CN103380304A - Compressed air maintenance unit, and consumer control device equipped with the same - Google Patents
Compressed air maintenance unit, and consumer control device equipped with the same Download PDFInfo
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- CN103380304A CN103380304A CN2012800104584A CN201280010458A CN103380304A CN 103380304 A CN103380304 A CN 103380304A CN 2012800104584 A CN2012800104584 A CN 2012800104584A CN 201280010458 A CN201280010458 A CN 201280010458A CN 103380304 A CN103380304 A CN 103380304A
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- pressurized air
- air maintenance
- maintenance tool
- control unit
- electronic control
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- 238000012423 maintenance Methods 0.000 title claims abstract description 79
- 230000004913 activation Effects 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims description 45
- 238000004891 communication Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 18
- 238000003745 diagnosis Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 10
- 230000000052 comparative effect Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 230000008054 signal transmission Effects 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000001595 flow curve Methods 0.000 claims description 4
- 230000011664 signaling Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000007858 starting material Substances 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 2
- 230000006870 function Effects 0.000 description 11
- 238000005259 measurement Methods 0.000 description 9
- 239000012530 fluid Substances 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 230000003213 activating effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
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- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 210000000635 valve cell Anatomy 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
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- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/002—Calibrating
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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
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/048—Arrangements for compressed air preparation, e.g. comprising air driers, air condensers, filters, lubricators or pressure regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
- F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/632—Electronic controllers using input signals representing a flow rate
- F15B2211/6323—Electronic controllers using input signals representing a flow rate the flow rate being a pressure source flow rate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/857—Monitoring of fluid pressure systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/88—Control measures for saving energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/885—Control specific to the type of fluid, e.g. specific to magnetorheological fluid
- F15B2211/8855—Compressible fluids, e.g. specific to pneumatics
Abstract
Proposed are a compressed air maintenance unit (2) and a consumer control device (1) equipped with the same, wherein the compressed air maintenance unit (2) has an activation valve (14) with 3/3-way valve functionality. By means of the activation valve (14), an outlet duct (22) leading to a consumer device (A) can inter alia be selectively supplied with compressed air or decoupled from the compressed-air supply. By means of a pressure sensor (24) and/or a throughflow sensor (25), it is possible for current information regarding the pressure and/or the throughflow to be recorded and compared with reference information previously stored in a teaching mode. As a function of the result of the comparison, it is possible for an electrical diagnostic signal to be generated such that it is possible inter alia for leakage or excessive air consumption in the consumer device (A) to be monitored.
Description
Technical field
The present invention relates to a kind of pressurized air maintenance tool (Druckluft-Wartungsger t), it has following constituent element:
But the connection valve (Einschaltventil) of-electrically operated, it has the supply entrance (Speiseeingang) that can be connected with source of compressed air, the vent outlet that is connected with atmosphere (Entl ü ftungsausgang) and exit from do (Arbeitsausgang) and its and switches in exit from do and the working position that the supply entrance is connected and to in exit from do and the vent position that vent outlet is connected
-instrument the exhaust port (Ger teauslass) that can be connected with the customer device (Verbrauchereinrichtung) of outside, it is connected with the exit from do of connecting valve via discharge route (Auslasskanal),
-be suitable for measuring the pressure transducer of the head pressure that in discharge route, exists and/or be suitable for measuring the flow transducer of the discharge flow rate that in discharge route, occurs,
-and inner electronic control unit, it is connected and it can move in monitoring mode at signalling technique with the connection valve and with pressure transducer and/or flow transducer.
The present invention relates to a kind of customer control gear (Verbrauchersteuervorrichtung) that is suitable for controlling the customer device in addition, and it is equipped with at least one pressurized air maintenance tool of aforementioned type and connect or the attachable electric control device in its place.
Background technique
The prior art of constructing in aforementioned meaning is known from file DE 19746179 C2.Relate to a kind of pressurized air maintenance unit at this, but its fluid be connected to the customer device place that treats with pressurized air supply.The pressurized air maintenance unit is formed by a plurality of module assembleds, and they can be arranged with number each other in any order.One module structure of known pressurized air maintenance unit is monitoring module, and it has the electronics central location and can be connected to outside bus system place via corresponding interface.Monitoring module can be provided with indication and operating element or alternatively can have for the indication of outside and diagnosis and the operation-interface of operation equipment in this.The pressure transducer that is used for Pressure testing is connected to the central location place at monitoring module.The flow measuring meter module that is used for the measurement air mass flow can be used as another module existence of pressurized air maintenance unit.At last, known pressurized air maintenance unit comprises the switch valve module (Schaltventilmodul) that is equipped with the connection valve, can let pass or block the pressurized air of supplying with at inlet side by means of it.Usually, connect valve and also have tee-joint function (Dreiwegefunktion), so that it occupies vent position when pressurized air is blocked, exit from do is connected with atmosphere in this position, thereby the customer device that the discharge route that is connected to the exit from do place is comprised be connected to its place ventilates.
By the known a kind of pressurized air attending device of file DE 102004005982 B3, it is formed by a plurality of module assembleds, for example exists under these modules and connects valve, flow measuring meter, control module or monitoring module.Also can exist for Pressure testing or be used for the sensing device of flow detection.
