CN203548948U

CN203548948U - Novel container valve for fire extinguishing device of fire detection pipe

Info

Publication number: CN203548948U
Application number: CN201320654327.1U
Authority: CN
Inventors: 吴献琴; 陈秀玉
Original assignee: TIANGUANG FIRE FIGHTING CO Ltd
Current assignee: TIANGUANG FIRE FIGHTING CO Ltd
Priority date: 2013-10-23
Filing date: 2013-10-23
Publication date: 2014-04-16
Anticipated expiration: 2023-10-23

Abstract

The utility model provides a novel container valve for a fire extinguishing device of a fire detection pipe. The novel container valve for the fire extinguishing device of the fire detection pipe comprises a valve body, a valve clack, a valve cover and a gland; therefore the utility model breaks through the structural mode of the traditional container valve of the fire extinguishing device, pressure gas is filled by a fire detection pipe end of the gland and a fire extinguishing agent is filled into a fire extinguishing container by a lower inflating port before use; during use, if the fire detection pipe slowly leaks gas, nitrogen in a lower cavity jacks up a pressure balance piston by a fine hole to be filled into the fire detection pipe; when a fire accident occurs, the fire detection pipe is broken to leak gas, the nitrogen in the fire detection pipe and the upper end of the valve clack is fast leaked, the pressure above the pressure balance piston and the valve clack is fast reduced, the flow of the fine hole cannot meet the flow of leaking, the nitrogen in the lower cavity jacks up the valve clack, and the fire extinguishing agent is carried in the nitrogen to be blown out to extinguish fire. Automatic gas filling of the fire detection pipe is timely efficiently realized, the maintenance cost is low, the performances are stable and reliable, the structure is simple, novel, reasonable and compact, the starting is fast, the fire is timely extinguished and the practicability is strong.

Description

A kind of novel container valve of visiting fire tube fire-fighting equipment

Technical field

The utility model relates to visits fire tube type fire-fighting equipment field, is specifically related to a kind of novel container valve of visiting fire tube fire-fighting equipment.

Background technique

Visiting fire tube fire-fighting equipment has been known, as Chinese utility model patent CN201120045189.8 discloses a kind of spy fire tube automatic fire extinguisher, it comprises extinguishing agent storage bottle, bottle valve, visit fire tube, protected area, described spy fire tube is arranged in described protected area, threeway is equipped with in one end that described spy fire tube exposes to described protected area, wherein two reduction of fractions to a common denominators of described threeway do not connect the spy fire tube at two ends, another crosses inlet ductwork Bonding pressure alarm all, described pressure alarm comprises pressure gauge, pressure switch, sound alarm module, remote alarms Signal interface module, the described inlet ductwork of described pressure alarm is communicated with described pressure gauge successively, pressure switch input end, the output terminal of described pressure switch connects respectively described sound alarm module, remote alarms Signal interface module.The described sound alarm module of described pressure warning unit is connected with test button.

Wherein, bottle valve (vessel valve) in whole fire-fighting equipment in occupation of very important status, the quality of its performance directly affects the performance of whole fire-fighting equipment, Chinese utility model patent CN201120556718.0 discloses a kind of vessel valve structure of visiting fire tube self-starting fire-fighting equipment, vessel valve is communicated with air cylinder, and vessel valve valve body core is valve pocket; Described valve pocket is divided into uuper valve chamber and lower valve chamber, wherein uuper valve chamber comprises bonnet, breaker bolt, epicoele spring, upper valve core, upper seal ring, uuper valve chamber interface, bonnet is installed on valve body top, bonnet top is provided with not threaded mounting hole, breaker bolt is connected with the tapped hole in upper valve core upper cavity by mounting hole, epicoele spring is placed through breaker bolt bottom and top is contained between bonnet lower cavity and upper valve core upper cavity, the long-pending lower surface that is greater than of upper face of upper valve core is amassed, and between upper valve core and valve interior wall, seal ring is installed; Lower valve chamber comprises cavity of resorption spring, lower valve core, lower seal, sealing gasket, lower valve chamber interface, end cap, lower valve core upper-end surface is mounted on upper valve core bottom, between lower valve core and valve interior wall, lower seal is installed, sealing gasket has threaded mounting hole and is connected with lower valve core lower end surface, valve body lower valve chamber bottom is provided with end cap, end cap center drilling is communicated with air cylinder, and cavity of resorption spring top is contained between Yu Dimao upper-end surface, sealing gasket lower end surface; Valve body one side has uuper valve chamber interface, lower valve chamber interface at uuper valve chamber and lower valve chamber respectively, and uuper valve chamber interface is communicated with uuper valve chamber, and lower valve chamber interface is communicated with lower valve chamber, visits fire tube and is connected with lower valve chamber interface with uuper valve chamber interface.The thrust of described epicoele spring is greater than the thrust of cavity of resorption spring.Sectional area in the middle of described lower valve core is half of two ends.Described uuper valve chamber interface outlet port is provided with pressure gauge.Described upper seal ring and lower seal have respectively twice.The vessel valve structure of this model utility has higher validity, reliability, and air-flow stable output, there will not be blockage.But in actual use, in order to keep visiting the normal working of fire tube, guarantee that stability and the opening by mistake of anti-locking system of system opened, need maintenance man's running check.When visiting fire tube place pressure drop, need manually to visiting the pressure at fire tube place, to carry out ftercompction, maintenance cost is high, and promptness can not guarantee, if visit the long-time gas leakage of fire tube, will cause opening by mistake of vessel valve to open, waste extinguishing agent and bring many troubles to people, having reduced stability and the reliability of whole fire-fighting equipment; Because spring is easily damaged parts, after long-term use, be easy to damage because of corrosion etc., the usability of whole fire-fighting equipment is reduced, shorten working life; Total is complicated, not compact, shortcoming rationality, processes and assemble loaded down with trivial details, and mobile reactant is slow, puts out a fire not prompt enough, and practicability is not enough, haves much room for improvement.

