CN201209568Y - Energy-conserving high-efficiency operation control system for header pumps - Google Patents
Energy-conserving high-efficiency operation control system for header pumps Download PDFInfo
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- CN201209568Y CN201209568Y CNU2008200467095U CN200820046709U CN201209568Y CN 201209568 Y CN201209568 Y CN 201209568Y CN U2008200467095 U CNU2008200467095 U CN U2008200467095U CN 200820046709 U CN200820046709 U CN 200820046709U CN 201209568 Y CN201209568 Y CN 201209568Y
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Abstract
The utility model relates to an energy saving high-efficiency operation control system used for piping-main scheme pumps; the control system comprises a main pipe (7), and is characterized in that the control system also comprises a controller (1), a plurality of variable frequency devices (4) and a plurality of detecting units (5); the main pipe (7) is connected with a plurality of branch pipes (71) which are connected parallelly; the branch pipes (71) are provided with a pump load (6); the detecting unit (5) is arranged on the output ends of the pump load (6); the control signal input ends of the controller (1) are connected with the input ends of the variable frequency devices (4); the output ends of the variable frequency devices (4) are connected with the input ends of the pump load (6); the detection signal output ends of the detecting units (5) are connected with the signal input ends of the controller (1). The energy saving high-efficiency operation control system can accurately determine the operation pressure of the pumps to more safely and reliably control the operation of the pumps, so that the operation of the pumps reaches the best energy saving effect, so as to achieve higher efficiency and the better effect of energy saving, and greatly improve the working efficiency.
Description
Technical field:
The utility model relates to a kind of control system that is applied to carry the control pump, particularly is involved in a kind of efficient energy-saving operation control system that is used for the piping-main scheme pump class of gas or liquid and other medium.
Background technique:
At present, the method for operation of valve control and big or small pump combination has substantially still been adopted in the operation of the load of the pumps in the conveying of gas or liquid.Such mode defective is: because valve design allowance or actual motion be less than rating value, the general aperture of valve is less, and the operational efficiency of pump is very low; Because when big pump combined operation with little pump, not only frequent start and stop equipment also need carry out the valve auxiliary adjustment.Therefore, such mode will cause the waste of big energy, and the pipeline pressure fluctuation, influences the pipeline security of operation, has increased the workload of operation and maintenance simultaneously.
Because the method for operation of valve control and big or small pump combination has above defective, for this reason, the energy-saving pump control system that mechanical type, electric are also arranged now, these systems have overcome this defective with reasonable, but, because the equipment of the energy-saving pump control system of mechanical type, electric is than other speed control device input cost height, therefore when design of piping-main scheme pump type systematic or transformation, converting operation of basic employing, other power frequencies, frequency conversion and the power frequency operating mode that combines in parallel realize control strategies such as constant voltage, constant current, variable voltage and variable current.
Along with the popularization of variable-frequency control technique, frequency conversion is extensive use on load of the pumps; But for piping-main scheme parallel running pump class, design, to transform strategy basic for transforming one, and power frequency and converting operation reach the control purpose of constant voltage, constant current, variable voltage and variable current.Such design, the security of operation of transformation are greatly enhanced, and reduced the workload of operation, but in actual motion, its energy-saving effect are very little; For valve control, the general pump valve still can not standard-sized sheet, otherwise the overload phenomenon occurs because the outlet pressure low discharge increases, so energy-saving effect is had a greatly reduced quality; For large and small pump composite control, see that from pump characteristic it regulates space much smaller than difference power or difference in flow between theoretic big pump and the little pump because frequency conversion transformation outlet pressure diminishes; For the separate unit variable frequency adjustment, after other pumping pressures, the changes in flow rate, the power consumption of efficient district is departed from the operation point to be increased, and has offset the effect of part energy-saving and frequency-variable.
From the above: the load of the pumps operational efficiency in the conveying of existing gas or liquid is low, cost is high and energy-conservation poor.
The model utility content
The purpose of this utility model, be low for the load of the pumps operational efficiency in the conveying that specifically overcomes existing gas or liquid, cost is high and the defective of energy-conservation difference, and a kind of efficient energy-saving operation control system of piping-main scheme pump class is provided.