File DE 10355250 Al have illustrated a kind of method and a kind of affiliated device for determining at the equipment that is equipped with clutch release slave cylinder to leak.The pressure transducer of the pressure of this device inclusion test pressure medium wherein, is determined the loss of pressure medium based on pressure surge.Additionally, be arranged in the volume flowrate of the pressure medium that the volume flow sensor in the supply pipeline detect to flow, wherein, based on physical equation pressure measuring value and volume flow measurement value are taken in certain to each other relation, in order to determine the leakage of appearance based on this.
Known usage monitoring device is used for the system of monitoring period sex work from file WO 95/19589 A1.
The pressurized air maintenance tool of the type that beginning is mentioned is equipped with the connection valve usually, and it has two possible switching positions.The first switching position is designed to the working position and sets up being connected of customer device of supply entrance and exit from do and outside that therefore extremely connect.In the second switching position, the supply entrance separates with exit from do.If the second switching position is vent position, discharge route is ventilated with the customer device of the outside that is connected to its place.The connection valve of other type is locked at discharge route in the second switching position fully, thereby can not ventilate.Yet aspect ventilation function is important in the pressurized air supply of the customer device that connects.
For disadvantageously this state of so far pressurized air maintenance tool (it is connected valve and has vent position), namely in the operation halted state of the customer device of the outside that connects, record unwanted air consumption.Rest in the working position if namely connect valve, although then the customer device does not move pressurized air and is forced in the discharge route under higher pressure enduringly, a pressurized air part since inevitably leakage loses.If be switched in the vent position and connect valve, being emptied completely of discharge route and the customer device that is connected to its place occurs, so that emptying channel system at first again must be by fully filling when the customer device moves beginning recently.For the viewpoint of energy aspect, such state that triggers outside customer that is accompanied by no longer conforms with the epoch.
Summary of the invention
The objective of the invention is to take to make the favourable operation in energy aspect of the customer device that moves with pressurized air to become possible measure.
In order to realize this purpose, in the pressurized air maintenance tool of the type that beginning is mentioned, be arranged to:
-connecting valve, to have 3/3 valve functional and additionally switch in the lock position, and its exit from do that is connected with the instrument exhaust port not only is separated with the supply entrance but also with vent outlet in this position,
-inner electronic control unit is during the lock position and/or alternatively during the working position can move with mode of learning in monitoring mode, in mode of learning can determine during the lock position head pressure about the pressure drop of time and/or during the working position, can determine discharge flow rate about the flow curve of time and can be stored in the form of reference information in the memory device of inner electronic control unit
-inner electronic control unit has comparator device, by its actual information that can during monitoring mode, be provided by pressure transducer and/or flow transducer and affiliated reference information comparison,
-and the internal electron control unit have output device, it can be according to the comparative result of comparator device output electric-diagnosis signal.
Realize in this external a kind of customer control gear of this purpose that it has the pressurized air maintenance tool of such design and the electric control device that connect or attachable outside in its place.
Thought of the present invention comprises that the pressurized air maintenance tool is equipped with not only pressure transducer but also flow transducer, and perhaps still (according to the type of desired monitoring) only has pressure transducer or only have flow transducer.
Concept " flow " is typically and in order to use and represent the flow of per time unit such as the simplification of " volume flowrate ", " turnover rate (Str mungsrate) " or " flow rate (Durchflussrate) " to correct concept itself.
Of the present invention one special measure is that the connection valve constitution with tee-joint function is 3/3 access valve and always can occupies three alternative switching positions.At this advantageously, except standard compliant possible working position, optionally can realize vent position or lock position, so that the pressurized air of customer device that will be arranged in discharge route and be connected in the outside at its place is optionally discharged fully or the of short duration operation stopping period of customer device externally is locked as the volume of sealing.In the situation of the advantage of the possibility of not abandoning ventilating, therefore can between the of short duration down period of the machine that for example works as the customer device, not only avoid discharging channel system unwanted emptying of side but also avoid excessive leakage.This effectively moves the energy aspect becomes possibility.
Another contribution that efficient is improved optionally provides can be in mode of learning or the electronic control unit of the inside of moving in monitoring mode.When the pressure transducer of the inside by the pressurized air maintenance tool and/or flow transducer were determined with the pressurized air state that departs from the normal in other words tolerable value of expecting in service, the electronic control unit of the inside that can move in monitoring mode made the output of the electric-diagnosis signal that can utilize arbitrarily become possibility.The running state that departs from can be based on leaking or based on the fault of the parts of the customer device of the outside that connects.Especially effectively monitoring makes it to become possibility thus, namely inner electric control device (especially combining with the first debugging (Erstinbetriebnahme) of the customer device of the outside that connects) can move in mode of learning, so that individually about pressure and/or discharge record reference information, its during the monitoring mode of subsequently the electronic control unit in inside in service, can be used to the measured actual information of reality relatively.Therefore the monitoring function of pressurized air maintenance tool can be complementary with corresponding application very neatly.
