CN216743842U - Fuel gas distribution device - Google Patents
Fuel gas distribution device Download PDFInfo
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- CN216743842U CN216743842U CN202122677502.6U CN202122677502U CN216743842U CN 216743842 U CN216743842 U CN 216743842U CN 202122677502 U CN202122677502 U CN 202122677502U CN 216743842 U CN216743842 U CN 216743842U
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Abstract
The utility model provides a fuel gas distribution device, which comprises a raw material gas treatment unit, a raw material gas flow automatic control unit, a gas mixing unit and a mixed gas detection and taking unit; the feed gas processing unit is used for filtering simultaneously, pressure regulating and measurement to multiple feed gas, and feed gas flow automatic control unit is used for multiple feed gas source flow of multichannel synchronous control and mixed fuel gas outflow flow, and the gas mixing unit is used for mixing the feed gas, keeping in mixed fuel gas, and mixed gas detects and takes the unit and includes that component is checked and is used chromatographic analyzer, flow controller. Compared with the prior art, the utility model can be prepared aiming at mixed gas with more components and can meet the supply requirement of large-flow mixed fuel gas.
Description
Technical Field
The utility model relates to a fuel gas preparation technology for experiments, in particular to a combustible gas preparation device.
Background
The city gas is a mixed gas composed of a plurality of single gases, and comprises methane, ethane, propane, butane, nitrogen and the like. Because of different gas sources and different treatment processes, the gas components in different regions are different. Therefore, the performance of the equipment such as engines, water heaters, cookers and the like using the gas can be ensured after testing various components of the gas.
Conventionally, each testing facility and equipment manufacturer has used standard mixed gas to test equipment. The standard mixed gas of the relevant components of the urban gas is prepared mainly by a weight method, a pressure ratio method, a mass flow ratio method, a static capacity method and a permeation tube method. In the existing measures, the gravimetric method is most accurate and most widely applied, but the method is only suitable for filling the steel cylinder, and the limited volume of the method causes that the flow rate of the mixed gas prepared by the method cannot be too large when the mixed gas is taken. From the research and development perspective of gas appliances, equipment needs to continuously and stably work under different components of gas, but the component precision requirement is not high when the equipment is tested in a factory; the flow of mixed gas required by engines and industrial combustors is large, and a small amount of gas prepared by a mass method and stored in a steel cylinder cannot meet the continuous test requirement in the research and development process.
Chinese patent (CN 101761779 a) entitled "method and apparatus for supplying mixed gas" discloses a mixed gas supply apparatus, but the mass flow rate method used in the apparatus is limited by the measurement environment and easily affects the accuracy of standard gas. Chinese patent CN 108264947 a entitled "a method for preparing mixed gas" controls the volume ratio of hydrogen gas and natural gas by adjusting the opening of a valve in a mixing box, but it is only suitable for mixing hydrogen gas into natural gas, and is not suitable for preparing mixed gas from multiple single gases.
The existing methods and equipment for preparing mixed gas cannot effectively meet the gas distribution requirements of high flow, high precision and multiple gas sources, and the automation control process degree is not enough. In order to meet the requirements of large-flow gas-using equipment on mixed gas, a set of mixed gas preparation device with multiple gas sources needs to be developed urgently.
SUMMERY OF THE UTILITY MODEL
The utility model provides a multi-gas-source and large-flow gas distribution device developed based on a static capacity method, aiming at solving the problems of insufficient precision and insufficient gas source types of the conventional large-flow mixed gas preparation device. The device fills the wet-type gas storage tank with multiple air supplies according to volume flow, takes after stirring, stewing, component analysis technology, can realize preparing the mixed gas of regulation component and taking in a large amount as required.
The purpose of the utility model can be realized by the following technical scheme:
a fuel gas distribution apparatus, comprising: the device comprises a raw material gas treatment unit, a raw material gas flow automatic control unit, a gas mixing unit and a mixed gas detection and taking unit; the raw gas treatment unit comprises a plurality of gas supply branches, and single component gas is input into a common gas distribution pipeline after being taken, regulated, filtered and measured; the raw material gas flow automatic control unit is electrically connected to the raw material gas treatment unit to detect and control the flow of the single component gas input into the common gas distribution pipeline of each single gas supply branch in real time, and is electrically connected to the mixed gas detection and taking unit to detect and control the flow of the output mixed gas in real time; the gas mixing unit is communicated to the common gas distribution pipeline so as to fully mix the mixed multiple single-component gases; the mixed gas detection and taking unit is communicated to the gas mixing unit and outputs the fully mixed gas to gas utilization equipment.
