CN103775701A - Pressure regulating valve - Google Patents

Pressure regulating valve Download PDF

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Publication number
CN103775701A
CN103775701A CN201410074489.7A CN201410074489A CN103775701A CN 103775701 A CN103775701 A CN 103775701A CN 201410074489 A CN201410074489 A CN 201410074489A CN 103775701 A CN103775701 A CN 103775701A
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CN
China
Prior art keywords
piston
pressure regulator
regulator valve
valve body
valve
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Pending
Application number
CN201410074489.7A
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Chinese (zh)
Inventor
刘永光
杨晓伟
王一轩
高晓辉
甘家建
刘文磊
程楠楠
孙健
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Beihang University
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Beihang University
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Publication date
Application filed by Beihang University filed Critical Beihang University
Priority to CN201410074489.7A priority Critical patent/CN103775701A/en
Publication of CN103775701A publication Critical patent/CN103775701A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

The invention provides a pressure regulating valve which comprises a valve body, a fluid flow channel, a cylindrical flow guide screen sleeve, a piston and a piston driving mechanism, wherein the cylindrical flow guide screen sleeve is arranged in the fluid flow channel. A plurality of through holes are formed in a through-flow portion of the flow guide screen sleeve and axially extend along the flow guide screen sleeve, fluid flowing from an inlet of the pressure regulating valve flows to a downstream side through the through holes and flows out of the valve body through an outlet of the pressure regulating valve, the piston driving mechanism is used for driving the piston to axially move along the valve body, the piston can axially move along the flow guide screen sleeve, so that the piston is jointed with the inner wall of the flow guide screen sleeve, the piston axially moves along the valve body under the driving action of the piston driving mechanism, the jointed position of the piston and the inner wall of the flow guide screen sleeve is controlled, the area of the through holes for flowing of the fluid in the flow guide screen sleeve is controlled, and pressure is regulated. On the premise of wide pressure regulating range, the pressure regulating valve is small in size, simple in structure and high in accuracy, and the influence of the driving mechanism on flow of the pressure regulating valve is minimized.

Description

Pressure regulator valve
Technical field
The present invention relates to the pressure regulator valve for gas supply system, this pressure regulator valve comprises the piston for adjust flux, and the present invention relates to a kind of piston drive mechanism for this pressure regulator valve especially.
Background technique
In gas supply system, pressure regulator valve is for entering low-voltage customer after the mesohigh pipe mesh pressure adjust of pipeline gas.For example, the pressure of pipeline gas official website is generally middle pressure (0.2-0.4MPa), high pressure (2.5-4MPa) or sub-high pressure (0.8-1.6Mpa) conventionally.For the pressure regulator valve adopting in pipeline gas pipe network, expect that the through-current capability of pressure regulator valve is large, range of regulation is wide, and then can make gas transmission main line pipe network expand air feed scope, reduce the Quantity of city voltage regulating station, increase economic efficiency.
At present, the pressure regulator valve that pipeline network of fuel gas in city construction adopts is mostly butterfly valve, and its pressure feedback adopts diaphragm structure (elastomer diaphragm or metal diaphragm).As shown in Figure 6 and Figure 7, Fig. 6 and Fig. 7 be the figure of pressure regulator valve opening and closing state respectively for the conventional structure of pressure regulator valve.As shown in Figure 6, combustion gas flows into along the combustion gas stream of pressure regulator valve by damming mouthfuls 104, then from exporting 105 outflows from entrance 101.In the time carrying out pressure regulation, be with movable valve plug 103 to move by valve rod 102, and then change the size of the mouth 104 that dams; By dam mouthfuls 104 aperture of adjusting, and then realize the adjusting to combustion gas stream pressure.Because entrance 101 and outlet 105 arrange along x10-x10 axle, and spool 103 and valve rod 102 arrange along y10-y10 axle, the combustion gas that enters modulating valve needs first to flow along x10-x10, then turn to 90 degree moving along y10-y10 axial flow, turn to again 90 degree at 104 o'clock by the mouth that dams again, then flow out along outlet stream.
