CN203189820U - Balance pressure adjustor and balance valve plug assembly - Google Patents
Balance pressure adjustor and balance valve plug assembly Download PDFInfo
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- CN203189820U CN203189820U CN2012205248141U CN201220524814U CN203189820U CN 203189820 U CN203189820 U CN 203189820U CN 2012205248141 U CN2012205248141 U CN 2012205248141U CN 201220524814 U CN201220524814 U CN 201220524814U CN 203189820 U CN203189820 U CN 203189820U
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- valve plug
- aligning
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
- G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
- G05D16/0675—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting on the obturator through a lever
- G05D16/0694—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting on the obturator through a lever using a spring-loaded membrane with a spring-loaded slideable obturator
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Lift Valve (AREA)
Abstract
A balance pressure adjustor comprises a valve body which is provided with a fluid inlet and a fluid outlet that are connected through a fluid passage. A valve seat is configured in the fluid passage. A self-aligned valve plug is at least partially configured in the fluid passage. The self-aligned valve plug and the valve seat interact for selectively opening or closing the fluid passage. A holder is partially configured in the hole of the self-aligned valve plug, and the self-aligned valve plug is operably connected with a valve rod with a spherical part. More particularly, the holder comprises a recess part which is suitable for accommodating the spherical part of the valve rod, so that the self-aligned valve plug automatically rotates around the spherical part of the valve rod, thereby realizing alignment and sealed joint between the valve disc of the self-aligned valve plug and the valve seat.
Description
Technical field
The utility model relates to a kind of balance pressure regulator, more specifically, relates to a kind of self-aligning valve plug for the balance pressure regulator.
Background technique
The pressure modulating valve is used in the downstream pressure that is used for the control fluid in panoramic industry and the dwelling house application.For example, in chemical processing plant (CPP) or oil refinery, the pressure modulating valve is used to manage mobile fluid with increase or the minimizing of compensation on demand, perhaps compensates other load distribution, and therefore keeps the fluid pressure controlled.Similarly, the pressure modulating valve can be used in the fluid pressure in order to keep being scheduled in the fixing device of pipework, and this predetermined fluid pressure automatically is adjusted to the variable that needs, such as the anti-scald valve in shower or water tap.By control downstream pressure, the variation of pressure modulating valve compensation downstream demand.For example, when the increase in demand of downstream, the pressure modulating valve is opened in order to allowing the more fluid pressure modulating valve of flowing through, thus the downstream pressure that keeps relative stability.On the other hand, when the downstream demand reduced, the pressure modulating valve cut out in order to reduce the flow through amount of pressure modulating valve of fluid, the downstream pressure that keeps relative stability again.
The pressure modulating valve can be categorized as the strong modulating valve of equilibrium pressure or non-equilibrium pressure modulating valve.Non-equilibrium valve typically has the inlet fluid of high pressure and has the low tension outlet fluid at the opposite side of valve plug in a side of valve plug.The undesirable influence of the entrance characteristic that non-equilibrium valve is decayed as is well known.The entrance characteristic of decay is a kind of such phenomenon, that is, non-equilibrium valve is in the phenomenon of the unexpected increase of downstream pressure experience when the minimizing of upstream pressure.Because most of pressure modulating valve are attempted the downstream pressure that keeps stable, so this influence is undesirable.The entrance characteristic of decay causes that by the on high-tension side fluid force that acts on valve plug this fluid force attempts valve plug is moved to operating position.As a result of, this valve must have some mechanisms in order to the fluid force of antagonism on this valve plug.Typically has setting value because resist hydrokinetic this structure, although so act on fluid force on the inlet side of valve plug may be change (for example, because the supply of inlet fluid reduces, perhaps because the upstream pressure change of valve) however the power that is produced by this mechanism but is constant.The entrance characteristic of decay is particular importance for the limited compressed fluid source that has such as cylinder, tube trailer or pumping conduit (hydrils), because in this application, have fixing inlet fluid supply, so inlet fluid pressure reduces when the inlet fluid supply reduces.
Non-equilibrium valve also stands to occur in the damage on the valve seat.In having the non-equilibrium valve of high entrance pressure, the fluid pressure that acts on the big valve port can make the valve seat distortion.As a result of, non-equilibrium valve is also nonideal for the application in High Voltage, big aperture.
In order to handle the entrance characteristic of decay in higher flow applications, the balance pressure regulator is developed.In the pressure regulator of balance, the pressure of part upstream then be used on the downstream part of using valve plug.Therefore, valve plug is " balance ", and it has on the upstream portion and downstream part that same fluid pressure acts on valve plug.By this way, be identical because act on fluid force on the valve plug surface in valve seat upstream and valve seat downstream, that trend towards valve plug is pressed to operating position, so eliminate the entrance characteristic that (has perhaps significantly reduced) decay.In other words, owing to the reason of fluid pressure, valve plug self has produced very little or has not produced opened/closed power.
In the diaphragm type pressure regulator, thereby can be discharged to the opposite side equilibrium valve power beyond the Great Wall of this barrier film by valve plug from the fluid of the more High Voltage of the upstream of valve plug or inlet side, be similar to above-mentioned balance regulator.Typically, this hydrokinetic balance is by comprising that discharge conduit or exhaust port that one or more actuator side from this inlet side to barrier film extends through valve plug realize.
