CN201810841U - Balance valve core mechanism used on gas pressure regulator - Google Patents
Balance valve core mechanism used on gas pressure regulator Download PDFInfo
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- CN201810841U CN201810841U CN2010202353236U CN201020235323U CN201810841U CN 201810841 U CN201810841 U CN 201810841U CN 2010202353236 U CN2010202353236 U CN 2010202353236U CN 201020235323 U CN201020235323 U CN 201020235323U CN 201810841 U CN201810841 U CN 201810841U
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- valve core
- valve
- balance
- gas pressure
- pressure regulator
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Abstract
The utility model discloses a balance valve core mechanism used on a gas pressure regulator, which is installed in a valve body of the gas pressure regulator, and is characterized in that a main valve flap and a balance membrane are riveted with a press ring to form a valve flap component; a valve rod and the valve flap component are connected into a whole by a clamp ring and a fixed spring; a valve core component is formed by the press ring, an O-shaped ring and a valve core; the valve flap component and the combination formed by the valve rod, the clamp ring and the fixed spring are arranged in a valve core seat and a spring seat is fixed and limited by the clamp ring and clamped by a return spring; and the lower end of the return spring is clamped on the valve core. The mechanism is arranged in a closed-loop system of the regulator so as to induce the influence of P1 and generate a feedback to offset the interference of the P1, so that the interference of P1 to P2 is eliminated in the system of the regulator, the output is more stable and the accuracy is higher.
Description
Technical field
The utility model relates to a kind of fitting device of gas pressure regulator, governor, is specifically related to a kind of balance valve core mechanism that is used for gas pressure regulator, governor.
Background technique
The fundamental function of pressure governor is: when system pressure being maintained in certain tolerance interval, also must satisfy the traffic requirement in downstream.When flow velocity was low, the pressure governor flap dwindled passage with limited flow near valve seat.When demand volume increased, flap increased its opening degree, augmented flow away from valve seat.In the ideal case, pressure governor should be able to provide constant downstream pressure when carrying required flow.From hydromechanical viewpoint, pressure governor is a throttle element that local resistance can change, and promptly by changing orifice size, the kinetic energy of flow velocity and fluid is changed, and causes the different pressure losses, thereby reaches the purpose of decompression.Rely on the adjusting of control and regulating system then, the fluctuation of downstream pressure and spring force are balanced each other, make downstream pressure in certain margin of error, keep constant.
Represent to form a link of system as each square among Fig. 1, represent its correlation with lines that have arrow between two links, the actuating signal that the textual representation on the lines is mutual, arrow is represented the direction of signal.The pressure governor outlet pressure is called controlled variable in this self-regulating system, controlled variable is exactly the output signal of controlled plant.Cause that the factor that controlled variable changes is exactly the change of gas consumption and inlet pressure, be referred to as interference effect, Here it is acts on the input signal of controlled plant.Flow by controlling mechanism is exactly the parameter that acts on controlled plant and realize regulating action, often is called the adjusting parameter.
When the external world gives a undesired signal, then controlled variable changes, pass to measuring cell, measuring cell sends a signal and setting value compares, obtain deviation signal, and be fed to transmission device, transmission device sends displacement signal according to deviation signal and delivers to controlling mechanism, make valve event, and overcome the influence of interference effect to regulating action signal of controlled plant output.
As can be seen from Figure 1, any one signal in the self-regulating system advances along the direction of arrow, gets back to original starting point again at last, and from the angle of signal, this is a closed-loop system.The output parameter of system---controlled variable turns back to the input end of system again through measuring cell, and this way of getting back to input end that output signal is drawn is again named and fed back.And this feedback signal always as negative value and setting value relatively, and reverse feedback therefore is otherwise known as.So the self-regulating system of pressure always has feedback closed loop.
Gas pressure regulator, governor must comprise three fundamental function parts: regulating element--valve port, flap, valve rod (spool); Sensor--be generally book film, signal tube; Loading element--be generally a spring assembly (or weight).Three basic parameters of pressure governor: the outlet pressure P2--amount of being conditioned; Inlet pressure P1--interference volume; Flow Q--interference volume (as Fig. 2).
Any variation of outlet pressure all can be by the signal tube feedback on sensor (book film), and the power that the power of generation and loading element (spring) produce compares, mobile regulating element (valve rod, flap), thereby the size of change pressure governor circulation passage.
