SU1553152A1 - Sprinkler-signal device - Google Patents

Abstract

The present invention relates to fire fighting equipment, namely, sprinklers designed to continuously monitor and signal the presence of the required pressure of extinguishing liquid, in particular water, in the piping of the fire extinguishing system, as well as to automatically turn on the supply of extinguishing liquid with the simultaneous formation of an opening signal sprinkler when the temperature in the protected room rises above the set limit. The purpose of the present invention is to enhance the functionality of the sprinkler. By ensuring its operability in systems with pipelines both in standby mode under the pressure of a fire extinguishing agent, and in the mode of no pressure. This is achieved in that it contains a locking device, an additional chamber, which is hydraulically connected via a channel to the fire-extinguishing agent supply chamber. If a sprinkler detector is installed in a system with a constant pressure, the pressure of the extinguishing agent is transferred from the fire extinguishing agent supply chamber through the channel to the secondary chamber, and through the holes into the space inside the cylinder, acting on the elastic membrane and ensuring it is in a convex position. Due to the effect of the elastic closing contact on the control signal circuit, it is in a closed state. The insulating membrane forms a surface impermeable to the extinguishing agent. The pressure threshold value is controlled by means of the signaling device. The opening of the sprinkler with the simultaneous formation of an opening signal occurs regardless of the presence of pressure extinguishing fluid or compressed air in the pipelines of the fire protection system. 4 il.

Description

The invention relates to fire fighting equipment, in particular to sprinklers designed to continuously monitor and signal the presence of the required pressure of extinguishing fluid, in particular water, in pipelines of the fire extinguishing system, as well as to automatically turn on the supply of extinguishing fluid while simultaneously generating an electrical signal opening the sprinkler when the temperature in the protected room rises above the set limit.

The purpose of the invention is to enhance the functionality of the sprinkler by

ensuring its operability in systems with pipelines both in the standby mode under the pressure of the extinguishing agent and in the mode of the absence of pressure.

FIG. Figures 1 and 2 show the pre-opening sprinkler, cuts; Fig. 3 shows the same, in the post-dissected state; in fig. 4 is a schematic diagram of the sprinkler signaling device.

The sprinkler consists of an inlet fitting 1 with an external thread, a housing 2 with an internal thread for fastening to the fitting 1 at the inlet, a fitting 3 attached to the outer surface

SP

with

SP tsD

of the housing 2 and interoperable with its cavity signal device 4 connected to fitting 3, shut-off valves 5, 6, sealing washers 7, 8. installed to ensure tightness when blocking sections of the outlet openings of the body 2 shut-off valves 5 and 6 supporting rods 9 attached to the shut-off valve 5 and to the body 2 with the possibility of their movement relative to the body 2. of the V-shaped rocker arm 10, which keeps the shut-off valves 5 and 6 in the extreme upper position, lever in the lock 11, 12, which engage with the housing 2 and hold the rocker arm 10 in the working position, the lock plates 13, the inner ends of which are sleeves with a fusible alloy, and the outer ends have holes through which the lock levers 11, 12, the stop screw 14 are passed, one of the plates of the lock 13 passing through the opening and allowing adjustment of the force acting from the levers 11, 12 on the rocker arm 10.

In the case of the sprinkler 2 there is a chamber for supplying extinguishing agent 15, connected to fitting 1, channel 16, hydraulic unloading chamber 17, which also includes the space inside fitting 3, in the lower part of housing 2 there are slots 18, 19 for hooking the lock levers 11. 12. moreover, the cameras 15 and 17 are interconnected by channel 16.

On the inner surface of the hydraulic unloading chamber 17 there are annular projections 20-22. Inside the chamber 17, there is a hollow cylinder 23 having an annular protrusion 24, formed on the outer surface of the side wall, and openings 25, 26 arranged at different levels.

The hollow cylinder 23 has the shape of a glass with a solid bottom and a top made in the form of a diffuser, covered by an elastic membrane 27, which can be in two main stable positions - convex and concave, and change from one position to another depending on the direction and size of the attached to her mechanical effort.

Sealed separation of the space inside the hydraulic unloading chamber 17 from the signaling device 4 is carried out using an elastic membrane 27 and a flexible inelastic membrane 28 attached to the side wall of the cylinder 23 in its upper part and to the base of the design of the signaling device 4.

Between the protrusion 20 of the chamber 17 and the protrusion 24 of the cylinder 23 there is an actuating spring 29

The signaling device 4 comprises a housing 30. a cover with a transparent cap 31, electrical contacts 32. 33 and 34. 35, so0

0

corresponding, in parallel, two parallel-arranged pairs of contacts of a pressure control signal circuit, electrical contacts 36, 37 of a circuit transmitting a signal

breaking the sprinkler, signal lamp 38, electrical resistance 39 of the pressure control signal circuit, the light bulb 38, resistance 39 and contacts 34, 35 form a serial connection of terminal 40 for connecting the wires of the signal circuits to the signal device, an adjusting spring 41 with a protective casing made of dielectric 42, isolating the spring from the electrical contacts, the adjusting screw 43.

On the elastic membrane 27 is fixed made of a dielectric supporting element 44 with an elastic closing contact 45 mounted on it. In the lower part of the sprinkler body 2 there is a spring 46.

