CN210831429U - Double-circuit fuel gas supply system - Google Patents
Double-circuit fuel gas supply system Download PDFInfo
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- CN210831429U CN210831429U CN201921493700.3U CN201921493700U CN210831429U CN 210831429 U CN210831429 U CN 210831429U CN 201921493700 U CN201921493700 U CN 201921493700U CN 210831429 U CN210831429 U CN 210831429U
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- fuel gas
- gas supply
- supply system
- detection device
- pressure gauge
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Abstract
The utility model discloses a double-circuit fuel gas supply system relates to the fuel gas supply technical field in the testing process, including detection device and parallelly connected two way fuel gas supply system who inserts detection device, wherein fuel gas air feed system all the way passes through fuel gas generator and is the detection device air feed, and another way fuel gas supply system is the detection device air feed through two fuel gas cylinder air feeds. The beneficial effects of the utility model are that, structural design is novel reasonable, adopts parallelly connected two tunnel fuel gas supply system to supply with the fuel gas for detection device, guarantees that the fuel gas supplies with continuation and stability, and PLC control has realized the timely automatic switch-over of fuel gas supply mode, has improved degree of automation, reduction maintenance volume, reduction in production cost, has ensured the incessant, reliable and stable operation of fixed pollution source VOCs on-line monitoring system, total hydrocarbon concentration analyzer, has indirectly ensured the normal operating of production.
Description
Technical Field
The utility model relates to a fuel gas supply technical field in the testing process especially relates to a double-circuit fuel gas supply system.
Background
When the fixed pollution source VOCs on-line monitoring system based on the gas chromatography and the total hydrocarbon concentration analyzer based on the FID principle work normally, stable fuel gas needs to be supplied externally. Generally, if the flow rate of the fuel gas supply is low, the sensitivity of the detection device is low, and even the detection device is flameout, so that the detection process cannot be carried out; if the flow rate of the fuel gas supply is high, the fire noise during the detection process becomes large, and the stability also becomes poor.
Currently, in the existing fuel gas supply systems, a fuel gas cylinder or a fuel gas generator is mostly adopted, and alternatively, a detection device is used for independently supplying fuel gas. The fuel gas cylinder supply mode has low gas supply automation degree and large maintenance amount, and the outlet pressure of the gas cylinder needs to be regularly checked and adjusted, so that the workload is large; although the supply mode of the fuel gas generator has high automation degree, the purchase and maintenance cost is high, and the fuel gas generator is not suitable for redundant configuration. In addition, the two ways of supplying fuel gas lack the functions of real-time flow detection, pressure detection and regulation of the fuel gas, and the long-time stable operation of a fixed pollution source VOCs on-line monitoring system and a total hydrocarbon concentration analyzer is difficult to guarantee.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems of unstable fuel gas supply and low automation degree, the utility model discloses a double-path fuel gas supply system.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a double-path fuel gas supply system comprises a detection device and two paths of fuel gas supply systems connected in parallel with the detection device, wherein one path of fuel gas supply system supplies gas for the detection device through a fuel gas generator, and the other path of fuel gas supply system supplies gas for the detection device through two fuel gas cylinders.
The technical scheme of the utility model still include, the trachea line of fuel gas generator export inserts detection device's fuel gas entry, sets gradually first filter, first fuel gas flowmeter, first pressure gauge and first solenoid valve on this trachea line.
The technical proposal of the utility model also comprises that the fuel gas generator selects the hydrogen generator.
The technical scheme of the utility model still include, two fuel gas cylinders are parallelly connected continuous first fuel gas cylinder and second fuel gas cylinder, the gas pipeline of first fuel gas cylinder and second fuel gas cylinder export inserts detection device's fuel gas entry, sets gradually second filter, second fuel gas flowmeter, second pressure gauge and second solenoid valve on the gas pipeline.
The technical scheme of the utility model still include, still be provided with PLC in the fuel gas supply system, first fuel gas flowmeter, first pressure gauge, first solenoid valve, second fuel gas flowmeter, second pressure gauge and second solenoid valve link to each other with PLC respectively.
The beneficial effects of the utility model are that, structural design is novel reasonable, adopt parallelly connected two way fuel gas supply system to supply with the fuel gas for detection device, two way fuel gas supply system can be directly according to fuel gas flow, pressure signal in the gas pipeline, and through PLC automatic control, the break-make of rationally selecting the fuel gas supply path has been carried out, fuel gas supply continuity and stability have been guaranteed, realize the timely automatic switch-over of fuel gas supply mode, fixed pollution source VOCs on-line monitoring, total hydrocarbon concentration analyzer's degree of automation has been promoted.
