EP4137738A1 - Unité électrique de déclenchement, dispositif de déclenchement doté d'une telle unité de déclenchement et d'une unité de soupape, ainsi que réservoir de gaz comprimé doté d'un tel dispositif de déclenchement - Google Patents

Unité électrique de déclenchement, dispositif de déclenchement doté d'une telle unité de déclenchement et d'une unité de soupape, ainsi que réservoir de gaz comprimé doté d'un tel dispositif de déclenchement Download PDF

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Publication number
EP4137738A1
EP4137738A1 EP22177240.3A EP22177240A EP4137738A1 EP 4137738 A1 EP4137738 A1 EP 4137738A1 EP 22177240 A EP22177240 A EP 22177240A EP 4137738 A1 EP4137738 A1 EP 4137738A1
Authority
EP
European Patent Office
Prior art keywords
housing
unit
valve
tripping
longitudinal axis
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.)
Pending
Application number
EP22177240.3A
Other languages
German (de)
English (en)
Inventor
Frank Felten
Karl Bermes
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.)
Fiwarec GmbH
Original Assignee
Fiwarec 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
Application filed by Fiwarec GmbH filed Critical Fiwarec GmbH
Publication of EP4137738A1 publication Critical patent/EP4137738A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/032—Orientation with substantially vertical main axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/058—Size portable (<30 l)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0382—Constructional details of valves, regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/013—Carbone dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/014—Nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/016—Noble gases (Ar, Kr, Xe)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/036—Very high pressure (>80 bar)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use
    • F17C2270/0754—Fire extinguishers

