• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention comprises a control and monitoring system for one or more pumps (3), wherein the pumps (3) have the task of pumping a volume of liquid from one place to another. The system aims to provide an energy efficient operation of the pumps (3) in the system, since it is taken into account that the power consumption of a pump falls in the third power in relation to the pump's pump capacity. The system includes pre-adaptive adaptation routines to find energy-efficient operating points. Procedures for starting up and operating the specified system have also been demonstrated. Fig. 5
    公开号:SE1150434A1
    申请号:SE1150434
    申请日:2011-05-13
    公开日:2011-11-15
    发明作者:Lars Woxen；Sondre Keim
    申请人:Guard Systems Engineering As；
    IPC主号:
    专利说明:

    [9] Furthermore, the objectives are achieved with a method for starting up a pump in a control and monitoring system for one or more pumps, one or more actuators and one or more PLCs where the pumps have the task of pumping a volume of liquid from one place to another. another, where the steps are initiated by one or more computer programs for energy management and monitoring, where the program or programs are stored in or associated with one or more PLCs.
    [10] Furthermore, the present invention comprises a method for normal operation of a pump in a control and monitoring system for one or more pumps, one or more actuating means and one or more PLCs where the pumps have the task of
    [11] P11-0310 .A pumping a volume of liquid from one place to another, where the steps are initiated by one or more computer programs for energy management and monitoring, where the program or programs are stored in or associated with one or more PLCs.
    [12] [0012]
    [13] [0013]
    [14] [0014]
    [15] [0015]
    [16] [0016]
    [17] [0017]
    [18] [0018]
    [19] [0019]
    [20] [0020]
    [21] The present invention will now be described with reference to the figures where, Fig. 1 or more pumps, shows a block diagram of a control and monitoring system for a Fig. 2 shows a pump curve with pumped liquid quantity as a function of pressure at several speeds, Fig. 3 shows two pump curves with pumped liquid quantity as a function of pressure and power consumption, Fig. 4 shows an example of a pump station according to the present invention, Fig. 5 shows a function diagram according to the present invention, Fig. 6 shows a block / function diagram according to the present invention, flow chart of a method for starting a system according to the present invention, Fig. 8 shows a flow chart for a method for normal operation of a system according to the present invention, and Fig. 9 shows a flow chart for a method for recording the reference characteristics of the system and BEP (Most Energy efficient point).
    [22] The present invention will now be described in more detail with reference to the accompanying drawings. The drawings are intended to facilitate understanding of the system and are in no way to be construed as limiting the scope of the invention.
    [23] [0023]
    [24] [0024]
    [25] [0025]
    [26] [0026]
    [27] [0027]
    [28] [0028]
    [29] [0029]
    [30] The present invention is characterized in that one or more programs for energy control, monitoring and control are used which are independent of the PLC type.
    [31] [0031]
    [32] [0032]
    [33] [0033]
    [34] 6 P11-O310 3 about 50%. Consequently, it is not energy efficient to run pumps at full power. Furthermore, the Proportionality Act shows that the pressure (H) falls in the second power as a function of speed, while volume flow or pumped quantity is reduced linearly in relation to speed.
    [35] After the volume has been pumped out, the pump stops and results from the pumping out are stored. The results show energy consumed during pumping and which is used in "efficiency analysis" for selection of small adjustments in speed to always be able to make the energy savings optimal (PLS learns the process and energy optimization will improve over time).
    [36] In an example (Fig. 4), the present invention comprises the following components: PLC 1 (Programmable Logic Control) a main component of the energy saving pump control solution comprising a PLC program according to the present invention. The solution is independent of the PLC type.
    [37] The energy saving program located in or associated with the PLC 1 comprises three main functions: 1.
    [38] [0038]
    [39] P11-O310, automatically controls the speed of the pump 3 (via frequency converter 2) with respect to the most energy-saving point on the pump curve - _ pumped volume to the lowest possible energy. The program will continuously adjust the pump speed, measure and record the associated process data to be at the most energy-saving speed. 2. Automatic detection of downtime.
