DE102011053768A1 - Gas fire extinguishing system for ships with dual detection function - Google Patents

Abstract

In this invention is the fire extinguishing device with gas, which detects the fire outbreak in a protected area of ship inside, then promotes the extinguishing measure extinguishing gas such as carbon dioxide in the protection area. The detailed explanation: this device is provided with a smoke detector on the other air outlet for ventilation and Explosioinschutz next to the sampling tube, which directs the inside air of protection area in the ship to smoke sensor unit according to the operation of the ventilation unit. This smoke detector is then additionally connected to the smoke sensor unit, so that the possible fire outbreak in the protected area is detected redundantly, quickly and accurately and then the fire is extinguished even more securely. This device also complies without the additional change in the structure of the existing fire extinguishing system with gas or the installation of the pipes, the ship safety regulation, which is currently applied barely. In order to accomplish the above mentioned technical tasks, this invention has the following features: the sampling tube (2), which according to the operation of the ventilating unit (5) conveys the inside air in the protected area (1) to the smoke sensor unit (4), the high pressure gas container (6) Extinguishing gas, the gas supply line (6a) extended from the high-pressure gas container (6) to the sampling pipe (2), and the three-way valve (8) installed at the junction of the sampling pipe (2) and the gas supply pipe (6a), and the air duct and extinguishing gas channel selectively opens as needed. In this fire extinguishing device for ships (10), each protection zone (1) is equipped with a breather duct (11) with breather (12) and a smoke detector (13) in the breather duct (11) above or below the breather (12). installed, which also works as a fire alarm. The individual smoke detectors (13) are connected to the smoke sensor unit (4) via the cable (13a) and the smoke sensor unit (4) is connected to the fire alarm panel (7a) by the cable (4a).

Description

[Technical part]

This invention is a gas fire extinguishing system for ships with dual detection capability. This system is provided with a smoke detector on the other air outlet duct for ventilation and explosion protection, in addition to the sampling pipe which directs the inside air from the protection area in the ship to the smoke sensor unit in accordance with the operation of the fan unit. This smoke detector is then additionally connected to the smoke sensor unit, so that the possible fire outbreak in the protected area is detected redundantly, quickly and accurately and then the fire is extinguished even more securely. Furthermore, without the additional modification to the structure of the existing fire-extinguishing system with gas or the laying of the pipes, this system complies with the safety rules of the ship, which is still applied at the moment.

[Basic technology]

As a rule, the fire extinguishing systems differ from extinguishing agents in 2 versions:
with liquid or gas. In one embodiment, as extinguishing agent for fire extinguishing liquid such as fire water or liquid chemicals used, while is used as another extinguishing agent gaseous agent such as carbon dioxide or nitrogen for fire extinguishing.

The above-mentioned fire extinguishing system with gas prevents the possibility of soiling or damage when extinguishing a fire with liquid extinguishing agent, the fire extinguishing is even more effective to perform and eventually reduces the workload after the fire extinguishing such as tidying up and restoration of the protection. So that this system will soon find wide accessibility to different areas. Especially with ships, the installation of such a system has become mandatory.

A typical example of the fire extinguishing system with gas in ships was on the 1 shown. The sampling pipes are separated by individual protection areas ( 1 ) within the ship extended with smoke sensor unit ( 4 ) in carbon dioxide space ( 3 ) and to the sampling tubes ( 2 ) in each case a three-way valve is attached. For this purpose, a gas supply line from the high-pressure gas container for extinguishing agent is extended to the three-way valve ( 8th ) of the sampling tube ( 2 ) connected.

The three-way valve ( 8th ) is usually designed as a mechanical ball valve, but if necessary, an automatic pneumatic valve can be used, and then the smoke sensor unit ( 4 ) above via venting channel ( 5a ) to breather unit ( 5 ), with the cable ( 4a ) on fire alarm field ( 7a ) in wheelhouse ( 7 ) and with supply line ( 9 ) and emergency supply line ( 9a ) connected to the not shown power supply and battery (for emergency power supply).

As a result, during normal operation, the inside air in the protected area ( 1 ) according to the operation of the ventilation unit via the sampling tube ( 2 ) to the smoke sensor unit ( 4 ) and the fire alarms, each at the outlet of the individual sampling tubes ( 2 ), then constantly monitors the possible outbreak of fire in the protected area ( 1 ). When the fire breaks out, the smoke sensor unit ( 4 ) a fire outbreak signal to the fire alarm field ( 7a ) in the wheelhouse ( 7 ) and thus indicates in which scope ( 1 ) the fire broke out.

