CN203963504U - The stable system of heating value of natural gas - Google Patents
The stable system of heating value of natural gas Download PDFInfo
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- CN203963504U CN203963504U CN201420360367.XU CN201420360367U CN203963504U CN 203963504 U CN203963504 U CN 203963504U CN 201420360367 U CN201420360367 U CN 201420360367U CN 203963504 U CN203963504 U CN 203963504U
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Abstract
A kind of stable system of heating value of natural gas, comprise rock gas input assembly, air input assembly, alkane input assembly, mixer, calorific value detection device and control gear, rock gas input assembly, air input assembly, alkane input assembly are all communicated with mixer by pipeline, calorific value detection device is arranged on the output pipeline of mixer, and is connected with control gear electrical signal.Rock gas input assembly, the pipeline at air input assembly and alkane input assembly place is equipped with flow and takes into account modulating valve, the gas discharge that the first flow meter of the mixed gas calorific value that control gear detects according to calorific value detection device and rock gas input assembly place pipeline detects, according to the second flowmeter or the 3rd flowmeter, calculate alkane volume or the volume of air that needs interpolation, the modulating valve of controlling alkane input assembly or air input assembly place pipeline makes the paraffin gas or the volume of air that need enter mixer, thereby the calorific value of controlling rock gas is stabilized in a particular value, ensure the normal operation of Thermal Equipment.
Description
Technical field
The utility model belongs to rock gas and supplies with transportation art, particularly relates to a kind of stable system of heating value of natural gas.
Background technique
Due to the continuous enhancing of the growing and environmental consciousness of energy demand, rock gas is as a kind of high-quality and efficient clean energy resource, and the discharge of its carbon dioxide and nitrogen oxide is only half-sum 1/5th left and right of coal, and the discharge of sulfur dioxide is almost nil.
Yet rock gas is a kind of multi-component mixed gaseous fossil fuel, place of production difference causes its calorific value difference huge, for the Thermal Equipment stable operation of Yong Qi enterprise, has formed threat.
Model utility content
Based on this, be necessary to provide a kind of stable system of heating value of natural gas, can stablize the calorific value of rock gas, ensure the normal operation of Thermal Equipment.
A stable system for heating value of natural gas, comprises rock gas input assembly, air input assembly, alkane input assembly, mixer, calorific value detection device and control gear;
Described rock gas input assembly, air input assembly, alkane input assembly is all connected with described mixer by pipeline, the pipeline that connects described rock gas input assembly and described mixer is provided with first flow meter, the pipeline that connects described air input assembly and described mixer is provided with the second flowmeter and the first modulating valve, the pipeline that connects described alkane input assembly and described mixer is provided with the 3rd flowmeter and the second modulating valve, described calorific value detection device is arranged on the output pipeline of described mixer, described calorific value detection device can detect the calorific value of the mixed gas in the output pipeline of described mixer, described control gear respectively with described calorific value detection device, first flow, the second flowmeter, the 3rd flowmeter, the first modulating valve and the second modulating valve meter electrical signal connect, and the calorific value that described control gear can detect according to described calorific value detection device and the flow value of described first flow meter are to control at least one unlatching in described the first modulating valve and the second modulating valve.
In an embodiment therein, connect on the pipeline of described air input assembly and described mixer and be also provided with the first cut-off valve, connect on the pipeline of described alkane input assembly and described mixer and be also provided with the second cut-off valve, described the first cut-off valve is all connected with described control gear electrical signal with the second cut-off valve.
In an embodiment therein, the output pipeline of described mixer is provided with oxygen content meter, described oxygen content meter is connected with described control gear electrical signal, described oxygen content meter can detect the oxygen content value of the gas in the output pipeline of described mixer, and controls at least one unlatching in described the first cut-off valve and the second cut-off valve.
In an embodiment therein, on the output pipeline of described mixer, be also provided with a safety valve.
