EP2756219A2 - Purgeur de condensat équipé d'un contrôle de défauts - Google Patents

Purgeur de condensat équipé d'un contrôle de défauts

Info

Publication number
EP2756219A2
EP2756219A2 EP12772243.7A EP12772243A EP2756219A2 EP 2756219 A2 EP2756219 A2 EP 2756219A2 EP 12772243 A EP12772243 A EP 12772243A EP 2756219 A2 EP2756219 A2 EP 2756219A2
Authority
EP
European Patent Office
Prior art keywords
valve element
condensate
monitoring
valve
discharge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12772243.7A
Other languages
German (de)
English (en)
Inventor
Johannes Sinstedten
Herbert Schlensker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beko Technologies GmbH
Original Assignee
Beko Technologies GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47018139&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2756219(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Beko Technologies GmbH filed Critical Beko Technologies GmbH
Publication of EP2756219A2 publication Critical patent/EP2756219A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
    • F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
    • F16T1/38—Component parts; Accessories
    • F16T1/48—Monitoring arrangements for inspecting, e.g. flow of steam and steam condensate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means

Definitions

  • the present invention is a method for disturbance monitoring a shut-off valve of a Kondensatabieiters and a suitably equipped Kondensatabieiter.
  • condensate consisting essentially of water and oil arises, for example, from the lubricant of the compressors and the moisture content of the gas.
  • This condensate usually adversely affects the intended use of the compressed gas system due to soiling, clogging and corrosion. Therefore, it must be collected and drained from time to time from the self-contained pressurized gas system, preferably without gas or compressed air being lost in large quantities and the pressure in the system significantly decreasing. It is known to perform such bleeding operations at predetermined time intervals. Ideally, however, such draining operations are caused depending on the level of a collection area provided for the condensate. For level measurement a variety of methods and procedures are known.
  • the inventive method is provided for monitoring the failure of a drain valve of a Kondensatabieiters.
  • the Kondensatabieiter invention serves to drain condensate from a compressed gas system, in particular compressed air system.
  • Condensate in the context of the invention means essentially consisting of liquid constituents accumulations in the compressed gas system.
  • Condensate essentially comprises water resulting from the moisture content of the gas and oil due, for example, to the lubricant of the compressors.
  • the inventive Kondensatabieiter has a drain valve, the egg n a controllable by a control circuit, between a closed position and an open position movable valve element has in its open position pressurized condensate from the pressurized gas system ü be reinendem Ve n ti lelementna ch g esc hal tete From this point on, it is necessary to drain the condensate drain and to keep the pressure in the compressed gas system in its closed position. For example, in the closed position, the valve member sealingly abuts an associated valve seat so as to maintain the pressure in the compressed gas system.
  • the method according to the invention comprises a closing step, in which the control circuit at least triggers a closing movement of the valve element in the direction of the closed position.
  • a subsequent step for monitoring the closed position of the valve element is also provided.
  • This monitoring step becomes, for example, once, in several times Sequence or at least sections continuously, for example, until an opening step in which the control circuit triggers an opening movement of the valve element in the direction of the open position performed.
  • the monitoring step is performed continuously for the duration while the control circuit is intended to initiate and maintain a closed position of the valve element.
  • a non-closed position is determined by a bleed flow, which can thus be referred to as leakage flow, of the compressed gas, condensate or mixtures thereof in the downstream of the valve element drain region or if possible directly at the valve element d identifies wi rd.
  • a bleed flow which can thus be referred to as leakage flow, of the compressed gas, condensate or mixtures thereof in the downstream of the valve element drain region or if possible directly at the valve element d identifies wi rd.
  • Le cka g est rö mungmei nt e in a compressed gas and / or condensate-containing flow which occurs due to the malfunction of the shut-off valve in its closed position, for example because the closed position of the valve element is not achieved or insufficiently seals the valve element.
  • the detection of the malfunction has the advantage that an improper functioning of the condensate drain can be detected at an early stage, and thus the precautionary replacement of parts of the condensate drain can be omitted in a predefined set of parameters.
  • the detection of the leakage flow in the discharge area of the condensate drain for example almost directly on the valve element, achieves a very reliable malfunction detection.
  • the fault monitoring according to the invention has the advantage that now only in case of failure maintenance or replacement of components of Kondensatabieiters can be made. A performed from the actual wear and disturbance behavior performed at predetermined time intervals maintenance can be advantageously eliminated. The latter has the disadvantage that a maintenance only by time, d. H.
  • the known procedure namely to carry out the maintenance at predetermined service intervals, is also not oriented to the actual load. For example, it is quite possible that by more than expected opening and closing movements of the valve, a failure before time the regular maintenance exchange falls and is not noticed.
  • the fault monitoring according to the invention thus has the advantage that faults are detected early and unnecessary pressure losses are avoided.
