RU2747958C1 - Lock and release device of gas fire extinguishing installation - Google Patents

Abstract

FIELD: fire-fighting equipment.

SUBSTANCE: invention relates to fire-fighting equipment, namely to a lock and release device for a gas fire-extinguishing installation, which stores a fire-extinguishing agent under pressure in a cylinder and releases it upon receipt of a trigger pulse from external triggers. The lock and release device of the gas fire extinguishing installation includes a hollow body with inlet and outlet channels, a shutoff element installed with the possibility of its reciprocating movement and blocking the axial passage in the working control chamber, closed with covers. The shut-off element is made in the form of a cylindrical piston shutter with the possibility of movement in the working control chamber under a control action along an axis located perpendicularly and intersecting the axis of the product supply channel. On the edge of the cylindrical surface of the piston valve from the side of the control channel, a circular groove is made into which an O-ring made of SKF-260V fluorocarbon rubber is installed. A saddle groove is made on the cylindrical surface of the piston valve, around the product feed channel, into which an O-ring made of SKF-260V fluorocarbon rubber is installed. A guide groove is made on the side surface of the cylindrical piston valve, which provides movement relative to the cylindrical pin installed in the hole in the chamber and prevents the shutter from turning in it. Two through holes are made on the lateral cylindrical surface of the working chamber. The spring-loaded ball locks of the shutter go into these holes in the closed and open position. A threaded hole is made in the center of the left screwed-on cover of the device chamber, into which a tube is screwed in, supplying a control action for opening the shutter with a vector coinciding with the axis of movement of the shutter. A threaded hole is made in the center of the right-hand screwed-on cover of the device chamber, into which a plug is screwed in the form of a stopper plug. Such a plug has a structural leakage on the thread and provides the required deceleration of the valve movement due to a gradual decrease in pressure in the damping cavity near the right cover. Likewise, the stopper plug can be turned over and a transport stopper is screwed into this hole with a long part, excluding the possibility of movement of the shutter and opening of the device.

EFFECT: simple, fast and reliable lock and release device.

1 cl, 2 dwg

Description

Technology area

The invention relates to fire-fighting equipment, namely to a locking and starting device (ZPU) of a gas fire extinguishing installation, which retains (stores) a fire extinguishing agent under pressure in a cylinder and releases it when a starting pulse is received from external starting devices. In terms of functional and design, the ZPU refers to shut-off valves of the valve type, powered by the energy of the working environment.

Known locking and starting device for the fire extinguishing installation (patent RU 2695389 IPC A62 C37 / 38 (2006.01), Publ. 07/23/2019, bull. No. 21), containing a housing with a cover with a nipple valve located in it, while the cover is fixed in the housing with using a locking screw, a piston with a lip seal is placed inside the body, a piston seat gasket ensures tightness of the charged module, a steel calibrated wire is installed in the opening of the capillary channel, a pressure gauge connection unit provides the ability to mount pressure monitoring devices for visual monitoring of excess pressure in the module, an installed protective ring protects the pressure gauge from mechanical damage, moreover, to protect the module from emergency overloading by excess pressure, the ZPU is equipped with a membrane safety device with a bursting safety disc (LPD), and the design of the ZPU provides the connection of the LPU with the gas phase of the cylinder through an internal channel, and the ZPU has a channel for connecting a pneumatic start, and the hole of the pneumatic start channel is closed with a plug, and the plug is made double-sided: when installed on one side, it serves as a plug, and when installed on the other side, it serves as a stop bolt, and the stop bolt blocks the possibility of raising the piston during transportation and installation of the gas fire extinguishing module, protecting the ZPU from unauthorized operation, and the outlet connection of the ZPU is closed with a transport plug connected to the body by a chain, and the pressure switch connection unit, in the general case, is designed to install a discrete pressure sensor for remote control of the pressure drop of the propellant in module below the specified value, while the sealing ring ensures the tightness of the threaded connection of the inlet fitting of the ZPU and the neck of the cylinder, the locking screw is designed to fix the siphon pipe in the ZPU.

The disadvantage of this solution is not enough simple, fast and reliable control of the shut-off and starting device.

Known is the closest locking and starting device for a gas fire extinguishing installation (patent RU 104468 IPC A62 C37 / 00 (2006.01) Published on 05/25/2011 Bull. No. 14), containing a hollow body with inlet and outlet openings, equipped with fittings for connection, respectively, to a reservoir with fire extinguishing medium and the manifold of the fire extinguishing system, between which, with the formation of a peripheral axial passage, a shut-off element is placed, installed with the possibility of its reciprocating movement and overlap of the peripheral axial passage, while a spool device is installed in the ZPU body and there is a working chamber for controlling the movement of the shut-off element, and the shut-off the body is made in the form of a cylindrical stepped sleeve with two annular steps, sealed relative to the surface of the body, the working chamber is formed between the stepped sleeve and the hollow body, the annular step of the stepped sleeve on the side of the working chamber has an area greater or equal to the area to face stage, which is located in the peripheral axial passage, the nozzle of the ZPU inlet from the side opposite to the inlet opening is equipped with a saddle with radial through holes and an annular protrusion, the lower part of the outer cylindrical surface of the stepped bushing is sealed relative to the inner surface of the annular protrusion of the saddle, a bypass channel is made in the stepped bushing with the possibility of communicating the working chamber with the peripheral axial passage when the ZPU is closed, and in the hollow body of the ZPU there is a channel connecting the working chamber with the spool device.