In the situation of applying pressure sensor, especially exist the pressure drop of connecting monitoring head pressure during the lock position of valve and by with the more in case of necessity possibility of output warning sign when pressure drop is too fast of the reference information of imparting knowledge to students.For example can monitor the leakage of the customer device of the outside that is formed by machine in this mode.
By means of the information that is provided by flow transducer, can infer the air consumption of raising of the customer device of the outside that connects for the connection valve that is arranged in the working position, for example as about the whole service circulation of customer device or also about the integrated information (Pauschalinformation) of certain subcycle of operation circulation.
Preferably, the pressurized air maintenance tool is constructed with the form of element of construction of certainly carrying, is integrated with therein its whole parts, thereby exists extremely compact and can be integrated into simply pressurized air maintenance unit in the existing compressed air network.
When the pressurized air maintenance tool was equipped with flow transducer (its based on determined force value, especially determine turnover rate based on determined pressure difference), the pressure transducer that belongs to flow transducer also can be used as the pressure transducer for detection of the head pressure that exists simultaneously in discharge route.More than independent pressure transducer is so much.
The pressurized air maintenance tool directly is equipped with aptly visual detector spare and/or the aural alert device is arranged, and it can be based on the electric-diagnosis signal manipulation that is produced by output device, in order to directly point out problematic running state then and there.
Aptly, the pressurized air maintenance tool is configured so that the electric-diagnosis signal that is produced by it can externally process.For this purpose, the pressurized air maintenance tool can be equipped with at least one communication interface, and the electric control device of the outside of especially working as higher level's control device and/or the electronic equipment that electronic information reads instrument and/or the outside that at least one is other can be connected to this communication interface place.For example, can have two communication interfaces, one of them can be used for the electric control device communication with the outside, and another can be used as diagnose interface and is used to read instrument with information and is connected.Corresponding communication interface is dynamo-electric type preferably, this make very reliably signal transmission becomes possibility, especially via the cable that can be connected to its place.Preferably, at least one in the communication interface is designed to EBI, in order to allow to connect the external bus that passes to outside electric control device, wherein, can use arbitrarily bus standard.
In an alternative form of implementation, equip at least one communication interface and be used for wireless signal transmission, the wireless network that is particularly useful for the trouble report (St rungsmeldung) via mobile wireless network (Mobilfunknetz) and/or is used for other connects (Netzwerkanschluss).
Particularly advantageous is that this at least one communication interface is designed so that two-way signal transmission may.
At least one communication interface can be configured to input and/or output binary signal and/or analogue signal.Such communication interface especially is additional to the communication interface that is configured to EBI and exists.
The conversion instruction of be used for connecting valve is transported to the pressurized air maintenance tool here and aptly from the outside from the electric control device of the outside that is connected.Inner electronic control unit only must work as the transmission mechanism (ü bermittler) of switching signal in this case, and need not also process especially switching signal.This reduced this at least one belong to the load of the microprocessor of inner electric control device.
For activation and/or the parametrization of mode of learning, the pressurized air maintenance tool is equipped with suitable entering apparatus aptly.Such entering apparatus for example comprises at least one button and/or at least one switch, and its housing at the pressurized air maintenance tool is in the outside and can closely arranges easily.Addedly or additionally, also arranging can the pure possibility of electrically learning or imparting knowledge to students, for example via special operating instrument or by usually and the electric control device of the outside of pressurized air maintenance tool communication, for this purpose pressurized air maintenance tool can have at least one electric interfaces, it especially can be formed by in the communication interface of having mentioned.
During the monitoring mode of the electronic control unit of inside required actual information aptly with the identical time lag record during mode of learning of reference information before.
Inner electric control device is according to method of operation single or multiple ground or repeatedly record termly actual information only during monitoring mode.
The startup of action that the electric-diagnosis signal yet can be used to determine except being used for pure operation monitoring, that especially Security is relevant.Thus, the pressurized air maintenance tool for example can be configured to cause the transfer process of connecting valve according to the comparative result of comparator device.For example when surpassing the long time period during the working position when not having noticeable flow in discharge route, to be detected, can cause that connecting valve is transformed in the lock position.
Description of drawings
Next elaborate with reference to the accompanying drawings the present invention.Unique accompanying drawing (Fig. 1) has shown with the preferred structure according to customer control gear of the present invention according to the pressurized air maintenance tool of suitable especially structure of the present invention that is integrated in wherein with schematic diagram.
Embodiment
Comprise preferably with at least one pressurized air maintenance tool 2 of the formal construction of the element of construction of carrying certainly as critical piece at its customer control gear of indicating with reference character 1 on the whole.This pressurized air maintenance tool 2 can be unified into pressurized air preparation device 4 with other maintenance module (one of them represents with chain line with 3) when needed jointly.As at least one other maintenance module, for example consider pressure adjusting module, filtering module and/or air irradiation modules.
Pressurized air maintenance tool 2 has the Instrument shell 5 that is reduced to shown in the framework, the other parts of its carrying and/or encirclement pressurized air maintenance tool 2.