Typical diaphragm type (balance) pressure modulating valve has been shown among Fig. 1.More specifically, Fig. 1 shows the throttle valve 10 of a routine, and it comprises actuator 12 and balance pressure modulating valve 14.This modulating valve 14 define for for example receive from the entrance 16 of the gas of gas distributing system and be used for gas be sent to for example have one or more equipment use the outlet 18 of equipment such as the terminal of factory, restaurant, apartment building etc.In addition, modulating valve 14 comprises and is arranged in entrance 16 and exports valve seat 22 between 18.Thereby gas must pass valve seat 22 at the entrance 16 of modulating valve 14 and process between exporting 18.
Actuator 12 is couple to modulating valve 14 with the pressure at outlet 18 places that guarantee modulating valve 14, that is, back pressure, it is consistent with the outlet of wishing or control pressure.Therefore, actuator 12 is communicated with by valve nozzle 34 and actuator mouth 20 fluids with modulating valve 14.Actuator 12 comprises for the control unit 22 of regulating the back pressure of modulating valve 14 based on the back pressure of sensing.Particularly, control unit 22 control arm 26 of valve plug 28 that comprises barrier film 24, piston 32 and have band valve disc 31.Thereby the back pressure of barrier film 24 induction modulating valve 14 also provides response to make modulating valve 14 open or close with mobile this valve plug 28.Control unit 22 comprises that also the control spring 30 that engages with the top side of control unit 22 is in order to offset the back pressure by barrier film 24 inductions.Correspondingly, the selection of back pressure by control spring 30 that can also refer to control the hope of pressure is set.
Therefore barrier film 24 operationally is couple to control arm 26, and is couple to this valve plug 28 by piston 32, and based on the unlatching of the back pressure regulating and controlling valve 14 of induction.For example, when the equipment of terminal user operation such as smelting furnace, for example, cause the demand on the gas distributing system of this equipment to the downstream of throttle valve 10, thereby reduced back pressure.Correspondingly, the back pressure of this reduction of barrier film 24 inductions.This allows control spring 30 to open and the right side that makes piston 32 and control arm 26 moves down with respect to the orientation of Fig. 1.Thereby this displacement of control arm 26 makes valve plug 28 move away from valve seat 22 opens modulating valve 14, has therefore increased rate of discharge with the demand that satisfies the increase that comes from equipment and has made the back pressure increase get back to control pressure.So after the configuration, this equipment can also suck gas by the outlet 18 of modulating valve 14 by valve seat 22.
Referring now to Fig. 2,, it shows the sectional view of amplification of the balance adjustment valve 14 of Fig. 1.In this example, this balance adjustment valve 14 also comprises the body 19 with passage 21, and this passage 21 is connected fluid input 16 with fluid output 18 fluid ground.This passage 21 comprises the throat 23 that valve seat 22 is arranged within it.Loading spring 25 is connected on the valve rod 27, and this valve rod 27 is operably connected to valve plug 28.As explained above, the valve disc 131 of this valve plug 28 interacts to control from entrance 16 to outlet 18 fluid flows through valve body 19 with valve plug 22.In addition, valve plug 28 comprises valve disc 31 is contained in peripheral recess 29 in it that it typically is rubber.The valve disc 31 of this valve plug 28 contacts to be implemented in aligning and the sealing engagement between valve plug 28 and the valve seat 22 with valve seat 22.
A problem of the balance pressure regulator of all balance regulators 14 as shown in Figure 1 is that the valve disc 31 of valve plug 28 and the sealing of the contact between the valve seat 22 are subjected to orientation between valve disc 31 and the valve seat 22 and the influence of manufacturing tolerances.This orientation and manufacturing tolerances make the amount that needs to form the pressure that seals increase usually, and this has increased blockade (lockup).For example, as shown in Figure 3A, because normal component tolerance and assembling method, for example, the valve disc 31 of valve plug 28 is usually with the close valve seat 22 of nonparallel mode.When this non-parallel mode took place, the valve disc 31 of valve plug 28 and the sealing between the valve seat 22 only were created on the side of valve seat 22, for example, and the left side shown in Fig. 3 B.The opposite side of valve seat 22, for example the right side is still not sealed.Shown in Fig. 3 C, when the complete sealing of final realization, originally a side that contacts the valve disc 131 of valve seat 22 has darker recessed, and this causes than the higher blockade of the blockade of hope or than the higher back pressure of the back pressure of wishing and cause the more regulator of poor efficiency.
The model utility content
Thereby have the darker recessed technical problem that causes higher outlet pressure in order to solve a side that when finally realizing complete sealing, originally contacts the valve disc of valve seat, proposed the utility model.
The utility model discloses a kind of balance pressure regulator, comprising: valve body, it has fluid input and the fluid output that is connected by the fluid passage; Valve seat, it is arranged in the described fluid passage; The self-aligning valve plug, it is arranged in the described fluid passage at least in part, and described self-aligning valve plug comprises that the described valve seat of Kong Bingyu interacts optionally open or closes said fluid channel; Retainer, it partly is arranged in the described hole of described self-aligning valve plug and with described self-aligning valve plug and is operably connected on the valve rod with bulb, and described retainer has the recess be used to the bulb that holds described valve rod; And balance channel, it is connected described fluid passage with chamber fluid ground; Wherein, described self-aligning valve plug automatically rotates around the bulb of described valve rod realizing between the valve disc of described self-aligning valve plug and described valve seat and aims at and sealing engagement.
