CN110566923A - Explosion-proof door of exhaust-heat boiler - Google Patents
Explosion-proof door of exhaust-heat boiler Download PDFInfo
- Publication number
- CN110566923A CN110566923A CN201910917032.0A CN201910917032A CN110566923A CN 110566923 A CN110566923 A CN 110566923A CN 201910917032 A CN201910917032 A CN 201910917032A CN 110566923 A CN110566923 A CN 110566923A
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- CN
- China
- Prior art keywords
- explosion
- rotating shaft
- cover
- proof door
- door cover
- Prior art date
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- Pending
Links
- 238000004880 explosion Methods 0.000 claims abstract description 141
- 239000002918 waste heat Substances 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 22
- 239000004576 sand Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 abstract description 6
- 238000005474 detonation Methods 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 15
- 239000003546 flue gas Substances 0.000 description 14
- 230000005484 gravity Effects 0.000 description 13
- 238000009434 installation Methods 0.000 description 9
- 238000004200 deflagration Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000009191 jumping Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
- F22B1/1807—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M11/00—Safety arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The invention discloses an explosion door of a waste heat boiler, which comprises: explosion-proof door takeover, explosion-proof door lid and spacing subassembly. One end of the explosion-proof door connecting pipe forms an outlet. The explosion-proof door cover can rotationally seal and cover the outlet. The limiting assembly comprises a counterweight rotating shaft, a limiting block and balancing weights, the limiting block is arranged on the explosion door connecting pipe, the counterweight rotating shaft is connected with the explosion door cover and synchronously rotates with the explosion door cover, the counterweight rotating shaft is limited on the limiting block to limit the maximum opening angle of the explosion door cover after rotating, and the counterweight rotating shaft is detachably connected with a plurality of balancing weights so that the tripping pressure of the explosion door cover is adjustable. According to the explosion-proof door disclosed by the embodiment of the invention, after detonation occurs in the explosion-proof door and enough pressure is accumulated, the explosion-proof door cover and the counterweight rotating shaft rotate together and are opened under the action of impact force, and when the explosion-proof door cover rotates to the position where the counterweight rotating shaft is matched with the limiting block, the explosion-proof door cover is opened at the maximum angle to release pressure. After pressure relief, the valve can be reset quickly. The jump-off pressure is adjustable, and the use reliability is high.
Description
Technical Field
The invention belongs to the technical field of boilers, and particularly relates to an explosion door of a waste heat boiler.
Background
The waste heat boiler is one of core devices in the non-ferrous metal smelting process, can cool and recover high-temperature flue gas discharged by a metallurgical industrial furnace, and utilizes heat carried by the high-temperature flue gas to produce steam required by the process production. The smelting process usually involves the reduction reaction of metal oxide, regard heavy oil, natural gas, liquefied petroleum gas or coal etc. as reducing agent, the chemical reaction involved is complicated and changeable, there is often the incomplete situation of reaction, make the high-temperature flue gas entering the exhaust-heat boiler contain a certain amount of hydrocarbon, combustible components such as carbon monoxide and tiny carbon granule, etc., when these combustible mixtures flow through the difficult and more closed flue of ventilation, it is very easy to happen the deflagration phenomenon once meeting the fire source, especially when these combustible mixtures gather in some place of the flue, meet the fire source and is apt to happen deflagration, cause the partial area pressure in the exhaust-heat boiler or in the flue to increase suddenly, cause the accident.
It is therefore necessary to install explosion vents in the waste heat boiler and in the flue where combustible mixtures are easily collected. When deflagration occurs, the explosion-proof door is automatically opened to release pressure so as to reduce the impact damage of deflagration to the waste heat boiler and the flue and ensure the safe operation of the waste heat boiler.