    [40] [0040]
    [41] 9 P 11-0310 subsequent. This is a registration of all current process measurements and applications used. The reference is used as basic settings to calculate an optimal operating point / range and to detect downtime. The reference characteristics make it possible to show changes in the pump's characteristics over time (wear of the pump, etc.) that can be presented in reports.
    [42] [0042]
    [43] [0043]
    [44] [0044]
    [45] [0045]
    [46] [0046]
    [47] [0047]
    [48] [0048]
    [49] P11-0310 101.0: Displays volume-controlled energy-saving pump control (ESPS) based on the measurement of pumped quantity when using flow meters, - flow meters can for example be a volume flow meter which in time will indicate the amount of liquid that has been pumped. 102.0: Level-controlled energy-saving pump control calculates the pumped quantity based on the level in the tank being pumped from. (Change pumped volume (from level measurement) + supplied quantity (measured or calculated inflow)) Calculates the pumped quantity based on the level in the tank to which it is pumped. (Change pumped volume (from level measurement) - quantity out of tank (measured or calculated discharge)) 103.0: Pressure-controlled energy-saving pump control, calculates pumped quantity based on measurement of pressure on pump line. 104.0: Calculated energy-saving pump control (without measurements from process), Calculates the pumped quantity based on measurement of current and torque from frequency converter.
    [51] 11 P11-0310 recovered. If the start conditions are in order, a start-up cycle will normally be run. The start-up cycle may have the purpose of avoiding sedimentation of sludge in a pump sump. Among the parameters that are set, there are advances. As can be seen from the figure, a strong increase is given (for example 100%). This is held for a given time, increase time. When the time for the elevated start has expired, you move on to analysis of pump efficiency.
    [52] 12 P11-0310 something about the status of a pump. The characteristics will give an indication of optimal operating conditions for the pumps covered by a system according to the present invention. The characteristics are dynamic so that the adaptability of the system is maintained and thus the security around the choice of optimal operating points will also be maintained over time.
    [53] [0053]
    [54] [0054]
    [55] Measurements provided by the system are recorded and stored in tabular form (Table 1). This forms the basis of the characteristics of the system. The different measurements made at the same time are stored in the columns in the table.
    [56] P11-O310 Interruptions can be detected on single measurements or on the basis of several measurements in the characteristics.
    Examples of interruption detection are: Results from integration indicate rapid changes in the system Percentage change from the previous measurement Percentage change from reference situation Comparison of power consumption in relation to the reference characteristic Comparison of quantity in relation to the reference characteristic
    权利要求:
    Claims (23)
    [1]
    1. P11-0310 «Claim 1.
    [2]
    Control and monitoring system for one or more pumps (3), wherein the pumps (3) have the task of pumping a volume of liquid from one place to another, characterized in that the system comprises at least: - means (4, 5 , 6, 7, 104.0) to provide measurement data useful for providing a measure of a pumped amount of liquid from said one or more pumps (3), means for providing operating status data from said one or more pumps (3), one or more PLCs (1) associated with one or more computer programs for energy management and monitoring wherein said one or more PLCs (1) are configured to receive said measurement data and said operating status data to process said measurement data and said operating status data by means of said one or more computer programs for energy management and monitoring and in response generating one or more output parameters associated with the operating status of said one or more pumps (3), and - one or more actuating means (2) s if associated with said one or more pumps (3) and said one or more PLCs (1) wherein said one or more actuators (2) are adapted to receive output parameters from said one or more PLCs (1) and in response to received output parameters, generate one or more start-up parameters for said one or more pumps (3).
    [3]
    3. A system according to claim 1, characterized in that the system is further adapted for communication with a superior operational control system.
    [4]
    A system according to claim 2, characterized in that said one or more PLCs (1) comprise means for arranging operating data and alarm signals for the parent operating control system.
    [5]
    System according to one or more of claims 1-3, characterized in that the means for providing measurement data comprise one or more of level gauges (4), flow meters (5, 6) or pressure gauges (7).
    [6]
    System according to one or more of claims 1-4, characterized in that the measurement data are one or more of: level measurements for a tank, pumped amount of liquid out of a tank, pumped amount of liquid out of a tank based on measuring pressure in a pump line.