Particularly, partly be arranged in described retainer in the described self-aligning valve plug around the described bulb rotation of described valve rod between the valve disc of described self-aligning valve plug and described valve seat, realizing aiming at and sealing engagement, thereby reduce to realize blocking required power.
Particularly, described self-aligning valve plug comprises the peripheral recess that is suitable for holding described valve disc.
Particularly, described self-aligning valve plug is with respect to direction rotation clockwise or counterclockwise of the vertical axis of the longitudinal axis of described valve rod and aiming at and sealing engagement up to realizing between described valve disc and described valve seat along the axial direction of the length of the longitudinal axis of described valve rod is mobile.
Particularly, in case contact with the part of described valve seat, described self-aligning valve plug automatically moves to the second place from primary importance, at described primary importance place, the longitudinal axis of described self-aligning valve plug and the longitudinal axis of described valve seat and not parallel or with the angled layout of the longitudinal axis of described valve seat, at described second place place, the longitudinal axis of described self-aligning valve plug or aligning parallel with the longitudinal axis of described valve seat.
Particularly, described self-aligning valve plug is move up to realize aligning and sealing engagement between described valve disc and described valve seat relative to direction rotation clockwise or counterclockwise of the longitudinal axis of described valve rod and at the axial direction along the length of the longitudinal axis of described valve rod.
Particularly, described retainer comprises base portion and is connected to the cylinder body of described base portion by fastening piece, and described cylinder body comprises from the flange that radially extends with the end of the described cylinder body of described base portion positioned opposite.
More specifically, described cylinder body comprises that top surface and described flange comprise madial wall, thereby the top surface of described cylinder body and described madial wall form the described recess in the bulb that is suitable for holding described valve rod described valve rod is operably connected with described self-aligning valve plug.
More specifically, form spherical joint and connect between the bulb of described valve rod and described recess, described recess forms containing seat to hold the bulb of described valve rod.
More specifically, the bulb of described valve rod is connected to form described spherical joint with at least one EDGE CONTACT of the top surface of the cylinder body of described retainer, thereby allows the longitudinal axis of described self-aligning valve plug to aim at the longitudinal axis of described valve seat.
The invention also discloses a kind of equilibrium valve plug assembly for the balance pressure regulator, described equilibrium valve plug assembly comprises: sleeve; The self-aligning valve plug, it is arranged in the described sleeve, and described self-aligning valve plug comprises balance raceway groove and hole; And retainer, it partly is arranged in the described hole of described self-aligning valve plug and is used for described self-aligning valve plug is operably connected to the valve rod with bulb, and described retainer has the recess be used to the described bulb that holds described valve rod; Wherein, when the valve disc of described self-aligning valve plug contacts with the part of described valve seat, described self-aligning valve plug and be arranged in it retainer around with the longitudinal axis of the perpendicular axis of the longitudinal axis of described valve rod or described valve rod in one or more automatically the rotation up between described valve disc and described valve seat, aiming at and sealing engagement.
Particularly, described self-aligning valve plug with respect to the longitudinal axis of described valve rod or with the perpendicular axis of the longitudinal axis of described valve rod in one or more clockwise or a direction rotation counterclockwise up between the valve disc of described self-aligning valve plug and described valve seat, aiming at and sealing engagement.
Particularly, in case contact with the part of described valve seat, the described valve disc of described self-aligning valve plug automatically moves to the second place from primary importance, the longitudinal axis of described primary importance and described valve seat is not parallel, and the described second place is parallel with the longitudinal axis of described valve seat and take place to aim between the valve disc of described valve seat and described self-aligning valve plug and sealing engagement.
Particularly, described self-aligning valve plug is with respect to direction rotation clockwise or counterclockwise of the longitudinal axis of described valve rod and mobile up to realizing aiming at and sealing engagement between the valve disc of described self-aligning valve plug and described seat ring along the axial direction of the length of the longitudinal axis of described valve rod.
Particularly, described retainer comprises base portion and is connected to the cylinder body of described base portion by fastening piece, and described cylinder body comprises from the flange that radially extends with the end of the cylinder body of described base portion positioned opposite.
More specifically, described cylinder body comprises that top surface and described flange comprise madial wall, and the described top surface of described cylinder body and described madial wall form the recess in the described bulb that is suitable for holding described valve rod so that described valve rod is operably connected with described self-aligning valve plug.
More specifically, form spherical joint and connect between the described bulb of described valve rod and described recess, described recess forms containing seat to hold the described bulb of described valve rod.
More specifically, the described bulb of described valve rod is connected to form described spherical joint with at least one EDGE CONTACT of the described top surface of the described cylinder body of described retainer, thereby allows the longitudinal axis of described self-aligning valve plug to aim at the longitudinal axis of described valve seat.
Particularly, described self-aligning valve plug comprises the peripheral recess that is suitable for holding valve disc.
Particularly, be furnished with the gap between the described flange of the described cylinder body of described retainer and the described self-aligning valve plug, and biasing member is arranged in the described gap.
According to first exemplary aspect, the balance pressure regulator comprises valve body, valve seat and self-aligning valve plug, and wherein, valve body has fluid input and the fluid output that is connected by the fluid passage, valve seat is arranged in the fluid passage, and the self-aligning valve plug is arranged in the fluid passage at least in part.The self-aligning valve plug comprises that the Kong Bingyu valve seat interacts optionally to open or to close the fluid passage.Retainer partly is arranged in the hole of self-aligning valve plug and operationally the self-aligning valve plug is connected on the valve rod with bulb, and this retainer has the recess be used to the bulb that holds this valve rod.The balance pressure regulator also comprises the barrier film that chamber and fluid passage are separated and the balance channel that the fluid passage is connected with chamber fluid.This self-aligning valve plug automatically rotates to realize valve disc and the aligning between the valve seat and the sealing engagement of self-aligning valve plug around the bulb of valve rod.