As described above, if the protected area ( 1 ) in which the fire has broken out, and after this has been communicated to the staff stationed in carbon dioxide space, the staff controls the three-way valve ( 8th ) to the corresponding protection area ( 1 ) connected to the sampling tube ( 2 ) at. Then, from the extinguishing gas container ( 6 ) via the gas supply line ( 6a ) and the sampling tube ( 2 ) the extinguishing gas in the protected area ( 1 ), where it burns, is carried in to extinguish the fire.

And when using the automatic and pneumatic valve for the three-way valve ( 8th ) above, the smoke sensor unit ( 4 ) a fire outbreak signal to the fire alarm field ( 7a ) in the wheelhouse ( 7 ) and thus indicates in which scope ( 1 ) the fire has broken out, and the smoke sensor unit ( 4 ) controls the three-way valve ( 8th ) to the corresponding protection area ( 1 ) connected to the sampling tube ( 2 ) at. In this case, the smoke sensor unit ( 4 ) and the three-way valve ( 8th ) are connected by the not shown cable.

But since in the above-mentioned conventional fire extinguishing apparatus with gas ( 10 ) according to the operation of the breather unit ( 5 ) the inside air of individual protection areas ( 1 ) into the smoke sensor unit ( 4 ) is introduced to detect the possible fire outbreak, it will come to recognition problem when the sampling tube ( 2 ), whose diameter is relatively small, is clogged by foreign matter, or if the air passage from the sampling tube has a leak.

In other words, the device is constructed so that the sampling tube ( 2 ) of each protection area ( 1 ) extended to one Smoke sensor unit is connected, whereby the indoor air in each protected area ( 1 ) according to the operation of the breather unit ( 5 ) in smoke sensor unit ( 4 ) and then through the venting channel ( 5a ) is ejected together. Therefore, the operation of the fire extinguishing system with gas ( 10 ) through the fan unit ( 5 ), even if one of the sampling tubes ( 2 ) is clogged.

On the other hand, at a leak on the air duct of the sampling tube ( 2 ) is not the indoor air in the protected area ( 1 ) according to the operation of the breather unit ( 5 ) to the smoke sensor unit ( 4 ), but with high probability the air is outside the protected area ( 1 ) to the smoke sensor unit ( 4 ). In this case, the operation of the fire extinguishing system with gas ( 10 ) through the fan unit ( 5 ) continued, also without recognizing this.

As a result, the smoke sensor unit ( 4 ) it does not immediately and accurately, if at the blockage or leakage of the air channel of the sampling tube ( 2 ) the fire in the protected area ( 1 ) breaks out, so that the measures against the outbreak of fire can not be initiated in time. This can lead to severe fire or explosion. Therefore, the safety requirement for the fire extinguishing system with gas ( 10 ) applied even more aggravated.

To supplement the system problems listed above, the fire extinguishing system with gas ( 10 ) in each protected area ( 1 ) is built-in, is taking into account the narrow space in a Schiffsinn, opaque piping and the high installation costs of the fire extinguishing system with gas ( 10 ) can not be described as expedient and economical, so it is advisable to consider even more economical and effective, but at the same time equipped with improved fire safety guarantee method.

[Content of the invention]

[The problem to be solved]

This invention has been devised to solve the above-mentioned conventional problems and relates to a gas fire extinguishing system for ships with dual detection function. The technical object of this invention is as follows: This system is provided with a smoke detector on the other air outlet duct for ventilation and explosion protection, in addition to the sampling tube which, according to the operation of the fan unit, directs the inside air from the protected area in the ship to the smoke sensor unit. This smoke detector is then additionally connected to the smoke sensor unit, so that the possible fire outbreak in the protected area is detected redundantly, quickly and accurately and then the fire is extinguished even more securely. This device should also meet without the additional change to the structure of the existing fire extinguishing system with gas or the installation of the pipes, the ship safety regulations, which is currently applied bargain.

[Methodology for task accomplishment]

This invention has to cope with the above-mentioned technical tasks on the following equipment: the fire extinguishing system with gas for ships consists of the sampling tube, which promotes the indoor air in the protected area to the smoke sensor unit according to the operation of the ventilation unit, the high-pressure gas tank for extinguishing gas, the gas supply line, the High-pressure gas tank is extended to the sampling pipe is connected, and the three-way valve, which is installed at the junction of the sampling pipe and the gas supply line and selectively opens the air duct and quenching gas channel as needed. Each protection zone mentioned above is equipped with a breather duct with breather and a smoke detector is installed in the breather duct above or below the breather, which also functions as a fire detector. The individual smoke detectors are connected via a cable to the smoke sensor unit and the smoke sensor unit to the fire alarm panel.

