CN206582893U - Explosion proof door - Google Patents

Abstract

This application discloses a kind of explosion proof door, including door closure, the exhaust gases passes that case and the longitudinally through casing interior are set, wherein, the cross-sectional area of the exhaust gases passes top surface is less than the cross-sectional area of its bottom surface, the door closure is detachably provided in the top of the case and covers the top surface of the exhaust gases passes, the water screen tube for setting a row parallel to each other between the bottom of the explosion proof door and the burner hearth of boiler, these described water screen tubes leave the gap for allowing flue gas to pass through between being located at the pipeline of exhaust gases passes basal surface position, the gap not being located between the pipeline of exhaust gases passes basal surface position is sealed by band steel.

Description

Explosion proof door

Technical field

The application is related to field of boilers, more particularly to a kind of explosion proof door.

Background technology

Boiler is during operation it sometimes appear that detonation, detonation refers to the combustible moment accumulated in the burner hearth of boiler Burning so that the phenomenon that the pressure of fume side drastically increases in burner hearth.Deflagration phenomenon can cause the parts damages of boiler, therefore, Boiler is usually provided with explosion proof door, to carry out pressure release to burner hearth in time, prevents harm caused by deflagration phenomenon.

Existing explosion proof door is usually gravity type or the spring gravity explosion proof door that is in tilted layout, when furnace pressure exceedes During certain value, explosion proof door opens pressure release；Pressure release is to after to a certain degree, and explosion proof door is fallen after rise to initial position.Ideally, it is explosion-proof The initial driving force that door is opened is typically from the high pressure in burner hearth, such as shown in utility model CN201420668676.3, detonation When phenomenon occurs, gases at high pressure in burner hearth enter barrel shell by the space between horizontal cyclic pipeline, and then top-opening door lid Side carries out pressure release.But in reality, the gap between pipeline is difficult to allow enough flue gases to pass through in a short time, such as scheme Shown in 1, pipeline 10 usually requires to form sufficiently large exhaust gases passes 20 in the form of bending avoidance design.However, this pipe Curved way avoids the manufacturing cost and manufacture difficulty that design adds whole system.

Utility model content

The purpose of the application is that providing one kind designs simple explosion proof door, and its is simple in construction, can preferably solve again existing There is problem present in technology.

A kind of explosion proof door, including the exhaust gases passes that door closure, case and the longitudinally through casing interior are set, wherein, The cross-sectional area of the exhaust gases passes top surface is less than the cross-sectional area of its bottom surface, and the door closure is detachably provided in described The top of case and the top surface for covering the exhaust gases passes, set between the bottom of the explosion proof door and the burner hearth of boiler a row that This parallel water screen tube, these described water screen tubes leave permission flue gas between the pipeline of exhaust gases passes basal surface position and led to The gap crossed, the gap not being located between the pipeline of exhaust gases passes basal surface position are sealed by band steel.

In feasible embodiment, the water screen tube is equally spaced.

In feasible embodiment, the exhaust gases passes are tubular and lower half gradually opens and forms horn mouth.

In feasible embodiment, the explosion proof door is arranged on the top of boiler.

In feasible embodiment, the case top vertical, which is provided with to set on guide rod, the guide rod, to be resetted Spring and guide rod end setting limiting component, the door closure can be along the guide rods in vertical direction activity.

In feasible embodiment, the cross-sectional area of the door closure is more than the cross section face of the exhaust gases passes top surface Product, the case sets sealing gasket at the position contacted with the door closure.

In feasible embodiment, the outer cover of the door closure is provided with smoke guiding cover.

In order to be able to be further understood that the feature and technology contents of the application, refer to below in connection with the detailed of the application Illustrate and accompanying drawing, however accompanying drawing only provide with reference to and explanation use, not for being any limitation as to the application.

Brief description of the drawings

The foregoing and other side of the application will more completely be managed by being discussed in detail of being done with reference to the accompanying drawings Solution and understanding, in the accompanying drawings：

Fig. 1 shows explosion proof door in the prior art and the pipeline schematic diagram of burner hearth junction；

Fig. 2 shows a kind of explosion proof door schematic diagram of embodiment of the application；

Fig. 3 shows Fig. 2 explosion proof door and the pipeline schematic diagram of burner hearth junction.

Embodiment

For help those skilled in the art definitely understand this application claims theme, below in conjunction with the accompanying drawings in detail The embodiment of the application is described.