According to second exemplary aspect, the retainer in the hole that the equilibrium valve plug assembly that is used for the balance pressure regulator comprises sleeve, is arranged in self-aligning valve plug in the sleeve and that comprise balance raceway groove and hole and partly is arranged in this self-aligning valve plug.This retainer operationally is connected to this self-aligning valve plug on the valve rod and comprises the recess in the bulb that is suitable for holding valve rod.When the part of valve seat contacts with the valve disc of self-aligning valve plug, this self-aligning valve plug and partly arrange within it retainer around with the longitudinal axis of the perpendicular axis of the longitudinal axis of described valve rod or valve rod in one or more automatically the rotation up between valve disc and valve seat, aiming at and sealing engagement.
According to the 3rd exemplary aspect, the method of the valve plug that a kind of automatic adjusting is used with fluid regulating device, this fluid regulating device comprises entrance, outlet, be arranged in the valve seat between this entrance and this outlet, this valve plug is suitable for respect to the valve seat displacement, the fluid of controlling thus between the entrance and exit that is arranged in the modulating valve flows, this method comprises this retainer partly is arranged in the hole of valve plug, be connected to valve plug on the valve rod with flexible portion by retainer, this retainer has the recess be used to the flexible portion that holds valve rod, and around the flexible portion of valve rod automatically control valve plug to realize valve disc and the aligning between the valve seat and the sealing engagement of self-aligning valve plug.
Further, according to aforementioned first, any or many aspects in second and the 3rd aspect, balance pressure regulator and/or equilibrium valve plug assembly and/or method can also comprise following preferred form any or a plurality of.
In some preferred forms, this retainer that partly is arranged in the self aligned valve plug rotates to realize the valve disc of this self-aligning valve plug and the aligning between the valve seat around the bulb of valve rod.In addition, the self-aligning valve plug can comprise the peripheral recess that is suitable for holding valve disc.This self-aligning valve plug can also with respect to the longitudinal axis of this valve rod or with the vertical axis of the longitudinal axis of valve rod in one or more clockwise or a direction rotation the aiming at and sealing engagement between the valve disc of realizing this self-aligning valve plug and valve seat counterclockwise.Further, in case contact with the part of valve seat, this self-aligning valve plug can automatically move to the second place from primary importance, at the primary importance place, the longitudinal axis of this valve plug and the longitudinal axis of this valve seat are also not parallel or arrange at a certain angle with the longitudinal axis of this valve seat, at second place place, the longitudinal axis of this valve plug is parallel with the longitudinal axis of valve seat or align with the longitudinal axis of valve seat.This retainer can comprise base portion and be connected to the cylinder body of base portion by fastening piece, and this cylinder body can comprise the flange that radially extend the end of the cylinder body of arranging from relative base portion.Further, this cylinder body can comprise that top surface and this flange comprise madial wall, thereby operationally this valve rod is connected with this self-aligning valve plug so that the top surface of this cylinder body and madial wall form the recess in the bulb that is suitable for holding valve rod.Can also form spherical joint between the bulb of valve rod and recess and connect, this recess forms containing seat to hold the bulb of valve rod.In another kind of example, the bulb of this valve rod is connected to form spherical joint with at least one EDGE CONTACT of the top surface of the cylinder body of retainer, and this allows the longitudinal axis of self-aligning valve plug to aim at the longitudinal axis of valve seat.
In other preferred forms, between the flange of the cylinder body of retainer and self-aligning valve plug, arrange at interval, and biasing member is arranged in this interval.
In the preferable methods form, the self regulating valve plug can comprise that the flexible portion around valve rod rotates this retainer to realize valve disc and the aligning between the valve seat and the sealing engagement of valve plug, and this has reduced to realizing blocking required power.In another example, the automatic regulating valve plug can comprise with respect to the perpendicular axis of the longitudinal axis of valve rod clockwise or a direction rotation valve plug counterclockwise and make this valve plug mobile valve plug aiming at and sealing engagement between the valve disc of realizing valve plug and valve seat on the axial direction of the length of the longitudinal axis of valve rod.Yet, in another example, the automatic regulating valve plug can comprise in a single day contacting with the part of valve seat makes valve plug automatically move to the second place from primary importance, at the primary importance place, the longitudinal axis of this valve plug and the longitudinal axis of valve seat are also not parallel or arrange at a certain angle with the longitudinal axis of valve seat, at second place place, the longitudinal axis of this valve plug is parallel with the longitudinal axis of valve seat or aim at the longitudinal axis of valve seat.
In other preferable methods forms, retainer partly is arranged in comprises in the hole of this valve plug and partly be arranged in the end in hole of this valve plug and the retainer base portion be arranged in the other end in the hole relative with the end having from the cylinder body of its flange that radially extends, wherein, this cylinder body partly is arranged in the hole.In addition, this retainer partly is arranged in also comprises in the hole of this valve plug the retainer base portion is connected on the cylinder body by fastening piece.