The existing oil-fired industrial boiler, gas industrial boiler or pulverized coal industrial boiler is provided with an explosion vent, but the high-temperature flue gas flowing through the waste heat boiler has complex components, so that the adaptability of the explosion vent to the waste heat boiler is poor. For example, the gravity type explosion vent often has the phenomena that the explosion vent has frequent take-off, the explosion vent can not be reset due to large-amplitude rotation, and the service life of the explosion vent is reduced. Although some explosion vents can be reset, the explosion vents are not tightly sealed after pressure relief and resetting, and air leakage is easy to occur, so that harmful gas and dust in high-temperature flue gas enter the atmosphere to pollute the environment. The high-temperature flue gas of the leakage part can continuously scour the sealing ring, so that the burning of the sealing ring and the leakage of the flue gas are aggravated, vicious circle is caused, and the operating efficiency of the boiler is reduced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the explosion-proof door of the waste heat boiler can adjust the tripping pressure by adjusting the number and the positions of the balancing weights, is easy to reset after tripping, and solves the technical problems that the explosion-proof door is frequently tripped and is difficult to reset after tripping.
According to the embodiment of the invention, the explosion door of the waste heat boiler comprises: one end of the explosion-proof door connecting pipe forms an outlet; the explosion-proof door cover can rotationally and hermetically cover the outlet; the limiting assembly comprises a counterweight rotating shaft, a limiting block and balancing weights, the limiting block is arranged on the explosion door connecting pipe, the counterweight rotating shaft is connected with the explosion door cover and synchronously rotates with the explosion door cover, the counterweight rotating shaft is limited on the limiting block after rotation, the maximum opening angle of the explosion door cover is limited, and the counterweight rotating shaft is detachably connected with a plurality of balancing weights so that the take-off pressure of the explosion door cover is adjustable.
According to the explosion door of the waste heat boiler, the limiting block is arranged on the connecting pipe of the explosion door, when detonation occurs inside the explosion door and enough pressure is accumulated, the explosion door cover and the counterweight rotating shaft rotate and open together under the action of the pressure, when the explosion door cover rotates to the position where the counterweight rotating shaft is matched with the limiting block, the opening angle of the explosion door cover is the largest, and when pressure relief is completed, the explosion door cover is convenient and quick to reset. Because the counterweight rotating shaft is detachably connected with the plurality of counterweight blocks and is connected with the explosion-proof door cover, the gravity of the counterweight rotating shaft and the explosion-proof door cover must be overcome simultaneously when the explosion-proof door cover is opened, and therefore the tripping pressure of the explosion-proof door cover can be adjusted by adjusting the number and the position of the counterweight blocks on the counterweight rotating shaft, the frequent tripping of the explosion-proof door cover when deflagration occurs is avoided, and the service life of the explosion-proof door cover is prolonged.
According to the explosion door of the waste heat boiler, the explosion door cover is rotatably connected to the explosion door connecting pipe through the rotating shaft, the rotating shaft is connected with the counterweight rotating shaft, and the plane where the counterweight rotating shaft and the explosion door cover are located is 30-80 degrees.
According to a further embodiment of the invention, a stop block is arranged on the limit block, a stop piece matched with the stop block is arranged on the rotating shaft, and the opening angle of the explosion-proof door cover reaches the maximum when the stop piece is stopped against the limit block.
Optionally, an avoiding hole is formed in the limiting block, and the rotating shaft penetrates through the avoiding hole.
According to a further embodiment of the present invention, the counterweight rotating shaft is provided with a plurality of mounting holes at intervals along the axial direction, and the counterweight block is detachably mounted in the mounting hole.
According to the explosion-proof door of the waste heat boiler, the limiting block is formed into a fan shape, a plurality of limiting holes are formed in the limiting block at intervals along the circumferential direction, and the counter weight rotating shaft is detachably connected with the limiting pins matched with the limiting holes.
According to the explosion-proof door of the waste heat boiler, the outlet is horizontally arranged, the horizontal projection area of the explosion-proof door cover is larger than the outlet area of the explosion-proof door connecting pipe, and the horizontal projection of the balance weight rotating shaft is positioned outside the horizontal projection of the explosion-proof door cover.
According to the explosion-proof door of the waste heat boiler, the outlet is provided with the annular sealing groove, sealing sand is arranged in the annular sealing groove, and the cover of the explosion-proof door is provided with the joint edge matched with the annular sealing groove.
The explosion door of the waste heat boiler further comprises a cooling piece, the cooling piece is arranged at the inlet of the explosion door connecting pipe in a disc mode, and the cooling piece cools high-temperature air flow flowing through the explosion door connecting pipe.
