CN117280119A - Control device for activating/deactivating a hydraulic pump and system comprising such a device - Google Patents
Control device for activating/deactivating a hydraulic pump and system comprising such a device Download PDFInfo
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- CN117280119A CN117280119A CN202280034253.3A CN202280034253A CN117280119A CN 117280119 A CN117280119 A CN 117280119A CN 202280034253 A CN202280034253 A CN 202280034253A CN 117280119 A CN117280119 A CN 117280119A
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- 230000003213 activating effect Effects 0.000 title claims description 6
- 230000004913 activation Effects 0.000 claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 238000001994 activation Methods 0.000 claims description 19
- 230000007704 transition Effects 0.000 claims description 6
- 230000001186 cumulative effect Effects 0.000 claims description 5
- 235000014676 Phragmites communis Nutrition 0.000 claims description 4
- 230000009849 deactivation Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- -1 dimensions Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/08—Regulating by delivery pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
- F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
- F04D15/029—Stopping of pumps, or operating valves, on occurrence of unwanted conditions for pumps operating in parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/85—Starting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention relates to a method for controlling/regulating/reducing the output pressure (P work ) Is provided with a control device (D) comprising: a housing (H) defining a fluid inlet (I) and a fluid outlet (O), an inlet Chamber (CI) connected to the inlet (I), an outlet Chamber (CO) connected to the outlet (O), a pressure reducing valve (V1), a pressure sensor (S1) of the outlet (O), a flow sensor (S2), a controller (μ) connected to the sensors (S1, S2), the controller (μ) being configured such that when the pressure sensor (S1) detects a pressure above a determined threshold pressure (P) on ) The pressure (Ps) of (C) is converted to be lower than the threshold pressure (P) on ) When the pressure (Pi) of the hydraulic pump is higher than the pressure (Pi) of the hydraulic pump, an activation signal (B on ) So that the pressure (P work ) Independently of the threshold pressure (P on ). The invention also relates to a device provided with the deviceA system for preparing.
Description
Technical Field
The invention belongs to the field of equipment for controlling the starting and stopping of a pump in a water distribution network, and has advantages in the transient process of activation and shutdown compared with the equipment in the prior art.
Background
In the hydraulic industry, control devices for activating/deactivating hydraulic pumps are known, as described in patent document EP0539721A1, which comprise: a housing defining an inlet and an outlet for the fluid, an inlet chamber connected to the inlet, an outlet chamber connected to the outlet, and a delivery pressure regulating valve disposed between the inlet chamber and the outlet chamber, and a check valve disposed between the inlet and the inlet chamber.
In the apparatus, a flow detector is also provided between the outlet chamber and the outlet. The detector carries a magnet for detection by a sensor disposed within a housing in which is also located an electronic device connected to a PC control panel accessible to a user. The apparatus also includes a pressure detector consisting of a magnet mounted on the valve stem of the regulator valve.
One mode of operation of the device is by detecting a minimum flow. In this mode, if on the demand side, i.e. downstream, the valve or tap is opened, the moving part of the flow detector is moved, the displacement of its magnet being detected by a sensor beside it. The sensor is in turn connected to the control board. The control board sends an activation signal to the pump, which starts "immediately" as described in the above application.
The main disadvantage of this instant reaction capability is that it does not take advantage of the cumulative capabilities of the device, which may lead to more frequent start-up and consequent wear.
Another planned mode of operation is to activate the pump by detecting a minimum pressure by the pressure detector described above, i.e. a detector mounted on the valve stem. In this mode of operation, an activation signal is sent to the pump when a pressure decrease is detected to reach a predetermined activation pressure. Thus, this activation pressure is completely correlated with the regulation pressure and is not adjustable, since the detector is mounted on the regulation valve.
In fact, the two pressures are linked together in an unregulated manner, which may also result in frequent start/stop of the pump. Because the predetermined activation pressure cannot be adjusted and the predetermined activation pressure should in fact be consistent with the adjustment pressure to ensure that the start-up speed is similar to the speed that is activated by flow detection. Any reduction in downstream installation pressure due to this characteristic can result in sudden frequent pump starts and consequent damage to the pump.