In addition, the flexible portion of this valve rod can comprise the bulb, and this method can also be included in and form spherical joint between the recess of the bulb of this valve rod and this retainer and connect, and this recess forms containing seat to hold the bulb of this valve rod.Further, in case this method can comprise contacts with the part of valve seat then simultaneously around the bulb of valve rod or around longitudinal axis rotation valve plug and the retainer of valve rod.
The utility model provide when approach with the part of the valve seat of modulating valve and or in case when initially contacting with the part of the valve seat of modulating valve for making the self-aligning valve plug can self-regulating favourable device.This advantageously offsets and/or prevents from blocking the increase of pressure, and efficient and validity are increased.
Description of drawings
Fig. 1 is the lateral cross-sectional view of throttle valve with routine of balance pressure regulator;
Fig. 2 is the lateral cross-sectional view of amplification of the balance pressure regulator of Fig. 1;
Fig. 3 A-3C is the valve plug of balance regulator of prior art of Fig. 1 and the schematic representation of valve seat, wherein Fig. 3 A shows the primary importance when valve plug valve plug during near valve seat, Fig. 3 B shows the second place when valve plug valve plug during further near valve seat, thereby and Fig. 3 C show the 3rd position of valve plug when valve plug contacts the aligning realized between valve plug and the valve seat and sealing engagement with valve seat;
Fig. 4 is the sectional view according to the balance pressure regulator of the training centre conception of the present utility model that can use with the actuator of Fig. 1;
Fig. 5 is the sectional view according to the amplification of the self-aligning valve plug of the balance pressure regulator of Fig. 4 of training centre conception of the present utility model; And
Fig. 6 is in case the sectional view that the part of the valve plug of the balance pressure regulator of Fig. 5 is further amplified when initially contacting with the part of the valve seat of the strong modulating valve of equilibrium pressure.
Although the utility model is easy to implement with various modification and alternative structure, its some illustrative embodiments has been illustrated in the accompanying drawings and will describe in detail below.Yet, should be appreciated that purpose and do not lie in the utility model is restricted to disclosed concrete form, on the contrary, its purpose but be to cover all distortion and alternative structure and drop into equivalent structure in the spirit and scope of the present utility model.
Embodiment
Referring now to Fig. 4-Fig. 5,, the balance pressure regulator is referred to by the reference character 114 of Fig. 4 basically.Wherein, the balance pressure regulator of Fig. 4 and Fig. 5 comprises that these elements will similarly be numbered corresponding to the element of the balance pressure regulator of Fig. 1-Fig. 2, and unique difference is that the reference character of Fig. 4-Fig. 5 increases from 100.For example, the corresponding element of Fig. 4 and Fig. 5 will be to be numbered than Fig. 1-corresponding element big 100 shown in Figure 2.
Forward Fig. 4 now to, the strong modulating valve 114 of equilibrium pressure comprises fluid input 116 and fluid output 118 and the body 119 with passage 121 that this fluid input 116 is connected with these fluid output 118 fluid ground.This passage 121 comprises the throat 123 that valve seat 122 is arranged within it.Loading spring 125 is connected on the valve rod 127, and this valve rod 127 is operably connected on the self-aligning valve plug 128.This self-aligning valve plug 128 and valve seat 122 interacts in order to control entrance 116 and to export fluid flow between 118.More specifically, this self-aligning valve plug 128 comprises the peripheral recess 129 that rubber valve disc 131 is arranged within it.Be explained in more detail as following, the valve disc 131 contact valve seats 122 of this self-aligning valve plug 128 are in order to realize aligning and the sealing engagement between self-aligning valve plug 128 and the valve seat 122.
Equilibrium valve plug assembly 160 comprises sleeve 135, self-aligning valve plug 128 and retainer 139.This sleeve 135 has the hollow hole that helps to keep and guide this self-aligning valve plug 128 when self-aligning valve plug 128 when to-and-fro motion is flowed with the control fluid in valve body 119.This sleeve 135 can have angled surperficial outer surface 135a with the assembling of the gap in the increase valve body 119 and/or increase pressure regulator 114.
As shown in Figure 4, the longitudinal axis C that the longitudinal axis D of self-aligning valve plug 128 is parallel to valve seat 122 arranges, and has sealing engagement completely between the valve disc 131 of self-aligning valve plug 128 and valve seat.
Referring now to Fig. 5,, it shows the enlarged portion of the equilibrium valve plug assembly 160 of Fig. 4.Thereby design this equilibrium valve plug assembly 160 self-aligning valve plug 128 so that it be self aligned or can automatically regulate or mobile at self-aligning valve plug 128 valve disc 131 and valve seat 122 between realize aiming at and sealing engagement.In the operating process of modulating valve 114, this self-aligning valve plug 128 has for example reduced the recessed of valve disc 131.As a result of, in the long-term using process of regulator 100, for example neededly hold constant and improved regulator performance in order to trying hard to keep of the back pressure (lockup) that reaches hope.
In order to do like this, usually, this self-aligning valve plug 128 so is configured to make it to be operably connected on the valve rod 127 so that the bulb 127a of valve rod 127 is arranged in the recess of retainer 139 by retainer 139, forms spherical joint basically between valve rod 127 and retainer 139.In the operation period of valve, thereby this self-aligning valve plug 128 and retainer 139 of partly being arranged in it can be realized suitable aligning and sealing engagement around the bulb of valve rod 127 127a rotation between the valve disc 131 of self-aligning valve plug 128 and valve seat 122.In other words, when the valve disc 131 contact valve seats 122 of self-aligning valve plug 128 a part of, thereby this self-aligning valve plug 128 and retainer 139 arrive aiming at and sealing engagement of the position of the longitudinal axis C that is parallel to valve seat 122 (Fig. 4) and appearance and valve seat 122 around the bulb 127a rotation of valve rod 127.
