CN1834513A - Valve - Google Patents
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- CN1834513A CN1834513A CN 200610020678 CN200610020678A CN1834513A CN 1834513 A CN1834513 A CN 1834513A CN 200610020678 CN200610020678 CN 200610020678 CN 200610020678 A CN200610020678 A CN 200610020678A CN 1834513 A CN1834513 A CN 1834513A
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Abstract
The present invention discloses a kind of valve which can be used in the medium-pressure or high-pressure environment in which the fluid can be bidirectionally flowed, and can use smaller switching moment to provide enough seal specific pressure and is simple in structure. Said valve is characterized by that in the sealing cavity of said valve a lower seal surface and an upper seal surface are coaxially superimposed, and a seal unit formed from at least one semi-moving plate and one moving plate is arranged opposite to said lower seal surface and upper seal surface, and on the lower seal surface and upper seal surface and on the semi-moving plate and moving plate the axial through holes are cut and arranged along the circumferential direction respectively. The spacing structure of the semi-moving plate and moving plate can make these through holes be communicated with flow channel, and when the semi-moving plate and moving plate are relatively turned, the relative sliding of superimposed contact surfaces can make the semi-moving plate and moving plate produce relative axial movement.
Description
Technical field
The present invention relates to a kind of valve, especially a kind ofly be used for the valve that environment that middle and high pressure and two-way fluid flow uses.
Background technique
Usually the leading indicator of weighing valve performance has four: sealing, reliability, action and modulability and valve resistance, action typically refers to the switch moment and the switching speed of valve with modulability, the sealability of valve and sealing reliability be valve design with make in maximum difficult point.The structure type of valve has been determined the movement locus of valve movable body, and then has determined the limit that above-mentioned performance index can reach.Common valve has basic structure types such as gate valve, butterfly valve, ball valve, stopcock, stop valve in the industry at present.Sealing divides external sealed and interior sealing, under the situation of equivalent material and impacting force, external sealed is relevant with the forms of motion of the operating device of valve, and the operating stem of gate valve, stop valve is sealed into the sealing that endwisely slips, external sealed just implements difficulty, and reliability is also relatively poor.The operating stem of butterfly valve, ball valve, stopcock is sealed into a rotary seal, and external sealed just implements and is easier to, and reliability is also better.But generally speaking, the external sealed total energy solves, and interior sealing then solves much more difficult.Especially for gas seal, because the molecular diameter of gas is about about 0.003 μ m, common machining can not be worked into valve sealing face so high precision.Therefore normally on sealing surface, exert pressure, remedy the deficiency of machining accuracy by the material deformation of sealing surface.Present most gas control valve sealing surface all is the wear-resistant flexible material that adopts as fill poly-tetrafluoro class, but because the deficiency of soft seal valve aspect life-span and intensity, especially to the control of high temperature, pressurized gas, the soft seal valve can't satisfy its harsh performance requirement, the most good still metal hard-sealing valve on the engineering.Because the intensity height of metal is desired to make sealing surface to produce resiliently deformable and is reached excellent sealing performance, needs great positive pressure.Usually hard sealing all is to adopt " linear sealing ", its essence is the one or multi-channel annular sealing strip that the area of contact of valve movable body and meront is reduced to outer, longshore current road, so just can reduce bearing area greatly, improves seal pressure.In addition, because most metallic elastic amount of deformation is limited, if adopt face seal just to be easy to generate orientation problem, and the mistake that adopts " linear sealing " to produce is located available less relatively power and is made metallic material produce plastic deformation or corrected by abrasive method.
