EP3492846A1 - Récipient de sécurité pour fluide de travail - Google Patents

Récipient de sécurité pour fluide de travail Download PDF

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Publication number
EP3492846A1
EP3492846A1 EP18203625.1A EP18203625A EP3492846A1 EP 3492846 A1 EP3492846 A1 EP 3492846A1 EP 18203625 A EP18203625 A EP 18203625A EP 3492846 A1 EP3492846 A1 EP 3492846A1
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EP
European Patent Office
Prior art keywords
working fluid
gas
pressure
safety container
inert gas
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.)
Granted
Application number
EP18203625.1A
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German (de)
English (en)
Other versions
EP3492846B1 (fr
Inventor
Tobias Lingk
Hans-Josef Spahn
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Vaillant GmbH
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Vaillant GmbH
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Filing date
Publication date
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Priority to PL18203625T priority Critical patent/PL3492846T3/pl
Publication of EP3492846A1 publication Critical patent/EP3492846A1/fr
Application granted granted Critical
Publication of EP3492846B1 publication Critical patent/EP3492846B1/fr
Priority to HRP20201410TT priority patent/HRP20201410T1/hr
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Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/005—Arrangement or mounting of control or safety devices of safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/001—Charging refrigerant to a cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/002—Collecting refrigerant from a cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/003—Control issues for charging or collecting refrigerant to or from a cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/004—Details for charging or discharging refrigerants; Service stations therefor with several tanks to collect or charge a cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/12—Inflammable refrigerants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/23—Separators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids

Definitions

  • the invention relates to irregular states in working fluid circuits, in which a working fluid acting as a refrigerant is conducted in a thermodynamic cycle, such as the Rankine cycle.
  • thermodynamic cycle such as the Rankine cycle.
  • These are mainly heat pumps, air conditioners and refrigerators, as they are used in residential buildings.
  • Residential buildings are private homes, rental housing complexes, hospitals, hotel complexes, restaurants, combined residential and commercial buildings and businesses in which people permanently live or work, in contrast to mobile devices such as air conditioning systems or transport boxes, or industrial equipment or medical devices. What they all have in common is that they use energy to generate useful heat or useful cooling and form heat-transfer systems.
  • thermodynamic cycles have long been known, as well as the safety problems that can arise when using suitable working fluids.
  • the best known working fluids at the time are combustible and poisonous.
  • safety refrigerants consisting of fluorinated hydrocarbons.
  • these safety refrigerants damage the ozone layer, lead to global warming, and that their safety-related harmlessness led to constructive inattentiveness.
  • Up to 70% of the turnover was accounted for by the refill demand of leaking equipment and its leakage losses, which was accepted as long as this was considered economically justifiable in individual cases and promoted the need for replacement procurement.
  • the lower ignition limit of propane as working fluid is about 1.7% by volume in air, which corresponds to 38 g / m 3 in air.
  • Propane is also heavier than air, so sinks in still air on the ground and accumulates there. So if a part of the propane in a flow-poor zone of the closed space in which the disturbed unit is collect, the local explosion limits can be achieved much faster than can be expected from the quotient of total volume of volume to leaked amount of propane.
  • the WO 2015/032905 A1 seeks to solve this problem by an electric current generator in the opening or its interlocking this space is integrated and when actuated in a first step generates and provides the electrical energy with which the sensor is activated, and in the event of an alarm Lock then does not release, but causes a ventilation of the enclosed space, and only in a second step, an unlocking and opening allows.
  • the DE-PS 553 295 describes an encapsulated compression refrigeration machine in which the refrigerant compressor 1, its drive motor 2, evaporator 3, condenser 4 and control valve 5 are enclosed in a double-walled capsule 6 and 7, respectively. In the space between the double-walled capsule, a negative pressure is created and leaks, which could occur at the openings for cooling water and brine, sucked. The aspirated working fluid can subsequently be recovered if necessary. It should be noted that there is no ambient air within the encapsulated space and due to the negative pressure in the double jacket also can not penetrate into the encapsulated interior.
  • the DE 41 14 529 A1 describes a safety device for a filled with a dangerous medium refrigeration system, which consists of at least one complete refrigeration unit comprising a refrigerant circuit with evaporator, compressor and condenser, and a drive motor.
  • the system is enclosed gas-tight, the enclosure is designed after the technically possible maximum pressure in the event of failure, and from the enclosure, the connections for the refrigerant, a coolant and electrical supply, monitoring and control lines are pressure-tight to the outside. It can be connected to a surge tank.
  • the DE 195 25 064 C1 describes a refrigerator with a gas-tight housing, which accommodates all refrigerant-carrying components of the machine, a space connecting the interior of the gas-tight housing with an outlet space is provided, and the space is filled with a refrigerant sorbing substance.
  • the amount of sorbent material is dimensioned so that the entire amount of any escaping refrigerant can be absorbed and kept away from the environment.
  • the space filled with the sorbent material is open to the environment. For refrigerants that are heavier than air, the space is open at the bottom, for those that are lighter, it is open at the top, so that a delivery fan is not required.
  • the sorbent is introduced into the housing and encloses the chiller and the refrigerant-carrying facilities completely. On its way out, baffles are provided to prevent short circuit currents and force escaping gas through the sorbent.
  • a double-walled embodiment in which the sorbent is arranged in the double jacket is also possible.
  • a measuring device for refrigerant can be provided.
  • the DE 10 2011 116 863 A1 describes a method for securing a device for a thermodynamic cycle, which is operated with a process fluid containing or consisting of at least one environmentally hazardous, toxic and / or inflammatory substance.
  • a process fluid particularly ammonia, propane or propene
  • the substance is selectively bound by the adsorbent.
  • the adsorbent is regenerated after use.
  • the adsorbent may be provided in the form of a bed, a shaped body, a paint, a spray film or a coating.
  • the support structure of the molding may consist of microstructure, lamellar structure, tube bundle, pipe register and sheet metal and must be mechanically stable and strong surface enlarging.
  • a circulation of the potentially contaminated air is usually continuous, but can also be initiated by a sensor that turns on the ventilation after reaching a threshold value or in the event of a detected accident.
  • the adsorption can be carried out inside or outside a closed space.
  • the DE 195 26 980 A1 describes an apparatus and method for cleaning closed space air having gaseous contamination. Once the contaminant is detected by a gas sensor, it controls a compressor which directs the air through an absorber in that space, thereby absorbing the contaminant. The cleaned air leaves the absorber in the closed room.
  • the DE 195 25 064 C1 describes a refrigerator with a gas-tight housing, which accommodates all refrigerant-carrying components of the machine, a space connecting the interior of the gas-tight housing with an outlet space is provided, and the space is filled with a refrigerant sorbing substance.
  • the amount of sorbent material is dimensioned so that the entire amount of any escaping refrigerant can be absorbed and kept away from the environment.
  • the space filled with the sorbent material is open to the environment. For refrigerants that are heavier than air, the space is open at the bottom, for those that are lighter, it is open at the top, so that a delivery fan is not required.
  • the sorbent is introduced into the housing and encloses the chiller and the refrigerant-carrying facilities completely. On its way out, baffles are provided to prevent short circuit currents and force escaping gas through the sorbent.