Particularly, retainer 139 comprises the cylindrical shape part 153 that has from its flange that radially extends 155, so that cylindrical shape part 153 and flange 155 can form the maintenance nut in one embodiment.The cylindrical shape part 153 of retainer 139 is arranged in the hole 154 of self-aligning valve plug 128.Flange 155 comprises the last shoulder surface 155a that is adjacent to barrier film housing 156.Flange 155 also comprises the following shoulder surface 155b of a part that is adjacent to barrier film 133, and the part of this barrier film 133 is arranged between the following shoulder surface 155b of the last shoulder surface 128a of self-aligning valve plug 128 and flange.Retainer base portion 151 is arranged in this cylindrical shape part 153 and is arranged in the end in relative hole, wherein end.This retainer base portion 151 helps to remain on self-aligning valve plug 128 in the throat 123 and for example prevent that self-aligning valve plug 128 is in undesirable axial displacement in sleeve 135 outsides.Fastening piece 139a with center hole is connected to retainer base portion 151 on the cylinder body 153 of retainer 139, and this center hole is used for receiving entrance pressure in the operating process of valve 114.This cylinder body 153 comprises top surface 157, and this flange 155 comprises madial wall 159, so that form recess 161 between the madial wall 159 of the top surface 157 of cylinder body 153 and flange 155.
As Fig. 5 further shown in, this valve rod 127 comprises bulb 127a, this bulb 127a adapts in the recess 161 between the madial wall 159 of the top surface 157 that is formed on cylinder body 153 and flange 155.In fact, form spherojoint and connect between the bulb of valve rod 127 127a and recess 161, it forms containing seat in fact in order to hold bulb 127a.More specifically, at least one EDGE CONTACT of the top surface 157 of this bulb 127a and cylinder body 155 and operationally be fixed to retainer 139, this allow in case when contacting valve seat 122 a part of self-aligning valve plug 128 and retainer 139 around bulb 127a rotation or around the longitudinal axis B rotation of valve rod 127.This self-aligning valve plug 128 with arrange that partly within it retainer 139 will rotate up to them and arrive the position parallel with the longitudinal axis C of valve seat 122 that this can realize aligning and sealing engagement, simultaneously, has reduced and has arrived the recessed of valve disc 131.In other words, the bulb 127a of valve rod 127 allows when valve disc 131 contact valve seats 122 a part of retainer 139 and self-aligning valve plug 128 self-aligning automatically or self-regulation or movement and/or rotation or pivots up to realize aligning and sealing engagement between whole valve disc 131 and valve seat 122.Therefore, this movement of self-aligning valve plug 128 reduces the required power in order to realize blockade and produces more efficient regulator 114.
More specifically, in case 127 longitudinal axis B is in the axial direction the time towards valve seat 122 along valve rod for the initial movement of valve rod 127 and bulb 127a, this valve disc 131 mostly just contacts the part of valve seat 122.In other words, when self-aligning valve plug 128 during near valve seat 122, the longitudinal axis D of self-aligning valve plug 128 can and be not parallel to the longitudinal axis C of valve seat 122, and the result only part of valve seat 122 initially contacts valve disc 131.Be provided to by the valve disc 131 of self-aligning valve plug 128 that retainer 139 that starting force on the only part of valve seat 122 makes self-aligning valve plug 128 and be connected to the there is regulated or around one or more longitudinal axis B rotations of valve rod 127 and/or around the axis R rotation perpendicular to the longitudinal axis B of valve rod 127.In Fig. 5, axis R can refer to the clinoid of valve rod 127.Although in Fig. 5, clinoid R directly extends in the paper, yet this clinoid in fact is defined as any axis perpendicular to the longitudinal axis B extension of valve rod 127.This rotation of self-aligning valve plug 128 and retainer 139 takes place up to realizing aiming at and sealing engagement between the valve disc 131 of self-aligning valve plug 128 and valve seat 122.
In another way, and as shown in Figure 6, when valve disc 131 contacts the only part of valve seats 122, for example, right side part, this self-aligning valve plug 128 and retainer 139 around clinoid R clockwise direction rotation so that the left side of the valve disc 131 of self-aligning valve plug 128 towards the left side movement of valve seat 122 up to aiming at completely with valve seat 122 and during the sealing engagement generation.In the same way, when valve disc 131 contacts only another part of valve seats 122, for example, left part, this self-aligning valve plug 128 and retainer 139 are counterclockwise rotated around clinoid so that move towards the right side of valve seat 122 up to taking place to aim at completely and sealing engagement with valve seat 122 on the right side of the valve disc 131 of self-aligning valve plug 127.In two kinds of embodiments, after the only part of valve disc 131 contact valve seats 122, the longitudinal axis D of self-aligning valve plug 128 moves to the second place from primary importance, wherein, the longitudinal axis C of this primary importance and valve seat 122 is also not parallel or be arranged to angle [alpha] with the longitudinal axis C of valve seat 122, and this second place is parallel with the longitudinal axis C of valve seat 122 or aim at the longitudinal axis C of valve seat 122.This automatic movement or rotation have reduced to the recessed amount of valve disc 131 and the required power in order to realize blocking.