Usually the operating stem of stop valve is a threaded stem, and it is many to realize that metal hard-sealing just is easy to, because its movable valve plate is vertical disengaging with the relative movement of static seal face, can be easy to produce complicated raceway groove on two planes, realizes labyrinth sealing.Add the enlarging function that the screw thread on the stop valve operating stem has power, enough big seal pressure can be provided.Make sealing surface in movable valve plate of the stage that does not need power or motion that can only be sluggish but the disadvantage of threaded stem stop valve is the little oblique angle screw thread on the operating stem, the switching speed of valve is subjected to great influence.Straight-bar type stop valve (abbreviation flap type) is a mutation of stop valve, just changed threaded stem into straight-bar, so just improved switching speed, but this has also just lost the enlarging function of the power that the little oblique angle screw thread on the threaded stem stop valve operating stem has, also just be difficult to the seal pressure that provides enough, particularly when caliber is big, pressure is higher, when hydrodynamic pressure is reverse, valve plate even can be backed down.
The switch moment of valve and switching speed also are important performances, movable body was vertical substantially with hydrodynamic pressure when the rotary movement of butterfly valve, ball valve, stopcock made valve opening and closing, and operational stroke is short, so superior performance, and the rectilinear motion mode of stop valve makes switch moment and switching speed not to take into account.
Except that Float ball valve, above-mentioned valve all has only a sealing surface, and when the two-way flow of medium possibility, the sealability of valve, state will change to some extent.The patent No. is 200510067535.1, denomination of invention is " double seal valve ", the patent No. is 87100516.6, denomination of invention is that " valve sealing structure of bracing type " and the patent No. are 00111674.6, denomination of invention all discloses a kind of receipts support formula valve for the patent of invention specification of " the expanding-shut type valve sealing structure that the valve rod angle of swing opens and closes ", receive support formula valve two sealing surfaces are arranged, no matter fluid is from where, it is self-tightening and another for from pine that two sealing surfaces must have one, so this is a kind of good two-way self-tightening sealing, close the good valve mechanism of back intrinsic safety.The movable valve plate of receiving support formula valve is vertical disengaging with the relative movement of sealing surface, belongs to harmless switch, can be easy to produce on two sealing surfaces complicated raceway groove simultaneously again, realizes labyrinth sealing, realizes the better seal performance easily.But the bracing type valve is owing to there are two sealing surfaces, if before and after the valve closing, there is situation about contacting with valve body in operating device on the transfer route of two valve plate pressure, then be easy to generate orientation problem, make two sealing surfaces in fact have only one to work, so just make the design relative complex of the built-in function mechanism of valve.
In view of above analysis as can be seen, in the design of the hard sealed valve of existing all gases variety of issue is arranged all, the manufacture cost that technical performance is high is high, even does not almost manufacture.Low cost of manufacture, some performance parameter is difficult to satisfy the needs of IE Industrial Engineering again.The hard sealed valve design of high pressure, high-temperature gas also needs some other solution.
Summary of the invention
Technical problem to be solved by this invention provides the less switch moment of a kind of usefulness can provide enough seal pressures and valve simple in structure.
The technical solution adopted for the present invention to solve the technical problems is: this valve comprises the valve body that is provided with Seal cage, the import of the circulation passage of connection Seal cage and lower sealing surface and the last sealing surface that the outlet port is respectively arranged with positioned opposite, support is also coaxial superimposed in the Seal cage has and at least one half moving plate of lower sealing surface and last sealing surface positioned opposite and the sealing unit of a moving plate formation, the two ends of sealing unit are sealing surface, form sealing thereby utilize the sealing surface at the two ends of sealing unit to fit with lower sealing surface and last sealing surface respectively.Offer the axial through hole that along the circumferential direction distributes on lower sealing surface and last sealing surface and half moving plate and moving plate, be connected with actuating unit on the moving plate, the limit structure that half moving plate and moving plate pass through makes through hole be communicated with circulation passage.When half moving plate and moving plate relatively rotated, the slide relative of stacked surface of contact produced half moving plate and moving plate to move to axial between half moving plate and the moving plate.
Further be that stacked surface of contact is the helicoid that along the circumferential direction distributes between half moving plate and the moving plate.
Further be that helicoid is at least two sections that along the circumferential direction distribute.