Furthermore, the individual cables are connected to the fire detection unit for forwarding and amplifying the signal set by the smoke detector. The fire alarm unit is connected to the smoke sensor unit through the output duct and the deaerator of the individual vent ducts through the control unit with the fire alarm unit. On the outside of the above smoke detector, a box-shaped dust filter is installed.

The smoke detector consists of the detector unit with the integrated sensor field for smoke detection, the inlet and outlet pipes. The inlet and outlet pipes are installed on the lower side and upper side of the detector unit. The detector unit is mounted on the outside of the breather duct, and the inlet and outlet pipes are installed in the breather duct. The interior of the detector unit provides an air line to the inlet and outlet pipe. There are several air inlet holes at the bottom of the inlet tube. The above leads are connected to the sensor panel in the detector unit and a tubular mesh filter is installed in the inlet tube. The front part of the inlet pipe is designed as a screw connection, so that it passes through the opposite wall of the breather duct. At the laid through the breather duct screw of the inlet pipe front part is a Screwed fastening nut, which is thus firmly attached to the breather duct.

Furthermore, the smoke detector is integrated in a housing integrated on the outside of the breather duct. The above lines are routed through the housing and connected to the smoke detector. The housing is connected to the inlet tube extended from the breather duct after the breather and to the outlet tube extended from the breather duct in front of the breather. An air filter is installed in the elongated inlet tube, and in this air filter, the air inlet and outlet are connected to each other in the form of "Y", thus forming a Y filter with a mesh filter incorporated in its inlet. A reservoir in the form of a funnel is attached to the connection between the inlet and outlet tubes and the breather channel. An opening is made to the inlet tube.

OBJECT OF THE INVENTION

In this invention, a fire detection function with a smoke detector is additionally grown on the existing fire extinguisher, so that the possible fire breakout in the protected area is detected redundantly, quickly and accurately, and thus the fire outbreak is detected in the scope of the smoke detector, although the sampling tube is clogged by foreign bodies, or even if the air duct from the sampling tube has a leak.

Consequently, disadvantages of conventional fire extinguishing apparatus with gas are thus covered and even better fire protection measures can be initiated. In addition, neither structural changes to the existing fire extinguisher nor additional piping such as doubling the pipe of the sampling tube are necessary. This allows the reasonable and economical performance of the gas fire extinguisher for ships, which at the same time meets the currently tightened safety regulations.

[Short description of figures]

1 : Piping plan of conventional fire extinguishing device with gas for ships

2 : Piping plan of the gas fire extinguishing device for ships according to an embodiment of the invention

3 : Piping plan of the fire extinguishing device with gas for ships according to the other implementation example of the invention

4 : the enlarged view of the 3 drawn fire detector unit

5 (A) and (B): the clear cross sections of the fan duct structure in the protected area after the application of the invention

6 : the clear cross-section of the other application example of the smoke detector in the fan duct

7 : the enlarged cross-section of the middle section 6

8th : the structure cross-section of the inlet pipe installed in the smoke detector 7

9 : the cross-section of the smoke detector in the other installed state

10 : the enlarged cross section of the smoke detector 9

11 : the cross-section of the smoke detector in the other installed state

12 : the enlarged view of the middle part extract

[Detailed Description of the Invention]

In the following the invention will be explained in detail by means of the figures. The fire extinguishing system with gas for ships with double detection function ( 10 ) is as on 2 represented, analogous to the conventional fire extinguishing device with gas having the following features: the sampling tube ( 2 ), which corresponds to the operation of the breather unit ( 5 ) the inside air in the protected area to the smoke sensor unit ( 4 ), the high-pressure gas container ( 6 ) for extinguishing gas, the gas supply line ( 6a ) from the high-pressure gas container ( 6 ) extended to the sampling tube ( 2 ) and the three-way valve ( 8th ) located at the junction of the sampling tube ( 2 ) and the gas supply line ( 6a ) is installed and selectively opens the air duct and quenching gas channel as needed.

In addition, the three-way valve ( 8th ) in this invention also equipped with the mechanical ball valve, however, it may be provided with the automatic pneumatic valve as needed. The smoke sensor unit ( 4 ) is via venting channel ( 5a ) to breather unit ( 5 ), with the cable ( 4a ) on fire alarm field ( 7a ) and with supply line ( 9 ) and emergency supply line ( 9a ) to the unshown power supply and battery (for emergency power supply) connected installed.

The fire alarm field ( 7a ) is normally, as explained in the technical description, in the wheelhouse ( 7 ), but it is also desirable that the ship's crew immediately recognize the outbreak of the fire, and to the personnel stationed in the ship in the carbon dioxide 3 ) by placing next to the wheelhouse ( 7 ) the fire alarm field ( 7a ) is additionally installed in other areas.