Definitions

  • the invention relates to an electrical release unit for activating a valve unit, a release device with such a release unit and a compressed gas container with such a release device.
  • Compressed gas tanks are used to store a gas under pressure, in particular under high pressure.
  • a valve unit is connected to the compressed gas container in order to release the gas from the compressed gas container.
  • an electrical tripping unit can be used, which is in particular electrically controllable.
  • An electrical tripping unit comprises an anchor plate made of a magnetizable material and an actuating rod, which is used to actuate a valve unit connected to the tripping unit.
  • the actuating rod is mechanically coupled to the anchor plate.
  • the actuating rod is held by the anchor plate. Axial actuation of the actuator rod from a retracted position to an extended position is prevented by the armature plate while the armature plate is held in place by the magnetic holding force. It is possible to design the actuating rod and the anchor plate in one piece.
  • the trip unit also has a permanent magnet with a permanent magnetic field that causes a holding force that acts on the anchor plate.
  • the anchor plate is made from a magnetizable material, in particular from a magnetizable steel, in particular from a structural steel or from a free-cutting steel.
  • the anchor plate is held in the retracted position by the permanent magnetic field, in which the valve unit is not actuated, ie not triggered.
  • the actuating rod is in particular made from a non-magnetizable material, in particular non-magnetizable metal, in particular brass.
  • the tripping unit also has an energy storage element that is mechanically coupled to the anchor plate. Due to the mechanical coupling, the energy storage element exerts a displacement force on the anchor plate, which is in the opposite direction to the holding force. The displacement force exerted by the energy storage element counteracts the holding force of the permanent magnet. The holding force of the permanent magnet is greater than that Displacement force of the force storage element, so that the anchor plate and the operating rod are reliably located in the retracted position.
  • the electrical trip unit also has a housing with a longitudinal axis.
  • the triggering unit has an electromagnet, which is arranged in particular in the housing.
  • the electromagnet comprises a pole core and a coil that can be energized.
  • the electromagnet has an opposing magnetic field that opposes the permanent magnetic field.
  • the opposing magnetic fields produce an effective magnetic field that has an effective field strength.
  • the effective field strength results from the difference between the field strength of the permanent magnet and the field strength of the electromagnet.
  • the coil is energized, ie when the electromagnet is energized, the field strength of the permanent magnetic field is reduced by that of the electromagnet, so that the holding force acting on the armature plate is reduced.
  • the holding force is reduced to such an extent that the displacement force of the energy storage element is greater than the reduced holding force of the permanent magnet.
  • the reduced holding force is an effective holding force. It is essential that the effective holding force is smaller than the displacement force of the energy storage element.
  • the trip unit also has an adjustment element, which is used to adjust the position of the pole core in the housing.
  • the position of the pole core can be variably fixed along the longitudinal axis with the setting element.
  • the holding force exerted by the permanent magnet on the armature plate can be adversely affected by unintentional gaps, in particular air gaps, which have an insulating effect on the magnetic holding force.
  • air gaps can result from manufacturing tolerances and/or surface coatings.
  • the adjustment element makes it possible to minimize air gaps, in particular between the pole core and the armature plate, and in particular to completely avoid them.
  • the adjustment element ensures in particular that the anchor plate rests directly against the pole core in the retracted position. In particular, the anchor plate rests against the housing in the retracted position.
  • the setting element enables a so-called zero point adjustment, ie a variably adjustable axial positioning of the pole core relative to the housing. In particular, the setting element enables the axial position of the pole core to be fixed relative to the housing with an accuracy of +/-0.02 mm.
  • the holding force of the permanent magnet is reliably fixed. An undesired reduction in holding force as a result of unknown and/or undefined air gaps is avoided. As a result, the holding force acting on the armature plate can be reliably determined and the energy storage element and the electromagnet can be reliably dimensioned. A malfunction of the electrical release unit and the associated safety risk are excluded.
  • a trip unit according to claim 2 enables the components to be arranged in a protected manner in the housing.
  • the housing is sealed.
  • a cap on the housing can provide a guiding function for the actuating rod along the longitudinal axis.
  • a trip unit according to claim 3 ensures an uncomplicated and stepless adjustment of the axial position of the pole core in the housing.
  • the adjusting element has an adjusting thread, in particular an adjusting external thread, which corresponds to a movement thread of the housing, which is designed in particular as an internal thread.
  • the adjustment thread and the movement thread are each designed as a metric thread and in particular as a fine metric thread.
  • a trip unit enables a particularly uncomplicated and immediate relocation of the pole core in the housing.
  • the pole core is in particular displaceable, in particular axially displaceable, along the longitudinal axis in the housing.
  • the setting element rests directly on the permanent magnet, which rests directly on the pole core.
  • the adjustment element and the permanent magnet as well as the permanent magnet and the pole core are directly coupled to each other in pairs. It is also conceivable for the setting element to be mechanically coupled directly to the pole core, in particular to lie directly against one another, ie to touch one another.
  • a trip unit according to claim 5 ensures that the position of the adjustment element on the housing is secured.
  • a lock nut secures the axial position of the adjustment element on the housing.
  • the lock nut is supported axially on the housing.
  • the lock nut screwed to a spring housing which is attached to the housing of the trip unit and in particular screwed to it.
  • a trip unit according to claim 6 simplifies connection to an electrical power source.