Disclosure of Invention
In order to overcome the drawbacks described in the previous section, the present invention provides a control device for activation/deactivation of a hydraulic pump and for adjustment/regulation/reduction of an output pressure, comprising:
-a housing defining a fluid inlet and a fluid outlet therein;
-an inlet chamber connected to the inlet;
-an outlet chamber connected to the outlet;
-a valve for reducing pressure arranged between the inlet chamber and the outlet chamber;
-a check valve arranged between the inlet and the inlet chamber;
-a pressure sensor within the outlet;
-a flow sensor associated with the check valve;
a controller in communication with the sensor and configured to control the sensor,
wherein the controller is configured to send an activation signal to the hydraulic pump such that the output pressure is independent of the threshold pressure when the pressure sensor detects that the pressure above the determined threshold pressure transitions to a pressure below the threshold pressure.
In other words, contrary to the known solutions, the device of the invention enables the start-up pressure (hereinafter P on ) And regulating pressure (hereinafter referred to as P Work ) And (5) disconnecting. Note that such disconnection is not possible in the device described in EP0539721 A1.
The disconnection involves having a pressure sensor at the outlet and being configured to detect the pressure from above a certain threshold pressure (P on ) To an actuation step of a pressure transition below said threshold pressure. That is, the pump does not evolve due to the reverse direction of pressure (i.e., fromA pressure below the threshold pressure transitions to a pressure above the threshold pressure). The command to shut down the pump will come from the absence of detected flow, i.e., the shut down of the pump will be determined by the flow sensor associated with the check valve.
That is, according to the present invention, a constant voltage is ensured in the circuit, and repeated starting of the pump, which may occur in the case of leakage, is minimized, thus achieving stability. Since the invention allows a lower start-up pressure (P ON ) The cumulative capacity of the hydraulic system, i.e. the pressurized head or cumulative capacity of the device, may advantageously be utilized, or the elasticity of the device (including the elasticity of the membranes of the device itself, of the pipes arranged downstream of the device or of the heat accumulating boiler) may be known, for example.
In some embodiments, the controller is configured to automatically adjust the threshold pressure for activation based on the detected operating pressure. Now, slight modifications or readjustments of the device may result in working pressures (P work ) A change occurs and it is contemplated that the microcontroller includes a self-learning function to readjust the threshold pressure for activation.
In some embodiments, the automatic adjustment is performed by establishing a threshold pressure when the device is first used by:
P on ＝P work -Δp(I)
where Δp is a value stored in the controller.
In some embodiments, the detected operating pressure (P work ) Is the pressure detected by the pressure sensor immediately after the flow is interrupted, which is detected by the flow sensor after the pump is stopped.
In some embodiments, the controller is configured to send an alarm signal if it is detected that the pressure detected by the pressure sensor transitions to a pressure below the determined minimum pressure of the pressure loss.
In some embodiments, the controller is configured to send an alarm signal if it is detected that the pressure detected by the pressure sensor has transitioned to a pressure that is higher than the maximum pressure of the excessive pressure determined in the device.
In some embodiments, the controller is configured to send a deactivation signal to the pump in the event that at least a predetermined number of consecutive activations is detected within a predetermined period of time, in order to protect the device in the event of a loss of its cumulative ability.
In some embodiments, the apparatus does not include a flow detector disposed between the pressure regulating valve and the outlet.
In some embodiments, the regulator valve includes a movable valve body, a valve seat, a spring, and a regulator screw for the force of the spring.
In some embodiments, the flow sensor associated with the check valve is comprised of a magnet mounted on the check valve and a detector of the magnet mounted on the controller, preferably a hall sensor or reed switch.
Preferably, the inlet and outlet are arranged on the same axis, advantageously the device comprises a casing of the casing, which is arranged opposite the regulating valve with respect to the axis, in which casing the controller is housed.
In some embodiments, the controller is distributed between a control board and a power panel that are connected to each other, the control board is provided with a user interface, and the power panel is provided with a power electronic component.
Finally, the pressure sensor is a pressure transducer, although it may also be a mechanical pressure sensor.
Drawings
To supplement the description and to help better understand the features of the invention, a set of non-limiting drawings are attached as part of the description for illustrative purposes, according to practical implementation examples thereof, as follows:
FIG. 1 is a perspective view of an apparatus according to the present invention;
FIG. 2 is a portion of an apparatus that allows for understanding of the arrangement of components;
FIG. 3 shows the relevant pressures and their relative values to understand the operation of the device;
fig. 4 shows another section according to the cut-out, which section allows an understanding of the arrangement of the pressure sensor of the outlet;
FIG. 5 shows an embodiment of a detector in which the apparatus includes an open position of a regulator valve;
FIG. 6 shows a system for controlling two pumps in parallel with a single device according to the present invention;
fig. 7 shows a system according to the invention for controlling two pumps in parallel with two interconnected devices.
