CN201014015Y - Electronic type dynamic balancing electric regulating valve - Google Patents
Electronic type dynamic balancing electric regulating valve Download PDFInfo
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- CN201014015Y CN201014015Y CNU2007201039822U CN200720103982U CN201014015Y CN 201014015 Y CN201014015 Y CN 201014015Y CN U2007201039822 U CNU2007201039822 U CN U2007201039822U CN 200720103982 U CN200720103982 U CN 200720103982U CN 201014015 Y CN201014015 Y CN 201014015Y
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Abstract
The utility model discloses an electron-typed dynamic balancing electric regulating valve, comprising a regulating valve and an electric operator arranged on the upper part of the regulating valve. One end of the regulating valve is provided with a pressure difference transducer which is connected with a pressure difference transmitting instrument by a first pressure tapping tube and a second pressure tapping tube. A flow control driving device is arranged in the electric operator and a standard pressure difference measurement signal output by the pressure difference transmitting instrument and a standard input signal output by other upper level standard controllers are respectively connected with an input end of the flow control driving device. An output end of the flow control driving device is connected with the electric operator and the flow control driving device consists of a flow controller and a standard control driver. The utility model has novel and simple regulating and controlling mode and lower production cost. The structure required by the regulating valve is simple with small passing resistance; therefore, the performance of the electric regulating valve is greatly improved with high flow control precision, high anti-jamming capacity and easy debugging and maintenance.
Description
Technical field
The utility model relates to a kind of electric control valve, specifically is a kind of Electronic-Type Dynamic Balance Electric Control Valve, modulating valve water flow is changed only be subjected to standard input control signal (as the standard temperature input control signal) influence and not influenced by the water system pressure surge.
Background technique
Along with improving constantly of people's living standard requirement and awareness of saving energy, variable flow system occupies more and more important position in the Heating,Ventilating and Air Conditioning (HVAC) engineering.Traditional variable flow system exists general hydraulic misadjustment phenomenon, and on the one hand, the flow of some end-equipment is bigger than normal, and the flow of other end-equipments is less than normal, and the assignment of traffic between the end-equipment is unreasonable, has static hydraulic misadjustment; On the other hand, the adjusting of each end-equipment electric valve can cause the system pressure fluctuation, thereby the flow of other end-equipment is exerted an influence, and the Flow-rate adjustment between the end-equipment can interfere with each other, and has dynamic hydraulic misadjustment.In order to make the Heating,Ventilating and Air Conditioning (HVAC) engineering efficient, stable, comfortable, energy-conservation, just must take certain measure and adopt corresponding hydraulic equilibrium equipment to eliminate this hydraulic misadjustment phenomenon.
Traditional electric control valve can be regulated the flow of end-equipment according to the standard control signal of temperature controller, but when many end-equipments are in parallel, the adjusting of each end-equipment all can cause the system pressure fluctuation, thereby the flow to other end-equipment produces interference, and it can not slacken or shield the dynamic hydraulic misadjustment that causes owing to this interference.
The self-powering type dynamic balance motor-driven modulating valve that uses is with mechanical membrane chip differential pressure balancing valve and the incorporate simple combination of electric control valve at present.Though it can weaken or shield the dynamic hydraulic misadjustment that produces owing to the Flow-rate adjustment between the end-equipment to a certain extent, but because mechanical type pressure containing disk and spring structure complexity in the pressure balance part, component are many and this valve need be imported and exported the motorized adjustment spool pressure are guided to two ends of pressure containing disk by inner aperture or external capillary, thus this valve flow control accuracy is lower, need higher breakout pressure (general minimum be 0.3Bar) could proper functioning, volume is than greatly and the unusual costliness of price.When this valve is applied in the Heating,Ventilating and Air Conditioning (HVAC) engineering, it is very high to water quality requirement, as long as any point is blocked in the inner aperture of pressure or the capillary tube, then its transient equiliblium function is just ineffective, and the forfeiture of this transient equiliblium function is difficult in the scene and is found, detects and keep in repair.
The model utility content
The purpose of this utility model is to overcome deficiency of the prior art, and a kind of have transient equiliblium function (changes in flow rate is influenced by the standard input control signal only and is not subjected to the system pressure influence of fluctuations), highi degree of accuracy, detection and Electronic-Type Dynamic Balance Electric Control Valve easy to maintenance and not high to water quality requirement are provided.
