EP1968715A1 - Fire extinguisher with a container holding a fire-extinguishing substance, and corresponding compressed-gas cylinder - Google Patents
Fire extinguisher with a container holding a fire-extinguishing substance, and corresponding compressed-gas cylinderInfo
- Publication number
- EP1968715A1 EP1968715A1 EP06830847A EP06830847A EP1968715A1 EP 1968715 A1 EP1968715 A1 EP 1968715A1 EP 06830847 A EP06830847 A EP 06830847A EP 06830847 A EP06830847 A EP 06830847A EP 1968715 A1 EP1968715 A1 EP 1968715A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- extinguishing agent
- compressed gas
- valve
- gas cylinder
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
- A62C13/66—Portable extinguishers which are permanently pressurised or pressurised immediately before use with extinguishing material and pressure gas being stored in separate containers
- A62C13/72—Portable extinguishers which are permanently pressurised or pressurised immediately before use with extinguishing material and pressure gas being stored in separate containers characterised by releasing means operating essentially simultaneously on both containers
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
- A62C35/023—Permanently-installed equipment with containers for delivering the extinguishing substance the extinguishing material being expelled by compressed gas, taken from storage tanks, or by generating a pressure gas
Definitions
- the present invention relates to a fire extinguishing device with an extinguishing agent container and a compressed gas cylinder which is particularly suitable for use together with this extinguishing agent container.
- fire extinguishers or fire extinguishers with extinguishing agent containers are known.
- portable fire extinguishers and stationary or mobile fire extinguishing devices.
- the former are particularly suitable for manual use, whereas the latter are often used in automatic fire extinguishing systems or car use.
- Many fire extinguishers, especially portable have the disadvantage that they can not be used reliably in any spatial orientation. Namely, the extinguishing agent can not be completely applied in every orientation.
- extinguishing agent containers are known in particular in connection with automatic fire extinguishing systems. These have over the fire extinguishers described above in particular the advantage that a complete expulsion of the extinguishing agent is ensured even with any spatial orientation of the extinguishing agent container. They are therefore already used in permanently installed in vehicles, automatic fire extinguishing systems, where it can come to an arbitrary orientation of the extinguishing agent container by an accident.
- An extinguishing agent container with a piston is described in WO 96/36398. This is particularly suitable for closed rooms, such as passenger compartments or engine compartments, and includes an extinguishing agent container with a cylindrical, sealed on both sides of the container casing and a piston axially displaceable in the container jacket.
- the piston in the extinguishing agent container, separates an extinguishing agent space containing an extinguishing agent from a propellant space containing a pressurized propellant gas.
- the extinguishing agent space is provided at an exit for the extinguishing agent with a trigger valve. Upon actuation of the trigger valve, the propellant gas, by displacement of the piston into the extinguishing agent space inside, drive the extinguishing agent from the extinguishing agent container.
- a fire extinguishing device with an extinguishing agent container according to WO 96/36398 has the particular disadvantage that the extinguishing agent pressure during the discharge of the extinguishing agent is not constant. To ensure complete discharge, a considerable expansion of the volume of propellant gas is required. This brings during the expulsion of the extinguishing agent (at unchanged temperature), however, a strong pressure drop of the propellant gas and consequently also the extinguishing agent with it. As a result, the throughput of extinguishing agent falls over the deletion. Furthermore, as extraction progresses, the matching of extinguishant pressure to commonly connected atomizer nozzles for the extinguishant of such equipment degrades.
- US 4,889,189 describes the construction of an extinguishant container having an inner expandable membrane which separates the extinguishant space from the propellant space. Furthermore, a method for selecting an optimal amount of extinguishing agent and a most suitable propellant pressure will be described. Among other things, the construction as well as the method according to US Pat. No. 4,889,189 aim to reduce the aforementioned disadvantageous pressure drop. However, the dropping of the extinguishing agent pressure and the extinguishing agent flow rate during the erasing operation can not be satisfactorily prevented either with this extinguishing agent container or with this method.
- Object of the present invention is therefore to propose a fire extinguishing device which is functional in any spatial orientation and ensures increased reliability.
- a fire extinguishing device comprising an extinguishing agent container with a sealed on both sides of the container casing and an axially displaceable in the container casing piston which separates an extinguishing agent space in the extinguishing agent from an expansion space.
- an internal compressed gas reservoir is provided in the extinguishing agent container.
- the compressed gas storage forms a spatially separated from the expansion chamber pressure gas chamber.
- the compressed gas chamber is used to store a propellant gas at high storage pressure and for controlled pressurization of the expansion space with reduced extinguishing pressure.
- the piston is arranged displaceably along the pressure gas chamber.
- the compressed gas chamber according to the invention which is integrated into the container by the compressed gas storage device, is independent of the expansion space, and thus also of the variable volume of the expansion space used to receive the propellant.
- This makes it possible on the one hand avoid using suitable switching means that the expansion space and the extinguishing agent in the idle state are under operating pressure, on the other hand allows this arrangement, under Use of suitable pressure control means, a controlled pressurization of the expansion space, in particular with a relatively constant low pressure over the entire duration of the Löschschschaustrags.
- the propellant pressure in the expansion space and consequently also the pressure (medium) pressure in the construction according to the invention is not only substantially constant over the duration of the extinguishing agent discharge but in the absolute value freely selectable and thus adaptable for various applications.
- the fire extinguishing device which unites extinguishing agent tank and pressure medium source in one unit.
