CN102323789A

CN102323789A - Multifunctional hydraulic equilibrium automatic control and regulation device

Info

Publication number: CN102323789A
Application number: CN201110300035A
Authority: CN
Inventors: 张�雄
Original assignee: 张�雄
Current assignee: Shenzhen material Intellectual Technology Co., Ltd.
Priority date: 2011-09-27
Filing date: 2011-09-27
Publication date: 2012-01-18
Anticipated expiration: 2031-09-27
Also published as: CN102323789B

Abstract

The invention relates to a multifunctional hydraulic equilibrium automatic control and regulation device which comprises a control and regulation box, wherein a human-machine interface is arranged on a panel of the control and regulation box, a PLC (Programmable Logic Controller) is arranged in the control and regulation box and is electrically connected with the human-machine interface through a communication interface. The multifunctional hydraulic equilibrium automatic control and regulation device also comprises an analog quantity expander, an analog quantity input output terminal, a switching input output relay set and a switching input output terminal; and the valve opening of an electric valve is automatically controlled by combining with a self-checking operation process and an automatic control and regulation operation process through establishing a communication connection of the human-machine interface and the PLC and defining a port. According to the invention, common heating construction technicists carry out setting and selection on the human-machine interface according to the guidance of care instructions, opening of an electric butterfly valve or an electric regulating valve is automatically controlled and regulated easily after operation parameters of a controlled valve combination are set, low investment cost is realized and wide application demands are met.

Description

The multi-usage hydraulic equilibrium is controlled the accent device automatically

Technical field

The present invention relates to the hydraulic equilibrium technology in the water system, be specifically related to a kind of multi-usage hydraulic equilibrium and control the accent device automatically.

Background technology

In the building that disposes central air conditioner or domestic hot-water; Usually in water system, carry out hydraulically balancedly being divided into two types: what no controller type was used in (1) has static balancing valve or a dynamic balance valve, (2) use controller arranged control electric control valve like DDC or PLC etc.

The former is applied in specific and stationary applica-tions, lacks the extension of parameter association and regulatory function; The latter is applied in integral body or local team control occasion; Need be to the corresponding program of controller write specialized; Use and debugging to different hydraulic equilibriums, coding must be accomplished by the robotization professional, and general heating and ventilation project workmen can't settle a dispute by the parties concerned themselves.

Building to existing central air conditioner system and domestic hot-water's demand; In implementing reducing energy consumption, hydraulic equilibrium regulated be that proportion is very high, wide range, energy-saving effect content clearly; A lot of systems are branch, the water collector of central air conditioner for example; The main riser of each cooling or heating subregion, the changes in temperature water pipe horizontal branch pipe of each floor; Butterfly valve or electric butterfly valve generally only are installed, are regulated, then press common practices and then must change dynamic balance valve or electric control valve if need carry out hydraulic equilibrium; So cause the improvement project cost to rise, construction causes many adverse effects such as for example water pipe change, welding, finishing face destruction, partial cold-supply or heating time-out.For example need carry out the heat recovery energy-saving transformation again in some high-grade star hotels; To there being plural enclosed hot water partition system to carry out in the case of heat recovery application, each hot water subregion must be accomplished the heat recovery balance, then needs electric control valve to carry out the water yield and regulates; As to accomplish that the optimal heat of heat-obtaining reclaims operating mode as required; Original butterfly valve is only realized break-make control, must increase regulatory function and will be replaced by electric control valve, but also will set up a cover automatic control system at present; When investment certainly will be increased the normal business in hotel is caused many negative effects; If it is not enough to run into the construction surface space, and change the variable valve that volume is much bigger more than butterfly valve, cost is higher, the cost of being paid is enough to make that with the influence that causes the owner beats a retreat in the face of difficulties.

Summary of the invention

In order to overcome the deficiency of prior art; The present invention proposes a kind of multi-usage hydraulic equilibrium and control the accent device automatically; It can be through selecting the setting of sensor type, parameter, runtime value on man-machine interface; And operational factor and variablees such as the setting of the open degree stepping ratio of controlled electrically operated valve, valve opening and closing condition, hydraulic equilibrium effect, automatically perform control and debug, realize pipeline temperature difference differential pressure balance purpose thereby reach the flow of regulating pipeline.

In order to achieve the above object, the technical scheme that the present invention adopted is following:

A kind of multi-usage hydraulic equilibrium is controlled the accent device automatically; It comprises control accent case; Control transfers the panel of case to be provided with man-machine interface, and control is transferred in the case and is provided with the PLC controller, and the PLC controller electrically connects through communication interface and man-machine interface; It also comprises analog quantity extender, analog quantity input and output terminal, switching value input and output relay group, switching value input and output terminal; Analog quantity extender and PLC controller electrically connect, and analog quantity input and output terminal and analog quantity extender electrically connect, and the switching value IO port of PLC controller electrically connects through switching value input and output relay group and switching value input and output terminal;

Said analog quantity extender electrically connects through analog quantity input and output terminal and analog sensor, and the type of said analog sensor can be the actuator of temperature sensor, pressure transducer, liquid level sensor, electric control valve etc.;

The keying state of the input terminal detector switch quantity sensor of the input relay group of said switching value input and output relay group through the switching value input and output terminal, the type of said Boolean value output sensor can be the actuators, water flow switch of electric butterfly valve etc.;

A plurality of electrically operated valves electrically connect with switching value input and output terminal corresponding switch amount input and output relay group and/or analog quantity input and output terminal respectively.

Said man-machine interface; (valve opening is pressed full scale 100% and is calculated to be used to be provided with maximal value, intermediate value and the minimum value of the valve opening of controlled electrically operated valve; Maximal value can be 100% or 90%, and intermediate value can be 72% or 52%, and minimum value can be 0% or 10%); The corresponding relation of switching value input and output terminal and Boolean value output sensor is set; The corresponding relation of analog quantity input and output terminal and analog sensor is set, be provided with controlled electrically operated valve respectively with the incidence relation of Boolean value output sensor and analog sensor, startup value and the end value of single analog sensor is set, and (the startup value can be 52 ℃; End value can be 57 ℃ etc.); Two setting differences (set difference and can be 5 ℃ or-3 ℃ etc.) between the analog sensor of the same type are set, and controlled electrically operated valve is set open control rank (limit priority H, lowest priority L etc.);

Said PLC controller is used to receive the signalization of man-machine interface, detects the opening and closing time of controlled electrically operated valve automatically and calculates the valve opening controlled variable; Get into control allocation and transportation row flow process automatically: the signal that receives analog sensor; The signal of receiving key quantity sensor is according to the signal of the signal of analog sensor and Boolean value output sensor and utilize the valve opening controlled variable that the aperture of controlled electrically operated valve is regulated and control;

Said automatic control allocation and transportation row flow process comprises:

Beginning is control allocation and transportation row flow process automatically; Detect and the state of controlled electrically operated valve associated switch quantity sensor and the measured value of single analog sensor; If with the state of controlled electrically operated valve associated switch quantity sensor for connecting and the measured value of single analog sensor is worth less than startup, then to a; If with the state of controlled electrically operated valve associated switch quantity sensor for breaking off and the measured value of single analog sensor is worth greater than startup, then finish control allocation and transportation row flow process automatically;

Whether the valve opening that a. detects controlled electrically operated valve is greater than intermediate value, if greater than intermediate value, then to feedback node one; If less than intermediate value, the valve opening that then increases controlled electrically operated valve is to intermediate value, to feedback node one; (having or not thermal source all can move)

Feedback node one: the control rank that opens as if a plurality of controlled electrically operated valves equates, then to feedback node two; It is unequal to control rank as if opening of a plurality of controlled electrically operated valves; Judge and open the highest-ranking electrically operated valve of control in a plurality of controlled electrically operated valves; Opening the highest-ranking electrically operated valve of control is H level electrically operated valve; H level electrically operated valve is preferentially opened control, the measured value of the single analog sensor related with H level electrically operated valve is reached greater than the startup value the soonest;

If the measured value of the single analog sensor related with H level electrically operated valve is worth less than startup, then return feedback node one; If the measured value of the single analog sensor related with H level electrically operated valve is worth greater than startup, then to feedback node two;

Feedback node two: the measured value of judging the single analog sensor related with controlled electrically operated valve;

If the measured value of the single analog sensor related with controlled electrically operated valve is worth less than startup, then return feedback node two after N minute through time-delay; If the measured value of the single analog sensor related with controlled electrically operated valve is worth greater than startup, then to feedback node three;

Feedback node three: the measurement difference that detects two the of the same type analog sensors related with controlled electrically operated valve;

If the measurement difference of two the of the same type analog sensors related with controlled electrically operated valve is greater than setting difference, the valve opening of controlled electrically operated valve is regulated and control to maximal value is back to feedback node three; If the measurement difference of two the of the same type analog sensors related with controlled electrically operated valve is less than or equal to the setting difference, reduce the valve opening of controlled electrically operated valve, to feedback node four;

Feedback node four: the measurement difference that detects two the of the same type analog sensors related once more with controlled electrically operated valve;

If the measurement difference of two the of the same type analog sensors related with controlled electrically operated valve increases the valve opening of controlled electrically operated valve, to feedback node three greater than setting difference; If the measurement difference of two the of the same type analog sensors related with controlled electrically operated valve is less than or equal to the setting difference, then to feedback node five;