The utility model is realized its purpose by the following technical solutions: a kind of Electronic-Type Dynamic Balance Electric Control Valve comprises modulating valve and the electric actuator that is positioned at modulating valve top; One end of modulating valve is provided with differential pressure pickup, and this differential pressure pickup is connected with pressure Guan Eryu one pressure difference transmitter by pressure pipe one; In electric actuator, be provided with a flow accessory drive, the input end of this flow control drive unit is connected with the standard differential pressure measurement signal of pressure difference transmitter output and the standard input signal of other higher level's standard controller output respectively, and the output terminal of flow control drive unit links to each other with electric actuator.
Described flow control drive unit is made up of flow dontroller and standard controlling and driving device, and the standard main control signal of flow dontroller output terminal output is connected with the input end of standard controlling and driving device.
Described differential pressure pickup adopts pitot tube type, by static pressure impulse pipeline, static pressure experience the hole, total head experiences the hole and total head impulse pipeline is formed; Static pressure impulse pipeline is connected with pressure pipe two, and total head impulse pipeline is connected with pressure pipe one; It is consistent with modulating valve conduit axis direction that total head is experienced the axially bored line direction, and it is vertical with modulating valve conduit axis direction that static pressure is experienced the axially bored line direction.
Described differential pressure pickup also can adopt orifice fitting, and the orifice plate inlet pressure links to each other with pressure pipe one, and the orifice plate outlet pressure links to each other with pressure pipe two.
Owing to adopt technique scheme, the beneficial effect of Electronic-Type Dynamic Balance Electric Control Valve provided by the utility model is: this device is regulated the control mode novelty simply, manufacture cost is lower, the modulating valve structural requirement is simple, circulating resistance is little, by higher controller and flow dontroller modulating valve is carried out the major-minor control in tandem double loop, thereby improve the overall performance of electric control valve significantly, promote the regulation and control quality of modulating valve widely, the flow control accuracy height, antijamming capability is strong, it is very good to regulate stability, simplified the hydraulic equilibrium debugging work of water system simultaneously, realized that veritably moving regulatory function of current collection and dynamic flow equilibrium function are in the highi degree of accuracy of one, Electronic-Type Dynamic Balance Electric Control Valve; And the utility model is not high to water quality requirement, is particularly suitable for the water quality present situation of present domestic Heating,Ventilating and Air Conditioning (HVAC) water system.
Description of drawings
By the following examples and accompanying drawing the utility model Electronic-Type Dynamic Balance Electric Control Valve is further described.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a modulating valve pressure part-structure schematic representation in the utility model.
Fig. 3 is working principle of the present utility model and flow chart.
Fig. 4 is the structural representation of pitot tube type differential pressure pickup in the utility model.
Among the figure: 1. modulating valve, 2. pressure difference transmitter, 3. flow dontroller, 4. standard controlling and driving device, 5. electric actuator, 6. the pressure pipe one, and 7. the pressure pipe two, 8. differential pressure pickup, 9. static pressure impulse pipeline, 10. static pressure is experienced the hole, and 11. total heads are experienced the hole, 12. total head impulse pipelines.
Embodiment
Fig. 1 and Fig. 2 are a kind of Electronic-Type Dynamic Balance Electric Control Valve embodiment's structures, comprise by modulating valve 1 and the electric actuator 5 that is used to realize the motorized adjustment function.Be provided with differential pressure pickup 8 in the ingress of modulating valve 1, this differential pressure pickup 8 also can be located at the outlet port of modulating valve 1; Pressure difference transmitter 2 is connected with differential pressure pickup 8 respectively with pressure pipe 27 by pressure pipe 1; In electric actuator 5, be equiped with the flow control drive unit, the input end of this flow control drive unit is connected with the standard differential pressure measurement signal of pressure difference transmitter 2 outputs and the standard input signal of other higher level's standard controller output respectively, and the output terminal of flow control drive unit is connected with electric actuator 5.Flow control drive unit in the present embodiment is made up of flow dontroller 3 and standard controlling and driving device 4.
Referring to working principle shown in Figure 3 and flow process, the high and low water pressure that pressure pipe 1 and pressure pipe 27 will come from pressure difference sensing device 8 is sent to the pressure input end of pressure difference transmitter 2; The standard differential pressure measurement signal of pressure difference transmitter 2 outputs is connected with the input end of flow dontroller 3 in the flow control drive unit respectively with the standard input signal of other higher level's standard controller output; The standard main control signal of the output terminal output of flow dontroller 3 is connected with the input end of standard controlling and driving device 4; The output terminal of standard controlling and driving device 4 is connected with electric actuator 5.Flow dontroller 3 adopts the PI flow dontroller, also can adopt the pid stream amount controller.
