CN207804827U - A kind of explosion suppression system using vacuum anti-explosion - Google Patents

Abstract

The utility model discloses a kind of dust explosion suppression device, especially a kind of explosion suppression systems using vacuum anti-explosion.The utility model includes inner tube, said inner tube includes the gas access being sequentially communicated, interlude and gas vent, and the gas vent is connected to gas reception device, and said inner tube housing is coaxially provided with outer tube, it is cavity between the outer tube and inner tube, vacuum setting in the cavity.The utility model it is datonation-inhibition simple in structure, electronic device is used only as auxiliary device, will not lead to not because of service interruption or inductor ineffective equal individual parts error datonation-inhibition, while reflection is exceedingly fast, and does not have any delay.

Description

A kind of explosion suppression system using vacuum anti-explosion

Technical field

The utility model is related to a kind of dust explosion suppression device, especially a kind of explosion suppression systems using vacuum anti-explosion.

Background technology

Dust explosion refers to combustible dust within the scope of explosion limit, encounters heat source (open fire or high temperature), and flame moment passes It is sowed at entire mixed dust space, chemical reaction velocity is exceedingly fast, while discharging a large amount of heat, forms very high temperature and prodigious Pressure, the energy of system are converted into the radiation of mechanical energy and light and heat, have very strong destructive power.

In the industrial production, it usually needs by dust by pipeline, if combustible dust is with concentration appropriate at this time It suspends in air, forms dust cloud, while having sufficient air and oxidant, it is easy to cause dust explosion, therefore usually It is designed with explosion suppression device.

After existing explosion suppression device generally use sensor detection, explosion suppressor is transmitted a signal to by electric wire, is then pressed down Quick-fried device progress is datonation-inhibition, is either directly separated by partition board but the former is after situation occur in sensor or electric wire etc., explosion suppressor is then It can not work, and general operating mode is complex, which, which cannot can be regarded as, to occur；Even if the latter's partition board separates, partition board itself The high temperature of the gas separated may be passed, light, make to which the dusty gas not being ignited behind partition board will be fired It is invalid to separate.

Since operating mode is complex in actual use, it is sometimes necessary to work, and pass under some narrow, narrow environment Explosion suppressor unite due to Explosion suppressant to be loaded so that it has certain occupancy volume, causes to conflict with environment.

Utility model content

The purpose of this utility model is that：In view of the above-mentioned problems, the utility model provides and a kind of not using electronic equipment The datonation-inhibition datonation-inhibition connecting tube of progress applied widely.

The technical solution adopted in the utility model is as follows：

A kind of explosion suppression system using vacuum anti-explosion, including inner tube, said inner tube include the gas access being sequentially communicated, in Between section and gas vent, the gas vent is connected to gas reception device, and said inner tube housing is coaxially provided with outer tube, described outer It is cavity between pipe and inner tube, vacuum setting in the cavity；

Turbofan group a and turbofan group b are additionally provided in cavity, the turbofan group a settings are in outer tube close to gas reception device One end, the axis of turbofan group a is perpendicular to the axis of outer tube, and fixed-link has shaft a in the axial direction at the center of turbofan group a, The shaft a runs through the wall surface of inner tube and is fixedly connected with the ball valve core a being arranged in gas vent；

One end in outer tube close to gas access is arranged in the turbofan group b, and the axis of turbofan group b is parallel to the axis of outer tube Line, fixed-link has shaft b, the shaft b to sequentially pass through the wall surface of outer tube and inner tube simultaneously in the axial direction for the center of turbofan group b It is fixedly connected with the ball valve core b being arranged in gas access；

The interlude includes the linkage section that multistage is sequentially coaxially connected to, and the linkage section includes the entrance being sequentially communicated Section, diffuser, throat, contraction section and outlet section, the throat are connected to cavity by through-hole；

Further include the rupture disk being arranged in throat, the rupture disk includes whippletree and outwardly protrudes to be formed along whippletree bottom surface Catch, the both ends of the whippletree are inserted into the wall surface of throat, and the catch is halfround bar slice type, the diameter of catch and throat it is interior Diameter is equal, and the top of catch convexes to form covering part axially outward along catch, and covering part is fitted in the inner wall of throat and by through-hole Covering.