Fig. 6 for example also shows the gap 162 that forms between the flange 155 of cylinder body 153 and self-aligning valve plug 128.As Fig. 6 further shown in, biasing member 164 can be arranged in this gap and to be used for auxiliary self-aligning valve plug 128 and retainer 139 and to move pivotally around the bulb 127a of valve rod 127.Although the biasing member of Fig. 6 164 for example can comprise one or more O shape rings, yet, thereby one of ordinary skill in the art will appreciate that except O shape ring or paired O shape ring various other biasing member such as wavy spring, compression disc spring or for example other biasing mechanism can optionally be used the function that realizes that generally an O shape ring (or a plurality of O shape is encircled) and biasing member 164 are same.
Self-aligning valve plug 128 of the present utility model is described to have partly arranges the retainer 139 that self-aligning valve plug 128 is connected on the valve rod 127 with bulb 127a within it and operationally, do not describe clearly although be here, yet this valve rod 127 can optionally comprise flexible portion, in case contact with the part of valve seat, then this flexible portion similarly allows valve plug and retainer to rotate simultaneously around flexible portion (the perhaps longitudinal axis of this valve rod).As mentioned above, the included scope of this patent is not limited to only have the valve rod in bulb, but also comprises other variations in the bulb of realizing said function.
According to aforementioned content, be to be understood that the utility model provide when approach with the part of the valve seat 122 of modulating valve 114 and or in case when initially contacting with the part of the valve seat 122 of modulating valve 114 for making the self-aligning valve plug 128 can self-regulating favourable device.This advantageously offsets and/or prevents from blocking the increase of pressure, and efficient and validity are increased.Yet modulating valve 114 described here just comprises a kind of embodiment of the fluid control device of the utility model principle.Other fluid control devices that comprise other regulators and control valve also can be benefited from structure of the present utility model and/or advantage.More at large, although some exemplary apparatus and method describe at this, yet the included scope of this patent is not limited to this.On the contrary, this patent comprises that no matter all still fall into method, device and manufacturing article in the scope of appended claim fully at the meaning of word under the equalization opinion.
Claims (20)
1. a balance pressure regulator is characterized in that, described balance pressure regulator comprises:
Valve body, it has fluid input and the fluid output that is connected by the fluid passage;
Valve seat, it is arranged in the described fluid passage;
The self-aligning valve plug, it is arranged in the described fluid passage at least in part, and described self-aligning valve plug comprises that the described valve seat of Kong Bingyu interacts optionally open or closes said fluid channel;
Retainer, it partly is arranged in the described hole of described self-aligning valve plug and with described self-aligning valve plug and is operably connected on the valve rod with bulb, and described retainer has the recess be used to the bulb that holds described valve rod; And
Balance channel, it is connected described fluid passage with chamber fluid ground;
Wherein, described self-aligning valve plug automatically rotates around the bulb of described valve rod realizing between the valve disc of described self-aligning valve plug and described valve seat and aims at and sealing engagement.
2. balance pressure regulator according to claim 1, it is characterized in that, partly be arranged in described retainer in the described self-aligning valve plug around the described bulb rotation of described valve rod between the valve disc of described self-aligning valve plug and described valve seat, realizing aiming at and sealing engagement, thereby reduce to realize blocking required power.
3. balance pressure regulator according to claim 1 is characterized in that, described self-aligning valve plug comprises the peripheral recess that is suitable for holding described valve disc.
4. balance pressure regulator according to claim 1, it is characterized in that described self-aligning valve plug is with respect to direction rotation clockwise or counterclockwise of the vertical axis of the longitudinal axis of described valve rod and aiming at and sealing engagement up to realizing along the axial direction of the length of the longitudinal axis of described valve rod is mobile between described valve disc and described valve seat.
5. balance pressure regulator according to claim 1, it is characterized in that, in case contact with the part of described valve seat, described self-aligning valve plug automatically moves to the second place from primary importance, at described primary importance place, the longitudinal axis of described self-aligning valve plug and the longitudinal axis of described valve seat and not parallel or with the angled layout of the longitudinal axis of described valve seat, at described second place place, the longitudinal axis of described self-aligning valve plug parallel with the longitudinal axis of described valve seat or the aligning.
6. balance pressure regulator according to claim 1, it is characterized in that described self-aligning valve plug is move up to realize aligning and sealing engagement between described valve disc and described valve seat relative to direction rotation clockwise or counterclockwise of the longitudinal axis of described valve rod and at the axial direction along the length of the longitudinal axis of described valve rod.
7. balance pressure regulator according to claim 1, it is characterized in that, described retainer comprises base portion and is connected to the cylinder body of described base portion by fastening piece, and described cylinder body comprises from the flange that radially extends with the end of the described cylinder body of described base portion positioned opposite.
8. balance pressure regulator according to claim 7, it is characterized in that, described cylinder body comprises that top surface and described flange comprise madial wall, thereby the top surface of described cylinder body and described madial wall form the described recess in the bulb that is suitable for holding described valve rod described valve rod is operably connected with described self-aligning valve plug.
9. balance pressure regulator according to claim 8 is characterized in that, forms spherical joint and connect between the bulb of described valve rod and described recess, and described recess forms containing seat to hold the bulb of described valve rod.
10. balance pressure regulator according to claim 9, it is characterized in that, the bulb of described valve rod is connected to form described spherical joint with at least one EDGE CONTACT of the top surface of the cylinder body of described retainer, thereby allows the longitudinal axis of described self-aligning valve plug to aim at the longitudinal axis of described valve seat.
