CN1804740A - Electric valve control method based on high-level feature computation and valve - Google Patents
Electric valve control method based on high-level feature computation and valve Download PDFInfo
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- CN1804740A CN1804740A CN 200510061790 CN200510061790A CN1804740A CN 1804740 A CN1804740 A CN 1804740A CN 200510061790 CN200510061790 CN 200510061790 CN 200510061790 A CN200510061790 A CN 200510061790A CN 1804740 A CN1804740 A CN 1804740A
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Abstract
The invention discloses a valve control method and a valve which provides a motorized valve control method and the valve for achieving it based on advanced characteristic calculation. It adopts advanced characteristic calculated motorized valve control method; when the analog variable electro-dynamical conditioner opens the valve of the butterfly valve component, the water flows from the front valve port through the port and the butterfly valve and then the rear valve port. The two ends of the plate arrange the pressure measuring mouse to measure the dynamic pressure differential of the plate.
Description
Technical field
The present invention relates to a kind of valve control method and valve.More particularly, the present invention relates to a kind of electrically operated valve control method of calculating based on advanced features and the valve of realizing this method.
Background technology
Ubiquity the hydraulic misadjustment phenomenon in the central air conditioning water system pipe network, and the pipe network water force unbalance easily causes the waste of system's energy and the increase of equipment operation noise.Adopting intelligent dynamic balance motor-driven variable valve is to solve the hydraulically balanced best means of complex grid.
The present various mobile equilibrium type motor regulated valves of widely applying (comprising the dynamic balance motor-driven control valve that common electric variable valve and mechanical type differential pressure control valve combine), it is a kind of electric control valve (or claim electronic dynamic adjustments valve or claim pressure independent type electric control valve) with the automatic control function of mechanical self-operated type pressure reduction in essence, the principle of its mobile equilibrium is fairly simple, promptly works as the two ends pressure reduction DP=P of one-piece type dynamic balance motor-driven variable valve or combined dynamic balance motor-driven variable valve
1-P
3During random variation, utilize the pressure balance controller by changing DP
2=P
2-P
3Difference guarantee DP
1=P
1-P
2Automatic constant (the rear-mounted principle of differential pressure controller).Perhaps, utilize the pressure balance controller by changing DP
1=P
1-P
2Difference guarantee DP
2=P
2-P
3Automatic constant (differential pressure controller forward type principle).
Certain world-renowned brand partial dynamic balance electric variable valve product technology data at present leading market are enumerated as follows:
1, DN25 type product, operting differential pressure scope (32～320) KPa, maximum Control Flow 0.68L/S;
2, DN40 type product, operting differential pressure scope (40～320) KPa, maximum Control Flow 2.34L/S;
3, IDN80 type product, operting differential pressure scope (35～400) KPa, maximum Control Flow 7.06L/S;
4, another kind of DN80 type product, operting differential pressure scope (80～400) KPa, maximum Control Flow 9.82L/S.
Pass through our test and discover that the adjustment feature curve of the dynamic balance motor-driven variable valve product of this reputable brand is to belong to the fast katal of a kind of plan in essence, does not belong to equal percent regulating characteristic, does not have desirable motorized valve control characteristic.
The dynamic balance motor-driven variable valve product of widely applying generally adopts the realization principle of spring mechanical self-operated type at present, thereby having that through-current capability is obviously less than normal, dynamic duty pressure reduction range of control is little, application is dumb, the operting differential pressure starting point is higher, higher (because DP=DP totally consumes energy
1+ DP
2, it is constant to keep motorized adjustment pressure reduction partly with the pressure of sacrificing differential pressure controller during actual the use.The pressure of obviously sacrificing differential pressure controller also is the waste energy consumption.)
Analog quantity motorized adjustment butterfly valve is widely used in the simple control that fluid flows because of advantages such as it are simple in structure, easy to manufacture, through-current capability is big.If high-grade intelligent feature calculation method is embedded into intelligent controller, and carrying out senior combined integrated chemical control system in conjunction with differential pressure pickup, analog quantity motorized adjustment butterfly valve, this will be a kind of energy-saving dynamic balance motor-driven variable valve with desirable valve regulating characteristic.
When adopting the very low high-grade intelligent type dynamic balance motor-driven variable valve of this initial operting differential pressure value, pipes system water system synthesis energy saving effect reaches 10%～45%.