Preferably, it is provided with pressure sensor in the cavity.

Preferably, the pressure sensor is electrically connected with warning device.

Preferably, the covering part and the binding face of throat's inner wall are provided with rubber pad.

In conclusion by adopting the above-described technical solution, the utility model has the beneficial effects that：

A kind of explosion suppression system using vacuum anti-explosion in the utility model, the very fast expansion of gas after itself explodes, once It is started to shrink at after impact, and it is slower for shock velocity with flame gas phase, and by Bernoulli equation, it can be seen that, band flame gas exists Throat is since sectional area increases, and speed is compared to be slowed down in other pipelines so that the speed with flame gas diffusion slows down, together When throat air pressure rise, the pressure difference between throat and cavity is further promoted at this time, so that the stream with flame gas To changing, the gas in throat is all inhaled into cavity in very short time, to bring anoxic effect, and effectively prevent Band flame gas diffusion, while preventing from sucking new gas, effectiveness of explosion suppression is non-by interior duct occlusion by the energy that its rotation is brought Chang Hao.

The wall surface in throat is arranged in a kind of explosion suppression system using vacuum anti-explosion in the utility model, through-hole so that interior Pipe need not turn, dusty gas can a line reach home, for normal operation, energy loss can be greatly reduced, although Rupture disk has blocked a part, but less compared to direct turn energy loss.

A kind of explosion suppression system using vacuum anti-explosion in the utility model, the outer wall of inner tube are wrapped in outer tube, and Vacuum is arranged in cavity so that the heat transfer effect of inner tube is very poor, has blocked the temperature of inner tube to pass to extraneous path, while working as powder After dust explosion occurs, after inner tube is blown an openning, extraneous air can not due to the isolation of the vacuum in outer tube and cavity It is contacted with explosion gas, band flame gas can not also be leaked to the external world.

A kind of explosion suppression system using vacuum anti-explosion in the utility model, by setting outer tube in inner tube peripheral hardware so that no It needs that special explosion suppressor is arranged again, due to needing a constant volume to fill Explosion suppressant in explosion suppressor so that it needs certain body Product size, can cause certain protrusion outside inner tube, when entire pipe needs to be used in the operating modes complex environment such as long and narrow, narrow When, then it needs to consider conflicting for explosion suppressor volume and environment；It is arranged by inner and outer pipes, simply increases caliber, is solved convex Rising causes and the problem of environmental warfare.

A kind of explosion suppression system using vacuum anti-explosion in the utility model is arranged by outer tube package and vacuum, is prevented The excessive generation of difference variation caused by only changing due to operating mode is expanded with heat and contract with cold, to prevent inner tube to be generated due to expanding with heat and contract with cold The problem of notch.

A kind of explosion suppression system using vacuum anti-explosion in the utility model, due to connecting successively equipped with multiple linkage sections in pipe It is logical so that rupture disk can be bonded throat in different directions, and the rupture disk of multilayer setting can effectively absorb explosion gas Impact force prevents it from destroying inner tube, while being also prevented from air blast weaker caused by the uncertainty due to demolition point Can not destroy by rush of water not with demolition point the same altitude line rupture disk so that it is total there are one or multiple rupture disks being capable of normal work Make, generates datonation-inhibition.

A kind of explosion suppression system using vacuum anti-explosion in the utility model, the whippletree of rupture disk are inserted into the wall surface of throat, So that rupture disk is stuck in throat, while covering part is bonded with the inner wall of throat so that rupture disk is by three sides from throat To power, this so that rupture disk is very firm when not destroyed, covering part will not be caused to be bonded because of skimming over for dusty gas It is unstable；And when dust explosion, the part that whippletree is inserted into throat's wall surface is directly torn with the junction for being not inserted into part, is covered Portion itself is also by from the further draught head of upper and lower gas, to be torn together.