- this fire-extinguishing device is of particular interest for use in goods and passenger transport vehicles.
- a line overhead as it arises when using separate, external pressure vessels as a pressure medium source largely eliminated, resulting in addition to cost reduction, an increase in safety and reliability.
- An appropriate in coaxial pressure gas chamber annular piston has, for example, a circular cylindrical outer shape and is provided with a coaxial circular cylindrical guide opening.
- a pressurized gas cylinder with an inside at least partially cylindrical outer wall is provided as the compressed gas reservoir in the extinguishing agent container.
- the piston is designed as an annular piston and slidably guided along the cylindrical part of the outer wall of the compressed gas cylinder.
- the pressure gas chamber is formed by a, preferably specially processed, compressed gas cylinder so that the piston on the bottle itself can be slidably mounted, whereby an additional guide is saved.
- the fire extinguishing device comprises a cylindrical guide casing which is located inside the extinguishing agent container, and the pressurized gas reservoir is a pressurized gas cylinder which is located inside the cylinder cylindrical guide sheath is arranged, provided.
- the piston is configured as an annular piston and guided displaceably along the cylindrical guide shell.
- the fire extinguishing device advantageously further comprises a pressure control valve for controlled pressurization of the expansion space, which is connected to the input or to the output of the switching valve to urge the expansion space with compressed gas at a predetermined, substantially constant pressure during the deletion process.
- a pressure control valve for controlled pressurization of the expansion space which is connected to the input or to the output of the switching valve to urge the expansion space with compressed gas at a predetermined, substantially constant pressure during the deletion process.
- the switching valve has at least one pneumatic control port, and a temperature-sensitive, pressure-loaded detector line is present, which is connected to the pneumatic control port of the switching valve to open the pressure drop in the detector line, the switching valve.
- the fire extinguishing device comprises a switching valve having a first and a second pneumatic control connection, a first pressure control valve, and a connection for a detector line, wherein the first pressure control valve is connected directly to the input side of the pressure gas chamber and the output side to the input of the switching valve, wherein the Connection for the detector line to the first control port and the output of the first pressure control valve is additionally connected to the second control port, and wherein the switching valve output side is connected to the expansion space.
- This embodiment is particularly suitable for expelling extinguishing agent at an average pressure which coincides with that in the detector line.
- the fire extinguishing device additionally comprises a second pressure regulating valve, which input side at the output of the first pressure control valve and the output side at the input of the switching valve or input side at the output of the switching valve and the output side on
- Expansion room is connected.
- This embodiment is particularly suitable for expelling extinguishing agent at a low pressure, which is lower than that in the detector line.
- the fire extinguishing device additionally comprises a second pressure regulating valve which is connected on the input side to the first control connection and on the output side to the connection for the detector line.
- This embodiment is particularly suitable for expelling extinguishing agent at a high pressure, which is greater than that in the detector line.
- the fire extinguishing device further comprises a compensation line for compensating leaks in the detector line, which is connected to the output of the first pressure regulating valve and connected to the terminal for the detector line, wherein in the compensation line a check valve is arranged, which at excessive pressure loss in the detector line an excessive Loss of propellant over the compensation line prevented.
- the fire extinguishing device further comprises a creeping gas safety device, which is connected to the output of the switching valve to prevent a creeping pressure build-up in the expansion space.
- a creeping gas safety device which is connected to the output of the switching valve to prevent a creeping pressure build-up in the expansion space.
- the fire extinguishing device further comprises a compressed gas cylinder inside the extinguishing agent container, the compressed gas cylinder comprising the pressure chamber and having a thickened bottle bottom, which at least the switching valve, the first pressure control valve and possibly the second pressure control valve receives. It is advantageous if the connecting line, which leads via the switching valve, the first pressure control valve and optionally the second pressure control valve from the pressure chamber to the expansion chamber is formed by holes in the dashboard. In this design, the fire extinguishing device is even more compact, leak-proof, and robust.
- the proposed herein design of the extinguishing agent container allows the extinguishing agent container to a lower (erase) pressure, for. ⁇ 90bar, although the propellant gas is at a substantially higher storage pressure, e.g. > 150bar is stored in the separate compressed gas storage.
- the piston comprises an inner guide bushing for guiding on the cylindrical part of the compressed gas cylinder or on the guide casing and an outer guide shirt for guiding the container casing and wherein the guide bushing has a smaller axial extent than the guide shirt , As a result, the piston can be acted upon in the stop from the center of the vessel with propellant.
- the piston is preferably guided on the basis of a, corresponding to the cross section of the pressure gas chamber recess at this, so that it surrounds the pressure gas chamber. It is also possible to arrange pistons and compressed gas chamber with complementary cross sections in the container casing so that the piston does not surround the pressure gas chamber.
- the present invention also relates to a specially developed compressed-gas cylinder and in particular to its production method.
- a specially developed compressed-gas cylinder and in particular to its production method.
- An inventive production method for such a compressed gas cylinder comprises the following steps:
- ⁇ backward extrusion of a blank to a molding which comprises a bottle bottom and a cylindrical bottle jacket, wherein the bottle jacket is closed on one side of the bottle bottom;
- the production method is characterized in that
- the reminder is carried out such that the bottle bottom is designed as a solid, thickened bottom plate and
- the processing of the compressed gas cylinder blank to a compressed gas cylinder comprises at least making a receiving bore for a valve in the solid, thickened bottom plate.
- the solid, thickened bottom plate is designed as a cylindrical solid body, which has the same radius as the cylindrical bottle jacket after the backward extrusion.