The disadvantage of a close solution is not enough simple, fast and reliable control of the shut-off and starting device.

State of the art

The technical result is a simple, fast and reliable locking and starting device.

The present technical result is achieved in a locking and starting device for a gas fire extinguishing installation, which includes a hollow body with inlet and outlet channels, a shut-off element installed with the possibility of its reciprocating movement and blocking the axial passage in the working control chamber, closed with covers, and the shut-off element is made in the form cylindrical piston valve with the possibility of movement in the working control chamber under a control action along an axis located perpendicularly and intersecting with the axis of the product supply channel, on the edge of the cylindrical surface of the piston valve from the side of the control action channel, a circular groove is made into which an O-ring made of fluoroelastomer is installed SKF-260V, a saddle-shaped groove is made on the cylindrical surface of the piston valve around the product feed channel, into which an O-ring made of SKF-260V fluoroelastomer is installed, on the side the surfaces of the cylindrical piston valve make a guide groove, which provides movement relative to the cylindrical pin installed in the hole in the chamber and prevents the shutter from turning in it, two through holes are made on the lateral cylindrical surface of the working chamber, into which the spring-loaded ball clamps of the valve enter in the closed and open position, in the center of the left screwed-on cover of the device chamber, a threaded hole is made, into which a tube is screwed, supplying a control action for opening the shutter with a vector coinciding with the axis of movement of the shutter, in the center of the right screw-on cover of the device chamber, a threaded hole is made into which a plug is screwed in the form plugs - a stopper that has a structural leakage along the thread and provides the required slowdown of the shutter movement due to a gradual decrease in pressure in the damping cavity near the right cover or turn the stopper plug over and screw in into this hole with a long part of the transport stopper, excluding the possibility of movement of the shutter and opening the device.

Distinctive features are:

the shut-off element is made in the form of a cylindrical piston shutter with the ability to move in the working control chamber under a control action along an axis located perpendicularly and intersecting with the axis of the product supply channel, this will make it possible to simply quickly and reliably control the shut-off-starting device;

on the edge of the cylindrical surface of the piston valve from the side of the control channel, a circular groove is made, into which an O-ring made of fluorocarbon rubber SKF-260V [3] is installed, which makes it possible to quickly and reliably control the locking and starting device;

a saddle-shaped groove is made on the cylindrical surface of the piston valve around the product feed channel, into which an O-ring made of SKF-260V fluorocarbon rubber is installed, this eliminates product losses in the control of the locking and starting device and increases its reliability;

a guide groove is made on the side surface of the cylindrical piston valve, which provides movement relative to the cylindrical pin installed in the hole in the chamber and prevents the shutter from turning in it, which increases the reliability in controlling the locking and starting device;

on the lateral cylindrical surface of the working chamber, two through holes are made, into which the spring-loaded ball locks of the shutter enter in the closed and open position, this increases the reliability in controlling the locking and starting device and ensures the locking of the shutter in extreme positions, closed or open;

a threaded hole is made in the center of the left screwed cover of the device chamber, into which a tube is screwed, supplying a control action to open the shutter with a vector coinciding with the axis of movement of the shutter, which increases the speed in controlling the shutter-trigger device;

in the center of the right screwed-on cover of the device chamber, a threaded hole is made, into which a plug is screwed in the form of a plug - a stopper, which has a structural leakage along the thread and provides the required slowdown of the shutter movement due to a gradual decrease in pressure in the damping cavity near the right cover, or turn the plug-stopper and a transport stopper is screwed into this hole with a long part, excluding the possibility of movement of the shutter and opening of the device, this makes it possible to protect against unauthorized operation of the device.

Comparison of the claimed solution with analogs and the prototype did not allow us to identify in them the features that distinguish the claimed solution, which allows us to conclude that the criterion of "novelty" is met.

Brief Description of Drawings

The essence of the proposed technical solution is illustrated in Fig. 1 is a front sectional view of the device in a closed position; and FIG. 2 front section of the device in the open position, containing: 1 - ZPU body; 2 - shut-off element in the form of a cylindrical piston valve; 3 - spring-loaded ball locks of the shutter in the closed position; 4 - right cover of the working chamber of the ZPU control; 5 - plug - stopper; 6 - hole in the working control chamber for fixing the shutter in the closed position; 7 - hole in the working control chamber for fixing the shutter in the open position; 8 - guide ball pin; 9 - guide groove; 10 - spring-loaded ball locks of the shutter in the open position; 11- hole in the center of the left cover of the control chamber for the tube supplying the control action; 12 - a sealing ring on the edge of the cylindrical surface of the piston valve; 13 - an O-ring on the side surface of the cylindrical piston valve around the product supply channel; 14 - left cover of the control chamber; 15 - hole in the cover for the key; 16 - hole in the right cover of the control chamber for a stopper; 17 - working chamber for controlling the movement of the shut-off element; 18 - product supply channel; 19 - tube for supplying control action.