Given this, this case inventor further investigate the problems referred to above, then has this case to produce.

Model utility content

The purpose of this utility model be to provide a kind of can be in time, efficient realize visit fire tube automatic inflating device, maintain the novel container valve of the spy fire tube fire-fighting equipment of normal working, can greatly reduce the maintenance costs such as hand inspection, tonifying Qi; Selfsealings are strong, can not open by mistake and open, stable and reliable for performance, and do not use the easily damaged partss such as spring, safety and long service life; Simple in structure, new reasonable and compact, processing is simple, easy to assembly, starts fast, and fire extinguishing in time, practical.

In order to achieve the above object, the utility model adopts such technological scheme:

Visit a novel container valve for fire tube fire-fighting equipment, comprise valve body, flap, valve gap and the gland being connected with spy fire tube; Described valve body has the cavity of resorption that is connected with foamite container and has lower inflation inlet, and has the epicoele of extinguishing agent spout; Described valve bonnet seal is connected in the upper end of described valve body; Described gland seal is connected in the upper end of described valve gap; The coaxial downward-extension of described valve gap has the extension part in described epicoele, described flap slipper seal is sheathed between the chamber wall of described extension part and described epicoele, the bottom gear of described flap is located between described cavity of resorption and described extinguishing agent spout, the lower end mouth of described flap is communicated with described cavity of resorption, between described epicoele and described cavity of resorption, be formed with transition shoulder one, the corresponding sealing contact of transition shoulder one therewith of the lower end of described flap; Described valve gap has mouth upward and is undertaken in the cavity volume of described gland lower end, sinks to described extension part at the bottom of the chamber of described cavity volume, in described cavity volume, is equipped with pressure balancing piston; Described gland is formed with and is communicated with the first through hole of visiting fire tube and described cavity volume; The upper end of described cavity volume in the corresponding described flap of the chamber at described extension part place wall is formed with the second through hole; Described pressure balancing piston is formed with the third through-hole that is communicated with described the first through hole and the second through hole; The bottom of described extension part is formed with the pore that is communicated with described cavity volume and described flap hollow cavity; Described pressure balancing piston contacts with the corresponding sealing of upper end-hole of described pore; The cross-section area of described cavity of resorption is greater than the cross-section area at the hollow cavity place of described flap.

The lower end mouth of above-mentioned pore is provided with the filtrating equipment that filters out solid impurity.

The lower end mouth edge of above-mentioned pore is formed with coaxial step hole, and this step hole comprises top bar hole and the hole of getting out of a predicament or an embarrassing situation in below in top, described in top bar hole and get out of a predicament or an embarrassing situation and be formed with transition shoulder two between hole; Above-mentioned filtrating equipment comprises filter screen, briquetting and locking block; Described filter screen covers in the lower end mouth in the described hole of topping bar, and is pressed in from the bottom to top on described transition shoulder two by described briquetting; Described locking block is from the bottom to top by described filter screen and briquetting locking; Described briquetting has the fourth hole corresponding with the described hole of topping bar, and described locking block has the fifth hole corresponding with described fourth hole.

Above-mentioned pressure balancing piston comprises particle size epimere and the thin footpath hypomere corresponding with above-mentioned the second through hole, between the chamber wall of described thin footpath hypomere and above-mentioned cavity volume, is formed with gap; Above-mentioned third through-hole comprises the vertical core section that is passed to described thin footpath hypomere by described pressure balancing piston upper end, and is communicated with the cross-drilled hole section in vertical core section and described gap.

A plurality of above-mentioned the second through hole uniform ring are located on the chamber wall of above-mentioned cavity volume; A plurality of above-mentioned cross-drilled hole sections uniform ring centered by above-mentioned vertical core section is established.

Above-mentioned particle size epimere comprises the first particle size epimere thicker in top, and in below thinner the second particle size epimere; Above-mentioned cavity volume comprises the particle size cavity volume section matching with described the first particle size epimere, and the thin footpath cavity volume section matching with described the second particle size epimere; Described the first particle size epimere contacts with the chamber wall sealing of described particle size cavity volume section by O shape circle; Described the second particle size epimere contacts with the chamber wall sealing of described thin footpath cavity volume section by O shape circle; The chamber wall of described particle size cavity volume section is formed with the vent being in communication with the outside.

Above-mentioned extension part comprises thin footpath epimere and particle size hypomere; Above-mentioned flap comprises flap particle size epimere, flap stage casing, thin footpath and flap particle size hypomere; Described particle size hypomere contacts with the hollow cavity chamber wall sealing of described flap by O shape circle; Described flap particle size epimere contacts with the chamber wall sealing of above-mentioned epicoele by O shape circle.