Feedback node five: detect and the state of controlled electrically operated valve associated switch quantity sensor and the measured value of single analog sensor;

If with the state of controlled electrically operated valve associated switch quantity sensor for connect and the measured value of single analog sensor less than end value, then to b; If with the state of controlled electrically operated valve associated switch quantity sensor for break off and the measured value of single analog sensor greater than end value, then to c;

B. detect the measurement difference of two analog sensors of the same type related once more with controlled electrically operated valve; If the measurement difference of two the of the same type analog sensors related with controlled electrically operated valve is greater than setting difference; Then return feedback node four; If the measurement difference of two the of the same type analog sensors related with controlled electrically operated valve then reduces the valve opening of controlled electrically operated valve less than setting difference; After the valve opening of controlled electrically operated valve is reduced; Detect the measurement difference of two the of the same type analog sensors related once more with controlled electrically operated valve; If the measurement difference of two the of the same type analog sensors related with controlled electrically operated valve is greater than setting difference; Then return feedback node four, if the measurement difference of two the of the same type analog sensors related with controlled electrically operated valve then detects and the state of controlled electrically operated valve associated switch quantity sensor and the measured value of single analog sensor less than setting difference once more; If with the state of controlled electrically operated valve associated switch quantity sensor for connect and the measured value of single analog sensor less than end value; Then return feedback node five, if with the state of controlled electrically operated valve associated switch quantity sensor for break off and the measured value of single analog sensor greater than end value, whether the valve opening that then detects controlled electrically operated valve is minimum value; If minimum value; Then finish control allocation and transportation row flow process automatically, if not minimum value, then to feedback node six;

C. continuation detects whether the valve opening of controlled electrically operated valve is minimum value, if minimum value then finishes control automatically and allocates and transports the row flow process; If not minimum value, then the valve opening control of controlled electrically operated valve is transferred to minimum value after, return feedback node five;

Feedback node six: the measurement difference that detects two the of the same type analog sensors related with controlled electrically operated valve;

If the measurement difference of two the of the same type analog sensors related with controlled electrically operated valve is then returned feedback node three greater than setting difference;

If the measurement difference of two the of the same type analog sensors related with controlled electrically operated valve is less than setting difference, whether the valve opening that continues the controlled electrically operated valve of detection is minimum value, if minimum value, then to d; If not minimum value is then returned feedback node five;

D. detect and the state of controlled electrically operated valve associated switch quantity sensor and the measured value of single analog sensor; If with the state of controlled electrically operated valve associated switch quantity sensor for break off and the measured value of single analog sensor greater than end value, then finish control allocation and transportation row flow process automatically; If with the state of controlled electrically operated valve associated switch quantity sensor for connect and the measured value of single analog sensor less than end value, after then delaying time M minute, return feedback node six;

Wherein, M, N are the natural number greater than zero.

Preferably; In man-machine interface is provided with; Setting difference between two analog sensors of the same type is set to positive relationship or inverse relationship, and the valve opening of controlled electrically operated valve changes according to the positive relationship or the inverse relationship of the setting difference between two analog sensors of the same type that are associated.

Preferably, said electrically operated valve comprises electric butterfly valve and/or electric control valve, and the actuator of electric butterfly valve and switching value input and output terminal electrically connect, and the actuator of electric control valve and analog quantity input and output terminal electrically connect.

Calculate the valve opening controlled variable of electric butterfly valve: detect valve opening and spend to the working time of 90 degree from 0; And the female number that is defined as controlled electrically operated valve unlatching required pulse width this working time; Then divided by after the stepping ratio, draw in what the stepping ratio was opened and open the control pulse width; Detect the working time of valve opening, and close female number of required pulse width,, draw in what the stepping ratio was closed and open the control pulse width then divided by after the stepping ratio being defined as controlled electrically operated valve this working time from 90 degree to 0 degree.Valve opening to electric butterfly valve is controlled: the PLC controller is according to 1% or 5% or 10% stepping ratio and open the output of control pulse width and open or close pulse voltage, adds up through the number of times of opening or closing pulse voltage, increases or reduce valve opening.

Calculate the valve opening controlled variable of electric control valve: voltage or current value when the detection valve is opened into maximum position by zero aperture, and then divided by after the stepping ratio, draw in opening of stepping ratio unlatching and control voltage or current value; Voltage or current value when detecting valve and closing to zero aperture by maximum position, and then divided by after the stepping ratio draw in what the stepping ratio was closed and open control voltage or current value.Valve opening to electric control valve is controlled: the PLC controller is according to 1% or 5% or 10% stepping ratio and open control voltage or current value, and voltage or current value that output is corresponding increase or reduce valve opening.

Preferably, this multi-usage hydraulic equilibrium is controlled automatically and is transferred device also to comprise temperature transmitter, and said temperature transmitter and analog quantity extender electrically connect.When the sensor related with controlled electrically operated valve is thermoelectricity occasionally during thermal resistance, just need be connected with the analog quantity extender through temperature transmitter.

Preferably, operation for ease, said man-machine interface is a liquid crystal touch screen.

Preferably; Debugging for ease; Remote cruising, this multi-usage hydraulic equilibrium are controlled automatically and are transferred device also to comprise digital display board, and said digital display board is positioned to control on the panel of transferring case and with the PLC controller and electrically connects; Digital display panel used in the operational factor that shows controlled electrically operated valve, said operational factor comprises stepping ratio and valve opening.

Preferably; In order to regulate the aperture of controlled electrically operated valve manually; This multi-usage hydraulic equilibrium is controlled automatically and is transferred device also to comprise hand push button; Said hand push button is positioned to control on the panel of transferring case and with the PLC controller and electrically connects, and hand push button is used for the aperture of the controlled electrically operated valve of manual adjustments.

The present invention compared with prior art; Its beneficial effect is: adapt to different application requirements, different use occasions, different waterpower configurations; The different sensor type by the guide of common warm construction technical staff according to operation instruction, is provided with on man-machine interface and selects; After ratio is advanced in parameter area, operation variable, control mode transfer formula, the control pacing of setting controlled valve combination; Easily realize that control automatically transfers the open and close degree of electronic dish valve or variable valve, when obtaining best hydraulic equilibrium effect, realizes the satisfied simultaneously application demand widely of cheap cost of investment.

Description of drawings

Fig. 1 is controlled the system block diagram of transferring device automatically for the multi-usage hydraulic equilibrium of the embodiment of the invention;

Fig. 2 is controlled the PLC controller of accent device and the port definition line graph of analog quantity extender automatically for the multi-usage hydraulic equilibrium of the embodiment of the invention;

Fig. 3 is the A part enlarged diagram of Fig. 2;

Fig. 4 is the B part enlarged diagram of Fig. 2;

Fig. 5 is controlled the signal input and output synoptic diagram of transferring device automatically for the multi-usage hydraulic equilibrium of the embodiment of the invention;

Fig. 6 is controlled the wiring diagram of the switching value input and output relay group of transferring device automatically for the multi-usage hydraulic equilibrium of the embodiment of the invention;

Fig. 7 is the C part enlarged diagram of Fig. 6;

Fig. 8 is the D part enlarged diagram of Fig. 6;

Fig. 9 is controlled automatically for the multi-usage hydraulic equilibrium of the embodiment of the invention and is transferred the automatic control of device to transfer the block scheme of flow process;

Figure 10 is controlled the process flow diagram of the self check computing flow process of transferring device automatically for the multi-usage hydraulic equilibrium of the embodiment of the invention;

Figure 11 is controlled the process flow diagram of the pulse control allocation and transportation row flow process of transferring device automatically for the multi-usage hydraulic equilibrium of the embodiment of the invention;

Figure 12 is the E part enlarged diagram of Figure 11;

Figure 13 is the F part enlarged diagram of Figure 11;

Figure 14 is the G part enlarged diagram of Figure 11;

Figure 15 is the H part enlarged diagram of Figure 11;

Figure 16 is controlled the synoptic diagram of the application case one of transferring device automatically for the multi-usage hydraulic equilibrium of the embodiment of the invention;

Figure 17 is controlled the synoptic diagram of the application case two of transferring device automatically for the multi-usage hydraulic equilibrium of the embodiment of the invention;

Figure 18 is controlled the synoptic diagram of the application case three of transferring device automatically for the multi-usage hydraulic equilibrium of the embodiment of the invention.

Embodiment

Below, in conjunction with accompanying drawing and embodiment, multi-usage hydraulic equilibrium of the present invention controlled automatically transfer device to do to further describe, so that clearerly understand the present invention's technological thought required for protection.

As shown in Figure 1; A kind of multi-usage hydraulic equilibrium is controlled the accent device automatically; It comprises control accent case 1; Control transfers the panel of case 1 to be provided with liquid crystal touch screen 6, digital display board 7, panel leds 8, hand push button 9, and control is transferred in the case 1 and is provided with PLC controller 2, analog quantity extender 3, analog quantity input and output terminal 12, switching value input and output relay group 10, switching value input and output terminal 11, stabilized voltage supply 5, temperature transmitter 4, AC220V input terminal 13.PLC controller 2 electrically connects through a RS-485 communication interface and liquid crystal touch screen 6; Analog quantity extender 3 electrically connects with PLC controller 2; Analog quantity input and output terminal 12 electrically connects with analog quantity extender 3, and the switching value IO port of PLC controller 2 electrically connects through switching value input and output relay group 10 and switching value input and output terminal 11.Said temperature transmitter 4 electrically connects with analog quantity extender 3.The connected mode of stabilized voltage supply 5 and AC220V input terminal 13 and function are identical with prior art.