In standby mode, the valve 5 with the compressed spring 46 and the valve 6 is held by the V-shaped rocker arm 10 and covers the output sections of the chambers 15, 17 (Figs. 1, 2). The hollow cylinder 23 holds 5 s in the upper position by valve 6, with the opening 25 being coaxial with the channel 16, and the actuating spring 29 is in a compressed state.

When a sprinkler detector is installed in a system with constant pressure, the pressure of extinguishing fluid or compressed air from chamber 15 through channel 16 is transferred to chamber 17 and through openings 25, 26 into the space inside cylinder 23, acting on the elastic membrane 27 and ensuring its finding in a high position. The elastic make contact 45 is also in its extreme upper position, acting on the protective casing 42, compressing the adjusting spring 41 and constantly maintaining the signal of the NUW pressure control circuit in a closed state via contacts 32 and 33 (Fig. 4, pos. 1). The inelastic membrane 28 forms a surface impermeable to the extinguishing fluid and prevents the ingress of fluid into the signal device 4.

The sprinkler works as follows.

When the pressure of the fire extinguishing fluid or compressed air in the pipeline, on which the proposed sprinkler detector is installed, or when blockages occur in the path of the extinguishing fluid supply, the pressure on the elastic membrane 27 from the chamber 17 side disappears and due to the force of the compressed spring 41

5, the membrane 27 goes into the concave position and the contact 45 closes the contacts 34, 35 (Fig. 1, the position of the membrane 27 is indicated by a dotted line; Fig. 4, pos. II) v In signal

The pressure control circuits during the passage of electric current through the signal lamp 38 and the resistance 39 cause an additional voltage drop across the load, which is fixed on the control panel and indicates that there is no pressure in the sprinkler. A quick signal lamp 38 helps to quickly detect such a sprinkler.

The threshold pressure at which electrical contacts 34, 35 are closed is determined by the force of the adjusting spring 41 on contact 45 and can be adjusted by means of a screw 43

When the temperature in the protected room rises to the temperature of the sprinkler opening, the low-melting alloy of the lock melts. Under the pressure of a fire extinguishing fluid or compressed air and due to the forces generated by the compressed springs 29 and 46, the plates 13 disintegrate and fall out together with the levers 11, 12 and the rocker arm 10, ceasing to hold the valves 5 and 6

The valve 5 under the action of the velocity head coming from the chamber 15 of the fire extinguishing fluid is lowered down the free-wheeling distance of the supporting rods 9 and performs the function of an outlet, ensuring the fire-extinguishing fluid sprays over the fire center (Fig. 3)

After the valve 6 is removed, the cylinder 23 under the action of the actuating spring 29 descends to such a position that the annular protrusion 24 of the cylinder 23 abuts against the protrusion 21 of the chamber 17. At the same time, the aperture 25 is displaced downward relative to the channel 16, which prevents fire extinguishing fluid from the channel 16 into the cavity of the cylinder 23 due to the small gap between the protrusion 22 on the inner surface of the chamber 17 and the side wall of the cylinder 23. The contact 45 is lowered together with the cylinder 23 and closes the contacts 36, 37, thereby forming an opening signal sprinkler (Fig. 4, pos. III)

When a sprinkler detector is installed in a system in which there is no pressure in the standby mode, the elastic diaphragm 27 is in the concave position due to the action of the spring 41 through the protective cover 42 on the elastic make contact 45 (fig. 1, the position of the membrane is indicated by the dotted line). In this case, the contact 45. closes the contacts 34 and 35 (Fig. 4, pos. II). In this situation,

- 0

five

0 5

50

0

The electric current is controlled by CPRN pressure control through the contacts 34, Zo. by means of contact 45, signal l;: kidney 38 and electrical resistance M1 indicate that the rnkler is in the ready state. Otherwise, the sprinkler is in standby mode; it is as described above.

In a system without pressure, the working room, slr1ler, with increasing temperatures i in the am; i room to the temperature of the sprinkler corresponds to the above description.

Thus, the opening of the sprinkler with the simultaneous formation of an opening signal occurs regardless of the pressure of the extinguishing fluid or compressed air in the pipelines of the fire and steam system.

Claims (1)

Invention Formula Sprinkler signaling device, to contain and the bringing union, with kam uy supply of fire extinguishing substance. a sonal device with a means: to-displace any closing contact, from the fact that, in order to expand the functional capabilities of the sprinkler; - to ensure its operability in-those with pipelines as pressurized extinguishing agent; in the absence / ai mode, it contains a shut-off device but an additional chamber, which is hydraulically connected through the injected channel to the fire-extinguishing agent supply chamber, the sipilny device is made three-point with the means of setting the threshold value ION, displacement means kopim signaling device disposed in the chamber and w additionally designed as a spring-loaded hollow cylinder with straight goy membrane and with two openings, one of which is located at about that axis. the channel and the second in the lower part of the cylinder; the elastic membrane is connected with the contact of the signal device, which is made elastic, the upper part of the additional chamber is bounded by the scholiruyuschaya membrane connected with the cylinder, the tanner device is made by wiping the tapes with means holding and in working position, and the valves are set. I have the ability to overlap the output of the SS-line mentioned cameo 31 14 CJ 2 36 m 4141 a / B 57 1615 P