Gas pressure regulator, governor has an important characteristic-Pressure characteristics.P1 changes the variation that will cause P2, and we often are referred to as this relation the Pressure characteristics of pressure governor.Its anti-P1 interference capability of pressure governor that Pressure characteristics is good is strong.
Lever type gas pressure regulator, governor equation of equilibrium.(as Fig. 3)
(P2×AD-Fj)×L2＝P1×Ad×L1
In the formula: amount of deformation mm P1, the P2 of Ad-valve port area mm2, AD-master's book film useful area mm2, C-lever ratio L2/L1, Fj-load on spring power N, Fj=K * X, K-spring rate N/mmX-spring: inlet and outlet pressure MPa.
1. we see in order to reduce P1 and change interference to P2 from formula, can reduce valve port diameter, increase main film useful area, increase lever ratio.But reduce valve port seat diameter, increase main film size, increase lever ratio, though help to improve the Pressure characteristics of pressure governor, its effect is limited, and it also is conditional using.The common valve cored structure, higher at P1, under the occasion of traffic requirement big (being that valve port is bigger), can increase cost of goods manufactured, and voltage regulation result is undesirable.Therefore the utility model provides a kind of balance valve core structure to be used for gas pressure regulator, governor at this, solves the interference of P1 to P2, improves the gas pressure regulator, governor Pressure characteristics.
The model utility content
The purpose of this utility model is to design a kind of fitting device-balance valve core mechanism that is used on the gas pressure regulator, governor, and in its valve body of packing into, effectively solution or reduction P1 are to the interference of P2.
The technical problem that the utility model proposed is to solve like this: construct a kind of balance valve core mechanism that is used on the gas pressure regulator, governor, this balance valve core mechanism is mounted in the valve body of gas pressure regulator, governor, and be connected to form complete self-adjusting system with final controlling element, it is characterized in that: wherein main valve clack and balance diaphragm are by forming the flap assembly with the pressure ring riveted joint; Wherein valve rod fuses by collar 11, fixing spring and flap assembly; Wherein trim ring, O type circle and spool constitute mangetic core assembly; Wherein the combination that flap assembly and valve rod, collar, fixing spring are constituted is inserted in the valve core case, and with collar 2 fixed constraints spring seats; Spring seat is pushed down the fixed reset spring, and the Returnning spring lower end is stuck on the spool.
According to a kind of balance valve core mechanism that is used on the gas pressure regulator, governor described in the utility model, it is characterized in that described main valve clack, balance film, trim ring are integral by the flange riveted fixing.
According to above-described a kind of balance valve core mechanism that is used on the gas pressure regulator, governor, it is characterized in that a hardy hole is arranged on the described main valve clack.
A kind of balance valve core mechanism that is used on the gas pressure regulator, governor according to above-mentioned is characterized in that described valve rod axially cooperates with the flap assembly, and fixes and limit its degrees of freedom by fixing spring.
According to above-mentioned a kind of balance valve core mechanism that is used on the gas pressure regulator, governor, it is characterized in that, mangetic core assembly and trim ring interference fit, O type circle is limited in the spool, wherein spool and valve core case are Spielpassung, spool and valve core case also with the cooperating of voltage-regulating transformer valve body and final controlling element, adopt bolt to connect valve body and final controlling element makes spool compress balance film, be the spool chamber between valve body and the valve core case, form static seal around the spool chamber.A kind of balance valve core mechanism that is used on the gas pressure regulator, governor according to above-mentioned is characterized in that the profile of valve core case is a circular shape.
The beneficial effects of the utility model are: this mechanism comprises a regulating element (flap), a sensor (balance film), a reposition element (Returnning spring).Its structure and gas pressure regulator, governor system similarity, but that Zui Da difference is the sensor induction with it is not the amount of being conditioned P2, but the interference volume P1 of induction, this moment, P1 was by hardy hole 18, act on the upside of balance film, simultaneously, P1 also acts on the downside of main valve clack, because main valve clack 8, balance film 13, trim ring 10 is integral by the flange riveted fixing, thereby makes P1 act on this simultaneously on the whole, and force direction is relative, cancel each other, disturb and fluctuation even P1 has, the back of cancelling each other reduces the main valve clack influence that is riveted into one, and effectively reduces the interference of P1.The effect of reposition element (spring) is not to set a power, by flap the trend of upwards opening is arranged and provide a very little reposition force, and the pressure governor system is normally moved.
