve |
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| CN201310046598.3A CN103090019B (en) | 2013-02-06 | 2013-02-06 | Regulating valve of axial flow sleeve |
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| CN103090019B CN103090019B (en) | 2015-04-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671995A (en) * | 2013-12-25 | 2014-03-26 | 特瑞斯信力（北京）流体科技有限公司 | Two-piston type axial flow regulating valve |
| CN105114649A (en) * | 2015-09-16 | 2015-12-02 | 吴忠仪表有限责任公司 | Double-orientation adjusting structure |
| CN106286920A (en) * | 2016-08-24 | 2017-01-04 | 天津大衍天成科技有限公司 | A kind of stagewise valve |
| CN111810650A (en) * | 2020-07-25 | 2020-10-23 | 浙江中德自控科技股份有限公司 | Axial-flow single-seat valve with automatic impurity removal valve seat |
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| CN101631977A (en) * | 2007-02-13 | 2010-01-20 | 莫克维尔德阀门公司 | Throttle valve |
| CN201513629U (en) * | 2010-01-20 | 2010-06-23 | 江苏德邦流体控制有限公司 | Axial-flow type valve |
| US20100187462A1 (en) * | 2009-01-27 | 2010-07-29 | Davies Jr Lonnie Oscar | Axial flow control valves having an internal actuator |
| CN202252318U (en) * | 2011-10-15 | 2012-05-30 | 江苏神通阀门股份有限公司 | Separated piston axial-flow type regulating valve |
| CN203082224U (en) * | 2013-02-06 | 2013-07-24 | 特瑞斯能源装备股份有限公司 | Axial flow sleeve regulating valve |
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2013
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| US4327757A (en) * | 1979-07-20 | 1982-05-04 | Machinefabriek Mokveld B.V. | Control valve |
| CN101631977A (en) * | 2007-02-13 | 2010-01-20 | 莫克维尔德阀门公司 | Throttle valve |
| US20100187462A1 (en) * | 2009-01-27 | 2010-07-29 | Davies Jr Lonnie Oscar | Axial flow control valves having an internal actuator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671995A (en) * | 2013-12-25 | 2014-03-26 | 特瑞斯信力（北京）流体科技有限公司 | Two-piston type axial flow regulating valve |
| CN103671995B (en) * | 2013-12-25 | 2016-06-08 | 特瑞斯能源装备股份有限公司 | Dual Piston axial flow regulates valve |
| CN105114649A (en) * | 2015-09-16 | 2015-12-02 | 吴忠仪表有限责任公司 | Double-orientation adjusting structure |
| CN106286920A (en) * | 2016-08-24 | 2017-01-04 | 天津大衍天成科技有限公司 | A kind of stagewise valve |
| CN111810650A (en) * | 2020-07-25 | 2020-10-23 | 浙江中德自控科技股份有限公司 | Axial-flow single-seat valve with automatic impurity removal valve seat |
| CN111810650B (en) * | 2020-07-25 | 2021-08-24 | 浙江中德自控科技股份有限公司 | Axial-flow single-seat valve with automatic impurity removal valve seat |
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