Said hand push button 9 electrically connects with PLC controller 2, and hand push button 9 is used for the aperture of the controlled electrically operated valve of manual adjustments.Said digital display board 7 is positioned to control on the panel of transferring case and with PLC controller 2 and electrically connects, and digital display board 7 is used to show the operational factor of controlled electrically operated valve, and said operational factor comprises stepping ratio and valve opening.Panel leds 8 is connected with PLC controller 2 through switching value input and output relay group 10, and panel leds 8 is used to indicate the duty of controlled electrically operated valve.

The type selecting and the parameter configuration of present embodiment PLC controller 2 and analog quantity extender 3; Consider reliability and compatibility and cost performance three's balance; PLC controller 2 is selected the CPU226 module of Siemens's 200 series for use, and this module has 16 switching value Do output terminals, 24 switching value Di input ends; 4 1ms, 16 10ms, 236 100ms counters; 24V relay output mode; 2 RS-485 interfaces; Allow to be with 7 I/O expansion modules; Maximum website number is 126, can satisfy the demand of present embodiment switch amount port fully.

Analog quantity extender 3 is selected the EM235 (4Ai 1Ao) of Siemens for use; Totally three, add up to 12 Ai and 3 Ao, just can satisfy the demand of present embodiment to the analog quantity port; If in the practical application; Run into the sensor that the temperature sensor non-integral related with controlled electrically operated valve carries transmitter, but thermoelectricity thermal resistance type sensors such as (PT100) occasionally, then can be through increasing temperature transmitter 4; Realize that data change the curtage variable into by the resistance variable, the RMT (J/K) that temperature transmitter 4 can be selected Schneider for use and RMP T.0 ~ T3 is configured.

The type selecting of liquid crystal touch screen 6, this is to realize the very important link of present embodiment, 1. sets up the needed program of good man computer interface; 2. communication protocol that can compatible Siemens PLC C controller CPU 226; 3. satisfy than high performance-price ratio and have operability demand preferably.Therefore the liquid crystal touch screen 6 in the present embodiment has been selected the prestige synthetic fibre MT6056i touch-screen that Taiwan company produces for use; Colour is that 65536 looks, resolution are 320*234,4 line resistance touch-controls, penetrability>80%; Can compatible Siemens 200 Series P PI/PMI communication protocols (being furnished with special telecommunication cable), support USB2.0 to download line, processor is 32Bit RISC 400MHz; 64 MB DDR2 internal memories, the 128MB flash memory.

The making of case 1 is transferred in the control of present embodiment: all components and parts that digital display board 7 three tunnel shows all are arranged on the wiring board; Form a whole; The control that is installed in present embodiment is transferred under the panel front of case 1; Liquid crystal touch screen 6 is installed in control and transfers directly over the front of case 1, and panel leds 8 is installed in the positive centre position that case 1 is transferred in control with hand push button 9.

Control transfers case 1 interior PLC controller 2 and analog quantity extender 3 to be installed in the centre position of box house.The port definition of PLC controller 2 and analog quantity extender 3 sees accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 5, table 1 and table 2 for details with being connected.Wherein, table 1 is the port definition of CPU226, and table 2 is the port definition of EM235 (4AI-AO).

Table 1:

Figure 2011103000353100002DEST_PATH_IMAGE001

Table 2:

In above-mentioned two tables, V1, V2, V3 refer to controlled electrically operated valve respectively, and 1#, 2#, 3# refer to controlled electrically operated valve combination corresponding switch quantity sensor respectively.

Control transfers the switching value input and output relay group 10 in the case 1 can arrange the following square guide rail that is installed in PLC controller 2 respectively in order, and the model of relay requires to see accompanying drawing 6, accompanying drawing 7 and accompanying drawing 8 for details with concrete wiring.The switching value input and output relay group 10 of present embodiment comprises relay K A1 ~ KA23; Wherein, Relay K A1 ~ KA21 is connected with output terminal, the input end of corresponding switching value input and output terminal 11 respectively, and makes the pilot lamp of corresponding panel leds 8 light or extinguish; Relay K A22 ~ KA23 can make expanded function and use as reserving input.

Said liquid crystal touch screen 6; Be used to be provided with the initial setting up flow process, (valve opening is pressed full scale 100% and is calculated, and maximal value can be 100% or 90% promptly to be used to be provided with maximal value, intermediate value and the minimum value of the valve opening of controlled electrically operated valve; Intermediate value can be 72% or 52%; Minimum value can be 0% or 10%), the corresponding relation of switching value input and output terminal 11 and Boolean value output sensor is set, the corresponding relation of analog quantity input and output terminal 12 and analog sensor is set; Be provided with controlled electrically operated valve respectively with the incidence relation of Boolean value output sensor and analog sensor; Startup value and the end value (the startup value can be 52 ℃, and end value can be 57 ℃ etc.) of single analog sensor are set, two setting differences (set difference and can be 5 ℃ or-3 ℃ etc.) between the analog sensor of the same type are set; And be provided with controlled electrically operated valve open the control rank (limit priority H, lowest priority L etc.).

Concrete; As shown in Figure 9; The initial setting up flow process comprise PLC controller 2 establish a communications link port definition (be controlled electrically operated valve respectively with the incidence relation of Boolean value output sensor and analog sensor, see table 1, table 2 for details), flow process one is set and flow process two is set.

Flow process one is set: to the setting of electrically operated valve, Boolean value output sensor and the analog sensor of three groups of controlled electrically operated valves combinations, the electrically operated valve combination is meant the relation between electrically operated valve, Boolean value output sensor and the analog sensor three.The digital quantity of three groups of controlled electrically operated valves and the definition of analog quantity I/O mouth; Three Boolean value output sensor port definitions of three groups of controlled electrically operated valve combinations; Nine analog sensor port definitions of three groups of controlled electrically operated valve combinations; Thermal source demand I/O mouth and the definition of external input port sum counter; The electrically operated valve V1 priority level of controlled valve sets unification, control mode transfer formula, control pacing advance that ratio, control are transferred pulsewidth ratio, controlled signal, generation internalized prohibition, carry out internalized prohibition, set intermediate value, set maximal value, set minimum value, the operation of no thermal source is selected, the PID selection of analog quantity control timing; The selection of the Boolean value output sensor Sd1 of electrically operated valve combination one and open the control rank and select, the selection of Boolean value output sensor Sd1 and close rank and select; The replacement of the analog sensor Sa1 of electrically operated valve combination one is selected, is opened the control rank and selects, closes that rank selection, type selecting, measurement range selection, parameter are selected, modified value is selected, the startup value is selected, end value is selected, allow variate-value to select; The replacement selection of the analog sensor Sa2 of electrically operated valve combination one, type selecting, measurement range selection, parameter are selected, modified value is selected; The replacement selection of the analog sensor Sa3 of electrically operated valve combination one, type selecting, measurement range selection, parameter are selected, modified value is selected; Analog sensor difference (Sa2-Sa3) is selected, the difference change direction is selected, difference is set, difference allows specification of variables;

Because electrically operated valve V2, Boolean value output sensor Sd2, the analog sensor Sa4 ~ Sa6 of electrically operated valve combination two; And electrically operated valve V3, Boolean value output sensor Sd3, the analog sensor Sa7 ~ Sa9 of electrically operated valve combination three; Make up one identically with electrically operated valve, therefore, its setting is also identical with chosen content.

Flow process two is set: control is transferred output-controlled inside of device thermal source and outside and is forbidden and force being provided with.Thermal source one demand output Do7, thermal source two demands output Do8 receive V1 to open the control selection; Thermal source one demand output Do7, thermal source two demands output Do8 receive V2 to open the control selection; Thermal source one demand output Do7, thermal source two demands output Do8 receive V3 to open the control selection; Thermal source one demand output Do7, thermal source two demands output Do8 receive outside Di16 input to open the control selection; Controlled electrically operated valve V1 ~ V3 is selected by outside Di19 input inhibit; Controlled valve V2 receives outside Di21 input to force to open the control selection; Controlled valve V3 receives outside Di22 input to force to open the control selection.

Said PLC controller 2 is used to receive the signalization of liquid crystal touch screen 6; Operation self check computing flow process detects the opening and closing time of controlled electrically operated valve automatically and calculates the valve opening controlled variable; Operation is control allocation and transportation row flow process automatically: the signal that receives analog sensor; The signal of receiving key quantity sensor is according to the signal of the signal of analog sensor and Boolean value output sensor and utilize the valve opening controlled variable that the aperture of controlled electrically operated valve is regulated and control.