Description of drawings
Fig. 1 is a gas pressure regulator, governor closed-loop system schematic flow sheet
Fig. 2 is a gas pressure regulator, governor closed-loop system working state schematic representation
Fig. 3 is a gas pressure regulator, governor working principle schematic representation
Fig. 4 is the structural representation of balance valve core
Fig. 5 is the assembly structure figure of Fig. 4
Fig. 6 .1 is a flap modular construction schematic representation
Fig. 6 .2 is the plan structure schematic representation of flap assembly
Fig. 7 is the mangetic core assembly structural representation
Fig. 8 is balance valve core structural representation in gas pressure regulator, governor
Wherein, 1, valve rod, 2, collar, 3, spring seat, 4, Returnning spring, 5, spool, 6, valve core case, 7, pressure ring, 8, main valve clack, 9, O type circle, 10, trim ring, 11, collar, 12, fixing spring, 13, balance film, 14, the P2 signal tube, 15, lever, 16, push rod, 17, primary valve, 18, hardy hole.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
As shown in Figure 3, the purpose of this utility model is to design a kind of balance valve core mechanism that is used on the gas pressure regulator, governor, and in its valve body of packing into, effectively solution or reduction P1 are to the interference of P2.The mechanism of a kind of balance valve core of the utility model structure, its effect is in system, the influence of induction P1 produces the interference that a feedback canceller falls P1.Thereby eliminate the interference of P1 to P2 in the pressure governor system, make output more stable, precision is higher.
Balance valve core described in the utility model mechanism is mounted in the valve body of gas pressure regulator, governor, and is connected to form the self-adjusting system of finishing with final controlling element.Wherein main valve clack 8 and balance film 13 are formed the flap assembly by riveting with pressure ring 7.Wherein valve rod 1 fuses with the flap assembly by collar 11 and fixing spring 12.Wherein trim ring 10, O type circle 9, spool 5 constitute mangetic core assembly.Trim ring 10 is an interference fit with spool 5, and O type circle 9 is limited in the mangetic core assembly.
The wherein combination that flap assembly and valve rod 1, collar 11, fixing spring 12 are constituted inserts in the valve core case 6, presses spool 5.Load onto Returnning spring 4 at last, with collar 2 fixed constraints spring seats 3.Promptly constitute balance valve core mechanism.This mechanism valve body of packing into is connected with final controlling element, constitutes the self-adjusting system of finishing.
According to a kind of balance valve core mechanism that is used on the gas pressure regulator, governor described in the utility model, its preferred version is main valve clack 8, balance film 13, and trim ring 10 is integral by the flange riveted fixing.Its advantage is simple in structure, and sealing is good.
According to a kind of balance valve core mechanism that is used on the gas pressure regulator, governor described in the utility model, its preferred version is to have on the main valve clack hardy hole 18, and by its special cucurbit shape, valve rod 1 and flap assembly cooperate axially having finished.Cooperate back hardy hole 18 apertures to cooperate, and macropore stay the telltale hole into P1 just, the P1 of flap front end can be imported in the chamber of balance valve core with valve lever clearance.
According to a kind of balance valve core mechanism that is used on the gas pressure regulator, governor described in the utility model, its preferred version is that valve rod 1 and flap assembly are after axially working good, fix by fixing spring 12 and to limit its degrees of freedom, because certain matching gap, the flexibility characteristics of spring self in addition.Valve rod 1 and the flexible structure that cooperates of flap assembly, effect have been constituted with buffering.These characteristics make the suffered impact under the swiftly flowing state of valve body inner fluid of flap assembly, alleviate to some extent when reaching valve rod 1, avoid valve rod 1 to bear excessive rigid impulse and influence performance.
According to a kind of balance valve core mechanism that is used on the gas pressure regulator, governor described in the utility model, after its preferred version is mangetic core assembly and trim ring interference fit, O type circle 9 is limited in the spool 5, plays the effect of motive sealing, effective indoor gas of sealing and balancing spool chamber in the stem movement process.After spool 5 and valve core case 6 Spielpassung, by with voltage-regulating transformer valve body, the cooperation of final controlling element, bolt connects the pretightening force that valve body and final controlling element produce makes spool 5 compress balance film 13, forms static seal around the balance valve core chamber.
