CN1102930A

CN1102930A - Valve for fire fighting installation

Info

Publication number: CN1102930A
Application number: CN 94190087
Authority: CN
Inventors: 戈兰·桑德霍姆
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-29
Filing date: 1994-01-31
Publication date: 1995-05-24

Abstract

A valve used for fire fighting equipment contains an entrance, an exit and a valve stem. The entrance communicates with a high pressure liquid source. The exit communicates with a leading-out wire. And the valve stem can move between a preparation position and a start-up position. When the valve stem is on the preparation position, the valve stem closes the communication channel of the entrance and the exit; however, when the valve stem is on the start-up position, the valve stem opens the communication channel of the entrance and the exit.

Description

Valve for fire fighting installation

The present invention relates to a kind of valve that is used for fire-protection equipment especially for the fire-protection equipment that can turn round with the high drive pressure of extinguishing fluid.Here, high-pressure means that common low-voltage equipment then only has the working pressures of about 5 to 10 crust at the pressure of about 30 crust to about 300 crust scopes.Preferably the fluid supply of at least one hydraulic accumulator as fire extinguishing, the lighting outlet of this hydraulic accumulator then links to each other with several automatic-opening shower nozzles.

Known high pressure valve is expensive, and is that electricity consumption is controlled as a rule, and this is a defective in the environment that catches fire.

The purpose of this invention is to provide a kind of novel valve, this valve has reliability and has simple structure under the situation of not using electric current, thereby is cheap.

The major character of the present invention's valve is that it comprises: an inlet, and this inlet can interlink with high pressure liquid source; One outlet, this outlet can interlink with a lighting outlet; An and valve rod, this valve rod can move between a position of readiness and an enable position, and at above-mentioned position of readiness place, described valve rod has been closed from above-mentioned and entered the mouth leading to the outlet, and at above-mentioned enable position place, described valve rod was then opened from above-mentioned the leading to the outlet that enter the mouth;

Described valve rod comprises an axial hole, and this through hole interlinks the above-mentioned outlet of valve and a liquid chamber, and this liquid chamber is subjected to the effect in secondary liquid source, and this secondary fluid supply has the pressure lower than aforementioned high pressure liquid source;

Described valve rod has a convex shoulder surface, and this convex shoulder surface is subjected to and the effect of described liquid chamber to the rightabout high-voltage power supply pressure of pressure effect of valve rod; And

Regulate the pressure in above-mentioned secondary liquid source and the size on convex shoulder surface in such a way mutually: when described secondary liquid source acts on valve rod with whole pressure by liquid chamber, this valve rod is in position of readiness, and the shower nozzle of having opened because of liquid sends to when the pressure in described secondary liquid source is when dropping to a predetermined value, and high-voltage power supply acts on the lip-deep pressure of described convex shoulder can be advanced into enable position with valve rod.

Be preferably in the axial hole of above-mentioned valve rod a safety check is set, this safety check can stop the pressure of high pressure liquid source to enter liquid chamber under the starting state of aforementioned valve.One spring can be set in liquid chamber, and this spring acts on valve rod with certain elastic force, thus high-voltage power supply put be depressed into such as 20 the crust after make valve rod be extruded into position of readiness.

In most of the cases, preferably can begin to open whole one group and be generally adjacent shower nozzle from a shower nozzle of opening immediately because of catching fire.The invention still further relates to a kind of above-mentioned purpose shower nozzle that is used for.This shower nozzle comprises valve rod parts, and these valve rod parts are pressed in the inlet of shower nozzle because of the elastic force of spring, thereby these valve rod parts can make above-mentioned inlet keep closing against the pressure in secondary liquid source, but these valve rod parts can be yielded to the pressure of high pressure liquid source.

Hereinafter with reference to the schematic most preferred embodiment shown in the accompanying drawing the present invention is described, in the accompanying drawings:

Fig. 1 has shown the valve that is in holding state;

Fig. 2 has shown the above-mentioned valve that is in starting state;

Fig. 3 has shown the connection figure of the fire-protection equipment that is in holding state;

Fig. 4 to Fig. 6 has shown and has been in holding state in the said equipment respectively, opening state and first most preferred embodiment of the shower nozzle of opening state separately in groups;

Fig. 7 to Fig. 9 has shown second most preferred embodiment of shower nozzle in the mode identical with Fig. 4 to Fig. 6.

1 expression has the hydraulic accumulator of higher pressurising pressure (for example 200 crust) with reference to label.The accumulator 1 that also is referred to as elementary accumulator hereinafter comprises a delivery channel, on the tube wall of this conduit, preferably be provided with a plurality of perforates, so that as described in No. the 924752nd, the application for patent, transmit the liquid of accumulator and the mixture of liquid and propellant respectively.The outlet valve that is connected with conduit 2 represents with label 3 that generally the inlet of this valve is represented, exported with label 5 and represent with label 4.

