CN111319884A - Method and device for preventing oil gas of crude oil storage tank from burning and exploding - Google Patents
Method and device for preventing oil gas of crude oil storage tank from burning and exploding Download PDFInfo
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- CN111319884A CN111319884A CN202010122062.5A CN202010122062A CN111319884A CN 111319884 A CN111319884 A CN 111319884A CN 202010122062 A CN202010122062 A CN 202010122062A CN 111319884 A CN111319884 A CN 111319884A
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- 239000010779 crude oil Substances 0.000 title claims abstract description 78
- 239000003921 oil Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 172
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 149
- 239000001301 oxygen Substances 0.000 claims abstract description 149
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 149
- 238000007667 floating Methods 0.000 claims abstract description 86
- 239000012895 dilution Substances 0.000 claims abstract description 41
- 238000010790 dilution Methods 0.000 claims abstract description 41
- 238000005259 measurement Methods 0.000 claims abstract description 38
- 238000004880 explosion Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 238000007865 diluting Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 238000006555 catalytic reaction Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 230000003595 spectral effect Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000002485 combustion reaction Methods 0.000 description 11
- 239000003085 diluting agent Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the technical field of explosion-proof detection, and provides a method and a device for preventing oil gas explosion of a crude oil storage tank, wherein the method comprises the following steps: fixing an oxygen concentration measuring module on the surface of a floating plate of a crude oil storage tank, and enabling the oxygen concentration measuring module to be located in a floating plate sealing space formed by the floating plate, the crude oil surface and the inner wall of the crude oil storage tank; the oxygen concentration measurement module measures the volume fraction of oxygen in the oil-gas mixed gas in the sealed space of the floating disc and sends the measured volume fraction of oxygen to the control module; the control module compares the received oxygen volume fraction with an oxygen volume fraction threshold value, and when the oxygen volume fraction is larger than or equal to the oxygen volume fraction threshold value, the gas dilution module communicated with the floating disc sealing space is controlled to charge dilution gas into the oil-gas mixed gas in the floating disc sealing space for dilution. The invention can quickly and accurately prevent the combustible gas volatilized by the crude oil in the sealed space of the floating plate in the crude oil storage tank from burning and exploding.
Description
Technical Field
The invention relates to the technical field of explosion-proof detection, in particular to a method and a device for preventing oil gas of a crude oil storage tank from explosion.
Background
Crude oil is used as a flammable and explosive dangerous material, and a large-scale storage mode inevitably brings huge challenges to safe production. Storage tank fire accident has many in the world, prevents that crude oil storage tank oil gas from burning and exploding has great meaning.
At present, the anti-combustion and explosion technology of a crude oil storage tank is mostly realized by utilizing specific gas detection in the tank or oil gas sampling detection in the tank. The detection of the specific gas in the tank is to detect the concentration of the specific gas in the combustible gas volatilized from the crude oil, and to control the concentration of the combustible gas in the floating plate sealed space by filling gas into the floating plate sealed space to dilute the gas in combination with external equipment; the in-tank oil gas sampling detection is to sample gas in the floating plate sealed space, bring the sample back to a laboratory for detection, measure the proportion of combustible gas and oxygen in the mixed gas, control external equipment according to the measured value to fill gas into the floating plate sealed space for dilution, control the concentration of combustible gas in the floating plate sealed space, and achieve the purpose of preventing oil gas explosion in the floating plate sealed space in the crude oil storage tank.
The method has the advantages that the method can only measure the concentration of specific combustible gas in oil gas, and in the practical application process, the combustible gas in the oil gas is complex, the components and proportion of each combustible gas are random, the single gas cannot reflect the practical situation, the measurement error is large, and the requirement of anti-explosion cannot be accurately met; the mode that utilizes oil gas sampling test to realize that the oil storage tank explosion-proof has the problem of inefficiency, and operating personnel need take a sample to gas in the floating plate confined space, and the sample back gas sample need be brought back the laboratory and detect, and detection time is longer, and the real-time is poor, can not in time control the oil gas concentration in the floating plate confined space in the practical application process, and the safety risk is great, and the cost of labor is higher.
Disclosure of Invention
The invention mainly solves the technical problems of large error, low efficiency and high labor and equipment cost in the detection and sampling process by utilizing specific gas in the explosion-proof process of a crude oil storage tank in the prior art, and provides a method for preventing the explosion of crude oil storage tank oil gas.
