CN108730982A

CN108730982A - A kind of closing burning jamb elasticity releasing pressure automatically explosion-proof method and structure

Info

Publication number: CN108730982A
Application number: CN201710241484.2A
Authority: CN
Inventors: 刘元雨
Original assignee: Shenzhen Yuanjiang Technology Co Ltd
Current assignee: Shenzhen Yuanjiang Technology Co Ltd
Priority date: 2017-04-13
Filing date: 2017-04-13
Publication date: 2018-11-02
Anticipated expiration: 2037-04-13
Also published as: CN108730982B

Abstract

The present invention relates to a kind of closing burning jamb elasticity releasing pressure automatically explosion-proof method and structures, including setting burner inside cavity safe pressure threshold value, by self-relieving method when more than threshold value, and realize the structure of this method, burner cavity is supported on burner frame by spring, and with table top precompressed tightening seal, the camber of spring when burner inside cavity pressure increases to pressure release threshold value, burner cavity moves down and work top is fixed, make to generate gap between work top and burner cavity, air-flow is released automatically below table top without influencing article above work top and table top, to prevent the generation of catastrophic explosion, etc. internal pressures release completion, burner cavity automatically replies the normal use in situ without influencing burner under the action of the spring again.

Description

A kind of closing burning jamb elasticity releasing pressure automatically explosion-proof method and structure

Technical field

The present invention relates to a kind of safe practices of enclosed infrared burning jamb, specifically close burning jamb elasticity certainly Dynamic pressure-relief explosion-proof method and structure.

Background technology

Gas furnace at present, either air suspended type or infrared-type, are all open burnings, and combustion gas enters logical when furnace chamber Injection suction part primary air is crossed, combustion front burning is arrived at after premix, combustion gas and air inlet are before entering combustion state All be the cold conditions close to room temperature, unless be tempered, generally will not explosion issues, even if being tempered, its is pre- for air suspended type stove Mixed chamber very little, brisance is smaller, and to infrared-type stove, premix chamber is relatively large, but whole power is not very big, and because In open space, the air-flow energy quick pressure releasing of detonation or explosion can also form people sometimes though catastrophic effect will not be formed It is raw to threaten, but at present all without Compulsory Feature and corresponding solution.But in enclosed infrared burning jamb (such as Closed gas burner described in the Chinese patent of the patent No. 2016102172158), burner cavity is generally in closed State, gas/air air inlet and the exhaust of flue gas can only all be flowed by setting path, if because certain reason causes to be tempered, it is pre- The air blast of mixed chamber can only disorderly go here and there in the cavity, it is likely that serious consequence be formed, so must take into consideration this when burner designs Kind accidental situation, enables burner because quickly being let out automatically when certain reason causes internal pressure suddenly to increase to some safety margins Pressure avoids that disaster occurs.

Invention content

The object of the present invention is to provide a kind of closing burning jamb elasticity releasing pressure automatically explosion-proof method and structures.

To achieve the above object, according to an aspect of the present invention, it provides a kind of when burner inside cavity gas pressure is small Pressure relief opening is generated immediately when being worked normally when secure threshold, and being more than the threshold value, and internal gas is made quickly to be let out below table top The method pressed without influencing article above work top and table top, and realize the burner cavity resilient support and precompressed of this method The structure of compact form sealing.

The specific implementation measure of the method：Generate certain operating pressure in cavity when normal combustion, and back draft When the pressure that generates be much larger than the operating pressure, therefore a maximum admission threshold can be set, so that the threshold value is more than normal work and press Power and be much smaller than blast pressure, when internal gas pressure be more than the threshold value when by releasing pressure automatically, make the gas of internal detonation or explosion Flow quick release；The threshold value should be less than there may be the minimum internal gas pressures of destructiveness damage, and less than panel and support Attachment force between frame, but should be greater than the sealed pressure for avoiding gas to leak when normal combustion.

Gas discharges below table top when to ensure pressure release, and the connection of work top and closed furnace head cavity body, which does not use, to be fixed Formula connects, and uses precompressed compact form to be tightly connected and work top can be born destroys impact force and table top and general frame Fixed force is all higher than secure threshold when opening pressure release, and such user and article are unaffected.

The burner cavity resilient support and precompressed compact form sealing structure, refer to closing burning jamb cavity and braced frame Between connection use elastic construction, tension spring, compression spring, torsional spring or other type elastic structures can be selected as needed, design On should use multi-point equispaced formula flexibly support, and ensure elastic structure total support force be equal to closed furnace head cavity body conduct oneself with dignity and let out The sum of threshold value is pressed, and the issuable gas pressure of explosion time should be much smaller than.

When releasing pressure automatically occurs, camber of spring, burner cavity integrally moves down, and work top and the sealing of burner cavity is made to connect There is gap in synapsis, and after internal air under pressure leaks, cavity internal pressure restores normally immediately, and burner cavity is in elastic anchorage force Effect is lower to restore normal condition, i.e. work top is in sealing state again with burner cavity, and burner can be continuing with.

Gap very little needed for pressure release, so the pressure release springing stroke of elastic support structure need not be excessive, crossing senior general causes back Elastic force increases, and generates greater impact power, and harmful effect is brought for system.

Due to the needs of pressure release, access burner cavity in need connection, such as air inlet pipe, ignition electrode, probe, exhaust pipe Etc. must all use non-rigid connection, or the structure that can be moved synchronously in company with burner, otherwise cause pressure release to be obstructed or break Bad property is damaged.