Further be, the excircle of half moving plate is provided with spacing block set, the Seal cage inwall is provided with and the suitable spacing rib of spacing block set shape and position, and the end face of the helicoid on spacing block set, spacing rib and half moving plate and the moving plate constitutes limit structure jointly.
The invention has the beneficial effects as follows: this valve combines the characteristics of ball valve, butterfly valve, allows movable valve plate rotatablely move, and has the bracing type valve and realize the characteristics that seal easily.Owing to adopted the technological scheme of surface of contact stacked between half moving plate and the moving plate for the helicoid that along the circumferential direction distributes, combine the advantage of the power enlarging function that screw thread has on the screw thread rod-type stop valve operating stem, can utilize the power enlarging function of helicoid, provide enough uniform pressures with less switch moment, make sealing surface produce enough seal pressures, therefore can reach good sealing effect.Simultaneously, utilize its simple structure, the opening process of valve is divided into the DecryptDecryption envelope and changes valve two stages of resistance, the pass closed procedure of valve is divided into changes the valve resistance and seal two stages.Owing to changing the valve resistance stage, half moving plate be very little in positive pressure that moving plate provides or situation about disappearing under be rotated motion, therefore wearing and tearing are very little, and in sealing or DecryptDecryption envelope process sealing surface for vertically pressing or break away from, so sealing reliability height, the life-span is long.Behind valve opening, sealing surface is all covered, and fluid can not wash away sealing surface, so the reliability of sealing surface is guaranteed by the through hole overcurrent.This valve mechanism is simple, and part is few, and manufacturing is easy, low cost of manufacture.All parts of this valve mechanism all can adopt metal to make, thereby form metal hard-sealing, thereby can be used for high temperature, high pressure.This valve mechanism compactness, a plurality of levels of can also be easily moving plate and half moving plate being formed of sealing unit link up, and produce Super high pressure valve.This valve switch speed is fast, has intrinsic safety, its through hole all can adopt fan-shaped perforate, its aperture and corner are linear relationship, therefore can be used as the valve body part of other kind valves such as safety valve, modulating valve, can be widely used in and require sealability height, gas two-way flow, switch is frequent and switching speed is fast occasion.
Description of drawings
Fig. 1 is the schematic representation of valve of the present invention.
Fig. 2 is the split figure of the hermetic unit of one embodiment of the present invention.
Fig. 3 is the split figure of the hermetic unit of another embodiment of the invention.
Fig. 4 is the plan view of half moving plate of the present invention.
Fig. 5 is the plan view of Fig. 4.
Fig. 6 is the plan view of moving plate of the present invention.
Fig. 7 is the plan view of Fig. 6.
Fig. 8 is the plan view of press table of the present invention.
Fig. 9 is the plan view of top board of the present invention.
Figure 10 is the plan view of support ring of the present invention.
Figure 11 is the axonometric drawing of moving plate of the present invention.
Be labeled as among the figure: lower sealing surface 1, last sealing surface 2, half moving plate 3, moving plate 4, through hole 5, through hole 6, through hole 7, through hole 8, operating stem 9, press table 10, top board 11, support ring 12, spacing block set 13, spacing rib 14, groove 15, groove 16.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
As Fig. 1～shown in Figure 11, valve of the present invention comprises the valve body that is provided with Seal cage, the import of the circulation passage of connection Seal cage and lower sealing surface 1 and the last sealing surface 2 that the outlet port is respectively arranged with positioned opposite, support is also coaxial superimposed in the Seal cage has and at least one half moving plate 3 of lower sealing surface 1 and last sealing surface 2 positioned opposite and the sealing unit of moving plate 4 formations, the two ends of sealing unit are sealing surface, form sealing thereby utilize the sealing surface at the two ends of sealing unit to fit with lower sealing surface and last sealing surface respectively.On lower sealing surface 1 and last sealing surface 2, offer axial through hole 5 and the through hole 6 that along the circumferential direction distributes, offer the axial through hole 7 and the through hole 8 that along the circumferential direction distribute on half moving plate 3 and the moving plate 4, half moving plate 3 and moving plate 4 relatively rotate with upper and lower sealing surface, and make through hole 5, through hole 6, through hole 7, through hole 8 be communicated with or break away from circulation passage by limit structure, can prevent the fluid scouring that sealing surface is passed through like this, also be convenient to throw off sealing easily simultaneously in open stage.Be connected with actuating unit on the moving plate 4, moving plate 4 rotated in order to torque to be provided.When half moving plate 3 and moving plate 4 relatively rotate, the slide relative of stacked surface of contact moves to axial half moving plate 3 and moving plate 4 generations between half moving plate 3 and the moving plate 4, and its effect all is that the end thrust that produces when utilizing moving plate to rotate pushes half moving plate axial motion.
