CN215174183U - Natural gas and gas mixing device - Google Patents
Natural gas and gas mixing device Download PDFInfo
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- CN215174183U CN215174183U CN202120537201.0U CN202120537201U CN215174183U CN 215174183 U CN215174183 U CN 215174183U CN 202120537201 U CN202120537201 U CN 202120537201U CN 215174183 U CN215174183 U CN 215174183U
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Abstract
The utility model discloses a natural gas mixing device, including natural gas pipeline, be equipped with pressure transmitter, ball valve, urgent automatic cutout valve, relief valve, pneumatic proportional control valve, flowmeter, check valve on the pipeline, all be equipped with methane on-line measuring instrument before the gas mixing simultaneously and after the gas mixing, two kinds of gases are carried downstream after passing through static mixer intensive mixing. The control system comprises a pressure transmitter, a speed transmitter, a flow rate and speed valve, a flow meter and a PLC control system. The control mode is that the flow of the natural gas is calculated according to the set mixing proportion, the corresponding flow of the gas is obtained, and the flow of the gas is equal to the calculated flow by controlling the throughput of the regulating valve, thereby achieving the proportional mixing of the natural gas and the gas. When the natural gas flow changes, the control system also continuously controls the opening of the regulating valve, so that the flow of the gas changes along with the flow of the natural gas according to a set proportion.
Description
Technical Field
The utility model relates to a gas is carried and the transportation field specifically is a natural gas mixing device.
Background
Most of gas generated in the existing coal mining is directly emptied, so that environmental pollution and resource waste are caused. The gas mixing is a process of mixing gas and natural gas, and a common gas mixing device mixes a plurality of combustible gases in a pipeline, but the gas is easily mixed unevenly only by the way of mixing in the pipeline, so that the precision of the mixed gas cannot be controlled, raw materials are wasted, and the direct mixing safety is poor. Therefore, it is necessary to improve the existing gas mixing method completely relying on pipeline mixing to improve the gas mixing efficiency.
Based on this, the utility model designs a natural gas mixing device to solve the above-mentioned problem.
Disclosure of Invention
An object of the utility model is to provide a natural gas mixing device to solve the above-mentioned uncontrollable gas mixture precision that mentions, the gas mixture burning scheduling problem inadequately. The utility model provides an adopt intelligent control module to control pneumatic control valve, adopt PID follow-up mode to come the aperture size of control flap to reach the mesh of adjusting the gas mixture component proportion.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a natural gas mixing device, including natural gas pipeline, the last pressure transmitter that is equipped with of natural gas pipeline, a plurality of ball valves, automatic emergency cut-off valve, the relief valve, pneumatic proportional control valve, the natural gas flowmeter, the check valve, the last pressure transmitter that is equipped with of gas pipeline, a plurality of ball valves, automatic emergency cut-off valve, the relief valve, pneumatic proportional control valve, the gas flowmeter, the check valve, two methane on-line measuring instruments are equipped with respectively around, two kinds of gas are respectively by natural gas pipeline and gas pipeline through the back of static mixer intensive mixing, be connected with binary gas mixture pipeline and carry.
The natural gas and gas mixing device is characterized in that the plurality of pressure transmitters, the two speed transmitters, the two flow speed valves, the natural gas flowmeter and the gas flowmeter are connected with the PLC control system through data lines.
In the natural gas and gas mixing device, the PLC control system is connected with the speed transmitter and then controls the emergency automatic cut-off valve.
In the natural gas and gas mixing device, the PLC control system is connected with the flow velocity valve and then controls the pneumatic proportion regulating valve.
According to the natural gas and gas mixing device, the PLC control system reads data of the natural gas flow meter, and meanwhile, the PLC control system reads data of the gas flow meter.
The beneficial effects of the utility model are that, this kind of natural gas mixing device structural design is novel, through intelligent analysis module, reads the flow of the natural gas of measuring in real time, calculates according to the mixture ratio of setting for, solves the flow of the gas that corresponds. This kind of natural gas mixing device chooses pneumatic control valve for use, compares electrical control valve, and stability and security further improve. The natural gas and gas mixing device adopts intelligent PID adjustment, can achieve real-time adjustment, and is free of delay. This kind of natural gas mixing device chooses for use binary static mixer, and gas mixing is more abundant.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic view of the present invention.
Fig. 2 is a block diagram of the working principle of the present invention.
In the figure, 1, a natural gas conveying pipeline, 2, a pressure transmitter, 3, a ball valve, 4, a speed transmitter, 5, an emergency automatic cut-off valve, 6, a safety valve, 7, a flow velocity valve, 8, a pneumatic proportion adjusting valve, 9, a natural gas flowmeter, 10, a gas flowmeter, 11, a check valve, 12, a gas conveying pipeline, 13, a methane online detection instrument, 14, a static mixer, 15, a PLC (programmable logic controller) system and 16, a binary mixed gas conveying pipeline are arranged.