Detailed Description
First, the following pressures are defined to understand the operation of the device:
P work : is the regulating pressure or working pressure of the device. It is a pressure that can be regulated by the apparatus (and therefore also called regulated pressure) that will be determined by the means arranged downstream, the pump, the apparatus itself and in particular the degree of closure of the valve for reducing the pressure, on which the installer can take action. In fig. 3, 3 bar is given as an example of this pressure.
P on : is a threshold value (adjustable) stored in the memory of the controller μ, which is lower than the operating pressure. Which is a pressure value to which a pressure value measured by a pressure sensor provided at the outlet of the apparatus is compared. In fig. 3, 1.5 bar is given as an example of this pressure.
P AL1 : is the value stored in memory (also adjustable) compared to the minimum pressure below which the system is considered not to operate to protect the pump. In fig. 3, 0.5 bar is given as an example of this pressure.
P AL2 : is the value stored in memory (also adjustable) compared to the maximum pressure above which the system should not work to protect the devices arranged downstream of the device D. Fig. 3 shows as an example that the pressure is 6 bar.
As shown in fig. 1 and 2, the present invention relates to a method for activating/deactivating a hydraulic pump and for regulating/adjusting/reducing an output pressure P work Is provided, which includes:
a housing H in which an inlet I and an outlet O for the fluid are defined; the housing H accommodates and protects the components of the device.
An inlet chamber CI connected to inlet I;
an outlet chamber CO connected to the outlet O;
a valve V1 for reducing the pressure arranged between the inlet chamber CI and the outlet chamber CO;
a non-return valve V2 arranged between the inlet and the inlet chamber CI;
-a pressure sensor S1 in the outlet O;
-a flow sensor S2 associated with the check valve V2; it is emphasized that this is a sensor in the most general sense that has at least the ability to detect a minimum flow, i.e. no matter whether there is flow or not.
-a controller μ connected to the sensors S1, S2. The controller is a unit comprising control components, which are understood to be those components that manage information (including user input), and power components, which are understood to be those components associated with higher power signals, such as relays, power sockets, connectors, coils or capacitors.
According to the invention, the controller μ is configured to, when the pressure sensor S1 detects a pressure higher than a determined threshold pressure P on Is converted to a pressure Ps lower than the threshold pressure P on At pressure Pi of (2), an activation signal B is sent to the hydraulic pump on So that the pressure P is output work Independently of the threshold pressure P on 。
As shown in fig. 3. Mention of upper pressure P S And a down force P I For the purpose of explanation, when the detected pressure drops, this is due to pressure P on The step detection is performed (as indicated by the downward arrow in fig. 3). That is, these are not predetermined pressures, but measured pressure values, which are associated with P on Will result in a start signal sent by the device D (in particular by its controller mu) to the pump.
According to another embodiment, the controller μ is configured to respond to the detected operating pressure P work Automatically adjusting threshold pressure P for activation on . Since the operating pressure is a value corresponding to a particular operating point of the demand/supply set, it cannot be predicted a priori. Thus, a first auto-calibration procedure is provided, comprising: operating the system and measuring the operating pressure P work It will then be apparent that the establishment is then made for subsequent operation of the deviceThreshold pressure P for activation below operating pressure on 。
One way to perform the automatic adjustment when the device is first used is to establish the threshold pressure P by on ：
P on ＝P work -Δp(I)
Where Δp is a value stored in the controller μ.
This operation may also be performed manually by the user.
It is emphasized that as the detected working pressure P work It is also conceivable that the pressure detected by the pressure sensor S1 after the flow rate interruption is detected by the flow rate sensor S2 after the pump is stopped.
According to another advantageous function of the device, the controller μ is configured to, if it is detected that the pressure detected by the pressure sensor S1 transitions to a pressure P below the determined minimum pressure of the pressure loss AL1 And/or sending an alarm signal and/or stopping the pump. Fig. 3 shows that this pressure is lower than the other pressures. This may be due to significant breakage of the downstream tubing of the device.