The efficient energy-saving operation control system of piping-main scheme pump class, comprise female pipe, it is characterized in that: also comprise control gear, several converter plants, several detection units, be connected with the child pipe of many parallel connections on female pipe, described sub-pipe is provided with load of the pumps, detection unit is arranged on the output terminal of load of the pumps, the control signal output terminal of control gear connects the input end of converter plant respectively, the input end that end connects load of the pumps is gone in the output of converter plant, and the testing signal output terminal of detection unit connects the signal input part of control gear.
Realize that the purpose of this utility model can also reach by following measure:
A kind of mode of execution of the present utility model is: described control gear is made up of master controller and digital controller, the I/O mouth of master controller is connected with the I/O mouth of digital controller, several signal output parts of digital controller connect the control input end of a converter plant respectively, and several signal input parts of digital controller connect the signal output part of a detection unit respectively.Described master controller has the data preservation and command function is sent in computing, control compute chip, human-computer dialogue, and digital controller has the semiotic function of instruction of receiving center controller and detection unit.
A kind of mode of execution of the present utility model is: described master controller and digital controller for integral structure or split-type structural.
A kind of mode of execution of the present utility model is: a converter plant connects a load of the pumps, constitutes VFC structure one to one; Perhaps a converter plant connects two or two above load of the pumps, constitutes one-to-many VFC structure.
A kind of mode of execution of the present utility model is: described load of the pumps is made up of pump, valve, pressure meter and flowmeter, valve has two, the input end of the pump that one of valve is installed in, delivery side of pump successively setting pressure meter, flowmeter and valve two, two delivery outlet of valve is provided with detection unit.
A kind of mode of execution of the present utility model is: described control gear I/O end connects an internet server and a printer.
The beneficial effects of the utility model are:
1, because the utility model is equipped with detection unit on the sub-pipe of pump equipped at outlet port, can measure the operating pressure of pump so accurately, make the operation of control pump more safely and reliably of its control system, make pump operation reach best energy-saving effect;
2, because the utility model uses one to have data preservation and computing, control compute chip, human-computer dialogue and send the operation that the control apparatus of execution command function is controlled a plurality of load of the pumps, so not only economical, can also realize pump automation adjusting control operating pressure, thereby it is higher to reach efficient, more energy-conservation effect;
3, because control apparatus of the present utility model output is connected in internet server and printer, can make this control system carry out remote access control like this, the output of formulating form is according to actual needs increased work efficiency greatly.
Description of drawings
Fig. 1 is control system figure of the present utility model.
Fig. 2 is that control system of the present utility model detects the sensing schematic representation.
Fig. 3 is the schematic diagram of determining between the efficient operation of the utility model.
Fig. 4 is a control flow chart of the present utility model.
Embodiment
Specific embodiment 1:
As shown in Figure 1, the efficient energy-saving operation control system of the utility model piping-main scheme pump class, comprise control apparatus 1 with a plurality of I/O ports, several converter plants 4 and the plurality of detection unit 5 that connect the input port of control apparatus, its control apparatus 1 comprises that again having data preserves and computing, the control compute chip, the master controller 11 that command function is sent in human-computer dialogue be connected the digital controller 12 that its master controller 11 input ports have the semiotic function of instruction of receiving center controller and detection unit, wherein the I/O of master controller 11 is connected in printer 2 control ends and intertnet server 3 control ends, and each converter plant 4 input end is connected in a load of the pumps 6 output ports.
With reference to Fig. 2, manage many branch stand pipes 71 arranged side by side of 7 outputs by mother, pressure meter 9 is installed each setting of female pipe two ends, import/export and female pipe outlet end is equipped with the statistics of a flowmeter 10 as total pressure-flow, and every strip pipe I/O port place is equipped with two switch valves 8; The input end of the pump that one of valve (8) is installed in, delivery side of pump successively setting pressure meter 91, flowmeter 101 and valve 8 two, two delivery outlet of valve 8 is provided with detection unit 5, and each load of the pumps 6 control output end mouth is connected in a converter plant 4 input ends.