In the combustion gas stream of modulating valve, there are two sections of 90 ° of turnovers in combustion gas, and the feature of such structure own makes this class pressure regulator valve have the shortcomings such as the narrow and through-current capability of range of regulation is little.In addition, due to butterfly valve adopt be crevice throttle voltage-regulation principle, on the one hand, exit gas pressure is subject to inlet gas pressure influence of fluctuations large, pressure regulation low precision on the other hand, inevitably brings larger noise, generally all needs to join baffler.
Summary of the invention
the problem that invention will solve
In view of the above problems, the object of this invention is to provide a kind of pressure regulator valve, it can guarantee that under the large prerequisite of range of regulation the size of pressure regulator valve is little, simple in structure, pressure regulation precision is high and driving mechanism is minimized the impact of pressure regulator valve flow.
for the scheme of dealing with problems
According to an aspect of the present invention, the invention provides a kind of pressure regulator valve, it has valve body, essence along the axial fluid flowing path passage of valve body and is arranged in the water conservancy diversion screen jacket of the tubular in fluid flowing path passage, the flow passage component of water conservancy diversion screen jacket is provided with the axially extended multiple through holes along water conservancy diversion screen jacket, the fluid flowing into from the entrance of pressure regulator valve flows to downstream side via described through hole, then flows out valve body via the outlet of pressure regulator valve; Described pressure regulator valve also comprises piston and the axially movable piston drive mechanism along valve body for driven plunger, described piston can moving axially along water conservancy diversion screen jacket, to engage with the internal face of water conservancy diversion screen jacket, by the driving effect of piston drive mechanism, so that piston moving axially along valve body, and then the internal face engagement positio of control piston and water conservancy diversion screen jacket, thereby the area of the through hole flowing through for fluid in control water conservancy diversion screen jacket is realized pressure regulation effect thus.
According to above-mentioned structure of the present invention, due to the above-mentioned structure of pressure regulator valve, due to valve body, fluid flowing path passage be arranged in the water conservancy diversion screen jacket of the tubular in fluid flowing path passage, the flow passage component of water conservancy diversion screen jacket is provided with the axially extended multiple through holes along water conservancy diversion screen jacket, therefore, easily driven plunger edge is circumferentially mobile can to utilize piston drive mechanism, can increase substantially pressure regulator valve flow and make range of regulation large.In addition, owing to water conservancy diversion screen jacket being set and by the internal face engagement positio of control piston and water conservancy diversion screen jacket, and then control the gross area of the through hole flowing through for fluid in water conservancy diversion screen jacket, realize thus pressure regulation effect.Therefore, pressure regulation precision is high, and noise is little, does not need additionally to arrange baffler.
According to preferred embodiment, piston is provided with piston rod integratedly or removably in the side away from pressure regulator valve import, piston rod extends axially along valve body, a contrary side with arranging piston of piston rod is provided with the groove extending vertically, in groove, be embedded with tooth bar, with can by with the rotation of tooth meshed gears vertically reciprocally piston rod move.
According to preferred embodiment, piston rod does not arrange groove, tooth bar with arranging integratedly with the side of piston rod of a contrary side of arranging piston.
According to preferred embodiment, described piston drive mechanism comprises motor and gear drive, the output shaft of motor is connected with gear, outputs power to and tooth bar meshed gears, thereby can move vertically by the rotating drive tooth bar of gear after the deceleration via gear drive.
According to preferred embodiment, pressure regulator valve also comprises cowling, cowling is near the entrance setting of described valve body and extending axially along valve body, the outer circumferential face of cowling and the internal face of valve body form a part for fluid flowing path passage, in the time that pressure regulator valve is opened completely, piston and piston rod are housed in cowling, cowling is provided with opening with valve body in the direction vertical with the arranged direction of cowling, the opening that the pto＝power take-off of gear drive connects respectively valve body and cowling inserts in cowling, only working in cowling with tooth bar meshed gears of gear drive.
According to preferred embodiment, the two ends of the pto＝power take-off of gear drive are separately installed with above-mentioned and tooth bar meshed gears and gearwheel coaxially, and gearwheel is by the output shaft coupling of one or more levels gear graduation and motor.
