CN112057783A - Explosion-proof fire-retardant device of industry pipeline branch pipe - Google Patents
Explosion-proof fire-retardant device of industry pipeline branch pipe Download PDFInfo
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- CN112057783A CN112057783A CN202010782408.4A CN202010782408A CN112057783A CN 112057783 A CN112057783 A CN 112057783A CN 202010782408 A CN202010782408 A CN 202010782408A CN 112057783 A CN112057783 A CN 112057783A
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- Prior art keywords
- explosion
- fire
- branch pipe
- pipeline
- fire retardant
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
- A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to an explosion-proof fire-retardant device for a branch pipe of an industrial pipeline, which is arranged at a connecting tee joint between a main pipeline and the branch pipe and is provided with a starting device, a sliding device and a fire-retardant plate, wherein the sliding device comprises a sliding groove fixed on the inner wall of the main pipeline, a spring is arranged in the front end of the sliding groove, the end part of the spring is connected with a sliding rod fixedly connected with the fire-retardant plate, the starting device is fixed on the inner wall of the main pipeline and is connected with a pressure sensing system circuit arranged in the main pipeline, the starting device is clamped with the fire-retardant plate, and when the pressure of the pipeline is suddenly increased to a starting threshold value set by the pressure sensing system due to explosion shock waves, the starting. According to the invention, explosion shock waves are adopted to cause the pressure of the pipeline to suddenly increase to the starting threshold, the fire retardant plate is pushed by the spring to slide and close the inlet of the branch pipe, so that subsequent shock waves and explosion flames are guided to spread in the main pipeline, the explosion risk of the branch pipe is reduced, and a major hazard along the branch pipe is protected.
Description
Technical Field
The invention relates to the technical field of pipeline explosion prevention, in particular to an explosion-proof fire retardant device for an industrial pipeline branch pipe.
Background
Safety problems in the transportation and use of combustible gas are difficult to avoid, once the pipeline leaks, the combustible gas and air are mixed to reach the explosion limit and explode when encountering open fire, and explosion flame is usually transmitted through the pipeline and further transmitted to the whole pipe network, so that other pipelines or equipment are damaged, and the domino effect of industrial accidents is caused. Therefore, a fire arrester is required to be arranged on the conveying pipeline to timely block or extinguish explosion flame, so that the domino effect of accidents is avoided, and the safety of equipment and personnel is protected.
The common flame arrester reduces the flame temperature through the flame retardant core to achieve the purpose of extinguishing flame, but the common flame arrester is easy to block and needs to be cleaned regularly; and the sealing effect of part current case is not good, has reduced the back-fire relief effect.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects in the prior art, the invention provides an explosion-proof fire retardant device for an industrial pipeline branch pipe, which aims to solve the technical problem of safe transportation of flammable and explosive gas pipelines in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an explosion-proof back-fire relief device of industry pipeline branch pipe, installs the tee bend department that meets between trunk line and branch pipe, has starting drive, slider and back-fire relief board, slider is equipped with the spring including fixing the sliding tray at the trunk line inner wall in the sliding tray front end, and spring end connection has the slide bar that links firmly with the back-fire relief board, starting drive fix the trunk line inner wall and establish the pressure sensing system line connection in the trunk line, starting drive and back-fire relief board joint when explosion shock wave causes pipeline pressure to increase suddenly to the start threshold value that pressure sensing system set for, starting drive and back-fire relief board throw off and promote the back-fire relief board by the spring and slide and seal branch pipe entrance.
Specifically speaking, trunk line inner wall about both ends be fixed with the sliding tray respectively, slide respectively in the sliding tray and be equipped with the slide bar, the slide bar is located back-fire relief board both sides and structure as an organic whole with the back-fire relief board.
Preferably, the fire barrier plate is a semi-circular arc-shaped bent plate which is made of high-elastic alloy metal materials and is attached to the inner wall of the main pipeline.
Further, starting drive include preforming and flexible post, the preforming is the protruding joint cooperation that the wedge can have with the back-fire relief plate front end, the flexible post of pressure sensing system control reciprocates and realizes preforming locking or unclamp the back-fire relief plate.
In order to ensure that the movement position of the fire retardant plate is accurate, the rear end of the sliding groove is provided with a baffle for limiting the movement position of the fire retardant plate.
The invention has the beneficial effects that: according to the invention, the starting device is clamped with the fire retardant plate, when the pressure of the pipeline is suddenly increased to the starting threshold value set by the pressure sensor due to explosion shock waves, the starting device is separated from the fire retardant plate, the fire retardant plate is pushed by the spring to slide to close the inlet of the branch pipe, so that subsequent shock waves and explosion flames are guided to spread in the main pipeline, the explosion risk of the branch pipe is reduced, a major hazard source along the branch pipe is protected, and the domino accident effect consequence is reduced.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic view of the attachment of an activation device of the present invention to a firestop plate.
Fig. 3 is a schematic top view of the present invention.