- the processing of the compressed gas cylinder blank to a compressed gas cylinder preferably the making at least one housing and valve seat bore as a receiving bore for a valve.
- the processing of the compressed gas cylinder blank to a compressed gas cylinder advantageously comprises making at least one connecting bore from the receiving bore to the interior of the compressed gas cylinder and at least one outlet bore from the receiving bore to the outside in the thickened, solid bottom plate.
- the backward extrusion is advantageously carried out in the method that the Base plate has an extension in the longitudinal direction of the compressed gas cylinder, which is 5 to 15 times the wall thickness of the bottle jacket or at least 50mm.
- the processing of the compressed gas cylinder blank into a compressed gas cylinder further preferably comprises the following steps:
- ⁇ making a plurality of housing and valve seat bores, at least one communication bore from a first housing and valve seat bore to the interior of the compressed gas cylinder, and at least one communication bore from another housing and valve seat bore
- the processing of the compressed gas cylinder blank to a compressed gas cylinder preferably further comprises machining the outer surface of the bottle jacket as a cylindrical guide by means of cutting forming.
- FIG. 1 shows a longitudinal section through an extinguishing agent container according to a first embodiment of the invention
- FIG. 2 shows a longitudinal section through an extinguishing agent container according to a second embodiment of the invention
- FIG. 3 is a schematic representation of a first fire extinguishing device for low extinguishing agent pressure with an extinguishing agent container according to the invention
- FIG. 4 shows a schematic representation of a second extinguisher device for medium extinguishing agent pressure with an extinguishing agent container according to the invention
- FIG. 5 shows a schematic representation of a third extinguishing agent pressure extinguishing device with an extinguishing agent container according to the invention
- FIG. 6 shows a side view of the extinguishing agent container according to FIG. 2; 7 shows a partial longitudinal section of the extinguishing agent container according to the sectional plane
- FIG. 9 shows a partial longitudinal section of the extinguishing agent container according to the sectional plane
- FIG. 14 shows a longitudinal section of a compressed gas cylinder blank for use in an extinguishing agent container according to FIG. 2;
- FIG. 15 shows a longitudinal section of a processed, alternative compressed gas cylinder blank for use in an extinguishing agent container according to FIG. 2;
- the extinguishing agent container 10 ' comprises a cylindrical container casing 12', which is closed on both sides by a first closure 14 'and a second closure 16' leak-proof.
- the closures 14 ', 16' are screwed by means of internal threads on external thread of the container casing 12 'and sealed by means of sealing rings.
- a cylindrical guide casing 18 ' is arranged in the extinguishing agent container 10' coaxial with the container casing 12 '.
- the piston 20 ' is designed as an annular piston with a central guide bushing.
- a coaxial pressure gas chamber 26 'lying inside the extinguishing agent container is again spatially separated from the extinguishing agent space 22' and from the expansion space 24 'by a compressed gas cylinder 28' of conventional design.
- both the guide casing 18', the container casing 12 'and the piston 20' are formed as cylindrical bodies in the geometric sense (i.e., not necessarily circularly cylindrical).
- a fitting block 30 ' is screwed onto the connecting thread in the bottleneck of the compressed gas cylinder 28'.
- the Fittings in the armature block 30 ' serve, inter alia, the controlled pressurization of the expansion space 24' with propellant gas from the compressed gas cylinder 28 '. 1, both the guide casing 18 ', the compressed gas cylinder 28' as well as the valve block 30 ', by appropriate shaping of the closures 14', 16 'and a holder 29', securely held in the extinguishing agent container 10 'and against Damage protected arranged.
- the inner volume delimited by the guide casing 18 ' is sealed off from the outside and the extinguishing agent space 22'.
- the piston 20 ' is equipped with known O-ring seals on the inner surface of the container shell 12' and on the guide casing 18 ', which in the longer term penetration of extinguishing agent in the expansion space 24' and penetration of propellant gas in the extinguishing agent space 22 ' reliably prevent, however, without adversely affecting the displaceability of the piston 20 '.
- the operating principle of the extinguishing agent container 10 ' can be summarized as follows.
- the extinguishant space 22 ' is filled with an extinguishing agent, such as water mixed with an additive.
- an extinguishing agent such as water mixed with an additive.
- the extinguishing agent space 22 'nor the expansion space 24' are initially under pressure, ie, the permanent extinguishing agent pressure in the standby state can be, for example, at atmospheric pressure.
- the expansion space 24 ' is ready for operation by means of a switching valve 32' in the fitting block 30 'isolated from the compressed gas cylinder 28'.
- the switching valve 32 ' is triggered, for example, by a detector device explained below, so that only when triggered the propellant gas from the pressure gas chamber 26' in the expansion space 24 'flows (only from this point on the expansion space serves as a "propellant space" for recording the propellant from the pressurized gas chamber is similar to the device known from WO 96/36398.)
- the propellant gas is preferably controlled down to a predetermined extinguishing pressure by a pressure regulating valve or a pressure reducer in the fitting block 30 '(not shown in FIG. With the action of the propellant gas, the piston 20 'is displaced into the original extinguishant space 22' at a constant extinguishing pressure in the direction of the arrow 34.
- the extinguishing agent Upon reaching a predetermined pressure, the extinguishing agent is released from the tank through a diaphragm or a pressure relief valve 36 ' Extinguishing agent container 10 'driven and in a known manner e led by connection 38 'to the point to be deleted.