To sum up, the utility model provides high degree of automation, reduction maintenance volume, reduction in production cost have ensured incessant, the reliable and stable operation of fixed pollution source VOCs on-line monitoring system, total hydrocarbon concentration analysis appearance, have indirectly ensured the normal operating of production.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein, 1-a detection device; 2-a fuel gas generator; 3-PLC; 4-a first filter; 5-a first fuel gas flow meter; 6-a first pressure gauge; 7-a first solenoid valve; 8-a first fuel gas cylinder; 9-a second fuel gas cylinder; 10-a second filter; 11-a second fuel gas flow meter; 12-a second pressure gauge; 13-second solenoid valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
The utility model discloses an application of double-circuit fuel gas supply system in fixed pollution sources VOCs on-line monitoring, on-line monitoring is based on gas chromatography.
The double-circuit fuel gas supply system who adopts, as shown in figure 1, including detection device 1 and the two-circuit fuel gas supply system of parallelly connected access detection device 1, detection device 1 adopt among the prior art commonly used VOCs on-line monitoring equipment can, wherein one way fuel gas air supply system passes through fuel gas generator 2 and is detection device 1 air feed, another way fuel gas supply system passes through two fuel gas cylinder air feeds and is detection device 1 air feed, wherein one way fuel gas air supply system when using appears unusually, this way fuel gas air feed is closed, another way fuel gas air feed is opened.
Particularly, an air pipeline at the outlet of the fuel gas generator 2 is connected to a fuel gas inlet of the detection device 1, a first filter 4, a first fuel gas flowmeter 5, a first pressure gauge 6 and a first electromagnetic valve 7 are sequentially arranged on the air pipeline, the first filter 4 is used for filtering fuel gas generated by the fuel gas generator 2, the fuel gas filtering function can be realized by adopting the filter in the prior art, the first fuel gas flowmeter 5 and the first pressure gauge 6 are respectively used for detecting the flow and the pressure of the fuel gas in the air pipeline, and the first electromagnetic valve 7 is used for controlling the opening or closing of the supply of the fuel gas.
In particular, the fuel gas generator 2 is a hydrogen generator, and of course, the fuel gas generator can be reasonably configured according to the requirements of an actual detection device.
Particularly, the two fuel gas cylinders are a first fuel gas cylinder 8 and a second fuel gas cylinder 9 connected in parallel, gas pipelines at the outlets of the first fuel gas cylinder 8 and the second fuel gas cylinder 9 are connected to a fuel gas inlet of the detection device 1, a second filter 10, a second fuel gas flow meter 11, a second pressure gauge 12 and a second electromagnetic valve 13 are sequentially arranged on the gas pipelines, the second filter 10 is used for filtering the fuel gas generated by the fuel gas generator 2, the second fuel gas flow meter 11 and the second pressure gauge 12 are respectively used for detecting the flow rate and the pressure of the fuel gas in the gas pipelines, and the second electromagnetic valve 13 is used for controlling the supply of the fuel gas.
Particularly, the fuel gas supply system is also provided with a PLC3, the first fuel gas flowmeter 5, the first pressure gauge 6, the first electromagnetic valve 7, the second fuel gas flowmeter 11, the second pressure gauge 12 and the second electromagnetic valve 13 are respectively connected with the PLC3, the PLC3 can automatically detect the pressure and flow values in the two paths of fuel gas passages at the same time, and if the pressure or flow data in one path of fuel gas supply system is abnormal, the PLC3 can control the first electromagnetic valve 7 or the second electromagnetic valve 13 to be opened or closed, so that the automatic switching of the two paths of fuel gas supply systems is realized, and the uninterrupted, stable and reliable operation of the online monitoring process of the fixed pollution source VOCs based on the gas chromatography is ensured.
Example 2
The utility model discloses an application of double-circuit fuel gas feed system in total hydrocarbon concentration analysis appearance, total hydrocarbon concentration analysis is based on the FID principle.
The adopted two-way fuel gas supply system comprises a detection device 1 and two fuel gas supply systems connected in parallel to the detection device 1, wherein the detection device 1 adopts a general hydrocarbon analyzer commonly used in the prior art, one fuel gas supply system supplies gas for the detection device 1 through a fuel gas generator 2, and the other fuel gas supply system supplies gas for the detection device 1 through two fuel gas cylinders.
Particularly, a gas pipeline at the outlet of the fuel gas generator 2 is connected to a fuel gas inlet of the detection device 1, a first filter 4, a first fuel gas flow meter 5, a first pressure gauge 6 and a first electromagnetic valve 7 are sequentially arranged on the gas pipeline, the first filter 4 is used for filtering the fuel gas generated by the fuel gas generator 2, the first fuel gas flow meter 5 and the first pressure gauge 6 are respectively used for detecting the flow rate and the pressure of the fuel gas in the gas pipeline, and the first electromagnetic valve 7 is used for controlling the on or off of the supply of the fuel gas.