Said analog quantity extender 3 electrically connects through analog quantity input and output terminal 12 and analog sensor, and the type of said analog sensor 3 can be the actuator of temperature sensor, pressure transducer, liquid level sensor, electric control valve;

The input relay group of said switching value input and output relay group 10 is through the keying state of the input terminal detector switch quantity sensor of switching value input and output terminal 11, and the type of said Boolean value output sensor can be the actuator output dry contact and the water flow switch sensor dry contact of electric butterfly valve;

The quantity of the electrically operated valve of present embodiment is three; Said electrically operated valve comprises electric butterfly valve and/or electric control valve; The actuator of electric butterfly valve and switching value input and output terminal 11 with and pairing input and output relay group electrically connect the actuator of electric control valve and 12 electric connections of analog quantity input and output terminal.

Concrete, above-mentioned self check computing flow process comprises:

More specifically; Self check computing flow process is programmed in the PLC controller 2; Its operation result be for the back automatically control allocation and transportation row flow process crucial data support is provided, and go being connected of flow process for the front initial setting up flow process and the automatic control allocation and transportation of back the accurate data support be provided.

Because the electrically operated valve opening and closing time of different model different size just there are differences itself; Even the electrically operated valve of same size and actuator also conforming difference can occur; In different water route application systems; The difference of electric valve actuator torsion characteristic is especially obvious, is directly connected to judge that electrically operated valve reaches the position and closes the time error that puts in place.Therefore, the position of reaching of electrically operated valve should be as the criterion with the time of in real system, surveying with closing the time that puts in place, particularly realizes controlling the operational mode of transferring valve opening with open and close pulse width accumulative total.So automatic detection calculations is all carried out to the switching pulse of controlled electrically operated valve in each energising back (comprise the outage in the middle of the operation send again), guarantee to obtain that controlled valve is opened accurately or cycle shut-in time.

In conjunction with Fig. 9 and shown in Figure 10, be example (the self check computing flow process of electrically operated valve V2, electrically operated valve V3 is identical with electrically operated valve V1) with electrically operated valve V1, self check computing flow process realizes as follows:

The self check flow process of three groups of electrically operated valves is paired runnings, at first is to judge to be set to which kind of control mode transfer formula, if controlled electrically operated valve V1 control mode transfer formula is chosen as pulse control mode transfer formula, then moves pulse self check flow process:

(1) output of the Do1 port of PLC controller 2 makes relay K A1 closed; Energized is opened electrically operated valve and is put in place; Make relay K A9 closed after touching the limit switch of electrically operated valve; Make and reach the Di2 port of a signal feedback, accomplish the action that electrically operated valve is opened fully, close with the opening time ready for the subsequent calculations electrically operated valve is actual to PLC controller 2;

(2) then launch PLC controller 2 internal counters preparation calculating electrically operated valve and close to the omnidistance time T cl that puts in place by reaching the position; The output of the Do2 port of PLC controller 2 makes relay K A2 closed then; Energized electrically operated valve after reach the position and close to the pass and put in place; Through the spacing contact-making switch of the other end of electrically operated valve that relay K A10 is closed; Making and close the Di3 port that the signal feedback that puts in place arrives PLC controller 2, issue instructions to the time that Di3 receives feedback from Do2 under the t20 counter records, is exactly the shut-in time Tcl of this electrically operated valve under this actual water route operating mode;

(3) same principle is launched counter and is calculated electrically operated valve and put in place open to the omnidistance opening time Top that reaches the position by the pass;

(4) then program with shut-in time Tcl and opening time Top respectively divided by the stepping ratio that has been set up (1% or 5% or 10%), be multiplied by the time cycle that obtains unbalanced pulse ripple (high level) respectively behind 5% the coefficient in advance and close pulsating wave (high level) again:

Unlatching step-by-step impulse (high level)=Top ÷ stepping ratio * 105% (unit=s)

Close step-by-step impulse (high level)=Tcl ÷ stepping ratio * 105% (unit=s)

(5) opening step-by-step impulse (high level) and closing after step-by-step impulse (high level) multiply by the pulsewidth multiple of setting; The time cycle that obtains opening step-by-step impulse (low level) respectively and close step-by-step impulse (low level), open step-by-step impulse (high level)+unlatching step-by-step impulse (low level)=complete unlatching step-by-step impulse; Close the step-by-step impulse of step-by-step impulse (high level)+close step-by-step impulse (low level)=complete;

After above-mentioned self check computing flow process is accomplished; Just obtain complete opening and closing step-by-step impulse waveform; Controlled exactly electric butterfly valve is positioned at the place system; The pulse voltage waveform is transferred in actual control based under the stepping ratio that is set up, and allocation and transportation row flow process is controlled in the pulse of back automatically just can call the aperture that this pulsating wave (opening the control pulse width) removes to control the controlled electrically operated valve of accent.(electrically operated valve V2 ~ V3 carries out the self check computing by same principle)

Calculate the valve opening controlled variable of electric control valve: voltage or current value when the detection valve is opened into maximum position by zero aperture, and then divided by after the stepping ratio, draw in opening of stepping ratio unlatching and control voltage or current value; Voltage or current value when detecting valve and closing to zero aperture by maximum position, and then divided by after the stepping ratio draw in what the stepping ratio was closed and open control voltage or current value.Valve opening to electric control valve is controlled: the PLC controller is according to 1% or 5% or 10% stepping ratio and open control voltage or current value, and voltage or current value that output is corresponding increase or reduce valve opening.If it is analog quantity control mode transfer formula that promptly controlled electrically operated valve V1 control mode transfer formula is selected, then move analog quantity self check flow process:

(1) transferring parameter according to the selection of configuration control of controlled electrically operated valve is voltage or current type;

(2) transfer voltage or electric current (being 10v or 20ma to the maximum) to make controlled electrically operated valve aperture through the output port Ao1 output control of analog quantity extender 3 to maximal value;

(3), detect controlled electrically operated valve actual feedback voltage numerical value Vmax or current values Amax through the Ai10 port of analog quantity extender 3;

(4) output voltage of the Ao1 port of control analog quantity extender 3 or electric current are that 0 v or 0 ma make that controlled electrically operated valve aperture is zero;

(5), detect controlled electrically operated valve actual feedback voltage value Vmin or current value Amin through the Ai10 port of analog quantity extender 3;

(6) PLC controller 2 calculates analog quantity control pacing and advances the ÷ stepping ratio of voltage=(Vmax-Vmin), or calculates analog quantity control pacing and advance the ÷ stepping ratio of electric current=(Amax-Amin).

It is that this controlled motorized adjustment control valve V1 is positioned at the place system that the above-mentioned control that obtains transfers magnitude of voltage or control to transfer current value; Based on actual open and close stepped voltage or the current value under the stepping ratio value that is set up, the analog quantity of back is controlled allocation and transportation row flow process automatically just can call the aperture (electrically operated valve V2 ~ V3 carries out the self check computing by same principle) that this voltage or current value remove to control the controlled electrically operated valve of accent.

Therefore, the valve opening controlled variable comprises opening and closing step-by-step impulse waveform (opening the control pulse width), and control transfers magnitude of voltage or control to transfer current value (opening control voltage or current value).

Automatically control allocation and transportation row flow process is programmed in 2 li of PLC controllers; And be divided into pulse and control automatically that allocation and transportation row flow process p, analog quantity are controlled allocation and transportation row flow process a automatically, switching value is controlled allocation and transportation row flow process s automatically; Wherein pulse is controlled allocation and transportation row flow process automatically and is designed to the core carrier flow process, and analog quantity is controlled allocation and transportation row flow process automatically and all can be cut by the commentaries on classics of core carrier process Selection decision node with the switching value automatic control flow chart and be connected.

Extremely shown in Figure 15 in conjunction with Fig. 9; When the control mode transfer formula that flow process electrically operated valve V1 initially is set is selected as [p] (being that allocation and transportation row flow process is controlled in pulse automatically); Self check computing flow performing pulse self check flow process; Automatically calculate the time cycle of opening and closing step-by-step impulse, the 5th decision node of controlling allocation and transportation row flow process automatically in pulse gets into selected [p] step of establishing (auspicious see accompanying drawing 12);

When the control mode transfer formula that flow process electrically operated valve V1 initially is set is selected as [a] (being that analog quantity is controlled allocation and transportation row flow process automatically); Self check computing flow performing analog quantity self check flow process; Automatically calculate and open stepped voltage or current value; The 3rd decision node in pulse control allocation and transportation row flow process is just switched to [a] step that has been set up by commentaries on classics, carries out analog quantity and controls allocation and transportation row flow process automatically;

When the control mode transfer formula that flow process electrically operated valve V1 initially is set is selected as [s] (being that switching value is controlled allocation and transportation row flow process automatically); Need not to move self check computing flow process (because switching mode only reaches position and the pass two kinds of simple operating modes that put in place); Automatically control allocation and transportation row flow process in pulse and just switched to [s] step that has been set up, carry out switching value and control operational scheme automatically by commentaries on classics in the 4th decision node.