As shown in Figures 2 and 3, a kind of explosion proof door, including door closure 100, case 200 and the longitudinally through case 200 The exhaust gases passes 300 that inside is set, wherein, the cross-sectional area of the top surface 301 of exhaust gases passes 300 is less than its bottom surface 302 Cross-sectional area, the door closure 100 is detachably provided in the top of the case 200 and covers the exhaust gases passes 300 Top surface 301, sets the water screen tube 400 that a row is parallel to each other, these water between the bottom of the explosion proof door and the burner hearth of boiler Cold wall pipe 400 leaves the gap 401, no for allowing flue gas to pass through between being located at each pipeline of the position of bottom surface 302 of exhaust gases passes 300 Gap 402 between each pipeline of the position of bottom surface 302 of exhaust gases passes 300 is sealed by band steel.Due to exhaust gases passes 300 The cross-sectional area of bottom surface 302 is more than the cross-sectional area of the top surface 301 of exhaust gases passes 300, when detonation occurs in burner hearth, greatly The flue gas of amount can rapidly through gap 401 by the entrance of bottom surface 302 enter exhaust gases passes 300 in, meanwhile, top surface 301 compared with Small outlet can ensure that the design that door closure 100 need not be complicated again, can either be pushed open pressure release rapidly by flue gas and can steadily return again Fall.For exhaust gases passes design in the prior art straight up and down, pressure release effect is significantly improved.

In this embodiment, the water screen tube 400 is equally spaced, and this reduces water screen tube 400 design cost, need not both take into account that the avoiding-type of row bending is designed, between the water screen tube 400 of diverse location also not Need to consider special spacing.In other embodiments, can also be according to actual needs to the spacing between water screen tube 400 Adjust accordingly.

In this embodiment, in order to ensure flue gas quickly through, and not cause exhaust gases passes 300 structure too Complexity, the exhaust gases passes are designed as tubular and lower half gradually opens and forms horn mouth.In addition, the explosion proof door is arranged on pot The top of stove.In other embodiments, explosion proof door can also be arranged on the side of boiler.

Existing for solution gravity type explosion proof door of the prior art or the spring gravity type explosion proof door being in tilted layout can not Automatic fall-back, the problems such as fall position after rise precisely or after falling after rise sealing effectiveness be bad, present embodiment to explosion proof door and Its door closure 100 uses the design of vertical direction.As preferably embodiment, the top vertical of case 200 is provided with guiding Back-moving spring 501 is set on bar 500, the guide rod 500 and the end of the guide rod 500 sets limiting component 502, thus, The door closure 100 can be along the guide rod in vertical direction activity.When detonation, the upward jack-up door of flue gas of preset high-pressure is reached Lid 100, door closure 100 is moved upwards along the compression reseting spring 501 of guide rod 500, not more than at limiting component 502.Door When lid 100 is moved upwards, separated with the top of case 200, flue gas and high pressure are released by the top surface 301 of exhaust gases passes 300； After after the disappearance of burner hearth inner high voltage, door closure 100 is returned to initially under the collective effect of back-moving spring 501 and gravity along guide rod 500 Position, again seals top surface 301.In this embodiment, the outside of the door closure 100 is also arranged with smoke guiding cover 600, The flue gas discharged in burner hearth is guided to specific direction, in case Field Force comes to harm.Relative to prior art Speech, the door closure falling position of the application is accurate.

In order to reach good sealing effectiveness, as preferably embodiment, the cross-sectional area of the door closure 100 is more than The cross-sectional area of the top surface 301 of the exhaust gases passes 300, in addition, the case 200 is in the portion contacted with the door closure 100 Position sets seal washer 201.

Although having been shown and described the application based on specific embodiment, the application is not restricted to shown thin Section.On the contrary, in the range of claim and its equivalent substitution, the various details of the application can be modified.

Claims (7)

1. a kind of explosion proof door, it is characterised in that the explosion proof door is set including door closure, case and the longitudinally through casing interior The exhaust gases passes put, wherein, the cross-sectional area of the exhaust gases passes top surface is less than the cross-sectional area of its bottom surface, the door closure It is detachably provided in the top of the case and covers the top surface of the exhaust gases passes, the bottom of the explosion proof door and boiler The water screen tube for setting a row parallel to each other between burner hearth, these described water screen tubes are located at the pipeline of exhaust gases passes basal surface position Between leave allow flue gas pass through gap, be located at exhaust gases passes basal surface position pipeline between gap sealed by band steel.

2. explosion proof door according to claim 1, it is characterised in that the water screen tube is equally spaced.

3. explosion proof door according to claim 1, it is characterised in that the exhaust gases passes are tubular and lower half is gradually opened Form horn mouth.

4. explosion proof door according to claim 1, it is characterised in that the explosion proof door is arranged on the top of boiler.

5. explosion proof door according to claim 1, it is characterised in that the case top vertical is provided with guide rod, described Back-moving spring is set on guide rod and the guide rod end sets limiting component, the door closure can be along the guide rod vertical Direction activity.

6. explosion proof door according to claim 5, it is characterised in that the cross-sectional area of the door closure is logical more than the flue gas The cross-sectional area of road top surface, the case sets sealing gasket at the position contacted with the door closure.

7. explosion proof door according to claim 1, it is characterised in that the outer cover of the door closure is provided with smoke guiding cover.