- the piston via the guide casing 18 ', moves along the pressure gas chamber 26' from the closure 16 '(as in Fig. 1) to the closure 14' (not shown) and reaches the latter when the extinguishing agent is completely discharged.
- the compressed gas cylinder 28 ' is filled with propellant gas under adequately dimensioned accumulator pressure, so that even with smaller leaks a complete expulsion of the entire extinguishing agent is made possible.
- the extinguishing agent container 10 comprises a container shell 12, which is closed on both sides by means of a first and a second closure 14, 16.
- a piston 20 is axially displaceable in the container casing 12, and arranged there separates an extinguishing agent space 22 from an expansion space 24.
- a in the extinguishing agent container 10 internal pressure gas chamber 26 is arranged for controlled pressurization of the expansion space 24, coaxial with the container shell 12 in the extinguishing agent container 10.
- the piston 20 is designed as an annular piston and slidably disposed along the pressure gas chamber 26. As can be seen from FIG.
- the compressed gas chamber 26 is not spatially separated by means of an additional guide casing from the extinguishing agent space 22 and the expansion space 24, but integrally and exclusively by a novel, cylindrical compressed gas cylinder 28 is formed.
- the embodiment according to FIG. 2 differs in that, in the novel compressed-gas cylinder 28, more precisely in its solid, thickened bottle bottom housing and valve seats for almost all fittings required for drilling, compared to conventional compressed gas cylinders.
- the bottle bottom of the compressed gas cylinder 28 itself forms a valve block 30, so that several valves, space-saving and protected against damage, can be accommodated in the bottom of the compressed gas cylinder 28. Said fittings are explained in detail below.
- the piston 20 is mounted axially displaceable directly on the outer surface of the compressed gas cylinder 28 according to arrows 34. It may be advantageous that this outer surface is machined to fit exactly, but this is not absolutely necessary with a sufficiently small manufacturing tolerance. It can also be seen from Fig. 2 that the piston 20 has an inner guide bushing 40 for guiding against the pressure gas chamber 26, i. the compressed gas cylinder 28, and an outer guide shirt 42 for guiding on the container shell 12 includes. In this case, the guide bush 40 has a smaller axial extent than the guide shirt 42.
- an extinguishant line is generally connected to direct the extinguishing agent to the desired location. It can, as shown in Figure 2, a plurality of terminals 38 may be provided, for example, for feeding a plurality of extinguisher lines leading to different locations.
- Fig. 3 shows a first low extinguishant pressure extinguishing device 50 (e.g., 4bar) in a simplified schematic representation.
- the fire extinguishing device 50 comprises the extinguishing agent container 10 with axially displaceable piston 20, which separates the extinguishing agent space 22 from the expansion space 24.
- the pressure vessel 28 with the compressed gas chamber 26 is arranged in the extinguishing agent container 10. It should be noted that for the sake of clarity, in FIGS. 3 to 5, the compressed gas chamber 26 and the compressed gas cylinder 28 are not integrated in the extinguishing agent container 10, but are shown separately.
- the valve block 30 connects the interior of the compressed gas cylinder 28, inter alia, with the expansion space 24 via various fittings.
- a first pressure regulating valve 52 Connected directly to the outlet of the compressed gas cylinder 28 is a first pressure regulating valve 52, which reduces a storage pressure p1 (eg 200 bar) of the propellant in the compressed gas cylinder 28 to a first intermediate pressure p2 (eg 15 bar).
- a switching valve 32 is connected at the output of the pressure regulating valve 52.
- the switching valve 32 is, for example, a 2/2-way valve with blocking in the counterflow direction, which has pneumatic control connections 56, 58.
- the output of the switching valve 32 is connected to a second pressure regulating valve 60, which reduces the intermediate pressure p2 to a driving pressure or extinguishing pressure p3 (eg 4bar) for the expansion space 24.
- the pressure regulating valve 60 could also be arranged directly upstream of the switching valve 32.
- the output of the second pressure regulating valve 60 is connected to the expansion space 24 of the extinguishing agent container 10 via a spring-loaded pressure relief valve 62 (or a place diaphragm).
- the relief valve 62 is set to a certain minimum pressure (less than p3) which must be applied to fill the expansion space.
- the output of the switching valve 32 is guided via a creeping gas safety device 64 to the outside.
- the non-ideal long-term sealing of the switching valve 32 is counteracted by means of a preferably equally non-ideal, or worse, long-term sealing of the creeping gas safety device 64 Externally compensated.
- Figure 3 shows a connected to the expansion space 24 spring-loaded pressure relief valve 66, which ensures a maximum propellant pressure, with a value higher than p3, in the expansion space 24 in case of a defect, for example on one of the pressure control valves 52, 60 by suitable bias. As a result, possible damage, such as an explosion of the pressure medium container 10, for humans and equipment is avoided.
- a manual venting valve 68 simplifies the filling of the extinguishing agent container 10, more precisely the extinguishing agent space 22 with extinguishing agent, by the counterpressure generated in the expansion space 24 can be reduced.
- 3 likewise shows the spring-loaded overpressure valve 36 at the outlet of the extinguishing agent container 10, which allows the extinguishing agent to escape only when a predetermined pressure set by bias (with a value less than p3) is exceeded.
- a predetermined pressure set by bias with a value less than p3
- FIG. 3 also shows a ball valve 70 which is connected to the valve block 30 and which is connected on the one hand to the first control connection 56 of the switching valve 32 and additionally via a check valve 72 to the outlet of the first pressure control valve 52 and on the other hand to a detector line 74.