The lower end of above-mentioned pressure balancing piston contacts with flange one sealing that is formed at the upper end-hole edge of above-mentioned pore by sealing gasket; The lower end of above-mentioned flap contacts with flange two sealings that are formed on above-mentioned transition shoulder one by seal washer.

Above-mentioned lower inflation inlet is equipped with inflation spool one, and described lower inflation inlet is formed with the containing groove one that mates from outside to inside accommodating described inflation spool one; Described inflation spool one has the main gas charge hole one of extending from outside to inside, and the inner in vertical connection main gas charge hole one is to the secondary air-filled pore one of described containing groove one cell wall; The inner of described inflation spool one is level and smooth taper, and the inner of the bottom land of described containing groove one and described inflation spool one matches; The outer movable sheath of described inflation spool one is provided with locking nut one, and the outer end of described locking nut one is snapped on described inflation spool one, and the outer side wall of inner and described containing groove one is threaded.

Above-mentioned the first through hole is equipped with inflation spool two, and described the first through hole is formed with the containing groove two that mates from outside to inside accommodating described inflation spool two; Described inflation spool two has the main gas charge hole two of extending from outside to inside, and the inner in vertical connection main gas charge hole two is to the secondary air-filled pore two of described containing groove two cell walls; The inner of described inflation spool two is level and smooth taper, and the inner of the bottom land of described containing groove two and described inflation spool two matches; The outer movable sheath of described inflation spool two is provided with locking nut two, and the outer end of described locking nut two is snapped on described inflation spool two, and the outer side wall of inner and described containing groove two is threaded.

Adopt after technique scheme, the novel container valve of spy fire tube fire-fighting equipment of the present utility model, break through the structural form of traditional fire-fighting equipment vessel valve, before use, comprise visiting fire tube end filling pressure gas, foamite container being filled to two operations of extinguishing agent.One, to visiting fire tube end filling pressure gas, the port being connected with spy fire tube by gland fills the nitrogen of authorized pressure, nitrogen enters in cavity volume by the first through hole of gland, third through-hole by pressure balancing piston enters in the appearance air cavity of epicoele in flap upper end via the second through hole again, pressure balancing piston under the pressure-acting of nitrogen with close contact at the bottom of the chamber of cavity volume, by the upper end-hole sealing of pore, flap under the pressure-acting of nitrogen with transition shoulder one close contact, reach sealing, cavity of resorption and extinguishing agent spout are effectively blocked; Two, foamite container is filled to extinguishing agent, after spy fire tube end filling pressure gas is completed, by lower inflation inlet via cavity of resorption to the extinguishing agent (as heptafluoro-propane) that fills established amount in foamite container, then by lower inflation inlet via cavity of resorption to the nitrogen that fills authorized pressure in foamite container.In use, to visit fire tube is communicated with gland, when visiting while fire tube or itself and being connected of gland etc. locating slowly to leak gas, in the situation that guaranteeing that nitrogen jack-up flap is more difficult than jack-up pressure balancing piston, because the flow of pore just can meet the flow of slow gas leakage, nitrogen in cavity of resorption can be first via pore by pressure balancing piston jack-up, to visit fire tube and be communicated with it respectively hold slowly tonifying Qi in air cavity, guarantee to visit the normal working of fire tube, realize the object of automatic inflating device, and opening by mistake of extinguishing agent spout can not occurred flap jack-up to, do not open; Work as breaking out of fire, when spy fire tube is subject to thermal fracture gas leakage, the rapid leakage of nitrogen meeting that visit in fire tube and flap upper end etc. is connected and locates, the pressure of pressure balancing piston and flap top reduces rapidly, and owing to visiting the cross-section area of the area of fire tube breach much larger than pore, the flow of pore cannot meet the flow of leakage, flap loses the balance of downforce, the nitrogen of cavity of resorption can carried flap jack-up secretly extinguishing agent by extinguishing agent spout ejection fire extinguishing, realizes the unlatching of vessel valve.Compared with prior art, the novel container valve of spy fire tube fire-fighting equipment of the present utility model, its can realize visit fire tube automatic inflating device, maintain normal working, in time, efficient, and can greatly reduce the maintenance costs such as hand inspection, tonifying Qi; Selfsealings are strong, can not open by mistake and open, stable and reliable for performance, and do not use the easily damaged partss such as spring, safety and long service life; Simple in structure, new reasonable and compact, processing is simple, easy to assembly, starts fast, and fire extinguishing in time, practical.

Accompanying drawing explanation

Fig. 1 is sectional structure schematic diagram of the present utility model;

Fig. 2 be in Fig. 1 A-A to sectional structure schematic diagram;

Fig. 3 is the structure for amplifying schematic diagram of local B in Fig. 1;

Fig. 4 is the sectional structure schematic diagram of pressure balancing piston.