  • a defined, in particular standardized, connection option is guaranteed.
  • a trip unit according to claim 7 is uncomplicated and robust.
  • a force storage element as a helical spring is designed to be small and efficient.
  • a coil spring is durable and available as a standardized component in a cost-effective manner.
  • a helical spring has reduced coefficients of friction, so that the anchor plate can be displaced essentially without friction.
  • the actuation of the trip unit is not negatively influenced by frictional forces.
  • the performance of the trip unit is advantageous.
  • a trip unit according to claim 8 enables the displacement force to be exerted efficiently and directly.
  • a trip unit according to claim 9 ensures uncomplicated and reliable coupling of a spring housing.
  • the spring housing is detachably attached to the housing and in particular screwed thereto.
  • the spring housing is screwed with an external thread into an internal thread of the adjustment element and is thus attached to the housing.
  • a trip unit according to claim 10 simplifies the actuation of the actuating rod.
  • a tripping device essentially has the advantages of the tripping unit according to the invention, to which reference is hereby made.
  • the valve unit is in particular designed to be self-closing, that is to say the valve unit is in a closed state by default.
  • the valve unit can be actuated, ie opened, by means of the triggering unit.
  • a triggering device ensures reliable and uncomplicated opening of the valve unit.
  • a prestressed valve element is provided in the valve unit, the valve element being operable by means of the actuating rod.
  • the actuating rod interacts directly mechanically with the valve element.
  • a compressed gas container according to claim 13 essentially has the advantages of the triggering device, to which reference is hereby made.
  • Each triggering device marked as a whole with 1 comprises an electrical triggering unit 2 which is coupled to a valve unit 3 .
  • the triggering device 1 is connected to the valve unit 3 to a compressed gas tank 4 .
  • Gas, in particular extinguishing gas, in particular carbon dioxide (CO 2 ), argon (Ar) or nitrogen (N 2 ) is stored under pressure, in particular under high pressure, in the compressed gas tank 4 .
  • the internal pressure in the compressed gas tank 4 is in particular at least 50 bar, in particular at least 100 bar, in particular at least 200 bar, in particular at least 250 bar and in particular at least 300 bar.
  • the compressed gas tank 4 can be used in particular in a gas extinguishing system in order to release the gas from the compressed gas tank 4 in the event of a fire to extinguish a fire.
  • the extinguishing gas should be released automatically from the compressed gas tank 4 when a source of fire has been detected.
  • the triggering device 1 is used for the, in particular automated, release of the gas from the pressurized gas container 4.
  • the valve unit 3 has a valve base body 5 on which an insertion socket 6 is designed, in particular in one piece, with which the valve base body 5 is inserted into the compressed gas tank 4 and connected to it.
  • An inflow channel 7 is integrated in the insertion socket 6 , via which compressed gas can flow from the compressed gas tank 4 into the valve unit 3 .
  • a valve seat 8 is designed, on which a valve element 9 according to FIG 1 and 2 sealing.
  • the valve element 9 separates the inflow channel 7 and a discharge channel 11 integrated into a discharge connection piece 10.
  • An extinguishing line can be connected to the discharge connection piece 10. For reasons of clarity, the extinguishing line is not shown in the figures.
  • a protective cap 12 is arranged on the dispensing nozzle 10, in particular screwed on.
  • the delivery channel 11 has a longitudinal axis which is oriented transversely and in particular perpendicularly to a longitudinal axis of the inflow channel 7 .
  • valve element 9 The inflow channel 7 and the discharge channel 11 open into a valve chamber 13 in which the valve element 9 is arranged so that it can be displaced and is sealed off by means of a valve element sealing element 14 .
  • the valve element 9 can be displaced along an axial direction which is in particular oriented parallel to the longitudinal axis of the inflow channel 7 .
  • the axial displacement causes the valve element 9 to be displaced away from the valve seat 8 or toward the valve seat 8 .
  • the valve element sealing element 14 is designed in particular as an O-ring and is arranged in an outer groove of the valve element 9 .
  • the valve element sealing element 14 is in sealing contact with an inner wall of the valve chamber 13 .
  • a seat element 15 is arranged on the valve element 9 on a lower end face facing the valve seat 8 .
  • the seat element 15 is in particular made of a sealing material.
  • the seat element 15 is in the form of an annular disk executed and arranged in a corresponding frontal recess on the valve element 9 . In the non-activated arrangement of the triggering device 1 according to 1 the seat element 15 rests against the valve seat 8 in a sealing manner.
  • a throttle element 16 is arranged on the valve element 9 facing the inflow channel 7 .
  • the throttle element 16 has a sleeve-like design, is screwed into the valve element 9 at the end and has an outer annular collar 17 facing the inflow channel 7 .
  • the annular collar 17 serves as an axial fixation for the seat element 15.
  • the seat element 15 is fastened axially to the valve element 9 by means of the throttle element 16.
  • the throttle element 16 is sealed off from the seat element 15 by means of a throttle element sealing element 18 which is designed as an O-ring.
  • the throttle element 16 has an axially oriented throttle channel 19 with a throttle opening 20 facing the inflow channel 7 .
  • the throttle channel 19 is designed to be continuous, ie it extends along the length of the valve element 9 .
  • a fluidic connection from the inflow channel 7 into the valve chamber 13 is formed via the throttle channel 19 .
  • the throttle opening 20 has a minimum inside diameter d i,min which is smaller, in particular significantly smaller than an inside diameter d i,Z of the inflow channel 7.
  • the throttle opening 20 is a pressure compensation bore that connects the valve chamber 13 to the inflow channel 7.
  • the pressure compensation bore makes it possible for a pressure drop in the valve chamber 13 to be compensated for by the smallest of leaks, in order to prevent the valve unit 3 from being triggered unintentionally.
  • the valve chamber 13 can be closed in a sealed manner by means of a pilot valve 21 .
  • the pilot valve 21 has a pilot valve body 22 with an axial bore on, in which a release pin 23 is arranged axially displaceable.
  • the pilot valve body 22 is in particular screwed into the valve body 5 .