- the ball valve 70 is opened so that the detector line 70 is directly connected to the first control port 56 of the switching valve 32.
- the ball valve 70 serves to replace the detector line 74 after use.
- the detector line 74 comprises a special hose, which is pressurized with gaseous pressure medium. This pressurized special hose is placed above a potentially fire hazard site 76. It consists of a specially developed, age-resistant and diffusion-proof polymer material.
- a pressure gauge 78 for control purposes and a charge port 80 for initial pressurization are connected to the detector line 74.
- the check valve 72 is located in a compensation line which, by means of a small diameter line, compensates for a potential long-term pressure drop, for example by Brockideale tightness of the ball valve 70, the filling port 80 or other microleaks, by means of propellant gas from the pressurized gas container 28.
- the check valve 72 in this case prevents loss of propellant via the compensation line in the event of a response of the detector line 74.
- the mode of action is similar to that of the creeping gas safety 64th
- the pressure in the detector line 74 is set to p 2, ie equal to the pressure at the outlet of the first pressure regulating valve 52.
- p 2 the pressure at the outlet of the first pressure regulating valve 52.
- a pressure difference arises between the control terminals 56, 58, whereby the switching valve 32 opens without external energy.
- a pressure drop in the detector line 74 arises when, in the event of a fire, the detector line 74 bursts at any point, in particular at the vulnerable point 76 to be protected, under the influence of heat.
- the extinguishing agent is passed to atomizing nozzles 84 of known type, to which the pressure p3 of the extinguishing agent over the entire extinguishing process is optimally tuned.
- About the atomizer nozzles 84 is on the endangered area, the extinguishing agent discharged, which fights the fire.
- FIG. 4 shows a fire extinguishing device 50 "according to a second variant for medium extinguishant pressure (eg 15 bar) in a simplified, schematic representation
- the design of the second fire extinguishing device 50" essentially corresponds to that of the first fire extinguishing device 50.
- the fire extinguishing device 50 "differs only As a result, the extinguishing medium pressure during extinguishing corresponds to the pressure p2 (eg 15 bar) at the outlet of the first pressure regulating valve 52 and in the detector line 74.
- This version with single-stage pressure reduction is therefore suitable, for example, for extinguishing agents and in particular for extinguishing agent nozzles 80, which are to be used at average pressure p2 Since, apart from the different extinguishing pressure and the correspondingly modified armature block 30 ", operation and structure of the fire extinguishing device 50" substantially correspond to those explained above, here renounced a repetition.
- FIG. 5 shows a simplified, schematic representation of a fire extinguishing device 50 '' according to a third variant for high extinguishing agent pressure (eg 90bar.)
- a second pressure regulating valve 60 '' ' between the ball valve 70 and the check valve 72, before the tap for the first control terminal 56, respectively.
- This makes it possible to select the pressure p2 at the outlet of the first pressure control valve 52 substantially higher (eg 90 bar) while maintaining a mean pressure p4 (eg 15 bar) in the detector line 72 with reference to the second pressure control valve 60 '"
- This variant is therefore particularly suitable for extinguishing agents and extinguishing agent nozzles which are to be used at a relatively high pressure p 2. Since the mode of operation and construction otherwise correspond to those described above, unnecessary repetition will also be required here waived.
- Extinguishing agent container 10 With reference to Figure 2 and Figures 6-15 is the structure of the Extinguishing agent container 10 and in particular the compressed gas cylinder 28 and its integrated dashboard 30 explained in more detail.
- first Feuerlöschvorrich- device 50 for relatively low extinguishing pressure eg 4bar
- those skilled in the art will readily be able to make the necessary adjustments according to the second and third variants for medium or high extinguishing pressure.
- FIG. 2 shows in cross section the first pressure control valve 52, which is arranged as a first pressure reducing stage with a correspondingly shaped, multi-stage housing and valve seat bore 89 in the thickened bottom of the compressed gas cylinder 28. 2 also shows a rupture disk device 88, which ensures the maximum internal pressure of the compressed gas cylinder 28 in order to avoid an explosion due to excessive heating, for example in case of fire.
- the thickened bottom plate which forms the main body of the valve block 30, serves as a housing and, for the pressure regulating valve 52, also as a valve seat. From Fig.2 it can be seen that the pressure control valve 52 is connected via a connecting hole 91 directly to the interior of the compressed gas cylinder 28.
- the rupture disc device 88 also includes a multi-stage bore and is connected by means of a connecting bore 93 with the interior.
- a Greet Test port 86 is provided, via which the compressed gas cylinder 28 can be refilled or checked.
- FIG. 6 shows the extinguishing agent container 10 in side view from the side of the second closure 16.
- Figure 6 shows the externally accessible fittings in the instrument block 30, namely first and second pressure control valve 52, 60; Creeping gas fuse 64; Ball valve 70; Rupture disc device 88; 7 shows the extinguishing agent container 10 in partial longitudinal section in the area of the valve block 30.
- the switching valve 32 is provided with a corresponding multistage figen housing and valve seat bore 95 arranged in the dashboard 30.
- the switching valve 32 comprises an inner, axially displaceable control piston 96 which is held in position by means of the control terminals 56, 58 (58 is shown in Fig. 9).
- the ball valve 70 is connected to a connection nipple for the detector line. From Fig.7 also the preferred embodiment of the check valve 72 can be seen.
- the check valve 72 is housed as a blocking element for and together with a central, multi-stage through-bore (see Fig.10) in the control piston 96.