There are instrument inlet port 6, instrument exhaust port 7 and ventilation outlet (Entl ü ftungsauslass) 8 at Instrument shell 5 outside places.Instrument inlet port 6 is configured to be connected with source of compressed air P via the fluid circuit that is called supply line.Drawn the state that is connected to instrument inlet port 6 places of such source of compressed air P.
Instrument exhaust port 7 is constructed to be permeable to connect fluid circuit customer device A, that be called working line 13 that passes to the outside.Point out a state, customer device A (machine that for example has a plurality of fluid actuated workpieces) is connected to instrument exhaust port 7 places therein.
But pressurized air maintenance tool 2 has multi-way valve (Mehrwegeventil) electrically operated, be called as " connection valve " 14 based on its function.Connecting valve 14 is placed in the inside of Instrument shell 5 aptly.It has 3/3 valve functional, namely have three paths in other words interface and three possible switching positions.Exemplarily its design with unique valve cell realizes, wherein, yet it also can be realized by the suitable interconnection (Verschaltung) of a plurality of valve cells than low-function.Preferably, connecting valve 14 is valves of electropneumatic pre-control, yet it also can be configured to the directly valve of electrically operated.
Connect valve 14 and have the first switching position that exemplarily is designed to the neutral position, it as seen from the figure.Set out thus, but can it optionally be transformed in the second switching position or the 3rd switching position by one among two valve actuator 15a, the 15b optionally activating respectively electrically operated.The second and the 3rd switching position keeps respectively electrically activated so long-time such as associated valve actuator 15a, 15b. Electric valve actuator 15a, 15b be calutron especially, wherein, yet also can use the electrical driver spare of other type.
Three interfaces connecting valve 14 form supply entrance 16, exit from do 17 and vent outlet 18.Supply entrance 16 is connected with instrument inlet port 6 enduringly or directly forms it.Exit from do 17 is connected with ventilation outlet 18 enduringly or directly forms it.Exit from do 17 is in via the discharge route 22 of the inside of pressurized air maintenance tool 2 and instrument exhaust port 7 and is connected.Discharge route 22 stretches in the inside of Instrument shell 5 aptly.
Connect valve 14 and can occupy the lock position, it is exemplarily corresponding to the neutral position that exists in unsteered state.At this, exit from do 17 not only is separated with supply entrance 16 but also with vent outlet 18.In this mode, discharge route 22 lockings and be arranged in working line wherein and that be positioned at customer device A 13 and be connected in the fluid volume of channel system at its place locked.
Other two possible switching positions connecting valve 14 limit working position and vent position.In the working position, exit from do 17 is connected with supply entrance 16 and is separated with vent outlet 18 simultaneously.In vent position, exit from do 17 is connected with vent outlet 18 and is separated with supply entrance 16 simultaneously.Therefore, supplied discharge route 2 and ventilate towards atmosphere in vent position with its joining customer device A from the pressurized air of compression air-source P since in connecting the working position of valve 14.
Connecting valve 14 was maintained in the working position during the working time of the customer device A that connects.Customer device A single ground or periodically finish default operation circulation during this working time.The process of this operation circulation is controlled by outside electric control device 23 (it is communicated with customer device A on control technique in the mode of further not drawing).
If customer device A should not by operation, for example at the operation stopping period at weekend, can switch in the vent position connecting valve 14, thereby make customer device A ventilation and can not produce dangerous situation on the long time period.
At the operation stopping period of only short time of customer device A, connect valve 14 and can be positioned in the lock position.Thus, the volume of air that exists in customer device A keeps and again can be for up-to-date operation starting (Betriebsaufnahme).Therefore saved with pressurized air again complete filling customer device A.
Pressurized air maintenance tool 2 is equipped with pressure transducer 24 and flow transducer 25 is arranged.Two sensors 24,25 are arranged in the inside of Instrument shell 5 aptly.In addition, two sensors 24,25 and discharge route 22 communications, wherein, pressure transducer 24 exemplarily is connected to discharge route 22 places and in the route of flow transducer 25 access discharge routes 22.
When the principle of measurement of flow transducer 25 during based on Pressure testing, the pressure transducer that belongs to flow transducer 25 also can be born the function of aforementioned pressure sensor 24, thereby can save independently pressure transducer 24.
Pressurized air maintenance tool 2 comprises the electronic control unit 26 of the inside in the inside that preferably is placed in Instrument shell 5, and it is equipped with in other words microcontroller of at least one microprocessor.In order to simplify, next it also only be called as " inner control unit 26 ".
Pressurized air maintenance tool 2 is equipped with the electric interfaces that next is called the first communication interface 28 for better differentiation, and it makes the signalling technique communication between the electric control device 23 of the control unit 26 of inside and outside become possibility.The first communication interface 28 especially is arranged in the outside of Instrument shell 5 and is connected with inner control unit 26 via the electric conductor 32 of inside aptly.Preferably, the first communication interface 28 is dynamo-electric types and especially is designed to plug assembly (Steckanschlusseinrichtung), so that the signal cable 33 of the outside that only schematically shows especially can releasably connect, it makes the possibility that is connected to become to the electric control device 23 of outside.
Alternatively, the interface that the first communication interface 28 also can be designed to wirelessly work is so that can be especially via electric control device 23 communications of wireless signal with the outside.
