DE2813219A1 - Electrical equipment fire protection appts. - uses bursting device to release sliding bolt to free carbon di:oxide bottle closure pin - Google Patents

Abstract

The protection system for electrical fittings in the event of a fire in a building or factory uses a carbon dioxide bottle or cartridge (7) with a pin (2) at its outlet which is released by a suitable monitoring device. The release mechanism includes a locking bolt (18) at right angles to the pin, with its rounded nose (19) held in contact with a groove (20) around the bolt by a spring (21). This forms part of a bursting device release mechanism which uses a galss ball (24) as the bursting member, fractured by heat. This ball contains a filling of material with a high coefficient of expansion when heated. This is in line with pneumatically operated piston and cylinder unit with a further spring loaded bolt with a pointed tip.

Description

R. t G. SchmOle Metallwerke, 5750 Menden

Release valve for carbon dioxide tank or the like », especially for the purposes of preventive fire protection

The invention relates to a release valve for carbon dioxide containers or the like according to the preamble of claim 1.

As part of preventive fire protection, smoke and heat extraction systems are often required for flat industrial roofs. This system ensures that in the event of a fire smoke gases and heat escape into the open through roof openings can. When domed skylights are present, they are generally bent into the smoke and heat extraction system. To this For this purpose, the skylights are often provided with pneumatic cylinders that are actuated by gas, preferably COg, whereby the gas is stored in a gas cylinder or cartridge. The smoke and heat extraction system is triggered by thermal Release devices. These thermal release devices have a spring-loaded opening bolt, the is blocked by a thermal fuse. If a critical temperature is reached or exceeded at the release valve, the thermal fuse releases the opening bolt and this is pressed into the gas container by the spring tension. The pressurized gas escapes and the fire protection system speaks to. The disadvantage of the known release valve is that the thermal fuse is no other release than allowed over temperature. However, since a release valve is usually not installed where the If the highest temperature prevails, it often happens that the fire causes more damage without the trigger temperature

009839/0608

is reached at the release valve.

It is accordingly an object of the invention to provide _s a release valve, in addition to the known thermal tripping another externally controlled release, in particular by pneumatic or electrical means, allowed, and is further designed so that its setting, testing and maintenance particularly easy to carry and safe , so that the safety of the fire protection system equipped with the valve is significantly increased overall.

This object is achieved by the features listed in the characterizing part of claim 1.

Due to the suitably also under spring tension and preferably at 90 ° to the direction of movement of the Opening pin arranged locking bolt is the actual release of the opening pin for the gas container from the opening pin housing taken out and advantageously via a separate bolt in a laterally arranged on the opening pin housing, freely configurable housing in which a bursting body release device is available, relocated. By this measure, it is advantageously possible to use the bursting body as a thermal To design fuse that can also be triggered in other ways can and a simple locking option for the opening bolt to be provided.

In an embodiment of the invention it is provided that the bursting body release device is caused by external action and / or heat easily destructible bursting body, preferably a glass body with a filling with a high coefficient of thermal expansion, having. As a result, a reliably acting release system is available, which is both thermal and can be easily removed by mechanical action.

V: - B-0 9339 / G60S

There is an advantageous embodiment of the invention in that the bursting body has a pneumatically actuatable thrust piston unit and / or a thrust piston unit an upstream, preferably electrically ignitable explosive body and / or a manual release unit, which is preferably acts against a spring, is assigned, wherein all units have a bursting body destruction pin. Through this in addition Units arranged on the bursting body provide further triggering options for the valve. Depending on the If required, the units can be attached individually or together. In particular because of the two remote-controllable ones A significant improvement is achieved because the thrust piston units are now triggered even further away from the source of the fire is possible. In this way, smoke and fire gases can be extracted specifically from the source of the fire and from the building.