Detailed Description
[ example 1 ]
Natural gas mixing device, including natural gas pipeline 1, gas pipeline 12, be equipped with pressure transmitter 2 on the natural gas pipeline 1, a plurality of ball valves 3, automatic emergency cut-off valve 5, relief valve 6, pneumatic proportional control valve 8, natural gas flowmeter 9, check valve 11, be equipped with pressure transmitter 2 on the gas pipeline 12, a plurality of ball valves 3, automatic emergency cut-off valve 5, relief valve 6, pneumatic proportional control valve 8, gas flowmeter 10, check valve 11, be equipped with two methane on-line measuring instrument 13 around respectively, two kinds of gas are respectively by natural gas pipeline 1 and gas pipeline 12 through the 14 intensive mixing back of static mixer, be connected with binary mixture pipeline 16 and carry. The control system comprises a plurality of pressure transmitters 2, two speed transmitters 4, two flow velocity valves 7, a natural gas flowmeter 9 and a gas flowmeter 10 which are connected with a PLC control system 15 through data lines.
The control mode of the natural gas and gas mixing device is that the instantaneous flow measured by the natural gas flowmeter 9 is transmitted back to the PLC control system 15 through a data line, the PLC control system 15 calculates according to the mixing proportion of two gases which are set in advance to obtain the required corresponding instantaneous flow of the gas, meanwhile, the instantaneous flow of the current gas flowmeter 10 is transmitted back to the PLC control system 15, the PLC control system 15 continuously adjusts the pneumatic proportion adjusting valve 8 through the flow velocity valve 7 for controlling the gas path until the instantaneous flow of the gas flowmeter 10 is equal to the calculated required corresponding instantaneous flow of the gas. Thus, the purpose of mixing natural gas and gas according to the proportion is achieved.
[ example 2 ]
The control mode of the natural gas and gas mixing device is that when the instantaneous flow measured by the natural gas flow meter 9 changes, the PLC control system 15 also continuously controls the flow velocity valve 7 of the gas path and then continuously adjusts the pneumatic proportion adjusting valve 8, so that the instantaneous flow of the gas changes along with the instantaneous flow of the natural gas according to a set proportion. The two gases are measured by a natural gas flowmeter 9 and a gas flowmeter 10, and then enter a static mixer 14 at the same time, and are conveyed to a downstream user through a binary mixed gas conveying pipeline 16.
Claims (5)
1. A natural gas and gas mixing device comprises a natural gas conveying pipeline (1) and a gas conveying pipeline (12), wherein a pressure transmitter (2), a plurality of ball valves (3), an emergency automatic cut-off valve (5), a safety valve (6), a pneumatic proportion regulating valve (8) and a natural gas flowmeter (9) are arranged on the natural gas conveying pipeline (1), check valve (11), pressure transmitter (2), a plurality of ball valves (3), urgent automatic shutoff valve (5), relief valve (6), pneumatic proportional control valve (8), gas flowmeter (10), check valve (11) are equipped with on gas pipeline (12), two methane on-line measuring instrument (13) are equipped with respectively around, two kinds of gas are passed through static mixer (14) intensive mixing back by natural gas pipeline (1) and gas pipeline (12) respectively, are connected with binary mixture pipeline (16) and carry.
2. The natural gas and gas blending device according to claim 1, wherein the plurality of pressure transmitters (2), the two speed transmitters (4), the two flow rate and speed valves (7), the natural gas flowmeter (9) and the gas flowmeter (10) are connected with the PLC control system (15) through data lines.
3. The natural gas and gas blending device according to claim 2, wherein the PLC control system (15) is connected to the speed transmitter (4) and then controls the automatic emergency shut-off valve (5).
4. The natural gas and gas blending device according to claim 3, wherein the PLC control system (15) is connected to the flow velocity valve (7) and then controls the pneumatic proportional control valve (8).
5. The natural gas and gas blending device according to claim 4, wherein the PLC control system (15) reads data from the natural gas flow meter (9) and the PLC control system (15) reads data from the gas flow meter (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120537201.0U CN215174183U (en) | 2021-03-16 | 2021-03-16 | Natural gas and gas mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120537201.0U CN215174183U (en) | 2021-03-16 | 2021-03-16 | Natural gas and gas mixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215174183U true CN215174183U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120537201.0U Active CN215174183U (en) | 2021-03-16 | 2021-03-16 | Natural gas and gas mixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215174183U (en) |
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2021
- 2021-03-16 CN CN202120537201.0U patent/CN215174183U/en active Active
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