Outlet 5 is connected with some automatic-opening shower nozzles 26 to 29 by lighting outlet 25, as shown in Figure 3.

According to Fig. 1, at the position of readiness place of valve 3, valve rod 6 has been closed leading between valve inlet 4 and the outlet 5.Valve rod 6 has an axial hole 7, this through hole makes outlet 5 be connected with liquid chamber 8, and liquid chamber then links to each other with small-sized (for example about 0.3 liter) hydraulic accumulator 9 with low pressurising pressure (for example 6 to 10 crust), and hereinafter, this accumulator also is referred to as secondary accumulator.

Valve rod 6 comprises a head 10, this head can resemble the similar piston between position shown in Figure 1 in liquid chamber 8 and the position shown in Figure 2 and move, in above-mentioned position shown in Figure 1, head 10 is close to the valve outer cover that contains valve rod 6, enter the mouth 4 to leading between the outlet 5 thereby closed, and in above-mentioned position shown in Figure 2,10 on head is close to convex shoulder 11, enters the mouth 4 to leading between the outlet 5 thereby opened.

In Fig. 1, valve rod 6 is because of the pressure that acts on the liquid chamber 8 on the valve rod head 10 and be pressed in the appropriate location that the spring 12 on the valve rod head 10 keeps.In valve rod 6 active procedures, pressure that having formed in opposite direction enters the mouth acts on described valve rod end in 4 and elementary accumulator act on the pressure on the annular convex shoulder 13.

When the shower nozzle that links to each other with outlet 5 was opened, elementary accumulator 9 began to send liquid to described shower nozzle.Thus, pressure in the liquid chamber 8 can descend rapidly, so, accumulator 1 can produce the pressure that acts on convex shoulder 13, and described valve rod then begins to shift to the right side of Fig. 1, and, because valve rod 6 has arrived inlet 4 places towards the end of outlet 5, so this end can be subjected to the effect of elementary accumulator pressure, simultaneously, this valve rod is pushed to the end position among Fig. 2 facing to retainer 11.The best elastic force of Regulation spring 12 in such a way: the elastic force of this spring is put at elementary accumulator can push backwards to position shown in Figure 1 from position shown in Figure 2 with valve rod 6 after pressing.

The safety check 14 that is positioned at valve rod 6 through holes 7 can prevent that the pressure of elementary accumulator from entering liquid chamber 8 in position shown in Figure 2.Label 15 expression one pressure gauge, label 16 then represent one can manual control standby unlocking unit, in Fig. 1 and Fig. 2, this opening device is that close and inoperative.

When catching fire, start one group of this class shower nozzle that also has releasing tube integral body, normally advantageous.The nozzle component that shower nozzle 26 to 29 among Fig. 3 comes to this, Fig. 4 to Fig. 6 have shown a most preferred embodiment of the shower nozzle that is used for this purpose.

Described shower nozzle has a common releasing tube 30, and this releasing tube engages with one first valve rod parts 31, and is subjected to pushing of spring 32, and the other end of spring 32 then makes one second valve rod parts 33 be close on the inlet drilling of described shower nozzle.The elastic force of Regulation spring 32 in such a way: according to Fig. 4, the elastic force of this spring makes the second valve rod parts 32 push down the inlet of described shower nozzle when valve on the elementary accumulator 1 is in state shown in Figure 1 promptly being installed on against whole pressure of secondary accumulator 9 under the situation of releasing tube 30 of not crushing.Therefore, these valve rod parts 33 can make with leading to of spray nozzle 34 and keep closing.

In Fig. 5, the effect crushed already or flame nearby of the releasing tube 30 of shower nozzle 26 is fusing down.Spring 32 had been run into valve rod parts 31 already downwards, and valve rod parts 33 can be run into the retainer 35 that is installed on the shower nozzle outer cover already thereupon under the effect of secondary accumulator 9 pressure.From the inlet of shower nozzle 26 to opening leading to its nozzle 34.

Therefore, as previously mentioned, the valve 3 on the elementary accumulator 1 will present state shown in Figure 2, and the pressure of this accumulator then can be in the ingress to shower nozzle 27,28 and 29 generation effects.As shown in Figure 6, for example, the valve rod parts 33 of shower nozzle 29 will fit in retainer 35, and, from the inlet of this shower nozzle to opening leading to the nozzle 34.The best elastic force of Regulation spring 32 in such a way: according to Fig. 6, the elastic force of this spring releasing tube 30 of under the state of compression fully, also can not crushing; The pressure that can be used for opening operation at conduit 35 places is set to such as 15 crust.