Another advantageous feature of the invention is characterized in that the bursting body is in the conical end a central bore of an adjusting screw is mounted, the filling attachment of the preferably designed as a glass ball Bursting body engages in the central bore. This storage of the glass ball is particularly simple and cheap because it is kept immovable with respect to the locking pin axis.

According to the invention it is further provided that the locking bolt, the pneumatically actuated push piston unit, the push piston unit with upstream explosive body and the manual release unit offset from each other by 90 ° are assigned to the bursting body. This type of arrangement separates the individual units particularly favorable to each other and allows simple and easy assembly and adjustment of the different units. It also turns out to be a good one

28-321

Handleability of the adjusting screw allows _s in which is supported the bursting body.

According to the invention it is advantageous that the opening bolt has a locking pin engagement groove of preferably elliptical shape. This will make the locking pin engagement Triggering is particularly favorable in terms of its design “because there is an axial movement of the opening bolt leads to a displacement of the locking bolt. This is particularly the case when the end of the intervention of the locking pin has the shape of a hemisphere. Even other cross-sectional shapes of the groove or of the engagement end are conceivable.

In a further embodiment of the invention provides that the opening ^ bolt at its the opening pin opposite end a locking _s preferably a detachable disc, comprising. By Ärretierungselement it is possible to lock the bolt hole for maintenance with the spring biased advantageously _s. The maintenance _s can be carried out of the gas container without the valve must be disassembled so without the risk of unintentional opening. This facilitates and ensures the maintenance and monitoring of the release valve considerably.

An advantageous feature of the invention is that the housing of the release fitting has a gas cartridge or a gas container at one end and a locking sleeve at the other end. This division results in particularly favorable structural design options for locking. Furthermore, this arrangement ₉ allows the clamping nut of the opening pin springs to be secured in a relatively simple manner against unintentional loosening.

909 839 / OSO '

2313219

Finally, according to the invention, it is also advantageous that the locking sleeve, in particular by means of an adjusting thread, is designed to be adjustable in the axial direction and has an inner disk with a central bore, which between the locking element and the housing or the spring tensioning nut is arranged by opening pin springs. Through this design the locking sleeve can be adjusted by simply turning in the axial direction, its path through the Inner pane is limited. Unintentional twisting of the locking sleeve is not possible, it can only be done after loosening it the locking disc must be removed.

The release valve can be used anywhere in fire protection both in preventive and direct fire protection. Due to their design with multiple release mechanisms it offers a previously unattainable level of security and controllability. This is also particularly advantageous Locking system of the opening bolt, which is a particularly simple, allows safe setting, checking and maintenance. This also increases the safety of a fire protection system in which the release valves according to the invention are used, increases.

The invention is illustrated in more detail below with reference to an embodiment shown in the drawings. Show it:

Pig. I make a vertical central longitudinal section a valve body and

2 shows a plan view of the fitting housing of Fig. 1, partly in horizontal cross-section »

909839 / Q60S

In the figures, 1 is the housing of a release valve denotes: in which an axially movable opening pin 2 is arranged. The opening bolt 2 is via a support ring 3 under the influence of coaxially nested Helical compression springs 4, 5.

At the actuation end of the opening bolt 2 there is an opening pin 6 which, when triggered, a carbonic acid cartridge 7, which is embedded in a screw housing 8, opens. At the end of the opening curve opposite the opening pin τ a locking element 9 is arranged in the form of a disk.

; Around the locking element 9 and around the helical compression springs 4, 5 and a spring clamping nut accommodating this, a locking sleeve 11 is arranged which has an inner disk 12 having a central bore 13. The locking sleeve is axially adjustable by turning in the thread 14. In the area this thread, the housing 1 is provided with a further internal thread 15 into which the clamping nut 10 for the Helical compression springs 4, 5 is screwed in. The locking sleeve is axial 11 completed by a cap 16 that can be screwed in is designed and can be unscrewed for assembly or disassembly of the locking element 9. While that Valve housing and the other parts stressed by forces are preferably made of brass, the cap consists made of plastic, preferably with safety coloring.

