CN109269845A - A kind of internal floating roof tank mixed gas on-line sampling monitoring system and monitoring method - Google Patents
A kind of internal floating roof tank mixed gas on-line sampling monitoring system and monitoring method Download PDFInfo
- Publication number
- CN109269845A CN109269845A CN201811284923.9A CN201811284923A CN109269845A CN 109269845 A CN109269845 A CN 109269845A CN 201811284923 A CN201811284923 A CN 201811284923A CN 109269845 A CN109269845 A CN 109269845A
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- CN
- China
- Prior art keywords
- gas
- tank
- pipe
- branch pipe
- aspiration pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005070 sampling Methods 0.000 title claims abstract description 35
- 238000012544 monitoring process Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 89
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 26
- 238000003860 storage Methods 0.000 claims abstract description 20
- 239000000284 extract Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 239000002737 fuel gas Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
Abstract
The invention discloses a kind of internal floating roof tank mixed gas on-line sampling monitoring system and monitoring method, which includes sampling tree pipe group, aspiration pump, gas detection analytical equipment and control unit；Storage tank includes the top end socket of tank body and ellipse；Sampling tree pipe group includes main pipe and several branch pipes, and main pipe one end is stretched out outside storage tank, and the other end vertically extends several groups branch pipe to both sides, and the branch pipe is spaced set；Main pipe lower end is equipped with solenoid valve, and the both ends of branch pipe are pumped equipped with minitype pneumatic；One end that main pipe stretches out outside storage tank is connected to the air inlet of aspiration pump, and the gas outlet of aspiration pump is connected with gas detection analytical equipment；Sampling monitoring system of the invention, the degree of automation is higher, and the branch pipe of different height can collect the gaseous sample of different height, provides accurately sample data to the Concentration Testing of fuel gas；Nitrogen supplying tank is set and greatly improves the safety of equipment operation using nitrogen as the imflammable gas of medium displacement ullage.
Description
Technical field
The present invention relates to technical field of petrochemical industry, adopt online more particularly to a kind of internal floating roof tank mixed gas
Sample monitors system and monitoring method.
Background technique
Petroleum-type oil product typically contains imflammable gas and toxic gas, so in the gas compartment of storage tank ullage
It generally can the evaporating loss imflammable gas containing oil product；Inner floating roof effectively completely cuts off storing in tank and air, from certain journey
The danger classes that fire explosion occurs is also reduced on degree, therefore largely uses internal floating roof tank saving gasoline in Petrochemical Enterprises at present
And other effumability oil products, but internal floating roof tank is in use for some time, can cause gas due to the aging of floating roof element
A large amount of evolutions, great casualties and property loss are caused, while also creating the environmental pollution of large area, so in stone
In oily chemical production process, must the gas phase composition of raw material deposited to storage tank in time be sampled chemical examination, reduce the dangerous system of storage tank
Number.
Summary of the invention
The purpose of the present invention is to solve the above the deficiencies in the prior art, propose that a kind of internal floating roof tank mixed gas exists
Line sampling monitoring system, the storage tank include the top end socket of tank body and ellipse, and floating in tank body has an inner floating roof；It is described
Sampling monitoring system include sampling tree pipe group, aspiration pump, gas detection analytical equipment and control unit；
The sampling tree pipe group is arranged in the end socket of top, and the sampling tree pipe group includes main pipe and several
Pipe, main pipe one end are stretched out outside storage tank, and the other end vertically extends several groups branch pipe to both sides, and the branch pipe is equidistantly to set
It sets；Main pipe lower end is equipped with solenoid valve, and the both ends of branch pipe are pumped equipped with minitype pneumatic；
One end that the main pipe stretches out outside storage tank is connected to the air inlet of aspiration pump, and the gas outlet of aspiration pump and gas are examined
Analytical equipment is surveyed to be connected；
The sampling monitoring system further includes nitrogen supplying tank, and the nitrogen supplying tank passes through nitrogen feeding pipe simultaneously
Enter main pipe, the nitrogen feeding pipe is equipped with pneumatic operated valve.