Implementation of the invention

The device works as follows. In the initial position, Fig. 1 ZPU is closed. The plug - stopper 5 from the position of the transport stopper is unscrewed from the hole 16 and screwed into the position of the plug, which has a structural leakage along the thread and provides the required deceleration of the shutter 2 due to a gradual decrease in pressure in the damping cavity near the right cover 4. Spring-loaded ball locks of the shutter when closed position 3 are fixed in the hole 6 in the working control chamber 17, the shutter 2 is installed in the closed position, which excludes its displacement under any shock, vibration loads. On the edge of the cylindrical surface of the piston valve 2 from the side of the control action tube 19, a circular groove is made in the form of a hole 11, into which an O-ring 12 made of fluorine rubber SKF-260V is installed, which has a thermo-, aggressive material operating in the temperature range - 35 ° C ÷ + 250 ° С [3] and gives reliable control of the ZPU. A similar function is performed by a device element made on the cylindrical surface of the piston valve 2 around the product supply channel in the form of a saddle-shaped groove 13, into which an O-ring made of SKF-260V fluoroelastomer is installed.

The locking and starting device of the gas fire extinguishing installation carries out the retention (storage) of the fire extinguishing agent under pressure in the cylinder and its release when a trigger pulse arrives from external activation devices. When the sensor is triggered (not shown in the figure) in the ignition zone, an electrical impulse is transmitted to the electromagnetic valve (not shown in the figure), which opens and delivers the product through the tube 19, which is screwed into the hole 11 of the left cover 13 of the control chamber 17 of the housing 1 of the device ... The operating pressure of 20 MPa of the product gives a control action to open the shutter 2 with a vector coinciding with the axis of movement of the shutter, such a constructive solution allows the shutter 2 to open under a control action, fixing it in the open position with a ball lock 10 in the hole 7 and provides unloading of the product through the feed channel product 18 in a straight laminar flow to the extinguishing object. On the side surface of the cylindrical piston valve 2, a guiding groove 9 is made, provides its movement relative to the cylindrical pin 8 installed in the hole in the chamber 17 and prevents the shutter 2 from turning in it, giving reliable control of the locking and starting device. The shut-off element, made in the form of a cylindrical piston valve 2 with the possibility of movement in the working control chamber 17 under the control action along the axis of the control chamber 17, located perpendicularly and intersecting with the axis of the product supply channel 18, eliminates to a minimum resistance to the movement of the product. Working chamber 17 performs the functions of braking the shutter.

Information sources

1. patent RU 2695389 IPC A62 C37 / 38 (2006.01), Publ. 07/23/2019, Bul. No. 21;

2. Patent RU 104468 IPC A62 S37 / 00 (2006.01), Publ. 05/25/2011, Bul. # 14;

3.https: //www.eko-tec.ru/product/5163244/.

Claims (1)

A locking and starting device for a gas fire extinguishing installation, including a hollow body with inlet and outlet channels, a shut-off element installed with the possibility of its reciprocating movement and blocking the axial passage in the working control chamber, closed with covers, characterized in that the shut-off element is made in the form of a cylindrical piston of the valve with the ability to move in the working control chamber under the control action along the axis located perpendicularly and intersecting with the axis of the product supply channel, on the edge of the cylindrical surface of the piston valve from the side of the control action channel, a circular groove is made into which an O-ring made of fluoroelastomer SKF- 260V, a saddle-shaped groove is made on the cylindrical surface of the piston valve around the product feed channel, into which an O-ring made of SKF-260V fluorocarbon rubber is installed, on the side surface of the cylindrical pore of the screw shutter, a guide groove is made, which provides movement relative to the cylindrical pin installed in the hole in the chamber and prevents the shutter from turning in it, two through holes are made on the lateral cylindrical surface of the working chamber, into which the spring-loaded ball locks of the shutter enter in the closed and open position, in the center of the left screwed-on cover of the device chamber, a threaded hole is made, into which a tube is screwed, supplying a control action for opening the shutter with a vector coinciding with the axis of movement of the shutter, a threaded hole is made in the center of the right-side screwed-on cover of the device chamber, into which a plug in the form of a plug is screwed - a stopper having a structural leakage along the thread and providing the required slowdown of the shutter movement due to a gradual decrease in pressure in the damping cavity near the right cover or turn the stopper stopper over and screw into this hole with a long part transport stopper, excluding the possibility of movement of the shutter and opening of the device.

Images