    [7]
    System according to one or more of claims 1-5, characterized in that the means for providing operating status data from said one or more pumps (3) comprise one or more of: a current meter, a torque meter or a speedometer.
    [8]
    System according to one or more of claims 1-6, characterized in that the output parameters comprise parameters for controlling the application of said one or more pumps (3).
    [9]
    System according to one or more of claims 1-7, characterized in that said one or more computer programs for energy control and monitoring comprise at least: - an algorithm for calculating and registering a pump curve with respect to the pumped amount of liquid and power consumption from said one. or several pumps (3), - an algorithm for detecting downtime and for reporting downtime to the operation control system, - an efficiency analysis algorithm, - an algorithm for calculating and recording a reference characteristic of the system, - an algorithm for calculating and recording it or the most energy-optimal operating points for said one or more pumps (3).
    [10]
    System according to claim 8, characterized in that the algorithm for calculating the most energy-optimal operating points for said one or more pumps (3) comprises: - routines for registering a plurality of operating points for said one or more pumps (3). ) by varying one or more output parameters which control the application of said one or more pumps (3), - routines for continuously storing said plurality of registered operating points, and - routines for analyzing integration of the registrations to find a ratio for pumped liquid quantity / volume in relation to power consumption for said one or more pumps (3), where the highest value for pumped quantity / volume in 10.
    [11]
    11. 16 P11-O310 in relation to power consumption corresponds to the most energy efficient operating point for said one or more pumps (3). System according to one or more of claims 1-8, characterized in that said one or more tensioning means (2) are frequency converters (2). Method for starting (700) a pump in a control and monitoring system for one or more pumps (3), one or more actuating means (2) and one or more PLCs (1) where the pumps (3) have the task of pumping a volume of liquid from one place to another, where the steps are initiated by one or more computer programs for energy management and monitoring, where the program or programs are stored in or associated with one or more PLCs (1), characterized in that the method comprises the steps of: a) checking the start conditions (710) of a pump (3), b) making a choice to initiate a start-up cycle (720) in the program or programs, bi) performing the steps bii to biii in the case of start-up cycle (720) is selected, bii) initiate an elevated start (721), biii) continue in step bii in case a selected elevation period (723) has not expired, biv) continue in step c, c) make a selection to initiate an efficiency analysis ( 730), ci) carry out steps cii to cvi in that case effectively etching analysis is selected, cii) initiate (731) efficiency analysis (730), ciii) check pumped liquid volume and pump (3) power consumption (733), civ) calculate a new start (734) for the pump (3) cv) calculate energy efficiency (737) for the pump (3) based on the amount of liquid pumped and the power consumption of the pump (3), cvi) continue in step ciii in case efficiency analysis is not completed (739), cvii) continue with step d, and d) 17 P 11-0310 initiate normal operation (800).
    [12]
    The method of claim 11, characterized in that step bii, initiating an elevated start (721), further comprises generating a maximum or approximate maximum torque on the pump (3).
    [13]
    A method according to claim 11 or 12, characterized in that step c, initiating an efficiency analysis (730), further comprises the steps of: setting start conditions (732) N, D1 for the efficiency analysis in step cii, i.e. the number of runs N as the efficiency analysis (730) is to be run and detection interval DI, check the pumped liquid quantity and the pump (3)'s power consumption (733) and adjust a boost (734) in relation to the previously registered Most Energy Efficient Point (BEP) register (735) power consumption for the pump (3 ) and pumped liquid quantity until a certain residence time has expired (736), in step cv and record (738) the calculation further, the step of checking whether the efficiency analysis is complete includes checking whether the efficiency analysis, in case n = N the efficiency analysis is completed ( 739), and normal operation (800) can be initiated.