In an embodiment therein, connect on the pipeline of described rock gas input assembly and described mixer and be also provided with the first pressure regulator valve, connect on the pipeline of described air input assembly and described mixer and be also provided with the second pressure regulator valve, connect on the pipeline of described alkane input assembly and described mixer and be also provided with the 3rd pressure regulator valve, described the first pressure regulator valve, the second pressure regulator valve and the 3rd pressure regulator valve are all connected with described control gear electrical signal.
In an embodiment therein, connect on the pipeline of described air input assembly and described mixer and be also provided with the first safety check, connect on the pipeline of described alkane input assembly and described mixer and be also provided with the second safety check.
In an embodiment therein, described first flow meter, the second flowmeter and the 3rd flowmeter are turbine flowmeter.
In an embodiment therein, described control gear is programmable logic control device.
In an embodiment therein, described mixer is static mixer.
The stable system of above-mentioned heating value of natural gas comprises rock gas input assembly, air input assembly, alkane input assembly, mixer, calorific value detection device and control gear, rock gas input assembly, air input assembly, alkane input assembly are all communicated with mixer by pipeline, calorific value detection device is arranged on the output pipeline of mixer, and is connected with control gear electrical signal.Rock gas input assembly, the pipeline at air input assembly and alkane input assembly place is equipped with flow and takes into account modulating valve, the gas discharge that the first flow meter of the mixed gas calorific value that control gear detects according to calorific value detection device and rock gas input assembly place pipeline detects, according to the second flowmeter or the 3rd flowmeter, calculate alkane volume or the volume of air that needs interpolation, the modulating valve of controlling alkane input assembly or air input assembly place pipeline makes the paraffin gas or the volume of air that need enter mixer, thereby the calorific value of controlling rock gas is stabilized in a particular value, ensure the normal operation of Thermal Equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation of stable system of the heating value of natural gas of a mode of execution;
Description of reference numerals is as follows:
The stable system of 10 heating value of natural gas,
100 rock gas input assemblys, 110 first flow meters, 120 first pressure regulator valves;
200 air input assemblys, 210 second flowmeters, 220 first modulating valve, 230 second pressure regulator valves, 240 first cut-off valves, 250 first safety check;
300 alkane input assemblys, 310 the 3rd flowmeters, 320 second modulating valve, 330 the 3rd pressure regulator valves, 340 second cut-off valves, 350 second safety check;
400 mixers, 410 oxygen content meters, 420 safety valves;
500 calorific value detection devices;
600 control gear.
Embodiment
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.In accompanying drawing, provided preferred embodiment of the present invention.But the present invention can realize in many different forms, be not limited to embodiment described herein.On the contrary, providing these embodiments' object is to make to the understanding of disclosure of the present invention more thoroughly comprehensively.
It should be noted that, when element is called as " being fixed on " another element, can directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may have centering elements simultaneously.Term as used herein " vertical ", " level ", " left side ", " right side " and similar statement are just for illustrative purposes.
Unless otherwise defined, all technology of using are herein identical with the implication that belongs to the common understanding of those skilled in the art of the present invention with scientific terminology.The term using in specification of the present invention herein, just in order to describe the object of specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise one or more relevant Listed Items arbitrarily with all combinations.
Refer to Fig. 1, the stable system 10 of the heating value of natural gas of a mode of execution, comprises rock gas input assembly 100, air input assembly 200, alkane input assembly 300, mixer 400, calorific value detection device 500 and control gear 600.
Rock gas input assembly 100 is for delivery of rock gas.
Air input assembly 200 is for delivery of air.
Alkane input assembly 300 is for delivery of alkane.Wherein, alkane can be propane.
Mixer 400 can be static mixer.Rock gas input assembly 100, air input assembly 200, alkane input assembly 300 are all communicated with mixer 400 by pipeline.
Wherein, connect rock gas input assembly 100 and be provided with first flow meter 110 with the pipeline of mixer 400, the pipeline that connects air input assembly 200 and mixer 400 is provided with the second flowmeter 210 and the first modulating valve 220, connects alkane input assembly 300 and is provided with the 3rd flowmeter 310 and the second modulating valve 320 with the pipeline of mixer 400.