According to the explosion-proof door of the waste heat boiler, the side wall of the explosion-proof door connecting pipe is provided with the transparent observation port.
Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
Fig. 1 is a schematic perspective view of an explosion vent according to an embodiment of the present invention when the explosion vent is not opened.
Fig. 2 is a schematic perspective view of another angle of the explosion vent of one embodiment of the present invention when the explosion vent is not opened.
Fig. 3 is a perspective view of another angle of the explosion vent according to an embodiment of the present invention.
Figure 4 is a longitudinal cross-sectional view of an explosion vent in accordance with one embodiment of the invention.
Fig. 5 is a schematic partial structure view of the rotating shaft, the limiting block, the blocking piece and the stopper according to an embodiment of the present invention.
fig. 6 is a cross-sectional view taken along plane F-F of fig. 5.
Figure 7 is a top plan view (partially in cross-section) of an explosion vent in accordance with one embodiment of the invention.
Reference numerals:
An explosion vent 100,
An explosion-proof door connecting pipe 1, an outlet 11, an inlet 12,
An explosion-proof door cover 2, a joint edge 21,
A rotating shaft 3, a baffle 31, a rotating shaft sleeve 32, a connecting body 33, a supporting sleeve 34,
A cooling member 4, a cooling pipe 41,
a limiting component 5,
A counterweight rotating shaft 51, a mounting hole 512,
A limit block 52, a limit hole 521, an avoidance hole 522, a stop 523, a support seat 524,
A balancing weight 53,
A transparent observation port 6,
An annular seal groove 7.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
in the description of the present invention, it is to be understood that the terms "longitudinal," "length," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the orientation shown in the drawings, merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the invention.
The explosion vent 100 of the waste heat boiler according to the embodiment of the present invention will be described with reference to the accompanying drawings.
An explosion vent 100 of a waste heat boiler according to an embodiment of the present invention, as shown in fig. 1, includes: explosion-proof door takeover 1, explosion-proof door lid 2 and spacing subassembly 5.
wherein, one end of the explosion-proof door connecting pipe 1 forms an outlet 11, and the explosion-proof door cover 2 can rotationally seal and cover the outlet 11.
As shown in fig. 1, the limiting component 5 includes a counterweight rotating shaft 51, a limiting block 52 and a counterweight block 53, the limiting block 52 is arranged on the explosion door connecting pipe 1, the counterweight rotating shaft 51 is connected with the explosion door cover 2 and rotates synchronously with the explosion door cover 2, the counterweight rotating shaft 51 is limited on the limiting block 52 after rotating to limit the maximum opening angle of the explosion door cover 2, and the counterweight rotating shaft 51 is detachably connected with a plurality of counterweight blocks 53 to enable the jump-starting pressure of the explosion door cover 2 to be adjustable.
As can be seen from the above structure, in the explosion vent 100 of the waste heat boiler according to the embodiment of the present invention, the limiting block 52 is disposed on the explosion vent connection pipe 1, when the explosion vent occurs inside and a sufficient pressure is accumulated, the explosion vent cover 2 and the counterweight rotation shaft 51 rotate together and open under the action of the pressure, and when the counterweight rotation shaft 51 rotates to a position where the limiting block 52 is matched with the counterweight rotation shaft 51, the explosion vent cover 2 opens at a maximum angle to release the pressure. Because the explosion-proof door cover 2 has the maximum opening angle, when the angle is reasonable in design, after pressure relief is completed, the explosion-proof door cover 2 can conveniently and quickly reset under the action of the gravity of the explosion-proof door cover and the gravity of the counterweight rotating shaft 51.
According to the explosion-proof door cover, the balance weight rotating shafts 51 are detachably connected with the plurality of balance weight blocks 53, the balance weight rotating shafts 51 are connected with the explosion-proof door cover 2, so that the explosion-proof door cover 2 must overcome the gravity of the balance weight rotating shafts 51 and the explosion-proof door cover 2 when opened, the tripping pressure of the explosion-proof door cover 2 can be adjusted by adjusting the number of the balance weight blocks 53 on the balance weight rotating shafts 51, the explosion-proof door cover 2 is prevented from being frequently tripped when deflagration occurs, and correspondingly, the explosion-proof door cover 2 can be controlled to be opened again only under the action of reaching a certain pressure, so that the service life of the explosion-proof door cover. The explosion-proof door cover 2 is prevented from being opened frequently so that the connection between the explosion-proof door cover 2 and the explosion-proof door connecting pipe 1 is disabled, and the explosion-proof door cover 2 cannot be opened and closed normally.