  • a double-walled embodiment in which the sorbent is arranged in the double jacket is also possible.
  • a measuring device for refrigerant can be provided.
  • the EP 1 666 287 describes a vehicle air conditioning system with a collecting container for the refrigerant, which communicates via an externally controllable valve with a gas-liquid separator.
  • a pressure sensing device By means of a pressure sensing device, the valve can be closed when the detected pressure becomes equal to a predetermined pressure.
  • the signal for opening the valve can be made by leakage detection.
  • the EP 2 921 801 A1 describes a method for the replacement of fluid-flow parts of an air conditioning refrigeration system.
  • a container is connected, in which the working fluid can flow from the refrigeration cycle, wherein a connecting part and a pressure reduction are provided.
  • the EP 3 115 714 A1 describes the problem of a discharge of the working fluid through a large-lumen pipeline which is connected to the outlet of the heat source side of the condenser.
  • working fluid collects not only during the discharge, but also during the normal cooling operation, and thereby also decreases the cooling capacity. If one counteracted the effect by a larger amount of working fluid, the production costs and also the risks for leaks increased.
  • the problem is solved by a storage container, a first on / off valve in a line between the expansion valve and the Nutzseite the heat exchanger and a bypass, which branches off between the open / close valve and the expansion valve and is connected to the suction side of the compressor , When discharging working fluid into the container, the first open / close valve is closed and the working fluid flows from the heat source side through the bypass into the storage container.
  • the working fluid circulation In the case of leakage or maintenance, in which the working fluid circulation has to be opened or heated, the working fluid circulation should be emptied as completely as possible or at least so far from the flammable working fluid that never the risk of ignition can arise. Other measures, such as Routine checks may require draining. Such evacuations are currently performed manually and it would be desirable to be able to perform them by remote maintenance. It would also be desirable in the face of externally induced disturbances such as earthquakes, fires or floods if the flammable working fluid could be quickly cleared without manual intervention on site.
  • the object of the invention is therefore to provide an improved safety container, which can remove the working fluid from the cycle, allows a return to the cycle, solves the problems better and no longer has the disadvantages.
  • heat transfer fluids are here all gaseous or liquid media to understand, with which heat is transferred, such as air, water, brine, heat transfer oils or the like.
  • propane is used as the working fluid and nitrogen as the inert gas.
  • inert gas may also be used elsewhere in such equipment, for example, to inertise the housing or the cycle if it has been previously emptied and work is to take place thereon. For such purposes, further inerting measures may be envisaged.
  • the inert gas container provided here is intended only for such inert gas, which serves for emptying the containment, the return to the cycle or for the discharge and storage of inert gas from the cycle.
  • the pressure is initially increased by pressing inert gas under high pressure into the containment vessel filled with working fluid.
  • a part of the vaporous working fluid is liquefied, whereby the aim is that this proportion is as large as possible.
  • the drain located at the bottom of the containment vessel initially discharges liquid working fluid when it is opened. Thereafter, towards the end of the emptying process, a gas-liquid mixture in the fume hood, before only inert gas is withdrawn.
  • a device for increasing the pressure is provided with the propane gas outlet of the containment.
  • this is a pump, as otherwise used in a car as a fuel pump or as an injection pump.
  • the pump should also be protected against dry running, promote a gas-liquid mixture and best as a compressor alone gaseous fluid can promote.
  • the pressure increase does not have to be high. It is advantageous if the pump performs a forced delivery, as do piston pumps, gear pumps, Roots pumps, peristaltic pumps or diaphragm pumps.
  • the pump can also be arranged inside the containment.
  • the withdrawn from the containment gas-liquid mixture which is typically a mixture of liquid propane, gaseous propane and nitrogen, cooled.
  • the vapor pressure of the propane decreases and, depending on the pressure of the inert gas, only a liquid working fluid phase and a gaseous inert gas phase are present at the downstream gas-liquid separator, which must be separated from one another.
  • the separation takes place with a gas-liquid separator, which is preferably designed as a cyclone separator.
  • the liquid phase is withdrawn below and liquid and returned under pressure to the circulation of the cycle. Just before the entrance is the Reduced pressure. It is important to ensure that no flash evaporation occurs in such a way that cavitation leads to disturbances.
  • the system pressure before the pressure reduction is determined by the wishes regarding the further use of the inert gas separated in the gas-liquid separator. If it is to be returned to the inert gas, the pressure is high, so that as little as possible vaporous working fluid enters the inert gas during deposition. In this case, the booster pump only has to compensate for the pressure losses that must be overcome in the resulting inert gas circulation. If the inert gas to be discarded, can be dispensed with higher pressure. However, then losses of working fluid must be compensated.
  • safety container inert gas container, booster pump, gas-liquid separator and the associated lines and fittings are integrated together in a pressure-tight, hermetically sealed security container. This ensures that the containment and its connections do not themselves become a security risk. As a result, in addition to the safety improvement and the maintenance is simplified because the security container can be replaced quickly.
  • the filled security container is used to remove inert gas, which is, for example, after a repair in the working cycle, in which the working fluid is to be reintroduced thereafter.
  • inert gas which is, for example, after a repair in the working cycle, in which the working fluid is to be reintroduced thereafter.
  • working fluid is pressed by means of inert gas pressure in the working cycle.
  • the working fluid-inert gas mixture is then, without it to heat in the heat exchangers of the cycle, again liquid in the containment fed back from where it returns via the pressure booster pump and the gas-liquid separator in the working circuit.
  • the inert gas can be practically completely separated in this way.