At present known also the discovery a kind ofly calculated and the realize ideal mobile equilibrium type motor regulated valve of valve regulating characteristic of intelligence control method based on advanced features.
Summary of the invention
Fundamental purpose of the present invention is to overcome deficiency of the prior art, provides a kind of based on the electrically operated valve control method of calculating based on advanced features, and this control method is based on valve working pressure reduction and regulates.It is a kind of based on the electrically operated valve control method of calculating based on advanced features that further aim of the present invention is to provide, and this control method is based on the valve working flow and regulates.Further object of the present invention is to provide the intelligent dynamic balance motor-driven variable valve of realizing preceding method.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The invention provides a kind of electrically operated valve control method of calculating based on advanced features, may further comprise the steps:
(1) the dynamic duty pressure reduction maximal value of setting valve in the universal Advanced Control device that can realize senior mathematical function calculating and pid control algorithm;
(2) set dynamic duty flow maximal value according to the dynamic duty pressure reduction maximal value and the orifice plate area of valve;
(3) the desirable control characteristic of setting valve be linear adjustment characteristic, equal percent regulating characteristic or para-curve control characteristic wherein any one;
(4) the Advanced Control device carries out data sampling to the standard analog electric signal of outside input, reads in the value of outside valve position stroke;
(5) outside valve position stroke standard analog electrical signal conversion is become nondimensional valve position stroke;
(6) obtain nondimensional dynamic duty pressure differential resetting value according to the desirable control characteristic of valve, and convert the dynamic duty pressure differential resetting value of dimension to;
(7) will there be the measured value and the setting value of the dynamic duty pressure reduction of dimension to compare, regulate the aperture of analog quantity motorized adjustment butterfly valve according to the pid control computation result.
The present invention further provides a kind of electrically operated valve control method of calculating based on advanced features, may further comprise the steps:
(1) the dynamic duty flow maximal value of setting valve in the universal Advanced Control device that can realize senior mathematical function calculating and pid control algorithm;
(2) set dynamic duty pressure reduction maximal value according to the dynamic duty flow maximal value and the orifice plate area of valve;
(3) the desirable control characteristic of setting valve be linear adjustment characteristic, equal percent regulating characteristic or para-curve control characteristic wherein any one;
(4) the Advanced Control device carries out data sampling to the standard analog electric signal of outside input, reads in the value of outside valve position stroke;
(5) outside valve position stroke standard analog electrical signal conversion is become nondimensional valve position stroke;
(6) obtain nondimensional dynamic duty flow setting value according to the desirable control characteristic of valve, and convert the dynamic duty flow setting value of dimension to;
(7) utilize orifice plate area and have the dynamic duty differential pressure measurement value of dimension to obtain the dynamic duty flow measurements of dimension and compare, regulate the aperture of analog quantity motorized adjustment butterfly valve according to the pid control computation result with setting value.
The present invention also provides the intelligent dynamic balance motor-driven variable valve of realizing aforementioned electric movable valve control method, comprise valve body and the motorized adjustment valve module of being located in the valve body 2, be provided with orifice plate 5 in the inner flow passage of described valve body, on the valve body wall of orifice plate 5 front and back, offer respectively pressure measurement chew 7 and measurement chew 9; Differential pressure pickup 10 is chewed 7 with pressure measurement respectively by pressure dispatch tube 8 and is chewed 9 with measurement and link to each other; Advanced Control device 11 links to each other with electric actuator 14 on being arranged at motorized adjustment valve module 2 with differential pressure pickup 10 respectively by cable 13.
As a kind of improvement of the present invention, described orifice plate 5 is placed in the inner flow passage of valve body by the form of clamping.
As a kind of improvement of the present invention, fixed head 4 is set in the inner flow passage of described valve body, orifice plate 5 directly is assemblied on the fixed head 4 by screw or bolt.
As a kind of improvement of the present invention, described valve body is divided into front valve shell 6 and rear valve body 1, and front valve shell 6, motorized adjustment valve module 2 and rear valve body 1 are connected successively by bolt 3.
As a kind of improvement of the present invention, described electric actuator 14 is angle stroke analog quantity electric actuator.
As a kind of improvement of the present invention, described pressure dispatch tube 8 is copper pipes.
As a kind of improvement of the present invention, described motorized adjustment valve module 2 is motorized adjustment butterfly valve assemblies.