- FIG. 7 further shows the second pressure control valve 60 and its housing and valve seat bore 97 in the valve block 30. The connection between the outlet of the switching valve 32 and the second pressure control valve 60 is ensured by a connection bore 99, which slants with respect to the longitudinal axis of the compressed gas cylinder 28 lies.
- FIG 8 shows, in addition to a further view of the switching valve 32 and the burst disc device 88, the pressure relief valve 66 and the vent valve 68, which are screwed in the second closure and connected directly to the expansion space 24.
- FIG. 9 shows a further view of the switching valve 32 and the first pressure regulating valve 52.
- FIG. 9 shows, in particular, the connection between the outlet of the first pressure regulating valve 52 and the inlet of the switching valve 32, which is secured by a corresponding connecting bore 101 in the thickened bottle bottom, the latter with respect to the longitudinal axis of the compressed gas cylinder 28 extends obliquely.
- the input of the switching valve 32 coincides with the control connection 58.
- 9 also shows a valve insert 98, which forms the first pressure regulating valve 52 together with the housing and valve seat bore 89.
- the control piston 96 is axially displaceably guided in a precisely fitting axial blind hole 103 in a valve insert 104 of the switching valve 32.
- a transverse bore 105 in the valve insert 104 forms the switchable connection between the input and the output of the switching valve 32nd Die Resting and initial position of the control piston 96 is set to closed, ie in the stop at the closed end of the blind bore 103. This is achieved by means of appropriately selected pressure cross-sections on the control piston 96 of the control valve 32.
- 10 likewise shows the creeping gas safety device 64, which discharges to the outside via an obliquely situated connecting bore 107, which builds up creepingly.
- the creeping gas safety 64 is formed according to Fig.10 as a correspondingly designed check valve.
- FIG. 11 shows the second pressure control valve 60 and the high pressure gauge 94 in longitudinal cross section.
- FIG. 11 shows a multi-stage receiving bore 109 for the high-pressure gauge 94 in the fitting block 30.
- the receiving bore 109 opens axially into a connecting bore 111 which connects the high-pressure gauge 94 with the interior of the pressurized gas cylinder 28 combines.
- FIG. 11 furthermore shows a valve insert 102, which together with the housing and valve seat bore 97 forms the second pressure regulating valve 60.
- FIG. 12 and 13 show further cross-sections of the fitting block 30 in the bottom of the compressed gas cylinder 28.
- An outlet bore 113 connects the second pressure control valve 60 to the outside to allow a pressure reduction, as shown in Fig.12. By venting the spring chamber of the pressure regulating valve 60 to the atmosphere, the outlet bore 113 ensures a pressure difference on both sides of the valve piston. From FIG. 13, the second pressure control valve 60, the creeping gas safety device 64 and the bursting disk device 88 can be seen again.
- an outlet bore 115 which is guided transversely to the longitudinal axis of the compressed gas cylinder 28, is shown in the instrument cluster 30.
- the Outlet bore 115 opens on the one hand into the outlet of the second pressure control valve 60 and on the other hand into the expansion space 24 and forms the outlet opening of the compressed gas cylinder 28, ie the compressed gas chamber 26 for controlled pressurization of the expansion space 24.
- FIG. 13 also shows the receiving bores 117, 119 for creeping gas safety device 64 and for the bursting disk device 88.
- a manufacturing method for such a compressed gas cylinder 28 comprises the following steps:
- the method is characterized in that on the one hand the backward extrusion is carried out such that the bottle bottom is designed as a solid, thickened bottom plate 202, ie as a solid body, and on the other hand, the processing of the compressed gas cylinder blank 200 to a compressed gas cylinder at least making a receiving bore for a valve in the solid, thickened bottom plate 202 includes.
- FIG. 14 shows a possible compressed gas cylinder blank 200 produced in this method with a solid, thickened bottom plate 202 as a flake bottom, a bottle jacket 204 connected thereto and a bottle neck 206.
- the solid, thickened base plate 202 forms a cylindrical solid body
- the numbers used in the following in parentheses refer to examples from FIGS. 2 and 6 to 13.
- the production of a receiving bore for a valve during processing of the compressed gas cylinder blank 200 to form a compressed gas cylinder 28 comprises, for example, the same Making at least one housing and valve seat bore (89; 95; 97), and generally at least one communication bore (91; 93) to the interior of the pressurized gas cylinder and at least one outlet bore (115) outwardly in the thickened solid bottom plate 202 - And connecting bores arises from the ursp Roughly massive, thickened bottle bottom 202, a valve block 30, in which the time required for the application of the compressed gas cylinder 28 valves and fittings can be completely installed.
- a variant of a compressed gas cylinder 280, which is generated in this way is shown in Fig. 15.
- receiving bore which perform the dual function of valve seat and valve housing
- receiving bores which merely serve as a receptacle for conventional valves.
- the advantage is lost that the connection sealing surface of a conventional valve with its own housing is unnecessary if the receiving bore also forms the valve seat.
- a compressed gas cylinder 28, 280 is generated, in which a valve block 30 is an integral part of the compressed gas cylinder 28, 280.
- a valve block 30 is an integral part of the compressed gas cylinder 28, 280.
- the expansion of the solid, thickened bottom plate 202 after scannchen preferably at least 50mm and can be 5 to 15 times the wall thickness of the bottle jacket.
- housing and valve seat bores (89, 95, 97) can be accommodated in the solid, thickened bottom plate 202.