A kind of explosion suppression system using vacuum anti-explosion in the utility model, datonation-inhibition simple in structure, the electronics dress of the present apparatus It sets and is used only as auxiliary device, will not lead to not press down because of service interruption or inductor ineffective equal individual parts error It is quick-fried, while reflection is exceedingly fast, and does not have any delay.

Description of the drawings

Fig. 1 is the utility model structure chart；

Fig. 2 is the rearview of the rupture disk of the utility model；

Fig. 3 is the side view of the rupture disk of the utility model；

It is marked in figure：1- entrances；2- rupture disks；21- whippletrees；22- covering parts；23- catch；3- throats；4- outlet sections； 5- diffusers；6- gas vents；7- linkage sections；8- outer tubes；9- through-holes；10- contraction sections；11- inner tubes；12- cavitys；13- turbofans Group a；14- gas reception devices；15- shafts a；16- ball valve cores a；The gas accesses 17-；18- turbofan groups b；19- shafts b；20- Ball valve core b.

Specific implementation mode

All features disclosed in this specification can be with any other than mutually exclusive feature and/or step Mode combines.

Embodiment one

Shown in the present embodiment combination Fig. 1, Fig. 2 and Fig. 3, a kind of explosion suppression system using vacuum anti-explosion, including inner tube 11, institute It includes gas access 17, interlude and the gas vent 6 being sequentially communicated to state inner tube 11, and the gas vent 6 is received with gas and filled 14 connections are set, 11 housing of said inner tube is coaxially provided with outer tube 8, is cavity 12, the cavity 12 between the outer tube 8 and inner tube 11 Interior vacuum setting；

Turbofan group a13 and turbofan group b18 are additionally provided in cavity 12, the turbofan group a13 settings are in outer tube 8 close to gas One end of reception device 14, the axis of turbofan group a13 perpendicular to the axis of outer tube 8, consolidate in the axial direction by the center of turbofan group a13 Determine chain to be connected to shaft a15, the shaft a15 through the wall surface of inner tube 11 and be fixedly connected with the ball valve being arranged in gas vent 6 Spool a16；

One end in outer tube 8 close to gas access 17 is arranged in the turbofan group b18, and the axis of turbofan group b18 is parallel to outside The axis of pipe 8, fixed-link has shaft b19, the shaft b19 to sequentially pass through outer tube 8 in the axial direction at the center of turbofan group b18 With the wall surface of inner tube 11 and be fixedly connected with the ball valve core b20 being arranged in gas access 17；

The interlude includes the linkage section 16 that multistage is sequentially coaxially connected to, and the linkage section 16 enters including what is be sequentially communicated Mouth section 1, diffuser 5, throat 3, contraction section 10 and outlet section 4, the throat 3 pass through through-hole 9 and are connected to cavity 12；

Further include the rupture disk 2 being arranged in throat 3, the rupture disk 2 includes whippletree 21 and outside along 21 bottom surface of whippletree The catch 23 formed is protruded, the wall surface of throat 3 is inserted at the both ends of the whippletree 21, and the catch 23 is halfround bar slice type, catch 23 diameter is equal with the internal diameter of throat 3, and the top of catch 23 convexes to form covering part 22, covering part axially outward along catch 23 22 are fitted in the inner wall of throat 3 and cover through-hole 9.

In use, dusty gas passes sequentially through entrance 1, diffuser 5, throat 3 and contraction section 10 by pipeline Left after outlet section 4, when dust in pipe explosion time, high temperature and impact extremely strong gas can be generated moment in pipe, due to The effect of diffuser 5, throat 3, contraction section 10, the gas increase in the sectional area of throat 3, and speed is retarded, and air pressure increases, Since cavity 12 is arranged for vacuum, the air pressure in air pressure and cavity 12 in throat 3 is further expanded so that fires air-flow Change direction, pours in cavity 12, the air-flow that ultrahigh speed all pours causes combustion efficiency to give a discount due to the anoxic in cavity 12 Button, while the turbofan group a13 in cavity 12 and the b18 rotations of turbofan group are also driven, the a13 rotations of turbofan group drive shaft a15 rotations, Shaft a15 rotations simultaneously drive ball valve core a16 to rotate, and to thoroughly close gas vent 6, and the b18 rotations of turbofan group drive Shaft b19 rotations, shaft b19 rotations simultaneously drive ball valve core b20 to rotate, and to thoroughly close gas access 17, both ends are equal It is blocked, generates datonation-inhibition effect.