According to preferred embodiment, the periphery of the pto＝power take-off of gear drive is provided with supporting sleeve, between the madial wall of the periphery wall of supporting sleeve and the opening of valve body and the outer side wall of valve body, connecting in the mode of sealing, is what seal between the periphery wall of supporting sleeve and the madial wall of the opening of cowling.
According to preferred embodiment, described pressure regulator valve also comprises sensor and controller, described sensor comprises for detection of at least one entrance sensor of the pressure of the ingress of pressure regulator valve with for detection of at least one outlet sensor of the pressure in the outlet port of pressure regulator valve, the power output of the pressure difference control motor in the pressure of described controller based on ingress and outlet port, with by piston control in position.
Pressure regulator valve of the present invention can be guaranteed that under the large prerequisite of range of regulation the size of pressure regulator valve is little, pressure regulation precision is high and driving mechanism is minimized the impact of pressure regulator valve flow.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be described.Wherein:
Fig. 1 is in opening state structural representation according to the pressure regulator valve of an embodiment of the invention;
Fig. 2 is the pressure regulator valve overall structure schematic diagram according to an embodiment of the invention, and pressure regulator valve also comprises to be controlled and feedback loop, and wherein pressure regulator valve is in closed condition;
Fig. 3 is according to the structural representation of the through hole of the water conservancy diversion sieve part of the water conservancy diversion screen jacket of an embodiment of the invention;
Fig. 4 is the cowling profile schematic diagram according to an embodiment of the invention;
Fig. 5 is according to the schematic cross-section of the cowling of an embodiment of the invention;
Fig. 6 is the pressure regulator valve structural representation of prior art, and wherein pressure regulator valve is in opening state;
Fig. 7 is the pressure regulator valve structural representation of prior art, and wherein pressure regulator valve is in closed condition.
Embodiment
Below describe the specific embodiment of the present invention in detail in connection with accompanying drawing.The mode of execution that should be appreciated that explanation is below only exemplary, and non-limiting.
[structure of pressure regulator valve]
Fig. 1 and Fig. 2 schematically show the overall structure of pressure regulator valve according to the embodiment of the present invention, wherein, Fig. 1 illustrates the opening state of pressure regulator valve, under this state, pressure regulator valve plays pressure regulation effect, and for regulating the gaseous-pressure that flows through pressure regulator valve, Fig. 2 illustrates the closed condition of pressure regulator valve, under this state, pressure regulator valve cuts out and cuts off combustion gas stream.
As depicted in figs. 1 and 2, pressure regulator valve comprises: valve body, and it is made up of right valve barrel 1001 and the left valve barrel 1002 arranged along the axial X-X of pressure regulator valve; Cowling 1003, it is near right valve barrel 1,001 one side settings and be housed in the containing space being formed by right valve barrel 1001 and left valve barrel 1002; Piston 1004, it is connected with piston rod 1005 one; Water conservancy diversion screen jacket 1006, for flowing to the outlet 10020 of pressure regulator valve via water conservancy diversion screen jacket 1006 from gas; Piston rod driving mechanism 1007, it moves linearly for piston rod 1004 and then driven plunger 1003; With safety protection mechanism 108, it is for the protection of pressure regulator valve.
In mode of execution shown in the figure, right valve barrel 1001 and left valve barrel 1002 link together in the mode of sealing.In the mode of execution illustrating, both link together (as depicted in figs. 1 and 2) via bolt and by seal ring.It should be noted that in another embodiment right valve barrel 1001 and left valve barrel 1002 moulding (not shown) integratedly.
As shown in Figure 1, arrow logo goes out the flow path of combustion gas, and the upstream side of combustion gas is depicted as the right side of paper, the left side that the downstream side of combustion gas is paper.The upstream side of right valve barrel 1001 is provided with the fuel gas inlet 10010 as the entrance of pressure regulator valve, the downstream side opening of right valve barrel 1001, and the aperture of the opening of the aperture ratio fuel gas inlet of the opening 10020 of gas outlet one side is large.Left valve barrel 1002 comprises upstream side large-diameter portion, downstream side minor diameter part and the intermediate portion between large-diameter portion and minor diameter part, thereby the opening of intermediate portion reduces to form the transition part between large-diameter portion and minor diameter part from large-diameter portion towards minor diameter part.The end of downstream side (being minor diameter part) of left valve barrel 1002 is provided with outlet 10020, and this outlet is as the outlet of pressure regulator valve; The large-diameter portion of left valve barrel 1002 is connected with the downstream side opening end of right valve barrel 1001.Thus, right valve barrel 1001 and left valve barrel 1002 form containing space.Such structure contributes to guarantee large flow.
