RU85828U1 - GAS EXTINGUISHING AUTOMATIC DISTRIBUTION DEVICE - Google Patents

Abstract

1. Distribution device of an automatic gas fire extinguishing installation, comprising a supporting body, a shut-off element connected on one side to a line supplying gaseous fire extinguishing substances (GOTV) from the GOTV source, and on the other hand, to a GOTV supply line to the protected room, a pneumatic drive of the shut-off body (hereinafter referred to as a pneumatic actuator), including a cylinder, a piston, a rod connected to a movable working element of a shut-off element, a stimulating source of compressed gas, the main trigger of an electric pneumatic actuator of an agnitic type (hereinafter EPU), including a housing and an electromagnet, a backup manual start device (hereinafter URP) of the pneumatic actuator, the handle of which is equipped with a safety check against unauthorized activation, and the cavity of the stimulating source of compressed gas is communicated by a channel with a working cavity above the pneumatic actuator piston through a normally closed first valve EPU, which is connected to the armature of the EPU electromagnet, characterized in that the shut-off element is placed in the bearing housing and is made in the form of a spring-loaded relative to the bottom the housing of the mushroom-shaped flange placed coaxially with the pneumatic actuator piston, rigidly connected to the pneumatic actuator rod and made interacting with the annular saddle of the internal cavity of the bearing body through an annular shoulder, the stimulated source of compressed gas is made in the form of a pneumatic chamber consisting of a cylinder with a bottom and a cover located coaxially to the bearing body and rigidly connected to it, the outlet cavity of the first EPA valve is communicated with the working cavity above the pneumatic actuator piston through the outlet in the core wall

Description

The inventive utility model relates to the field of fire fighting equipment, and more specifically to automatic gas fire extinguishing installations.

Currently, various automatic gas fire extinguishing systems are widely used, in which gaseous extinguishing agents (GOTV) are used, for example, liquefied gases: HFC 23, HFC 125HP, HFC 227a, HFC 318C, HFC 3110, sulfur hexafluoride, as well as compressed gases: nitrogen , argon gas, gas composition "Inergen", etc.

The composition of each such installation includes various units, among which, on the output line, when protecting various rooms with one installation, to ensure the supply of GOTV in only one direction, i.e. only in the room where the fire hazard was created, special switchgears were installed in front of each protected room.

Various designs of switchgears for automatic gas fire extinguishing systems are known.

It is known, for example, a switchgear type RU MEZ (see the nomenclature of the company ZAO MEZ SPETSAVTOMATIKA, Moscow, 2004, p. 42-43), in which a complex and expensive combination of a pneumatic-manual starter with an electric pyrotechnic starter is used as a starting device with initiating elements-gas generators (squibs).

Such a device, although it allows providing GOTV supply from an automatic gas fire extinguishing installation in the required direction, however, the squib cartridge allows it to be used only once and in case of a sequential fire situation, after a short period of time, this automatic unit will not work and it will be necessary to switch to manual control .

The switchgear of RU-22-400 RU model is also known (see the Inergen catalog - "Fire extinguishing systems of the Garant NPF, www.npfgarant.ru/home/catalog/apt_2/gas_2/innerros/1237, 2008), in which as a starting device, a starting cylinder is used, located separately from the fire extinguishing system and connected to the locking and starting device with two starting devices - manual and electro-pneumatic.

Such a device, although it makes it possible to supply GOTV from an automatic gas fire extinguishing installation in the required direction, however, such a device is cumbersome (has large weight and size characteristics) due to the need to use a complex expensive cylinder, disposing it separately from the installation.

Closest to the claimed solution on the technical nature and the achieved effect of its use is the well-known switchgear of an automatic gas fire extinguishing installation according to the RF patent for invention N 2321438, А62С 37/38, F16K 31/00, 2006.

This switchgear contains:

- a locking element, made in the form of a separately located ball valve connected on one side (at the entrance) to the mains supplying the GOTV from the GOTV source, and on the other hand (at the exit), to the mains for supplying the GOTV to the protected room,

- a pneumatic actuator of a locking member (hereinafter referred to as a pneumatic actuator), including a cylinder (acting as a carrier, the main body of the product), a piston, a rod connected to a movable working (locking) element of a locking member - a ball valve, and an induction source of compressed gas made in the form of a separate from the pneumatic actuator of the stimulating gas cylinder,

- the main trigger device of the electromagnetic (solenoid) type pneumatic actuator (hereinafter the electromagnetic trigger or EPU), including a housing with an electromagnet located in it, located above the pneumatic actuator in such a way that the axis of the armature of the EPU electromagnet is parallel to the axis of the pneumatic actuator pneumatic cylinder,

- a backup manual start device (hereinafter referred to as URP) of the pneumatic actuator, the handle of which is kinematically connected to the armature of the EPU electromagnet by means of a rod, a sleeve and a pin and is equipped with a safety check (ring) against unauthorized switching on,

- the cavity of the stimulating source of compressed gas (stimulating gas cylinder) is connected to the cavity above the piston of the pneumatic actuator through a normally closed EPU valve, the stem of which is connected to the armature of the EPU electromagnet.