According to a kind of balance valve core mechanism that is used on the gas pressure regulator, governor described in the utility model, its preferred version is that the profile of valve core case 6 is a circular shape, in valve flowing channel, and this circular-arc streamline shape, be beneficial to the motion of fluid, also avoided the generation of noise.
According to a kind of balance valve core mechanism that is used on the gas pressure regulator, governor described in the utility model, its preferred version is to select for use a rigidity very little, and the higher Returnning spring 4 of free height.Promptly the variation of reposition force is very little in main valve clack 8 movement travels, extremely can ignore in system and reposition force is little, and make main valve clack 8 have the trend that unlatching resets.
Balance valve core mechanism can regard the regulating element (function that flap is arranged) of pressure governor as in the composition of pressure governor, itself has self-regulating function.The flap that promptly has self-regulating function.
Medium enters the P2 chamber from the P1 chamber of valve body by valve port.P2 pressure feeds back to the cavity of resorption of main valve final controlling element by signal tube, main film is under the effect of P2 pressure and Regulation spring, the main valve clack that drives on the balance valve core by lever, push rod, valve rod 1 moves, and changes the aperture size of primary valve and main valve clack, reaches the effect that adjusts mouth pressure.
When the gas consumption in pressure governor downstream increased, outlet pressure P2 had a declining tendency.At this moment, the pressure of main valve final controlling element cavity of resorption descends, and makes winner's film under the active force of spring, moves downward.Valve rod on the balance valve core drives main valve clack and is moved to the left under the effect of Returnning spring, the aperture of main valve clack and primary valve is increased, thereby increase by the gas flow of primary valve, keeps the constant of downstream pressure.
When the gas consumption in pressure governor downstream reduced, its effect was opposite with said process, and P2 has the trend of rising.At this moment, cavity pressure raises under the main valve final controlling element, makes winner's film under the active force of spring, moves upward.Valve rod on the balance valve core drives main valve clack and moves right under the active force of lever and push rod, till main valve clack is closed.
The equilibrium establishment equation is as follows:
(P2×AD-Fj)×L2＝(P1×Ad-P1×S1+F′)×L1
In the formula: Ad-valve port area mm2
AD-book film useful area mm2
The useful area mm2 of S1-balance valve core upper film
C-lever ratio L2/L1
Fj-load on spring power N Fj=K * X
The power of F '-Returnning spring
K-spring rate N/mm
Amount of deformation mm P1, the P2 of X-spring: inlet and outlet pressure MPa
2. we see obviously and formula difference 1. from formula.If formula 2. in the useful area of balance valve core upper film identical with the area of valve port, Ad=S1.Then
That is, when the useful area of the film on the balance valve core was identical with valve port area, the result of P2 was not influenced by P1.The utility model is effectively eliminated the P1 interference volume, when inlet pressure P1 plays pendulum, can not influence P2 output result, makes the output of the P2 amount of being conditioned stable, and precision is higher.
Claims (6)
1. balance valve core mechanism that is used on the gas pressure regulator, governor, this balance valve core mechanism is mounted in the valve body of gas pressure regulator, governor, and be connected to form complete self-adjusting system with final controlling element, it is characterized in that: wherein main valve clack (8) and balance diaphragm (13) are by forming the flap assembly with pressure ring (7) riveted joint; Wherein valve rod (1) fuses with the flap assembly by collar (11), fixing spring (12); Wherein trim ring (10), O type circle (9) and spool (5) constitute mangetic core assembly; Wherein the combination that flap assembly and valve rod (1), collar (11), fixing spring (12) are constituted is inserted in the valve core case (6), and with collar (2) fixed constraints spring seat (3); Spring seat (3) is pushed down fixed reset spring (4), and Returnning spring (4) lower end is stuck on the spool (5).
2. a kind of balance valve core mechanism that is used on the gas pressure regulator, governor according to claim 1 is characterized in that described main valve clack (8), balance film (13), trim ring (10) are integral by the flange riveted fixing.
3. a kind of balance valve core mechanism that is used on the gas pressure regulator, governor according to claim 1 is characterized in that a hardy hole (18) is arranged on the described main valve clack (8).