When sampling pipe ( 2 ) the connecting hose ( 2a ) before the installation point of the three-way valve ( 8th ) made of metal, after the installation of soft material such as rubber or plastic, so that the metal connection in the sampling tube ( 2 ) and connecting hose ( 2a ) can be installed and removed, whereby the adjustment, disassembly and exchange work of the smoke sensor unit are carried out simplified.

The main component of the fire extinguishing system with gas ( 10 ) are the breather duct ( 11 ) with deaerator ( 12 ) on the wall of the respective protected area ( 1 ) and the Smoke Detector ( 13 ) as a fire detection sensor in the breather duct ( 11 ) above or below the deaerator ( 12 ). The smoke detector ( 13 ) is over the cable ( 13a ) to the smoke sensor unit ( 4 ) connected.

The breather duct ( 11 ) serves as an air outlet for ventilation and explosion protection. For this purpose, the breather duct, which is already in the protected area ( 1 ) or it can also be used when installing the fire extinguishing system with gas ( 10 ) in the protected area ( 1 ) are additionally installed.

The structure of the breather duct ( 11 ) is as on 5 (A) and (B) shown at one point with the one of the conventional system, ie within the duct for the outlet of the inside air in the protected area (FIG. 1 ) is the deaerator ( 12 ) with the engine ( 12a ) installed. Notwithstanding that a channel cover ( 11a ) to the outlet on the breather duct ( 11 ) is installed at the top.

Is a duct cover ( 11a ) to the outlet on the breather duct ( 11 ), as on the 5 (A) , installed, the smoke detector ( 13 ) preferably to the lower side of the channel cover ( 11a ) to be built in. On the other hand, the smoke detector ( 13 ) to any position within the breather duct ( 11 ), if like on the 5 (B) no duct cover ( 11a ) to the outlet on the breather duct ( 11 ) is installed.

The preferred installation location of the smoke detector ( 13 ) is on the deaerator ( 12 ), but under certain circumstances the smoke alarm ( 13 ) also under the deaerator ( 12 ) to be built in. What is still recommended is that a box-shaped dust filter ( 14 ) on the outside of the smoke detector ( 13 ), so that the smoke detector ( 13 ) remains constantly functional.

The above listed smoke detector ( 13 ) is widely used as a fire detector. There are two variants, a photoelectric model and an ionization model. The photoelectric smoke detector is suitable for smoke detection in slow propagating fire, while the ionization smoke detector can be used more effectively in the detection of fine smoke particles from the rapidly expanding fire.

Therefore, a model of the two on the type and shape of the fire in breather duct ( 11 ), or the two models can be installed together in breather duct ( 11 ) are used. In addition to the above models, any sensor models for smoke and fire detection can be used.

The smoke detector ( 13 ) sets in the detection of smoke particles by fire certain electromotive force as a signal and the signal is transmitted through the cable ( 13a ) to the smoke sensor unit ( 4 ) and then from there through the cable ( 4a ) to the fire alarm field ( 7a ) forwarded. This will change the burning protection area ( 1 ) located. How to monitor the smoke detector ( 13 ) with the existing sampling tube ( 2 ) duplicate the scope of protection ( 1 ) before the outbreak of fire.

The dust filter ( 14 ) should be designed so that it allows the smoke particles through but prevents the passage of foreign bodies such as dust, ie in the form of mesh. Furthermore, the dust filter is intended to prevent the formation of dust on the surface of the smoke detector ( 13 ), so that the sensors from the smoke detector ( 13 ) remains intact. Any filter that meets this condition can be used.

On 2 it is shown that the cable ( 13a ) for the smoke detector ( 13a ) from the breather duct ( 11 ) is connected to the smoke sensor unit, this depiction of the laying of the cable ( 13a ) for the smoke detector ( 13 ), however, to simplify planning complexity. In reality, a cable ( 13a ) for a smoke detector ( 13 ) from the breather duct ( 11 ) extends each protection area individually to a respective smoke sensor unit ( 4 ) connected.

In other words, the breather ducts ( 11 ) in the total of four protection areas ( 1 ) are installed according to the plan so that the cables ( 13a ) for the smoke detector ( 13 ) are laid fourfold. After recording on the schedule, the number of breather channels ( 11 ) in the protected area ( 1 ) between 1 and 4, and in each breather duct ( 11 ) should ideally be a smoke detector ( 13 ), but it is also sufficient if, for each protected area ( 1 ) a smoke detector is used.

