CN103775700A - Pressure regulating valve - Google Patents
Pressure regulating valve Download PDFInfo
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- CN103775700A CN103775700A CN201410074475.5A CN201410074475A CN103775700A CN 103775700 A CN103775700 A CN 103775700A CN 201410074475 A CN201410074475 A CN 201410074475A CN 103775700 A CN103775700 A CN 103775700A
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- piston
- pressure regulator
- regulator valve
- valve
- valve body
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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
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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
- 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
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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
- 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
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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
- 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
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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
- 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 is provided with a fluid flow channel approximately parallel to the axis of a valve body. The upstream portion of the fluid flow channel mainly comprises an inner wall face of the valve body and an outer wall face of a fairing. The pressure regulating valve comprises a piston, a piston driving mechanism and a safety protection mechanism, and the piston driving mechanism is used for driving the piston to axially move along the valve body. When the pressure regulating valve is in operation, the piston driving mechanism drives the piston to move between a first position and a second position. When the pressure regulating valve is not in operation, regardless of the fact the piston is at any position between the first position and the second position, the safety protection mechanism drives the piston to axially move along the valve body by the aid of the power of the safety protection mechanism, so that the piston moves to the second position. The pressure regulating valve can intelligently regulate pressure, and safety of the intelligent pressure regulating valve can be particularly ensured.
Description
Technical field
The present invention relates to the intelligent pressure regulating valve for gas supply system, the present invention relates to the design of the safety protection mechanism of intelligent pressure regulating 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 addition, more and more higher to the automatization level requirement of gas pressure regulating station, realizing left unguarded and remote centralized control is the development trend that following gas ductwork is built.Therefore,, in order to realize left unguarded and remote monitoring, the requirement of the pressure regulator valve to intelligent control is urgent especially.But, in the time that pressure regulator valve is worked, once there is power-off or other urgency, how to guarantee that the Security of pressure regulator valve exists very large potential safety hazard.In addition, in the time that the gaseous-pressure in combustion gas stream is excessive, how pressure regulator valve being carried out to overpressure protection is also a challenge for intelligent pressure regulating valve.
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 realize the intelligentized pressure regulation operation of pressure regulator valve, can guarantee especially the Security of intelligent pressure regulating valve.
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 the fluid flowing path passage with the axial almost parallel of valve body, the upstream portion of fluid flowing path passage is mainly made up of the internal face of valve body and the outer wall of cowling, the downstream of cowling is provided with the water conservancy diversion screen jacket of the tubular of the flow passage component that is located at fluid flowing path passage, the fluid flowing into from the entrance of pressure regulator valve flows along the upstream portion of fluid flowing path passage, move to outlet side via described water conservancy diversion screen jacket, flow out valve body via the outlet of pressure regulator valve again, described pressure regulator valve comprises piston and the axially movable piston drive mechanism along valve body for driven plunger, in the time that pressure regulator valve is worked, described piston drive mechanism driven plunger moves between primary importance and the second place, in the time that piston is positioned at primary importance, piston does not stop up the through hole in water conservancy diversion screen jacket, make the flow maximum of pressure regulator valve, in the time that piston is positioned at the second place, piston stops up the whole through holes in water conservancy diversion screen jacket, the flow that makes pressure regulator valve is zero, described pressure regulator valve also comprises safety protection mechanism, in the time that pressure regulator valve is not worked, the no matter any position of piston between primary importance and the second place, described safety protection mechanism relies on motivational drive piston the moving axially along valve body of self, so that piston is moved to the second place.
According to preferred embodiment, safety protection mechanism comprises tension spring, and described spring is arranged between piston and supporting sleeve with the tension force of being scheduled to, and supporting sleeve is mounted to water conservancy diversion screen jacket or cowling, and the piston rod of piston connects supporting sleeve setting.
According to preferred embodiment; piston drive mechanism comprises motor and the gear drive being connected with piston; the pto＝power take-off of motor is connected with the power intake of gear drive; described motor arrangement is in the outside of valve body; described safety protection mechanism also comprises pto＝power take-off for cutting off motor and the powerdriven overpressure protection parts of gear drive; in the time that the hydrodynamic pressure of pressure regulator valve outlet side exceedes predetermined secure threshold, overpressure protection parts cut off the pto＝power take-off of motor and the power transmission of gear drive.
According to preferred embodiment, overpressure protection parts are realized powerdriven cut-out by suction-operated.
According to preferred embodiment; overpressure protection parts comprise the magnet on the outer wall that is arranged on valve body; described motor is arranged in the periphery of valve body in the mode of sliding by supporting frame; the pto＝power take-off of motor is provided with small gear; in the time that pressure regulator valve is worked; small gear engages with the gearwheel in gear drive; in the time that the hydrodynamic pressure of pressure regulator valve outlet side exceedes predetermined secure threshold, magnet adsorption supporting frame along valve body move axially make small gear remove and engage with gearwheel in gear drive.