  • the invention also relates to a method in which a monitoring after an opening step, in which the control circuit triggers an opening movement of the valve element in the direction of opening position, takes place whether a bleed flow is to be detected in the bleed area or, if possible, on the valve element. It can thus be checked whether the discharge operation is or has been carried out successfully.
  • the invention relates to a combination of both methods, namely the closed position monitoring and the opening position monitoring.
  • the opening position monitoring has the advantage that, after a malfunction in which no discharge takes place after detection of a condensate level to be discharged, if necessary after repeated discharge attempts, without visual or. Functional control can be "designed", as far as a successful discharge process is finally detected.
  • the inventive method has next to the possibility of membrane failure monitoring in conjunction with another sensor, for example, for the level monitoring of the condensate collection area and / or monitoring the valve control also has the advantage that in conjunction with this further sensor further monitoring the function of the entire Kondensatabieiters and / or the upstream and downstream components of the printing system is made possible by plausibility check.
  • the detection or non-detection of the aforementioned outlet flow after performing the opening step, in which the valve element is moved into the open position can be used to perform a function check of the filling level monitoring or vice versa. If, for example, fill level monitoring detects a condensate level to be drained off and no discharge flow is detected after the opening step has been initiated, this indicates an optionally mechanical one Fault or contamination in the control of the valve or for a total pressure drop in the compressed gas system.
  • the discharge flow is detected due to the flow pressure caused thereby.
  • a switch is provided, the movable actuating member changes its position by the action of the Ablassströmung and wherein this position change causes a change in the switching state of the switch.
  • a cost-effective detection sensor can be realized.
  • the Ablassströmung is detected due to the temperature drop caused thereby, whereby a very reliable and correspondingsunan devise detection of the accident is achieved.
  • at least one temperature sensor is provided which detects the cooling caused during the expansion of the compressed gas.
  • a further or a plurality of further temperature sensors is provided which determine the ambient temperature and / or the compressed gas or condensate temperature.
  • a calorimetric determination of the change in heat quantity of the discharge flow during unintentional discharge is provided.
  • the discharge region is preferably heated with a predetermined amount of heat, for example electrically heated, and the discharge flow is detected on the basis of the resulting temperature increase in the discharge region.
  • the composition of the discharge or leakage flow can be determined on the basis of the value of the temperature drop or the temperature increase. For example, in the case of a predominantly liquid-containing bleed flow, a greater temperature increase or a lower temperature drop is to be expected, and with a predominantly gas-containing bleed flow a lower temperature increase or a greater temperature drop is to be expected, so that conclusions can be drawn about the composition and a more accurate fault identification. possible.
  • the quantitative measurement thus has the advantage that, furthermore, any desired discharge process can be monitored. Based on the expansi- Ons dormitoren temperature changes are conclusions on the pressure of the compressed gas system and its composition possible.
  • a movement of a detection sensor whose movement and / or position is detected magnetically or inductively.
  • a permanent magnetic detection transmitter is provided, the movement of which is detected by means of an induction coil.
  • an optical and / or acoustic disturbance signal is initiated so as to cause maintenance of the condensate drain, for example.
  • the invention further relates to a Kondensatabieiter for a compressed gas system.
  • the latter has the following: a control circuit, a discharge valve which has a valve element which is actuated by the control circuit and which is movable between a closed position and an open position.
  • the valve element is provided to discharge in its opening position pressurized condensate from the pressurized gas system via the discharge region of the condensate drain and to keep the pressure in the compressed gas system in its closed position.
  • the inventive Kondensatabieiter further comprises a detection device for detecting a Ablassströmung in the discharge area.
  • the control circuit of the Kondensatabieiters is designed to carry out the method described above.
  • the detection of the malfunction has the advantage that an improper functioning of the condensate drain can be detected at an early stage and thus the precautionary replacement of parts of the condensate drain in fixed, predetermined heat exchanges can be omitted.
  • the detection of the leakage flow or discharge flow almost directly on the valve element achieves a very reliable malfunction detection.
  • the discharge or leakage flow is detected by a sensor comprising at least one temperature sensor and / or a flow pressure sensor.
  • the flow pressure sensor comprises a biased against the direction of Ablassströmung or leakage flow, in the direction of Ablass. Leakage flow movable magnetic or magnetizable detection transmitter whose movement and / or position is detected inductively or magnetically.
  • the drain valve is a diaphragm valve.
  • the valve element is thus a membrane, for example made of an elastic plastic. Diaphragm valves are ideal for regulating and shutting off volume flows. Since only the valve body and the membrane are in contact with the compressed gas or the condensate, there are only slight wear problems.
  • compressed gas is applied to the drain valve by means of a control valve in order to move the drain valve at least into the open position.
  • FIGS. show a particularly preferred embodiment of the invention, but this is not limited thereto. They show schematically:
  • Fig. 1 is a sectional view of a generic Kondensatabieiters, in which the inventive method is used;