- the conduit connections between the valves incorporated later herein are preferably formed by connection bores (99, 101, 107) in the thickened, solid bottom plate 202, which run obliquely with respect to the longitudinal axis of the compressed gas cylinder. This makes it possible to make the processing of the compressed gas cylinder blank 200 as far as possible from the end face of the bottom plate 202.
- the housing and valve seat bores (89, 95, 97) are multi-step bores corresponding to the components to be received.
- the production method preferably further comprises one or more of the following steps: • Attaching a connection in the bottleneck 206, for example, a filling or test port (86), or leak-proof closure of the bottle neck 206;
- valve inserts 98, 102, 104 or fittings (64, 88, 94) with corresponding external threads can be screwed;
- valve inserts 98, 102, 104 and, if necessary, other fittings (64, 88, 94) into the corresponding housing and valve seat bore (s) (89, 95, 97) and / or into the mounting hole (s) ( 109, 117, 119)
- the arrangement of a pressure regulating valve 52 (not shown in FIG. 1) is also made possible.
- the Duckregelventil 52 prevents the unwanted drop from the extinguishing agent pressure in the extinguishing agent space 22; 22 'and thus the drop in the extinguishing agent throughput during the deletion process. This results in the improvement of the coordination between extinguishant pressure and atomizer nozzles 80 usually connected to the outlet of the extinguishing agent container.
- the piston 20; 20 'around the pressure gas chamber 26; 26 ' is arranged axially displaceable, the advantages of a piston extinguishing agent container are maintained in a space-saving manner, and in particular allows the above advantages without additional external pressure vessel.
- the extinguishing agent container 10; 10 ' can be through this design as a compact module together with pressure vessel 28; 28 'and install fittings, remove and replace if necessary, for example, for statutory maintenance purposes.
- the second embodiment according to Figure 2 gives further advantages.
- this extinguishing agent container 10 is designed to save space, since special holders for the compressed gas cylinder 28 omitted, and the valves are largely installed in the built-in pressure cylinder 28 dash block 30. The latter also protects the fittings against damage eg during transport or improper use.
- the storage of the propellant gas is improved with regard to its safety against leaks, in that at least one sealing surface to be sealed between bottle neck and fittings is eliminated.
- each of the fire extinguishing devices 50, 50 ", 50 '" constitutes an automatic protection device operating without external energy which triggers automatically in the event of a fire.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06830847A EP1968715B1 (en) | 2006-01-02 | 2006-12-28 | Fire extinguisher with a container holding a fire-extinguishing substance |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06100013A EP1803488A1 (en) | 2006-01-02 | 2006-01-02 | Fire fighting device with tank and corresponding pressurized gas bottle |
PCT/EP2006/070259 WO2007077195A1 (en) | 2006-01-02 | 2006-12-28 | Fire extinguisher with a container holding a fire-extinguishing substance, and corresponding compressed-gas cylinder |
EP06830847A EP1968715B1 (en) | 2006-01-02 | 2006-12-28 | Fire extinguisher with a container holding a fire-extinguishing substance |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1968715A1 true EP1968715A1 (en) | 2008-09-17 |
EP1968715B1 EP1968715B1 (en) | 2011-07-20 |
Family
ID=36498952
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06100013A Withdrawn EP1803488A1 (en) | 2006-01-02 | 2006-01-02 | Fire fighting device with tank and corresponding pressurized gas bottle |
EP06830847A Not-in-force EP1968715B1 (en) | 2006-01-02 | 2006-12-28 | Fire extinguisher with a container holding a fire-extinguishing substance |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06100013A Withdrawn EP1803488A1 (en) | 2006-01-02 | 2006-01-02 | Fire fighting device with tank and corresponding pressurized gas bottle |
Country Status (8)
Country | Link |
---|---|
US (1) | US8083003B2 (en) |
EP (2) | EP1803488A1 (en) |
CN (1) | CN101351244B (en) |
AT (1) | ATE516855T1 (en) |
CA (1) | CA2638173C (en) |
NO (1) | NO340163B1 (en) |
RU (1) | RU2407570C2 (en) |
WO (1) | WO2007077195A1 (en) |
Families Citing this family (20)
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ES2350884T3 (en) * | 2006-09-21 | 2011-01-27 | Siemens S.A.S. | PROPULSION DEVICE OF AN AGENT CONTAINED IN A CAVITY. |
CN101229417B (en) * | 2007-11-06 | 2011-05-18 | 中汽客汽车零部件(厦门)有限公司 | Puissant automatic fire-smothering unit |