As another installation option, the cable ( 13a ) for the smoke detector ( 13 ) of all 4 protected areas ( 1 ) on the plan is extended together as a cable. In that case, the signal from each smoke detector ( 13 ) are set differently, so that it can be seen from the signal value, in which protected area ( 1 ) the fire broke out. For this purpose, preferably a cable interface ( 13b ) instead of an even longer cable ( 13a ) apply.

In the fire extinguishing system with gas ( 10 ) according to another application example of this invention, as on 3 and 4 shown, the individual cables ( 13a ) on the smoke detector ( 13 ) for forwarding and amplifying the signal from the smoke detector ( 13 ) with the fire detector unit ( 15 ) connected. The fire detector unit is connected via the output line ( 17a ) to the smoke sensor unit ( 4 ) and via the control line ( 16a ) to the deaerator ( 12 ) in each breather duct ( 11 ) guided.

The respective cables or lines ( 13a () 16a () 17a ) are connected via the cable connection ( 15a ) leading to the main junction of the fire detector unit ( 15 ), to the fire detector unit ( 15 ) connected. The output line ( 17a ) is from the 2nd relay board ( 17 ) in the fire detector unit ( 15 ) extends with the smoke sensor unit ( 4 ), the control line ( 16a ) from the 1st relay board in the fire detector unit ( 15 ) extended to the breather ( 12 ) connected.

The control line ( 16a ) suppresses the fire in a protected area ( 1 ) the activation of the deaerator ( 12 ) of the breather duct ( 11 ) in the protected area ( 1 ), so that the smoke from the protected area ( 1 ) does not escape and does not spread to the other premises in the ship. Thus, the confusion of panic is contained prematurely.

Rather, the indoor air in the protected area ( 1 ), which in each sampling tube ( 2 ) is introduced via the breather unit ( 5 ) and the venting channel ( 5a ) discharged from the vessel, so that the control of the breather unit ( 5 ) does not need to be interrupted.

The fire detector unit ( 15 ) in the other application example locates the burning protection area with the electrical signal ( 1 ) and suppresses as an electronic control unit the activation of the deaerator ( 12 ) in the protected area ( 1 ). In the fire detector unit ( 15 ) are electronic parts and program for the interpretation of the smoke detector ( 13 ), for forwarding and amplifying the corresponding signal and for suspending the fire outbreak signal and the stop signal of the deaerator ( 12 ) integrated.

Also to the fire detector unit ( 15 ) as to the smoke sensor unit ( 4 ) the supply line ( 9 ) and the emergency supply line ( 9a ) and the control line ( 16a ) is connected to the engine ( 12a ) of the deaerator ( 12 ) and controls the operation of the deaerator ( 12 ). To avoid the complexity of the plan, the connection between the control line ( 16a ) and the deaerator ( 12 ) on 3 not recorded, and for the same reason the connection between the output line ( 17a ) and the smoke sensor unit ( 4 ) simplified as a cable line shown.

On 6 and 7 is another application for the smoke detector ( 13 ) in the breather duct ( 11 ). The smoke detector ( 13 ) consists of the reporting unit ( 19 ) with the integrated sensor field ( 19a ) for smoke detection, the inlet and outlet pipes. The inlet and outlet pipes ( 20 . 21 ) are on the lower side and the upper side of the reporting unit ( 19 ) raised installed.

And the reporting unit ( 19 ) is attached to the outside of the breather duct, and the inlet and outlet pipes ( 20 ) 21 ) are in the breather duct ( 11 ) installed in it. The interior of the reporting unit ( 19 ) provides an air line to the inlet and outlet pipe ( 20 ) 21 ). The above cable ( 13a ) is sent to the sensor field ( 19a ) in the reporting unit ( 19 ) connected.

Accordingly, part of the air passing through the breather duct ( 11 ) discharged air via the inlet pipe ( 20 ) back into the reporting unit ( 19 ) and then via the outlet tube ( 21 ) into the breather duct ( 11 ) forwarded. The sensor field ( 19a ) for smoke detection in the reporting unit ( 19 ) check the smoke in the air and check whether a fire in the protected area ( 1 ) has broken out.

The smoke detector ( 13 ) with the above-mentioned structure can detect the smoke in the wind speed of 0.5 m / s to 20 m / s and is at the breather channel ( 11 ), but can be removed as required, which allows for regular maintenance. Furthermore, the smoke detector ( 13 ) even under the bad condition of the external environment, if on the outside of the reporting unit ( 19 ) an additional outer housing (above class IP66) ( 18 ) is installed.

If in particular a tubular mesh filter ( 24 ) with several filter holes, as on 8th shown in the inlet tube ( 20 ), the penetration of foreign bodies or dust into the reporting unit ( 19 ) with the sensor field ( 19a ), whereby a limited sensor malfunction from the sensor field ( 19a ) is avoided. To the place where the inlet pipe ( 20 ) and the outlet tube ( 21 ) through the breather duct ( 11 ), must the sealing rubber ( 23 ) are used as a further measure of tightness and against noise or vibration.