The standard input signal that comes from peripheral control unit is (for air-conditioning system, mainly be the standard temperature control signal) as the input signal setting value of flow dontroller 3, and the pressure of measuring with the differential pressure pickup 8 that comes self-regulating valve 1 ingress in flow dontroller 3 compares through the standard differential pressure measurement signal of pressure difference transmitter 2 outputs, standard control algorithm through PID (proportion integration differentiation), the outputting standard main control signal is regulated the aperture and the water flow of modulating valve to electric actuator standard controlling and driving device 24.The standard control algorithm of flow dontroller also can adopt standard control algorithm or other standard control algorithm of PI (proportional integral).Standard input signal comes from the standard control signal output terminal of other higher level's standard controller (as standard temperature controller, DDC or accommodometer etc.).
Fig. 4 is an embodiment of differential pressure pickup 8 in the utility model, its structure adopts pitot tube type pressure-measuring pipe device, differential pressure pickup 8 is positioned at the modulating valve ingress, its pressure by static pressure impulse pipeline 9, static pressure experience hole 10 (one week of outer tube has a plurality of static pressure to experience the hole), total head experiences hole 11 and total head impulse pipeline 12 is formed; Static pressure impulse pipeline 9 links to each other with pressure pipe 27, and total head impulse pipeline 12 links to each other with pressure pipe 1; Total head is experienced hole 11 axial directions should be consistent with modulating valve conduit axis direction, and static pressure is experienced hole 10 axial directions should be vertical with modulating valve conduit axis direction.
The basic functional principle of the high-precision electronic formula dynamic balance motor-driven modulating valve with transient equiliblium function provided by the utility model is as follows:
The pressure difference signal of being gathered by pressure difference sensing device 8 is transformed into the input end of standard differential pressure measurement signal conveys to flow dontroller 3 by pressure difference transmitter 2, as the input measurement signal.Flow dontroller 3 is a setting value with the standard input signal of peripheral control unit output, is measured value with the standard differential pressure measurement signal that comes from pressure difference transmitter 2:
(1) when the standard input signal of outside higher controller output remains unchanged, be that setting value is when constant, the adjusting parameter value of expression standard input signal control has been in state of equilibrium, and at this moment the flow of modulating valve just keeps the needed flow of this state of equilibrium.At this moment, no matter how system pressure changes within the specific limits, regulating action by the electronic type flow dontroller, can be all the time the flow of modulating valve be maintained the standard input signal Control Parameter and reach the required flow value of state of equilibrium, the basic functional principle of electronic type flow control transient equiliblium function that Here it is.
(2) when the standard input signal of outside higher controller output changes, the adjusting parameter of expression standard input signal control does not also reach state of equilibrium, the flow of modulating valve does not also reach the required flow of state of equilibrium, at this moment the input signal setting value of flow dontroller 3 changes, by the standard control algorithm, the outputting standard main control signal of flow dontroller 3 also changes thereupon, and the aperture of modulating valve and flow change.Till when the actual flow of modulating valve equals to reach the required flow of state of equilibrium.At this moment, the standard input signal Control Parameter reaches state of equilibrium, and standard input signal remains unchanged, and the electronic type flow control reenters (1) described control mode.
Because it is high-precision and tight that the above component that adopt, control procedure and algorithm are, therefore flow control drive unit described in the utility model could be realized the dynamic flow automatic balance function of highi degree of accuracy and high stability.When this Electronic-Type Dynamic Balance Electric Control Valve being installed in the Heating,Ventilating and Air Conditioning (HVAC) water system pipeline, when moving, just can both realize the motorized adjustment function in system, realize the dynamic flow equilibrium function again.
Claims (10)
1. Electronic-Type Dynamic Balance Electric Control Valve is characterized in that: comprise modulating valve (1) and be positioned at the electric actuator (5) on modulating valve (1) top; One end of modulating valve (1) is provided with differential pressure pickup (8), and this differential pressure pickup (8) is connected with a pressure difference transmitter (2) with pressure pipe two (7) by pressure pipe one (6); In electric actuator (5), be provided with a flow accessory drive, the input end of this flow control drive unit is connected with the standard differential pressure measurement signal of pressure difference transmitter (2) output and the standard input signal of other higher level's standard controller output respectively, and the output terminal of flow control drive unit links to each other with electric actuator (5).
2. Electronic-Type Dynamic Balance Electric Control Valve according to claim 1, it is characterized in that: described flow control drive unit is made up of flow dontroller (3) and standard controlling and driving device (4), and the standard main control signal of flow dontroller (3) output terminal output is connected with the input end of standard controlling and driving device (4).