As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 5, the axial X-X along pressure regulator valve in this containing space is provided with cowling 1003.Cowling 1003 is suitable for the mobile smooth form of fluid near being shaped as of outer surface of the end of a side of right valve barrel 1001, and any step is not set, designs the shape of the end, upstream of cowling 1003 farthest not hinder the mobile mode of fluid as far as possible.Thus, can guarantee the flow velocity of pressure regulator valve.
In mode of execution shown in the figure, be cardinal principle taper in the profile of end cowling 1003 and the adjacent layout of end of downstream side right valve barrel 1001, increase gradually towards downstream side along axial (being path direction) of pressure regulator valve from the profile of upstream-side-end.Thus, along the axial X-X of pressure regulator valve, the large-diameter portion of the external frame of the end of the upstream side of cowling 1003 and right valve barrel 1001 forms and is applicable to the mobile stream of fluid.
The downstream side of cowling 1003 is column roughly, its downstream side opening and in be provided with containing space.The downstream side opening end of cowling 1003 is formed with column containing space along the axial X-X of pressure regulator valve.The top trip side position place along path direction of cowling 1003 is provided with opening 10031(and sees Fig. 4 and Fig. 5), this opening is for installing the piston rod driving mechanism 1007 for piston rod 1004.
The position of the roughly intermediate portion of the downstream side of cowling 1003 and left valve barrel 1002 is provided with water conservancy diversion screen jacket 1006.In the mode of execution illustrating, water conservancy diversion screen jacket 1006 is tubular structure roughly, and it comprises in the mounting cylinder portion 10061 at two end part and 10062 and water conservancy diversion sieve part 10063 between mounting cylinder portion 10061 and 10062.
Downstream side mounting cylinder portion 10061 is for being installed together with left valve barrel 1002, and mounting cylinder portion 10061 is connected in the mode of sealing with left valve barrel 1002.About the mode of sealing, in a preferred embodiment, between downstream side mounting cylinder portion 10061 and left valve barrel 1002, be provided with seal ring.In the mode of execution illustrating, see Fig. 1 and Fig. 2, downstream side mounting cylinder portion 10061 comprises lip part and axial joint, the periphery of lip part is provided with circular step, this circular step engages with the step of left valve barrel 1002, and axially joint links together by the flange of the fastening means such as bolt and left valve barrel 1002 in downstream side.Upstream side mounting cylinder portion 10062 is for being installed together with right valve barrel 1001.
In the mode of execution illustrating, upstream side mounting cylinder portion 10062 links together in the downstream of downstream side and cowling 1003, upstream side mounting cylinder portion 10062 links together at upstream side and supporting sleeve 10051, supporting sleeve 10051, for support piston bar 1005, also can be used as the accessory for butt spring 1008 parts such as grade simultaneously.By setting in advance the tension force of spring 1008, the pressure of valve outlet port can be set.In one embodiment, the present invention can realize 0-1.6MPa range of regulation, and in relevant work interval, outlet pressure can regulate arbitrarily, and peak rate of flow is greater than 15000Nm 3/ h, closing pressure is less than 1.1 times of outlet pressures.
Water conservancy diversion sieve part 10063 is between mounting cylinder portion 10061 and 10062 and substantially occupy most of region of the circulation path of the combustion gas stream of modulating valve.Water conservancy diversion sieve part 10063 is mainly used in guiding gas stream, and works in coordination with piston 1004 effects such as decompression, noise abatement of playing.
Below by the structure of explanation water conservancy diversion sieve part 10063.Water conservancy diversion sieve part 10063 is tubular roughly, is formed with multiple through holes 10064 in the cylindrical outside surfaces of water conservancy diversion sieve part 10063.Through hole 10064 roughly extends along the axial direction of water conservancy diversion sieve part 10063.
