CN201083284Y

CN201083284Y - Alternative decompression valve

Info

Publication number: CN201083284Y
Application number: CNU2007200971468U
Authority: CN
Inventors: 张熔
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-21
Filing date: 2007-08-21
Publication date: 2008-07-09
Anticipated expiration: 2017-08-21

Abstract

The utility model discloses an alternate type pressure release valve, consisting of a valve body and a flap door, wherein the valve body consists of a main pipe and an outlet pipe; both ends of the main pipe respectively form inlets which are connected with two firing-fighting medium containers respectively; the tail end of the outlet pipe is provided with an outlet; the inner circle surfaces of the main pipe which is poisoned on the inner sides of the two inlets are formed a ring lug boss respectively; the flap door is arranged inside the main pipe of the valve body and has two ends respectively formed a valve plug which is arranged between the inlet and the corresponding ring lug boss and of which the maximum diameter is bigger than the minimum diameter of the ring lug boss, and the contact surfaces between the valve plugs and the ring lug bosses are the sealing surfaces. The alternate type pressure release valve of the utility model controls the opening and closing of the inlets by utilizing the pressure change in the firing-fighting medium containers connected with the utility model; compared with the prior alternate type pressure release valve, the utility model does not need an electromagnetic valve, thereby the utility model has the advantages of sensitive control, reliable working and simple structure.

Description

The alternate type Decompression valves

Technical field

The utility model relates to a kind of Decompression valves, particularly relates to a kind of alternate type Decompression valves.

Background technique

The alternate type automatic fire extinguishing system can utilize the fire extinguishing that hockets of the plural container that fills firing-fighting medium, thereby can prolong the operating time of automatic fire extinguishing system.Wherein the firing-fighting medium container is mainly by being arranged on outside tank body and being installed in the inside of tank body and the capsule of the firing-fighting medium of can packing in it is formed.The alternate type Decompression valves is one of vitals that uses in the alternate type automatic fire extinguishing system, is installed in usually on the pipeline that links to each other with the tank body of two firing-fighting medium containers.Fig. 1 is the alternate type pressure-relief valve structure schematic representation of prior art.As shown in Figure 1, the alternate type Decompression valves of this prior art comprises two 7,8 and outlets of solenoid valve G that are installed in respectively on import E and the import F.When needs discharge such as with firing-fighting medium container that import E links to each other in firing-fighting medium when putting out a fire, at first in the space between this tank body and capsule, inject such as pressurizing mediums such as foam, water, under the squeezing action of this pressurizing medium, the firing-fighting medium that is contained in the capsule will outwards spray.In this process, solenoid valve 7 is in closed condition, with keep with firing-fighting medium container that import E links to each other in pressure, then unlatching of solenoid valve 8, import F is connected with outlet G, thereby the pressure in the firing-fighting medium container that links to each other with import F is reduced, at this moment just can in this container, replenish firing-fighting medium.After the firing-fighting medium emptying in the firing-fighting medium container for the treatment of to link to each other with import E in the capsule, system automaticallyes switch and uses another firing-fighting medium container that links to each other with import F, repeats said process then.But, there is following point in the alternate type Decompression valves of this prior art: as mentioned above, the unlatching of this alternate type Decompression valves upper inlet E, F or close by

solenoid valve

7,8 and control, because the working principle of

solenoid valve

7,8, therefore under some service condition, be prone to the phenomenon of bite, and when fire condition occurring, in case the power down phenomenon appears in

solenoid valve

7,8, Decompression valves will reduce the reliability of system works so greatly with regard to cisco unity malfunction.

Summary of the invention

In order to address the above problem, the purpose of this utility model is to provide the alternate type Decompression valves of a kind of simple in structure, control sensitivity and reliable operation.

In order to achieve the above object, the alternate type Decompression valves that provides of the utility model is made up of valve body and valve; Wherein valve body is made of the person in charge and outer pipe, the two ends of being responsible on it are formed with an import that can link to each other with two firing-fighting medium containers respectively respectively, the end of outer pipe then has an outlet, and is positioned on person in charge's inner peripheral surface of two import inboards and is formed with an annular boss respectively; Valve is arranged on the person in charge inside of valve body, two ends be formed with respectively one between import and corresponding annular boss and the biggest place diameter stifled greater than the door of the minimum place of annular boss diameter, and when door is stifled when contacting with annular boss formation sealing surface.

Described alternate type Decompression valves can be used in alternation type foam suppression system, alternate type fine water mist fire-extinguishing system and the alternate type powder extinguishing system.