  • a release pin sealing element 24, in particular in the form of an O-ring, is attached to the release pin 23. in the in 1 and 2 In the non-triggered arrangement of the valve unit 3 shown, the trigger pin with the trigger pin sealing element 24 bears in a sealing manner against a sealing surface 25 of the pilot valve base body 22 . As a result, the valve chamber 13 is sealed off from the environment.
  • a transverse channel 26 in the valve body 5 and in particular one or more transverse bores 27 in the side wall of the valve body 5 are in fluid connection with the passage channel of the pilot valve 21 .
  • the transverse channel 26 is arranged in particular on an upper side of the pilot valve 21 facing away from the inflow channel 7 .
  • the valve chamber 13 can be vented via the transverse channel and the transverse bores 27 .
  • the triggering unit 2 is connected to the valve unit 3 by means of an adapter 28 and a union nut 29 held thereon.
  • the union nut 29 is screwed with an external thread into a corresponding internal thread of the valve body 5 .
  • the front side of the adapter 28 rests against the pilot valve 21 , in particular the pilot valve base body 22 .
  • the tripping unit 2 has an essentially cylindrical housing 30 with a longitudinal axis 31 .
  • a hood 32 is fastened, in particular screwed, to the housing 30 on an underside facing the valve unit 3 .
  • the hood 32 forms a lower cover or cap of the housing 30.
  • the hood 32 delimits a displacement 33 which extends along the longitudinal axis 31.
  • the hood 32 is relative to the housing 30 by means of a hood sealing element, in particular in the form of a O-rings 34, sealed.
  • the hood 32 has a connection pin 35, which is in particular formed in one piece, to which the adapter 28 is releasably attached and in particular screwed.
  • An anchor plate 36 is arranged in the cubic capacity 33 enclosed by the hood 32 and the housing 30 .
  • the armature plate 36 rests on the underside of the housing 30 at the front.
  • the anchor plate 36 is designed in the form of an annular disk.
  • the anchor plate 36 is made of a magnetizable material, in particular in one piece.
  • the anchor plate 36 has an actuating rod 37 which extends along the longitudinal axis 31 .
  • the anchor plate 36 and the actuating rod 37 are each designed separately, ie in two parts. It is conceivable that the anchor plate 36 is designed in one piece with the actuating rod 37 .
  • the actuating rod 37 is passed through a through-opening in the anchor plate 36 and is held axially by a radial collar 38 on an upper side of the anchor plate 36 facing the housing 30 .
  • the radial collar 38 has an outer diameter, oriented with respect to the longitudinal axis 31, which is larger than an inner diameter of the through-opening in the anchor plate 36.
  • the actuating rod 37 extends along the longitudinal axis 31 through the displacement 33 and through a central opening in the hood 32 and in particular the hood pin 35 and the adapter 28.
  • the actuating rod 37 protrudes into the valve body 5.
  • the actuating rod is arranged at an axial distance from the pilot valve 21 and in particular from the release pin 23 .
  • An electromagnet 39 is arranged in the housing 30 and has a central pole core 40 and a coil 41 surrounding the pole core 40 .
  • the coil 41 is electrically connected to a connector 42 .
  • the connection element 42 is designed in the form of an electrical plug and enables connection to an electrical power source.
  • the coil 41 is positioned in the housing 30 by means of a frame-like holding element 43 and is thereby held in particular axially with respect to the longitudinal axis 31 .
  • the holding element 43 is held in place by a plurality of radial screws which are guided through external bores in the housing 30 . In 1 only one radial screw 44 is shown, which is partially covered by the connection element 42 . Further radial screws 44 are arranged in particular along the outer circumference of the housing 30, ie in other sectional planes.
  • the pole core 40 is designed essentially as a hollow cylinder. It rests against the anchor plate 36 with its lower annular end face. On its opposite end face, the pole core 40 has a circumferential radial overhang 45 . In the sectional view according to 1 the pole core 40 is essentially T-shaped.
  • a permanent magnet 46 is arranged on the pole core 40 on its upper side opposite the armature plate 36 .
  • the permanent magnet 46 is designed in the form of an annular disk.
  • the permanent magnet 46 rests against the radial projection 45 on the front side.
  • the permanent magnet 46 has a permanent magnetic field that acts on the armature plate 36 and exerts a holding force F H on the armature plate 36 .
  • the holding force F H is oriented along the longitudinal axis from the anchor plate 36 to the permanent magnet 46 .
  • An adjusting element 47 is arranged on the permanent magnet 46 on its upper side facing away from the pole core 40 and is arranged sealed in the housing 30 by means of an adjusting element sealing element 48 .
  • the adjusting element 47 has an adjusting thread 49 which is designed in one piece as an external thread on the adjusting element 47 which is designed essentially in the manner of a sleeve.
  • the adjustment thread 49 engages in a motion thread 50 of the housing.
  • the movement thread 50 extends from an upper end of the housing 30 along the longitudinal axis 31.
  • the movement thread 50 is designed as an internal thread on the housing 30 accordingly.
  • the adjustment thread 49 and the movement thread 50 are designed as metric fine threads.
  • the adjustment element 47 protrudes in the axial direction with respect to the longitudinal axis 31 on an upper side of the housing 30 .
  • a lock nut 51 is screwed onto the adjusting element 47 and is supported axially on the end face of the housing 30 .
  • the axial position of the adjustment element 47 relative to the housing 30 is secured by means of the lock nut 51 .
  • the adjusting element 47 is designed essentially as a hollow cylinder with a transverse floor 52.
  • a spring housing 53 is supported axially on the transverse floor 52 and is sealed off from the adjusting element 47 by means of a spring housing sealing element 54.
  • the spring housing 53 is screwed with an external thread into a corresponding internal thread in the setting element 47 .
  • the spring housing 53 is designed essentially as a hollow cylinder and is held concentrically with respect to the longitudinal axis 31 on the setting element 47 .
  • the spring housing has a spring chamber in which a spring bolt 55 is arranged in an axially displaceable manner.
  • the Spring Bolt 55 forms a ram.
  • the spring bolt 55 is guided axially with a cylinder section 56 in a guide bore 57 of the spring housing 53 and is sealed in the guide bore 57 by means of a spring bolt sealing element 58 .