The very fast expansion of gas after itself explodes starts to shrink at after one-shot, and with flame gas phase for shock velocity Relatively slow, by Bernoulli equation, it can be seen that, band flame gas in throat 3 since sectional area increases, compare in other pipelines by speed Slowed down so that the speed with flame gas diffusion slows down, while the air pressure of throat 3 rises, at this time between throat 3 and cavity 12 Pressure difference further promoted so that the flow direction with flame gas changes, the gas in throat 3 is all when extremely short It is interior to be inhaled into cavity 12, to bring anoxic effect, and it is effectively prevent band flame gas diffusion, while being brought by its rotation Energy closes inner tube 11, prevents from sucking new gas, effectiveness of explosion suppression is very good.

The wall surface in throat 3 is arranged in through-hole 9 so that inner tube 11 need not turn, and dusty gas being capable of a line arrival end Point can greatly reduce energy loss for normal operation, although rupture disk 2 has blocked a part, compare direct turn energy It is lost less.

The outer wall of inner tube 11 is wrapped in outer tube 8, and vacuum is arranged in cavity 12 so that the heat transfer effect pole of inner tube 11 Difference has blocked the temperature of inner tube 11 to pass to extraneous path, while after dust explosion occurs, inner tube 11 is blown an openning Afterwards, extraneous air can not be contacted with explosion gas due to the isolation of the vacuum in outer tube 8 and cavity 12, and band flame gas can not yet It is leaked to the external world.

By the way that outer tube 8 is arranged outside inner tube 11 so that special explosion suppressor need not be arranged again, due to being needed in explosion suppressor One constant volume fills Explosion suppressant so that it needs certain volume size, certain protrusion can be caused outside inner tube 11, when entire When pipe needs to be used in the operating modes complex environment such as long and narrow, narrow, then need to consider conflicting for explosion suppressor volume and environment；Pass through Inner and outer pipes 8 are arranged, and simply increase caliber, solve the problems, such as that protrusion causes and environmental warfare.

It is wrapped up by outer tube 8 and vacuum is arranged, prevent the heat of the excessive generation of difference variation caused by changing due to operating mode Swollen shrinkage, to prevent inner tube 11 to lead to the problem of notch due to expanding with heat and contract with cold.

Due to being sequentially communicated equipped with multiple linkage sections 16 in pipe so that rupture disk 2 can be bonded throat in different directions 3, the rupture disk 2 of multilayer setting can effectively absorb the impact force of explosion gas, prevent it from destroying inner tube 11, while can also prevent Only weaker air blast caused by the uncertainty due to demolition point can not destroy by rush of water not with demolition point in the same altitude line Rupture disk 2 so that there are one total or multiple rupture disks 2 can work normally, and generate datonation-inhibition.

The whippletree 21 of rupture disk 2 is inserted into the wall surface of throat 3 so that rupture disk 2 is stuck in throat 3, while covering part 22 and larynx The inner wall in portion 3 is bonded so that for rupture disk 2 by the power in three directions from throat 3, this makes rupture disk 2 be destroyed not Shi Shifen is firm, covering part 22 will not be caused to be bonded shakiness because of skimming over for dusty gas；And when dust explosion, whippletree 21 is inserted The part for entering 3 wall surface of throat is directly torn with the junction for being not inserted into part, and covering part 22 itself is also by from upper and lower gas The further draught head of body, to be torn together.

The present apparatus it is datonation-inhibition simple in structure, electronic device is used only as auxiliary device, even if because of service interruption or inductor Ineffective equal individual parts error will not lead to not datonation-inhibition, while reflection is exceedingly fast, and does not have any delay.

Embodiment two

The present embodiment is further improved based on embodiment 1, as shown in Figure 1, being provided with pressure sensing in the cavity 12 Device.

