CN212774394U - Safe and efficient low-concentration gas conveying device - Google Patents

Safe and efficient low-concentration gas conveying device Download PDF

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Publication number
CN212774394U
CN212774394U CN202021781781.XU CN202021781781U CN212774394U CN 212774394 U CN212774394 U CN 212774394U CN 202021781781 U CN202021781781 U CN 202021781781U CN 212774394 U CN212774394 U CN 212774394U
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control system
gas
electric
pipeline
emptying
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CN202021781781.XU
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贠利民
张霖
林晓
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Taiyuan Design And Research Institute Group Co ltd Of Coal Industry
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Taiyuan Design And Research Institute Group Co ltd Of Coal Industry
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Abstract

The utility model relates to the technical field of coal mine gas conveying treatment, in particular to a safe and efficient conveying device for low-concentration gas; the technical scheme includes that the device comprises a positive pressure section emptying pipeline, a first control system, an adjusting emptying pipeline and a second control system which are connected to a gas conveying pipeline, an automatic explosion suppression device and a water seal fire-retarding explosion venting device are arranged at the same time, a first flame sensor and a first electric emptying valve are arranged on the positive pressure section emptying pipeline, the first control system is connected with an automatic explosion suppression device controller through electric signals, a second flame sensor and a second electric emptying valve are arranged on the adjusting emptying pipeline, and the second control system is in signal connection with the first control system and the second electric emptying valve respectively; the problems of safety such as flameout, deflagration, blast pipe blasting, backfire of power generation equipment caused by unbalanced gas supply and demand on the basis of reducing the on-way resistance of gas conveying as much as possible of a gas power plant are solved, and therefore the safe, efficient and stable operation of a generator set is ensured.