; In the approximately middle length section, the housing a; at right angles protruding approach 17, in which a locking pin 18 pit, ^ Ber55Ugiirtif the opening bolt 2 can be moved transversely is stored. The engagement end 19 of the locking pin is as Hemisphere. The hemisphere engages in an approximately elliptical

table groove 20 of the opening bolt 2 and thereby locks the opening bolt.

The locking pin 18 is under the tension of a spring 21 which is arranged between a piston 22 of the locking pin and the housing 1. At the engaging end 19 opposite _s in diameter tapered end 23 of the locking bolt rests on a bursting body 24 which is formed as a glass ball with filling socket 25th The glass ball and the filling attachment are held and received by an adjusting screw 26 which is screwed into the attachment 17 of the fitting housing 1 by means of a thread 27 and has the same axial direction as the locking bolt 18. The filling attachment 25 engages in a bore 28 of the adjusting screw 26, the glass ball 24 being centered in the conical end section 29 of the bore.

In the area of the bursting body 24 (see also FIG. 2) the attachment 17 attachment stubs 30, 31 and 32 and an opening 33 the inclusion of triggering devices 34, 35, which will be described in more detail below, or the visual inspection of the bursting body to serve.

Furthermore, in Fig. 2, the laterally arranged on the fitting housing 1 connecting pieces 36 and 37 for the pneumatic working cylinder leading connecting pieces. The connecting pieces are directly with a space 38 in the Opening pin part of the housing 1 in connection (see also FIG. 1), into which the gas flows from the gas cartridge which is opened by the opening pin 6 in the event of activation.

The supported in the approach 17 or screwed to this Parts thus together form a bursting body release device 39 »depending on the operational problem can be varied. So the triggering devices 34 and

- li -

35 can be used together or individually. It is also possible to connect _s a manually operated unit. The unused connections can be closed with plugs.

The trigger unit 34 consists of a connector in the attachment 32 screw-in housing 40 with a piston 42 displaceable against a spring 41. Its piston rod 43 is in the Housing neck 44 out. A tapering destructive pin 45 is arranged on the end face of the piston rod. The case is closed by a screw-on cover 46. Of the The cover has a connecting piece 47 to which a line leading to an explosive device can be connected. The explosive device is ignitable by electrical Kontaktgäbe, whereby the piston 42 is acted upon and displaced, so that at the end of the displacement path, the bolt 45 destroys the glass ball 24.

The trigger unit 35 acts as a purely pneumatic cylinder. It also consists of a housing 48 which can be screwed into the connection piece 31 via the housing neck 49. A piston 50 is guided in the housing, the piston rod 51 of which has a destructive tip 52 at the end. The piston is held in the position shown by a spring 53 ί · ^η . The piston is actuated pneumatically via a connection 54 in the cover 55 screwed onto the housing.

The operation of the release valve is as follows:

Under the influence of heat or by the action the bursting body destruction bolts 45, 52, which are triggered pneumatically, electrically or mechanically, the bursting body 24 is destroyed. The locking pin 18 is then shifted by the force of the tensioned spring 21 and pulls its hemispherical one in the process Engagement send-19 ″ out of the groove 20 of the opening bolt 2. The opening bolt is now no longer locally locked and can

is now under the influence of the pretensioned springs 4, 5 in Move towards the gas cartridge 7. The opening pin 6cfcingt am End of the displacement path into the cartridge, so that the gas escapes and via the space 38 in communication Nozzle 36 and 37 reaches the working cylinders, etc.

A prerequisite for a movement of the opening bolt 2 is the position of the locking sleeve shown in FIG. 1 11, which leaves the locking element 9 unlocked.