As a kind of improvement of the present invention, described valve body can be isodiametric cylindrical shell or the cylindrical shell that becomes diameter.
Compared with prior art, the invention has the beneficial effects as follows:
By adopting the motorized valve control method of calculating based on advanced features, when the analog quantity electric actuator is opened the valve body in the butterfly valve assembly, water flows into from the runner inlet of front valve shell, and by streaming the valve body of butterfly valve, the runner exit from rear valve body flows out at last behind the orifice plate of flowing through.The two ends of orifice plate are provided with pressure measurement and chew, and are used for the dynamic differential pressure of measuring diaphragm.
Utilize the data acquisition function of Advanced Control device to read in outside valve position stroke (i.e. the standard of outside input control electric signal opening value is as the external setting-up value): (1) is for indirect flow mobile equilibrium control method, utilize the advanced features computing formula to obtain out the dynamic duty pressure differential resetting value at orifice plate two ends, when the dynamic duty differential pressure measurement value at orifice plate two ends and this setting value generation deviation, utilize pid control algorithm to regulate the aperture of analog quantity electric butterfly valve, the operting differential pressure at control orifice plate two ends is constant in certain dynamic setting value (this is a kind of by the given dynamic differential pressure setting value of external analog input mode), thereby has realized high-precision dynamic flow balance indirectly; (2) for direct flow dynamics balance control method, adopt the advanced features computing formula to obtain the dynamic duty flow setting value of orifice plate, when the dynamic duty flow measurements of orifice plate (utilize the area of dynamic duty differential pressure measurement value and orifice plate to convert and to obtain the measured value of flow) during with dynamic duty flow setting value generation deviation, utilize pid control algorithm directly to regulate the aperture of analog quantity electric butterfly valve, control punch plate current amount is High Precision Automatic constant in certain dynamic setting value (this be a kind of dynamically changeable pass through the given flow setting value of external analog input mode), thereby has directly realized the balance of dynamic flow.
The concrete desirable valve regulating characteristic of intelligent dynamic balance motor-driven variable valve of the present invention, and structural manufacturing process is simple, the operting differential pressure initial value is little, through-current capability is big, long service life, cheap for manufacturing cost, is fit to the many variety production of short run.Its synthesis energy saving effect is fairly obvious when being applied to air-conditioning, heating network water system.
Intelligent dynamic balance motor-driven variable valve of the present invention can also be widely used in the Based Intelligent Control that various fluids flow, as being extended to the application of intelligent flow operation valve, intelligent pressure/differential operation valve.
Description of drawings
Fig. 1 is broken section structural representation of dynamic balance motor-driven variable valve and a wiring layout in the embodiment of the invention.
Symbol in the legend: 1 rear valve body, 2 motorized adjustment valve modules, 3 coupling bolts, 4 fixed heads, 5 orifice plates, 6 front valve shells, 7 pressure measurement are chewed, 8 pressure dispatch tubes, 9 pressure measurement are chewed, 10 differential pressure pickups, 11 Advanced Control devices, 12 connection terminals, 13 cables, 14 analog quantity electric actuator.
Embodiment
With reference to the accompanying drawings 1, will describe the present invention below.
Provided a kind of intelligent dynamic balance motor-driven variable valve among the figure, comprised motorized adjustment valve module 2 and the angle stroke analog quantity electric actuator 14 that links to each other with motorized adjustment butterfly valve assembly 2, regulated in order to the analog quantity of implementing butterfly valve.Front valve shell 6, motorized adjustment butterfly valve assembly 2, rear valve body 1 connect successively, connect by bolt 3 to be fitted to one.Motorized adjustment valve module 2 can adopt the electric butterfly valve assembly, and valve body can be isodiametric cylindrical shell or the cylindrical shell that becomes diameter, and analog quantity electric actuator 14 can be an angle stroke analog quantity electric actuator.
The inner flow passage of described front valve shell 6 has built-in orifice plate 5, directly is fitted on the fixed head 4 in the front valve shell 6 by screw or bolt, perhaps is placed in the inner flow passage of front valve shell 6 by the form of clamping.Offer on the wall of front valve shell 6 pressure measurement chew 9 and pressure measurement chew 7, be connected to the high-pressure side and the low pressure end of differential pressure pickup 10 by pressure dispatch tube 8, in order to measure the two ends pressure reduction of built-in orifice plate 5.Pressure dispatch tube 8 can adopt copper pipe.