The invention provides a method for preventing oil gas of a crude oil storage tank from burning and exploding, which comprises the following steps:
fixing an oxygen concentration measuring module on the surface of a floating plate of a crude oil storage tank, and enabling the oxygen concentration measuring module to be located in a floating plate sealing space formed by the floating plate, the crude oil surface and the inner wall of the crude oil storage tank;
the oxygen concentration measurement module measures the volume fraction of oxygen in the oil-gas mixed gas in the sealed space of the floating disc and sends the measured volume fraction of oxygen to the control module;
the control module compares the received oxygen volume fraction with an oxygen volume fraction threshold value, and when the oxygen volume fraction is larger than or equal to the oxygen volume fraction threshold value, the gas dilution module communicated with the floating disc sealed space is controlled to charge dilution gas into the oil-gas mixed gas in the floating disc sealed space for dilution, so that the oxygen volume fraction is reduced to be lower than the oxygen volume fraction threshold value.
Preferably, the control module is externally connected with a control module, and the control module is used for displaying the oxygen volume fraction and setting the oxygen volume fraction threshold.
Preferably, the number of the oxygen concentration measurement modules is single or a plurality of the oxygen concentration measurement modules are uniformly distributed.
Preferably, the oxygen concentration measuring module measures the oxygen concentration by a spectral absorption or chemical catalysis method.
Correspondingly, the invention also provides a device for preventing oil gas of the crude oil storage tank from burning and exploding, which comprises: the device comprises an oxygen concentration measuring module (1), a control module (3), a gas diluting module (4) and a floating disc (9);
the oxygen concentration measuring module (1) is fixed on the surface of a floating plate (9) of the crude oil storage tank (7), and the oxygen concentration measuring module (1) is positioned in a floating plate sealing space (6) formed by the floating plate (9), a crude oil liquid surface (8) and the inner wall of the crude oil storage tank (7);
the oxygen concentration measuring module (1) is in signal connection with the control module (3), and the control module (3) is in signal connection with the gas diluting module (4);
the gas dilution module (4) is communicated with the floating disc sealed space (6) through a pipeline (5).
Preferably, the control module (3) is also electrically connected with the control module (2).
Preferably, the gas dilution module (4) comprises a gas injection device storing dilution gas and capable of adjusting the flow rate.
Preferably, the number of the oxygen concentration measurement modules (1) is single or a plurality of the oxygen concentration measurement modules are distributed uniformly.
Preferably, the surface of the oxygen concentration measuring module (1) is provided with an air inlet hole and an air outlet hole, and the air inlet hole and the air outlet hole are used for ensuring that the gas to be measured in the oxygen concentration measuring module (1) is communicated with the external gas.
Preferably, an oleophobic membrane is plated inside the oxygen concentration measurement module (1);
or a protection device formed by a waterproof, oil-proof and breathable functional material is arranged in the oxygen concentration measurement module (1).
The invention provides a method and a device for preventing oil gas of a crude oil storage tank from being exploded, which utilize a method for controlling the oxygen concentration in a combustion condition, and specifically comprise the following steps: by measuring the volume fraction of oxygen in the oil-gas mixed gas in the floating disc sealed space of the crude oil storage tank, when the volume fraction of the oxygen reaches the oxygen volume fraction threshold value, the control module fills diluent gas into the oil-gas mixed gas in the floating disc sealed space for dilution, so that the volume fraction of the oxygen in the oil-gas mixed gas is reduced, and the situation that the oxygen volume fraction reaches the minimum value of the combustion condition of the oil gas and the combustion explosion occurs in the floating disc sealed space when the oil gas is ignited under the external condition is prevented. The method prevents the oil gas of the crude oil storage tank from being exploded by controlling the oxygen concentration in the combustion generating condition, has the advantages of high response speed, no need of measuring the concentration of single-component combustible gas in the oil gas, convenient operation, low operation cost and the like, can quickly and accurately prevent the combustible gas volatilized by the crude oil in the floating disc sealing space in the crude oil storage tank from being exploded, and has application value in the field of crude oil storage.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for preventing oil and gas explosion of a crude oil storage tank according to an embodiment of the present invention.
Reference numerals: 1. an oxygen concentration measurement module; 2. a control module; 3. a control module; 4. a gas dilution module; 5. a pipeline; 6. the floating disc seals the space; 7. a crude oil storage tank; 8. crude oil level; 9. a floating plate.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.