In figure:

1-valve body 11-cavity of resorption

Inflation inlet 12-epicoele under 111-

121-extinguishing agent spout 13-transition shoulder one

131-flange two

2-flap 21-flap particle size epimere

Stage casing, the thin footpath of 22-flap 23-flap particle size hypomere

24-seal washer

3-valve gap 31-extension part

311-pore 312-step hole

The 3121-hole 3122-hole of getting out of a predicament or an embarrassing situation of topping bar

The 3123-transition shoulder two thin footpath of 313-epimeres

314-particle size hypomere 315-flange one

32-cavity volume 321-particle size cavity volume section

The thin footpath of 322-cavity volume section 323-vent

33-the second through hole

4-gland 41-the first through hole

5-pressure balancing piston 51-third through-hole

511-vertical core section 512-cross-drilled hole section

52-particle size epimere 521-the first particle size epimere

522-the second thin footpath of particle size epimere 53-hypomere

54-sealing gasket

6-filtrating equipment 61-filter screen

62-briquetting 621-fourth hole

63-locking block 631-fifth hole

7-O shape circle

8-inflates spool one 81-main gas charge hole one

The secondary air-filled pore one 83-locking nut one of 82-

9-inflates spool two 91-main gas charge holes two

The secondary air-filled pore two 93-locking nuts two of 92-

10-safety relief device 20-pressure indicator

Embodiment

In order further to explain, be described in detail the technical solution of the utility model below by specific embodiment.

A kind of novel container valve of visiting fire tube fire-fighting equipment of the present utility model, as Figure 1-4, comprises valve body 1, flap 2, valve gap 3 and the gland 4 being connected with spy fire tube (not shown).

Valve body 1 has the cavity of resorption 11 that is connected with foamite container (not shown) and has lower inflation inlet 111, and has the epicoele 12 of extinguishing agent spout 121; Valve gap 3 is connected in the upper end of valve body 1 with the fast way of sealing; Gland 4 is connected in the upper end of valve gap 3 with the fast way of sealing; The coaxial downward-extension of valve gap 3 has the extension part 31 in epicoele 12, flap 2 with slidably and sealing mode be sheathed between extension part 31 and the chamber wall of epicoele 12, the bottom gear of flap 2 is located between cavity of resorption 11 and extinguishing agent spout 121, the lower end mouth of flap 2 is communicated with cavity of resorption 11, be that epicoele 12 is communicated with cavity of resorption 11, between epicoele 12 and cavity of resorption 11, be formed with transition shoulder 1, the corresponding sealing contact of transition shoulder 1 therewith of the lower end of flap 2, realizes flap 2 by cavity of resorption 11 and the efficient sealed isolation of extinguishing agent spout 121; Valve gap 3 has mouth upward and is undertaken in the cavity volume 32 of gland 4 lower ends, sinks to extension part 31 at the bottom of the chamber of cavity volume 32, at the bottom of the chamber of cavity volume 32, extends in extension part 31, is equipped with pressure balancing piston 5 in cavity volume 32; Gland 4 is formed with and is communicated with the first through hole 41 of visiting fire tube and cavity volume 32; The upper end of cavity volume 32 in the corresponding flap 2 of the chamber at extension part 31 places wall is formed with the second through hole 33; Pressure balancing piston 5 is formed with the third through-hole 51 that is communicated with the first through hole 41 and the second through hole 33; The bottom of extension part 31 is formed with the pore (cross-section area that the cross-section area of pore 311 is located much smaller than the first through hole 41, the second through hole 33 and third through-hole 51 etc. that is communicated with cavity volume 32 and flap 2 hollow cavities, being tens or 1/tens of rear three's cross-section area, is millimeter magnitude) 311; Pressure balancing piston 5 contacts with the corresponding sealing of upper end-hole of pore 311; The cross-section area of cavity of resorption 11 is greater than the cross-section area at the hollow cavity place of flap 2, to guarantee that pressed gas in cavity of resorption 11 has driving pressure upwards to flap 2 as nitrogen.The utility model before use, comprises spy fire tube end filling pressure gas to gland 4, foamite container is filled to two operations of extinguishing agent.One, to visiting fire tube end filling pressure gas, the port being connected with spy fire tube by gland 4 fills the nitrogen (also can select as requested other suitable stabilizing gas) of authorized pressure, nitrogen enters in cavity volume 32 by the first through hole 41 of gland 4, third through-hole 51 by pressure balancing piston 5 enters in the appearance air cavity of epicoele 12 in flap 2 upper ends via the second through hole 33 again, pressure balancing piston 5 under the pressure-acting of nitrogen with close contact at the bottom of the chamber of cavity volume 32, by the upper end-hole sealing of pore 311, flap 2 under the pressure-acting of nitrogen with transition shoulder one 13 close contacts, reach sealing, cavity of resorption 11 and extinguishing agent spout 121 are effectively blocked, two, foamite container is filled to extinguishing agent, after the spy fire tube end filling pressure gas of gland 4 is completed, by lower inflation inlet 111 via cavity of resorption 11 to the extinguishing agent (as heptafluoro-propane) that fills established amount in foamite container, then by lower inflation inlet 111 via cavity of resorption 11 to the nitrogen (also can select as requested other suitable stabilizing gas) that fills authorized pressure in foamite container.The utility model in use, to visit fire tube is communicated with gland 4, when visiting while fire tube or itself and being connected of gland 4 etc. locating slowly to leak gas, in the situation that guaranteeing that nitrogen jack-up flap 2 is more difficult than jack-up pressure balancing piston 5, because the flow of pore 311 just can meet the flow of slow gas leakage, nitrogen in cavity of resorption 11 can be first via pore 311 by pressure balancing piston 5 jack-up, to visit fire tube and be communicated with it respectively hold slowly tonifying Qi in air cavity, guarantee to visit the normal working of fire tube, realize the object of automatic inflating device, and opening by mistake of extinguishing agent spout 121 can not occurred flap 2 jack-up to, do not open, work as breaking out of fire, when spy fire tube is subject to thermal fracture gas leakage, the rapid leakage of nitrogen meeting that visit in fire tube and flap 2 upper ends etc. is connected and locates, the pressure of pressure balancing piston 5 and flap 2 tops reduces rapidly, and owing to visiting the cross-section area of the area of fire tube breach much larger than pore 311, the flow of pore 311 cannot meet the flow of leakage, flap 2 loses the balance of downforce, the nitrogen of cavity of resorption 11 can carried flap 2 jack-up secretly extinguishing agent by the 121 ejection fire extinguishings of extinguishing agent spout, realizes the unlatching of vessel valve, the utility model in practice, also be equipped with safety relief device 10, safety relief device 10 has safety blasting diaphragm, when the pressure in foamite container reaches the bursting pressure of safety blasting diaphragm, safety blasting rupture of diaphragm, extinguishing agent is discharged by safety relief device, plays the blast of foamite container, protection people life property safety's the effect of preventing.