3. Electronic-Type Dynamic Balance Electric Control Valve according to claim 1 and 2, it is characterized in that, described differential pressure pickup (8) adopts pitot tube type, by static pressure impulse pipeline (9), static pressure experience hole (10), total head experiences hole (11) and total head impulse pipeline (12) is formed; Static pressure impulse pipeline (9) is connected with pressure pipe two (7), and total head impulse pipeline (12) is connected with pressure pipe one (6); It is consistent with modulating valve conduit axis direction that total head is experienced hole (11) axial direction, and it is vertical with modulating valve conduit axis direction that static pressure is experienced hole (10) axial direction.
4. Electronic-Type Dynamic Balance Electric Control Valve according to claim 1 and 2 is characterized in that, described differential pressure pickup (8) adopts orifice fitting, and the orifice plate inlet pressure links to each other with pressure pipe one (6), and the orifice plate outlet pressure links to each other with pressure pipe two (7).
5. Electronic-Type Dynamic Balance Electric Control Valve according to claim 1 and 2 is characterized in that, described pressure difference transmitter (2) is installed in the hull outside of electric actuator (5).
6. Electronic-Type Dynamic Balance Electric Control Valve according to claim 1 and 2 is characterized in that, described pressure difference transmitter (2) is installed in the enclosure interior of electric actuator (5).
7. Electronic-Type Dynamic Balance Electric Control Valve according to claim 1 and 2 is characterized in that, described differential pressure pickup (8) is located at the outlet port or the ingress of modulating valve.
8. Electronic-Type Dynamic Balance Electric Control Valve according to claim 2 is characterized in that, described flow dontroller (3) is located at the inside of electric actuator (5).
9. Electronic-Type Dynamic Balance Electric Control Valve according to claim 2 is characterized in that, described flow dontroller (3) is located at the outside of electric actuator (5).
10. Electronic-Type Dynamic Balance Electric Control Valve according to claim 2 is characterized in that, described flow dontroller (3) adopts pid stream amount controller or PI flow dontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201039822U CN201014015Y (en) | 2007-03-27 | 2007-03-27 | Electronic type dynamic balancing electric regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201039822U CN201014015Y (en) | 2007-03-27 | 2007-03-27 | Electronic type dynamic balancing electric regulating valve |
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| CN201014015Y true CN201014015Y (en) | 2008-01-30 |
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| CNU2007201039822U Expired - Fee Related CN201014015Y (en) | 2007-03-27 | 2007-03-27 | Electronic type dynamic balancing electric regulating valve |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907193A (en) * | 2010-07-09 | 2010-12-08 | 鞍山市大孤山阀门厂 | Electric linear-motion electronic wear-resistant lining rubber adjusting valve |
| CN102278510A (en) * | 2011-07-16 | 2011-12-14 | 无锡杰尔压缩机有限公司 | Combined valve for precisely measuring and controlling flow rate |
| CN102287560A (en) * | 2011-08-13 | 2011-12-21 | 无锡杰尔压缩机有限公司 | Device for measuring and controlling flow of rhombic valve |
| CN104790924A (en) * | 2015-03-27 | 2015-07-22 | 中石化重庆涪陵页岩气勘探开发有限公司 | Device and method for remote regulation and control of petroleum and natural gas wellhead yield |
| CN107989899A (en) * | 2017-12-13 | 2018-05-04 | 哈尔滨理工大学 | A kind of pump oil pressure automatic adjustable hydrodynamic journal liquid polymers oil pumping device |
| CN110274043A (en) * | 2019-07-19 | 2019-09-24 | 优刻得科技股份有限公司 | Flow equilibrium device |
-
2007
- 2007-03-27 CN CNU2007201039822U patent/CN201014015Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907193A (en) * | 2010-07-09 | 2010-12-08 | 鞍山市大孤山阀门厂 | Electric linear-motion electronic wear-resistant lining rubber adjusting valve |
| CN102278510A (en) * | 2011-07-16 | 2011-12-14 | 无锡杰尔压缩机有限公司 | Combined valve for precisely measuring and controlling flow rate |
| CN102287560A (en) * | 2011-08-13 | 2011-12-21 | 无锡杰尔压缩机有限公司 | Device for measuring and controlling flow of rhombic valve |
| CN104790924A (en) * | 2015-03-27 | 2015-07-22 | 中石化重庆涪陵页岩气勘探开发有限公司 | Device and method for remote regulation and control of petroleum and natural gas wellhead yield |
| CN107989899A (en) * | 2017-12-13 | 2018-05-04 | 哈尔滨理工大学 | A kind of pump oil pressure automatic adjustable hydrodynamic journal liquid polymers oil pumping device |
| CN110274043A (en) * | 2019-07-19 | 2019-09-24 | 优刻得科技股份有限公司 | Flow equilibrium device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080130 Termination date: 20110327 |