Furthermore, each gas supply branch in the raw gas treatment unit comprises a front cut-off valve, a filter, a branch front pressure gauge, a pressure stabilizing and regulating device, a rear pressure gauge, a branch flowmeter, a linkage electromagnetic valve and a branch rear cut-off valve; wherein trip valve before the branch road the filter the steady voltage regulator the branch road flowmeter with the linkage solenoid valve with the trip valve connects gradually behind the branch road, trip valve input single component is gaseous before the branch road, trip valve output single component is gaseous behind the branch road, preceding manometer sets up the filter with on the pipeline between the steady voltage regulator, back manometer sets up the steady voltage regulator with on the pipeline between branch road flowmeter and the linkage solenoid valve.
Further, the filter is a gas particulate filter; the front pressure gauge and the rear pressure gauge are diffused silicon pressure sensors.
Further, raw materials gas flow automatic control unit includes the PLC unit, the PLC unit with branch road flowmeter and linkage solenoid valve electric connection.
Further, the gas mixing unit comprises a wet gas storage tank, an inlet pipeline, an outlet pipeline, a bypass fan, a bypass cut-off valve and a tank top stirring device; the inlet pipeline with the outlet pipe is located on the wet-type gas storage tank, the by-pass pipeline communicates the inlet pipeline with the outlet pipe, the bypass fan with the bypass trip valve sets up on the by-pass pipeline, tank deck agitating unit sets up top in the wet-type gas storage tank.
Further, the tank top stirring device comprises a mixing fan and stirring equipment.
Further, the air volume of the mixing fan per hour is at least 2 times of the maximum volume in the wet air storage tank.
Further, the wet gas storage tank comprises a lower tank body, an upper tank body and a tank body height sensor, wherein the upper tank body and the tank body height sensor are hermetically buckled in the lower tank body, and the tank body height sensor is installed between the upper tank body and the lower tank body so as to acquire the position information of the upper tank body in real time.
Further, the mixed gas detection and taking unit comprises a front output cut-off valve, a temperature and pressure sensor, a chromatographic analyzer, an output flow meter, a linkage electromagnetic valve and a rear output cut-off valve; wherein trip valve before the output trip valve after the output with output flowmeter and linkage solenoid valve connect gradually, temperature pressure sensor sets up trip valve before the output with on the pipeline between the trip valve after the output, the chromatography appearance sets up trip valve after the output with on the pipeline between output flowmeter and the linkage solenoid valve.
Further, raw materials gas flow automatic control unit includes the PLC unit, the PLC unit with output flowmeter and linkage solenoid valve electric connection.
Compared with the prior art, the fuel gas distribution system has the following advantages: firstly, the device can meet the requirement that at most 14 raw material gases which are difficult to dissolve in water are prepared into mixed fuel gas according to a certain proportion by opening and closing a valve or increasing and decreasing pipelines; secondly, the system can keep more than 48 hours after gas is filled into the mixing device, and fuel gas is prepared, taken and separated, so that the requirement of large-flow gas utilization is met.
Drawings
Fig. 1 is a schematic structural view of a fuel gas distribution apparatus according to the present invention.
The notation in the figure is:
1: bypass circulating fan, 2: in-tank stirring fan, 3: a chromatographic analyzer, V0.1-V8: shut-off valve, 4: jar body position sensor, 5: common distribution pipeline, 10: raw material gas treatment unit, 20: raw material gas flow automatic control unit, 30: gas mixing unit, 40: mixed gas detection and taking unit, 100: a fuel gas distribution device, F1-F7: gas particle filter, P0-P8: diffused silicon pressure sensor, T0, T1: k-type thermocouples, S0-S7: a flowmeter and a matched electromagnetic valve.
Detailed Description
The utility model is described in detail below with reference to the figures and specific embodiments.