Calorific value detection device 500 is arranged on the output pipeline of mixer 400, and is connected the calorific value of the mixed gas in the output pipeline of calorific value detection device 500 detection mixer 400 with control gear 600 electrical signal.
Control gear 600 can be programmable logic control device.Be appreciated that in other embodiments, control gear 600 can be also 51 single-chip microcomputers, AVR single-chip microcomputer or flush bonding processor.
Control gear 600 is connected with calorific value detection device 500, first flow meter 110, the second flowmeter 210, the 3rd flowmeter 310, the first modulating valve 220 and the second modulating valve 320 electrical signal respectively, and the natural gas flow value of control gear 600 calorific values that can detect according to calorific value detection device 500 and first flow meter 110 is to control at least one unlatching in the first modulating valve 220 and the second modulating valve 320.
In the present embodiment, first flow meter 110, the second flowmeter 210 and the 3rd flowmeter 310 all adopt turbine flowmeter.The gas flow that first flow meter 110 calculates in rock gas input assembly 100, the gas flow that the second flowmeter 210 calculates in air input assembly 200, the gas flow that the 3rd flowmeter 310 calculates in alkane input assembly 300.Turbine flowmeter adopts that double liquid crystal is on-the-spot to be shown, has mechanism's compactness, reading is visual and clear, reliability is high, be not subject to extraneous power supply interference, anti-lightning, low cost and other advantages.
Acting as of the first modulating valve 220 and the second modulating valve 320: the data that record according to the second flowmeter 210 and the 3rd flowmeter 310, control gear 600 is controlled the gas flow that the first modulating valve 220 and the second modulating valve 320 change in air input assemblys 200 and alkane input assembly 300.
The mixed gas calorific value detecting when calorific value detection device 500 lower than set calorific value time, the mixed gas calorific value that control gear 600 detects according to the detected natural gas flow value of the first flow meter 110 in rock gas input assembly 100 and calorific value detection device 500, controls the unlatching of the second modulating valve 320 on alkane input assembly 300 place pipelines.
The mixed gas calorific value detecting when calorific value detection device 500 higher than set calorific value time, the mixed gas calorific value that control gear 600 detects according to the detected natural gas flow value of the first flow meter 110 in rock gas input assembly 100 and calorific value detection device 500, controls the unlatching of the first modulating valve 220 on air input assembly 200 place pipelines.
Connect on the pipeline of described rock gas input assembly 100 and described mixer 400 and be also provided with the first pressure regulator valve 120.On the pipeline of connection air input assembly 200 and mixer 400, be also provided with the second pressure regulator valve 230.On the pipeline of connection alkane input assembly 300 and mixer 400, be also provided with the 3rd pressure regulator valve 330.The first pressure regulation, the second pressure regulator valve 230 and the 3rd pressure regulator valve 330 are all connected with control gear 600 electrical signal.When pressure in pipeline is excessive, control gear 600 is controlled the pressure that the first pressure regulator valves 120, the second pressure regulator valve 230 and the 3rd pressure regulator valve 330 regulate in pipelines, prevents that its pressure is excessive, causes pipe surface to depart from, and gas leakage is dangerous large.
Further, on the pipeline of connection air input assembly 200 and mixer 400, be also provided with the first cut-off valve 240, on the pipeline of connection alkane input assembly 300 and mixer 400, be also provided with the second cut-off valve 340.The first cut-off valve 240 is all connected with control gear 600 electrical signal with the second cut-off valve 340.When system breaks down, can control the first cut-off valve 240 and the second cut-off valve 340 emergency cut-offs by control gear 600.
Further, be also provided with oxygen content meter 410 on the output pipeline of mixer 400, oxygen content meter is connected with control gear 600 electrical signal.Oxygen content value in the mixed gas of oxygen content meter 410 in can detection mixer 400 output pipelines is also sent to control gear 600 by oxygen content value signal, if will send acoustooptic alarm while exceeding setting value certain proportion (such as 20%), and control the unlatching of the first cut-off valve 240 and the second cut-off valve 340.