The first communication interface 28 is EBI preferably, its can be between the control unit 26 of inside and outside electric control device 23 bus signals of transmission consecutive.Outside signal cable 33 can be as the electric conductor 32 of inside be realized with the form of the bus system of connecting.
Preferably, the output device 36 of inner control unit 26 outputs to the first communication interface 28 places with the electric-diagnosis signal, and out it can be delivered to electric control device 23 places of outside for further processing as required therefrom.
The electric-diagnosis signal also can be drawn towards the visual detector spare 37 of pressurized air maintenance tool 2, in order to make it visual in mode arbitrarily.
Possiblely in addition be that pressurized air maintenance tool 2 is equipped with aural alert device 38, for example buzzer that dotted line only represents, so that can send the warning signal of the sense of hearing then and there when receiving corresponding diagnostic signal.
In an advantageous manner, inner control unit 26 is alternative also can be moved in mode of learning (it is also referred to as model of teaching) in monitoring mode.In the scope of this mode of learning, inner control unit 26 can to receive the reference information of having pointed out and in order further processing it to be stored in the memory device 34.
Pressurized air maintenance tool 2 is equipped with entering apparatus 42 aptly, and it is used for activating as required mode of learning.Also can be arranged to, can between mode of learning and monitoring mode, switch as required by this entering apparatus 42.Preferably, inner control unit 26 is equipped with inner control program, and it is responsible for automatically being transformed in the monitoring mode when learning phase finishes.
Mode of learning is aptly not only in connecting the lock position of valve 14 but also can activate in the working position.In the mode of learning that activates during the lock position, the pressure drop about the time of the head pressure that exists in discharge route 22 is received and is stored in the memory device 34 as the first reference information 43.This is the pressing or handle with twice of time lag arbitrarily and occur of the button by entering apparatus 42 or switch 42a for example.Then inner control unit 26 receives head pressure about the pressure drop of time and is formed on and be the reference curve 43a of straight line shown in the embodiment.Yet curve trend is inessential in assessment after a while because last only during the measured time lag (t2-t1) absolute value of pressure drop (p1-p2) important.
By during connecting the working position of valve 14, implementing mode of learning, can determine the discharge flow rate that in discharge route 22, exists with represented being stored in equally in the memory device 34 of inner control unit 26 about the flow curve Q (t) of time and with the form of the second reference information 44 of reference character 44a.This is in the continuous realization in service of the customer device A that connects, wherein, forms the endurance that the flow curve 44a of the second reference information 44 preferably covers the whole cycle for the treatment of (Bearbeitungszyklus) of customer device A.Therefore the second reference information 44 can be envisioned as curve, and it is reflected in during the typical cycle for the treatment of instantaneous discharge flow rate at any time.
After a while normally in service at customer control gear 1, the control unit 26 of the inside of in monitoring mode, working can from measured actual information and associated the first or second reference information 43,44 between relatively generation electric-diagnosis signal, it provides the explanation about the situation of the energy aspect of the customer device A that connects.
Pressurized air maintenance tool 2 especially is provided at the possibility that the connection valve 14 that is arranged in the lock position carries out leak supervision.To this, the control unit 26 by inside during the lock position of connecting valve 14, record the actual information that provided by pressure transducer 24 and with the first reference information 43 that during mode of learning, record and storage relatively.The time measurement interval that is used for the reception actual information is the same large with the time measurement interval when receiving the first reference information 43 at this, and this monitors and control via the control program that is included in the inner control unit 26.If possible, actual pressure is measured also and should be occured with being similar in the same large situation at least in reference pressure is measured in the output value of head pressure, and this monitors by the control unit 26 of inside equally.Guarantee that in this mode information to be compared also can be assigned to identical running state.
If the determined pressure drop in monitoring mode of delivery pressure is lower than the default tolerance value of reference value that receives during mode of learning, so inner control unit 26 for example impels the output of diagnostic signal via output device 36.
The measurement of actual information can be attached to the transfer process place that connects valve 14.Thus, the reception of actual information for example can with the output of switching signal (its control unit 26 by inside send to connect valve 14 places) side by side or at it after, postpone in time predetermined time section realization in time.
When the monitoring output flow, the output for connecting valve 14 determined switching signals of inner control unit 26 also can be used as the starter (Initiator) to the record of flow actual information.
With the same during head pressure in monitoring, when the monitoring output flow, also can occur actual information only single and or record repeatedly, wherein, the repeatedly record of actual information especially can occur in time regularly.
Alternatively or additionally, pressurized air maintenance tool 2 is preferably opened and is made the trigger signal that is provided by the electric control device 23 that connects be based upon possibility to the starter of the recording process of actual information.This Trigger Function of outside electric control device 23 is mainly advantageous particularly in traffic monitoring, because there is thus the possibility of the independent monitoring of the operation circulation of not only totally monitoring customer device A but also one or more subcycles of carrying out the whole service circulation.