For maintenance purposes, the sleeve 11 is screwed up on the thread 14 until the inner disk 12 rests against the locking disk 9. In this position the springs 4, 5 are relaxed. The locking pin 18 can thus be safely disengaged from the opening pin 2. In the contact position of the locking sleeve 11, the bursting body 24 can therefore be serviced safely, as can the release devices in the nozzles 30, 3I ₃ and 32. Even a trial actuation of the release devices with destruction of the bursting body is possible without triggering the fire protection system *

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Claims (1)

J .-— D (PL ..- IMG. WiLLEi - BIPL-PHYS. DR. JUR. REUTERS - /., ".; i ~ - .. ': - ::; -; - ^ -patent attorneys AKTEN.NR;. & 29 / 27l94 - - "" ■ ..; "4e30BOCHUM.23.3- ¹⁹⁷⁸ XR / H - .- ■ - ■ Post office box 1O 24 5O "Ihr-Zeicrjön; \ -.-" _ _ Fern call O234- / 519 57 ! ". ; - \ " ■ - ■■ "■ -." .. "---.- Sergstrasse 159 -.-. . Telegr .: Stuhlmann patent "'-;V; - Claims: 1. Trigger valve for carbon dioxide containers or the like, in particular for purposes of preventive fire protection, which has a gas container opening pin at the end of a spring-loaded releasable opening bolt which is axially movable in a housing and which opens a pressurized gas container when triggered, thereby opening a gas container η ζ e ic h η et that a transversely directed locking pin (18), _{which is preferably under spring tension, engages the opening bolt (2) s} forms part of a bursting body release device C39). 2. release valve according to claim 1, characterized ge k e, η η ζ ei c h η e t that the bursting body release device (39) one by external influence and / or heat easily destructible bursting body (24), preferably a glass body with a filling with a high coefficient of thermal expansion, has ^ 3. Trip fitting according to claim 1 or .2, since you rch ge ken η ζ eich η et _s that the bursting body (24) is assigned a pneumatically actuatable thrust piston unit (35 _s 5Q) with a bursting body destruction pin (52). 4. release valve according to claim 1 or 2, d a - d μ-r ve h ". g:", e "know ζ ei c h η e t that the bursting body (24) a push piston unit (34y 42) with an upstream » preferably assigned electrically ignitable explosive body is »'which has a bursting body destruction bolt (45). -z- 5 * release valve according to claim 1 or 2, characterized in that the bursting body (2 * f) is assigned a manual release unit which preferably acts against a spring. 6. Release valve according to claim 1 or one of the following, characterized in that the bursting body (24) is mounted in the conical end (29) of a central bore (28) of an adjusting screw (26), the filling attachment (25) preferably as a glass ball trained bursting body (2 ¹ I) engages in the central bore (28). J. Release valve according to claim 1 to 5 or 6, characterized in that the locking bolt (18), the pneumatically actuated push piston unit (35), the push piston unit (34) with upstream explosive body and the manual release unit are each offset from one another by 90 ° to the bursting body (24 ) assigned. 8. release fitting according to claim 1, characterized in that the opening pin (2) has a Has locking boltexngrxffsnut (20) of preferably elliptical shape. 9. release valve according to one of claims 1 or 8, characterized in that the opening pin (2) on its opposite to the opening pin (6) End of a locking element (9), preferably a detachable one Has disc *. IQ. Release fitting according to one of Claims 1 to 9, characterized in that its housing (1) at one end a gas cartridge (7) or a gas container and a locking sleeve (Ii) at the other end. 90S839 / 06ÖS , 11..Auslösermatur according to claim IQ ₈ thereby gek en η ζ ei ch η et _B that the locking sleeve (11) is designed to be adjustable in the axial direction in particular by an adjusting thread (14) ο 12. Trigger fitting according to claim 10 or 11, characterized in ₉ that the locking sleeve (11) has an inner disc (12) with a central bore (13) between the locking element (9) and the housing (Ί) or the Pederspannnut (10) of Opening pin springs (4, 5) is arranged. 909839 / 060S