Compared with the explosion-proof door which is reset only by the self gravity of the door cover and bounces only by overcoming the self gravity of the door cover, the explosion-proof door has the advantages that the jumping pressure is adjustable, and the reset after jumping is easy and difficult to block.
In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In some embodiments of the present invention, as shown in fig. 1 and 4, the explosion door cover 2 is rotatably connected to the explosion door connecting pipe 1 through a rotating shaft 3, the rotating shaft 3 is connected to a counterweight rotating shaft 51, and the counterweight rotating shaft 51 is located at an angle of 30-80 degrees with respect to the explosion door cover 2. Through setting up axis of rotation 3, make explosion vent lid 2 and counter weight pivot 51 form synchronous rotation on the one hand, on the other hand can make explosion vent lid 2 take over 1 rotatable for the explosion vent to realize closing reset and open the pressure release in the rotation process. When the angle between the counterweight rotating shaft 51 and the surface of the explosion-proof door cover 2 is within the range of 30-80 degrees, the counterweight rotating shaft 51 and the counterweight block 53 thereon exert certain gravity on the explosion-proof door cover 2, so that the explosion-proof door cover 2 needs to overcome larger take-off pressure when being opened; after the pressure is relieved, the counterweight rotating shaft 51 and the counterweight 53 on the counterweight rotating shaft do not influence the resetting of the explosion-proof door cover 2 to the outlet 11 of the explosion-proof door connecting pipe 1 under the action of self gravity. That is, when the angle between the counterweight rotating shaft 51 and the explosion-proof door cover 2 is smaller than 30 degrees, each additional counterweight 53 on the counterweight rotating shaft 51 will have a great influence on the take-off pressure of the explosion-proof door cover 2, which is not beneficial to adjusting the take-off pressure of the explosion-proof door cover 3. When the angle between the counterweight rotating shaft 51 and the explosion-proof door cover 2 is greater than 80 degrees, and after the counterweight rotating shaft 51 and the explosion-proof door cover 3 rotate to the maximum opening angle, the component force of the gravity of the counterweight rotating shaft 51 and the counterweight block 53 offsets part of the component force of the gravity of the explosion-proof door cover 3, so that the explosion-proof door cover 3 is not easy to reset. In addition, when the angle between the counterweight rotating shaft 51 and the explosion door cover 2 is greater than 80 degrees, in order to enable the explosion door cover 2 to reset, when the explosion door cover 2 rotates to the maximum angle, the actual opening angle of the explosion door cover 2 is too small, and the pressure relief efficiency is low.
Optionally, as shown in fig. 4, a rotating shaft sleeve 32 is fixedly sleeved outside the rotating shaft 3, a plurality of connecting bodies 33 are arranged on the rotating shaft sleeve 32, and the other ends of the plurality of connecting bodies 33 are connected to the explosion-proof door cover 2, when the rotating shaft 3 rotates, the rotating shaft sleeve 32 rotates synchronously, and the explosion-proof door cover 2 also rotates.
In some specific examples, as shown in fig. 7, the connecting body 33 is formed as a hinge.
Optionally, as shown in fig. 4 and 7, a support sleeve 34 is sleeved outside the rotating shaft 3, the support sleeve 34 is in clearance fit with the rotating shaft 3, and the support sleeve 34 is connected to the explosion vent adapter 1.