According to preferred embodiment, described magnet is fixedly mounted on valve body, between magnet and supporting frame, be provided with force application part, force application part is used for being supported with the supporting frame application of force of motor, in the time that pressure regulator valve is worked, make the gearwheel in small gear and gear drive remain on engagement by force application component.
According to preferred embodiment, described force application component is spring.
According to preferred embodiment, described pressure regulator valve also comprises piston position detection part, can carry out according to the signal of piston position detection part the motion of control piston for the controller of controlling electric machine rotation, if detect that piston is positioned at limit of sports record position, stops the rotation of motor.
Pressure regulator valve of the present invention can be realized the intelligentized pressure regulation operation of pressure regulator valve, can guarantee especially the Security of intelligent pressure regulating valve.
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.
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.
In one embodiment, form pressure closed loop intelligent control system by controller, motor, piston, transmission part and pressure transducer, the actual pressure value that controller records by continuous comparative pressure setting value and pressure transducer is carried out the piston movement in control valve body, realize intelligent pressure regulating, controller also can be estimated described pressure regulator valve flow by the pressure reduction of described pressure transducer and stepper motor accumulative total stroke; And showing screen display, also can realize remote monitoring.Such structure, is easy to realize left unguarded and/or remote centralized control.
[safety protection mechanism]
The following describes safety protection mechanism of the present invention.The aforementioned effect that is positioned at spring 1008 and plays safety protection mechanism.Having a power failure or meeting in emergency circumstances, spring 1008 plays a role.Spring 1008 is arranged between piston and supporting sleeve 10051, and is applied with in advance some tension.For example, in the situation that having a power failure, need closing pressure-regulating valve immediately.Spring 1008 utilizes the pretightening force of self to promote piston downstream and moves, and then closes the through hole of water conservancy diversion screen jacket, and then closing pressure-regulating valve.
In one embodiment, safety protection mechanism, except comprising spring 1008, also comprises overpressure protection parts.As shown in Figure 2; piston drive mechanism 1007 comprises motor 1009 and the gear drive being connected with piston; the pto＝power take-off of motor is connected with the power intake of gear drive; when the outlet pressure of pressure regulator valve excessive (exceeding predetermined safety pressure level), overpressure protection parts are for cutting off the power transmission of pto＝power take-off and gear drive of motor.
In one embodiment, overpressure protection parts cut off the pto＝power take-off of motor and the power transmission of gear drive.
In one embodiment, overpressure protection parts are realized powerdriven cut-out by suction-operated.Overpressure protection parts comprise the magnet 10091 on the outer wall that is arranged on valve body.Magnet is for example arranged on support, and support is fixed on valve body via conventional fastening means such as bolts.The outer circumferential side of valve body is provided with groove, and supporting frame 10092 is arranged in groove in the mode in axial sliding along valve body.On supporting frame 10092, be placed with motor 1009.As shown in Figure 2, supporting frame 10092 comprises support arm side-prominent from supporting frame, loads motor on support arm, and one end that the pto＝power take-off of motor connects support arm and pto＝power take-off is provided with small gear 10076.In the time that pressure regulator valve is worked, small gear 10076 engages with gearwheel 10075, so that power is passed on the tooth bar being arranged on piston rod after slowing down.
In the time that the hydrodynamic pressure of pressure regulator valve outlet side exceedes predetermined secure threshold, for example export sensor 10078 and detect when the pressure of pressure regulator valve outlet is excessive, magnet 10091 adsorb supporting frame 10092 along valve body move axially small gear 10076 is engaged with gearwheel releasing 10075., piston drive mechanism is not played a role.In this case, be subject to the spring-force driven dual closing pressure-regulating valve of emergency shutdown spring 1008.
Between magnet 10091 and supporting frame 10092, be provided with force application part.In one embodiment, force application part is spring, and force application part, for to being supported with supporting frame 10092 application of forces of motor, in the time that pressure regulator valve is worked, makes the gearwheel in small gear and gear drive remain on engagement by force application component.
In order further to strengthen Security, described pressure regulator valve also comprises piston position detection part, and controller can carry out according to the signal of piston position detection part the motion of control piston.If detect that piston is positioned at limit of sports record position, stops the rotation of motor.To prevent, in the time that pressure regulator valve cuts out completely or opens completely, motor still driven plunger continues mobile.In this case, be positioned at standard-sized sheet and full-shut position once piston position detection part detects piston, force motor is stopped operating, thereby guarantee pressure regulator valve Security under any circumstance.In a preferred embodiment, on the gear of gear transmission mechanism, be set with limit sensors.The type of limit sensors is not particularly limited, as long as can realize easily position probing.
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 the intelligent pressure regulating valve of gas burning system, can also be used for the intelligent pressure regulating valve of other liquid or gas flow systems.