Preferably, the solenoid valve, pneumatic operated valve, minitype pneumatic pump, aspiration pump and gas detection analytical equipment pass through control
Line processed is connected with control unit.
Preferably, infrared-gas concentration analyzer is equipped in the gas detection analytical equipment.
Preferably, the aspiration pump is diaphragm pump.
Preferably, the radar level gauge being connected with control unit is additionally provided in the storage tank；When the transporting oil into storage tank
When, the liquid level of radar level gauge meeting real-time monitoring oil product makes liquid level in tank body be not higher than sampling tree pipe group bottom.
The present invention also provides a kind of monitoring methods using above-mentioned on-line sampling monitoring system, include the following steps:
(a) oil gas samples: control aspiration pump and lowest level minitype pneumatic pump open simultaneously, and oil gas in tank is pumped to gas
Test and analyze device；
(b) aspiration pump and lowest level minitype pneumatic pump, the infrared-gas concentration analysis in gas detection analytical equipment are closed
Instrument is responsible for realizing the detection and analysis of oil gas at lowest level branch pipe in tank；
(c) when the concentration for detecting imflammable gas is less than the concentration of setting, stop monitoring；When detecting combustibility
When the concentration of gas is more than the concentration of setting, control unit issues instruction, controls the miniature of the upper layer branch pipe of current detection branch pipe
Air driven pump and the aspiration pump open simultaneously, by tank at this layer of branch pipe oil gas pump give gas detection analytical equipment close pumping
Pump and this layer of minitype pneumatic pump, and the infrared-gas concentration analyzer in gas detection analytical equipment is responsible for realizing this layer of branch pipe in tank
Locate the detection and analysis of oil gas；
(d) it operates according to step (c), the concentration of the imflammable gas at layer branch pipe each in tank is monitored upwards in turn,
At top layer's branch pipe the concentration of imflammable gas be more than setting concentration when, control unit issue instruction, open solenoid valve and
Aspiration pump extracts the intracorporal imflammable gas of tank out；
(e) control unit control nitrogen supplying tank injects nitrogen into tank body by nitrogen feeding pipe.
Beneficial effects of the present invention are as follows:
(1) sampling monitoring system of the invention, the degree of automation is higher, and the branch pipe of different height can collect different height
The gaseous sample of degree, to the Concentration Testing offer of fuel gas, accurately sample data, control system are controlled according to detection data
Aspiration pump extracts imflammable gas out.
(2) setting nitrogen supplying tank significantly reduces oil using nitrogen as the imflammable gas of medium displacement ullage
The rate of volatilization of product greatly improves the safety of equipment operation.
Detailed description of the invention
Fig. 1 is a kind of internal floating roof tank mixed gas on-line sampling monitoring system structure diagram in the present invention；
In figure, end socket, 12- tank body, 13- inner floating roof, 2- sampling tree pipe group, 21- main pipe, 22- at the top of 1- storage tank, 11-
Branch pipe, 23- solenoid valve, 24- minitype pneumatic pump, 3- aspiration pump, 4- gas detection analytical equipment, 5- control unit, 6- nitrogen supply
To tank, 61- pneumatic operated valve, 7- radar level gauge.
Specific embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment and attached drawing, the invention will be further described, should
The examples are only for explaining the invention, is not intended to limit the scope of the present invention..
Refering to fig. 1, the invention proposes a kind of internal floating roof tank mixed gas on-line samplings to monitor system, the storage tank
1 includes the top end socket 11 of tank body 12 and ellipse, and floating in tank body 1 has an inner floating roof 13；The sampling monitoring system packet
Include sampling tree pipe group 2, aspiration pump 3, gas detection analytical equipment 4 and control unit 5；
The sampling tree pipe group 2 is arranged in top end socket 11, if the sampling tree pipe group 2 include main pipe 21 with
Heavenly Stems and Earthly Branches pipe 22,21 one end of main pipe are stretched out outside storage tank 1, and the other end vertically extends several groups branch pipe 22, the branch to both sides
Pipe 22 is spaced set；21 lower end of main pipe is equipped with solenoid valve 23, and the both ends of branch pipe are equipped with minitype pneumatic pump 24；
One end that the main pipe 21 stretches out outside storage tank is connected to the air inlet of aspiration pump 3, the gas outlet of aspiration pump 3 and gas
Physical examination surveys analytical equipment 4 and is connected；
The sampling monitoring system further includes nitrogen supplying tank 6, and the nitrogen supplying tank 6 passes through nitrogen feeding pipe
It is incorporated to main pipe 21, the nitrogen feeding pipe is equipped with pneumatic operated valve 61.