In use, by the way that pressure sensor is arranged in cavity 12 so that a large amount of with flames when being filled in cavity 12 After gas, air pressure drastically increases, and pressure sensor can detect at the first time.

Embodiment three

The present embodiment is further improved based on embodiment 2, as shown in Figure 1, the pressure sensor is electrically connected with report Alarm device.

In use, after pressure sensor detects that the air pressure in cavity 12 drastically increases at the first time, just should Signal is transmitted to warning device, warning device first time alert notice people evacuation.

Usually when do not have dust explosion occurs and when 8 gas leakage of outer tube, can also be by detecting at any time and notifying people couple It is overhauled, and the device can not use when preventing disaster from occurring.

Example IV

The present embodiment is based on any one of embodiment 1-3 and is further improved, as shown in Figure 1, the covering part 22 with The binding face of 3 inner wall of throat is provided with rubber pad.

In use, by the way that rubber pad is arranged so that the water in cavity 12 can be fully sealed, and not will produce leakage Phenomena such as gas, prevents effectiveness of explosion suppression from having a greatly reduced quality, and blocking when normal work to inner tube 11.

It is the embodiments of the present invention as described above.The utility model is not limited to the above embodiment, anyone It should learn the structure change made under the enlightenment of the utility model, it is every that there is same or similar skill with the utility model Art scheme, each falls within the scope of protection of the utility model.

Claims (4)

1. a kind of explosion suppression system using vacuum anti-explosion, including inner tube (11), said inner tube (11) include the gas being sequentially communicated Entrance (17), interlude and gas vent (6), the gas vent (6) are connected to gas reception device (14), and feature exists In：Said inner tube (11) housing is coaxially provided with outer tube (8), is cavity (12), the sky between the outer tube (8) and inner tube (11) The interior vacuum setting of chamber (12)；

Turbofan group a (13) and turbofan group b (18) are additionally provided in cavity (12), turbofan group a (13) setting is leaned in outer tube (8) One end of nearly gas reception device (14), the axis of turbofan group a (13) perpendicular to outer tube (8) axis, in turbofan group a (13) Fixed-link has shaft a (15) to the heart in the axial direction, and the shaft a (15), which is run through the wall surface of inner tube (11) and is fixedly connected with, to be set Set the ball valve core a (16) in gas vent (6)；

In outer tube (8) close to one end of gas access (17), the axis of turbofan group b (18) is parallel for turbofan group b (18) setting Axis in outer tube (8), fixed-link has shaft b (19), the shaft b (19) in the axial direction at the center of turbofan group b (18) It sequentially passes through the wall surface of outer tube (8) and inner tube (11) and is fixedly connected with the ball valve core b (20) being arranged in gas access (17)；

The interlude includes the linkage section (16) that multistage is sequentially coaxially connected to, and the linkage section (16) includes entering of being sequentially communicated Mouth section (1), diffuser (5), throat (3), contraction section (10) and outlet section (4), the throat (3) pass through through-hole (9) and are connected to sky Chamber (12)；

Further include that rupture disk (2) in throat (3) is set, the rupture disk (2) includes whippletree (21) and along whippletree (21) bottom The catch (23) that protrusion is formed is faced out, the wall surface of throat (3) is inserted at the both ends of the whippletree (21), and the catch (23) is The diameter of halfround bar slice type, catch (23) is equal with the internal diameter of throat (3), and the top of catch (23) is convex axially outward along catch (23) It rises and forms covering part (22), covering part (22) is fitted in the inner wall of throat (3) and covers through-hole (9).

2. a kind of explosion suppression system using vacuum anti-explosion according to claim 1, it is characterised in that：In the cavity (12) It is provided with pressure sensor.

3. a kind of explosion suppression system using vacuum anti-explosion according to claim 2, it is characterised in that：The pressure sensor It is electrically connected with warning device.

4. a kind of explosion suppression system using vacuum anti-explosion according to claim 1, it is characterised in that：The covering part (22) The binding face of throat (3) inner wall is provided with rubber pad.