According to another additional function, the controller μ is configured to, if it is detected that the pressure detected by the pressure sensor S1 is converted into a maximum pressure P higher than the excessive pressure determined in the device AL2 And/or sending an alarm signal and/or stopping the pump. This is a higher pressure than all other pressures. The high pressure conditions may occur due to breakage of the regulating device itself, which is no longer satisfactory for the purpose of depressurizing.
As shown in fig. 2, and as known per se, the regulating valve V1 comprises a movable valve body VM1, a valve seat VS1, a spring S and a regulating screw TV1 of the force of the spring S.
Regarding the flow sensor S2 associated with the check valve V2, it is composed of a magnet M1 mounted on the check valve V2 and a detector DM1 of the magnet M1 mounted on the controller μ, the detector DM1 preferably being a hall sensor or reed switch.
The housing HE of the housing H, in which the control μ is housed, is also a known arrangement per se, is arranged opposite the regulating valve V1 with respect to the axis Γ. At present, it is preferable that the controller μ is distributed between a control board μ 1 and a power board μ 2 connected to each other, the control board μ 1 being provided with a user interface HMI, and the power board μ 2 being provided with power electronic components.
As shown in fig. 4, the pressure sensor S1 is a pressure transducer connected to the outlet of the apparatus by a conduit.
According to another embodiment of the invention, as shown in fig. 7, two or more devices may be connected to provide a pressure set with two or more pumps to increase the downstream flow supply capacity at constant pressure. These pumps will operate in a cascade and alternating fashion in the start-up sequence.
In this case, the operation sequence will be described as follows:
between the control circuit of the device 1D1 and the control circuit of the device 2D2, there are two devices connected by a cable. In this way, the inventive software will be able to obtain the operating information of both devices and make the different decisions necessary for the proper operation of the pressure set.
Initially, by adjusting the screw, both devices are adjusted to the same PWORK pressure (this will be reflected on the hands of the timepiece). As regards PON pressure, it can be configured manually on each device or it can be determined by software according to PWORK pressure, in any case the pressures of the two devices being identical.
When the downstream device starts to have a consumption demand, the first pump B1 will be put into operation by the apparatus 1D 1. This will maintain the downstream pressure constant as long as the consumption remains within the flow profile of the first pump B1 (controlled by the device 1D 1). When the consumption increases and exceeds the supply capacity of the first pump B1, the pressure PWORK will not be maintained, so the pressure sensor of the device 1 will detect such a pressure loss and the electronic circuit will send an activation signal to the device 2D2, thus activating the second pump B2.
When the opposite occurs, i.e. the water consumption is reduced, until the use of the second pump is no longer necessary, the system has to decide when to dispense with one of the two pumps. For this purpose, the device must be able to analyze the drop in power consumption of the pump and make the decision by means of a suitable algorithm. The process includes detecting the power consumption of the second pump B2 when the second pump B2 is started, and stopping the second pump B2 when it is detected that the power has fallen below a preset value.
To this end, the device has several sensors to regulate the operation of the second pump B2 of the pressure group, as illustrated in fig. 5:
-the pressure sensor S1 mentioned above;
-a flow sensor S2;
-a current sensor DM4.
As shown in fig. 2, flow sensing is controlled by a flow sensor, preferably a hall effect sensor or reed switch, fitted with a magnet M1 and a detector of said magnet DM1, to stop operation of the pump when flow ceases to pass through the device (due to closing all downstream consumption points).
The circuit of the device of the invention enables analysis of the power consumption of the pump by means of a current sensor. The power is proportional to the flow through the pump, the greater the power the greater the flow the pump must move. With this detector, the device is able to analyze the flow being used at any time.
According to another embodiment of the invention, as shown in fig. 6, a single device D may be electrically connected to both pumps and hydraulically connected to a manifold in flow communication with both pumps to enable the pressure set to operate in "duty-standby" mode at constant pressure. In this type of system, the two pumps are never operated simultaneously, but are operated alternately. The redundancy of the pumps allows to guarantee the supply of water in case of failure of one of them. The alternation of the start-up sequence ensures that the ageing of the pump is similar.
This can be achieved by using two separate relays and developing appropriate software.
In summary, the apparatus of the present invention has the following advantages over known systems having a variable speed controller:
1/electronically, the device is a more robust system due to the simplicity of the circuit. The circuit of the invention is a circuit that controls only the start and stop of the pump, whereas in a variable frequency system the complexity of the circuit is much greater.