Below in conjunction with embodiment control principle of the present utility model is further described:
With reference to Fig. 3 and Fig. 4, in control system, set out the improved efficient Operational Zone of pump frequency conversion according to actual conditions, i.e. near rated flow-pressure (Q-H) curve and pipe system performance curve point of intersection (efficacious workaround of pump).L1, L2, L3, L4, L5, L6, L7 are respectively among the figure:
L1: the water pump design discharge-pressure of the power frequency operation (characteristic curve of Q-H);
L2: the adjustable speed water pump of converting operation is at flow-pressure of a certain rotating speed (this curve changes according to running speed is different, and L2 only is the wherein a certain rotating speed of signal) (characteristic curve (the A point is the design rated operation point of water pump among the figure) of Q-H);
L3: through the resistance of pipe system curve (quadratic curve overlaps with the iso-efficiency curve of pump speed control operation) of water pump design rated efficiency point;
L4: be the interval boundary line of the restriction operation upper limit of the operational efficiency that guarantees water pump;
L5: be the interval boundary line of restriction operation lower limit of the operational efficiency that guarantees water pump;
L6: for guaranteeing the minimum discharge restrictive curve of water pump safe operation;
L7: be the minimum operating pressure restrictive curve of the technological requirement that guarantees water pump operation.
Working principle of the present utility model is such:
At first, the curve 1 and the curve 2 of every pump deposited in the digital controller (12), adjust the operation frequency of pump and the combination of process pump quantity, the flow when making pump operation-pressure operation point is in the interval that L4, L5, L6, L7 surround.Wherein the downside of the left side of L6, L7 is regulated the restrictive condition of water pump operation operation point all as water pump safety and technological requirement as control system, and can not be as the interval of work.Its setting and qualification parameter detect by detection device 5, the data that detect by the master controller 11 of control apparatus 1 finish the finishing of preservation to device databases, operation of data, control algorithm, human-computer dialogue is sent control command, and the control command of digital controller 12 implementation center's controllers 11 is arranged;
Secondly, (the A point is in the left side of L4 curve during greater than the boundary line L4 in the restriction operation upper limit district of pump for the operation ratio that detects load of the pumps when detection unit 5, operation frequency is at n (50-f)〉scope of f), send regulated signal by detection unit 5 to the digital controller 12 of control apparatus 1, signal passes to master controller 11 by digital controller 12 again, at last by sending the instruction of long pump of time out of service to digital controller 12 after the chip calculation process of master controller 11.Its instruction is received by digital controller 12, and controls converter plant 4 the longest pumps of time out of service by the control chip execution command of digital controller 12; Otherwise, detect the boundary line L4 of the operation ratio of load of the pumps less than the restriction operation upper limit district of pump when detection unit 5, and on the resistance of pipe system curve L3 of pump design rated efficiency point (being that the A point is between curve L4 and curve L3), send regulated signal by detection unit 5 to the digital controller 12 of control apparatus 1, signal passes to master controller 11 by digital controller 12 again, at last by the instruction of sending downward modulation load of the pumps 6 operation ratios after the chip calculation process of master controller 11 to digital controller 12, its instruction is received by digital controller 12, and finely tune frequency reducing by the control chip execution command control converter unit 4 of digital controller 12 and control load of the pumps 6, the operation ratio of downward modulation load of the pumps 6; Digital controller 12 send regulated signal, signal passes to master controller 11 by digital controller 12 again, again by
Once more, the operation ratio that detects load of the pumps when detection unit 5 (is the downside of A point at curve L5 less than the interval boundary line L5 of restriction operation lower limit of pump, operation frequency is greater than 49hz) time, send regulated signal by detection unit 5 to the digital controller 12 of control apparatus 1, signal passes to master controller 11 by digital controller 12 again, at last start the instruction of short pump working time by sending to digital controller 12 after the chip calculation process of master controller 11, its instruction is received by digital controller 12, and the control chip execution command control converter plant 4 that passes through digital controller 12 starts the shortest pump working time, otherwise, the operation ratio that detects load of the pumps when detection unit 5 is greater than the interval boundary line L5 of restriction operation lower limit of pump and (be that the A point is between curve L5 and curve L3 under the resistance of pipe system curve L3 of pump design rated efficiency point, operation frequency is greater than 49hz) time, send regulated signal by detection unit 5 to the digital controller 12 of control apparatus 1, signal passes to master controller 11 by digital controller 12 again, at last by sending 6 instructions of fine setting raising frequency control pump to digital controller 12 after the chip calculation process of master controller 11, its instruction is accepted by digital controller 12, and finely tune raising frequency by the control chip execution command control converter plant 4 of digital controller 12 and control load of the pumps 6, raise the operation ratio of load of the pumps 6.