Traffic monitoring occurs when connection valve 14 is transformed in the working position.Pressurized air usually flows to customer device A and handles there one or more workpieces that can activate by means of fluid force of customer device A from source of compressed air P in this working position.One or more in these workpieces for example are pneumatic drivers.Comparison by the discharge flow rate actual information that during monitoring mode, detects and associated the second reference information 44, can monitor very simply and whether move cycle period or the air consumption of appearance raising during the in other words subcycle of certain stage of operation circulation, this represents fault or defective workpiece.
Especially also be configured so that if determined actual information and the second reference information 44 associated and that record during mode of learning depart from so its output electric-diagnosis signal of default tolerance value at control unit 26 inner during the traffic monitoring.Tolerance value in the situation of traffic monitoring aptly with tolerance range 45a, 45b (its up and below be arranged in the side of the characteristic curve 44a of the second reference information 44) form be stored in inner control unit 26.
Treat that the tolerance value of considering preferably can input separately in the inner control unit 26 when producing diagnostic signal.The user of pressurized air maintenance tool 2 thus can with tolerance value and therefore diagnostic signal output separately and its demand be complementary.For the input of tolerance value, especially can use the entering apparatus 42 mentioned, the i.e. electric interfaces (operating instrument and/or personal computer (PC) can be connected to its place aptly) that for example formed by the first communication interface 28 of the assembly of button and/or switch 42a and/or (for the electronics input) for example.
The input of tolerance value realizes during mode of learning aptly.Yet pressurized air maintenance tool 2 also can be provided in the monitoring mode that carries out the possibility that changes tolerance value, in order to can consider neatly the running state that changes.
Aptly, mode of learning is by entering apparatus 42 parametrization individually.Parametrization can be directly at pressurized air maintenance tool 2 places by activating button and/or switch 42a carries out or connect in the bus of series connection by outside electric control device 23 under 33 the relaying (Vermittlung).By parametrization for example can be defined in connect valve 14 to being evaluated at every how long the actual information in the inner control unit 26 during this relevant running position.The change of the bandwidth of the change of tolerance value, for example tolerance range 45a, 45b also can be included under the parameterized concept.
In this embodiment, pressurized air maintenance tool 2 is equipped with other, the second communication interface 29, its can be used as diagnose interface and especially the electronic information of customer control gear 1 read instrument 46 and can at least temporarily be connected in its place.Such information read instrument 46 for example allow to read measured actual information, especially in conjunction with the reference information that is associated can be side by side or yet verify at that position of the reference curve that records afterwards irreqularity occurs so that for example combine with traffic monitoring.
In afore-mentioned, can pass through inner control unit 26 for the output of connecting valve 14 determined switching signals and start, and the switching position of connection valve 14 is only ordered by outside electric control device 23 (it is inputted the switching signal of necessity in the inner control unit 26 via the first communication interface 28 this) in addition aptly.The latter is only worked to the transmission mechanism of connecting valve 14 places as switching signal at this, and the switching signal that does not again obtain from the electric control device 23 of outside with formal layout arbitrarily.The processor load that will be included in the microprocessor in the inner control unit 26 in this mode keeps as far as possible littlely.
It should be understood that pressurized air maintenance tool 2 can be equipped with other arbitrarily electric interfaces.Can provide the switching of arbitrary number to export (Schaltausgang) in this mode, the output of the analogue value is possible, perhaps also has the structure by means of attachable personal computer.Such as mentioned, the binding of the electric control device 23 of the outside that preferably exists realizes by suitable bus (it also can link standard corresponding to so-called IO in addition) with the signal transmission technology of serial aptly.
The advantage of pressurized air maintenance tool 2 is its simple debugging (Inbetriebnahme).In principle, pressurized air maintenance tool 2 is installed in the existing compressed air system just enough, and next in other words teaching of study.Then just be ready to operation.
The other special advantage of the assembly of exemplarily describing is, but the customer device A that connects in its intake line 22,13 nonventilated situations aspect pneumatic locking so that energy dissipation in temporary transient stop time, do not occur.Even so, there is when needed the possibility that makes the customer device A ventilation that connects by three position functions of connecting valve 14.The pressure transducer 24 that exists will be locking after the pressure drop in discharge route 22 and the theoretical curve of imparting knowledge to students in other words reference curve compare and provide diagnostic signal too soon the time in pressure drop.In this mode, the leak supervision of customer device A is possible.
At normal operation period, when connection valve 14 occupies the working position, can monitor the variation of flow value measured in discharge route 22, in order to when departing from respect to the theoretical value of imparting knowledge to students, export again diagnostic signal.In this mode, the consumption of customer device A monitoring is possible.
If pressurized air maintenance tool 2 is embodied as element of construction, its have compact size and on less space in conjunction with a plurality of functions.
Should further be mentioned that at last by only make head pressure or only discharge flow rate can monitor, pressurized air maintenance tool 2 also can be equipped with the monitoring function of minimizing.In these situations, usually can abandon flow transducer 25 or pressure transducer 24.Yet the dual execution of two surveillance and control measures is advantageous particularly in same pressurized air maintenance tool 2, because it guarantees the especially effectively monitoring of the parameter of energy correlation.