Another installation condition of the smoke detector ( 13 ) will be on 9 shown. Is there a protection area ( 1 ) below the deck ( 27 ), the breather channel ( 11 ) of the corresponding protection area ( 1 ) to the top of the deck ( 27 ). The smoke detector ( 13 ) on the deaerator ( 12 ) and on the breather duct ( 11 ) below the deck ( 27 ). The plot number 26 indicates a ladder installed to climb below the deck.

Due to the relatively thin sheet thickness of the breather duct ( 11 ), which is separated from the 1 ) under the deck ( 27 ), is additionally between the outer housing ( 18 ) and breather duct ( 11 ) a reinforcing plate with a thickness of 6 mm inserted. The maintenance options and the lifetime during installation of the smoke detector ( 13 ) considered. Furthermore, the front part of the inlet pipe ( 20 ) so that it passes through the opposite wall of the breather duct ( 11 ) runs.

On the 10 this will be shown in more detail. The front part of the inlet pipe ( 20 ) is as a screw ( 20b ) so that it through the opposite wall of the breather duct ( 11 ) runs. To the through the breather duct ( 11 ) threaded connection ( 20b ) of the front part of the inlet pipe ( 20 ) is a fixing nut ( 28 ), which is thus connected to the breather duct ( 11 ) is fixed.

On 9 and 10 is shown so that the air inlet holes ( 20a ) and the mesh filter ( 24 ) only to half of the total length of the inlet tube ( 20 ) seem appropriate. However, the air inlet holes ( 20a ) and the mesh filter ( 24 ) as needed to the total length of the inlet pipe ( 20 ) except for the screw connection ( 20b ) are grown.

On the threaded connection routed through the breather channel ( 20b ), the air inlet holes ( 20a ) and the mesh filter ( 24 ) and with the screw ( 20b ) provided front part of the inlet pipe ( 20 ) is of course sealed so that the inside air in the breather duct ( 11 ) does not escape to the outside. To the place where the inlet pipe ( 20 ) through the breather duct ( 11 ), as required, the sealing rubber ( 23 ) are used as a measure of tightness and against noise or vibration.

If the front part of the inlet pipe ( 20 ), as described above, through the breather channel ( 11 ) installed screwed with the fastening nut, the smoke detector ( 13 ) to the breather duct ( 11 ) grown even firmer, so that the inlet pipe ( 20 ) does not dissolve and this fixed connection also offers even more effective installation structure against any vibration and noise. The installation structure can also be like on 6 when installing the smoke detector ( 13 ) on the deaerator ( 12 ) are used.

On 11 and 12 is the optimal installation condition of the smoke detector ( 13 ) in this invention. The smoke detector ( 13 ) is in the outer housing ( 18 ) integrated on the outside of the breather duct ( 11 ) and the cable ( 13a ) is replaced by the outer housing ( 18 ) and with the smoke detector ( 13 ) connected. The outer casing ( 18 ) is connected to the breather channel ( 11 ) elongated inlet tube ( 29 ) after the deaerator ( 12 ) and with the breather duct ( 11 ) extended outlet tube ( 30 ) in front of the deaerator ( 12 ) and thus forms the Umwälzungsweg of sample air.

The inlet tube ( 29 ) and outlet tube ( 30 ) may be either metal or hard plastic or rubber or soft plastic tubing. It is also possible that the end part of the inlet tube ( 29 ) and outlet tube ( 30 ) connected to the breather duct ( 11 ) and outer housing ( 18 ), is designed as a pipe made of metal or hard plastic. For the remaining part then hose made of rubber or soft plastic can be used. The outer casing ( 18 ) should preferably be constructed as a closed box made of metal or plastic.

In addition, the inlet tube ( 29 ) an air filter ( 31 ) built-in. In this air filter ( 31 ) are the air intake ( 31a ) and outlet ( 31b ) in the form of "Y", and thus forms a Y-filter, in whose inlet ( 31a ) a mesh filter ( 34 ) is installed.

On the surface of the mesh filter ( 34 ) there are small filter holes at a close distance and the mesh filter ( 34 ) with filter mounting screw ( 34a ) in the air intake ( 31a ) removable screwed. Such Y filter variant is very common air filter design.

If this Y-filter as an air filter ( 31 ), the foreign bodies in the air coming from the breather duct ( 11 ) to the smoke detector ( 13 ), even better removed by circulation system. Also, this use of the Y-filter offers a further advantage that the filter mounting screw ( 34a ) with the mesh filter ( 34 ) can be easily removed, so that the cleaning is much easier.