In particular, the fuel gas generator 2 is a hydrogen generator, and of course, the fuel gas generator can be reasonably configured according to the requirements of an actual detection device.
Particularly, the two fuel gas cylinders are a first fuel gas cylinder 8 and a second fuel gas cylinder 9 connected in parallel, gas pipelines at the outlets of the first fuel gas cylinder 8 and the second fuel gas cylinder 9 are connected to a fuel gas inlet of the detection device 1, a second filter 10, a second fuel gas flow meter 11, a second pressure gauge 12 and a second electromagnetic valve 13 are sequentially arranged on the gas pipelines, the second filter 10 is used for filtering the fuel gas generated by the fuel gas generator 2, the fuel gas filtering function can be realized by adopting the filter in the prior art, the second fuel gas flow meter 11 and the second pressure gauge 12 are respectively used for detecting the flow rate and the pressure of the fuel gas in the gas pipelines, and the second electromagnetic valve 13 is used for controlling the on or off of the fuel gas supplied by the pipelines.
Particularly, the fuel gas supply system is also provided with a PLC3, the first fuel gas flowmeter 5, the first pressure gauge 6, the first electromagnetic valve 7, the second fuel gas flowmeter 11, the second pressure gauge 12 and the second electromagnetic valve 13 are respectively connected with the PLC3, the PLC3 can automatically detect the pressure and flow values in the two fuel gas passages at the same time, and if the pressure or flow data in one fuel gas supply system is abnormal, the PLC3 can control the opening or closing of the first electromagnetic valve 7 or the second electromagnetic valve 13, so that the automatic switching of the two fuel gas supply systems is realized, and the continuous, stable and reliable operation of the total hydrocarbon concentration analyzer based on the FID principle is ensured.
The utility model discloses a working process does:
in the double-path fuel gas supply system, pressure and flow data in two paths of fuel gas passages can be automatically and accurately detected through a PLC3, when the pressure or flow value of one path of fuel gas passage is abnormal, the first electromagnetic valve 7 or the second electromagnetic valve 13 which controls the path of fuel gas passage can be automatically closed, meanwhile, the second electromagnetic valve 13 or the first electromagnetic valve 7 which controls the switch of the other path of fuel gas passage can be automatically opened, and the fuel gas supply can be automatically switched to the other path of fuel gas supply. Meanwhile, the fuel gas supply system prompts abnormal conditions, so that an abnormal fuel gas supply passage can be timely and accurately overhauled.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (5)
1. A double-path fuel gas supply system is characterized by comprising a detection device and two paths of fuel gas supply systems connected in parallel with the detection device, wherein one path of fuel gas supply system supplies gas for the detection device through a fuel gas generator, and the other path of fuel gas supply system supplies gas for the detection device through two fuel gas cylinders.
2. A dual fuel gas supply system as claimed in claim 1, wherein a gas line from an outlet of said fuel gas generator is connected to a fuel gas inlet of said detecting means, and a first filter, a first fuel gas flow meter, a first pressure gauge and a first solenoid valve are provided in said gas line in this order.
3. A dual fuel gas supply system as defined in claim 1 wherein said fuel gas generator is a hydrogen gas generator.
4. A two-way fuel gas supply system according to claim 2, wherein the two fuel gas cylinders are a first fuel gas cylinder and a second fuel gas cylinder connected in parallel, gas pipelines at the outlets of the first fuel gas cylinder and the second fuel gas cylinder are connected to the fuel gas inlet of the detection device, and a second filter, a second fuel gas flow meter, a second pressure gauge and a second electromagnetic valve are sequentially arranged on the gas pipelines.
5. A two-way fuel gas supply system according to claim 4, wherein a PLC is further provided in the fuel gas supply system, and the first fuel gas flow meter, the first pressure gauge, the first solenoid valve, the second fuel gas flow meter, the second pressure gauge and the second solenoid valve are respectively connected to the PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921493700.3U CN210831429U (en) | 2019-09-10 | 2019-09-10 | Double-circuit fuel gas supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921493700.3U CN210831429U (en) | 2019-09-10 | 2019-09-10 | Double-circuit fuel gas supply system |
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| CN210831429U true CN210831429U (en) | 2020-06-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500504A (en) * | 2019-09-10 | 2019-11-26 | 青岛诺诚化学品安全科技有限公司 | A kind of two-way fuel gas feed system and its application |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500504A (en) * | 2019-09-10 | 2019-11-26 | 青岛诺诚化学品安全科技有限公司 | A kind of two-way fuel gas feed system and its application |
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