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CN-224207263-U - High-safety combustible gas fire-retarding device

CN224207263UCN 224207263 UCN224207263 UCN 224207263UCN-224207263-U

Abstract

The utility model discloses a high-safety combustible gas fire-retarding device which comprises a water seal assembly, an air outlet assembly and a partition assembly, wherein the water seal assembly comprises a water container, an air inlet pipe is arranged below the liquid level of the water container, an air cavity is arranged above the liquid, the air outlet assembly comprises an air container for containing combustible gas, the air container is communicated with the air cavity and is provided with an air outlet pipe, the partition assembly is arranged on a pipeline for conveying the combustible gas between the air outlet pipe and the air container, the partition assembly comprises a valve seat and a valve assembly, a valve plate hole is arranged on the valve seat, a pre-explosion cavity is arranged on one side of the valve plate hole, the valve assembly comprises a valve plate and a valve shaft, the valve shaft and the valve plate are in a communication position and a blocking position in an airtight sliding sleeving manner respectively, a movable magnetic ring and a fixed magnetic ring are arranged on the valve shaft and the valve plate respectively, and the valve shaft is converted from the communication position to the blocking position and is driven by the combustible gas which is subjected to flash explosion in the pre-explosion cavity. The utility model does not need electric elements such as power supply and the like, and has the advantages of simple structure, good safety and high reliability.

Inventors

  • CHEN XIAOPING
  • ZHU RUIBIN
  • ZHU ZHANBIN

Assignees

  • 广州汤姆逊电气有限公司

Dates

Publication Date
20260508
Application Date
20250218

Claims (10)

  1. 1. The high-safety combustible gas fire-retarding device is characterized by comprising a water seal assembly (1), an air outlet assembly (2) and a partition assembly (3); The water seal assembly (1) comprises a water container (11) containing non-flammable liquid, an air inlet pipe (12) is arranged below the liquid level of the water container (11), and an air cavity (16) is arranged above the liquid; The gas outlet assembly (2) comprises a gas container (21) for containing combustible gas, the gas container (21) is communicated with the gas cavity (16) and is provided with a gas outlet pipe (25) for discharging the combustible gas, and a partition assembly (3) is arranged on a pipeline for transmitting the combustible gas between the gas outlet pipe (25) and the gas container (21); The isolating assembly (3) comprises a valve seat (31) and a valve assembly (4), a valve plate hole (311) is formed in the valve seat (31), and a pre-explosion cavity (312) is formed in one side of the valve plate hole (311); the valve assembly (4) comprises a valve plate (41) and a valve shaft (42), wherein an air hole (411) for enabling the air cavity (16) to be communicated with the air container (21) is formed in the valve plate (41), and an air guide groove (421) is formed in the valve shaft (42); The valve shaft (42) and the valve plate (41) are hermetically sleeved at a communication position and a blocking position respectively, when the valve shaft (42) is at the communication position, the air holes (411) are aligned with the air guide grooves (421), and when the valve shaft (42) is at the blocking position, the air holes (411) are staggered with the air guide grooves (421); The valve plate (41) is sleeved with the valve plate hole (311), one end of the valve shaft (42) is positioned in the pre-explosion cavity (312), and the valve shaft (42) is converted from a communication position to a blocking position and driven by combustible gas which is flash-exploded in the pre-explosion cavity (312).
  2. 2. A high-safety combustible gas fire-retarding device as claimed in claim 1, wherein the valve seat (31) is provided with more than two mutually serially connected pre-explosion chambers (312), the valve plate hole (311) is internally provided with more than two mutually serially connected air holes (411) of the valve assembly (4), and valve shafts (42) of adjacent valve assemblies (4) are mutually staggered.
  3. 3. A high safety combustible gas fire-retarding device as claimed in claim 1, wherein a reset cavity (313) is arranged on one side of the valve seat (31) opposite to the pre-explosion cavity (312), the reset cavity (313) is provided with a reset shaft (32) corresponding to the valve shaft (42), and the reset shaft (32) is an eccentric columnar structure.
  4. 4. The high-safety combustible gas fire-retarding device of claim 1, wherein one end of the valve shaft (42) is provided with a movable magnetic ring (43), the valve plate (41) is provided with a corresponding fixed magnetic ring (44), the movable magnetic ring (43) and the fixed magnetic ring (44) are permanent magnets, and the magnetic pole directions are the same.
  5. 5. A highly safe flammable gas fire retardant apparatus as recited in claim 1, wherein a connecting pipe (24) is provided between said pre-explosion chamber (312) and said gas container (21), said connecting pipe (24) being in the shape of a spiral.
  6. 6. A high safety combustible gas fire-retardant apparatus as defined in claim 1 wherein a filler (26) is provided in said gas container (21), said filler comprising asbestos and/or steel balls.
  7. 7. A high safety combustible gas fire-retardant device as defined in claim 1, wherein the bottom of the water container (11) is provided with a water pipe (15), and the side surface is provided with a liquid level pipe (14).
  8. 8. A highly safe flammable gas fire retardant apparatus as defined in claim 1, wherein said water container (11) is provided with a porous plate filter (13) under the liquid surface of the non-flammable liquid.
  9. 9. A high safety combustible gas fire-retarding apparatus according to claim 1 wherein flame-retarding plates (27) are arranged between said pre-explosion chamber (312) and said connecting tube (24) and said gas outlet tube (25).
  10. 10. A high safety combustible gas fire-retardant apparatus as defined in claim 1 wherein said gas container (21) is provided with a pressure valve (22) and an air inlet valve (23).