Advantageously, as shown in fig. 2 and 3, the counterweight rotating shaft 51 is provided with a plurality of mounting holes 512 at intervals along the axial direction, and the counterweight 53 is detachably mounted in the mounting holes 512. Through add in mounting hole 512 and establish corresponding balancing weight 53 to add balancing weight 53 through the mounting hole 512 of selecting different positions, can make the take-off pressure of explosion-proof door cover 2 more nimble when adjusting. It can be understood that, the installation of the counterweight block 53 in the installation hole 512 near the end of the limiting block 52 and the installation of the counterweight block 53 in the installation hole 512 far from the end of the limiting block 52 have different take-off pressures on the explosion-proof door cover 2 due to different centers of gravity of rotation. In some specific examples, in order to make the jumping pressure of the explosion door cover 3 larger or make the explosion door cover 3 easier to reset, the counterweight block 53 is installed in the installation hole 512 on the counterweight rotating shaft 51 far away from the limiting block 52.
The detachable connection mode may be that the weight 53 is installed in the installation hole 512 through a positioning pin, or the weight 53 is installed in the installation hole 512 through a bolt-nut connector, which is not limited herein.
Optionally, as shown in fig. 3 and 6, the limiting block 52 is formed in a fan shape, a plurality of limiting holes 521 are circumferentially arranged on the limiting block 52 at intervals, and a limiting pin matched with the limiting holes 521 is detachably connected to the counterweight rotating shaft 51. Here, on the one hand, when the explosion vent 100 is in the installation process, the rotating shaft 3, the explosion vent cover 2 and the counterweight rotating shaft 51 are assembled, the explosion vent cover 2 is firstly covered on the outlet 11, meanwhile, the counterweight rotating shaft 51 is connected on the rotating shaft 3, the counterweight rotating shaft 51 is rotated and adjusted relative to the angle between the explosion vent cover 2, the explosion vent cover 2 is positioned on the limiting block 52 through limiting, so as to ensure the installation angle between the explosion vent cover 2 and the counterweight rotating shaft 51, finally, the explosion vent cover 2 and the rotating shaft 3 are connected through the rotating shaft sleeve 32 and the connecting body 33, so that a stable installation angle is formed, and then the limiting pin can be removed.
On the other hand, when exhaust-heat boiler need carry out the inside maintenance, then open explosion-proof door cover 2 to through spacer pin or bolt with in fixed one of them spacing hole 521 on the stopper 52 of counter weight pivot 51, can make explosion-proof door cover 2 for export 11 forms certain opening angle, make things convenient for the maintainer to get into corresponding position through explosion-proof door 100 and carry out maintenance work.
Optionally, as shown in fig. 2, 3 and 6, an avoiding hole 522 is formed on the limiting block 52, and the rotating shaft 3 passes through the avoiding hole 522. That is, when the explosion-proof door cover 2 rotates, the rotating shaft 3 passes through the avoiding hole 522, and the avoiding hole 522 can limit the rotating shaft 3 to a certain extent, so that the rotating shaft 3 is prevented from shaking; and also prevents the rotating shaft 3 from being interfered by the stopper 52 during the rotation process and from being normally rotated to the maximum angle.
In some embodiments of the present invention, as shown in fig. 2 and 3, the stopper 52 is provided with a stopper 523, as shown in fig. 1, the rotating shaft 3 is provided with a blocking plate 31 matched with the stopper 523, and when the blocking plate 31 abuts against the stopper 523, the opening angle of the explosion-proof door cover 2 reaches the maximum. The stop piece 31 is in limit fit with the stop block 523, so that the explosion-proof door cover 2 is kept stationary after being opened to the maximum angle and starts to release pressure, and the resetting can be continued after the pressure release is finished. Through the spacing cooperation structure that sets up separation blade 31 and dog 523, limited the rotatable extreme position of axis of rotation 3 effectively to further inject the maximum angle that explosion-proof door closure 2 can open, guaranteed explosion-proof door closure 2 and can realize resetting smoothly after opening to maximum angle, ensure exhaust-heat boiler system and resume normal operating fast.
Optionally, the limiting block 52 is vertically arranged, the plane of the limiting block 52 is perpendicular to the plane of the explosion-proof door cover 2, two opposite side surfaces of the limiting block 52 respectively correspond to the counterweight rotating shaft 51 and the explosion-proof door cover 2, one side of the limiting block 52 close to the explosion-proof door cover 2 is connected with a supporting seat 524, and the supporting seat 524 is connected to the explosion-proof door connecting pipe 1. By arranging the supporting seat 524, the limiting block 52 can be ensured to have a certain supporting strength, and the limiting block 52 can be stably connected to the explosion vent connecting pipe 1.