As shown in fig. 1, the present invention provides a fuel gas distribution apparatus 100, which includes a raw material gas processing unit 10, a raw material gas flow automatic control unit 20, a gas mixing unit 30, and a mixed gas detection and extraction unit 40. The raw gas treatment unit 10 comprises a plurality of gas supply branches, and single component gas is input into a common gas distribution pipeline 5 (also called a gas main, a main pipeline or a main pipeline) after being subjected to taking, pressure regulation, filtration and metering; the raw gas flow automatic control unit 20 is electrically connected to the raw gas treatment unit 10 to detect and control the flow of the single component gas input into the common gas distribution pipeline 5 of each single gas supply branch in real time, and is electrically connected to the mixed gas detection and taking unit 40 to detect and control the flow of the output mixed gas in real time; the gas mixing unit is communicated to the common gas distribution pipeline 5 so as to fully mix the mixed multiple single-component gases; the mixed gas detecting and taking unit 40 is connected to the gas mixing unit 30 and outputs the fully mixed gas (i.e., mixed fuel gas) to a gas-using device.
Raw material gas treatment unit 10: the gas distribution device is used for simultaneously taking, regulating pressure, filtering and metering single-component gas in a plurality of gas cylinders or gas supply pipelines, and filling the single-component gas into a common gas distribution pipeline 5; wherein each gas cylinder (containing gas 1-6 in the figure) or gas supply pipeline (corresponding pipeline gas 7 in the figure) supplying single component gas is a gas supply branch corresponding to the pipeline/pipeline connected to the common gas distribution pipeline 5.
Raw material gas flow automatic control unit 20: the flow rate of each component gas is measured in real time and is stabilized at the required flow rate through the automatic regulating electromagnetic valve.
A gas mixing unit: the gas mixing device is used for receiving each single-component gas, storing, mixing and stirring the gas, and ensures that the components of the gas to be taken are uniform and the pressure is stable.
Mixed gas detection and taking unit 40: the two ends of the gas mixing unit 30 are respectively connected with gas equipment for detecting, regulating pressure, filtering and metering the components of the mixed gas, and supplying the components for subsequent use.
The single component gases supplied are all gas sources. The raw gas treatment unit 10 comprises a plurality of gas sources connected to the main pipeline 5; the gas source comprises a pipeline gas (corresponding to the pipeline gas 7 in the figure) and six gas bottle gases (containing gas 1-6 in the figure), and each gas supply branch comprises a branch front cut-off valve V1.1-V7.1, a filter F1-F7, a front pressure gauge P1.1-P7.1, a pressure stabilizing and regulating device, a rear pressure gauge P1.2-P7.2, a branch flow meter and linkage electromagnetic valve S1-S7 and a branch rear cut-off valve V1.2-V7.2. Wherein trip valve V1.1-V7.1 before the branch road filter F1-F7 the steady voltage pressure regulator the branch road flowmeter with linkage solenoid valve S1-S7 with trip valve V1.2-V7.2 connect gradually behind the branch road, trip valve V1.1-V7.1 input single component gas before the branch road, trip valve V1.2-V7.2 output single component gas behind the branch road, preceding manometer P1.1-P7.1 set up filter F1-F7 with on the pipeline between the steady voltage pressure regulator, back manometer P1.2-P7.2 sets up steady voltage pressure regulator with on the pipeline between branch road flowmeter and linkage solenoid valve S1-S7. The filter F1-F7 is a gas particle filter; the front pressure gauge P1.1-P7.1 and the rear pressure gauge P1.2-P7.2 are diffused silicon pressure sensors.
The raw material gas flow automatic control unit 20 is composed of a PLC unit capable of receiving and sending 32 control signals and a flow meter and an electromagnetic valve connected with the PLC unit, and can compare the real-time flow of each path of gas with the preset flow and output 4-20 mA signals required by electromagnetic valve regulation, so that the gas flow is kept in accordance with the specified flow.
The gas mixing unit 30 has a maximum volume of 5m3The wet gas storage tank 6 comprises an auxiliary inlet pipeline, an outlet pipeline, a bypass fan 1, a bypass cut-off valve V8 and a tank top stirring device 2, and is used for mixing raw gas and storing mixed gas. The inlet pipeline and the outlet pipeline are arranged on the wet gas storage tank 6, the bypass pipeline is communicated with the inlet pipeline and the outlet pipeline,bypass fan 1 with bypass trip valve V8 sets up on the bypass pipeline, tank deck agitating unit 2 sets up the top in the wet gas holder 6. The tank top stirring device 2 comprises a mixing fan and stirring equipment. The hourly ventilation quantity of the mixing fan is at least 2 times of the maximum volume in the 6 tanks of the wet gas storage tank. The wet gas storage tank 6 comprises a lower tank body, an upper tank body hermetically buckled in the lower tank body and a tank body height sensor 4, wherein the tank body height sensor 4 is arranged between the upper tank body and the lower tank body so as to acquire the position information of the upper tank body in real time; the PLC unit is electrically connected to the tank height sensor 4.