Example one
The method for preventing the oil gas of the crude oil storage tank from being exploded in the first embodiment of the invention can be realized by the device for preventing the oil gas of the crude oil storage tank from being exploded in the second embodiment of the invention. Referring to fig. 1, the method for preventing oil and gas explosion of a crude oil storage tank provided by the embodiment includes the following processes:
the oxygen concentration measuring module 1 is fixed on the surface of a floating plate 9 of a crude oil storage tank 7, so that the oxygen concentration measuring module 1 is positioned in a floating plate sealing space 6 formed by the floating plate 9, a crude oil liquid surface 8 and the inner side wall of the crude oil storage tank 7. In this embodiment, the floating plate 9 is concave, and the outer edge of the floating plate 9 is tilted and is in sealing contact with the inner side wall of the crude oil storage tank 7. The oxygen concentration measuring module 1 is fixed on the lower surface of the tilting part of the floating plate 9. When the crude oil liquid level 8 changes in the crude oil storage tank 7, the oxygen concentration measurement module 1 can move up and down along with the floating plate 9 in the tank, and the oxygen concentration measurement module 1 is always kept in the floating plate sealed space 6 formed by the inner side wall of the crude oil storage tank 7, the floating plate 9 and the crude oil liquid level 8.
The oxygen concentration measuring module 1 measures the volume fraction of oxygen in the oil-gas mixture in the floating disc sealed space 6 and sends the measured volume fraction of oxygen to the control module 3.
The control module 3 compares the received oxygen volume fraction with an oxygen volume fraction threshold, and when the oxygen volume fraction is greater than or equal to the oxygen volume fraction threshold, the gas dilution module 4 communicated with the floating disc sealed space 6 is controlled to charge dilution gas into the oil-gas mixed gas in the floating disc sealed space 6 for dilution, so that the oxygen volume fraction is reduced to be lower than the oxygen volume fraction threshold, and the oil gas in the floating disc sealed space 6 of the crude oil storage tank is prevented from being exploded. Wherein, the oxygen volume fraction threshold is set according to the crude oil component proportion in the crude oil storage tank and the industrial operation specification (a safety value below the lowest oxygen volume fraction when oil gas is exploded). The gas dilution module 4 comprises a gas injection device which stores dilution gas and can adjust the flow rate, and a gas outlet of the gas injection device can control the transmission flow rate of the dilution gas to the floating disc sealed space 6 through a pipeline 5. The gas injection equipment can store diluent gas, control the gas flow rate and fill the diluent gas into the floating disc sealed space 6 through the pipeline 5, and the diluent gas is selected from gases with the characteristic of no combustion supporting, such as nitrogen, carbon dioxide and the like.
In this embodiment, the oxygen concentration measurement module 1 may be single or uniformly distributed in the crude oil storage tank 7, and can measure the volume fraction of oxygen in oil and gas in the floating plate sealed space 6 at a single point or multiple points accurately in time. The oxygen concentration measuring module 1 measures the oxygen concentration by methods such as spectral absorption or chemical catalysis; the oxygen concentration measuring module 1 and the control module 3 are in signal connection through an electroless connection form (for example, signal connection is performed through an optical fiber or the like). The oxygen concentration measuring module 1 of the present embodiment combines the electroless connection technology to transmit the acquired information to the control module 3; the oxygen concentration measuring module 1 does not need to be powered, so that the oxygen concentration measuring module 1 is prevented from igniting oil gas in the floating plate sealed space 6 to cause combustion and explosion in the working and signal transmission processes.
The control module 3 and the gas dilution module 4 are in signal connection in a wireless connection or wired connection mode to control the gas dilution module 4. The oxygen concentration measuring module 1 can measure the concentration of one or more (methane, propane and the like) gases which are easy to explode in the floating disc sealed space 6.
In addition, the control module 3 is externally connected with the control module 2, and the oxygen volume fraction can be displayed and the oxygen volume fraction threshold can be set through the control module 2. The surface of the oxygen concentration measurement module 1 is provided with an air inlet hole and an air outlet hole which are used for ensuring that the gas to be measured in the oxygen concentration measurement module 1 is communicated with the external gas. An oleophobic membrane is plated inside the oxygen concentration measurement module 1; or, the protection device formed by the waterproof and oilproof breathable functional material is arranged inside the oxygen concentration measurement module 1, so that the oxygen concentration measurement module 1 can stably measure the oxygen concentration in oil gas for a long time.
According to the method for preventing the oil gas of the crude oil storage tank from being exploded, the volume fraction of oxygen in the oil gas mixed gas in the floating disc sealing space of the crude oil storage tank is measured, when the volume fraction of the oxygen reaches the oxygen volume fraction threshold value, the control module controls the gas dilution module to charge diluent gas into the oil gas mixed gas in the floating disc sealing space for dilution, the volume fraction of the oxygen in the oil gas mixed gas is reduced, and the oil gas in the floating disc sealing space is prevented from being exploded by using a method for controlling the oxygen concentration in the combustion condition.
