CN-224229256-U - Explosion venting device for preventing condensed water from flowing back

Abstract

The utility model discloses an explosion venting device for preventing condensed water from flowing back, and relates to the technical field of gas power generation. The sealing device comprises a sealing shell, wherein an air inlet pipe and an air outlet pipe are respectively communicated with the side face of the sealing shell, an explosion venting valve and a water draining valve are respectively arranged at the top and the bottom of the sealing shell, a sealing cylinder which is communicated with the sealing shell is further arranged at the top of the sealing shell, a first sealing gasket which can slide along the inner wall of the sealing cylinder is arranged in the sealing cylinder, a driving mechanism for driving the first sealing gasket to move is arranged at the outer end of the sealing cylinder, a second sealing gasket is arranged at one side, far away from the outer end of the sealing cylinder, of the first sealing gasket, the air inlet pipe extends to the inside of the sealing shell, and an air outlet of the air inlet pipe positioned in the sealing shell faces the second sealing gasket.

Inventors

• LI ZHONGYU

Assignees

• 北京扬德环保能源科技股份有限公司

Dates

Publication Date

20260512

Application Date

20250516

Claims (7)

1. 1. The explosion venting device for preventing the condensed water from flowing back is characterized by comprising a sealing shell, wherein the side surface of the sealing shell is respectively communicated with an air inlet pipe and an air outlet pipe, and the top and the bottom of the sealing shell are respectively provided with an explosion venting valve and a drain valve; The top of the sealing shell is also provided with a sealing cylinder communicated with the sealing shell, a first sealing gasket capable of sliding along the inner wall of the sealing cylinder is arranged in the sealing cylinder, the outer end of the sealing cylinder is provided with a driving mechanism for driving the first sealing gasket to move, one side, away from the outer end of the sealing cylinder, of the first sealing gasket is provided with a second sealing gasket, the air inlet pipe extends to the inside of the sealing shell, and the air outlet of the air inlet pipe positioned in the sealing shell faces the second sealing gasket.
2. 2. The explosion venting device for preventing condensed water from flowing back is characterized in that the driving mechanism comprises a screw rod rotatably arranged in the sealing cylinder, and further comprises a guide plate slidably arranged in the sealing cylinder, a threaded hole matched with the screw rod in a threaded mode is formed in the guide plate in a penetrating mode, a guide rail is arranged on the inner wall of the upper half portion of the sealing cylinder, and a guide groove matched with the guide rail is formed in the guide plate.
3. 3. The explosion venting device for preventing condensed water from flowing back according to claim 2, wherein a sealing cover is arranged at the top of the sealing cylinder, and the screw penetrates through the sealing cover and is connected with the sealing cover in a matched manner through a bearing seat.
4. 4. The explosion venting device for preventing condensed water from flowing back is characterized in that the first sealing gasket is in transitional connection with the guide plate through a first connecting rod, and the first sealing gasket is in transitional connection with the second sealing gasket through a second connecting rod.
5. 5. The explosion venting device for preventing condensed water from flowing back according to claim 1, wherein a part of the pipe body of the air inlet pipe, which is positioned in the sealing shell, is provided with a bending part which is bent upwards and extends, the pipe orifice of the bending part faces the second sealing pad, and the pipe orifice of the bending part is provided with a sealing port with a concave structure.
6. 6. The explosion venting device for preventing condensed water from flowing back according to claim 2, wherein the top end of the screw rod is provided with a coaxially arranged rotating handle.
7. 7. The explosion venting device for preventing condensed water from flowing back according to claim 1, wherein a drain pipe is arranged at the bottom of the sealing shell in a communicated manner, and the drain valve is arranged on the drain pipe.

Description

Explosion venting device for preventing condensed water from flowing back Technical Field The utility model relates to the technical field of mine gas power generation, in particular to an explosion venting device for preventing condensed water from flowing back. Background Coal bed gas commonly called as gas, the main component of which is CH4 (methane) is associated gas mainly existing in coal mines, and is not only a strong greenhouse effect gas and a dangerous source for coal mine safety production, but also an efficient clean energy source. In addition, a large amount of gas is discharged into the air in the coal production process, so that the carbon emission of a coal mine area is greatly increased, serious environmental pollution is caused, and the current requirements of constructing a green mine in China are not met. For a low-concentration gas generator set, only about 35% of fuel energy is converted into electric energy by the generator set, about 30% -35% of fuel energy is discharged by high-temperature flue gas, and about 20% -25% of fuel energy is taken away by cooling water of the generator set, so that the high-temperature flue gas generated by gas power generation is mostly recycled through a boiler or other equipment. In the prior art, high-temperature flue gas exhausted by gas generator sets is parallelly connected and is converged into the same main pipe for waste heat utilization of a boiler or other equipment, a set of high-temperature flue gas valve and a set of explosion venting valve are arranged on each high-temperature flue gas exhaust branch pipe of each gas generator set, and as the high-temperature flue gas valve is generally leaked inwards by more than 3%, when a plurality of gas generator sets are in parallel exhaust, if the gas generator sets are stopped or overhauled, high-temperature flue gas exhausted by other gas generator sets flows to the side of the stopped or overhauled gas generator sets through the internal leakage of the high-temperature flue gas valve, water generated after methane is combusted is contained in the high-temperature flue gas, and condensed water flows into the gas generator sets along the high-temperature exhaust pipe after the temperature is reduced, so that the starting of the gas generator sets and the service life of the gas generator sets are influenced. Disclosure of utility model The utility model aims to provide an explosion venting device for preventing condensed water from flowing back, so as to solve the problems in the background technology. The explosion venting device for preventing the condensed water from flowing back comprises a sealing shell, wherein the side surface of the sealing shell is respectively communicated with an air inlet pipe and an air outlet pipe, and the top and the bottom of the sealing shell are respectively provided with an explosion venting valve and a drain valve; The top of the sealing shell is also provided with a sealing cylinder communicated with the sealing shell, a first sealing gasket capable of sliding along the inner wall of the sealing cylinder is arranged in the sealing cylinder, the outer end of the sealing cylinder is provided with a driving mechanism for driving the first sealing gasket to move, one side, away from the outer end of the sealing cylinder, of the first sealing gasket is provided with a second sealing gasket, the air inlet pipe extends to the inside of the sealing shell, and the air outlet of the air inlet pipe positioned in the sealing shell faces the second sealing gasket. Preferably, the driving mechanism comprises a screw rod arranged in the sealing cylinder in a rotating manner, and further comprises a guide plate arranged in the sealing cylinder in a sliding manner, a threaded hole matched with the screw rod in a threaded manner is formed in the guide plate in a penetrating manner, a guide rail is arranged on the inner wall of the upper half part of the sealing cylinder, and a guide groove matched with the guide rail is formed in the guide plate. Preferably, a sealing cover is arranged at the top of the sealing cylinder, and the screw penetrates through the sealing cover and is connected with the sealing cover in a matched mode through a bearing seat. Preferably, the first sealing gasket is in transitional connection with the guide plate through a first connecting rod, and the first sealing gasket is in transitional connection with the second sealing gasket through a second connecting rod. Preferably, a part of the pipe body of the air inlet pipe positioned in the sealing shell is provided with a bending part which is bent upwards, the pipe orifice of the bending part faces the second sealing pad, and the pipe orifice of the bending part is provided with a sealing port with a concave structure. Preferably, the top end of the screw is provided with a coaxially arranged rotating handle. Preferably, the bottom of the sealing shell is communicated with a drain pipe, and the drain