  • the spring bolt 55 has a transverse plate 59 on which a helical compression spring 60 is supported axially.
  • the transverse plate is designed in one piece with the spring bolt 55.
  • the transverse plate 59 forms a plate section of the spring bolt 55.
  • the helical compression spring 60 forms a mechanical force storage element.
  • the helical compression spring 60 is axially supported at its opposite upper side on a bottom surface 61 of the spring housing 53 which delimits the interior space of the spring housing 53 .
  • the spring bolt 55 is arranged at a distance from the transverse floor 52 .
  • the helical compression spring 61 is prestressed, ie axially compressed.
  • the helical compression spring 60 exerts a displacement force Fv on the plate section 59, ie on the spring bolt 55.
  • the displacement force Fv is according to 1 directed vertically downwards, i.e. oriented in the opposite direction to the holding force F H .
  • the displacement force Fv is smaller than the holding force F H .
  • the anchor plate 36 is reliably held on the housing 30 and the pole core 40 .
  • the spring bolt 55 makes contact with a transmission rod 62 on an underside of the spring bolt 55, that is to say on a lower end face of the plate section 59, and is therefore mechanically coupled thereto.
  • the transmission rod 62 mechanically represents a connection in the axial direction between the spring bolt 55 and the actuating rod 37 the permanent magnet 46 and in the pole core 40 out.
  • the transmission rod is essentially cylindrical and rests with an upper face on the plate section 59 of the spring bolt 55 and with the opposite face on the radial collar 38 of the actuating rod 37 . It is also fundamentally conceivable that the transmission rod is designed integrally with the actuating rod 37 or integrally with the spring bolt 55 or integrally with both.
  • triggering device 1 in particular the triggering unit 2 and the valve unit 3, is explained in more detail below.
  • the compressed gas tank 4 is closed by means of the valve unit 3. Gas can flow from the compressed gas tank 4 into the valve unit 3 via the inflow channel 7 . The gas flows through the throttle opening 20 and the throttle channel 19 into the valve chamber 13. A further flow of gas out of the valve chamber 13 is via the valve chamber 13, in particular to the transverse channel 26 and the transverse bores 27 through the release pin 23 and the release pin arranged thereon - Sealing element 24 prevented.
  • the gas arranged in the valve chamber 13 is arranged in the valve chamber 13 with the same pressure, i.e. with high pressure, and acts on the rear side of the valve element 9 with a closing force on the valve element 9, which presses the valve element 9 in the direction of the inflow channel 7.
  • This closing force is greater than an opening force which acts on the valve element 9 from the gas via the inflow channel 7, since the rear cross-sectional area on the rear side of the valve element 19 facing the valve chamber 13 is larger than that which faces the inflow channel 7. Due to these surface ratios, the valve element 9 is in 1 Arrangement shown with the seat element 15 pressed against the valve seat 8.
  • the inflow channel 7 is sealed. A gas flow from the inflow channel 7 into the discharge channel 11 is reliably ruled out and prevented.
  • the trigger unit 2 in a non-actuated, so not activated state.
  • the coil 41 is not energized.
  • the holding force F H already explained above acts on the anchor plate 36 and pulls the anchor plate 36 with the actuating rod 37 held thereon upwards in the direction of the housing 30 .
  • the actuating rod 37 is arranged at an axial distance from the release pin 23 .
  • the actuating rod 37 is according to 1 in the retracted position, ie retracted into the housing 30.
  • the holding force F H is counteracted by the displacement force Fv, which is exerted on the actuating rod 37 by the energy storage element 60 via the spring bolt 55 and the transmission rods 62 .
  • the permanent magnet 46 and the force storage element 60 are in particular dimensioned such that the holding force F H is greater than the displacement force Fv.
  • the electromagnet 39 is activated by the coil 41 being energized.
  • the electromagnet 39 has an opposing magnetic field that counteracts the permanent magnetic field of the permanent magnet 46 .
  • the effective holding force F H,eff is reduced compared to the holding force F H in the de-energized state of the coil 41 .
  • the effective holding force F H, eff is smaller than the displacement force Fv, which occurs as a result of the energy storage element 60 acts on the spring bolt 55.
  • the spring bolt 55 is displaced downwards along the longitudinal axis 31 as a result of the displacement force Fv in the spring housing 53 , ie towards the transverse base 52 .
  • the displacement of the spring bolt 55 immediately causes a displacement of the transmission rod 62 and the actuating rod 37.
  • the downwardly displaced actuating rod 37 comes into contact with the release pin 23 in the valve unit 3 and displaces it with the release pin sealing element 24 away from the sealing surface 25.
  • the valve chamber 13 is no longer sealed and gas can escape from the valve chamber 13 past the sealing surface 25 via the transverse channel 26 and the transverse bores 27 to the atmosphere.
  • valve element 9 Due to this pressure loss in the valve chamber 13, the valve element 9 is lifted off the valve 8 and displaced in the direction of the pilot valve 22. This creates a direct fluid connection between the inflow channel 7 and the discharge channel 11 . Gas can be discharged from the compressed gas tank 4 via the valve unit 3, in particular the discharge nozzle 10, which is also referred to as the valve outlet.
  • the holding force F H which is exerted by the permanent magnet 46 on the armature plate 36, is reinforced by the metallic elements, in particular the housing 30 and the pole core 40.
  • the armature plate 36 rests on the underside of the housing 30 at the front.
  • adjustment element 47 enables fine adjustment of pole core 40. This ensures that the Pole core 40 as well as housing 30 abut axially against armature plate 36 . Accidental axial gaps are avoided.
  • the magnetic holding force F H can be reliably ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
EP22177240.3A 2021-08-18 2022-06-03 Unité électrique de déclenchement, dispositif de déclenchement doté d'une telle unité de déclenchement et d'une unité de soupape, ainsi que réservoir de gaz comprimé doté d'un tel dispositif de déclenchement Pending EP4137738A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021209075.3A DE102021209075A1 (de) 2021-08-18 2021-08-18 Elektrische Auslöseeinheit, Auslöseeinrichtung mit einer derartigen Auslöseeinheit und einer Ventileinheit sowie Druckgasbehälter mit einer derartigen Auslöseeinrichtung