The 2/frequency conversion device needs to cool the power supply module to dissipate the heat it generates during switching. In the device of the invention this is not necessary, since the motor is started by means of a relay.
3/in the device of the invention no electromagnetic interference is generated as in the device managed by the frequency converter.
All these advantages enable the device to:
-robustness is greater;
-more compact;
-low maintenance;
the final cost of the system is significantly reduced.
In this document, the terms "comprises" and its variants (e.g., "comprising" etc.) are not to be construed in an exclusive manner, that is, the terms do not exclude the possibility of other elements, steps, etc. being described.
On the other hand, the invention is not limited to the specific embodiments that have been described, but also includes variants that can be implemented, for example, by an average expert in the field, for example, with regard to the choice of materials, dimensions, components, configuration, etc., within the scope of what is explicitly stated in the claims.
Claims (19)
1. For activating/deactivating a hydraulic pump and for regulating/reducing an output pressure (P work ) Is provided with a control device (D) comprising:
-a housing (H) in which an inlet (I) and an outlet (O) for the fluid are defined;
-an inlet Chamber (CI) connected to said inlet (I);
-an outlet Chamber (CO) connected to said outlet (O);
-a valve (V1) for reducing the pressure arranged between the inlet Chamber (CI) and the outlet Chamber (CO), the valve (V1) allowing to establish a regulating pressure (P) work )；
-a check valve (V2) arranged between the inlet and the inlet Chamber (CI);
-a pressure sensor (S1) of said outlet (O);
-a flow sensor (S2) associated with the check valve (V2);
a controller (mu) connected to the sensors (S1, S2),
characterized in that the controller (μ) is configured to, when the pressure sensor (S1) detects a pressure higher than a determined threshold pressure (P on ) Is converted to a pressure (Ps) lower than the threshold pressure (P on ) Sends an activation signal (B) to the hydraulic pump at a pressure (Pi) on ) So that the regulating pressure (P work ) Independently of the threshold pressure (P on )。
2. The apparatus of claim 1, wherein the controller (μ) is configured to determine, based on the detected operating pressure (P work ) Automatically adjusting the threshold pressure (P on )。
3. The apparatus according to claim 2, wherein the threshold pressure (P on ) Automatic adjustment is performed:
P on ＝P work -Δp(I)
where Δp is a value stored in the controller (μ).
4. The device according to claim 2, the detected operating pressure (P work ) Is the pressure detected by the pressure sensor (S1) immediately after the flow is interrupted by the flow sensor (S2) after the pump is stopped.
5. The device according to any of the preceding claims, wherein the controller (μ) is configured to, if it is detected that the pressure detected by the pressure sensor (S1) transitions to a pressure (P) below the determined minimum pressure of the pressure loss al1 ) An alarm signal is sent and/or the pump is deactivated.
6. The apparatus of any preceding claim, wherein the controller (μ) is configured to, if detected by the controller (μ)The pressure detected by the pressure sensor (S1) is converted into a maximum pressure (P) higher than the excessive pressure determined in the device al2 ) An alarm signal is sent and/or the pump is deactivated.
7. Apparatus according to any one of the preceding claims, wherein the controller (μ) is configured to send a deactivation signal to the pump in case at least a predetermined number of consecutive activations is detected within a predetermined period of time, in order to protect the device in case of a loss of its cumulative capacity.
8. The apparatus of any preceding claim, not comprising a flow detector arranged between the pressure regulating valve (V1) and the outlet (O).
9. The device (D) according to any one of the preceding claims, wherein the regulating valve (V1) comprises a movable valve body (VM 1), a valve seat (VS 1), a spring (S) and a regulating screw (TV 1) of the force of the spring (S).
10. The device (D) according to any one of the preceding claims, wherein the flow sensor (S2) associated with the check valve (V2) is constituted by a magnet (M1) mounted on the check valve (V2) and a detector (DM 1) of the magnet (M1) mounted on the controller (μ), the detector (DM 1) preferably being a hall sensor or a reed switch.
11. The device (D) according to any one of the preceding claims, wherein said inlet (O) and said outlet (S) are arranged on the same axis (Γ).
12. The device (D) according to claim 11, comprising a casing (HE) of the casing (H), said casing (HE) being arranged opposite to the regulating valve (V1) with respect to the axis (Γ), the controller (μ) being housed in said casing (HE).