Fig. 7 to Fig. 9 has shown another kind of embodiment, and this embodiment can be installed on the wall and with the illustrated previous embodiment of reference Fig. 4 to Fig. 6 identical working principle be arranged.Certainly, Fig. 4 can be independent of Fig. 1 to shower nozzle shown in Figure 9 to be used with valve shown in Figure 2, and Fig. 1 and valve shown in Figure 2 do not include extremely shower nozzle shown in Figure 9 of Fig. 4 in constituent element.

Concerning large-scale equipment, the present invention can be applicable to the hydraulic accumulator and/or the high-pressure service pump of any amount.Concerning shower nozzle, nozzle, in groups releaser and other device, all can use in all cases such as the content that in international patent application book PCT/FI92/00060, PCT/FI92/00060, PCT/FI92/00122, PCT/FI92/00155, PCT/FI92/, 00156, PCT/FI92/00193, PCT/FI92/00213, PCT/FI92/00316, PCT/FI92/00317 and PCT/FI92/00330, had illustrated already.

Claims

1, a kind ofly be used for fire-protection equipment, particularly match with high-voltage power supply, it is characterized in that so that send extinguishing fluid the valve of some automatic-opening shower nozzles to:

It comprises: an inlet (4), and this inlet can interlink with high pressure liquid source (1); One outlet (5), this outlet can interlink with a lighting outlet; An and valve rod (6), this valve rod can move between a position of readiness and an enable position, and at above-mentioned position of readiness place, described valve rod has been closed from above-mentioned and entered the mouth leading to the outlet, and at above-mentioned enable position place, described valve rod was then opened from above-mentioned the leading to the outlet that enter the mouth;

Described valve rod (6) comprises an axial hole (7), and this through hole interlinks the above-mentioned outlet of valve and a liquid chamber (8), and this liquid chamber is subjected to the effect of secondary liquid source (9), and this secondary fluid supply has than the lower pressure of aforementioned high pressure liquid source (1);

Described valve rod (6) has a convex shoulder surface (13), and this convex shoulder surface is subjected to and the effect of liquid chamber (8) to the rightabout high-voltage power supply of pressure effect (1) pressure of valve rod (6); And

Regulate the pressure in above-mentioned secondary liquid source (9) and the size of convex shoulder surface (13) in such a way mutually; When described secondary liquid source (9) acts on valve rod (6 with whole pressure by liquid chamber (8), 10) time, this valve rod (6) is in position of readiness, and the shower nozzle of having opened because of liquid sends to when the pressure in described primary liquid source (9) is when dropping to a predetermined value, and the pressure that high-voltage power supply (1) acts on described convex shoulder surface can be advanced into enable position with valve rod (6).

2, valve as claimed in claim 1 is characterized in that: in the axial hole (7) of described valve rod (6) safety check (14) is set, so that stop high pressure liquid source to enter liquid chamber (8) under the starting state of this valve.

3, valve as claimed in claim 1 is characterized in that: a spring (12) is set in liquid chamber (8), and the mode that this spring matches with the pressure with secondary liquid source (9) acts on valve rod (6).

4, valve as claimed in claim 1 is characterized in that: described secondary liquid source is a hydraulic accumulator (9).

5, valve as claimed in claim 1 is characterized in that: described convex shoulder surface is an annular convex shoulder (13).

6, a kind of shower nozzle, this shower nozzle are used in particular for having extinguishing fluid with the fire-protection equipment of high-voltage power supply and have the described valve of claim 1, it is characterized in that:

It comprises valve rod parts (33), these valve rod parts are pressed in the inlet of described shower nozzle because of elastic force (32), thereby these valve rod parts (33) can make above-mentioned inlet keep closing against the static of above-mentioned fire-protection equipment or standby pressure, but these valve rod parts can be yielded to the pressure of aforementioned high pressure liquid source, so that liquid is sent to the nozzle (34) of shower nozzle by complete releasing tube (30).

7, shower nozzle as claimed in claim 6, it is characterized in that: said releasing tube (30) engages with one first valve rod parts (31), and be subjected to pushing of spring (32), the other end of spring (32) then makes one second valve rod (33) be close on the inlet drilling of described shower nozzle, and the described second valve rod parts are configured to be subjected to the restriction of fixed stop (35) on the described shower nozzle outer cover in the inside motion under the elevated pressure effect.

8, shower nozzle as claimed in claim 6 is characterized in that: the elastic force of Regulation spring (32) in such a way: when the second valve rod parts (33) are run into retainer (35), and the releasing tube (30) of can under the compressive state of spring (32), not crushing.