  • the invention also includes a safe method for draining the working fluid circulation of its refilling and removing inert gas from the working fluid circulation using the described apparatus.
  • the shut-off device For emptying from the working fluid circulation, or the filling case for the containment the shut-off device is closed within the working fluid circulation and opened the connection to the containment.
  • the security container 13 is blocked at its output. If the compressor can continue to run, which is not always the case in case of an accident, the propane gas pressure corresponds to the final pressure that the compressor 2 can deliver.
  • FIG. 1 a working fluid circuit and the safety container with inerting equipment
  • Fig. 1 shows a schematic diagram of a working fluid circuit 1 with a compressor 2, a condenser 3, a pressure reduction 4 and an evaporator 5 in a closed housing 6.
  • the housing 6 has a heat source connection 7, a heat source flow 8, a heat sink flow 9th and a heat sink connection 10.
  • the working fluid circulation 1 is operated in this example with the flammable working fluid propane, which is also known by the name R290. Shown are only the most important shut-off devices, of course, the expert will provide further shut-off devices and kickback devices.
  • the three-way valve 11 is switched so that a passage of the working fluid from the compressor 2 to the condenser 3 is prevented while the previously closed passage from the compressor 2 to the safety container 13 through the working fluid supply line 12 becomes.
  • the security container 13 is blocked at its output. If the compressor can continue to run, which is not always the case in case of an accident, the propane gas pressure corresponds to the final pressure that the compressor 2 can deliver.
  • inert gas can be forced out of the pressure vessel 14 via the inert gas line 23, the working fluid supply line 21 and the pressure reducing valve 22 into the working fluid circulation 1.
  • the actuation of the valves should be possible in this case by means of emergency power.
  • the three-way valve 11 in this case closes the circuit 1 and directs the propane-inert gas mixture to the safety tank 13 through the working fluid supply line 12. Also in the case of a power failure, the filling of the containment can be ensured while inerting the working fluid circulation in this way.
  • the addition of the inert gas also causes a reduction in the risk of ignition at the leakage-related outlet.
  • this containment including its barriers can also be designed for significantly higher pressures than for normal operation. In particular, it must be designed to the same higher pressure as the inert gas container, so that an overload is prevented when connecting the two containers.
  • the pressure in the safety container 13 is first increased significantly by opening the check valve 16, by inert gas the inert gas inlet 15 flows.
  • the check valve 16 can also be designed as a controllable pressure reducing valve. When choosing nitrogen as an inert gas, the temperature drop in the pressure reduction is observed, this temperature drop should be done in the containment by design measures, which can be effected by integration of the check valve 16 in the head of the containment. A drop in temperature in the containment is desired.
  • the propane in it liquefies and can be withdrawn as a liquid phase in the lower part of the containment. While initially a pure liquid phase is withdrawn, the flow in the containment vessel 13 causes an increasing mixing with inert gas, until at the end of the emptying process only inert gas is present. For this reason, this trigger can not be connected directly to the working fluid circulation.
  • the withdrawn from the security container phase is first increased by means of the booster pump 17, then cooled in the cooler 18 and subsequently fed via the line 19 to the gas-liquid separator 20.
  • the cooling can be done by various measures, it can be used for this purpose a cooling battery, which was cooled before emptying, but it can also be done an external cooling.
  • the cooling is optional.
  • the gas-liquid separator 20 is preferably carried out as a cyclone separator, wherein the liquid phase is forced by the vortex to the edge and withdrawn in the hopper, while the gas phase can be recycled back into the inert gas.
  • the gas phase can be recycled back into the inert gas.
  • This pressure difference is to be handled by the booster pump 17. That traces of the gaseous propane can get into the Inertgas justifyer 14 in this way with the circulated inert gas, may be tolerated because the intended functionality is not affected by this, if necessary, the gas-liquid separator 20 and an adsorptive fine cleaning with respect to propane respectively.
  • the liquid propane phase is recycled via the working fluid supply line 21 into the working fluid circuit 1, wherein the high pressure applied there is correspondingly reduced by a pressure reducing valve 22 on the working fluid circuit 1 in order to reliably avoid a pressure overload of the working fluid circulation.
  • a pressure reducing valve 22 on the working fluid circuit 1 in order to reliably avoid a pressure overload of the working fluid circulation.
  • the three-way valve 11 initially remains open to the safety container 11, so that inert gas to be rejected is conveyed into the containment vessel, while propane enters the circulation via the working fluid supply line 21 1 flows. It is therefore useful to connect this working fluid supply line 21 immediately behind the three-way valve 11, so that the non-inflatable dead space between discharge and supply line remains as small as possible.
  • the working fluid supply line 12 is closed and the three-way valve 11 is opened in the working fluid circulation. With the inert gas-propane mixture, which in the process has been flushed into the safety container 13, the procedure is then as in a normal filling process.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP18203625.1A 2017-12-04 2018-10-31 Dispositif pour effectuer en toute sécurité un cycle de rankine thermodynamique en virage à gauche et sa vidange et son remplissage en toute sécurité au moyen d'un fluide de travail inflammable et procédé pour vider en toute sécurité un fluide de travail inflammable Active EP3492846B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL18203625T PL3492846T3 (pl) 2017-12-04 2018-10-31 Urządzenie do bezpiecznego przeprowadzania termodynamicznego cyklu clausiusa-rankine’a w kierunku w lewo oraz jego bezpiecznego opróżniania i napełniania łatwopalnym płynem roboczym oraz sposób bezpiecznego opróżniania z łatwopalnego płynu roboczego
HRP20201410TT HRP20201410T1 (hr) 2017-12-04 2020-09-03 Uređaj za sigurno provođenje clausius-rankineovog ciklusa u lijevom smjeru vrtnje, njegovo sigurno pražnjenje i punjenje uz pomoć zapaljivog radnog fluida, te postupak sigurnog pražnjenja zapaljivog radnog fluida