Shown in figure 12, control allocation and transportation calculation flow process begins automatically, and whether the valve opening that detects controlled electrically operated valve is greater than intermediate value, if greater than intermediate value, then to feedback node one; If less than intermediate value, the valve opening that then increases controlled electrically operated valve is to intermediate value, to feedback node one.(having or not thermal source all can move)

Extremely shown in Figure 15 in conjunction with Fig. 9 and Figure 11; Calculating flow process with the pulse control allocation and transportation of electrically operated valve V1 is example (it is identical with electrically operated valve V1 that flow process is calculated in the pulse control allocation and transportation of electrically operated valve V2, electrically operated valve V3); The pulse control allocation and transportation row flow process of present embodiment is provided with six feedback nodes altogether, is respectively:

1. priority level guarantee-feedback (feedback node one): realize in three groups of controlled electrically operated valves, guarantee highest-ranking the acquisition preferentially, realize having levels, divide weight, take care of yourself three-dimensional control allocation and transportation row a little;

In three groups of controlled electrically operated valves, there is one group to be provided with priority H; Then flow process let the electrically operated valve of this group obtain preferentially to open control and make corresponding simulating quantity sensor San (n=1 or=4 or=7) measured value satisfy as early as possible startup value (measured value of analog sensor San < the startup value could start), have only measured value as analog sensor San>the balance control that just can get into the back of startup value allocates and transports and goes;

As that group analog sensor that is provided with priority does not also satisfy the measured value of analog sensor San>the startup value; Just continuing to feed back to feedback node one judges from newly beginning to detect; Wait until that always the electrically operated valve of this priority satisfies the measured value of analog sensor San>after the startup value; This group valve just can be got back to feedback node two, continues the balance control allocation and transportation row of back;

As do not have the priority setting and then directly come and feed back to node two, the balance control accent link of operation back.

2. data acquisition hysteresis-feedback (feedback node two): according to water system temperature or pressure or liquid level data transmits and there are the characteristics that lag behind in data acquisition, avoid causing consequent false concussion and fluctuation, ensure the smooth compliance of control allocation and transportation row;

Characteristic to water system temperature or pressure or liquid level sensor data transmission existence hysteresis; When the measured value that detects analog sensor San does not also reach>during the startup value; Through feeding back to node two again after the time-delay of introducing 10 minutes (can be provided with arbitrarily); Continue to detect the measured value of analog sensor San, in case really satisfy the measured value of analog sensor San>the startup value, just allow to get into next balance control allocation and transportation row link.

3. heat demand increases adaptation-feedback (feedback node three) fast: effectively reduce the very fast fluctuation that is produced that increases by a relatively large margin of loading, provide less than the level and smooth control of load variations amplitude and transfer curve and water route counterbalance effect;

Cause the thermal load demand to increase considerably when hot-water heating system occurring because of the reason that rate of water make-up increases, the measurement difference Sax-Say (x=2,5,8 of actual measurement analog sensor; When y=3,6,9) (temperature difference differential pressure or liquid level difference) is greater than the equilibrium condition that is provided with (balance judges one); Controlled electrically operated valve aperture is controlled to be fed back into feedback node three after transferring to maximum again, continues to detect to judge whether to satisfy equilibrium condition (electrically operated valve aperture change be set to become positive relationship with the analog sensor difference);

After the measurement difference Sax-Say of actual measurement analog sensor is less than or equal to the equilibrium condition of setting (balance judges two); Detect judgement equilibrium condition (balance judges two) once more through feedback node four after beginning to reduce the operation of electrically operated valve aperture; After then must opening the electrically operated valve aperture, turn back to feedback node three cycle detection judgement again, control allocation and transportation row link if be less than or equal to equilibrium condition then carry out the next one through feedback node five by stepping greater than equilibrium condition;

Even run at the back; In case when detecting the measurement difference Sax-Say of analog sensor and departing from equilibrium condition; Also get back to feedback node three; Judge from the detection of newly carrying out equilibrium condition, prevent that the heat demand that increases suddenly is left in the basket or judges the circulation repeatedly that causes causing false termination or produce the band defective by accident.

This feedback element is through the flow process between feedback node three and the feedback node four; The centre is provided with two balances and judges link (balance judges one and two); Can realize that controlled electrically operated valve is based on the equilibrium condition that sets; Carry out the circulation that the aperture size is regulated and control according to the step value of setting, after satisfying equilibrium condition, get into next procedure links again.

4. heat demand decrescence adapts to-feeds back (feedback node four): guarantee effectively to follow because of the thermal load demand reduces or increase gradually the variation that is produced gradually and control the aperture of transferring electrically operated valve, ensure control accent curve and water route counterbalance effect stably stably;

When the measured value of state that detects Boolean value output sensor Sdn (n=1,2,3) and analog sensor San (n=1,4,7) does not reach the condition that finishes control allocation and transportation row (finish to judge one: the measured value of Boolean value output sensor Sdn=off and analog sensor Sa end value; Wherein, Off is an off-state; On is an on-state); Rerun detect judge analog sensor Sax-Say the measurement difference whether less than equilibrium condition (balance judges three), then do not get back to feedback node four again as not satisfying, carry out the double check judgement of equilibrium condition and termination condition again.As satisfied equilibrium condition, then turn down the link of controlled electrically operated valve aperture by the stepping setting;

After controlled electrically operated valve aperture was turned down, (balance judges four) judged in the detection of carrying out equilibrium condition once more, as more than or equal to setting value (not satisfying condition), then gets back to feedback node four, carried out the detection of termination condition and equilibrium condition once more and judged.If less than the equilibrium condition value, then continue the detection of next termination condition and judge link;

This feedback element is through between feedback node four and five; The centre is provided with three gradual road balances judgements and judges link (balance judgement two, end judgement one, balance judgement three and balance judge four) with end; Controlled electrically operated valve aperture is too small in the cyclic process, then by turning back to feedback node three after the stepping increase aperture; Excessive like controlled electrically operated valve aperture; Then reduce to turn back to feedback node four again after the controlled electrically operated valve aperture by stepping; Can satisfy termination condition again or satisfy the circulation that balance is transferred part when realizing constantly reducing aperture, and then get into corresponding next round procedure links respectively.This feedback element have clearly brought forward continue after effect, be that whole control allocation and transportation row flow process realizes the very important link of hydraulic equilibrium.

5. heat demand fluctuates up and down and follows-feed back (feedback node five): improve and catch the load ability of fuctuation within a narrow range variation up and down, eliminate the hysteresis quality that various fluctuations produce, realize the reliability of water route counterbalance effect;

Behind process feedback node five; (finish to judge one) when whether the state that detects Boolean value output sensor Sdn and San reaches the condition that finishes control allocation and transportation row; Whether also will detect controlled electrically operated valve aperture is minimum value; Be just can finish control to debug, otherwise after must controlled electrically operated valve aperture being moved to minimum value, turn back to feedback node five again and detect the state of judging Boolean value output sensor Sdn and San again and whether meet termination condition;

When after overbalance decision node four; Occur having satisfied equilibrium condition but when failing to satisfy termination condition (finishing to judge two); Must get back to feedback node five, carry out the detection of termination condition and equilibrium condition again and judge, catch and follow the tracks of the fluctuation of thermal load demand; Be not minimum value if satisfy termination condition (finishing to judge two) then detect controlled electrically operated valve aperture genus once more, go, transfer link otherwise continue next control if then can finish the control allocation and transportation;

Behind process feedback node six; When occurring (balance judges five) because of last one equilibrium condition of heat demand fluctuation unmet; Must get back to balance and termination condition circulation that feedback node three carries out many wheels; Prevent the erroneous judgement that the heat demand fluctuation produces and fail to judge the circulation repeatedly of avoiding causing false termination or producing defective; As do not have the heat demand fluctuation, under the situation that satisfies last one equilibrium condition (balance judges five), carry out the minimum aperture of controlled electrically operated valve and detect the judgement link;

As can satisfy last one equilibrium condition (balance judges five); Controlled electrically operated valve is detected when finding not satisfy minimum opening value condition; Then must turn back to feedback node five; Again the circular flow of carrying out equilibrium condition and termination condition and closing the electrically operated valve aperture if can be satisfied the condition that controlled electrically operated valve is minimum aperture, then gets into the detection and judgement link of next termination condition.

This feedback element is through the flow process between feedback node three and the feedback node five; Close on the flow process end more; Just to get back to feedback node three foremost more, experience five road balances again and judge with twice and finish judgement, prevent that any newly-increased heat demand from being failed to judge or judge by accident; And when satisfying last one equilibrium condition but controlled electrically operated valve aperture when not reaching minimum aperture; Be returned feedback node five and carry out FEFO again and judge again that balance is judged, turned down thereupon and finish the circulation judged after the electrically operated valve aperture again, guarantee to reach real balance and termination condition reliably.

6. heat demand balance and need maintenances-feedback (feedback node six): allow to exceed the trickle fluctuation of operational precision scope, avoid meaningless control to transfer and do, increase control and allocate and transport and go the validity of flow process.

Though controlled electrically operated valve has been minimum aperture operating mode; Because last one termination condition still is not satisfied (finishing to judge three); Then got back to after (can be provided with arbitrarily) in 3 minutes and feed back to the node sixfold and newly carry out equilibrium condition and judge (balance judges five) through time-delay; Carrying out minimum aperture detection judgement as just satisfying; Just if can satisfy and can judge (finishing to judge three) by last one termination condition, obtain again and satisfy the constipation beam control and transfer flow process, otherwise the circulation of returning feedback node six once more up to satisfy finish to transfer part till.