    [14]
    Method for normal operation (800) of a pump in a control and monitoring system for one or more pumps (3), one or more actuators (2) and one or more PLCs (1) where the pumps (3) have for the purpose of pumping a volume of liquid from one place to another, where the steps are initiated by one or more computer programs for energy management and monitoring, where the program or programs are stored in or associated with one or more PLCs (1), characterized in that the method comprises the steps of: a) b) (810) obtaining application (734) from an efficiency analysis, applying (811) the obtained application to said one or more application means (2), C) 18 P11-O310 entering an event detection mode ( 820) or make a shut-off (840) of said one or more pumps (3).
    [15]
    Method according to claim 14, characterized in that the deduction (734) from the efficiency analysis emerges when performing the steps of: setting start conditions (732) N, DI for the efficiency analysis, i.e. the number of runs N that the efficiency analysis (730) is to run and a detection interval D1, check the amount of fluid pumped and the power consumption (733) of the pump (3) and initiate a start (734) corresponding to a maximum start on the pump (3) minus the number of runs of the efficiency analysis (730) run, n, multiplied by D1, record (735) power consumption for the pump (3) and pumped liquid quantity until a certain residence time has expired (736), calculate the energy efficiency (737) of the pump (3) based on pumped liquid quantity and the pump (3) power consumption, and record (738) the calculation further, check if the efficiency analysis is complete by checking if 0 n = N the efficiency analysis is completed (739) and the deduction appears as the last registers calculation (738) in the efficiency analysis.
    [16]
    A method according to claim 14 or 15, characterized in that the event detection mode comprises the steps of: ca) cb) cc) cd) ce) retrieving data from a reference characteristic (821), going into a loop for normal event detection mode comprising; record measurements (822), monitor (823) the control and monitoring system for one or more pumps (3), in case the monitoring (823) shows abnormal operation (828) continue with action loop (829).
    [17]
    Method according to claim 16, 19 P11-0310 characterized in that data to the reference characteristic results in performing a procedure comprising the steps of: i) initiating a program procedure (900) where n = 1 and the parameters N and D1 are determined, ii) registering measurements (910) from measuring means in the system (4, 5, 6, 7, 104.0) to provide measurement data useful for providing a measure of a pumped amount of liquid from said one or more pumps (3) and from means for provide operating status data from said one or more pumps (3), iii) perform calculations (920) to find the energy saving point on one or more pump curves, iv) record the result (930) of the calculations for the energy saving point on said one or more pump curves, check validity and store (931), and v) in case n = N the procedure is terminated.
    [18]
    A method according to claim 17, characterized in that step ii comprises the steps of: - generating an application which is a function of; pumped volume from one or more pumps (3) divided by power consumption for said one or more pumps (3), BEP, added by n multiplied by DI, and - different operating points which are functions of the pump characteristic, i.e. pumped volume and power consumption registered (912) within a registration period within a residence time (913).
    [19]
    A method according to claim 17, characterized in that step iii comprises the steps of: - establishing an integral for instantaneously pumped volume as a function of power consumption (921) and - calculating a ratio (922) from the integral, where the highest value is the most energy efficient operating point for said one or more pumps (3).
    [20]
    A method according to one or more of claims 16-19,
    [21]
    21.
    [22]
    22.
    [23]
    23. characterized in that the step cd for monitoring (823) the control and monitoring system for one or more pumps (3) comprises the steps of: - checking deviations (824) in relation to values from the reference characteristic, where the deviations may be: fast changes (825), slow changes (826) or incorrect characteristics (827). Method according to one or more of claims 16-19, characterized in that the action loop (829) comprises the steps of: - initiating varying direction of rotation (830) on said one or more pumps (3) continuing in step cc of recording measurements (822) , in case the monitoring (823) continues to show abnormal operation (828), the action loop (829) continues to arrange an alarm to an operation control system in communication with the one or more PLCs (1). Method according to one or more of claims 16-21, characterized in that recording of measurements in step cc comprises storing and organizing measurements in one or more tables. Method according to claim 18, characterized in that the step of registering pumped volume and power consumption comprises a registration according to table (Table 1). P 11-0310,
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2018-01-02| NUG| Patent has lapsed|
    优先权:
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    NO20100708A|NO334590B1|2010-05-14|2010-05-14|System and method for adaptive monitoring and control of pump systems|
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