Preferably, the lower end mouth of pore 311 is provided with and filters out the fixedly filtrating equipment 6 of impurity (as the impurity that drops in foamite container or deposit), be before filtrating equipment 6 can the nitrogen in foamite container enters pore 311, entrained solid contaminant filter in nitrogen is fallen, can effectively prevent that pore 311 from being stopped up by solid impurity and losing usefulness.

Preferably, the lower end mouth edge of pore 311 is formed with coaxial step hole 312, this step hole 312 comprises top bar hole 3121 and the hole 3122 of getting out of a predicament or an embarrassing situation in below in top, top bar hole 3121 and get out of a predicament or an embarrassing situation and be formed with transition shoulder 2 3123 between hole 3122, whole step hole 312 mouth downs, the hole 3122 of getting out of a predicament or an embarrassing situation is larger, and the hole 3121 of topping bar is less; Filtrating equipment 6 comprises filter screen 61, briquetting 62 and locking block 63; Filter screen 61 covers in the lower end mouth in the hole 3121 of topping bar, and is pressed in from the bottom to top on transition shoulder 2 3123 by briquetting 62; Locking block 63 is from the bottom to top by filter screen 61 and briquetting 62 lockings, concrete structure can be, and locking block 63 is formed with outside thread, and the hole 3122 of getting out of a predicament or an embarrassing situation is formed with the internal thread of coupling, locking block 63 can, by the cooperation of described outside thread and internal thread, upwards be locked filter screen 61 and briquetting 62; Briquetting 62 has the fourth hole 621 corresponding with the hole 3121 of topping bar, locking block 63 has the fifth hole corresponding with fourth hole 621 631, fourth hole 621 and fifth hole 631 are jointly by pore 311, filter screen 61 and cavity of resorption 11 conductings, and the lower end of locking block 63 flushes with the lower end of pressure balancing piston 5, and total is compacter.

Preferably, pressure balancing piston 5 comprises particle size epimere 52 and the thin footpath hypomere 53 corresponding with the second through hole 33, between thin footpath hypomere 53 and the chamber wall of cavity volume 32, is formed with gap, and this gap can guarantee that third through-hole 51 is connected with the second through hole 33; Third through-hole 51 comprises the vertical core section 511 that is passed to thin footpath hypomere 53 by pressure balancing piston 5 upper ends, with the cross-drilled hole section 512 that is communicated with vertical core section 511 and described gap, be that vertical core section 511 is formed in pressure balancing piston 5 up and down, and upper end-hole is communicated with the first through hole 41, cross-drilled hole section 512 is communicated with vertical core section 511 with described gap, and then be communicated with the second through hole 33, total is compact and reasonable more.

In order to make total more balanced, strengthen connectedness, improve service behaviour, preferably, a plurality of the second through hole 33 uniform ring are located on the chamber wall of cavity volume 32; A plurality of cross-drilled hole sections 512 uniform ring centered by vertical core section 511 is established.

Preferably, particle size epimere 52 comprises the first particle size epimere 521 thicker in top, and in below thinner the second particle size epimere 522; Cavity volume 32 comprises the particle size cavity volume section 321 matching with the first particle size epimere 521, and the thin footpath cavity volume section 322 matching with the second particle size epimere 522; The first particle size epimere 521 contacts with the chamber wall sealing of particle size cavity volume section 321 by O shape circle 7; The second particle size epimere 522 contacts with the chamber wall sealing of thin footpath cavity volume section 322 by O shape circle 7; The chamber wall of particle size cavity volume section 321 is formed with the vent 323 being in communication with the outside, two O shape circles 7 can guarantee the sealing of pressure balancing piston 5 and valve gap 3, and pressure balancing piston 5 is played to leading role, vent 323 can guarantee between two O shapes circles 7 and extraneous connectedness, be convenient to air-flow conducting, strengthen the fluency of pressure balancing piston 5 motions.