In the above-mentioned technical solutions, the solenoid valve 23, pneumatic operated valve 61, minitype pneumatic pump 24, the gentle physical examination of aspiration pump 3
Analytical equipment 4 is surveyed to be connected by control line with control unit 5.
In the above-mentioned technical solutions, infrared-gas concentration analyzer is equipped in the gas detection analytical equipment 4.
In the above-mentioned technical solutions, the aspiration pump 3 is diaphragm pump.
In the above-mentioned technical solutions, the radar level gauge 7 being connected with control unit 5 is additionally provided in the storage tank 1；
The present invention also provides a kind of monitoring methods using above-mentioned on-line sampling monitoring system, include the following steps:
(a) oil gas samples: control aspiration pump and lowest level minitype pneumatic pump open simultaneously, and oil gas in tank is pumped to gas
Test and analyze device；
(b) aspiration pump and lowest level minitype pneumatic pump, the infrared-gas concentration analysis in gas detection analytical equipment are closed
Instrument is responsible for realizing the detection and analysis of oil gas at lowest level branch pipe in tank；
(c) when the concentration for detecting imflammable gas is less than the concentration of setting, stop monitoring；When detecting combustibility
When the concentration of gas is more than the concentration of setting, control unit issues instruction, controls the miniature of the upper layer branch pipe of current detection branch pipe
Air driven pump and the aspiration pump open simultaneously, by tank at this layer of branch pipe oil gas pump give gas detection analytical equipment close pumping
Pump and this layer of minitype pneumatic pump, and the infrared-gas concentration analyzer in gas detection analytical equipment is responsible for realizing this layer of branch pipe in tank
Locate the detection and analysis of oil gas；
(d) it operates according to step (c), the concentration of the imflammable gas at layer branch pipe each in tank is monitored upwards in turn,
At top layer's branch pipe the concentration of imflammable gas be more than setting concentration when, control unit issue instruction, open solenoid valve and
Aspiration pump extracts the intracorporal imflammable gas of tank out；
(e) control unit control nitrogen supplying tank injects nitrogen into tank body by nitrogen feeding pipe.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of internal floating roof tank mixed gas on-line sampling monitors system, the storage tank includes the top of tank body and ellipse
End socket, floating in tank body has an inner floating roof；It is characterized in that, the sampling monitoring system include sampling tree pipe group, aspiration pump,
Gas detection analytical equipment and control unit；
The sampling tree pipe group is arranged in the end socket of top, and the sampling tree pipe group includes main pipe and several branch pipes, master
Main pipe one end is stretched out outside storage tank, and the other end vertically extends several groups branch pipe to both sides, and the branch pipe is spaced set；It is main
Main pipe lower end is equipped with solenoid valve, and the both ends of branch pipe are pumped equipped with minitype pneumatic；
One end that the main pipe stretches out outside storage tank is connected to the air inlet of aspiration pump, the gas outlet of aspiration pump and gas detection point
Analysis apparatus is connected；
The sampling monitoring system further includes nitrogen supplying tank, and the nitrogen supplying tank passes through nitrogen feeding pipe and becomes owner of
Main pipe is connected, and the nitrogen feeding pipe is equipped with pneumatic operated valve.
2. a kind of internal floating roof tank mixed gas on-line sampling according to claim 1 monitors system, which is characterized in that institute
Solenoid valve, pneumatic operated valve, minitype pneumatic pump, aspiration pump and the gas detection analytical equipment stated pass through control line and control unit phase
Even.
3. a kind of internal floating roof tank mixed gas on-line sampling according to claim 1 monitors system, which is characterized in that institute
Infrared-gas concentration analyzer is equipped in the gas detection analytical equipment stated.