4. a kind of balance valve core mechanism that is used on the gas pressure regulator, governor according to claim 1 is characterized in that described valve rod (1) axially cooperates with the flap assembly, and fixes and limit its degrees of freedom by fixing spring (12).
5. a kind of balance valve core mechanism that is used on the gas pressure regulator, governor according to claim 1, it is characterized in that, mangetic core assembly and trim ring (10) interference fit, O type circle (9) is limited in the spool (5), wherein spool (5) is a Spielpassung with valve core case (6), spool (5) and valve core case (6) also with the cooperating of voltage-regulating transformer valve body and final controlling element, adopt bolt connection valve body and final controlling element to make spool (5) compress balance film (13), be the spool chamber between valve body and the valve core case (6), form static seal around the spool chamber.
6. a kind of balance valve core mechanism that is used on the gas pressure regulator, governor according to claim 1 is characterized in that the profile of valve core case (6) is a circular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202353236U CN201810841U (en) | 2010-06-24 | 2010-06-24 | Balance valve core mechanism used on gas pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202353236U CN201810841U (en) | 2010-06-24 | 2010-06-24 | Balance valve core mechanism used on gas pressure regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810841U true CN201810841U (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202353236U Expired - Lifetime CN201810841U (en) | 2010-06-24 | 2010-06-24 | Balance valve core mechanism used on gas pressure regulator |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322532A (en) * | 2011-08-25 | 2012-01-18 | 开维喜阀门集团有限公司 | A kind of zero-pressure is opened the remote control float valve |
| CN103256268A (en) * | 2013-05-24 | 2013-08-21 | 平原机器厂（新乡） | Pedal pilot control valve |
| CN103267039A (en) * | 2013-05-24 | 2013-08-28 | 平原机器厂（新乡） | Spring installation seat for pilot valve and manual pilot valve using installation seat |
| WO2014063619A1 (en) * | 2012-10-22 | 2014-05-01 | 费希尔久安输配设备(成都)有限公司 | Valve assembly |
| CN103775704A (en) * | 2012-10-22 | 2014-05-07 | 费希尔久安输配设备(成都)有限公司 | Valve assembly |
| CN103775697A (en) * | 2012-10-22 | 2014-05-07 | 费希尔久安输配设备(成都)有限公司 | Spring adjusting device and valve assembly |
| CN109340446A (en) * | 2018-11-26 | 2019-02-15 | 乐山川天燃气输配设备有限公司 | A kind of indirect-action type pressure regulator |
| CN113324075A (en) * | 2021-04-21 | 2021-08-31 | 浙江苍南仪表集团东星能源科技有限公司 | Integral balanced valve core subassembly and voltage regulator |
-
2010
- 2010-06-24 CN CN2010202353236U patent/CN201810841U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322532A (en) * | 2011-08-25 | 2012-01-18 | 开维喜阀门集团有限公司 | A kind of zero-pressure is opened the remote control float valve |
| WO2014063619A1 (en) * | 2012-10-22 | 2014-05-01 | 费希尔久安输配设备(成都)有限公司 | Valve assembly |
| CN103775704A (en) * | 2012-10-22 | 2014-05-07 | 费希尔久安输配设备(成都)有限公司 | Valve assembly |
| CN103775697A (en) * | 2012-10-22 | 2014-05-07 | 费希尔久安输配设备(成都)有限公司 | Spring adjusting device and valve assembly |
| CN103256268A (en) * | 2013-05-24 | 2013-08-21 | 平原机器厂（新乡） | Pedal pilot control valve |
| CN103267039A (en) * | 2013-05-24 | 2013-08-28 | 平原机器厂（新乡） | Spring installation seat for pilot valve and manual pilot valve using installation seat |
| CN109340446A (en) * | 2018-11-26 | 2019-02-15 | 乐山川天燃气输配设备有限公司 | A kind of indirect-action type pressure regulator |
| CN109340446B (en) * | 2018-11-26 | 2023-12-22 | 乐山川天燃气输配设备有限公司 | Indirect acting voltage regulator |
| CN113324075A (en) * | 2021-04-21 | 2021-08-31 | 浙江苍南仪表集团东星能源科技有限公司 | Integral balanced valve core subassembly and voltage regulator |
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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: 20110427 |