In some embodiments of the present invention, as shown in fig. 1, the outlet 11 is horizontally disposed, and the horizontal projection area of the explosion door cover 2 is larger than the area of the outlet 11 of the explosion door adapter 1. It can be understood that, when the horizontal projection of explosion door cover 2 is greater than the area of export 11, can guarantee that explosion door cover 2 can seal export 11 completely when closed to make explosion door 100 and exhaust-heat boiler system form comparatively inclosed space in, guarantee that exhaust-heat boiler can form stable operational environment when not taking place the deflagration, prevent that the high temperature flue gas from outwards spilling over.
Advantageously, as shown in fig. 7, the horizontal projection of the counterweight rotating shaft 51 is located outside the horizontal projection of the explosion-proof door cover 2. By adopting the structure, the counterweight rotating shaft 51 can extend out to a proper distance, so that the counterweight block 53 is convenient to be additionally arranged, and the counterweight rotating shaft 51 is also convenient to be connected with the rotating shaft 3. It can be understood that when the counterweight rotating shaft 51 is welded with the rotating shaft 3, the counterweight rotating shaft 51 is spaced from the explosion-proof door cover 2 by a certain horizontal distance, so that the welding point on the rotating shaft 3 is farther, thereby facilitating quick welding and preventing other parts from being affected in the welding process.
Advantageously, as shown in fig. 4, the counterweight rotating shaft 51 is disposed perpendicular to the rotating shaft 3, so that the assembly is easy and the center of gravity is stable.
In some embodiments of the present invention, as shown in fig. 1 and 7, the outlet 11 is provided with an annular sealing groove 7, sealing sand is arranged in the annular sealing groove 7, and as shown in fig. 3, the explosion door cover 2 is provided with a joint edge 21 matched with the annular sealing groove 7. By adopting the sand sealing form, the sealing performance of the explosion door cover 2 is excellent when the explosion door cover is closed to the outlet 11, the pressure inside the explosion door 100 is stable, and no high-temperature smoke is leaked outwards in the normal operation process of the waste heat boiler system. In addition, when the explosion-proof door cover 2 is closed on the outlet 11, the sealing sand can also be used for forming a certain buffer effect on the explosion-proof door cover 2, so that the impact force on the explosion-proof door connecting pipe 1 is relieved when the explosion-proof door cover 2 is closed, and the damage to the self joint edge 21 is avoided. Effectively avoiding the occurrence of air leakage, smoke leakage and the like.
In some embodiments of the present invention, as shown in fig. 4, the present invention further comprises a cooling element 4, the cooling element 4 is disposed at the inlet 12 of the explosion vent pipe 1, and the cooling element 4 cools the high-temperature air flow flowing through the explosion vent pipe 1. Through setting up cooling part 4, can be effectively for the high temperature flue gas cooling of the explosion vent takeover 1 of flowing through, prevent that the flue gas temperature is too high and damage explosion vent lid 2 to the life of extension explosion vent lid 2. Meanwhile, the temperature of the flue gas entering the explosion door connecting pipe 1 is greatly reduced, the large-area slag bonding of the explosion door connecting pipe 1 is prevented, and the blockage of the explosion door connecting pipe 1 due to the slag bonding is avoided. In addition, after the temperature in the explosion door connecting pipe 1 is reduced, lining heat preservation and refractory concrete do not need to be arranged, the structure is simple, and the cost is low.
Optionally, the cooling member 4 comprises a cooling pipe 41, the cooling pipe 41 is coiled at the inlet 12 of the explosion vent adapter 1, and cooling water circularly flows into the cooling pipe 41 to cool the high-temperature flue gas flowing through.
In other examples, the cooling element 4 is formed as an air-cooled heat exchanger, and a circulation gas having a relatively low temperature flows through the cooling pipe 41.
Advantageously, the explosion door connecting pipe 1 is formed into a cylindrical shape, and the whole height of the explosion door connecting pipe 1 is higher, so that the temperature of the flue gas cooled by the cooling piece 4 is lower when the flue gas passes through the outlet 11, and the use safety and the durability of the explosion door cover 2 are ensured.