In the figure: 1. starting device, 1-1 pressing sheet, 1-2 telescopic column, 2 fire retardant plate, 3 spring, 4 sliding rod, 5 sliding groove, 6 screw component, 7 baffle, 8 branch pipe, 9 main pipe, 10 pressure sensor
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
An explosion-proof fire-retardant device for branch pipes of industrial pipelines, as shown in fig. 1-3, is installed at a tee joint between a main pipe 9 and a branch pipe 8, and is provided with a starting device 1, a sliding device and a fire-retardant plate 2.
The starting device 1 is fixed on the inner wall of the main pipeline 9 and is in line connection with a pressure sensor 10 arranged in the main pipeline 9, the starting device 1 comprises a pressing piece 1-1 and a telescopic column 1-2, and the pressing piece 1-1 is in wedge-shaped clamping fit with the fire retardant plate 2 to lock or unlock the fire retardant plate 2 through the pressing piece 1-1. Under normal conditions, the pressing sheet 1-1 fastens the fire retardant plate 2 downwards to fix the fire retardant plate at the initial position, so that the fire retardant plate cannot move; the telescopic column 1-2 is connected with the pressure sensor 10, when the system pressure change threshold reaches the set value of the pressure sensor 10, the pressure sensor 10 controls the telescopic column 1-2 to move upwards through electromechanical transmission, and the fire retardant plate 2 is loosened.
The fire retardant plate 2 is a semi-circular arc-shaped bent plate which is made of high-elasticity alloy metal materials and is attached to the inner wall of the main pipeline 9, has low flow resistance, has small influence on the gas flow in the main pipeline 9, and can ensure the normal transportation of the gas in the main pipeline 9; the front end of the fire retardant plate 2 is provided with a wedge-shaped bulge which is vertically attached to the pressing sheet 1-1 to play a role in locking the fire retardant plate 2.
Slide device is including adopting screw subassembly 6 to fix two sliding tray 5 at both ends about 9 inner walls of trunk line respectively, be equipped with spring 3 in the 5 front ends of sliding tray, slide respectively in the sliding tray 5 of 3 tip of spring and be equipped with slide bar 4, slide bar 4 is located 2 both sides of back-fire relief plate and structure as an organic whole with back- fire relief plate 2, 5 rear ends of sliding tray be equipped with the baffle 7 of 2 shift positions of spacing back-fire relief plate.
The starting device 1 is started by sensing pressure change in the main pipeline 9, based on experimental data, a pipeline explosion experiment is carried out by using 3.9% propane air premixed gas in the embodiment, the measured pressure of an explosion precursor is 0.03MPa, the conveying pressure is usually less than 0.01MPa in a low-pressure gas conveying pipeline, and normal production is influenced by too low starting pressure, so that the embodiment selects a pressure change threshold value of 0.03MPa as the starting pressure, the starting device 1 is started when the pressure sensor 10 in the main pipeline 9 monitors that the pressure change value is greater than 0.03MPa, and meanwhile, because the propagation speed of shock waves is greater than the propagation speed of flames, the starting device 1 is started before the flames are transmitted to a branch pipe 8 three-way inlet, and the purposes of guiding and blocking the propagation of the flames.
The starting pressure is obtained through experiments and numerical simulation tests, and the starting pressure needs to be determined according to the experiments and the numerical simulation aiming at the transportation of different gases.
The invention is arranged at the position of a connecting tee joint of a main trunk 9 and a branch pipe 8, and the fire retardant plate 2 seals the branch pipe 8 after being started by an explosion pressure threshold value, thereby changing the propagation of explosion waves and flames in the branch pipe 8 and reducing the explosion risk in the branch pipe 8.
In the experimental pipeline model based on industrial pipeline, main pipe 9 and branch pipe 8's tee bend department area suddenly expands and shock wave reflection has produced the torrent swirl, and flame receives the vortex in the transmission process and drags, and flame propagates in the branch pipe 8 that the accident source is closely before under the closed pipeline condition, if branch pipe 8 connects high-pressure high-risk device, and this device can block flame propagation by priority, guarantees the safety of high-pressure high-risk device.
The closed starting threshold value of the fire retardant plate 2 is obtained through experimental tests and numerical simulation, the experimental pipeline and the numerical simulation pipeline model are from the actual industrial pipeline researched, and the starting threshold value of the fire retardant plate 2 in the embodiment has pertinence and applicability and can be applied to different working conditions.
Fire retardant plate 2 in this embodiment is corrosion-resistant, high temperature resistant, the high-elastic alloy metal material of fatigue-resistant, establishes on 9 walls of trunk line near being close to branch pipe 8 through sliding tray 5, and when the intraductal pressure surge reached the start threshold value, closed branch pipe 8 that needs priority protection rapidly through popping out the mode to reduce the explosion risk of branch pipe 8 pipeline.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. The utility model provides an explosion-proof back-fire relief device of industry pipeline branch pipe, installs and meets tee bend department, characterized by between trunk line (9) and branch pipe (8): starting drive (1), slider and back-fire relief board (2) have, slider is equipped with spring (3) including fixing sliding tray (5) at trunk line (9) inner wall in sliding tray (5) front end, and spring (3) end connection has slide bar (4) that link firmly with back-fire relief board (2), starting drive (1) fix trunk line (9) inner wall and with establish pressure sensor (10) line connection in trunk line (9), starting drive (1) and back-fire relief board (2) joint, when explosion shock wave causes pipeline pressure to suddenly increase to the start threshold value that pressure sensor (10) set for, starting drive (1) and back-fire relief board (2) throw off and promote back-fire relief board (2) slip closed branch pipe (8) entrance by spring (3).