This feedback element is ignored the trickle fluctuation of thermal load through introducing time-delay, and in the end one three important step such as equilibrium condition, last one termination condition and minimum electrically operated valve aperture carried out cycle criterion, finishes control allocation and transportation row until all satisfying the back.

Because the fluctuation that the fluctuation of heat demand will produce temperature or pressure or liquid level, the balance of keeping pipeline just must be followed to fluctuate and controlled the aperture that mixes up valve in proportion, in the initial setting up flow process, is designed with temperature sensor Sax and Say (x=2,5,8; Y=3,6,9) subtracts with quilt between difference change direction selection and the two sensors numerical value and subtracted the relation selection.Guarantee to be adapted to various hydraulically balanced application demands, and be designed with the aperture that makes valve and be positive relationship according to difference change direction between the set two sensors and change, or be inverse relationship and change.The water yield that realization is transferred the electrically operated valve of flowing through by the demand control satisfies water route EQUILIBRIUM CONDITION (temperature difference/pressure reduction/liquid level difference constant relatively).In case heat demand changes when advancing the variation that ratio produces greater than the pacing of motorized valve gate, through regulating the aperture of controlled electrically operated valve, still keeps relative balance by new demand.Above-mentioned six road feedback cycle that Here it is the effect that will produce, also be that whole automatic control transfers flow process to satisfy the important step of water route balance.

The analog quantity control accent flow process and the pulse air-conditioning flow process of present embodiment are basic identical; Also be provided with six feedback nodes; Because both transfer output type different in control; The former is through being that the quantity of voltage pulse output increases and decreases and controls the aperture of transferring electric butterfly valve, and the latter is the aperture of transferring electric control valve through the size control of output voltage values or current value.Transfer on the output mode that electrically operated valve opens and closes because difference only is to control, and other control transfers link, feedback node basic identical, the latter has also increased the PID control and has transferred parameter.

Flow process is transferred in the switching value control of present embodiment; Open and reach the position, close and close the four kinds of operating modes (be actually and open and close two kinds of operating conditions) that put in place owing to have only, so flow process is relatively simple, though have digital quantity and analog sensor data to judge as operation; But control transfers target simple; Feedback node has only one, is exactly that priority level is guaranteed-fed back, and this flow process also only operates in the break-make occasion of water route valve.

Present embodiment has been contained three kinds of control mode transfer formulas of two types of valves (electric butterfly valve and electric control valve), 1. electronic dish valve pulse control mode transfer formula; 2. the mode transfer formula is controlled in the output of motorized adjustment threshold voltage or electric current; 3. electric butterfly valve switching value Push And Release control mode transfer formula.Adding that each hydraulic equilibrium is controlled automatically transfers device to have three tunnel control abilities, and three the tunnel all can be set to a kind of control mode transfer formula, also can three the tunnel be set to any one control mode transfer formula respectively.The more important thing is the setting of each control mode transfer formula; All can on liquid crystal touch screen 6, accomplish; And adopt simple the selection to realize with the mode of filling in; Be provided with and accomplish the corresponding control of back automatic butt operation and transfer flow process, this flow process has been programmed in 2 li of PLC controllers, need not the professional and goes to write to control again and debug.

As long as system's operational scheme of present embodiment is earlier through on the liquid crystal touch screen 6, select parameter be provided with variable, just can move automatic detection calculations flow process, flow process is transferred in the automatic butt control then, realizes controlling automatically the purpose of water transfer road balance.Be connected cleverly through shirtsleeve operation and flow process, realize full automatic control allocation and transportation row, can create the more applications occasion and the condition of popularizing use more is provided.

Below, in conjunction with real case, introduce the principle of work of present embodiment:

1, application case one

Hotel's open type life water heating system is used (seeing accompanying drawing 16 for details), and this application case is the concrete application that the applicant is directed against the regenerative apparatus of its patent of invention in first to file (application number 200910105408.4).

This application case is opened the pressure type hot water supply system for certain hotel, and this system heats operation owing to adopt air-conditioning heat pump heat recovery opposite opened domestic hot-water case to circulate, and is the classic applications case of present embodiment.

1.1 the demand of this application case and characteristics:

This water heater funnel is divided into the two large divisions, and first changes three groups of valves of primary side and secondary side by plate and the sensor that is made up is formed, and transfers device 1# to connect through control and opens control; Second portion is the hot water storage tank that contains alternating temperature case and constant temperature oven, and five-group valve door and temperature and liquid level sensor form, and transfers device 2# to connect through control and opens control.

Need to prove, can be considered one group of valve after 1. controlled electronic dish valve V3 and the processing of V5 through wiring, be specially: the opening end of two valve actuators also connects and is controlled by Do3, and shutdown side also connects and is controlled by Do4; Reaching of two valve actuators is connected to Di7 after the position end is connected in series, and the pass is connected to Di8 after putting in place and holding serial connection.2. can be considered one group of valve after controlled electronic dish valve V4 and the processing of V6, be specially through wiring: the opening end of the actuator of two valves and connect after be controlled by Do5, shutdown side and connect after be controlled by Do6; Reaching of two valve actuators is connected to Di12 after the position end is connected in series, and the pass is connected to Di13 after putting in place and holding serial connection.3. the actuator of two valves after the output serial connection, is one a group valve with regard to equivalence through importing and connecing, and can open synchronously or close synchronously, realizes transferring the port of one group of valve just can transfer two groups of valves with time control with controlling.

When the temperature that this heating system transfers device 2# to detect alternating temperature or constant temperature oven by control is lower than setting value; Open the electronic dish valve V3 of control and V5 or V4 and V6 (two groups of valves are controlled on every road); And, control sends enabled instruction (through thermal source output relay contact and connect) when transferring device 1# to send demand for heat to the water circulating pump of secondary side; When transferring device 1# to open the control respective valves again by control again; Heat source one (source pump) or thermal source two (hot-water boiler) send the thermal source demand, accomplish the process of thermal source to the hot water storage tank heating.

If control transfers the liquid level sensor of device 2# to detect when being lower than setting value; Open control electric control valve VR and carry out the moisturizing operation; And the aperture of transferring electric control valve VR according to the difference variation control of alternating temperature case and constant temperature oven; Order ground is to guarantee that through the control rate of water make-up water temperature of alternating temperature case can not descend too much, otherwise can cause having influence on the water temperature fall of constant temperature oven, and the quality that finally causes hot water to supply water descends.Because the moisturizing of alternating temperature case causes water temperature to descend certainly; Make again to be reduced under the temperature value of Tube Temperature Sensor T5 and open the control value; When opening control electric butterfly valve V3 and V5, transfer device 1# to send the thermal source demand and send enabled instruction, the formation coordinated operation to the water circulating pump of secondary side to control;

When if the Tube Temperature Sensor T5 of temperature changing water bank and constant temperature water tank and T6 are lower than setting value simultaneously; Owing to set electric butterfly valve V4 and V6 for preferentially opening the control rank; So this group valve preferentially opens control, when Tube Temperature Sensor T6 is worth greater than startup, just can open electronic dish valve V3 of control and V5 combination.

Control transfers the function of device 2# to be: detect constant temperature water tank (supplying the domestic hot-water of hotel) liquid level and water temperature; Detect the water temperature of temperature changing water bank; When being lower than, the constant temperature water tank liquid level opens control moisturizing electric control valve VR when opening control value (1000mm); , the constant temperature water tank liquid level closes moisturizing electric control valve VR when equaling end value (1850mm); When the constant temperature water tank water temperature is lower than water inlet and backwater electronic dish valve V4 and the V6 (switch control mode transfer formula) that opens the control constant temperature water tank when opening control value (54 ℃); , the constant temperature water tank water temperature closes the electric butterfly valve V4 of constant temperature water tank and the valve of V6 when equaling end value (57 ℃); When the temperature changing water bank water temperature is lower than water inlet and backwater electronic dish valve V3 and the V5 (switch control mode transfer formula) that opens the control temperature changing water bank when opening control value (54 ℃); , the temperature changing water bank water temperature closes the valve of temperature changing water bank electric butterfly valve V3 and V5 when equaling end value (57 ℃); When electronic dish valve V4 and V6 or V3 and V5 open control, when Do7 sends the startup demand to water circulating pump, through relay K A7-1 contact and connect to control and transfer the Di16 (KA15) of device 1# to send the thermal source demand.