The slide relative of stacked surface of contact moves to axial half moving plate 3 and moving plate 4 generations between half moving plate 3 and the moving plate 4, can adopt multiple mode, for example stacked surface of contact is a mutually adaptive concaveconvex structure etc. between end cam structure, half moving plate 3 and the moving plate 4, but preferably adopt the helicoid of surface of contact stacked between half moving plate 3 and the moving plate 4 for along the circumferential direction distributing, can utilize the power enlarging function of helicoid, provide enough uniform pressures with less switch moment, make sealing surface produce enough seal pressures.
In order to make the thrust that acts on half moving plate 3 even, helicoid is preferably at least two sections and along the circumferential direction distributes.
In order to improve its sealing reliability, can adopt a moving plate 4 and two and half moving plates 3 to constitute the form of sealing unit.For example, the two ends of moving plate 4 are coaxial superimposed respectively, and surface of contact stacked between 3, two half moving plates 3 of half moving plate and the moving plate 4 is arranged is along the circumferential direction evenly to distribute and the opposite helicoid of rotation direction, and this set makes the exterior edge face of two and half moving plates 3 be sealing surface.Like this, in DecryptDecryption envelope stage and the sealing stage of Kai Heguan, the active part of two sealing surfaces all is vertical motions in the sealing unit, so sealing reliability is just higher.
In order to reach better sealing effect, half moving plate 3 that contacts with last sealing surface 2 with lower sealing surface 1 is or/and on the sealing surface of moving plate 4, be provided with groove 15 and groove 16 around through hole 5 and through hole 6.That is to say that the sealing surface that contacts with lower sealing surface 1 is the sealing surface of half moving plate 3, with the sealing surface of last sealing surface 2 contacts according to different settings, can be the sealing surface of half moving plate 3, also can be the sealing surface of moving plate 4.Same reason, the groove that lower sealing surface 1 and last sealing surface 2 are provided with around through hole 5,6 also can play same effect.
Like this, when closing: changing the valve resistance stage, because helicoid is the lifting structure form, and can the ratio sealing surface of its making is coarse, therefore the helicoid of the moving plate helicoid that can drive half moving plate allows half moving plate slide on the sealing surface of press table, driving half moving plate 3 by the helicoid of moving plate 4 rotates, after limited under half effect of moving plate 3 at limit structure, half moving plate 3 can not rotatablely move again, at this moment through hole 5 on lower sealing surface 1 and the last sealing surface 2 and through hole 6 are all by moving plate 4, the no bore portion of half moving plate 3 covers, and closes closed procedure and changes the sealing stage automatically over to.In the sealing stage, the rotation of moving plate 4 will make the helicoid slide relative of the helicoid and half moving plate 3 of moving plate 4, and the sealing surface of half moving plate 3 will vertically be pressed to sealing surface 2, realize sealing.
During unlatching: in the DecryptDecryption envelope stage, because gas pressure and metallic spring distortion, half moving plate 3 is bigger with the surface friction drag of lower sealing surface 1, the helicoid slide relative of the helicoid of moving plate 4 and half moving plate 3.When the helicoid slide relative of the helicoid of moving plate 4 and half moving plate 3 puts in place, the limited structural limitations of relative position of moving plate 4 and half moving plate 3, opening process changes over to automatically and changes the valve resistance stage.Changing the valve resistance stage, rotatablely moving of moving plate 4 will drive 3 slips of half moving plate and through hole 5 and through hole 6 on lower sealing surface 1 and the last sealing surface 2 be alignd with through hole 7, the through hole 8 of moving plate 4 and half moving plate 3, and valve is all opened, and half moving plate 3 is limited once more simultaneously.