Publications (1)

Publication Number Publication Date
EP4137738A1 true EP4137738A1 (fr) 2023-02-22

Family

ID=81941066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22177240.3A Pending EP4137738A1 (fr) 2021-08-18 2022-06-03 Unité électrique de déclenchement, dispositif de déclenchement doté d'une telle unité de déclenchement et d'une unité de soupape, ainsi que réservoir de gaz comprimé doté d'un tel dispositif de déclenchement

Country Status (2)

Country Link
EP (1) EP4137738A1 (fr)
DE (1) DE102021209075A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2117413A1 (fr) * 1971-04-08 1972-10-12
EP2339681B1 (fr) * 2009-12-18 2013-09-18 Bayerische Motoren Werke Aktiengesellschaft Actionneur électromagnétique
DE102015203486A1 (de) * 2015-02-26 2016-09-01 Minimax Gmbh & Co. Kg Ventil zum Schalten von Fluiden, Löschanlage und Verfahren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2117413A1 (fr) * 1971-04-08 1972-10-12
EP2339681B1 (fr) * 2009-12-18 2013-09-18 Bayerische Motoren Werke Aktiengesellschaft Actionneur électromagnétique
DE102015203486A1 (de) * 2015-02-26 2016-09-01 Minimax Gmbh & Co. Kg Ventil zum Schalten von Fluiden, Löschanlage und Verfahren

Also Published As

Publication number Publication date
DE102021209075A1 (de) 2023-02-23

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