Control transfers the function of device 1# to be: the gentle hot water water supply of the Inlet and outlet water water temperature that detects circulating water pipe; When Di16 input desired signal; Open the control plate and change primary side electric butterfly valve V1 (pulse control mode transfer formula); And cause control and transfer the Do7 of device 1# to send thermal source desired signal (opening control outside source pump and related water circulating pump); Also produce internalized prohibition order (being primarily aimed at electronic dish valve V3), and require control to transfer the aperture of electric butterfly valve V1 according to the temperature difference (5 ℃ ± 0.3 ℃) of Tube Temperature Sensor T1 that is provided with and Tube Temperature Sensor T2; When the Di16 input signal disappears, finish electric butterfly valve V1 and open the control flow process and close electric butterfly valve V1 to minimum value; When Di16 input desired signal, open the control plate and change secondary side electric butterfly valve V2 (pulse control mode transfer formula), and require control to transfer the aperture of electric butterfly valve V2 according to the temperature difference (3 ℃ ± 0.3 ℃) of Tube Temperature Sensor T3 that is provided with and Tube Temperature Sensor T4; When the Di16 input signal disappears, finish electronic dish valve V2 and open the control flow process and close electric butterfly valve V2 fully; When the Di16 input signal; Because electric butterfly valve V1 finishes operation or cause electric butterfly valve V1 to finish to open control (internalized prohibition order cancellation) because of thermal source one can't open control; Open the electronic dish valve of control secondary side V3 (pulse control mode transfer formula is held concurrently and carried out the internalized prohibition order); And produce thermal source two Do8 demands output (starting boiler or other thermal source and related water pump), and require control to transfer the aperture of electric butterfly valve V3 according to the temperature difference (3 ℃ ± 0.3 ℃) of T3 that is provided with and T4; When the Di16 blackout, then finish opening the control flow process and closing electric butterfly valve V3 fully of electric butterfly valve V3.

1.2 the application of present case and setting

Present case is used be provided with can be according to above-mentioned operation demand, and the present embodiment control transfers Design of device and description of drawings to realize (seeing accompanying drawing 1 ~ accompanying drawing 15 for details).

2, application case two

Hotel's pressure-bearing type life water heating system (seeing accompanying drawing 17 for details)

This application case is certain pressure-bearing type hot water supply system of hotel, and this system adopts the air conditioner and heat pump unit heat recovery application, as the pre-warmed thermal source of domestic hot-water's moisturizing, is the general application case of the control accent device of present embodiment.

2.1 the demand of this application case and characteristics:

This water heater funnel is three domestic hot-water's independent partitions of pressure-bearing type system.The heat recovery that each subregion reclaims source pump through plate type heat exchanger is as a thermal source; Heating domestic hot-water's moisturizing; Deliver to volumetric heat exchanger again, can satisfy coolant-temperature gage like heat and reach more than 53 ℃, just need not start secondary heat source (hot-water boiler) operation.

Because the plate of three hot water subregions changes the heat that source pump is obtained in the primary side parallel connection together, the priority level of each subregion is identical.Each subregion is controlled accent to the electric butterfly valve (owing to the space reason can not adopt the bigger electric control valve of volume) that plate changes primary side; Effect is the different dynamic heat demand to three hot water subregions; The heat demand of plate being changed primary side is different, transfers the valve opening of primary side to realize that rational discharge comes balance heat demand amount through control.The main sensors of each subregion is filling pipe flow switch and volumetric heat exchanger hot water delivery pipe's temperature sensor and the confession return pipe temperature sensor that plate changes primary side that plate changes secondary side.

When certain district's secondary side wherein causes flow sensor closed because of the hot water moisturizing occurring; And be lower than when starting 54 ℃ of setting values when the temperature value of hot water supply water temperature sensor; Then should open the heating operation (two open control condition must satisfy just simultaneously can open control) in this district of control; Open the aperture of primary side electric butterfly valve Vn (n=1/4/7), and control the aperture of transferring the primary side valve, and keep 5 ℃ ± 0.3 ℃ setting value of the temperature difference of primary side hydraulic optimum balance as far as possible according to the heat demand of secondary side.

When certain district's hot water heat demand reduces; Should reduce the aperture of this district primary side electric butterfly valve Vn; Come balance because of the secondary side heat reduces the primary side difference variation that is produced through reducing the primary side hot water flow, guarantee that this district's primary side hot water temperature difference still is stabilized in 5 ℃ ± 0.3 ℃.

When certain distinguishes the increase in demand of hot water heat, should strengthen the aperture of this district primary side electric butterfly valve Vn, increase the primary side hot water amount and satisfy the demand that the secondary side heat increases, keep this district's primary side hot water temperature difference and still be stabilized in 5 ℃ ± 0.3 ℃.

When the hot water supply water temperature in a certain district is equal to or greater than 57 ℃; No matter whether water flow sensing unit closes; The heating end of run in this district (temperature sensor cuts out the rank of cutting out that is superior to water flow sensing unit); The controlled minimum setting value (full gate tolerance journey 39%) that transfers to of electric butterfly valve Vn aperture ratio this moment, because aperture and flow nonlinear relationship that butterfly valve appeared, butterfly valve 39% aperture ratio is equivalent to about 10% full scale flow.The purpose that minimum flow is set mainly is to ensure in case all being in when closing operating mode of three districts, and also have an appointment 10% discharge heat pump unit of heat recovery house steward is done unloading and shut down necessary service condition, otherwise can cause source pump circuit water alarm fault.If have only the valve in a district to be in minimum close value, then 3.3% its influence of the suitable house steward's water yield of the flow in this district 10% can be ignored; Valve like two districts is in minimum close value, and then quite 6.6% of house steward's flow, also very little to the influence that the operation in another district produces.

Also have a district to need heat maybe need start valve when needing only; The multi-usage hydraulic equilibrium is controlled automatically and is transferred device just to continue to keep heat source to send desired signal, accept the affirmation feedback signal that thermal source starts simultaneously, solved the link that thermal source starts after; Could continue the operation control transfers the link of valve (if do not need feedback; Then can connect the short circuit wire jumper to the thermal source feedback input end, satisfy the demand of program, see accompanying drawing 5 for details) at the thermal source output terminal.

2.2 the application of this application case and setting

Present case is used be provided with can be according to above-mentioned operation demand, and the control of present embodiment transfers Design of device and description of drawings to realize (seeing accompanying drawing 1 ~ accompanying drawing 15 for details).

3, application case three

Central air conditioner machine room water collecting and diversifying device cold balancing dispensing applications (seeing accompanying drawing 18 for details)

Should use case as often using in the reducing energy consumption project; Much putting into operation 10 years or above central air conditioner system; The water collecting and diversifying device of cold station machine room is not much installed the static or dynamic valve regulation valve of hydraulic equilibrium purposes; Especially at subregion pipe diameter greater than DN250 or above system because the big cost of the volume of equalizing valve is high, the Construction Party does not generally adopt.But as reducing energy consumption, the balance of chilled water is occupied very big ratio to the lifting of cold station operational efficiency, therefore, each cooling subregion of original water collecting and diversifying device is transformed, and realizes the cooling water collecting and diversifying device system of each subregion adjustable type.

3.1 the demand of present case and characteristics

Should use case only to dispose the system of general Hand-operated butterfly valve for each cooling subregion; Become the aperture that each cooling subregion can be regulated electric butterfly valve automatically according to the demand of refrigeration duty through installing YE (installing actuator again additional after perhaps need changing valve body) additional, realize the cold that provides suitable thereby regulate flow.

Should use totally four of the cooling subregions of case, supply the bypass regulator valve of backwater to bring control accent scope in addition, should dispose two multi-usage hydraulic equilibriums with case and control the accent device automatically; The demand of this application case is simple relatively; Each subregion does not receive outside related, only transfers the aperture of valve according to the temperature control that supplies backwater, because the controlling temperature that opens of valve is set to 70 ℃; No matter, therefore make valve be in and open the control state always so be that 12 ℃ in cooling backwater or heating water return all are lower than the startup value for 55 ℃; And the temperature of valve-off also is arranged on 70 ℃, and the highest cooling temperature or the highest heating temperature also can't surpass this temperature value, and therefore, valve can not closed yet; But it is the actual measurement temperature approach by actual supply and return water temperature sensor that the aperture of valve is transferred in control, sets and remain on the runtime value of 5 ℃ ± 0.3 ℃ of the best, the operating mode value that at this moment finally should will keep with case.

Should control automatically with the multi-usage hydraulic equilibrium of case transfers device 1# to be responsible for two electric butterfly valves of control accent; Make electric butterfly valve V1 and electric butterfly valve V2 respectively; One is to be responsible for control to transfer 4 ~ 22 layers of guest room district, and another is to be responsible for 1 ~ 3 layer of multi-functional district, and two valves all are operated in pulse control mode transfer formula.The multi-usage hydraulic equilibrium is controlled automatically and is transferred device 2# to be responsible for three electrically operated valves of control accent; Electric butterfly valve V3 is responsible for control and transfers attached building Saunas district; Electric butterfly valve V4 is responsible for control and transfers attached building Karaoke district; These two electric butterfly valves and multi-usage hydraulic equilibrium are controlled automatically and are transferred being provided with of device 1# basic identical, and the 3rd to be the control of being responsible for electronic by-pass valve variable valve VR transfer, select analog quantity control mode transfer formula for use.

Owing to do not have association between two casees; And it is fairly simple to the control accent content of valve; Therefore relatively the control of present embodiment transfers the initial setting up of the pulse control mode transfer formula of device, operation Variables Selection also simple relatively, just no longer details here (specifically can with reference to the introduction of application case one and application case two).