Limit structure can adopt multiple mode to form, and these belong to the routine techniques of mechanical field.But for simplified structure, excircle that can half moving plate 3 is provided with spacing block set 13, the Seal cage inwall is provided with and the suitable spacing rib 14 of spacing block set 13 shapes and position, and the perpendicular end surface of the helicoid on spacing block set 13, spacing rib 14 and half moving plate 3 and the moving plate 4 constitutes limit structure jointly.
Linear for the aperture and the corner that make its through hole, described through hole 5,6 and through hole 7,8 are fan shaped borehole.
Above-mentioned actuating unit can adopt multiple structure, gear transmission structure etc. for example, but, can adopt operating stem 9 to connect moving plates 4 for simplified structure.Half moving plate, 3 skies are enclosed within on the operating stem 9, and moving plate 4 is fixedlyed connected with operating stem 9 shaft sealings.
For the ease of making, can assemble behind the said structure split production, can well satisfy requirement on machining accuracy like this, can also reduce manufacture cost.For example, will go up sealing surface 1 and be arranged on the press table 10, lower sealing surface 2 is arranged on the top board 11, and press table 10, support ring 12 and top board 11 orders are stacked and connect as one with valve body, and the position of support ring 12 inner hollow is a Seal cage.
On the basis of above structure, the structural type that adopts a plurality of Seal cages to contact vertically and arrange can be provided with sealing unit in each Seal cage.Like this, by pressing plate at interval, two end faces of this pressing plate all are sealing surface and last sealing surface 1 and the lower sealing surface 2 that is respectively two adjacent seals unit between the adjacent seals unit.Like this, a plurality of sealing unit levels are linked up, thereby can produce Super high pressure valve.
Embodiment 1: as Fig. 2,4～shown in Figure 11, valve of the present invention comprises the valve body that is provided with Seal cage, and press table 10, support ring 12 and top board 11 orders are stacked and connect as one with valve body, and the position of support ring 12 inner hollow forms Seal cage.To go up sealing surface 1 and be arranged on the press table 10, lower sealing surface 2 is arranged on the top board 11, and the import and the outlet that connect the circulation passage of Seal cage are separately positioned on the lower sealing surface 1 and last sealing surface 2 of press table 10 and top board 11.Coaxial order stack is equipped with and half moving plate 3 of lower sealing surface 1 and last sealing surface 2 positioned opposite and the sealing unit of moving plate 4 formation in the Seal cage, stacked surface of contact is equally distributed three sections helicoids along the circumferential direction between half moving plate 3 and the moving plate 4, half moving plate, 3 skies are enclosed within on the operating stem 9, and moving plate 4 is sealedly and fixedly connected with operating stem 9.On lower sealing surface 1 and last sealing surface 2, offer fan-shaped through hole 5 and the through hole 6 that along the circumferential direction distributes, through hole 5 and through hole 6 communication seals chamber and circulation passages, be provided with and through hole 5 between the adjacent helicoid on half moving plate 3 and the moving plate 4, the through hole 7 of through hole 6 radial position correspondences, through hole 8, the excircle of half moving plate 3 is provided with spacing block set 13, the inwall of support ring 12 is provided with and the suitable spacing rib 14 of spacing block set 13 shapes and position, spacing block set 13, the end face of the helicoid on spacing rib 14 and half moving plate 3 and the moving plate 4 constitutes limit structure jointly.On half moving plate 3 that contacts with last sealing surface 2 with lower sealing surface 1 and the sealing surface of moving plate 4, be provided with groove 15 and groove 16 around through hole 5 and through hole 6.