Analog quantity electric actuator 14 is fitted on the motorized adjustment butterfly valve assembly 2.Differential pressure pickup 10, Advanced Control device 11, analog quantity electric actuator 14 connect successively by cable 13.
Described Advanced Control device 11 is general PID controller products, is embedded in or downloads " a kind of based on intelligent characteristic computing method realize ideal the control algolithm of control characteristic " and the advanced procedures that realizes.Utilize this program, Advanced Control device 11 outputting standard control signals are directly regulated analog quantity electric actuator 14 by cable 13, by the orifice plate 5 balance dynamic flows control in the aperture realization front valve shell 6 of regulating electric butterfly valve.Described indirect flow mobile equilibrium control algolithm belongs to the direct balance method of pressure reduction, and described direct flow dynamics balancing control algorithm belongs to the direct balance method of flow.This is a kind of electronic type dynamic flow balance method that typically belongs to the pressure independent type.
For intelligent dynamic balance motor-driven variable valve of the present invention, can introduce " dummy variable " x (being previously described outside valve position stroke) of a control valve position stroke, the standard analog electric signal that it is promptly imported corresponding to the outside.For example 0 ~ 10VDC signal indication scope x ∈ [0,10], 4～20mA signal indication x ∈ [4,20].
Might as well suppose dimensionless valve position stroke variable X, dimensionless flow Q, the dimensionless pressure differential deltap P of dynamic balance motor-driven variable valve, obviously can carry out the unit definition them:
X∈[0，1]、Q∈[0，1]、ΔP∈[0，1]
Described nondimensional outside valve position stroke X is one and carries out the dimensionless number of unitization by outside input standard electric signal, for example for 0～10VDC signal, gets X=x/10.
Because the dimensionless relative flow coefficient K of variable valve
VS=1, so formula is arranged:
Perhaps Δ P=Q
2(2)
(1) for linear adjustment characteristic:
Q＝X，ΔP＝X
2 (3)
(2) for equal percent regulating characteristic (the R constant needs given separately):
Q＝R
X-1，ΔP＝R
2·(X-1) (4)
Can certainly adopt approximate treatment fitting formula Δ P=f (x)=y for formula (4), as follows for the concrete fitting formula of part R value:
During R=5:
y＝1.014271057x
4-.7317960344x
3+.6015181377x
2+.07302617232x+.04132977829 (4-1)
During R=10:
y＝2.416996777x
4-2.613022197x
3+1.304141675x
2-.1281689068x+.01426559837 (4-2)
During R=15:
y＝3.390010414x
4-4.078431771x
3+1.916685397x
2-.2491610138x+.01122567749 (4-3)
During R=20:
y＝4.107296555x
4-5.209957153x
3+2.416680491x
2-.3384355394x+.01135043900 (4-4)
During R=25:
y＝3.797706268x
4-4.619538998x
3+2.030543465x
2-.2718329091x+.008173257454 (4-5)
During R=40:
y＝5.823169698x
4-8.043518449x
3+3.744522919x
2-.5624232324x+.01510551247 (4-6)
During R=50:
y＝6.352804210x
4-8.947171380x
3+4.186310098x
2-.6356160351x+.01680504889
(4-7)
(3) for the para-curve control characteristic:
Q＝X
2，ΔP＝X
4 (5)
Obviously, formula (3)～formula (5) is exactly the dimensionless advanced features computing formula that realizes the desirable control characteristic of valve, and wherein formula (4) also can adopt approximate fitting formula to be described.
When analog quantity electric actuator 14 was opened the valve body in the analog quantity motorized valve assembly 2, water flowed into from front valve shell 6 runners inlet, and orifice plate 5 backs of flowing through are by streaming butterfly valve body, and the runner exit from rear valve body 1 flows out at last.The two ends of orifice plate 5 be provided with pressure measurement chew 7 and pressure measurement chew 9, be used for the two ends pressure reduction of measuring diaphragm.
Described Advanced Control device 11 both can adopt the universal Advanced Control device product that has senior mathematical function computing function and realize pid control algorithm, also can develop Advanced Control device product specially.Described Advanced Control device 11 also comprises some standard I/O connection terminal 12.The general PLC product of S7-200 of for example optional SIENENS company also carries out advanced programming with STEP7 and realizes.