Description

Safe and efficient low-concentration gas conveying device
Technical Field
The utility model belongs to the technical field of colliery gas is carried and is handled, specifically a high-efficient conveyor of low concentration gas safety.
Background
The emission of a large amount of low-concentration gas in a coal mine not only wastes precious clean energy, but also aggravates the influence of global greenhouse effect. Low-concentration gas power generation is one of mature gas comprehensive utilization ways, but in the power generation process, due to the fact that the concentration, the extraction amount and the conveying pressure of gas methane extracted from a mine fluctuate, power generation equipment is difficult to adapt, and accident shutdown is caused.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides a safe high-efficient conveyor of low concentration gas, solves gas power plant and reduces low concentration gas conveying system on the on-the-way resistance basis as far as possible because the gas supplies and needs unbalance causes safety problems such as power generating equipment flame-out, deflagration, blast pipe blasting, intake pipe tempering.
In order to achieve the purpose, the utility model discloses a realize through following technical scheme:
a safe and efficient low-concentration gas conveying device comprises a positive pressure section emptying pipeline and a first control system, wherein the positive pressure section emptying pipeline is connected to a low-concentration gas conveying pipeline, the low-concentration gas conveying pipeline is provided with an automatic explosion suppression device and a water seal fire-retarding explosion-venting device, the positive pressure section emptying pipeline is provided with a first flame sensor and a first electric emptying valve, the first control system is connected with an automatic explosion suppression device controller through an electric signal, and the automatic explosion suppression device controller is connected with the automatic explosion suppression device through a control signal; the device is characterized by also comprising an adjusting evacuation pipeline and a second control system, wherein the adjusting evacuation pipeline is connected to the low-concentration gas conveying pipeline and is provided with a second flame sensor and a second electric evacuation valve, the second flame sensor is in signal connection with the automatic explosion suppression device controller, and the second flame sensor and the automatic explosion suppression device are in interlocking control; and the second control system is in signal connection with the first control system and the second electric emptying valve respectively.
Furthermore, the low-concentration gas conveying pipeline is provided with an electric regulating valve, the second electric emptying valve is connected with the electric regulating valve in parallel, and the second control system is in signal connection with the electric regulating valve.
Further, low concentration gas pipeline is provided with gas concentration sensor and gas pressure sensor, second control system passes through electric signal connection with gas concentration sensor, gas pressure sensor respectively.
Further, the second control system controls the electric regulating valve to regulate and evacuate by collecting a pressure signal of the gas pressure sensor.
Further, the second control system controls the second electric evacuation valve to evacuate and cut off gas supply by collecting a concentration signal of the gas concentration sensor.
The utility model discloses produced beneficial effect for prior art does:
the utility model arranges the electric regulating valve on the low-concentration gas conveying pipeline to empty the excessive gas properly in real time, thereby ensuring the stable supply of fuel for the power generation equipment; aiming at fire source danger factors possibly occurring in the process of gas emission of an adjusting emptying pipe orifice, a fire-retardant explosion-proof device adopting two different principles of 'fire-retardant explosion-venting and explosion suppression' is adopted; a flame sensor is arranged on the adjusting emptying pipeline to realize the protection linkage with an automatic explosion suppression device arranged on a gas drainage pump station; meanwhile, an automatic explosion suppression device and a water seal fire-retarding explosion-venting device of a gas pumping station are utilized, the on-way resistance of a conveying system is reduced as much as possible, and the safety problems of flameout, deflagration, blasting of an exhaust pipe, tempering of an air inlet pipe and the like of a power generation device caused by unbalanced gas supply and demand of the low-concentration gas conveying system are solved, so that the safe, efficient and stable operation of a gas power plant is realized.
Drawings
FIG. 1 is a schematic structural view of the safe and efficient low-concentration gas conveying device of the present invention;
in the figure: 1-automatic explosion suppression device; 2-automatic explosion suppression device controller; 3-water seal fire-retardant explosion venting device; 4-a first electrically operated evacuation valve; 5, emptying the pipeline at the positive pressure section; 6-a first flame sensor; 7 — a first control system; 8-a second electrically operated evacuation valve; 9-electric regulating valve; 10, adjusting an emptying pipeline; 11 — a second flame sensor; 12-gas concentration sensor; 13-gas pressure sensor; 14 — a second control system.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
As shown in fig. 1, the low-concentration gas safe and efficient conveying device comprises a positive pressure section emptying pipeline 5 and a first control system 7, wherein the positive pressure section emptying pipeline 5 is connected to the low-concentration gas conveying pipeline and is provided with a first flame sensor 6 and a first electric emptying valve 4, the first control system 7 is connected with an automatic explosion suppression device controller 2 through electric signals, the low-concentration gas conveying pipeline is provided with an automatic explosion suppression device 1 and a water seal fire-retarding explosion-venting device 3, and the automatic explosion suppression device controller 2 is connected with the automatic explosion suppression device 1 through control signals; in addition, the device also comprises an adjusting emptying pipeline 10 and a second control system 14, wherein the adjusting emptying pipeline 10 is connected to a low-concentration gas conveying pipeline and is simultaneously provided with a second flame sensor 11 and a second electric emptying valve 8, the second flame sensor 11 is arranged in 5m below the outlet of the adjusting emptying pipeline 10, the distance from an explosion suppressor in the automatic explosion suppression device 1 (along the axial direction of the conveying pipeline) is 30-60 m, the second flame sensor 11 is in signal connection with the automatic explosion suppression device controller 2 and is in interlocking control with the automatic explosion suppression device 1, and the second control system 14 is in signal connection with the first control system 7 and the second electric emptying valve 8 respectively.
The flame signal of the automatic explosion suppression device controller 2 is provided with a plurality of input ports, and can simultaneously receive signals of a first flame sensor 6 arranged on a positive pressure section evacuation pipeline 5 of a mine gas drainage and a second flame sensor 11 arranged on an adjusting evacuation pipeline 10 of a gas power plant, when the automatic explosion suppression device controller 2 detects the flame signal of any flame sensor in the system, the automatic explosion suppression device 1 acts to automatically cut off a fire source, simultaneously sends one path of alarm signal to a second control system 14 of the gas power plant, and controls the whole-plant emergency shutdown of the gas power plant through the interlocking of the second control system 14 of the gas power plant. When the gas power plant is shut down, the second electric emptying valve 8 is controlled by the second control system 14 of the gas power plant to be emptied completely and cut off gas supply, and meanwhile, one path of alarm signal is sent to the first control system 7 of the mine gas drainage station to control the first electric emptying valve 4 of the mine gas drainage positive pressure section emptying system to be opened in an interlocking mode.
When the gas pipeline on the 5 side of the evacuation pipeline of the evacuation system of the positive pressure section for mine gas drainage or the gas power plant adjusts the 10 side of the evacuation pipeline to catch fire and explode, the water seal fire-retardant explosion venting device 3 on the conveying pipeline of the positive pressure section for mine gas drainage blocks the fire source or the explosion venting device is vented through the water seal, and the operation safety of the evacuation system of the positive pressure section for mine gas drainage is guaranteed.
When the gas power plant is in load reduction operation, the second control system 14 of the gas power plant controls the electric control valve 9 to adjust and evacuate by collecting a pressure signal of a gas pressure sensor 13 at the head end of the gas power generation safety conveying pipeline, so that the pressure stability of the gas conveying pipeline of the gas power plant is maintained, and the unit is operated safely and efficiently.
The second control system 14 of the gas power plant alarms and controls the second electric emptying valve 8 to be completely emptied and cut off gas supply by collecting the concentration of the gas concentration sensor 12 at the head end of the gas power generation safety conveying pipeline when the concentration value is smaller than a set low value (the value can be adjusted and set on site according to different gas turbine manufacturers), and simultaneously sends a path of alarm signal to the first control system 7 of the mine gas drainage station to open the first electric emptying valve 4 of the mine gas drainage positive pressure section emptying system in an interlocking control mode.
The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.