Fig. 3 illustrates the schematic unfolded drawing of water conservancy diversion sieve part 10063, for arrangement mode and the shape of through hole 10064 are described.Working method and the voltage-regulation principle of water conservancy diversion sieve part 10063 are described as follows.
In the time that pressure regulator valve is worked, water conservancy diversion sieve part 10063 is positioned at the passage portion of combustion gas stream, the combustion gas flowing into from the fuel gas inlet 10010 of pressure regulator valve, flow in the gas flow road direction downstream side forming along cowling 1003 and valve body, then flow to the gas outlet 10020 of valve body through the through hole 10064 of water conservancy diversion sieve part 10063.
Pressure regulator valve is in order to play pressure regulation or decompression, and by making piston 1004 mobile along axial (being X-X direction) of modulating valve, the periphery wall of piston 1004 engages with the inner circle wall of water conservancy diversion sieve part 10063.In the time that piston 1004 is mobile along axial (being X-X direction), piston 1004 changes with the bonding length of water conservancy diversion screen jacket 1006.Flow through the position of piston 1004 by control, can effectively control the area of the opening of crossing for gas flow, and then realize the object of pressure regulation or decompression.Piston 1004 is roughly inversely proportional to the gas flow flowing through with the bonding length of water conservancy diversion screen jacket 1006.
The water conservancy diversion sieve part 10063 of water conservancy diversion screen jacket 1006 preferably spreads all over whole water conservancy diversion sieve part 10063 ground multiple linear through holes 10064 for water conservancy diversion is set.In the time that through hole 10064 spreads all over area that whole water conservancy diversion sieve part 10063 arranged and made not arrange in water conservancy diversion sieve part 10063 through hole and must lack as far as possible, if there is fluctuation in the pressure of the dry network pipeline of pressure regulator valve, for example, when pressure is lower, because through hole 10064 spreads all over that whole diversion division 10063 arranges and water conservancy diversion sieve part 10063 in through hole is not set area must lack as far as possible, therefore, can effectively guarantee that the pressure of the combustion gas that flows to downstream user remains on certain level; On the other hand, if when pressure is excessive, can effectively reduce by mobile piston 10004 area of the through hole that flows through combustion gas, can effectively reduce pressure, prevent the overpressure of the combustion gas of downstream user.
When piston is positioned at the position of the downstream mounting cylinder portion 10061 of water conservancy diversion screen jacket 1006, when all through holes 10064 that are arranged at the water conservancy diversion sieve part 10063 of water conservancy diversion screen jacket 1006 are closed, the combustion gas stream of modulating valve is closed (as shown in Figure 2), and combustion gas can not be flow through modulating valve.On the other hand, when piston is positioned at the position of the downstream mounting cylinder portion 10061 of water conservancy diversion screen jacket 1006, when all through holes 10064 that are arranged at the water conservancy diversion sieve part 10063 of water conservancy diversion screen jacket 1006 are opened, the combustion gas stream of modulating valve is opened completely.
When high-pressure gas flows through through hole 10064, the engagement positio by control piston 1004 with water conservancy diversion screen jacket 1006, can realize the object that pressure regulation is reduced pressure.The shape of through hole 10064 and arrangement mode affect pressure regulation precision.Compared with the crevice throttle voltage-regulation principle of prior art, this voltage regulating mode can suppress noise effectively.
In a preferred embodiment, through hole 10064 is the elongated linear groove of multiple circumferential extensions along water conservancy diversion screen jacket 1006.The shape of through hole 10064 is not particularly limited.For example, on water conservancy diversion screen jacket 1006, be furnished with several elongated rectangle grooves.
In the mode of execution shown in Fig. 3, rectangular-shaped through hole is equidistantly uniformly distributed along the circumferential misalignment of water conservancy diversion screen jacket 1006 at flow passage component.The number of through hole is more, and the number of the through hole of layout has the circulation aperture of the combustion gas that can better distribute more, and decompression, noise reduction effect is good, and the good advantage of tuning linearity while controlling.