Preferably, extension part 31 comprises thin footpath epimere 313 and particle size hypomere 314; Flap 2 comprises flap particle size epimere 21, stage casing, the thin footpath of flap 22 and flap particle size hypomere 23; Particle size hypomere 314 contacts with the hollow cavity chamber wall sealing of flap 2 by O shape circle 7; Flap particle size epimere 21 contact with the chamber wall sealing of epicoele 12 by O shape circle 7, and the appearance air cavity above flap 2 is communicated with the second through hole 33 with epicoele 12, and then respectively holds the continuous effect to flap 2 of nitrogen in air cavity, stable work in work above assurance.

For specific implementation pressure balancing piston 5 contacts with the sealing of pore 311 upper end-hole, the lower end of flap 2 contacts with the sealing of transition shoulder 1, preferably, the lower end of pressure balancing piston 5 contacts with flange one 315 sealings that are formed at the upper end-hole edge of pore 311 by sealing gasket 54; The lower end of flap 2 contacts with flange 2 131 sealings that are formed on transition shoulder 1 by seal washer 24.

Preferably, lower inflation inlet 111 is equipped with inflation spool 1, and lower inflation inlet 111 is formed with the containing groove one that mates from outside to inside accommodating inflation spool 1; Inflation spool 1 has the main gas charge hole 1 of extending from outside to inside, and the inner in vertical connection main gas charge hole 1 is to the secondary air-filled pore 1 of described containing groove one cell wall; The inner of inflation spool 1 is level and smooth spherical, and the bottom land of described containing groove one matches with the inner of inflation spool 1; The outer movable sheath of inflation spool 1 is provided with locking nut 1, and the outer end of locking nut 1 is snapped on inflation spool 1, and the outer side wall of inner and described containing groove one is threaded.When foamite container is filled to extinguishing agent and nitrogen, external port in main gas charge hole 1 connects gas-charging connection, unscrew (can not screw off) locking nut 1, the containing groove one of whole inflation spool 1 and lower inflation inlet 111 is close contact no longer, secondary air-filled pore 1 is communicated with main gas charge hole 1 with lower inflation inlet 111, now open gas-charging connection and can fill extinguishing agent or nitrogen to foamite container, after having filled, only need screw locking nut 1, locking nut 1 is locked together inflation spool 1 and lower inflation inlet 111 by buckle place, the inner of inflation spool 1 can fit tightly with the containing groove one of lower inflation inlet 111, and then sealing.Also can be as required, the external port in main gas charge hole 1 connects pressure indicator 20, now needs to unscrew locking nut 1, and lower inflation inlet 111 is communicated with pressure indicator 20, realizes the Pressure testing in foamite container.

Preferably, the first through hole 41 is equipped with inflation spool the 29, first through hole 41 and is formed with the containing groove two that mates from outside to inside accommodating inflation spool 29; Inflation spool 29 has the main gas charge hole 2 91 of extending from outside to inside, and the inner in vertical connection main gas charge hole 2 91 is to the secondary air-filled pore 2 92 of described containing groove two cell walls; The inner of inflation spool 29 is level and smooth spherical, and the bottom land of described containing groove two matches with the inner of inflation spool 29; The outer movable sheath of inflation spool 29 is provided with locking nut 2 93, and the outer end of locking nut 2 93 is snapped on inflation spool 29, and the outer side wall of inner and described containing groove two is threaded.When spy fire tube end filling pressure gas to gland 4, external port in main gas charge hole 2 91 connects gas-charging connection, unscrew (can not screw off) locking nut 2 93, the containing groove two of whole inflation spool 29 and the first through hole 41 is close contact no longer, secondary air-filled pore 2 92 is communicated with main gas charge hole 2 91 with the first through hole 41, now opening gas-charging connection can be to the spy fire tube end filling pressure gas (as nitrogen) to gland 4, after having filled, only need screw locking nut 2 93, locking nut 2 93 is locked together inflation spool 29 and the first through hole 41 by buckle place, the inner of inflation spool 29 can fit tightly with the containing groove two of the first through hole 41, and then sealing.

The equilibrium principle of pressure balancing piston 5:

When the upper end-hole of pressure balancing piston 5 and pore 311 is during in sealing threshold state, ignore the impact of gravity and frictional force,

By equilibrium principle F _close=F _{close down},

\frac{π}{4} \cdot {D_{3}}^{2} \cdot P_{2} + \frac{π}{4} \cdot ({D_{2}}^{2} - {D_{3}}^{2}) \cdot P_{1} = \frac{π}{4} \cdot {D_{1}}^{2} \cdot P_{1};

F _closefor being subject to nitrogen, pressure balancing piston 5 upwards pressure, F _{close down}for pressure balancing piston 5 is subject to the downward pressure of nitrogen, D ₁for the internal diameter of valve gap 3 at particle size cavity volume section 321 places, D ₂for the internal diameter of valve gap 3 at cavity volume section 322 places, thin footpath, D ₃for the internal diameter of flange 1, P ₁for visiting the air pressure in fire tube, P ₂for the air pressure in foamite container.