Description

High-safety combustible gas fire-retarding device Technical Field The utility model relates to the technical field of flame arresters, in particular to a high-safety combustible gas flame arrester. Background In use, flammable gas (such as oxyhydrogen gas and the like) is easy to temper a conveying pipeline to cause damage to equipment and personnel, and in order to reduce the harm of tempering, industry technicians develop a large number of fire-retarding technologies. The technical scheme is that an explosion-proof membrane and a pressure sensor are arranged at the bottom of a sub flame arrester, the explosion-proof membrane at the bottom of the sub flame arrester can directly impact the bottom of the sub flame arrester once the outlet is subjected to flash explosion, the explosion-proof membrane at the bottom of the sub flame arrester is quickly exploded and triggers the pressure sensor, and the pressure sensor timely communicates with a control loop to realize pipeline gas leakage and gas interruption, so that the continuous flash explosion of gas is prevented. The control loop takes a programmable controller as a core and is a control circuit composed of a common electronic element, a pressure sensor liquid and a liquid level sensor. The technical scheme needs a programmable controller and a sensor, and has the problems of complex structure and the like. The technical scheme of the oxyhydrogen flame dry type anti-backfire device with the bulletin number of CN2163662Y is that a piston and a valve rod are arranged in a sleeve of a fire stopping tube, or a ball body is added at an air inlet, and the piston is pushed by utilizing the instant impact force of explosion to stop fire and prevent backfire. The technical scheme does not disclose the position limiting characteristics of the valve rod or the sphere, the valve rod or the sphere can be influenced by installation azimuth, external force or preheating after flash explosion and other factors to fail in use, and the fire stopping pipe is directly connected with the side air outlet, so that the oxyhydrogen combustion speed is high. Therefore, the technical scheme has the problems of high use requirement and low reliability. Therefore, there is a need to design a high-safety flammable gas fire-retardant device, which has the characteristics of simple structure, good safety and high reliability. Disclosure of utility model In order to overcome the defects in the prior art, the technical scheme adopted by the utility model is as follows: The high-safety combustible gas fire-retarding device is characterized by comprising a water seal assembly (1), an air outlet assembly (2) and a partition assembly (3); The water seal assembly (1) comprises a water container (11) containing non-flammable liquid, an air inlet pipe (12) is arranged below the liquid level of the water container (11), and an air cavity (16) is arranged above the liquid; The gas outlet assembly (2) comprises a gas container (21) for containing combustible gas, the gas container (21) is communicated with the gas cavity (16) and is provided with a gas outlet pipe (25) for discharging the combustible gas, and a partition assembly (3) is arranged on a pipeline for transmitting the combustible gas between the gas outlet pipe (25) and the gas container (21); The isolating assembly (3) comprises a valve seat (31) and a valve assembly (4), a valve plate hole (311) is formed in the valve seat (31), and a pre-explosion cavity (312) is formed in one side of the valve plate hole (311); the valve assembly (4) comprises a valve plate (41) and a valve shaft (42), wherein an air hole (411) for enabling the air cavity (16) to be communicated with the air container (21) is formed in the valve plate (41), and an air guide groove (421) is formed in the valve shaft (42); The valve shaft (42) and the valve plate (41) are hermetically sleeved at a communication position and a blocking position respectively, when the valve shaft (42) is at the communication position, the air holes (411) are aligned with the air guide grooves (421), and when the valve shaft (42) is at the blocking position, the air holes (411) are staggered with the air guide grooves (421); The valve plate (41) is sleeved with the valve plate hole (311), one end of the valve shaft (42) is positioned in the pre-explosion cavity (312), and the valve shaft (42) is converted from a communication position to a blocking position and driven by combustible gas which is flash-exploded in the pre-explosion cavity (312). Preferably, the valve seat (31) is provided with more than two mutually-connected pre-explosion cavities (312), the valve plate hole (311) is internally provided with more than two mutually-connected air holes (411) for mutually connecting the valve assemblies (4), and valve shafts (42) of adjacent valve assemblies (4) are mutually staggered. Preferably, a reset cavity (313) is arranged on one side of the valve seat (31) opposite to the pre-explos