The hole shape that is arranged on water conservancy diversion screen jacket 1006 is not particularly limited, as long as can guarantee that piston can guarantee the linearity of the gas flow flowing through while moving axially along valve.For example, spacing between shape (width and length) and the Kong Yukong in hole is to obtain according to flow, rigidity and flow resistance optimization.The shape in hole is not limited to rectangle, can be also oval, move run-track shaped etc.
Water conservancy diversion screen jacket also comprises the valve port with triangular cutting edge 10065 at the inner peripheral surface place that is arranged on the first mounting cylinder portion, and piston also comprises the sealing gasket on the top that is arranged on piston, and the sword position of valve port is arranged with the sealing gasket on piston with aiming at.Thus, in the time that piston is closed, realize the secure seal of piston and valve port, prevent gas leakage.
[piston drive mechanism]
Below piston drive mechanism 1007 is described.
Piston drive mechanism is for making piston along the moving axially of valve body, the internal face engagement positio of control piston and water conservancy diversion screen jacket, thus control the area of the through hole that the confession fluid in water conservancy diversion screen jacket flows through, realize thus pressure regulation effect.
In the mode of execution shown in Fig. 2, piston 1004 is provided with piston rod 1005 integratedly in the side away from pressure regulator valve import, piston rod 1005 extends axially along valve body, a contrary side (i.e. right side in figure) with arranging piston of piston rod 1004 is provided with the groove extending vertically, is embedded with tooth bar in groove.Be inlaid in tooth bar in groove can by with the rotation of tooth meshed gears vertically reciprocally piston rod move.
For the ease of gear driving rack, the right-hand end of piston rod 1005 needn't be consistent with the size of left end, also there is no special restriction.For the convenience driving, the right-hand end of piston rod 1005 can be sized to be suitable for offering groove, so that engage with gear.The shape of groove is not particularly limited.From guaranteeing to drive the angle of effect and power transmission efficiency, the degree of depth of groove is preferably as the criterion with line of contact and the piston movement dead in line of tooth bar.
In unshowned another mode of execution, piston rod does not arrange groove, but at the attached tooth bar in the side of piston rod.Or tooth bar and piston rod form.Can reduce like this quantity of parts, also can realize the effect that driven plunger moves.
In the mode of execution shown in Fig. 2, cowling 1003 is provided with opening 10031 in the direction vertical with the arranged direction of cowling.The opening 10031 that the pto＝power take-off of gear drive connects respectively valve body and cowling inserts in cowling 1003.
Cowling 1003 entirety are generally along axial (being fuel gas flow direction) upper extension of valve body, the axial length of cowling 1003 is arranged to: in the time that pressure regulator valve is opened completely, be suitable for piston 1004 and piston rod 1005 to be substantially housed on the whole the inside away from pressure regulator valve inlet side of cowling 1003.A side away from pressure regulator valve outlet of the upstream side mounting cylinder portion 10062 of water conservancy diversion screen jacket 1006 is also provided with supporting sleeve 10051, for supporting piston bar 1005, can be used on the other hand arranging the parts such as spring on the one hand.Supporting sleeve 10051 is provided with through hole, and piston rod 1005 connects the setting of this through hole.Supporting sleeve 10051 is preferably located in the middle position near piston rod.
Rack and pinion driving mechanism on piston rod 1005 connects.Gear between the rack and pinion driving mechanism of piston rod is traditional rack and-pinion mechanism.Omit it is illustrated.
Gear drive comprises driver and speed change gear.In one embodiment, driver is motor 1009.For example, can be stepper motor, or also can be suitable for carrying out for other final controlling element of existing action.Gear drive is by the output shaft coupling of one or more levels gear graduation and motor.
In Fig. 2, gear shaft 10072 is arranged in supporting sleeve 10074 by coaxial bearing, and by spacer sleeve 10073 and bearing (ball) cover location.Preferably, between supporting sleeve 10074 and valve body 1002 and cowling 1003, be sealing.In one embodiment, in supporting sleeve 10074 and bearing (ball) cover, seal groove is set, rotating seal ring is set in seal groove.