In some embodiments of the present invention, as shown in fig. 1, the sidewall of the vent adapter 1 is provided with a transparent viewing port 6. Through setting up transparent observation mouth 6, make things convenient for the workman to observe and overhaul.
The specific structure of the explosion proof door 100 of the heat recovery boiler in the specific embodiment of the present invention will be described below with reference to the accompanying drawings.
Examples
A explosion vent 100 of a waste heat boiler, comprising: explosion vent is taken over 1, explosion vent lid 2, axis of rotation 3, cooling part 4, spacing subassembly 5, transparent observation mouth 6 and annular seal groove 7.
As shown in fig. 4 and 7, the explosion door connecting pipe 1 is in a vertical cylindrical shape, the top end of the explosion door connecting pipe 1 is formed into an outlet 11, the bottom end of the explosion door connecting pipe 1 is formed into an inlet 12, an annular sealing groove 7 is arranged around the outlet 11, sealing sand is arranged in the annular sealing groove 7, as shown in fig. 3, a joint edge 21 matched with the annular sealing groove 7 is arranged on the explosion door cover 2, and when the explosion door cover 2 is closed on the outlet 11, the joint edge 21 is buried in the sealing sand. The cooling part 4 is formed into a water-cooling pipe, the water-cooling pipe is coiled at the inlet 12 of the explosion door connecting pipe 1, and the cooling part 4 cools the high-temperature air flow flowing through the explosion door connecting pipe 1. As shown in figure 1, the side wall of the explosion door connecting pipe 1 is provided with a transparent observation port 6.
As shown in fig. 1 and 4, a support sleeve 34 is disposed on the outlet 11, a rotation shaft 3 is rotatably connected in the support sleeve 34, as shown in fig. 4, a rotation shaft sleeve 32 is sleeved outside the rotation shaft 3, a plurality of connecting bodies 33 are disposed on the rotation shaft sleeve 32, the other ends of the plurality of connecting bodies 33 are connected to the explosion-proof door cover 2, and when the rotation shaft 3 rotates, the rotation shaft sleeve 32 synchronously rotates, and the explosion-proof door cover 2 also rotates. And a limiting component 5 is arranged on the rotating shaft 3.
As shown in fig. 1, the limiting component 5 includes a counterweight rotating shaft 51, a limiting block 52 and a counterweight block 53, as shown in fig. 3 and 6, the limiting block 52 is formed in a fan shape, a plurality of limiting holes 521 are circumferentially arranged on the limiting block 52 at intervals, and a limiting pin matched with the limiting holes 521 is detachably connected to the counterweight rotating shaft 51. As shown in fig. 2, 3 and 6, an avoiding hole 522 is formed on the limiting block 52, and the rotating shaft 3 passes through the avoiding hole 522. The stopper 52 is vertically arranged, the surface of the stopper 52 is perpendicular to the surface of the explosion-proof door cover 2, two opposite side surfaces of the stopper 52 respectively correspond to the counterweight rotating shaft 51 and the explosion-proof door cover 2, one side of the stopper 52, which is close to the explosion-proof door cover 2, is connected with a supporting seat 524, and the supporting seat 524 is connected to the explosion-proof door connecting pipe 1. One end of the rotating shaft 3 is connected with a counterweight rotating shaft 51, and the counterweight rotating shaft 51 and the surface where the explosion-proof door cover 2 is located are 30 degrees. As shown in fig. 7, the horizontal projection of the counterweight rotating shaft 51 is located outside the horizontal projection of the explosion-proof door cover 2. As shown in fig. 2 and 3, the counterweight rotating shaft 51 is provided with a plurality of mounting holes 512 at intervals along the axial direction, and the counterweight 53 is detachably mounted in the mounting holes 512.