At the connection between the inlet and outlet tubes ( 29 . 30 ) and breather duct ( 11 ), on the other hand, a memory ( 32 ) in the form of a funnel, which supports the circulation of the air. To the inlet tube ( 29 ) after the air filter ( 31 ), an opening ( 33 ) appropriate.

The memory ( 32 ) serves for even faster and more efficient air circulation via the smoke detector ( 13 ), the air from the high pressure area in the breather duct ( 11 ) via the inlet tube ( 29 ) and from the outlet tube ( 30 ) by low pressure area in the breather duct ( 11 ) on the lower side of the deaerator ( 12 ) is omitted. the memory ( 32 ) can be connected to the inlet tube ( 29 ) to be built in.

The opening ( 33 ) is installed to increase the airflow velocity. Normally, it is incorporated in the form of a narrow necked reversing nozzle. Alternatively to the opening ( 33 ), a throttle valve can be installed, so that the air flow is regulated even more active.

The memory ( 32 ) and the air filter ( 31 ) and the end part of the inlet tube ( 29 ) and outlet tube ( 30 ) should be equipped with a flange, which is to be mounted with screw and nut. This structure proves advantageous especially when cleaning the air filter ( 31 ) or when repairing the system, as the parts can be installed or removed as needed.

Is the smoke detector ( 13 ) installed in this way, then the air flow to the smoke detector ( 13 ) on the outside of the breather duct ( 11 ) due to the relatively large pressure difference between the high-pressure region (outlet pressure 54.6 mmHg) after the deaerator ( 12 ) (to the breather at the top of the plan) and the low pressure area (inlet pressure 44.4 mmHg) in front of the breather ( 12 ) (to the breather at the bottom of the plan).

As a result, the smoke detector ( 13 ) even more precisely, whether the outbreak of fire in the protected area ( 1 ) takes place, which leads to rapid fire extinguishing. In addition, the smoke detector ( 13 ) in the conditions such as the use of a large fan or the wind speed over 20 m / s, detect the fire. All components, the smoke detector ( 13 ) and air filters ( 31 ) are placed on the outside of the breather duct ( 11 ) attached a kind of line connected to each other, so that the cleaning of the air filter ( 31 ) and the repair of the plant have become even easier.

In the fire extinguishing system with gas ( 10 ) According to this invention is the conventional fire extinguishing device nor the fire detection function by the smoke detector ( 13 ) added. This ensures that the possible outbreak of fire in the protected area ( 1 ) is detected redundantly, quickly and accurately. Also, the smoke detector ( 13 ) determines whether the possible outbreak of fire in the protected area ( 1 ), even though the sampling tube ( 2 ) is obstructed by foreign bodies or trapped on the air channel of the sampling tube ( 2 ) leak.

Thus, the conventional fire extinguishing device is functionally supplemented, and thereby still improved fire protection measure can be initiated. In addition, it is no longer necessary to change the structure of conventional fire extinguishing or even additional piping such as doubling the pipe of the sampling tube ( 2 ). This allows the reasonable and economical performance of the gas fire extinguisher for ships, which at the same time meets the currently tightened safety regulations.

LIST OF REFERENCE NUMBERS

1

the scope

2

sampling tube

2a

connecting hose

3

carbon dioxide room

4

Smoke sensor unit

4a, 13a

electric wire

5

Entlüfterseinheit

5a

vent channel

6

Extinguishing gas containers

6a

Gas supply line

7

wheelhouse

7a

Fire alarm box

8th

Three-way valve

9

supply line

9a

Notversorgungsleitung

10

Fire extinguishing system with gas

11

Entlüfterskanal

11a

channel cover

12

ventilator

12a

engine

13

smoke detector

13b

Cable interface

14

dust filter

15

Fire alarm unit

15a

cable

16

1. relay board

16a

Kontolleitung

17

2. Relay board

17a

output line

18

outer casing

19

detector unit

19a

sensor field

20

inlet pipe

20a

Air inlet holes

20b

screw

21

outlet pipe

22

bracket

23

Sealing rubber

24, 34

mesh filter

25

Support panel

26

ladder

27

deck

28

fixing nut

29

inlet tube

30

outlet pipe

31

air filter

31a

air intake

31b

air outlet

32

Storage

33

opening

34a

Filter mounting screw

Claims (12)