2. An explosion-proof fire retardant device for branch pipes of industrial pipelines as claimed in claim 1, which is characterized in that: trunk line (9) inner wall about both ends be fixed with respectively sliding tray (5), slide tray (5) in slide tray slides respectively and is equipped with slide bar (4), slide bar (4) are located back-fire relief plate (2) both sides and with back-fire relief plate (2) structure as an organic whole.
3. An explosion-proof fire retardant device for branch pipes of industrial pipelines as claimed in claim 2, which is characterized in that: the fire retardant plate (2) is a semi-circular arc-shaped bent plate which is made of high-elastic alloy metal materials and is attached to the inner wall of the main pipeline (9).
4. An explosion-proof fire retardant device for branch pipes of industrial pipelines as claimed in claim 3, which is characterized in that: the starting device (1) comprises a pressing piece (1-1) and a telescopic column (1-2), the pressing piece (1-1) is wedge-shaped and can be matched with a bulge arranged at the front end of the fire retardant plate (2) in a clamping mode, and the pressure sensor controls the telescopic column (1-2) to move up and down to lock or loosen the fire retardant plate (2) through the pressing piece (1-1).
5. An explosion-proof fire retardant device for branch pipes of industrial pipelines as claimed in claim 1, which is characterized in that: the rear end of the sliding groove (5) is provided with a baffle (7) for limiting the moving position of the fire retardant plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010782408.4A CN112057783A (en) | 2020-08-06 | 2020-08-06 | Explosion-proof fire-retardant device of industry pipeline branch pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010782408.4A CN112057783A (en) | 2020-08-06 | 2020-08-06 | Explosion-proof fire-retardant device of industry pipeline branch pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112057783A true CN112057783A (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010782408.4A Pending CN112057783A (en) | 2020-08-06 | 2020-08-06 | Explosion-proof fire-retardant device of industry pipeline branch pipe |
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| Country | Link |
|---|---|
| CN (1) | CN112057783A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112657094A (en) * | 2021-01-21 | 2021-04-16 | 郑传英 | Flame arrester for gas pipeline |
| CN114838227A (en) * | 2022-04-06 | 2022-08-02 | 常州大学 | Bent pipe reinforcing explosion suppression and explosion suppression integrated device |
Citations (6)
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|---|---|---|---|---|
| RU2174027C1 (en) * | 2001-01-11 | 2001-09-27 | Военная академия Ракетных войск стратегического назначения им. Петра Великого | Fire-retardent device for air ducts |
| CN101530656A (en) * | 2008-11-04 | 2009-09-16 | 大连理工大学 | Automatic type detonation-hindered flame arrester |
| CN201715063U (en) * | 2010-07-28 | 2011-01-19 | 上海朗诗建筑科技有限公司 | Fire valve of indoor air exhaust branch pipe |
| EP2899323A1 (en) * | 2014-01-24 | 2015-07-29 | CS-Beton s.r.o. | Slotted pipe with fire seal drainage system and its use |
| CN108547985A (en) * | 2018-04-10 | 2018-09-18 | 武汉精厨节能环保科技有限公司 | A kind of draw-out type fire-fighting fire-proof valve |
| CN111050860A (en) * | 2017-05-19 | 2020-04-21 | Bs&B创新有限公司 | Explosion baffle valve |
-
2020
- 2020-08-06 CN CN202010782408.4A patent/CN112057783A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2174027C1 (en) * | 2001-01-11 | 2001-09-27 | Военная академия Ракетных войск стратегического назначения им. Петра Великого | Fire-retardent device for air ducts |
| CN101530656A (en) * | 2008-11-04 | 2009-09-16 | 大连理工大学 | Automatic type detonation-hindered flame arrester |
| CN201715063U (en) * | 2010-07-28 | 2011-01-19 | 上海朗诗建筑科技有限公司 | Fire valve of indoor air exhaust branch pipe |
| EP2899323A1 (en) * | 2014-01-24 | 2015-07-29 | CS-Beton s.r.o. | Slotted pipe with fire seal drainage system and its use |
| CN111050860A (en) * | 2017-05-19 | 2020-04-21 | Bs&B创新有限公司 | Explosion baffle valve |
| CN108547985A (en) * | 2018-04-10 | 2018-09-18 | 武汉精厨节能环保科技有限公司 | A kind of draw-out type fire-fighting fire-proof valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112657094A (en) * | 2021-01-21 | 2021-04-16 | 郑传英 | Flame arrester for gas pipeline |
| CN114838227A (en) * | 2022-04-06 | 2022-08-02 | 常州大学 | Bent pipe reinforcing explosion suppression and explosion suppression integrated device |
| CN114838227B (en) * | 2022-04-06 | 2024-01-23 | 常州大学 | Elbow reinforcing explosion suppression and explosion suppression integrated device |
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Application publication date: 20201211 |
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