Further, on the output pipeline of mixer, be also provided with a safety valve 420.Mixture pressure in pipeline raises while surpassing a specified value, and safety valve 420 can be opened automatically, by discharge this mixed gas outside system, prevents that pipeline internal air pressure from surpassing specified value, and protection equipment normally moves and ensured personal safety.
Further, on the pipeline of connection air input assembly 200 and mixer 400, be also provided with the first safety check 250, on the pipeline of connection alkane input assembly 300 and mixer 400, be also provided with the second safety check 350.The effect of the first safety check 250 and the second safety check 350 is to guarantee ducted medium directional flow and can not flow backwards, the normal operation of support equipment safety.
Working principle is as follows:
During work, rock gas is successively after the first pressure regulator valve 120, first flow meter 110, mixer 400, and the mixed gas in mixer 400 enters calorific value detection device 500.If the mixed gas calorific value detecting is lower than the calorific value of setting, the gas discharge that the first flow meter 110 of the mixed gas calorific value that control gear 600 detects according to calorific value detection device 500 and rock gas input assembly 100 place pipelines detects, calculate the alkane volume that needs interpolation, the 3rd pressure regulator valve 330 of controlling alkane input assembly 300 place pipelines makes the paraffin gas needing enter mixer 400.Rock gas after mixing detects again, continues to adjust or be stabilized in a certain flow.If the mixed gas calorific value detecting is higher than the calorific value of setting, the gas discharge that the first flow meter 110 of the mixed gas calorific value that control gear 600 detects according to calorific value detection device 500 and rock gas input assembly 100 place pipelines detects, calculate the volume of air that needs interpolation, the first modulating valve 220 of controlling air input assembly 200 place pipelines makes the air needing enter mixer 400.Rock gas after mixing detects again, continues to adjust or be stabilized in a certain flow.
The stable system 10 of above-mentioned heating value of natural gas comprises rock gas input assembly 100, air input assembly 200, alkane input assembly 300, mixer 400, calorific value detection device 500 and control gear 600.Rock gas input assembly 100, air input assembly 200, alkane input assembly 300 are all communicated with mixer 400 by pipeline, and calorific value detection device 500 is arranged on the output pipeline of mixer 400, and are connected with control gear 600 electrical signal.Rock gas input assembly 100, air input assembly 200 and alkane input assembly 300 are equipped with flow and take into account modulating valve, and control gear 600 connects respectively each flowmeter and each modulating valve.The gas discharge that the first flow meter 110 of the mixed gas calorific value that control gear 600 detects according to calorific value detection device 500 and rock gas input assembly 100 place pipelines detects, calculate the alkane volume or the volume of air that need interpolation, the modulating valve of controlling alkane input assembly 300 or air input assembly 200 place pipelines makes the paraffin gas or the volume of air that need enter mixer 400, rock gas after mixing detects again, continues to adjust or be stabilized in a certain flow.By above-mentioned steps, the calorific value of mixed gas is stabilized in to a particular value, the normal operation of effective guarantee Thermal Equipment.
Above embodiment has only expressed several mode of execution of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (9)
1. a stable system for heating value of natural gas, is characterized in that, comprises rock gas input assembly, air input assembly, alkane input assembly, mixer, calorific value detection device and control gear;
Described rock gas input assembly, air input assembly, alkane input assembly is all connected with described mixer by pipeline, the pipeline that connects described rock gas input assembly and described mixer is provided with first flow meter, the pipeline that connects described air input assembly and described mixer is provided with the second flowmeter and the first modulating valve, the pipeline that connects described alkane input assembly and described mixer is provided with the 3rd flowmeter and the second modulating valve, described calorific value detection device is arranged on the output pipeline of described mixer, described calorific value detection device can detect the calorific value of the mixed gas in the output pipeline of described mixer, described control gear respectively with described calorific value detection device, first flow, the second flowmeter, the 3rd flowmeter, the first modulating valve and the second modulating valve meter electrical signal connect, and the calorific value that described control gear can detect according to described calorific value detection device and the flow value of described first flow meter are to control at least one unlatching in described the first modulating valve and the second modulating valve.