At last, control apparatus 1 is grasped the runnability of system by intertnet server 3 comprehensively, and The whole control system is inquired about and controlled to service data, uses printer 2 output data parameter report customizations when needed.
Specific embodiment 2:
The characteristics of present embodiment are: many load of the pumps 6 that drag on the consistent sub-pipe arranged side by side of performance parameter system-head curve are controlled by a converter plant 4, make whole load of the pumps use a frequency conversion to drag, and many pump operation pressure that a detection unit 5 detects performance parameter system-head curve unanimities are set in a load of the pumps 6 outlet ports, constitute one-to-many and detect the VFC structure.All the other are identical with embodiment one.
Claims (6)
1, the efficient energy-saving operation control system of piping-main scheme pump class, comprise female pipe (7), it is characterized in that: also comprise control gear (1), several converter plants (4), several detection units (5), be connected with the child pipe (71) of many parallel connections on female pipe (7), described son pipe (71) is provided with load of the pumps (6), detection unit (5) is arranged on the output terminal of load of the pumps (6), the control signal output terminal of control gear (1) connects the input end of converter plant (4) respectively, the input end that end connects load of the pumps (6) is gone in the output of converter plant (4), and the testing signal output terminal of detection unit (5) connects the signal input part of control gear (1).
2, the efficient energy-saving operation control system of piping-main scheme pump class according to claim 1, it is characterized in that: described control gear (1) is made up of master controller (11) and digital controller (12), the I/O mouth of master controller (11) is connected with the I/O mouth of digital controller (12), several signal output parts of digital controller (12) connect the control input end of a converter plant (4) respectively, and several signal input parts of digital controller (12) connect the signal output part of a detection unit (5) respectively.Described master controller (11) has the data preservation and command function is sent in computing, control compute chip, human-computer dialogue, and digital controller (12) has the semiotic function of receiving center controller (11) instruction and detection unit.
3, the efficient energy-saving operation control system of piping-main scheme pump class according to claim 2 is characterized in that: described master controller (11) and digital controller (12) for integral structure or split-type structural.
4, the efficient energy-saving operation control system of piping-main scheme pump class according to claim 1 is characterized in that: a converter plant (4) connects a load of the pumps (6), constitutes VFC structure one to one; Perhaps a converter plant (4) connects two or two above load of the pumps (6), constitutes one-to-many VFC structure.
5, the efficient energy-saving operation control system of piping-main scheme pump class according to claim 1, it is characterized in that: described load of the pumps (6) is made up of pump, valve (8), pressure meter (91) and flowmeter (101), valve (8) has two, the input end of the pump that one of valve (8) is installed in, delivery side of pump successively setting pressure meter (91), flowmeter (101) and valve (8) two, two delivery outlet of valve (8) is provided with detection unit (5).
6, according to the efficient energy-saving operation control system of right 1 described piping-main scheme pump class, it is characterized in that: described control gear (1) I/O end connects an internet server (3) and a printer (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200467095U CN201209568Y (en) | 2008-04-22 | 2008-04-22 | Energy-conserving high-efficiency operation control system for header pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200467095U CN201209568Y (en) | 2008-04-22 | 2008-04-22 | Energy-conserving high-efficiency operation control system for header pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209568Y true CN201209568Y (en) | 2009-03-18 |
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ID=40480302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200467095U Expired - Fee Related CN201209568Y (en) | 2008-04-22 | 2008-04-22 | Energy-conserving high-efficiency operation control system for header pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201209568Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105121858A (en) * | 2013-04-26 | 2015-12-02 | 株式会社荏原制作所 | Pump device |
-
2008
- 2008-04-22 CN CNU2008200467095U patent/CN201209568Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105121858A (en) * | 2013-04-26 | 2015-12-02 | 株式会社荏原制作所 | Pump device |
| CN105121858B (en) * | 2013-04-26 | 2017-03-08 | 株式会社荏原制作所 | Pump installation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20120422 |