When the electric signal x of outside valve position stroke gives regularly (promptly outside input valve position setting value), the dimensionless valve position stroke X of correspondence is also promptly given:
(1) based on the principle of work of indirect flow mobile equilibrium algorithm: utilize nondimensional advanced features computing formula (3) or formula (4) or formula (5) to calculate the setting value of dimensionless pressure differential deltap P easily.By conversion given naturally the dynamic duty pressure differential resetting value (this is a kind of dynamic setting value, and promptly setting value changes with external input signal) at the orifice plate two ends of dimension arranged.When the dynamic duty differential pressure measurement value at orifice plate 5 two ends and dynamic duty pressure differential resetting value generation deviation, the pressure reduction automatic constant that the internal PID control algolithm of utilizing Advanced Control device 11 realizes orifice plate 5 by the aperture that changes the motorized adjustment butterfly valve is in certain dynamic setting value, thereby realized the balance of Dynamic High-accuracy flow indirectly.
(2) based on the principle of work of direct flow dynamics balanced algorithm: utilize nondimensional advanced features computing formula (3) or formula (4) or formula (5) to calculate the setting value of dimensionless flow Q easily.By conversion given naturally the dynamic duty flow setting value (this is a kind of dynamic flow setting value, and promptly setting value changes with external input signal) at the orifice plate two ends of dimension arranged.When the measured value of orifice plate 5 two ends dynamic duty flows (utilizing dynamic differential pressure measured value and orifice plate area to realize indirect flow measurement) during with dynamic duty flow setting value generation deviation, the internal PID control algolithm of utilizing Advanced Control device 11 is by changing the aperture of motorized adjustment butterfly valve, the flow automatic constant of directly having realized orifice plate 5 is in certain dynamic setting value, i.e. dynamic flow balance.
Intelligent dynamic balance motor-driven variable valve advanced features of the present invention calculates with control flow as follows:
(1) may further comprise the steps based on indirect flow mobile equilibrium control method:
(1) the dynamic duty pressure reduction maximal value of setting valve in the universal Advanced Control device that can realize senior mathematical function calculating and pid control algorithm;
(2) set dynamic duty flow maximal value according to the dynamic duty pressure reduction maximal value and the orifice plate area of valve;
(3) the desirable control characteristic of setting valve be linear adjustment characteristic, equal percent regulating characteristic or para-curve control characteristic wherein any one;
(4) the Advanced Control device carries out data sampling to the standard analog electric signal of outside input, reads in the value of outside valve position stroke;
(5) outside valve position stroke standard analog electrical signal conversion is become nondimensional valve position stroke;
(6) obtain nondimensional dynamic duty pressure differential resetting value according to the desirable control characteristic of valve, and convert the dynamic duty pressure differential resetting value of dimension to;
(7) will there be the measured value and the setting value of the dynamic duty pressure reduction of dimension to compare, regulate the aperture of analog quantity motorized adjustment butterfly valve according to the pid control computation result.
(2) may further comprise the steps based on direct flow dynamics balance control method:
(1) the dynamic duty flow maximal value of setting valve in the universal Advanced Control device that can realize senior mathematical function calculating and pid control algorithm;
(2) set dynamic duty pressure reduction maximal value according to the dynamic duty flow maximal value and the orifice plate area of valve;
(3) the desirable control characteristic of setting valve be linear adjustment characteristic, equal percent regulating characteristic or para-curve control characteristic wherein any one;
(4) the Advanced Control device carries out data sampling to the standard analog electric signal of outside input, reads in the value of outside valve position stroke;
(5) outside valve position stroke standard analog electrical signal conversion is become nondimensional valve position stroke;
(6) obtain nondimensional dynamic duty flow setting value according to the desirable control characteristic of valve, and convert the dynamic duty flow setting value of dimension to;
(7) utilize orifice plate area and have the dynamic duty differential pressure measurement value of dimension to obtain the dynamic duty flow measurements of dimension and compare, regulate the aperture of analog quantity motorized adjustment butterfly valve according to the pid control computation result with setting value.