And the multi-usage hydraulic equilibrium is controlled the electric butterfly valve V3 that transfers device 2# automatically and is responsible for using the control of the electronic bypass regulator valve VR of case to transfer, and is the aperture of transferring electronic bypass regulator valve VR according to the pressure difference control that supplies return pipe.The control of opening of electronic bypass regulator valve VR is closed according to water flow switch F1; Closing also is the disconnection according to water flow switch F1, and key is that the aperture of electronic bypass regulator valve VR is will be according to the 150Kpa pressure difference of the setting that supplies backwater, in case detected pressure difference is greater than this setting value; Electronic bypass regulator valve VR will increase aperture; The bypass water yield lets pressure difference get back to 150Kpa and goes up, so the variation of analog sensor Sax&Say difference is chosen as forward, and pressure difference just increases aperture greater than setting value; Pressure difference just reduces aperture less than setting value; In case because the main shut-down system water pump cuts out and causes Boolean value output sensor Sd1 to cut out, then pressure difference descends, electronic bypass regulator valve VR closes fully.The pid value of electronic bypass regulator valve VR can be set to:

（1） P=[5] s

（2） I=[10] Kpa

（3） D=[ ]

Because the detection reaction time of the changing value of pressure is shorter, thus P be set to [5] s, I is set to [10] Kpa, D does not select for use.

Should all need be not related with outward with case, therefore to transfer the Do7 of the thermal source demand output 1 of devices to open the control rank be [N] for the Do8 demand levels of [N] and thermal source demand output 2 for two controls.

3.2 the application of present case and setting

To sum up; The control that PLC controller 2 moved transfers flow process to be made up of " initial setting up flow process-be provided with ", " initial setting up flow process-be provided with two ", " self check computing flow process ", " allocation and transportation row flow process is controlled in pulse automatically ", " analog quantity is controlled allocation and transportation row flow process automatically ", " switching value is controlled allocation and transportation row flow process automatically " institute; Wherein " initial setting up flow process-be provided with ", " initial setting up flow process-be provided with two "; Be operation variable and the operational factor that realizes that control is automatically transferred, can on the liquid crystal touch screen 6 of the device of present embodiment, selection be set; " self check computing flow process " is to detect union automatically to go out the stepping ratio value that pulse or voltage (or electric current) are transferred in actual control, is built-in and automatic operation; " allocation and transportation row flow process is controlled in pulse automatically ", " analog quantity is controlled allocation and transportation row flow process automatically ", " switching value is controlled allocation and transportation row flow process automatically " are built-in and automatic operations.

The setting and the selection that can be artificial move variable and operational factor to different purposes and demand through liquid crystal touch screen 6; Do not need to connect specially PLC controller 2 serial ports and go coding just can realize, being provided with of this operation variable and operational factor selects to have following content:

(a) controlled valve all can select 3 kinds of control mode transfer formulas, 2 kinds of outputs to advance ratio with feedback parameter, 3 kinds of control pacing, is provided with maximumly to transfer priority level, generation or carry out internalized prohibition order with minimum opening value, control;

(b) controlled valve can be selected this device arbitrarily, and in one, 9 analog sensors in 3 Boolean value output sensors three are the assembling device and the corresponding ports of the combination of this control allocation and transportation row;

(c) controlled valve opens the control signal, can select private also can select to share 3 Boolean value output sensors of this device one of them or 9 analog sensors one of them, or the combination of any 1 switching value and any 1 analog quantity;

(d) valve of 3 of this device Boolean value output sensor inputs, 3 analog sensor input values opens the control rank, all can be set to invalid, low, a Senior Three rank;

(e) 3 controlled valve external forced open control input operation rank and all can be selected as effective or invalid;

(f) 3 of this device groups of analog sensor differences can be set to the subtraction relation that absolute value is a positive number;

(g) 3 of this device groups of analog sensor difference change direction and controlled valve opening change direction may be selected to be positive change or inverse change relation;

(h) all can be selected type arbitrarily be temperature or pressure or liquid level to 9 of this device analog sensors;

It is Voltage Feedback or current feedback that 9 analog sensors of this device all can be selected data layout arbitrarily.

The device of present embodiment is applicable to that office building, hotel, hotel, factory floor, megastore, large stadium etc. need central air conditioner or domestic hot-water, have the application scenario of demand to hydraulic equilibrium.

In addition, the digital display board of present embodiment, panel leds, hand push button, temperature transmitter all design for the function of improving this device, can save.

For a person skilled in the art, can make other various corresponding changes and distortion, and these all changes and distortion should belong within the protection domain of claim of the present invention all according to the technical scheme and the design of above description.

Claims

1. a multi-usage hydraulic equilibrium is controlled the accent device automatically; Comprise control accent case, control transfers the panel of case to be provided with man-machine interface, and control is transferred in the case and is provided with the PLC controller; The PLC controller electrically connects through communication interface and man-machine interface; It is characterized in that, also comprise analog quantity extender, analog quantity input and output terminal, switching value input and output relay group, switching value input and output terminal, analog quantity extender and PLC controller electrically connect; Analog quantity input and output terminal and analog quantity extender electrically connect, and the switching value IO port of PLC controller electrically connects through switching value input and output relay group and switching value input and output terminal;

Said analog quantity extender electrically connects through analog quantity input and output terminal and analog sensor;

The input relay group of said switching value input and output relay group is through the keying state of the input terminal detector switch quantity sensor of switching value input and output terminal;

A plurality of electrically operated valves electrically connect with switching value input and output terminal corresponding switch amount input and output relay group and/or analog quantity input and output terminal respectively;

Said man-machine interface; Be used to be provided with maximal value, intermediate value and the minimum value of the valve opening of controlled electrically operated valve; The corresponding relation of switching value input and output terminal and Boolean value output sensor is set; The corresponding relation of analog quantity input and output terminal and analog sensor is set, be provided with controlled electrically operated valve respectively with the incidence relation of Boolean value output sensor and analog sensor, the startup value and the end value of single analog sensor are set; Two setting differences between the analog sensor of the same type are set, and controlled electrically operated valve is set open the control rank;

Whether the valve opening that a. detects controlled electrically operated valve is greater than intermediate value, if greater than intermediate value, then to feedback node one; If less than intermediate value, the valve opening that then increases controlled electrically operated valve is to intermediate value, to feedback node one;

Wherein, M, N are the natural number greater than zero.

2. multi-usage hydraulic equilibrium as claimed in claim 1 is controlled the accent device automatically; It is characterized in that; Said electrically operated valve comprises electric butterfly valve and/or electric control valve; The actuator of electric butterfly valve and switching value input and output terminal electrically connect, and the actuator of electric control valve and analog quantity input and output terminal electrically connect.

3. multi-usage hydraulic equilibrium as claimed in claim 2 is controlled the accent device automatically; It is characterized in that; Calculate the valve opening controlled variable of electric butterfly valve: detect valve opening and spend to the working time of 90 degree from 0; And open female number of required pulse width being defined as controlled electrically operated valve this working time, then divided by after the stepping ratio, draw in what the stepping ratio was opened and open the control pulse width; Detect the working time of valve opening, and close female number of required pulse width,, draw in what the stepping ratio was closed and open the control pulse width then divided by after the stepping ratio being defined as controlled electrically operated valve this working time from 90 degree to 0 degree.

4. multi-usage hydraulic equilibrium as claimed in claim 3 is controlled the accent device automatically; It is characterized in that; Valve opening to electric butterfly valve is controlled: the PLC controller is according to 1% or 5% or 10% stepping ratio and open the output of control pulse width and open or close pulse voltage; Number of times through opening or close pulse voltage adds up, and increases or reduce valve opening.

5. multi-usage hydraulic equilibrium as claimed in claim 2 is controlled the accent device automatically; It is characterized in that; Calculate the valve opening controlled variable of electric control valve: voltage or current value when the detection valve is opened into maximum position by zero aperture; And then, draw in opening of stepping ratio unlatching and control voltage or current value divided by after the stepping ratio; Voltage or current value when detecting valve and closing to zero aperture by maximum position, and then divided by after the stepping ratio draw in what the stepping ratio was closed and open control voltage or current value.

6. multi-usage hydraulic equilibrium as claimed in claim 5 is controlled the accent device automatically; It is characterized in that; Valve opening to electric control valve is controlled: the PLC controller is according to 1% or 5% or 10% stepping ratio and open control voltage or current value; Voltage or current value that output is corresponding increase or reduce valve opening.

7. multi-usage hydraulic equilibrium as claimed in claim 1 is controlled the accent device automatically, it is characterized in that, this multi-usage hydraulic equilibrium is controlled automatically and transferred device also to comprise temperature transmitter, and said temperature transmitter and analog quantity extender electrically connect.

8. multi-usage hydraulic equilibrium as claimed in claim 1 is controlled the accent device automatically, it is characterized in that, said man-machine interface is a liquid crystal touch screen.

9. multi-usage hydraulic equilibrium as claimed in claim 1 is controlled the accent device automatically; It is characterized in that; In man-machine interface is provided with; Setting difference between two analog sensors of the same type is set to positive relationship or inverse relationship, and the valve opening of controlled electrically operated valve changes according to the positive relationship or the inverse relationship of the setting difference between two analog sensors of the same type that are associated.

10. multi-usage hydraulic equilibrium as claimed in claim 1 is controlled the accent device automatically; It is characterized in that; This multi-usage hydraulic equilibrium is controlled automatically and is transferred device also to comprise hand push button; Said hand push button is positioned to control on the panel of transferring case and with the PLC controller and electrically connects, and hand push button is used for the aperture of the controlled electrically operated valve of manual adjustments.