Gas fire extinguishing system for ships with dual detection function with the following characteristics: In the fire extinguishing system with gas for ships ( 10 ) with the sampling tube ( 2 ), which corresponds to the operation of the breather unit ( 5 ) the inside air in the protected area ( 1 ) to the smoke sensor unit ( 4 ), the high pressure gas container ( 6 ) for extinguishing gas, the gas supply line ( 6a ) from the high-pressure gas container ( 6 ) extended to the sampling tube ( 2 ) and the three-way valve ( 8th ) located at the junction of the sampling tube ( 2 ) and the gas supply line ( 6a ) and selectively opens the air channel and quench gas channel as needed, each of the above-mentioned protection zones ( 1 ) with a breather duct ( 11 ) with deaerator ( 12 ) and in the breather duct ( 11 ) above or below the deaerator ( 12 ) is a smoke detector ( 13 ), which also works as a fire detector. The individual smoke detectors ( 13 ) are connected via a cable ( 13a ) on the smoke sensor unit ( 4 ) and the smoke sensor unit ( 4 ) is passed through the cable ( 4a ) with the fire alarm field ( 7a ) connected. Gas extinguishing system for ships with double detection function with the following features: According to claim 1, the individual with the smoke detector ( 13 ) connected cables ( 13a ) for forwarding and amplifying the smoke detector ( 13 ) signal to the fire detector unit ( 15 ) connected. The fire detector unit ( 15 ) is passed through the output line ( 17a ) with the smoke sensor unit ( 4 ) connected. Gas fire extinguishing system for ships with double detection function, having the following features: According to claim 2, the deaerators ( 12 ) of the individual breather ducts ( 11 ) through the control line ( 16a ) with the fire detector unit ( 15 ) connected. Gas fire extinguishing system for ships with double detection function with the following features: According to claim 1 or 3, on the outside of the smoke detector ( 13 ) the box-shaped dust filter ( 14 ) built-in. Gas fire extinguishing system for ships with double detection function with the following features: According to claim 1 or 3, the smoke detector ( 13 ) from the reporting unit ( 19 ) with the integrated sensor field ( 19a ) to smoke, the inlet pipe ( 20 ) and the outlet pipe ( 21 ). The inlet pipe ( 20 ) and the outlet tube ( 21 ) are each raised raised on the lower side and upper side of the detector unit. The reporting unit ( 19 ) is connected to the outside of the breather duct ( 11 ), and the inlet pipe ( 20 ) and the outlet tube ( 21 ) are fed into the breather duct ( 11 ) installed in it. The interior of the reporting unit ( 19 ) provides an air line to the inlet pipe ( 20 ) and to the outlet tube ( 21 ). At the inlet pipe ( 20 ) Below are several air inlet holes ( 20a ). The cables ( 13a ) are sent to the sensor field ( 19a ) in the reporting unit ( 19 ) connected Gas fire extinguishing system for ships with double detection function with the following features: According to claim 5, in the inlet pipe ( 20 ) is a tubular mesh filter ( 24 ) built-in. Gas fire extinguishing system for ships with double detection function with the following features: According to claim 6, the front part of the inlet pipe is ( 20 ) from the smoke detector ( 13 ) as a screw connection ( 20b ) so that it through the opposite wall of the breather duct ( 11 ) runs. To the through the breather duct ( 11 ) threaded connection ( 20b ) of the front part of the inlet pipe ( 20 ) is a fastening nut ( 28 ), which is thus connected to the breather duct ( 11 ) is fixed. Gas fire extinguishing system for ships with double detection function with the following features: According to claim 1 or 3, the smoke detector ( 13 ) in the outer housing ( 18 ) integrated to the outside of the breather duct ( 11 ) grown. The cables ( 13a ) are replaced by the outer housing ( 18 ) and with the smoke detector ( 13 ) connected. The outer casing ( 18 ) is connected to the breather channel ( 11 ) elongated inlet tube ( 29 ) after the deaerator ( 12 ) and with the breather duct ( 11 ) extended outlet tube ( 30 ) in front of the deaerator ( 12 ) connected. Gas fire extinguishing system for ships with double detection function, having the following features: According to claim 8, the inlet pipe ( 29 ) the air filter ( 31 ) built-in. Gas fire extinguishing system for ships with double detection function with the following features: According to claim 9, in this air filter ( 31 ) the air intake ( 31a ) and the air outlet ( 31b ) in the form of "Y", and thus forms a Y-filter, in whose inlet ( 31a ) of the mesh filter ( 34 ) is installed. Gas extinguishing system for ships with double detection function, having the following features: According to claim 9, at the connection between the inlet and outlet pipes ( 29 ) 30 ) and breather duct ( 11 ) the memory ( 32 ) in the form of a funnel. Gas fire extinguishing system for ships with double detection function, having the following features: According to claim 9 or 11, the intake pipe ( 29 ) the opening ( 33 ) appropriate.

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