Intelligent dynamic balance motor-driven variable valve of the present invention specifically is exemplified below:
For the intelligent dynamic balance motor-driven variable valve of the present invention of certain DN80 product, design effort pressure differential range (16～600) KPa, orifice plate design area 2620mm
2, the maximum controlling value 32m of dynamic duty flow
3/ h.If the equal percent regulating characteristic (getting R=50) of selecting for use formula (4) to realize ideal, then the relative external valve place value of Dui Ying external setting-up, pressure reduction, Control Flow data are as shown in the table:
| Outside relatively valve position X | 0.05 | 0.15 | 0.25 | 0.35 | 0.45 | 0.55 | 0.65 | 0.75 | 0.85 | 0.95 | 1 |
| Dynamic duty pressure reduction KPa | 0.00 9 | 0.02 1 | 0.04 5 | 0.09 9 | 0.21 6 | 0.473 | 1.03 5 | 2.26 3 | 4.95 | 10.8 2 | 16 |
| Dynamic duty flow m 3/h | 0.78 | 1.15 | 1.70 | 2.52 | 3.72 | 5.50 | 8.14 | 12.0 3 | 17.8 | 26.3 | 32 |
The corresponding relation such as the following table of outside relatively valve position and standard electric signal:
| Outside relatively valve position X | 0.05 | 0.15 | 0.25 | 0.35 | 0.45 | 0.5 | 0.55 | 0.65 | 0.75 | 0.85 | 0.95 | 1 |
| 4-20mADC corresponding current (mA) | 0.5 | 1.5 | 2.5 | 3.5 | 4.5 | 5 | 5.5 | 6.5 | 7.5 | 8.5 | 9.5 | 10 |
| 0-10VDC corresponding voltage (V) | 4.8 | 6.4 | 8 | 9.6 | 11.2 | 12 | 12.8 | 14.4 | 16 | 17.6 | 19.2 | 20 |
Corresponding same orifice plate only needs the more feature calculation formula of changer controller, can also realize linear adjustment characteristic or para-curve control characteristic, and these desirable control characteristics all belong to the pressure independent type.
Obviously, the operting differential pressure initial value in the above table is 16kPa, and the maximum controlling value of dynamic duty flow can reach 32m
3/ h, the overall technology data obviously are better than the mechanical type dynamic balance motor-driven variable valve of present import brand.
Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (10)
1, a kind of electrically operated valve control method of calculating based on advanced features may further comprise the steps:
(1) the dynamic duty pressure reduction maximal value of setting valve in the universal Advanced Control device that can realize senior mathematical function calculating and pid control algorithm;
(2) set dynamic duty flow maximal value according to the dynamic duty pressure reduction maximal value and the orifice plate area of valve;
(3) the desirable control characteristic of setting valve be linear adjustment characteristic, equal percent regulating characteristic or para-curve control characteristic wherein any one;
(4) the Advanced Control device carries out data sampling to the standard analog electric signal of outside input, reads in the value of outside valve position stroke;
(5) outside valve position stroke standard analog electrical signal conversion is become nondimensional valve position stroke;
(6) obtain nondimensional dynamic duty pressure differential resetting value according to the desirable control characteristic of valve, and convert the dynamic duty pressure differential resetting value of dimension to;
(7) will there be the measured value and the setting value of the dynamic duty pressure reduction of dimension to compare, regulate the aperture of analog quantity motorized adjustment butterfly valve according to the pid control computation result.
2, a kind of electrically operated valve control method of calculating based on advanced features may further comprise the steps:
(1) the dynamic duty flow maximal value of setting valve in the universal Advanced Control device that can realize senior mathematical function calculating and pid control algorithm;
(2) set dynamic duty pressure reduction maximal value according to the dynamic duty flow maximal value and the orifice plate area of valve;
(3) the desirable control characteristic of setting valve be linear adjustment characteristic, equal percent regulating characteristic or para-curve control characteristic wherein any one;
(4) the Advanced Control device carries out data sampling to the standard analog electric signal of outside input, reads in the value of outside valve position stroke;
(5) outside valve position stroke standard analog electrical signal conversion is become nondimensional valve position stroke;
(6) obtain nondimensional dynamic duty flow setting value according to the desirable control characteristic of valve, and convert the dynamic duty flow setting value of dimension to;
(7) utilize orifice plate area and have the dynamic duty differential pressure measurement value of dimension to obtain the dynamic duty flow measurements of dimension and compare, regulate the aperture of analog quantity motorized adjustment butterfly valve according to the pid control computation result with setting value.