2. the stable system of heating value of natural gas according to claim 1, it is characterized in that, connect on the pipeline of described air input assembly and described mixer and be also provided with the first cut-off valve, connect on the pipeline of described alkane input assembly and described mixer and be also provided with the second cut-off valve, described the first cut-off valve is all connected with described control gear electrical signal with the second cut-off valve.
3. the stable system of heating value of natural gas according to claim 2, it is characterized in that, the output pipeline of described mixer is provided with oxygen content meter, described oxygen content meter is connected with described control gear electrical signal, described oxygen content meter can detect the oxygen content value of the gas in the output pipeline of described mixer, and controls at least one unlatching in described the first cut-off valve and the second cut-off valve.
4. the stable system of heating value of natural gas according to claim 3, is characterized in that, is also provided with a safety valve on the output pipeline of described mixer.
5. the stable system of heating value of natural gas according to claim 1, it is characterized in that, connect on the pipeline of described rock gas input assembly and described mixer and be also provided with the first pressure regulator valve, connect on the pipeline of described air input assembly and described mixer and be also provided with the second pressure regulator valve, connect on the pipeline of described alkane input assembly and described mixer and be also provided with the 3rd pressure regulator valve, described the first pressure regulator valve, the second pressure regulator valve and the 3rd pressure regulator valve are all connected with described control gear electrical signal.
6. the stable system of heating value of natural gas according to claim 1, it is characterized in that, connect on the pipeline of described air input assembly and described mixer and be also provided with the first safety check, connect on the pipeline of described alkane input assembly and described mixer and be also provided with the second safety check.
7. the stable system of heating value of natural gas according to claim 1, is characterized in that, described first flow meter, the second flowmeter and the 3rd flowmeter are turbine flowmeter.
8. the stable system of heating value of natural gas according to claim 1, is characterized in that, described control gear is programmable logic control device.
9. the stable system of heating value of natural gas according to claim 1, is characterized in that, described mixer is static mixer.
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| CN201420360367.XU CN203963504U (en) | 2014-06-30 | 2014-06-30 | The stable system of heating value of natural gas |
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| CN201420360367.XU CN203963504U (en) | 2014-06-30 | 2014-06-30 | The stable system of heating value of natural gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351748A (en) * | 2015-11-09 | 2016-02-24 | 上海华之邦科技股份有限公司 | Device for making low-heating-value gas through natural gas and liquid nitrogen |
| CN105387345A (en) * | 2015-12-10 | 2016-03-09 | 济南华信自动化工程有限公司 | Automatic changing cabinet for quantitative-type gas |
| CN106338005A (en) * | 2016-08-18 | 2017-01-18 | 北京易安华美科学技术有限公司 | Respiration air feed system |
| CN108568222A (en) * | 2017-03-10 | 2018-09-25 | 广东珠江燃气集团有限公司 | A kind of air mixture automatic preparing device |
-
2014
- 2014-06-30 CN CN201420360367.XU patent/CN203963504U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351748A (en) * | 2015-11-09 | 2016-02-24 | 上海华之邦科技股份有限公司 | Device for making low-heating-value gas through natural gas and liquid nitrogen |
| CN105387345A (en) * | 2015-12-10 | 2016-03-09 | 济南华信自动化工程有限公司 | Automatic changing cabinet for quantitative-type gas |
| CN106338005A (en) * | 2016-08-18 | 2017-01-18 | 北京易安华美科学技术有限公司 | Respiration air feed system |
| CN108568222A (en) * | 2017-03-10 | 2018-09-25 | 广东珠江燃气集团有限公司 | A kind of air mixture automatic preparing device |
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