Claims (18)
1. pressurized air maintenance tool, it has following constituent element:
-can electrically operated connection valve (14), it has the supply entrance (16) that can be connected with source of compressed air, the vent outlet (18) that is connected with atmosphere and exit from do (17) and its and can switch in described exit from do (17) and the working position that described supply entrance (16) is connected and to in described exit from do (17) and the vent position that described vent outlet (18) is connected
-instrument the exhaust port (7) that can be connected with the customer device (A) of outside, it is connected with the exit from do (17) of described connection valve (14) via discharge route (22),
-be suitable for measuring the pressure transducer (24) of the head pressure that in described discharge route (22), exists and/or be suitable for measuring the flow transducer (25) of the discharge flow rate of appearance in described discharge route (22),
-and inner electronic control unit (26), it is connected and it can move in monitoring mode at signalling technique with described connection valve (14) and with described pressure transducer (24) and/or described flow transducer (25),
It is characterized in that,
It is functional and additionally can switch in the lock position that-described connection valve (14) has 3/3 valve, its exit from do (17) that is connected with described instrument exhaust port (7) not only separates with described supply entrance (16) but also with described vent outlet (18) in described lock position
-inner described electronic control unit, (26) during the described lock position and/or alternatively during described working position can in mode of learning, move in described monitoring mode, in described mode of learning can determine during the described lock position described head pressure about the pressure drop of time and/or during described working position, can determine described discharge flow rate about the flow curve of time and can be with reference information, (43,44) form is stored in inner described electronic control unit, (26) memory device, (34) in
-inner described electronic control unit (26) has comparator device (35), can be with the actual information that during described monitoring mode, provided by described pressure transducer (24) and/or described flow transducer (25) and affiliated described reference information (43 by it, 44) relatively
-and inner described electronic control unit (26) have output device (36), its comparative result according to described comparator device (35) can be exported the electric-diagnosis signal.
2. pressurized air maintenance tool according to claim 1 is characterized in that, its form with element of construction is constructed.
3. pressurized air maintenance tool according to claim 1 and 2 is characterized in that, it is equipped with the indicating device (34) of the vision that can activate based on described electric-diagnosis signal and/or the warning device (38) of the sense of hearing.
4. each described pressurized air maintenance tool in 3 according to claim 1, it is characterized in that, it has at least one communication interface (28 that is connected with the described electronic control unit (26) of inside, 29), for the electronic equipment with described electronic control unit (26) the communication outside of inside can be connected to described communication interface (28,29) locate, especially outside electric control device (23) and/or electronic information reads instrument (46) and/or other at least one electronic equipment, wherein, at least one communication interface (28,29) is designed to EBI aptly.
5. pressurized air maintenance tool according to claim 4 is characterized in that, at least one communication interface (28,29) is that dynamo-electric type and/or at least one communication interface (28,29) is configured to wireless signal transmission.
6. according to claim 4 or 5 described pressurized air maintenance tools, it is characterized in that inner described electronic control unit (26) is configured to described electric-diagnosis signal is transferred at least one communication interface (28) of described pressurized air maintenance tool (2) and locates.
7. each described pressurized air maintenance tool in 6 according to claim 4, it is characterized in that, the transmission mechanism that inner described electronic control unit (26) is configured to make switching signal to locate to described connection valve (14) from the electric control device (23) of the outside that is connected to communication interface (28), especially like this so that via the switching signal of described communication interface (28) input can be not with processing the described electronic control unit (26) by inside directly be sent to described connection valve (14) and locate.
8. each described pressurized air maintenance tool in 7 according to claim 1 is characterized in that it is equipped with for the activation of described mode of learning and/or parameterized entering apparatus (42).
9. pressurized air maintenance tool according to claim 8 is characterized in that, described entering apparatus (42) comprises at least one button (42a) and/or at least one switch (42a) and/or at least one electric interfaces (28).
10. each described pressurized air maintenance tool in 9 according to claim 1 is characterized in that the record of described actual information occurred in the time lag identical with the record of associated described reference information.
11. each described pressurized air maintenance tool in 10 according to claim 1, it is characterized in that the trigger signal of determining for described connection valve (14), provide by the described electronic control unit (26) of inside switching signal that produce and output or by the electric control device (23) of outside works as the starter to the record of actual information during described monitoring mode.
12. pressurized air maintenance tool according to claim 11, it is characterized in that, along with the output of the switching signal of determining for described connection valve (14) begins or postpones in time the time period of defined about this, described actual information can be by inner described electronic control unit (26) record.
13. according to claim 11 or 12 described pressurized air maintenance tools, it is characterized in that, along with the output that described connection valve (14) is switched to the switching signal in the described lock position begins or in time lingeringly after this, record the actual information of described pressure transducer (24), so that by next becoming possibility with the leak supervision that more especially makes of affiliated described reference information (43).
14. each described pressurized air maintenance tool in 13 according to claim 11, it is characterized in that, begin or in time lingeringly after this with the output that described connection valve (14) is switched to the switching signal in the described working position, single or multiple ground records the actual information of described flow transducer (25), so that by next becoming possibility with the air consumption monitoring that more especially makes of affiliated described reference information (44).