Example two
FIG. 1 is a schematic structural diagram of an apparatus for preventing oil and gas explosion of a crude oil storage tank according to an embodiment of the present invention. As shown in fig. 1, the device for preventing oil and gas explosion of a crude oil storage tank provided by this embodiment includes: the device comprises an oxygen concentration measuring module 1, a control module 3, a gas diluting module 4 and a floating disc 9.
The oxygen concentration measurement module 1 is fixed on the surface of a floating plate 9 of the crude oil storage tank 7, and the oxygen concentration measurement module 1 is positioned in a floating plate sealing space 6 formed by the floating plate 9, a crude oil liquid level 8 and the inner side wall of the crude oil storage tank 7. In this embodiment, the floating plate 9 is concave, and the outer edge of the floating plate 9 is tilted and is in sealing contact with the inner side wall of the crude oil storage tank 7. The oxygen concentration measuring module 1 is fixed on the lower surface of the tilting part of the floating plate 9. When the crude oil liquid level 8 changes in the crude oil storage tank 7, the oxygen concentration measurement module 1 can move up and down along with the floating plate 9 in the tank, and the oxygen concentration measurement module 1 is always kept in the floating plate sealed space 6 formed by the inner side wall of the crude oil storage tank 7, the floating plate 9 and the crude oil liquid level 8. The oxygen concentration measuring modules 1 are distributed in the oil storage tank singly or uniformly, and can measure the volume fraction of oxygen in oil gas in the floating disc sealed space 6 in a single-point or multi-point manner timely and accurately. In addition, the surface of the oxygen concentration measurement module 1 is provided with an air inlet and an air outlet, which are used for ensuring the intercommunication between the gas to be measured inside the oxygen concentration measurement module 1 and the external gas. An oleophobic membrane is plated inside the oxygen concentration measurement module 1; or, the protection device formed by the waterproof and oilproof breathable functional material is arranged inside the oxygen concentration measurement module 1, so that the oxygen concentration measurement module 1 can stably measure the oxygen concentration in oil gas for a long time.
The oxygen concentration measuring module 1 and the control module 3 are in signal connection through an electroless connection mode (for example, signal connection is performed through an optical fiber or the like). The oxygen concentration measuring module 1 of the present embodiment measures the oxygen concentration by methods such as spectral absorption or chemical catalysis; the oxygen concentration measuring module 1 combines the electroless connection technology to transmit the acquired information to the control module 3; the oxygen concentration measuring module 1 does not need to be powered, so that the oxygen concentration measuring module 1 is prevented from igniting oil gas in the floating plate sealed space 6 to cause combustion and explosion in the working and signal transmission processes. The control module 3 and the gas dilution module 4 are in signal connection in a wireless connection or wired connection mode. The control module 3 and the gas dilution module 4 are placed outside the crude oil storage tank 7. The gas dilution module 4 receives the command of the control module 3, and the gas dilution module 4 is communicated with the floating disc sealed space 6 through a pipeline 5.
The oxygen concentration measuring module 1 measures the volume fraction of oxygen in the oil-gas mixture in the floating disc sealed space 6 and sends the measured volume fraction of oxygen to the control module 3. The control module 3 compares the received oxygen volume fraction with an oxygen volume fraction threshold, and when the oxygen volume fraction is greater than or equal to the oxygen volume fraction threshold, the gas dilution module 4 communicated with the floating disc sealed space 6 is controlled to charge dilution gas into the oil-gas mixed gas in the floating disc sealed space 6 for dilution, so that the oxygen volume fraction is reduced to be lower than the oxygen volume fraction threshold, and the oil gas in the floating disc sealed space 6 of the crude oil storage tank is prevented from being exploded.
In the present embodiment, the gas dilution module 4 includes a gas injection device storing dilution gas and capable of adjusting the flow rate, and a gas outlet of the gas injection device is capable of controlling the flow rate of the dilution gas transmitted into the floating plate sealed space 6 through the pipe 5. The gas injection equipment can store diluent gas, control the gas flow rate and fill the diluent gas into the floating disc sealed space 6 through the pipeline 5, and the diluent gas is selected from gases with the characteristic of no combustion supporting, such as nitrogen, carbon dioxide and the like. The pipe 5 connects the gas dilution module 4 and the float plate enclosed space 6, and can introduce the dilution gas into the float plate enclosed space 6. In addition, the control module 3 is also electrically connected with the control module 2, and the control module 2 is used for displaying the oxygen volume fraction and setting the oxygen volume fraction threshold.