Claims (5)

1. A safe and efficient low-concentration gas conveying device comprises a positive pressure section emptying pipeline (5) and a first control system (7), wherein the positive pressure section emptying pipeline (5) is connected to the low-concentration gas conveying pipeline, the low-concentration gas conveying pipeline is provided with an automatic explosion suppression device (1) and a water seal fire-retarding explosion-venting device (3), the positive pressure section emptying pipeline (5) is provided with a first flame sensor (6) and a first electric emptying valve (4), the first control system (7) is connected with an automatic explosion suppression device controller (2) through electric signals, and the automatic explosion suppression device controller (2) is connected with the automatic explosion suppression device (1) through control signals; the device is characterized by further comprising an adjusting emptying pipeline (10) and a second control system (14), wherein the adjusting emptying pipeline (10) is connected to a low-concentration gas conveying pipeline, the adjusting emptying pipeline (10) is provided with a second flame sensor (11) and a second electric emptying valve (8), the second flame sensor (11) is in signal connection with the automatic explosion suppression device controller (2), and the second flame sensor (11) and the automatic explosion suppression device (1) are in interlocking control; the second control system (14) is respectively in signal connection with the first control system (7) and the second electric emptying valve (8).
2. The safe and efficient low-concentration gas conveying device as claimed in claim 1, wherein the low-concentration gas conveying pipeline is provided with an electric control valve (9), the second electric evacuation valve (8) is connected with the electric control valve (9) in parallel, and the second control system (14) is in signal connection with the electric control valve (9).
3. The safe and efficient low-concentration gas conveying device as claimed in claim 2, wherein the low-concentration gas conveying pipeline is provided with a gas concentration sensor (12) and a gas pressure sensor (13), and the second control system (14) is respectively connected with the gas concentration sensor (12) and the gas pressure sensor (13) through electric signals.
4. A safe and efficient low-concentration gas conveying device as claimed in claim 3, wherein the second control system (14) is used for controlling the electric regulating valve (9) to regulate and evacuate by collecting a pressure signal of the gas pressure sensor (13).
5. A safe and efficient low-concentration gas conveying device as claimed in claim 3, wherein the second control system (14) controls the second electric evacuation valve (8) to evacuate and cut off the gas supply by collecting the concentration signal of the gas concentration sensor (12).
CN202021781781.XU 2020-08-24 2020-08-24 Safe and efficient low-concentration gas conveying device Active CN212774394U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021781781.XU CN212774394U (en) 2020-08-24 2020-08-24 Safe and efficient low-concentration gas conveying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021781781.XU CN212774394U (en) 2020-08-24 2020-08-24 Safe and efficient low-concentration gas conveying device

Publications (1)

Publication Number Publication Date
CN212774394U true CN212774394U (en) 2021-03-23

Family

ID=75054302

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021781781.XU Active CN212774394U (en) 2020-08-24 2020-08-24 Safe and efficient low-concentration gas conveying device

Country Status (1)

Country Link
CN (1) CN212774394U (en)

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