Such a device, although it makes it possible to provide GOTV supply from an automatic gas fire extinguishing installation in the required direction, however, part of its design features limits its scope, since it is cumbersome due to the fact that:

1. this device has a relatively large weight and size characteristics due to separately located complex blocks and elements, for example, such as a stimulating launch cylinder with a system of pipelines and channels, as well as a ball valve with long rods for connecting it to the rod of the pneumatic cylinder;

2. the installation of such a device is difficult and requires quite a lot of time and labor;

3. additional adjustment of different blocks located in different places is required, especially a massive launch canister (with increased requirements for its safe functioning), taken outside the main body of the product, and precise adjustment of rods for connecting a ball valve is also required;

4. the removal of a massive launch balloon beyond the main body of the product increases the risk of operation of the installation as a whole.

The task to which the claimed invention is directed is to expand the arsenal of existing technical means of a certain purpose, associated with increasing the efficiency of ensuring the readiness of fire-fighting equipment for immediate use while ensuring the maximum possible fire-fighting effect during its use by reducing the risk of damage to the fire-fighting installation during its operation and guaranteed supply of GOTV in portions in cases of repeated ignition protecting direct object.

This problem is solved using the technical result from the use of the proposed utility model, which consists in a significant increase in the reliability of the switchgear of the automatic installation of gas fire extinguishing due to the simplification of its design, in reducing the overall dimensions by reducing the product elements that extend beyond its main body, as well as reducing the complexity of its installation, which increases the quality of installation.

The specified result is achieved by the fact that in a known switchgear automatic installation of gas fire extinguishing, containing

- bearing (base) case,

- a locking body connected on one side (at the entrance) to the mains supplying GOTV from the GOTV source, and on the other hand (at the exit) - to the mains for supplying GOTV to the protected room,

- pneumatic actuator of the locking member (hereinafter pneumatic actuator), including a cylinder, piston, rod connected to a movable working (locking) element of the locking member,

- an incentive source of compressed gas,

- the main starting device of the pneumatic drive of the electromagnetic (solenoid) type (hereinafter the electromagnetic starting device or EPU), including the housing and the electromagnet,

- backup manual start device (URP) of the pneumatic actuator, the handle of which is equipped with a safety check against unauthorized switching on,

- the cavity of the stimulating source of compressed gas is communicated by a channel with a working (pressure) cavity above the pneumatic actuator piston through a normally closed first (main) EPU valve, which is connected to the armature of the EPU electromagnet,

firstly, the locking element is placed in the bearing housing;

secondly, the locking body is made in the form of a mushroom-shaped flange spring-loaded relative to the bottom of the bearing housing, placed coaxially with the pneumatic actuator piston, rigidly connected to the pneumatic actuator rod and made interacting with the annular saddle of the internal cavity of the bearing housing through an annular bead;

thirdly, the stimulating source of compressed gas is made in the form of a pneumatic chamber consisting of a cylinder with a bottom and a cover located coaxially to the bearing body and rigidly connected to it;

fourthly, the outlet cavity of the first EPA valve is communicated with the working cavity above the pneumatic actuator piston through the outlet in the housing wall, through the induction tube, and also through the inlet and channel in the bottom of the pneumatic chamber cylinder;

fifthly, in order to prevent malfunctioning of a switchgear with electric start (hereinafter RUE) in the first version of an emergency, for example, during a sudden power outage or in the event of a failure of one of the EPU elements in case of fire, the URP handle is normally connected to the second (auxiliary) one through the rod a closed valve, the rod cavity of which, on the one hand, is in communication with the cavity of the outlet in the wall of the ECU housing, and on the other hand, when the valve is open, it is in communication with the cavity of the pneumatic chamber;

sixth, to prevent the installation from failing in the second version of an emergency situation when an unexpected pressure drop occurs over the pneumatic actuator piston, a third (safety) normally open valve is installed between the EPU body and the induction tube, the cavities of which communicate with the cavities of the outlet in the EPU body and the induction tube;

seventh, in order to prevent false alarms of the installation in the third variant of an emergency situation when the first and second valves are leaky, the fourth (drain) normally open valve is installed on the EPU body, the inner cavity of which is in communication with the cavity of the outlet in the wall of the EPU, and the outer cavity is communicated with the atmosphere.