The mixed gas detection and taking unit 40 is composed of a front output cut-off valve V0.1, a temperature and pressure sensor T0+ P0, a chromatographic analyzer 3, an output flow meter and linkage electromagnetic valve S0 and a rear output cut-off valve V0.2. Wherein trip valve V0.1 before the output trip valve V0.2 after the output with the output flowmeter connects gradually with linkage solenoid valve S0, temperature pressure sensor T0+ P0 sets up trip valve V0.1 before the output with on the pipeline between trip valve V0.2 after the output, chromatography appearance 3 sets up trip valve V0.2 after the output with on the pipeline between output flowmeter and the linkage solenoid valve S0. The temperature and pressure sensors include a type K thermocouple T0 and a diffused silicon pressure sensor P0. And the PLC unit is electrically connected with the output flow meter and the linkage electromagnetic valve S0.
The branch flowmeter and linkage solenoid valve S1-S7 and the output flowmeter and linkage solenoid valve S0 are both composed of flowmeters and solenoid valves and are electrically connected with the PLC unit.
A main cut-off valve V7, a K-type thermocouple T1 and a diffused silicon pressure sensor P8 are also arranged on the common gas distribution pipeline 5.
The specific operation of the fuel gas distribution apparatus 100 is as follows: connecting a PLC unit power supply, setting the PLC unit power supply to be in a gas distribution mode, and setting the type and flow of gas according to requirements; connecting steel cylinders and pipelines filled with various required gases into the raw material gas treatment unit 10, opening valves in the raw material gas treatment unit 10, closing a mixed gas detection and taking device and valves in the gas mixing unit 30; opening a valve at the inlet of the gas mixing unit 30, monitoring the flow and temperature of each path of gas in real time, and the readings of sensors P8 and T1 in the figure, wherein if the pressure exceeds 15kPa or the temperature is lower than 0 ℃, the system automatically alarms, and if the pressure exceeds 20kPa or the temperature is lower than-10 ℃, a stop valve is automatically cut off; when the tank position sensor marked as 4 in the figure detects that the mixer tank is at the highest position, the PLC automatically and simultaneously cuts off all the gas paths, manually closes the inlet of the mixer and all the cut-off valves of the raw gas treatment unit 10, and cuts off the connection of the gas cylinders; opening a valve V8, and opening circulating fans and stirring devices marked as 1 and 2 in the figure and maintaining for a certain time; turning on a chromatographic analyzer with the reference number 3 in the figure, setting the PLC unit to be in a gas use mode, setting the maximum flow rate, and turning on various cut-off valves of the mixed gas detection and extraction unit.
The mixed fuel gas component output by the embodiment contains methane, ethane, propane, butane, hydrogen, carbon dioxide and nitrogen, and more specifically, the volume ratio of methane, ethane, propane, butane, hydrogen, carbon dioxide and nitrogen is 77.18%: 1.99%: 0.50%: 0.37%: 17.33%: 0.24%: 2.68 percent and the outflow flow of the mixed fuel gas is 40m3H is the ratio of the total weight of the catalyst to the total weight of the catalyst. In order to ensure the stability of the components of the output fuel gas, a gas chromatograph for detecting the gas components is arranged on the output pipeline, and the detected gas components comprise methane, ethane, propane, n-butane, isobutane, n-pentane, isopentane, hydrogen, oxygen, carbon dioxide and nitrogen.
Compared with the prior art, the fuel gas distribution system has the following advantages: firstly, the device can meet the requirement that at most 14 raw material gases which are difficult to dissolve in water are prepared into mixed fuel gas according to a certain proportion by opening and closing a valve or increasing and decreasing pipelines; secondly, the system can keep more than 48 hours after gas is filled into the mixing device, and fuel gas is prepared, taken and separated, so that the requirement of large-flow gas utilization is met.