3, a kind of intelligent dynamic balance motor-driven variable valve of realizing claim 1 or 2 described electrically operated valve control methods, comprise valve body and the motorized adjustment valve module of being located in the valve body (2), it is characterized in that: be provided with orifice plate (5) in the inner flow passage of described valve body, offer respectively on the valve body wall before and after the orifice plate (5) that (7) are chewed in pressure measurement and (9) are chewed in measurement; Differential pressure pickup (10) is chewed (7) respectively by pressure dispatch tube (8) and is chewed (9) with measurement and link to each other with pressure measurement; Advanced Control device (11) links to each other with electric actuator (14) on being arranged at motorized adjustment valve module (2) with differential pressure pickup (10) respectively by cable (13).
4, dynamic balance motor-driven variable valve according to claim 3 is characterized in that, described orifice plate (5) is placed in the inner flow passage of valve body by the form of clamping.
5, dynamic balance motor-driven variable valve according to claim 3 is characterized in that, fixed head (4) is set in the inner flow passage of described valve body, and orifice plate (5) directly is assemblied on the fixed head (4) by screw or bolt.
6, dynamic balance motor-driven variable valve according to claim 3 is characterized in that, described valve body is divided into front valve shell (6) and rear valve body (1), and front valve shell (6), motorized adjustment valve module (2) and rear valve body (1) are connected successively by bolt (3).
7, dynamic balance motor-driven variable valve according to claim 3 is characterized in that, described electric actuator (14) is an angle stroke analog quantity electric actuator.
8, dynamic balance motor-driven variable valve according to claim 3 is characterized in that, described pressure dispatch tube (8) is a copper pipe.
9, dynamic balance motor-driven variable valve according to claim 3 is characterized in that, described motorized adjustment valve module (2) is a motorized adjustment butterfly valve assembly.
10, dynamic balance motor-driven variable valve according to claim 3 is characterized in that, described valve body can be isodiametric cylindrical shell or the cylindrical shell that becomes diameter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100617905A CN100489701C (en) | 2005-12-02 | 2005-12-02 | Electric valve control method based on high-level feature computation and valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100617905A CN100489701C (en) | 2005-12-02 | 2005-12-02 | Electric valve control method based on high-level feature computation and valve |
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| Publication Number | Publication Date |
|---|---|
| CN1804740A true CN1804740A (en) | 2006-07-19 |
| CN100489701C CN100489701C (en) | 2009-05-20 |
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|---|---|---|---|
| CNB2005100617905A Active CN100489701C (en) | 2005-12-02 | 2005-12-02 | Electric valve control method based on high-level feature computation and valve |
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| CN (1) | CN100489701C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561172B (en) * | 2009-05-26 | 2011-06-08 | 杭州哲达科技股份有限公司 | Control method for energy saving of heating ventilating and air conditioning hydraulic pipe network in transmission and distribution (HVAC) |
| CN102359637A (en) * | 2011-08-13 | 2012-02-22 | 无锡杰尔压缩机有限公司 | Flow measurement and control device of butterfly valve |
| CN111219520A (en) * | 2020-03-13 | 2020-06-02 | 大亚木业（肇庆）有限公司 | PLC-based electric valve control system and use method thereof |
-
2005
- 2005-12-02 CN CNB2005100617905A patent/CN100489701C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561172B (en) * | 2009-05-26 | 2011-06-08 | 杭州哲达科技股份有限公司 | Control method for energy saving of heating ventilating and air conditioning hydraulic pipe network in transmission and distribution (HVAC) |
| CN102359637A (en) * | 2011-08-13 | 2012-02-22 | 无锡杰尔压缩机有限公司 | Flow measurement and control device of butterfly valve |
| CN111219520A (en) * | 2020-03-13 | 2020-06-02 | 大亚木业（肇庆）有限公司 | PLC-based electric valve control system and use method thereof |
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| Publication number | Publication date |
|---|---|
| CN100489701C (en) | 2009-05-20 |
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Assignee: Hangzhou Zhande Software Technology Co., Ltd. Assignor: Shen Xinrong Contract fulfillment period: 2009.6.20 to 2025.12.1 Contract record no.: 2009330002371 Denomination of invention: Electric valve control method based on high-level feature computation and valve Granted publication date: 20090520 License type: Exclusive license Record date: 20090922 |
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