In order to reduce the space occupied by gear driven mechanism, gear drive need to arrange with respect to the layout of cowling and valve body.Preferably, only small gear 10071 is housed in cowling, can make like this size of cowling little, and then makes the size of pressure regulator valve little.
In the mode of execution illustrating, with the gearwheel 10075 that small gear 10071 is connected by gear shaft 10072 one, gearwheel 10075 engages with the small gear 10076 being arranged on motor power output shaft.Multiple gears also can be set between gearwheel 10075 and small gear 10076 and carry out speed change.
As shown in Figure 2, pressure regulator valve is also provided with controller and sensor parts.Sensor comprises: at least one entrance sensor 10077, and it is for detection of the pressure of the ingress of pressure regulator valve; With at least one outlet sensor 10078, for detection of the pressure in the outlet port of pressure regulator valve.The power output of the pressure difference control motor in the pressure of controller based on ingress and outlet port, with by piston control in position.Although be exemplified as two sensors, the number of sensor is not particularly limited.Based on the requirement of control accuracy, multiple sensors can be set.
Preferably, pressure regulator valve is also provided with flow indication parts, to facilitate user to obtain flow information.
Based on the disclosure, the many variation in configuration and the sequence of operation of the feature illustrating and illustrate are obvious to those skilled in the art.Thereby, should have a taste of, in the case of the spirit and category that do not depart from claim theme, can make various changes to the disclosure.For example, the application is not only applicable to gas burning system, can also be used for other liquid or gas flow systems.

Claims (9)

1. a pressure regulator valve, it is characterized in that, it has valve body, essence along the axial arranged fluid flowing path passage of valve body and is arranged in the water conservancy diversion screen jacket of the tubular in fluid flowing path passage, the flow passage component of water conservancy diversion screen jacket is provided with the axially extended multiple through holes along water conservancy diversion screen jacket, the fluid flowing into from the entrance of pressure regulator valve flows to downstream side via described through hole, flow out valve body via the outlet of pressure regulator valve again
Described pressure regulator valve also comprises piston and the axially movable piston drive mechanism along valve body for driven plunger, described piston can moving axially along water conservancy diversion screen jacket, to engage with the internal face of water conservancy diversion screen jacket, by the driving effect of piston drive mechanism, so that piston moving axially along valve body, and then the internal face engagement positio of control piston and water conservancy diversion screen jacket, thereby the area of the through hole flowing through for fluid in control water conservancy diversion screen jacket is realized pressure regulation effect thus.
2. pressure regulator valve as claimed in claim 1, it is characterized in that, good and/or the through hole of the linearity of the shape of through hole is with linear arrangement, so that proper piston along valve body axially near or while moving away from the outlet side of valve body, the area of the through hole flowing through for fluid in water conservancy diversion screen jacket is linearly and changes.
3. pressure regulator valve as claimed in claim 1, it is characterized in that, piston is provided with piston rod integratedly or removably in the side away from pressure regulator valve import, piston rod extends axially along valve body, a contrary side with arranging piston of piston rod is provided with the groove extending vertically, in groove, be embedded with tooth bar, with can by with the rotation of tooth meshed gears vertically reciprocally piston rod move.
4. pressure regulator valve as claimed in claim 3, is characterized in that, piston rod does not arrange groove, tooth bar with arranging integratedly with the side of piston rod of a contrary side of arranging piston.
5. the pressure regulator valve as described in claim 3 or 4, it is characterized in that, described piston drive mechanism comprises motor and gear drive, the output shaft of motor is connected with gear, after deceleration via gear drive, output power to and tooth bar meshed gears, thereby can move vertically by the rotating drive tooth bar of gear.
6. pressure regulator valve as claimed in claim 5, it is characterized in that, pressure regulator valve also comprises cowling, cowling is near the entrance setting of described valve body and extending axially along valve body, the outer circumferential face of cowling and the internal face of valve body form a part for fluid flowing path passage, in the time that pressure regulator valve is opened completely, piston and piston rod are housed in cowling, cowling is provided with opening with valve body in the direction vertical with the arranged direction of cowling, the opening that the pto＝power take-off of gear drive connects respectively valve body and cowling inserts in cowling, only working in cowling with tooth bar meshed gears of gear drive.