According to the invention, the jump-up pressure of the explosion-proof door cover 2 can be flexibly adjusted by adjusting the position and the number of the counter weights 53 arranged on the counter weight rotating shaft 51, so that the explosion-proof door cover 2 is ensured not to be opened and closed frequently, the explosion-proof door cover 2 is ensured to be opened and decompressed smoothly when the internal pressure is high, and the explosion-proof door cover 2 can be quickly restored to the original position after being opened. The explosion vent 100 of the present invention has high reliability and is not prone to safety problems.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Three weights 53 are shown in fig. 3 for illustrative purposes, but it is obvious to those skilled in the art after reading the above technical solutions that the solution can be applied to other number of weights 53, which also falls within the protection scope of the present invention.
Other configurations of the explosion vent 100 of the waste heat boiler according to the embodiment of the present invention, such as the control of the kick-off pressure of the explosion vent 100 and the correspondence of the weight of the explosion vent cover 2 and the check assembly 5, are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An explosion vent of a waste heat boiler, comprising:
One end of the explosion-proof door connecting pipe forms an outlet;
The explosion-proof door cover can rotationally and hermetically cover the outlet;
The limiting assembly comprises a counterweight rotating shaft, a limiting block and balancing weights, the limiting block is arranged on the explosion door connecting pipe, the counterweight rotating shaft is connected with the explosion door cover and synchronously rotates with the explosion door cover, the counterweight rotating shaft is limited on the limiting block after rotation, the maximum opening angle of the explosion door cover is limited, and the counterweight rotating shaft is detachably connected with a plurality of balancing weights so that the take-off pressure of the explosion door cover is adjustable.
2. The explosion vent of a waste heat boiler as recited in claim 1, wherein the explosion vent cover is rotatably connected to the explosion vent connection pipe through a rotation shaft, the rotation shaft is connected to the counterweight rotation shaft, and the plane where the counterweight rotation shaft and the explosion vent cover are located is 30-80 degrees.
3. The explosion vent of waste heat boiler as claimed in claim 2, wherein the stopper is provided with a stopper, the rotation shaft is provided with a stopper cooperating with the stopper, and the opening angle of the explosion vent cover is maximized when the stopper abuts against the stopper.
4. The explosion vent of waste heat boiler as recited in claim 2, wherein the stopper is formed with an avoiding hole, and the avoiding hole passes through the rotating shaft.
5. The explosion vent of a waste heat boiler as recited in claim 1, wherein a plurality of mounting holes are axially spaced on the counterweight rotating shaft, and the counterweight is detachably mounted in the mounting holes.
6. the explosion vent of waste heat boiler as recited in claim 1, wherein the stopper is formed in a fan shape, a plurality of stopper holes are formed on the stopper at intervals along the circumferential direction, and a stopper pin matched with the stopper holes is detachably connected to the counterweight rotating shaft.
7. The explosion vent of a waste heat boiler as recited in claim 1, wherein the outlet is horizontally disposed, a horizontal projection area of the explosion vent cover is larger than an outlet area of the explosion vent connection pipe, and a horizontal projection of the counterweight rotating shaft is located outside the horizontal projection of the explosion vent cover.
8. The explosion vent of waste heat boiler as recited in claim 1, wherein the outlet is provided with an annular sealing groove, sealing sand is disposed in the annular sealing groove, and the cover of the explosion vent is provided with a joint edge matched with the annular sealing groove.
9. The explosion vent of a waste heat boiler as recited in claim 1, further comprising a cooling member, wherein the cooling member is coiled at an inlet of the explosion vent connection pipe, and the cooling member cools the high-temperature air flow flowing through the explosion vent connection pipe.
10. An explosion vent for a waste heat boiler as recited in claim 1, wherein a transparent observation port is provided at a side wall of the explosion vent connection pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917032.0A CN110566923A (en) | 2019-09-26 | 2019-09-26 | Explosion-proof door of exhaust-heat boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917032.0A CN110566923A (en) | 2019-09-26 | 2019-09-26 | Explosion-proof door of exhaust-heat boiler |
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| CN110566923A true CN110566923A (en) | 2019-12-13 |
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| CN201910917032.0A Pending CN110566923A (en) | 2019-09-26 | 2019-09-26 | Explosion-proof door of exhaust-heat boiler |
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Cited By (1)
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| US20220141974A1 (en) * | 2019-06-03 | 2022-05-05 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Explosion-proof structure |
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