CN101972530B (en) * | 2010-09-03 | 2012-03-07 | 北京工业大学 | Inflatable multipurpose water mist fire extinguisher |
US8869905B2 (en) * | 2010-09-27 | 2014-10-28 | Universal Delivery Devices, Inc. | Actuation mechanism for a fire extinguisher |
CN102949795B (en) * | 2011-08-16 | 2014-11-12 | 西安坚瑞安全应急设备有限责任公司 | Explosion-venting inner cylinder of aerosol extinguishing device |
CN102949790B (en) * | 2011-08-16 | 2015-01-21 | 西安坚瑞安全应急设备有限责任公司 | Aerosol fire-extinguishing device explosion venting method |
US9302128B2 (en) | 2011-10-25 | 2016-04-05 | Kidde Technologies, Inc. | Automatic fire extinguishing system with internal dip tube |
US9308406B2 (en) * | 2011-10-25 | 2016-04-12 | Kidde Technologies, Inc. | Automatic fire extinguishing system having outlet dimensions sized relative to propellant gas pressure |
US9463341B2 (en) | 2011-10-25 | 2016-10-11 | Kidde Technologies, Inc. | N2/CO2 fire extinguishing system propellant gas mixture |
US9192798B2 (en) | 2011-10-25 | 2015-11-24 | Kidde Technologies, Inc. | Automatic fire extinguishing system with gaseous and dry powder fire suppression agents |
DE102012018541B4 (en) * | 2012-09-19 | 2015-08-06 | Dräger Safety AG & Co. KGaA | Compressed gas cylinder holder for a breathing apparatus |
CN102935273B (en) * | 2012-12-06 | 2015-11-04 | 威特龙消防安全集团股份公司 | A kind of non-stored-pressure type piston pressurization automatic fire extinguisher |
RU2598301C1 (en) * | 2015-06-03 | 2016-09-20 | ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ БЮДЖЕТНОЕ УЧРЕЖДЕНИЕ "ВСЕРОССИЙСКИЙ ОРДЕНА "ЗНАК ПОЧЕТА" НАУЧНО-ИССЛЕДОВАТЕЛЬСКИЙ ИНСТИТУТ ПРОТИВОПОЖАРНОЙ ОБОРОНЫ МИНИСТЕРСТВА РОССИЙСКОЙ ФЕДЕРАЦИИ ПО ДЕЛАМ ГРАЖДАНСКОЙ ОБОРОНЫ, ЧРЕЗВЫЧАЙНЫМ СИТУАЦИЯМ И ЛИКВИДАЦИИ ПОСЛЕДСТВИЙ СТИХИЙНЫХ БЕДСТВИЙ" (ФГБУ ВНИИПО МЧС России) | Method of extracting foaming agent solution from fire extinguisher for spacecraft and device for its implementation |
US10603530B2 (en) | 2017-07-16 | 2020-03-31 | Robert S. Thomas, III | Time delayed actuation mechanism for a fire extinguisher |
CN108057463A (en) * | 2017-12-19 | 2018-05-22 | 孟令航 | Laboratory hazardous chemical managing device |
CN109481868B (en) * | 2018-11-22 | 2023-09-22 | 陕西白杨道胜安防科技有限公司 | Gas-producing type automatic fire extinguisher for electric automobile |
DE102018132828A1 (en) | 2018-12-19 | 2020-06-25 | Minimax Gmbh & Co. Kg | Extinguishing agent container |
CN111106276B (en) * | 2018-12-28 | 2021-02-02 | 宁德时代新能源科技股份有限公司 | Spraying system of battery pack and battery pack |
CN115869562A (en) * | 2022-12-22 | 2023-03-31 | 哲弗智能系统(上海)有限公司 | Fire extinguishing device |
CN116212282B (en) * | 2023-03-24 | 2023-12-05 | 江苏日明消防设备股份有限公司 | Intelligent fire extinguisher |
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BE866485A (en) * | 1978-04-27 | 1978-08-14 | Bavaria Feuerlosch Appbau Albe | POWDER EXTINGUISHER WITH PRESSURE AGENT CARTRIDGE LOCATED IN THE CENTER OF THE DISCHARGE TUBE |
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US5845716A (en) * | 1997-10-08 | 1998-12-08 | The United States Of America As Represented By The Secretary Of The Army | Method and apparatus for dispensing liquid with gas |
US6371213B1 (en) * | 2000-02-15 | 2002-04-16 | Autoliv Asp, Inc. | Liquid or foam fire retardant delivery device with pyrotechnic actuation and aeration |
SE0200425L (en) * | 2002-02-14 | 2003-04-15 | Dafo Brand Ab | Extinguishing media and systems with containers |
-
2006
- 2006-01-02 EP EP06100013A patent/EP1803488A1/en not_active Withdrawn
- 2006-12-12 US US12/159,880 patent/US8083003B2/en not_active Expired - Fee Related
- 2006-12-28 AT AT06830847T patent/ATE516855T1/en active
- 2006-12-28 WO PCT/EP2006/070259 patent/WO2007077195A1/en active Application Filing
- 2006-12-28 EP EP06830847A patent/EP1968715B1/en not_active Not-in-force
- 2006-12-28 CN CN2006800503108A patent/CN101351244B/en not_active Expired - Fee Related
- 2006-12-28 RU RU2008131499/12A patent/RU2407570C2/en not_active IP Right Cessation
- 2006-12-28 CA CA2638173A patent/CA2638173C/en not_active Expired - Fee Related
-
2008
- 2008-07-25 NO NO20083302A patent/NO340163B1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2007077195A1 * |
Also Published As
Publication number | Publication date |
---|---|
US8083003B2 (en) | 2011-12-27 |
NO20083302L (en) | 2008-09-19 |
ATE516855T1 (en) | 2011-08-15 |
RU2008131499A (en) | 2010-02-10 |
CA2638173C (en) | 2014-11-18 |
CA2638173A1 (en) | 2007-07-12 |
NO340163B1 (en) | 2017-03-20 |
EP1803488A1 (en) | 2007-07-04 |
WO2007077195A1 (en) | 2007-07-12 |
CN101351244A (en) | 2009-01-21 |
CN101351244B (en) | 2012-09-26 |
EP1968715B1 (en) | 2011-07-20 |
RU2407570C2 (en) | 2010-12-27 |
US20100116515A1 (en) | 2010-05-13 |
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