13. Device (D) according to any of the preceding claims, wherein the controller (μ) is distributed between a control board (μ 1) and a power board (μ 2) connected to each other, the control board (μ 1) being provided with a user interface (HMI) and the power board (μ 2) being provided with power electronic components.
14. The device according to any of the preceding claims, wherein the pressure sensor (S1) is a pressure transducer.
15. The device according to claim 13, wherein the controller (μ) is configured to manually adjust the threshold pressure (P) for activation through the user interface (HMI) ON )。
16. The device according to any of the preceding claims, comprising a current sensor (DM 4), said current sensor (DM 4) allowing to indirectly measure the power consumed by the pump controlled by the device.
17. A system comprising at least two pumps (B1, B2) arranged in parallel, the system comprising a device (D) according to any one of claims 1 to 17, the device (D) being common to both pumps and being arranged downstream of both pumps, optionally through a Collector (COL) arranged between the device (D) and the pumps (B1, B2).
18. The system of claim 17, wherein the device is configured to activate alternately two pumps (B1, B2).
19. A system comprising at least two pumps (B1, B2) arranged in parallel, each pump comprising a device (D1, D2) according to any of claims 1 to 17 arranged downstream, and optionally a Collector (CDL) arranged downstream of the devices (D1, D2), wherein the devices (D1, D2) are configured and coordinated such that one of the alternative pumps (B1, B2) is started first, while the second pump (B2, B1) is started only if the other pump (B1, B2) is not able to meet the demand.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ESU202130643 | 2021-03-29 | ||
| ES202130643U ES1275679Y (en) | 2021-03-29 | 2021-03-29 | Hydraulic pump on / off control device |
| PCT/ES2022/070182 WO2022207949A1 (en) | 2021-03-29 | 2022-03-29 | Device for controlling the turning on and off of a hydraulic pump, and system provided with this device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117280119A true CN117280119A (en) | 2023-12-22 |
Family
ID=77057212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280034253.3A Pending CN117280119A (en) | 2021-03-29 | 2022-03-29 | Control device for activating/deactivating a hydraulic pump and system comprising such a device |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4317688A1 (en) |
| CN (1) | CN117280119A (en) |
| ES (1) | ES1275679Y (en) |
| MX (1) | MX2023011542A (en) |
| WO (1) | WO2022207949A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1251968B (en) | 1991-10-21 | 1995-05-27 | Watertech Srl | APPARATUS TO CONTROL THE STARTING AND STOPPING OF A WATER DISTRIBUTION NETWORK PUMP. |
| WO2003074873A1 (en) * | 2002-03-04 | 2003-09-12 | Watertech, S.P.A. | Apparatus for on/off controlling a pump in a liquid distribution network |
| US20120039723A1 (en) * | 2009-02-13 | 2012-02-16 | Joel Dylan Gresham | Controller for a liquid supply pump |
| ITFI20120079A1 (en) * | 2012-04-20 | 2013-10-21 | Trevi Engineering S R L Unipersona Le | "APPARATUS FOR CHECKING THE START-UP AND STOPPING OF A PUMP OF A WATER DISTRIBUTION NETWORK" |
| ES2620685B1 (en) * | 2016-10-18 | 2018-04-12 | Coelbo Control System, S.L. | SYSTEM THAT INCLUDES TWO OR MORE PUMPS CONNECTED IN PARALLEL AND PRESSURE CONCEPTED TO OPERATE IN SUCH SYSTEM |
| AU2020280118A1 (en) * | 2019-05-22 | 2021-12-16 | White International Pty Ltd | A pump controller |
-
2021
- 2021-03-29 ES ES202130643U patent/ES1275679Y/en active Active
-
2022
- 2022-03-29 CN CN202280034253.3A patent/CN117280119A/en active Pending
- 2022-03-29 MX MX2023011542A patent/MX2023011542A/en unknown
- 2022-03-29 EP EP22779201.7A patent/EP4317688A1/en active Pending
- 2022-03-29 WO PCT/ES2022/070182 patent/WO2022207949A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022207949A1 (en) | 2022-10-06 |
| MX2023011542A (en) | 2023-10-06 |
| EP4317688A1 (en) | 2024-02-07 |
| ES1275679U (en) | 2021-08-02 |
| ES1275679Y (en) | 2021-10-27 |
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