Claims (10)
1. A fuel gas distribution apparatus, comprising: the device comprises a raw material gas treatment unit, a raw material gas flow automatic control unit, a gas mixing unit and a mixed gas detection and taking unit;
the raw gas treatment unit comprises a plurality of gas supply branches, and single component gas is input into a common gas distribution pipeline after being taken, regulated, filtered and measured;
the raw material gas flow automatic control unit is electrically connected to the raw material gas treatment unit to detect and control the flow of the single component gas input into the common gas distribution pipeline of each single gas supply branch in real time, and is electrically connected to the mixed gas detection and taking unit to detect and control the flow of the output mixed gas in real time;
the gas mixing unit is communicated to the common gas distribution pipeline so as to fully mix the mixed multiple single-component gases;
the mixed gas detection and taking unit is communicated to the gas mixing unit and outputs the fully mixed gas to gas utilization equipment.
2. A fuel gas distribution device as claimed in claim 1, wherein each gas supply branch in the raw gas processing unit comprises a front cut-off valve, a filter, a branch front pressure gauge, a pressure stabilizing and regulating device, a back pressure gauge, a branch flow meter, a linkage electromagnetic valve and a branch back cut-off valve; wherein trip valve before the branch road the filter the steady voltage regulator the branch road flowmeter with the linkage solenoid valve with the trip valve connects gradually behind the branch road, trip valve input single component is gaseous before the branch road, trip valve output single component is gaseous behind the branch road, preceding manometer sets up the filter with on the pipeline between the steady voltage regulator, back manometer sets up the steady voltage regulator with on the pipeline between branch road flowmeter and the linkage solenoid valve.
3. A fuel gas distribution apparatus as claimed in claim 2, wherein said filter is a gas particulate filter; the front pressure gauge and the rear pressure gauge are diffused silicon pressure sensors.
4. A fuel gas distribution apparatus as claimed in claim 2, wherein said raw material gas flow automatic control unit comprises a PLC unit, and said PLC unit is electrically connected to said bypass flow meter and said linkage solenoid valve.
5. A fuel gas distribution apparatus according to claim 1, wherein the gas mixing unit comprises a wet gas storage tank, an inlet pipe, an outlet pipe, a bypass fan, a bypass cut-off valve and a tank top stirring device; the inlet pipeline with the outlet pipe is located on the wet-type gas storage tank, the by-pass pipeline communicates the inlet pipeline with the outlet pipe, the bypass fan with the bypass trip valve sets up on the by-pass pipeline, tank deck agitating unit sets up top in the wet-type gas storage tank.
6. A fuel gas distribution apparatus as claimed in claim 5 wherein the tank top agitation means comprises a mixing fan, agitation means.
7. A fuel gas distribution arrangement according to claim 6 wherein the mixing fan is ventilated at least 2 times the maximum volume of the wet gas tank per hour.
8. A fuel gas distribution apparatus as claimed in claim 5, wherein the wet gas storage tank comprises a lower tank, an upper tank hermetically engaged with the lower tank, and a tank height sensor installed between the upper tank and the lower tank to obtain position information of the upper tank in real time.
9. The fuel gas distribution device according to claim 1, wherein the mixed gas detection and extraction unit comprises a front output cut-off valve, a temperature and pressure sensor, a chromatograph, an output flow meter, a linkage solenoid valve and a rear output cut-off valve; wherein trip valve before the output trip valve after the output with the output flowmeter connects gradually with the linkage solenoid valve, temperature pressure sensor sets up trip valve before the output with on the pipeline between the trip valve after the output, the chromatographic analyzer sets up trip valve after the output with on the pipeline between output flowmeter and the linkage solenoid valve.
10. A fuel gas distribution apparatus as claimed in claim 9, wherein said raw material gas flow automatic control unit comprises a PLC unit, and said PLC unit is electrically connected to said output flow meter and a linkage solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122677502.6U CN216743842U (en) | 2021-11-04 | 2021-11-04 | Fuel gas distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122677502.6U CN216743842U (en) | 2021-11-04 | 2021-11-04 | Fuel gas distribution device |
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| Publication Number | Publication Date |
|---|---|
| CN216743842U true CN216743842U (en) | 2022-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122677502.6U Active CN216743842U (en) | 2021-11-04 | 2021-11-04 | Fuel gas distribution device |
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| CN (1) | CN216743842U (en) |
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2021
- 2021-11-04 CN CN202122677502.6U patent/CN216743842U/en active Active
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