D ₁sectional area is much larger than D ₂with D ₃between annulus area, work as P ₁during reduction, F _{close down}< F _close _on, the total (F of making a concerted effort making progress _close-F _{close down}) overcome the frictional force sum that the gravity of pressure balancing piston 5 and its O shape are enclosed the places such as 7, make pressure balancing piston move up to gland 4 lower end surfaces, air supply passage pore 311 is opened, and to visiting the appearance air cavity of locating in fire tube and flap 2 upper ends etc., carries out tonifying Qi pressurising; Work as F _close _under> F _closetime, downward total (F that makes a concerted effort _{close down}-F _close) the O shape that overcomes pressure balancing piston 5 encloses the frictional force sum at the places such as 7, and pressure balancing piston 5 is moved downward, and closes air supply passage pore 311, pressure balancing piston 5 with the upper end-hole of pore 311 in sealing state.

The equilibrium principle of flap 2:

When flap 2 during in sealing threshold state, is ignored the impact of gravity and frictional force with transition shoulder 1,

By equilibrium principle F _under=F _on,

\frac{π}{4} \cdot ({D_{4}}^{2} - {D_{5}}^{2}) \cdot P_{1} = \frac{π}{4} \cdot ({D_{6}}^{2} - {D_{5}}^{2}) \cdot P_{2};

F _onfor being subject to nitrogen, flap 2 upwards pressure, F _underfor flap 2 is subject to the downward pressure of nitrogen, D ₄for the internal diameter of epicoele 12, D ₅for the internal diameter of flap 2, D ₆for the internal diameter of cavity of resorption 11, P ₁for visiting the air pressure in fire tube, P ₂for the air pressure in foamite container.

Work as F _under>=F _ontime, flap 2 can effective sealing.Because P2 is definite value (determining according to the model of device), D ₄, D ₆in situation for definite value (depending primarily on the latus rectum of valve), P ₁size by (D ₄ ²-D ₅ ²) and (D ₆ ²-D ₅ ²) decision, i.e. P ₁size depend on D ₅.D ₆and D ₅difference littlely (note: D ₅be less than D ₆, otherwise main valve clack cannot be opened), P ₁less.

Work as F _under< F _ontime, flap 2 is opened, the 121 ejection extinguishing agent fire extinguishings of extinguishing agent spout.

The novel container valve of spy fire tube fire-fighting equipment of the present utility model, between valve gap and valve body, between gland and valve gap, between inflation spool two and containing groove two, all can be realized and being tightly connected by O shape circle between inflation spool one and containing groove one; The concrete form of locking nut two and locking nut one can be adjusted and design according to actual requirement; The parameters such as the concrete shape in secondary air-filled pore two, main gas charge hole two, secondary air-filled pore one and main gas charge hole one, size can be adjusted and design according to actual requirement; The concrete profile of inflation spool two and inflation spool one, size etc., and the matching relationship of containing groove two and containing groove one and inflation spool two and inflation spool one can be adjusted and design according to actual requirement; Seal washer and sealing gasket preferably adopt the form being embedded in corresponding position, the concrete Connecting format of the two and corresponding position also can be adjusted and design according to actual requirement, and concrete shape, size and the material etc. of seal washer and sealing gasket all can be adjusted and design according to actual requirement certainly; Flange two and flange one are guaranteeing respectively to match sealing contact in the situation that with seal washer and sealing gasket, and the internal-and external diameter of flange two and flange one and protrusion height etc. all can be adjusted and design according to actual requirement; The concrete form of extension part and flap, and the form that is mutually sealed and matched of the two also can be adjusted and design according to actual requirement; The form of vent can be adjusted and design according to actual requirement; The concrete form of pressure balancing piston and valve gap, and the form that is mutually sealed and matched of the two also can be adjusted and design according to actual requirement; The concrete quantity of the second through hole and cross-drilled hole section and corresponding form can be adjusted and design according to actual requirement; The concrete form of pore and filtrating equipment, and the form that cooperatively interacts of the two etc. also can be adjusted and design according to actual requirement; The concrete form of safety relief device can be existing safety relief device form, also can adjust and design according to actual requirement; The concrete form of pressure indicator can be existing pressure indicator form, also can adjust and design according to actual requirement.

Product form of the present utility model is not limited to this case diagram and embodiment, and anyone carries out suitable variation or the modification of similar thinking to it, all should be considered as not departing from patent category of the present utility model.

Claims

1. a novel container valve of visiting fire tube fire-fighting equipment, is characterized in that: comprise valve body, flap, valve gap and the gland being connected with spy fire tube; Described valve body has the cavity of resorption that is connected with foamite container and has lower inflation inlet, and has the epicoele of extinguishing agent spout; Described valve bonnet seal is connected in the upper end of described valve body; Described gland seal is connected in the upper end of described valve gap; The coaxial downward-extension of described valve gap has the extension part in described epicoele, described flap slipper seal is sheathed between the chamber wall of described extension part and described epicoele, the bottom gear of described flap is located between described cavity of resorption and described extinguishing agent spout, the lower end mouth of described flap is communicated with described cavity of resorption, between described epicoele and described cavity of resorption, be formed with transition shoulder one, the corresponding sealing contact of transition shoulder one therewith of the lower end of described flap; Described valve gap has mouth upward and is undertaken in the cavity volume of described gland lower end, sinks to described extension part at the bottom of the chamber of described cavity volume, in described cavity volume, is equipped with pressure balancing piston; Described gland is formed with and is communicated with the first through hole of visiting fire tube and described cavity volume; The upper end of described cavity volume in the corresponding described flap of the chamber at described extension part place wall is formed with the second through hole; Described pressure balancing piston is formed with the third through-hole that is communicated with described the first through hole and the second through hole; The bottom of described extension part is formed with the pore that is communicated with described cavity volume and described flap hollow cavity; Described pressure balancing piston contacts with the corresponding sealing of upper end-hole of described pore; The cross-section area of described cavity of resorption is greater than the cross-section area at the hollow cavity place of described flap.