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017128702.7A DE102017128702A1 (de) 2017-12-04 2017-12-04 Sicherheitsbehälter für Arbeitsfluid

Publications (2)

Publication Number Publication Date
EP3492846A1 true EP3492846A1 (fr) 2019-06-05
EP3492846B1 EP3492846B1 (fr) 2020-06-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18203625.1A Active EP3492846B1 (fr) 2017-12-04 2018-10-31 Dispositif pour effectuer en toute sécurité un cycle de rankine thermodynamique en virage à gauche et sa vidange et son remplissage en toute sécurité au moyen d'un fluide de travail inflammable et procédé pour vider en toute sécurité un fluide de travail inflammable

Country Status (6)

Country Link
EP (1) EP3492846B1 (fr)
DE (1) DE102017128702A1 (fr)
DK (1) DK3492846T3 (fr)
ES (1) ES2817439T3 (fr)
HR (1) HRP20201410T1 (fr)
PL (1) PL3492846T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019118977A1 (de) * 2019-02-06 2020-08-20 Vaillant Gmbh Adsorberkühlung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114529A1 (de) * 1991-05-03 1993-02-11 Aero Tech Klima Kaelte Sicherheitseinrichtung fuer eine kaeltetechnische anlage
JP2004116885A (ja) * 2002-09-26 2004-04-15 Mitsubishi Electric Corp 冷凍空調サイクル装置の取り扱い方法、冷凍空調サイクル装置の冷媒回収機構
US20150059367A1 (en) * 2013-09-04 2015-03-05 University Of Dayton Active charge control methods for vapor cycle refrigeration or heat pump systems
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HRP20201410T1 (hr) 2021-02-05
DE102017128702A1 (de) 2019-06-06
PL3492846T3 (pl) 2020-11-16
ES2817439T3 (es) 2021-04-07
DK3492846T3 (da) 2020-09-07

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