Embodiment 2: as Fig. 3～shown in Figure 11, valve of the present invention comprises the valve body that is provided with Seal cage, and press table 10, support ring 12 and top board 11 orders are stacked and connect as one with valve body, and the position of support ring 12 inner hollow forms Seal cage.To go up sealing surface 1 and be arranged on the press table 10, lower sealing surface 2 is arranged on the top board 11, and the import and the outlet that connect the circulation passage of Seal cage are separately positioned on the lower sealing surface 1 and last sealing surface 2 of press table 10 and top board 11.Coaxial order stack is equipped with and two and half moving plates 3 of lower sealing surface 1 and last sealing surface 2 positioned opposite and the sealing unit of moving plate 4 formation in the Seal cage, two and half moving plates 3 are stacked in the two ends of moving plate 4, stacked surface of contact is equally distributed three sections helicoids along the circumferential direction between half moving plate 3 and the moving plate 4, half moving plate, 3 skies are enclosed within on the operating stem 9, and moving plate 4 is sealedly and fixedly connected with operating stem 9.On lower sealing surface 1 and last sealing surface 2, offer fan-shaped through hole 5 and the through hole 6 that along the circumferential direction distributes, through hole 5 and through hole 6 communication seals chamber and circulation passages, adjacent spiral on half moving plate 3 and the moving plate 4 and between be provided with the through hole 7,8 corresponding with through hole 5,6 radial positions, the excircle of half moving plate 3 is provided with spacing block set 13, the inwall of support ring 12 is provided with and the suitable spacing rib 14 of spacing block set 13 shapes and position, and the end face of the helicoid on spacing block set 13, spacing rib 14 and half moving plate 3 and the moving plate 4 constitutes limit structure jointly.On the sealing surface of two and half moving plates 3 that contact with last sealing surface 2 with lower sealing surface 1, be provided with groove 15 and groove 16 around through hole 5 and through hole 6.
Claims (11)
1, valve, comprise the valve body that is provided with Seal cage, the import of the circulation passage of connection Seal cage and lower sealing surface (1) and the last sealing surface (2) that the outlet port is respectively arranged with positioned opposite, it is characterized in that: support is also coaxial superimposed in the Seal cage has and at least one half moving plate (3) of lower sealing surface (1) and last sealing surface (2) positioned opposite and the sealing unit of a moving plate (4) formation, the two ends of sealing unit are sealing surface, on lower sealing surface (1) and last sealing surface (2) and half moving plate (3) and moving plate (4), offer the axial through hole (5 that along the circumferential direction distributes, 6,7,8), moving plate is connected with actuating unit on (4), and the limit structure that half moving plate (3) and moving plate (4) pass through makes through hole (5,6,7,8) be communicated with circulation passage; When half moving plate (3) and moving plate (4) when relatively rotating, the slide relative of stacked surface of contact produces half moving plate (3) and moving plate (4) to move to axial between half moving plate (3) and the moving plate (4).
2, valve as claimed in claim 1 is characterized in that: stacked surface of contact is the helicoid that along the circumferential direction distributes between half moving plate (3) and the moving plate (4).
3, valve as claimed in claim 2 is characterized in that: at least two sections helicoids along the circumferential direction distribute.
4, valve as claimed in claim 2, it is characterized in that: the excircle of half moving plate (3) is provided with spacing block set (13), the Seal cage inwall is provided with and the suitable spacing rib (14) of spacing block set (13) shape and position, and the end face of the helicoid on spacing block set (13), spacing rib (14) and half moving plate (3) and the moving plate (4) constitutes limit structure jointly.
5, valve as claimed in claim 2, it is characterized in that: the two ends of moving plate (4) are coaxial superimposed respectively half moving plate (3), stacked surface of contact is along the circumferential direction to distribute and the opposite helicoid of rotation direction between two and half moving plates (3) and the moving plate (4), and the exterior edge face of two and half moving plates (3) is a sealing surface.