  • Fig. 1 shows a condensate drain 1 according to the invention for a compressed air system in a sectional view.
  • Condensate 2 which is obtained during the compression of the compressed air, is fed via a feed line 3 to the Kondensatabieiter 1.
  • the condensate 2 is substantially condensed moisture of the ambient air, which sucks a compressed air compressor, not shown here. It also has regularly oily and particulate metallic components.
  • the condensate 2 collects in a condensate collecting region 4 and, after reaching a defined fill level 5, is drained via a drain valve 16 provided in the drain line 6 and the drain region 18.
  • the drain valve 16 is designed as a diaphragm valve, i. H .
  • the drain valve 16 has a membrane as a valve element 19, which in its in Fig. In FIG. 1 closed sealingly with a valve seat, so as to close the drain line 6.
  • the sensor system 7 comprises at least one measuring capacitor 8, which has a continuously variable capacitance as a function of the level of the condensate 2 in the condensate collecting region 4.
  • the capacitive measurement thus detects the filling state of the condensate collector 4 by the change in the electrical capacitance when condensate 2 flows as a dielectric kum.
  • the measuring capacitor 8 forms an electromagnetic measuring field between a first dedicated capacitor electrode and a second counter electrode provided by the wall of the condensate collecting region 4. Even with heavy contamination, for example due to rust from the compressed air lines or oil from the air compressors, the device shown is very reliable.
  • the sensor 7 is arranged so that even with flooded condensate collection area 4 a non-wetted by the condensate and thus clean zone 9 remains to avoid erroneous measurements caused, for example, by coatings that can lead to a metrological short circuit.
  • the clean zone 9 is defined by a dive-bell-like recess 11.
  • the clean zone 9 above the maximum intended level 5 and the inlet of the compressed air line 13 is provided.
  • the branched off compressed air is used to actuate the drain valve 16 and the holding of the drain valve in its closed position.
  • the electromagnetic control valve 17 is provided, which ensures in the position shown that compressed air is applied to the membrane 19 of the drain valve 16, that the drain line 6 is closed and no condensate 2 can be drained.
  • the electric Magnetic control valve 17 comprises a coil 12 and a permanent magnetic armature 10, which by the flow of a current flowing through the coil actuating current from a rest position, for example, in FIG. 1 shown in the closed position of the drain valve 16 corresponding position, is moved to a desired position.
  • the rest position results from the fact that the armature 10 has at one of its end faces an elastic sealing material and whose gravity and compressed air supported concern the end face to a valve seat 11, a closure of the compressed air discharge line 14 is effected so that the pressurization of the drain valve 16 is maintained ,
  • an electronic control circuit 15 is provided for controlling the electromagnetic control valve 17 and thus of the shut-off valve 16.
  • a sufficient drop in a holding current ensures that the armature 10 with gravity and with the compressed air of the line 13 against a lower stop in a Schl intestel lungs laps in which he closes the compressed air discharge line 14, but at the same time compressed air above the diaphragm 19 abuts, and urges them into the closed position.
  • a temperature sensor 20 is provided to check whether a leakage flow occurs on the valve element 19, because this has not reached its closed position, for example, no longer maintains it, for example because of wear-related damage.
  • the control circuit 15 is able to detect a temperature drop, which is due to the expansion of the unwanted compressed gas outlet (leakage flow). This monitoring is carried out by the control circuit 15 and in the case of the detection of a leakage flow, a fault signal is generated, which is displayed optically or acoustically.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Drying Of Gases (AREA)
  • Pipeline Systems (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un procédé de contrôle de défauts d'une soupape de décharge (16) d'un purgeur de condensat (1) dans un système de gaz sous pression, le purgeur de condensat (1) présentant une soupape de décharge (16) qui comporte un élément de soupape (19) mobile pouvant être commandé par l'intermédiaire d'un circuit de commande (15) pour être mis en position de fermeture ou en position d'ouverture, afin de pouvoir, en position d'ouverture, évacuer le condensat sous pression du système de gaz sous pression, par une zone d'évacuation (18) du purgeur de condensat disposée derrière l'élément de soupape (19) et, en position de fermeture, maintenir la pression dans le système de gaz sous pression. Le procédé comprend une opération de fermeture, dans laquelle le circuit de commande (15) déclenche un mouvement de fermeture de l'élément de soupe (19) en direction de la position de fermeture et/ou une opération d'ouverture, dans laquelle le circuit de commande (15) déclenche un mouvement d'ouverture de l'élément de soupape (19) en direction de la position d'ouverture ; une opération subséquente pour contrôler la position de fermeture ou la position d'ouverture de l'élément de soupape (19). L'invention est caractérisée en ce que, à l'étape de contrôle de la position de fermeture, une position de non-fermeture est détectée sur la base d'un flux d'évacuation du gaz sous pression, du condensat ou de mélanges de ces substances dans la zone d'évacuation (18) ou au niveau de l'élément de soupape (19), ou bien, à l'étape de contrôle de la position d'ouverture, un flux d'évacuation du gaz sous pression, du condensat ou de mélanges de ces substances est détecté dans la zone d'évacuation (18) ou au niveau de l'élément de soupape (19).
EP12772243.7A 2011-09-08 2012-09-07 Purgeur de condensat équipé d'un contrôle de défauts Withdrawn EP2756219A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011053411.3A DE102011053411B4 (de) 2011-09-08 2011-09-08 Kondensatableiter mit Störungsüberwachung
PCT/EP2012/067488 WO2013034674A2 (fr) 2011-09-08 2012-09-07 Purgeur de condensat équipé d'un contrôle de défauts