Claims (8)
1. a pressure regulator valve, it is characterized in that, it has the fluid flowing path passage with the axial almost parallel of valve body, the upstream portion of fluid flowing path passage is mainly made up of the internal face of valve body and the outer wall of cowling, the downstream of cowling is provided with the water conservancy diversion screen jacket of the tubular of the flow passage component that is located at fluid flowing path passage, the fluid flowing into from the entrance of pressure regulator valve flows, moves to outlet side via described water conservancy diversion screen jacket along the upstream portion of fluid flowing path passage, flow out valve body via the outlet of pressure regulator valve again
Described pressure regulator valve comprises piston and the axially movable piston drive mechanism along valve body for driven plunger, in the time that pressure regulator valve is worked, described piston drive mechanism driven plunger moves between primary importance and the second place, in the time that piston is positioned at primary importance, piston does not stop up the through hole in water conservancy diversion screen jacket, makes the flow maximum of pressure regulator valve, in the time that piston is positioned at the second place, piston stops up the whole through holes in water conservancy diversion screen jacket, and the flow that makes pressure regulator valve is zero
Described pressure regulator valve also comprises safety protection mechanism; in the time that pressure regulator valve is not worked; the no matter any position of piston between primary importance and the second place, the motivational drive piston that described safety protection mechanism relies on self moves axially along valve body, so that piston is moved to the second place.
2. pressure regulator valve as claimed in claim 1; it is characterized in that, safety protection mechanism comprises tension spring, and described spring is arranged between piston and supporting sleeve with the tension force of being scheduled to; supporting sleeve is mounted to water conservancy diversion screen jacket or cowling, and the piston rod of piston connects supporting sleeve setting.
3. pressure regulator valve as claimed in claim 1; it is characterized in that; piston drive mechanism comprises motor and the gear drive being connected with piston; the pto＝power take-off of motor is connected with the power intake of gear drive; described motor is in the work of the outside of valve body; described safety protection mechanism also comprises pto＝power take-off for cutting off motor and the powerdriven overpressure protection parts of gear drive; in the time that the hydrodynamic pressure of pressure regulator valve outlet side exceedes predetermined secure threshold, overpressure protection parts cut off the pto＝power take-off of motor and the power transmission of gear drive.
4. pressure regulator valve as claimed in claim 3, is characterized in that, overpressure protection parts are realized powerdriven cut-out by suction-operated.
5. pressure regulator valve as claimed in claim 4; it is characterized in that; overpressure protection parts comprise the magnet on the outer wall that is arranged on valve body; described motor is arranged in the periphery of valve body in the mode of sliding by supporting frame; the pto＝power take-off of motor is provided with small gear; in the time that pressure regulator valve is worked; small gear engages with the gearwheel in gear drive; in the time that the hydrodynamic pressure of pressure regulator valve outlet side exceedes predetermined secure threshold, magnet adsorption supporting frame along valve body move axially make small gear remove and engage with gearwheel in gear drive.
6. pressure regulator valve as claimed in claim 5, it is characterized in that, described magnet is fixedly mounted on valve body, between magnet and supporting frame, be provided with force application part, force application part is used for being supported with the supporting frame application of force of motor, in the time that pressure regulator valve is worked, make the gearwheel in small gear and gear drive remain on engagement by force application component.
7. pressure regulator valve as claimed in claim 6, is characterized in that, described force application component is spring.
8. pressure regulator valve as claimed in claim 7, it is characterized in that, described pressure regulator valve also comprises piston position detection part, can carry out according to the signal of piston position detection part the motion of control piston for controlling the controller of electric machine rotation, if detect that piston is positioned at limit of sports record position, stops the rotation of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410074475.5A CN103775700A (en) | 2014-03-03 | 2014-03-03 | Pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410074475.5A CN103775700A (en) | 2014-03-03 | 2014-03-03 | Pressure regulating valve |
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| Publication Number | Publication Date |
|---|---|
| CN103775700A true CN103775700A (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410074475.5A Pending CN103775700A (en) | 2014-03-03 | 2014-03-03 | Pressure regulating valve |
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| CN (1) | CN103775700A (en) |
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| CN107387777A (en) * | 2017-08-16 | 2017-11-24 | 浙江海洋大学 | Corrosion-resistant stop valve |
| CN108386590A (en) * | 2018-02-22 | 2018-08-10 | 中国舰船研究设计中心 | Link-type super pressure control valve and control method |
| CN108679448A (en) * | 2018-06-02 | 2018-10-19 | 哈尔滨工业大学 | Microfluid flow on-line control device and detection method |
| CN112253842A (en) * | 2020-11-03 | 2021-01-22 | 天生桥二级水力发电有限公司 | Low-noise pressure reducing valve |
| CN116557603A (en) * | 2023-06-13 | 2023-08-08 | 五洲阀门股份有限公司 | High Wen Zhusai governing valve |
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| CN116557603B (en) * | 2023-06-13 | 2023-10-27 | 五洲阀门股份有限公司 | High Wen Zhusai governing valve |
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Application publication date: 20140507 |