4. a kind of internal floating roof tank mixed gas on-line sampling according to claim 1 monitors system, which is characterized in that institute
The aspiration pump stated is diaphragm pump.
5. a kind of internal floating roof tank mixed gas on-line sampling according to claim 1 monitors system, which is characterized in that institute
State the radar level gauge for being additionally provided in storage tank and being connected with control unit.
6. a kind of using a kind of monitoring side of internal floating roof tank mixed gas on-line sampling monitoring system described in claim 1
Method, which comprises the steps of:
(a) oil gas samples: control aspiration pump and lowest level minitype pneumatic pump open simultaneously, and oil gas in tank is pumped to gas detection
Analytical equipment；
(b) aspiration pump and lowest level minitype pneumatic pump are closed, the infrared-gas concentration analyzer in gas detection analytical equipment is negative
Duty realizes the detection and analysis of oil gas at lowest level branch pipe in tank；
(c) when the concentration for detecting imflammable gas is less than the concentration of setting, stop monitoring；When detecting imflammable gas
Concentration be more than setting concentration when, control unit issue instruction, control current detection branch pipe upper layer branch pipe minitype pneumatic
Pump and the aspiration pump open simultaneously, by tank at this layer of branch pipe oil gas pump to gas detection analytical equipment close aspiration pump and
This layer of minitype pneumatic pumps, and the infrared-gas concentration analyzer in gas detection analytical equipment is responsible for realizing in tank oil at this layer of branch pipe
The detection and analysis of gas；
(d) it operates, the concentration of the imflammable gas at layer branch pipe each in tank is monitored upwards in turn, when most according to step (c)
When the concentration of imflammable gas is more than the concentration of setting at the branch pipe of upper layer, control unit issues instruction, opens solenoid valve and pumping
Pump extracts the intracorporal imflammable gas of tank out；
(e) control unit control nitrogen supplying tank injects nitrogen into tank body by nitrogen feeding pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811284923.9A CN109269845A (en) | 2018-10-31 | 2018-10-31 | A kind of internal floating roof tank mixed gas on-line sampling monitoring system and monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811284923.9A CN109269845A (en) | 2018-10-31 | 2018-10-31 | A kind of internal floating roof tank mixed gas on-line sampling monitoring system and monitoring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109269845A true CN109269845A (en) | 2019-01-25 |
Family
ID=65191772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811284923.9A Withdrawn CN109269845A (en) | 2018-10-31 | 2018-10-31 | A kind of internal floating roof tank mixed gas on-line sampling monitoring system and monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109269845A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110525819A (en) * | 2019-09-09 | 2019-12-03 | 中国石油集团安全环保技术研究院有限公司 | A kind of large oil tank safety and environmental protection integrative protection system and means of defence |
| CN112945891A (en) * | 2021-02-05 | 2021-06-11 | 宁波普洛赛斯检测科技有限公司 | Air carbon monoxide measuring method and measuring instrument thereof |
| CN113060433A (en) * | 2021-04-02 | 2021-07-02 | 南京工业大学 | Gas collection and detection device and method for gas phase space in internal floating roof oil tank |
-
2018
- 2018-10-31 CN CN201811284923.9A patent/CN109269845A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110525819A (en) * | 2019-09-09 | 2019-12-03 | 中国石油集团安全环保技术研究院有限公司 | A kind of large oil tank safety and environmental protection integrative protection system and means of defence |
| CN112945891A (en) * | 2021-02-05 | 2021-06-11 | 宁波普洛赛斯检测科技有限公司 | Air carbon monoxide measuring method and measuring instrument thereof |
| CN112945891B (en) * | 2021-02-05 | 2024-05-03 | 宁波普洛赛斯检测科技有限公司 | Air carbon monoxide measuring method and measuring instrument thereof |
| CN113060433A (en) * | 2021-04-02 | 2021-07-02 | 南京工业大学 | Gas collection and detection device and method for gas phase space in internal floating roof oil tank |
| CN113060433B (en) * | 2021-04-02 | 2021-12-03 | 南京工业大学 | Gas collection and detection device and method for gas phase space in internal floating roof oil tank |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20190125 |