The device that prevents that crude oil storage tank oil gas from exploding fires that this embodiment provides, through oxygen concentration measurement module 1 oxygen volume fraction in the oil gas mist in the measurement floating plate confined space 6, compare oxygen volume fraction and oxygen volume fraction threshold value through control module 3, fill into diluent gas through gas dilution module 4 in to the oil gas mist in the floating plate confined space 6 and dilute, make oxygen volume fraction fall to below the oxygen volume fraction threshold value, reduce the volume fraction of oxygen in the oil gas mist. The invention prevents the oil gas from exploding in the sealed space of the floating plate by using the method of controlling the oxygen concentration in the combustion condition.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some or all technical features may be made without departing from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for preventing oil gas of a crude oil storage tank from being exploded is characterized by comprising the following steps:
fixing an oxygen concentration measuring module on the surface of a floating plate of a crude oil storage tank, and enabling the oxygen concentration measuring module to be located in a floating plate sealing space formed by the floating plate, the crude oil surface and the inner wall of the crude oil storage tank;
the oxygen concentration measurement module measures the volume fraction of oxygen in the oil-gas mixed gas in the sealed space of the floating disc and sends the measured volume fraction of oxygen to the control module;
the control module compares the received oxygen volume fraction with an oxygen volume fraction threshold value, and when the oxygen volume fraction is larger than or equal to the oxygen volume fraction threshold value, the gas dilution module communicated with the floating disc sealed space is controlled to charge dilution gas into the oil-gas mixed gas in the floating disc sealed space for dilution, so that the oxygen volume fraction is reduced to be lower than the oxygen volume fraction threshold value.
2. The method for preventing oil and gas explosion of a crude oil storage tank according to claim 1, wherein the control module is externally connected with an operation and control module, and the operation and control module is used for displaying the oxygen volume fraction and setting an oxygen volume fraction threshold value.
3. The method for preventing oil and gas explosion of a crude oil storage tank according to claim 1 or 2, wherein the number of the oxygen concentration measurement modules is single or a plurality of the oxygen concentration measurement modules are uniformly distributed.
4. The method of claim 3, wherein the oxygen concentration measurement module measures oxygen concentration by spectral absorption or chemical catalysis.
5. The utility model provides a prevent device that crude oil storage tank oil gas fires explodes which characterized in that includes: the device comprises an oxygen concentration measuring module (1), a control module (3), a gas diluting module (4) and a floating disc (9);
the oxygen concentration measuring module (1) is fixed on the surface of a floating plate (9) of the crude oil storage tank (7), and the oxygen concentration measuring module (1) is positioned in a floating plate sealing space (6) formed by the floating plate (9), a crude oil liquid surface (8) and the inner wall of the crude oil storage tank (7);
the oxygen concentration measuring module (1) is in signal connection with the control module (3), and the control module (3) is in signal connection with the gas diluting module (4);
the gas dilution module (4) is communicated with the floating disc sealed space (6) through a pipeline (5).
6. The device for preventing oil and gas explosion of a crude oil storage tank according to claim 5, wherein the control module (3) is also electrically connected with the control module (2).
7. The apparatus for preventing oil and gas explosion of a crude oil storage tank according to claim 5, wherein the gas dilution module (4) comprises a gas injection device storing dilution gas and capable of adjusting flow rate.
8. The device for preventing oil and gas explosion of a crude oil storage tank according to claim 5, wherein the number of the oxygen concentration measurement modules (1) is single or a plurality of the oxygen concentration measurement modules are uniformly distributed.
9. The device for preventing oil and gas burning explosion of the crude oil storage tank according to claim 5 or 8, wherein the surface of the oxygen concentration measurement module (1) is provided with an air inlet hole and an air outlet hole for ensuring the intercommunication of the gas to be measured in the oxygen concentration measurement module (1) and the external gas.
10. The device for preventing oil and gas explosion of a crude oil storage tank according to claim 5 or 8, wherein the oxygen concentration measuring module (1) is internally plated with an oleophobic membrane;
or a protection device formed by a waterproof, oil-proof and breathable functional material is arranged in the oxygen concentration measurement module (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010122062.5A CN111319884A (en) | 2020-02-27 | 2020-02-27 | Method and device for preventing oil gas of crude oil storage tank from burning and exploding |
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| CN202010122062.5A CN111319884A (en) | 2020-02-27 | 2020-02-27 | Method and device for preventing oil gas of crude oil storage tank from burning and exploding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114476402A (en) * | 2020-10-26 | 2022-05-13 | 苏州润谷智能设备有限公司 | Large-scale jar of body sampling device |
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