15. each described pressurized air maintenance tool in 14 according to claim 1, it is characterized in that, in the described electronic control unit (26) of inside, store maybe and can store tolerance value, it is considered when producing described electric-diagnosis signal to be exported, wherein, described tolerance value can exist with the form of at least one tolerance range.
16. pressurized air maintenance tool according to claim 15, it is characterized in that, described tolerance value especially can individually and can freely selectively be inputted by means of the entering apparatus (42) of the existence of described pressurized air maintenance tool (2) and/or via at least one electric interfaces (28,29) of described pressurized air maintenance tool (2).
17. each described pressurized air maintenance tool in 16 according to claim 1, it is characterized in that inner described electronic control unit (26) is configured to cause according to the comparative result of described comparator device (35) transfer process of described connection valve (14).
18. one kind with the customer control gear of the electric control device (23) of each described at least one pressurized air maintenance tool (2) and the outside that maybe can connect that connects in its place in 17 according to claim 1.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011012558A DE102011012558B3 (en) | 2011-02-26 | 2011-02-26 | Compressed air maintenance device and thus equipped consumer control device |
| DE102011012558.2 | 2011-02-26 | ||
| DE1020110125582 | 2011-02-26 | ||
| PCT/EP2012/000503 WO2012113504A1 (en) | 2011-02-26 | 2012-02-04 | Compressed air maintenance unit, and consumer control device equipped with the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103380304A true CN103380304A (en) | 2013-10-30 |
| CN103380304B CN103380304B (en) | 2016-05-11 |
Family
ID=45571495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280010458.4A Active CN103380304B (en) | 2011-02-26 | 2012-02-04 | Compressed air maintenance tool and the customer control device that is equipped with it |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20130323088A1 (en) |
| EP (1) | EP2622229B1 (en) |
| CN (1) | CN103380304B (en) |
| DE (1) | DE102011012558B3 (en) |
| WO (1) | WO2012113504A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108803692A (en) * | 2017-05-03 | 2018-11-13 | 费斯托股份有限两合公司 | Air control unit and process control equipment equipped with the air control unit |
| CN110546390A (en) * | 2017-05-03 | 2019-12-06 | 费斯托股份有限两合公司 | Electropneumatic control device and process control device equipped therewith |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012021533A1 (en) | 2012-10-31 | 2014-04-30 | Festo Ag & Co. Kg | Compressed air maintenance device and thus equipped consumer control device |
| DE102013015105A1 (en) | 2013-09-12 | 2015-03-12 | Festo Ag & Co. Kg | Compressed air service device, consumer control device equipped therewith and associated operating method |
| JP2018513380A (en) * | 2015-04-20 | 2018-05-24 | ネクスマティクス・エル・エル・シー | System and method for leak detection using directional control valves |
| DE102015007147A1 (en) * | 2015-06-03 | 2016-12-08 | Samson Aktiengesellschaft | Electro-pneumatic actuator |
| AT517432B1 (en) * | 2015-06-24 | 2017-09-15 | Engel Austria Gmbh | Pneumatic system and method of operation or commissioning thereof |
| JP6704247B2 (en) * | 2015-12-25 | 2020-06-03 | 株式会社日立産機システム | Pneumatic system operation control device and control method |
| EP3236328B8 (en) * | 2016-04-21 | 2019-03-06 | Kaeser Kompressoren SE | Method for analysing the compressed air supply security of a compressed air installation |
| AT520061B1 (en) * | 2017-06-08 | 2019-05-15 | Sackl Rudolf | Device for monitoring compressed air |
| WO2019060514A1 (en) * | 2017-09-22 | 2019-03-28 | Engineered Corrosion Solutions, Llc | Controllable air maintenance devices for fire protection systems |
| DE102018202416A1 (en) * | 2018-02-16 | 2019-08-22 | Festo Ag & Co. Kg | Consumer control device and control method |
| WO2020138393A1 (en) * | 2018-12-28 | 2020-07-02 | ナブテスコオートモーティブ株式会社 | Air supply system |
| IT202000012010A1 (en) * | 2020-05-22 | 2021-11-22 | Safen Fluid & Mech Engineering S R L | DEVICE FOR THE DIAGNOSTICS OF PNEUMATIC SYSTEMS |
| WO2024004092A1 (en) * | 2022-06-29 | 2024-01-04 | Smc株式会社 | Fluid control device, fluid pressure supply apparatus, and fluid control method |
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- 2012-02-04 CN CN201280010458.4A patent/CN103380304B/en active Active
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| CN110546390A (en) * | 2017-05-03 | 2019-12-06 | 费斯托股份有限两合公司 | Electropneumatic control device and process control device equipped therewith |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2012113504A1 (en) | 2012-08-30 |
| EP2622229B1 (en) | 2015-08-19 |
| US20130323088A1 (en) | 2013-12-05 |
| CN103380304B (en) | 2016-05-11 |
| EP2622229A1 (en) | 2013-08-07 |
| DE102011012558B3 (en) | 2012-07-12 |
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Address after: Germany Esslingen Patentee after: FESTO Co., Ltd Address before: Germany Esslingen Patentee before: FESTO AG & CO. KG |