11. an equilibrium valve plug assembly that is used for the balance pressure regulator is characterized in that described equilibrium valve plug assembly comprises:
Sleeve;
The self-aligning valve plug, it is arranged in the described sleeve, and described self-aligning valve plug comprises balance raceway groove and hole; And
Retainer, it partly is arranged in the described hole of described self-aligning valve plug and is used for described self-aligning valve plug is operably connected to the valve rod with bulb, and described retainer has the recess be used to the described bulb that holds described valve rod;
Wherein, when the valve disc of described self-aligning valve plug contacts with the part of described valve seat, described self-aligning valve plug and be arranged in it retainer around with the longitudinal axis of the perpendicular axis of the longitudinal axis of described valve rod or described valve rod in one or more automatically the rotation up between described valve disc and described valve seat, aiming at and sealing engagement.
12. equilibrium valve plug assembly according to claim 11, it is characterized in that, described self-aligning valve plug with respect to the longitudinal axis of described valve rod or with the perpendicular axis of the longitudinal axis of described valve rod in one or more clockwise or a direction rotation counterclockwise up between the valve disc of described self-aligning valve plug and described valve seat, aiming at and sealing engagement.
13. equilibrium valve plug assembly according to claim 11, it is characterized in that, in case contact with the part of described valve seat, the described valve disc of described self-aligning valve plug automatically moves to the second place from primary importance, the longitudinal axis of described primary importance and described valve seat is not parallel, and the described second place is parallel with the longitudinal axis of described valve seat and take place to aim between the valve disc of described valve seat and described self-aligning valve plug and sealing engagement.
14. equilibrium valve plug assembly according to claim 11, it is characterized in that described self-aligning valve plug is with respect to direction rotation clockwise or counterclockwise of the longitudinal axis of described valve rod and mobile up to realizing aiming at and sealing engagement along the axial direction of the length of the longitudinal axis of described valve rod between the valve disc of described self-aligning valve plug and described seat ring.
15. equilibrium valve plug assembly according to claim 11, it is characterized in that, described retainer comprises base portion and is connected to the cylinder body of described base portion by fastening piece, and described cylinder body comprises from the flange that radially extends with the end of the cylinder body of described base portion positioned opposite.
16. equilibrium valve plug assembly according to claim 15, it is characterized in that, described cylinder body comprises that top surface and described flange comprise madial wall, and the described top surface of described cylinder body and described madial wall form the recess in the described bulb that is suitable for holding described valve rod so that described valve rod is operably connected with described self-aligning valve plug.
17. equilibrium valve plug assembly according to claim 16 is characterized in that, forms spherical joint and connect between the described bulb of described valve rod and described recess, described recess forms containing seat to hold the described bulb of described valve rod.
18. equilibrium valve plug assembly according to claim 17, it is characterized in that, the described bulb of described valve rod is connected to form described spherical joint with at least one EDGE CONTACT of the described top surface of the described cylinder body of described retainer, thereby allows the longitudinal axis of described self-aligning valve plug to aim at the longitudinal axis of described valve seat.
19. equilibrium valve plug assembly according to claim 11 is characterized in that, described self-aligning valve plug comprises the peripheral recess that is suitable for holding valve disc.
20. equilibrium valve plug assembly according to claim 15 is characterized in that, be furnished with the gap between the described flange of the described cylinder body of described retainer and the described self-aligning valve plug, and biasing member is arranged in the described gap.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205248141U CN203189820U (en) | 2012-09-28 | 2012-09-28 | Balance pressure adjustor and balance valve plug assembly |
| US14/038,404 US9200716B2 (en) | 2012-09-28 | 2013-09-26 | Self aligning valve plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205248141U CN203189820U (en) | 2012-09-28 | 2012-09-28 | Balance pressure adjustor and balance valve plug assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189820U true CN203189820U (en) | 2013-09-11 |
Family
ID=49106680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205248141U Expired - Lifetime CN203189820U (en) | 2012-09-28 | 2012-09-28 | Balance pressure adjustor and balance valve plug assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189820U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711964A (en) * | 2012-09-28 | 2014-04-09 | 艾默生过程管理调节技术公司 | Self aligning valve plug |
| CN104864140A (en) * | 2014-02-20 | 2015-08-26 | 艾默生过程管理调节技术公司 | Balancing adjustor provided with balancing valve internal part comprising variable pressure induction area |
| WO2015126634A1 (en) * | 2014-02-20 | 2015-08-27 | Emerson Process Management Regulator Technologies, Inc. | Balanced regulator having a balanced trim including a variable pressure sense area |
-
2012
- 2012-09-28 CN CN2012205248141U patent/CN203189820U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711964A (en) * | 2012-09-28 | 2014-04-09 | 艾默生过程管理调节技术公司 | Self aligning valve plug |
| CN104864140A (en) * | 2014-02-20 | 2015-08-26 | 艾默生过程管理调节技术公司 | Balancing adjustor provided with balancing valve internal part comprising variable pressure induction area |
| WO2015126634A1 (en) * | 2014-02-20 | 2015-08-27 | Emerson Process Management Regulator Technologies, Inc. | Balanced regulator having a balanced trim including a variable pressure sense area |
| US9678516B2 (en) | 2014-02-20 | 2017-06-13 | Emerson Process Management Regulator Technologies, Inc. | Balanced regulator having a balanced trim including a variable pressure sense area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130911 |