The alternate type Decompression valves that the utility model provides is to utilize the interior variation in pressure of coupled firing-fighting medium container to control the open and close of its upper inlet, thereby compare with the alternate type Decompression valves of prior art and not need to use solenoid valve, so it is control sensitivity and reliable operation, and simple in structure.

Description of drawings

Fig. 1 is the alternate type pressure-relief valve structure schematic representation of prior art.

The alternate type Decompression valves longitudinal construction sectional view that Fig. 2 provides for the utility model.

Embodiment

Below in conjunction with drawings and the specific embodiments the alternate type Decompression valves that the utility model provides is elaborated.As shown in Figure 2, the alternate type Decompression valves that provides of the utility model is made up of valve body 3 and valve 2; Wherein valve body 3 is made of the person in charge 5 and outer pipe 4, two ends of person in charge 5 are formed with import A, a B that can link to each other with two firing-fighting medium containers respectively respectively on it, the end of outer pipe 4 then has an outlet C, and is positioned on the person in charge's 5 inner peripheral surfaces of two import A, B inboard and is formed with an annular boss 1,1 ' respectively; Valve 2 is arranged on the person in charge 5 inside of valve body 3, two ends be formed with respectively one be positioned between import A, B and the corresponding annular boss 1,1 ' and the biggest place diameter stifled 6,6 ' greater than the door of annular boss 1,1 ' minimum place diameter, and when door stifled 6,6 ' contacts with annular boss 1,1 ' the formation sealing surface.

When the alternate type automatic fire extinguishing system that the alternate type Decompression valves that the utility model provides is installed when the needs utilization is put out a fire, at first to the alternate type Decompression valves on inject such as pressurizing mediums such as foam, water in the space between the tank body of the firing-fighting medium container that links to each other such as import A and the capsule, under the squeezing action of this pressurizing medium, the firing-fighting medium that is contained in the above-mentioned capsule will outwards spray.In this process, because the pressure height in this firing-fighting medium container, therefore coupled import A pressure is also high, under the effect of this pressure, valve 2 will move to the direction of import B, the result makes the door stifled 6 on it be close on the annular boss 1 and this place sealed up, thus keep with firing-fighting medium container that import A links to each other in pressure constant.Meanwhile, door stifled 6 ' will be separated with annular boss 1 ', and import B is communicated with outlet C as a result, thereby the pressure in the firing-fighting medium container that links to each other with import B is reduced, and at this moment just can replenish firing-fighting medium in this container.After the firing-fighting medium emptying in the firing-fighting medium container for the treatment of to link to each other in the capsule with import A, system automaticallyes switch and uses the firing-fighting medium container that links to each other with import B, at this moment need between the tank body of the firing-fighting medium container that links to each other with import B and capsule in the space injection such as pressurizing mediums such as foam, water, under the squeezing action of this pressurizing medium, the firing-fighting medium that is contained in the above-mentioned capsule will outwards spray.In this process, because the pressure height in this firing-fighting medium container, therefore coupled import B pressure is also high, under the effect of this pressure, valve 2 will move to the direction of import A, the result makes the door stifled 6 ' on it be close to annular boss 1 ' and goes up and this place is sealed up, thus keep with firing-fighting medium container that import B links to each other in pressure constant.Meanwhile, door stifled 6 will be separated with annular boss 1, and import A is communicated with outlet C as a result, thereby the pressure in the firing-fighting medium container that links to each other with import A is reduced, and at this moment just can replenish firing-fighting medium in this container, so repeatedly.

Claims

1. alternate type Decompression valves, it is characterized in that: described alternate type Decompression valves is made up of valve body (3) and valve (2); Wherein valve body (3) constitutes by being responsible for (5) and outer pipe (4), the two ends of being responsible for (5) on it are formed with an import (A, B) that can link to each other with two firing-fighting medium containers respectively respectively, the end of outer pipe (4) then has an outlet (C), and is positioned on the inboard person in charge (5) inner peripheral surface of two imports (A, B) and is formed with an annular boss (1,1 ') respectively; Valve (2) is arranged on the person in charge (5) inside of valve body (3), two ends be formed with respectively one be positioned between import (A, B) and the corresponding annular boss (1,1 ') and the biggest place diameter greater than the door stifled (6,6 ') of the minimum place of annular boss (1,1 ') diameter, and form sealing surface when contacting with annular boss (1,1 ') when door blocks up (6,6 ').