7. pressure regulator valve as claimed in claim 6, it is characterized in that, the two ends of the pto＝power take-off of gear drive are separately installed with above-mentioned and tooth bar meshed gears and gearwheel coaxially, and gearwheel is by the output shaft coupling of one or more levels gear graduation and motor.
8. pressure regulator valve as claimed in claim 7, it is characterized in that, the periphery of the pto＝power take-off of gear drive is provided with supporting sleeve, between the madial wall of the periphery wall of supporting sleeve and the opening of valve body and the outer side wall of valve body, connecting in the mode of sealing, is what seal between the periphery wall of supporting sleeve and the madial wall of the opening of cowling.
9. the pressure regulator valve as described in any one in claim 1-4, it is characterized in that, described pressure regulator valve also comprises sensor and controller, described sensor comprises for detection of at least one entrance sensor of the pressure of the ingress of pressure regulator valve with for detection of at least one outlet sensor of the pressure in the outlet port of pressure regulator valve, the power output of the pressure difference control motor in the pressure of described controller based on ingress and outlet port, with by piston control in position.
CN201410074489.7A 2014-03-03 2014-03-03 Pressure regulating valve Pending CN103775701A (en)

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CN201410074489.7A CN103775701A (en) 2014-03-03 2014-03-03 Pressure regulating valve

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108167487A (en) * 2017-12-28 2018-06-15 北京航空航天大学 A kind of lock pressure adjustment structure applied to simulated environment cabin
CN109990127A (en) * 2019-05-13 2019-07-09 西安航天基地思普动力科技有限公司 A kind of the piston type electronic pressure regulating valve and its pressure regulation method of actuator driven
CN110778761A (en) * 2019-11-28 2020-02-11 宇通物联网技术(深圳)有限公司 Flow pressure control valve
CN111518597A (en) * 2020-05-06 2020-08-11 长沙宁湖机械设备有限公司 Be used for multistage accuse depressor of natural gas recovery
WO2021059014A1 (en) * 2019-09-25 2021-04-01 Fisher Jeon Gas Equipment (Chengdu) Co., Ltd. Modular valve system
CN113915402A (en) * 2021-10-29 2022-01-11 昆山莱恒洁净材料有限公司 Diaphragm seal valve
CN114719031A (en) * 2022-03-15 2022-07-08 方正阀门集团股份有限公司 Ultrahigh pressure self-operated axial flow block valve

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108167487A (en) * 2017-12-28 2018-06-15 北京航空航天大学 A kind of lock pressure adjustment structure applied to simulated environment cabin
CN108167487B (en) * 2017-12-28 2019-04-23 北京航空航天大学 A kind of lock pressure adjustment structure applied to simulated environment cabin
CN109990127A (en) * 2019-05-13 2019-07-09 西安航天基地思普动力科技有限公司 A kind of the piston type electronic pressure regulating valve and its pressure regulation method of actuator driven
WO2021059014A1 (en) * 2019-09-25 2021-04-01 Fisher Jeon Gas Equipment (Chengdu) Co., Ltd. Modular valve system
US11920688B2 (en) 2019-09-25 2024-03-05 Fisher Jeon Gas Equipment (Chengdu) Co., Ltd. Modular valve system
CN110778761A (en) * 2019-11-28 2020-02-11 宇通物联网技术(深圳)有限公司 Flow pressure control valve
CN111518597A (en) * 2020-05-06 2020-08-11 长沙宁湖机械设备有限公司 Be used for multistage accuse depressor of natural gas recovery
CN113915402A (en) * 2021-10-29 2022-01-11 昆山莱恒洁净材料有限公司 Diaphragm seal valve
CN113915402B (en) * 2021-10-29 2024-01-30 昆山莱恒洁净材料有限公司 Diaphragm sealing valve
CN114719031A (en) * 2022-03-15 2022-07-08 方正阀门集团股份有限公司 Ultrahigh pressure self-operated axial flow block valve
CN114719031B (en) * 2022-03-15 2023-11-07 方正阀门集团股份有限公司 Ultrahigh pressure self-operated axial flow cut-off valve

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Application publication date: 20140507