Compared with the prior art, the invention has the advantages that：

Temporarily without the relevant technologies, what which utilized is material property, and reliability is high, is realized simply, of low cost.

Description of the drawings

Fig. 1 is the basic structure schematic diagram of the embodiment of the present invention one

Fig. 2 is the basic structure schematic diagram of the embodiment of the present invention two

Specific implementation mode

Embodiment one：Burner cavity (5) tightly withstands glass under the pre torqued force effect of multiple torsionsprings (3) in Fig. 1 Glass table top (1), torsionspring are fixed on burner frame (2), and strength can be used with (2) of burner frame in glass table top (1) Adhesive tape bonding, fixed force should be greater than spring (3) total support force, and all internal pipelines (4) of burner cavity (5) that introduce all are adopted With flexible connection.

The torsionspring (3) at least should should make burner along burner cavity (5) surrounding uniform layout there are three supporting point Cavity (5) uniformly pre-pressing glass table top (1) below.

Burner cavity (5) upper end should use the high-temperature resistant thermal insulating material for having certain deformability, such as alumina silicate or aeroge Braided fabric makes it be formed between glass table top (1) under certain pressure effect and is tightly connected, and internal gas will not be from seam crossing Leakage, which is referred to as minimum sealed pressure.

The bigger about outside atmosphere pressure of internally fired gas pressure intensity (occurrence is related with system design), gas when normal work Body will generate certain operating pressure in contact surface, and spring (3) should be made to support the precompression after its burner cavity (5) must not be small In the sum of the operating pressure and minimum sealed pressure, seam crossing will be without gas leakage at this time.

Consider to use the creep of rear spring and burner cavity (5) sealing material possible for a long time, pressure release threshold value is equal to above-mentioned The sum of operating pressure and minimum sealed pressure add creep safety coefficient.

Air-flow is along design channel proper flow when burner works normally, when burner cavity (5) internal pressure increases simultaneously suddenly When reaching pressure release threshold value, that is, when reaching torsionspring (3) pretightning force, spring (3) generates flexible deformation, and burner cavity (5) will be whole Body moves down, and will occur gap, gas fast leak between glass table top (1) and burner cavity (5), and internal pressure will be released immediately It puts, subsequent burner cavity (5) moves up under the elastic force effect of torsionspring (3) and pressed glass table top, entire burner restore just Often.

Since the attachment force of glass table top (1) and burner frame (2) is more than pressure release threshold value, and glass table top (1) is in pressure release It not will produce broken under threshold value force effect, therefore the people of the article and surrounding on table top does not have any danger

The advantages of this programme is dependable performance, simple in structure, at low cost.

Embodiment two：Burner cavity (4) tightly withstands glass table top under the pulling force effect of multiple springs (3) in Fig. 2 (1), spring (3) is fixed on using multi-point equispaced formula on burner frame (2), the fixation of glass table top (1) and burner frame (2) Power is more than the total pulling force of spring (3), and all internal pipelines (5) for introducing burner cavity (4) are all using flexible connection.

Other aspects of the present embodiment are identical as embodiment one.

Above-described embodiment is only that the preferred embodiment of the present invention is described, not to the spirit and scope of the present invention It is defined, under the premise of not departing from design philosophy of the present invention, technical side of the professional and technical personnel in the art to the present invention The various changes and modifications that case is taken, all belong to the scope of protection of the present invention.

Claims

1. a kind of closing burning jamb elasticity releasing pressure automatically blast resistance construction, including work top (1), burner frame (2), spring (3), burner cavity (5), it is characterised in that：Work top (1) is relatively securely connected to burner frame (2) above, spring (3) It is fixed on burner frame (2), burner cavity (5) is supported by spring (3) completely, and when normal use, burner cavity (5) exists Work top (1) bottom surface is tightly bonded under the action of spring (3), all outlets are discharged along discharge duct, when burner cavity It is (5) internal that spring (3), which deforms, causes burner cavity (5) to move down when abnormal pressure occur and increasing and be more than the pre-pressing force of spring, Make gap occur between work top (1) and burner cavity (5), air-flow leaks, pressure abrupt release, the explosion of avoiding damage to property Occur, after burner cavity (5) internal pressure releases, sets back under the rebound effect of spring (3), burner can be just Often work.

2. a kind of closing burning jamb elasticity releasing pressure automatically explosion-proof method, it is characterised in that：Gas pressure setting one in cavity A maximum admission threshold makes the air-flow quick release of internal detonation or explosion by releasing pressure automatically when being more than the threshold value；The threshold value is answered Less than there may be the minimum internal gas pressures of destructiveness damage, and less than the attachment force between panel and braced frame, but answer The sealed pressure for avoiding gas to leak when more than normal combustion.

3. a kind of closing burning jamb elasticity releasing pressure automatically explosion-proof method according to claims 1 and 2 and structure, special Sign is：The pre-pressing force between burner cavity (5) and work top (1) should be made to be equal to releasing pressure automatically threshold value, at this time spring (3) Total predeformation power when working condition is equal to the sum of total weight and pressure release threshold value of burner cavity (5), using every after multi-point support Root spring should have identical deflection, be not limited to using various forms such as torsional spring, compression spring, tension springs.