Publications (1)

Publication Number Publication Date
EP2756219A2 true EP2756219A2 (fr) 2014-07-23

Family

ID=47018139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12772243.7A Withdrawn EP2756219A2 (fr) 2011-09-08 2012-09-07 Purgeur de condensat équipé d'un contrôle de défauts

Country Status (8)

Country Link
US (1) US20140230905A1 (fr)
EP (1) EP2756219A2 (fr)
JP (1) JP6019122B2 (fr)
KR (1) KR20140058681A (fr)
CN (1) CN103827569A (fr)
BR (1) BR112014004793A2 (fr)
DE (1) DE102011053411B4 (fr)
WO (1) WO2013034674A2 (fr)

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DE102011053410A1 (de) * 2011-09-08 2013-03-14 Beko Technologies Gmbh Verbessertes Verfahren zum automatisierten Ablassen von Kondensat aus einem Druckgassystem
GB2546784A (en) * 2016-01-28 2017-08-02 Spirax-Sarco Ltd A steam trap
CN113090803B (zh) * 2021-04-12 2022-05-03 河北白沙烟草有限责任公司保定卷烟厂 一种冷凝水自动强制排放装置及方法
DE102022101585A1 (de) * 2022-01-24 2023-07-27 Gestra Ag Regelarmatur mit einer Sensorvorrichtung

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Also Published As

Publication number Publication date
WO2013034674A2 (fr) 2013-03-14
KR20140058681A (ko) 2014-05-14
DE102011053411B4 (de) 2016-04-21
JP6019122B2 (ja) 2016-11-02
CN103827569A (zh) 2014-05-28
DE102011053411A1 (de) 2013-03-14
WO2013034674A3 (fr) 2014-04-10
US20140230905A1 (en) 2014-08-21
JP2014529045A (ja) 2014-10-30
BR112014004793A2 (pt) 2017-03-28

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