6, valve as claimed in claim 1 is characterized in that: half moving plate (3) that contacts with last sealing surface (2) with lower sealing surface (1) is or/and the exterior edge face of moving plate (4) is provided with the groove (15,16) around through hole (7,8).
7, valve as claimed in claim 1 is characterized in that: lower sealing surface (1) and last sealing surface (2) are provided with the groove around through hole (5,6).
8, valve as claimed in claim 1 is characterized in that: surface of contact stacked between half moving plate (3) and the moving plate (4) is mutual adaptive concaveconvex structure.
9, valve as claimed in claim 1 is characterized in that: actuating unit comprises operating stem (9), and half moving plate (3) sky is enclosed within on the operating stem (9), and moving plate (4) is fixedlyed connected with operating stem (9) shaft sealing.
10, according to any described valve of claim in 1～9, it is characterized in that: comprise order press table (10), support ring (12) and top board (11) stacked and that connect as one with valve body, last sealing surface (1) is arranged on the press table (10), lower sealing surface (2) is arranged on the top board (11), and the position of support ring (12) inner hollow is a Seal cage.
11, valve as claimed in claim 10 is characterized in that: a plurality of Seal cages layout of contacting vertically is provided with sealing unit in each Seal cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610020678 CN1834513A (en) | 2006-04-10 | 2006-04-10 | Valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610020678 CN1834513A (en) | 2006-04-10 | 2006-04-10 | Valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1834513A true CN1834513A (en) | 2006-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610020678 Pending CN1834513A (en) | 2006-04-10 | 2006-04-10 | Valve |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867741A (en) * | 2014-03-31 | 2014-06-18 | 江苏苏盐阀门机械有限公司 | Double disc capable of being unfolded through hinge shift |
| CN105485368A (en) * | 2016-01-29 | 2016-04-13 | 朱志斌 | Resistance-free plug valve |
| CN106627881A (en) * | 2017-02-24 | 2017-05-10 | 浙江春风动力股份有限公司 | Windshield bracket |
| CN113549544A (en) * | 2021-07-21 | 2021-10-26 | 广州海洋地质调查局 | Device and method for regularly enriching and culturing in-situ microorganisms in submarine methane leakage area |
| CN113719623A (en) * | 2021-09-15 | 2021-11-30 | 中国航空发动机研究院 | Valve for annular channel of aircraft engine |
| CN114193273A (en) * | 2021-06-24 | 2022-03-18 | 福建福清核电有限公司 | Device and method for improving grinding efficiency of valve sealing surface |
-
2006
- 2006-04-10 CN CN 200610020678 patent/CN1834513A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867741A (en) * | 2014-03-31 | 2014-06-18 | 江苏苏盐阀门机械有限公司 | Double disc capable of being unfolded through hinge shift |
| CN105485368A (en) * | 2016-01-29 | 2016-04-13 | 朱志斌 | Resistance-free plug valve |
| CN105485368B (en) * | 2016-01-29 | 2018-05-25 | 朱志斌 | Non-resistance plug valve |
| CN106627881A (en) * | 2017-02-24 | 2017-05-10 | 浙江春风动力股份有限公司 | Windshield bracket |
| CN114193273A (en) * | 2021-06-24 | 2022-03-18 | 福建福清核电有限公司 | Device and method for improving grinding efficiency of valve sealing surface |
| CN113549544A (en) * | 2021-07-21 | 2021-10-26 | 广州海洋地质调查局 | Device and method for regularly enriching and culturing in-situ microorganisms in submarine methane leakage area |
| CN113549544B (en) * | 2021-07-21 | 2022-06-17 | 广州海洋地质调查局 | Device and method for regularly enriching and culturing in-situ microorganisms in submarine methane leakage area |
| CN113719623A (en) * | 2021-09-15 | 2021-11-30 | 中国航空发动机研究院 | Valve for annular channel of aircraft engine |
| CN113719623B (en) * | 2021-09-15 | 2023-09-22 | 中国航空发动机研究院 | Valve for annular channel of aero-engine |
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