Introduction to the design of the switchgear of new nodes and elements, as well as the special implementation of existing nodes and elements, can significantly improve the reliability and efficiency of both the switchgear and the gas fire extinguishing system as a whole.

The inventive utility model is illustrated by drawings, which show the following:

Figure 1 shows a diagram of the installation of gas fire extinguishing indicating the location of the switchgear and the block of the starting control panel of the control device.

Figure 2 shows a General view of the inventive switchgear in front view.

Figure 3 shows a top view of the inventive switchgear.

Figure 4 shows the inventive switchgear in a perspective view with a partial cutaway to show the main elements of the device, their relative position and interaction.

The proposed switchgear of an automatic gas fire extinguishing installation includes: a bearing (base) housing 1, in which a locking element with a pneumatic actuator is located, including a cylinder 2, a piston 3, a rod 4 connected to a movable working (locking) element of the locking element, made in the form of a spring-loaded spring 5 relative to the bottom of the bearing body 1 of the mushroom-shaped flange 6, placed coaxially with the pneumatic actuator piston 3, rigidly connected to the pneumatic actuator rod 4 and made interacting with the annular gray scrap 7 of the inner cavity of the bearing housing 1 through an annular flange 8. The locking element is connected on one side (at the entrance) through the inlet 9 with a line 10 supplying the GOTF from the GOTV source (not shown in the drawing), and on the other hand (at the output) - through the outlet fitting 11 with the highway 12 supply GOTV in the protected room.

To start the pneumatic actuator there is a stimulating source of compressed gas, made in the form of a pneumatic chamber, consisting of a cylinder 13 with a bottom 14 and a cover 15, located coaxially to the bearing body 1 and rigidly connected to it.

There are also two pneumatic actuator starters.

The main trigger device of the electromagnetic (solenoid) type pneumatic actuator (hereinafter referred to as the electromagnetic trigger device or EPU) includes a housing 16 with an electromagnet 17 mounted on it, mounted so that the axis of the armature 18 of the electromagnet 17 is located in a plane parallel to the axis of the pneumatic chamber.

The cavity of the cylinder 13 of the pneumatic chamber is in communication with the working (pressure) cavity above the piston 3 of the pneumatic actuator through a normally closed first (main) valve 19 of the ECU.

The outlet cavity of the first EPU valve 19 is in communication with the working cavity above the pneumatic actuator piston 3 through the outlet in the wall of the housing 16, through the induction tube 20, and also through the inlet and channel in the bottom 14 of the cylinder 13 of the pneumatic chamber.

To turn the unit on during an emergency, for example, during a sudden power outage, there is a backup device for manual start (URP) of the pneumatic actuator, the handle 21 of which, equipped with a safety check 22 against unauthorized switching on, is connected through the stem 23 to the second (auxiliary) normally closed valve 24 EPU, the rod cavity of which, on the one hand, is in communication with the cavity of the outlet in the wall of the body 16 of the EPU, and on the other hand, when the valve is open, it is in communication with the cavity of the pneumatic chamber.

To prevent the installation from operating in an emergency situation when the pressure drops suddenly over the piston 3 of the pneumatic actuator, a third (safety) normally open valve 25 is installed between the EPU body 16 and the induction tube 20 (see Figs. 2, 3), the cavities of which are connected with the cavities of the outlet the housing 16 of the ECU and the induction tube 20.

In order to avoid false triggering of the installation in an emergency situation when the first 19 and second 24 valves of the ECU are leaking, the fourth (drainage) normally open valve 26 is additionally installed on the EPU body 16, the inner cavity of which is in communication with the outlet cavity in the wall of the ECU 16 and the outer cavity is communicated with the atmosphere.

The proposed switchgear (RUE) of an automatic gas fire extinguishing installation is operated as follows.

I stage. Preparation for operation.

Before starting operation, a working gas, such as nitrogen, is injected into the pneumatic chamber under high pressure and its pressure is constantly visually monitored using a pressure gauge 27.

II stage. Operation of RUE in a normal situation.

In a normal situation, when a fire starts in a protected room 28, when an emergency electric signal is received from a sensor 29, an electromagnet 17 of the corresponding switchgear 30 receives a signal from a control and monitoring device 31, the armature 18 of the electromagnet 17 opens the first valve 19 of the electronic control unit and reports the output cavity of the first valve 19 with a working (pressure) cavity above the piston 3 of the pneumatic actuator, as a result of which the shut-off element of the GOTV and GOTV lines opens from the gas fire extinguishing module 32 along the lines 10 and 1 2 enters the protected emergency room 28.

After the installation is completed in a normal situation, all triggered elements and units return to their original state and the switchgear is again ready for operation.

III stage. Operation of RUE in emergency situations.