2. a kind of novel container valve of visiting fire tube fire-fighting equipment according to claim 1, is characterized in that: the lower end mouth of above-mentioned pore is provided with the filtrating equipment that filters out solid impurity.

3. a kind of novel container valve of visiting fire tube fire-fighting equipment according to claim 2, it is characterized in that: the lower end mouth edge of above-mentioned pore is formed with coaxial step hole, this step hole comprises top bar hole and the hole of getting out of a predicament or an embarrassing situation in below in top, described in top bar hole and get out of a predicament or an embarrassing situation and be formed with transition shoulder two between hole; Above-mentioned filtrating equipment comprises filter screen, briquetting and locking block; Described filter screen covers in the lower end mouth in the described hole of topping bar, and is pressed in from the bottom to top on described transition shoulder two by described briquetting; Described locking block is from the bottom to top by described filter screen and briquetting locking; Described briquetting has the fourth hole corresponding with the described hole of topping bar, and described locking block has the fifth hole corresponding with described fourth hole.

4. a kind of novel container valve of visiting fire tube fire-fighting equipment according to claim 3, it is characterized in that: above-mentioned pressure balancing piston comprises particle size epimere and the thin footpath hypomere corresponding with above-mentioned the second through hole, between the chamber wall of described thin footpath hypomere and above-mentioned cavity volume, is formed with gap; Above-mentioned third through-hole comprises the vertical core section that is passed to described thin footpath hypomere by described pressure balancing piston upper end, and is communicated with the cross-drilled hole section in vertical core section and described gap.

5. a kind of novel container valve of visiting fire tube fire-fighting equipment according to claim 4, is characterized in that: a plurality of above-mentioned the second through hole uniform ring are located on the chamber wall of above-mentioned cavity volume; A plurality of above-mentioned cross-drilled hole sections uniform ring centered by above-mentioned vertical core section is established.

6. a kind of novel container valve of visiting fire tube fire-fighting equipment according to claim 5, is characterized in that: above-mentioned particle size epimere comprises the first particle size epimere thicker in top, and in below thinner the second particle size epimere; Above-mentioned cavity volume comprises the particle size cavity volume section matching with described the first particle size epimere, and the thin footpath cavity volume section matching with described the second particle size epimere; Described the first particle size epimere contacts with the chamber wall sealing of described particle size cavity volume section by O shape circle; Described the second particle size epimere contacts with the chamber wall sealing of described thin footpath cavity volume section by O shape circle; The chamber wall of described particle size cavity volume section is formed with the vent being in communication with the outside.

7. a kind of novel container valve of visiting fire tube fire-fighting equipment according to claim 5, is characterized in that: above-mentioned extension part comprises thin footpath epimere and particle size hypomere; Above-mentioned flap comprises flap particle size epimere, flap stage casing, thin footpath and flap particle size hypomere; Described particle size hypomere contacts with the hollow cavity chamber wall sealing of described flap by O shape circle; Described flap particle size epimere contacts with the chamber wall sealing of above-mentioned epicoele by O shape circle.

8. a kind of novel container valve of visiting fire tube fire-fighting equipment according to claim 7, is characterized in that: the lower end of above-mentioned pressure balancing piston contacts with flange one sealing that is formed at the upper end-hole edge of above-mentioned pore by sealing gasket; The lower end of above-mentioned flap contacts with flange two sealings that are formed on above-mentioned transition shoulder one by seal washer.

9. according to a kind of novel container valve of visiting fire tube fire-fighting equipment described in any one in claim 1-4 and 6-8, it is characterized in that: above-mentioned lower inflation inlet is equipped with inflation spool one, and described lower inflation inlet is formed with the containing groove one that mates from outside to inside accommodating described inflation spool one; Described inflation spool one has the main gas charge hole one of extending from outside to inside, and the inner in vertical connection main gas charge hole one is to the secondary air-filled pore one of described containing groove one cell wall; The inner of described inflation spool one is level and smooth taper, and the inner of the bottom land of described containing groove one and described inflation spool one matches; The outer movable sheath of described inflation spool one is provided with locking nut one, and the outer end of described locking nut one is snapped on described inflation spool one, and the outer side wall of inner and described containing groove one is threaded.

10. a kind of novel container valve of visiting fire tube fire-fighting equipment according to claim 9, is characterized in that: above-mentioned the first through hole is equipped with inflation spool two, and described the first through hole is formed with the containing groove two that mates from outside to inside accommodating described inflation spool two; Described inflation spool two has the main gas charge hole two of extending from outside to inside, and the inner in vertical connection main gas charge hole two is to the secondary air-filled pore two of described containing groove two cell walls; The inner of described inflation spool two is level and smooth taper, and the inner of the bottom land of described containing groove two and described inflation spool two matches; The outer movable sheath of described inflation spool two is provided with locking nut two, and the outer end of described locking nut two is snapped on described inflation spool two, and the outer side wall of inner and described containing groove two is threaded.