In the first case of an emergency situation, when it is impossible to start the switchgear from the control station, for example, if the power is suddenly turned off, pull out the safety pin 22 and rotate the handle 21 of the control device 90 degrees around its axis, as a result of which the eccentric of handle 21 of the control device will move the rod 23, which squeezes the second (auxiliary) valve 24 of the control valve and the compressed gas from the pneumatic chamber enters the working (pressure) cavity above the piston 3 of the pneumatic actuator, bypassing the channel blocked by the first (main) valve 19 of the control valve, into the cut and then the main valve of the shut-off element opens.

In the second variant of an emergency situation, when the pressure drops suddenly over the piston 3 of the pneumatic actuator due to the jump-like pressure difference between the inlet to the third valve 25 and the exit from it, this valve closes and prevents further pressure drop over the piston 3 of the pneumatic actuator, thereby ensuring normal operation of the RUE.

In the third variant of an emergency situation, when the first 19 and second 24 valves of the ECU are leaking, the fourth (drainage) normally open valve 26 is actuated, reporting the cavity of the outlet in the wall of the ECU housing 16 with the atmosphere, eliminating the unauthorized flow of compressed gas and thereby eliminating the false operation of the RUE in the mode waiting for an alarm. When an alarm occurs, the fourth valve 26 closes, providing a regular response RUE.

Using the proposed utility model allows:

1. To increase the efficiency of ensuring the readiness of fire-fighting equipment for immediate use while ensuring the maximum possible fire-fighting effect during its use by reducing the risk of damage to an automatic gas fire extinguishing installation during its operation.

2. Significantly increase the reliability of the automatic gas fire extinguishing installation by increasing the reliability of one of its main components - the switchgear due to the simplification of its design.

3. Significantly reduce the weight and size characteristics of the switchgear by reducing the product elements protruding beyond its main body.

4. Significantly reduce the complexity of the installation of the switchgear and improve the quality of installation by increasing the convenience of installation and eliminating unproductive operations for additional adjustment of blocks and elements mounted in different places.

5. To increase the manufacturability of the switchgear, reduce the cost of its manufacture and improve its operating conditions by simplifying the design.

Claims (4)

1. Distribution device of an automatic gas fire extinguishing installation, comprising a supporting body, a shut-off element connected on one side to a line supplying gaseous fire extinguishing substances (GOTV) from the GOTV source, and on the other hand, to a GOTV supply line to the protected room, a pneumatic drive of the shut-off body (hereinafter referred to as a pneumatic actuator), including a cylinder, a piston, a rod connected to a movable working element of a shut-off element, a stimulating source of compressed gas, the main trigger of an electric pneumatic actuator of an agnitic type (hereinafter EPU), including a housing and an electromagnet, a backup manual start device (hereinafter URP) of the pneumatic actuator, the handle of which is equipped with a safety check against unauthorized activation, and the cavity of the stimulating source of compressed gas is communicated by a channel with a working cavity above the pneumatic actuator piston through a normally closed first valve EPU, which is connected to the armature of the EPU electromagnet, characterized in that the shut-off element is placed in the bearing housing and is made in the form of a spring-loaded relative to the bottom the housing of the mushroom-shaped flange placed coaxially with the pneumatic actuator piston, rigidly connected to the pneumatic actuator rod and made interacting with the annular saddle of the internal cavity of the bearing body through an annular shoulder, the stimulated source of compressed gas is made in the form of a pneumatic chamber consisting of a cylinder with a bottom and a cover located coaxially to the bearing body and rigidly connected to it, the outlet cavity of the first EPA valve is communicated with the working cavity above the pneumatic actuator piston through the outlet in the core wall pusa, through the induction tube, as well as through the inlet and channel in the bottom of the cylinder of the pneumatic chamber. 2. The switchgear according to claim 1, characterized in that in order to prevent the switchgear from operating when the power is suddenly turned off, the control circuit breaker handle is connected through the rod to a second (auxiliary) normally closed valve, the rod cavity of which is connected on one side to the outlet cavity in the housing wall EPU, and on the other hand, with the valve open, communicates with the cavity of the pneumatic chamber. 3. The switchgear according to claim 1, characterized in that in order to prevent failure of the switchgear when the pressure drops suddenly over the pneumatic actuator piston, a third (safety) normally open valve is installed between the EPU body and the induction tube, the cavities of which are connected to the outlet openings in the EPU case and a motive tube. 4. The switchgear according to claim 1, characterized in that in order to prevent false triggering of the switchgear when the first and second valves of the electronic control unit are leaking, a fourth (drainage) normally open valve is installed on the electronic control unit, the internal cavity of which is in communication with the cavity of the outlet in the wall of the electronic control unit , and the outer cavity is in communication with the atmosphere.