CN113685840A - Nitrogen filling maintenance system and method for water wall of power station boiler - Google Patents
Nitrogen filling maintenance system and method for water wall of power station boiler Download PDFInfo
- Publication number
- CN113685840A CN113685840A CN202111153213.4A CN202111153213A CN113685840A CN 113685840 A CN113685840 A CN 113685840A CN 202111153213 A CN202111153213 A CN 202111153213A CN 113685840 A CN113685840 A CN 113685840A
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- nitrogen
- water wall
- maintenance
- storage tank
- boiler
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 282
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 137
- 238000012423 maintenance Methods 0.000 title claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 37
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 8
- 238000005260 corrosion Methods 0.000 claims description 19
- 230000007797 corrosion Effects 0.000 claims description 19
- 238000012360 testing method Methods 0.000 claims description 14
- 239000010935 stainless steel Substances 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- 239000010962 carbon steel Substances 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 238000011156 evaluation Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
- F23M5/08—Cooling thereof; Tube walls
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/02—Preparation of nitrogen
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention provides a nitrogen charging maintenance system and a method for a water wall of a power station boiler, wherein the maintenance system comprises: nitrogen machine, nitrogen gas storage tank, detection case, computer to and pressure sensor, nitrogen gas sensor, the humidity transducer of connection on the detection case, nitrogen machine and nitrogen gas storage tank provide and fill nitrogen maintenance nitrogen gas, computer, detection case, motorised valve constitute automatic nitrogen maintenance control system that fills. The invention can realize the automatic nitrogen filling maintenance of the boiler water wall, realize the online monitoring control of the nitrogen pressure, the nitrogen purity and the relative humidity in the water wall, and avoid the difficult problem of poor detection data representativeness caused by the non-circulation of the internal nitrogen; the equipment is simple, the operation is convenient, and the manual work load is small.
Description
Technical Field
The invention belongs to the field of maintenance of boiler water walls, and particularly relates to a nitrogen filling maintenance system and method for a water wall of a power station boiler.
Background
The boiler water-cooling wall of the thermal power generating unit is mostly made of carbon steel low-grade materials, and during the period of stopping use, if effective protection measures are not taken, large-area stopping corrosion is caused, corrosion products are accumulated, the heat exchange efficiency of the boiler is reduced, the starting time of the unit is prolonged, even starting pipe explosion accidents occur, and the like, so that the safe and economic operation of a power plant is seriously influenced. Therefore, utility boiler water walls should take effective protective measures during outages to reduce the corrosion hazard during outages.
In the existing nitrogen filling maintenance technology, a nitrogen cylinder is mostly adopted as a nitrogen source, manual monitoring is carried out and replacement is carried out, and only the nitrogen pressure in a maintenance system is monitored and controlled. Since oxygen in the equipment cannot be completely removed, the problem of shutdown corrosion of metal in the presence of residual water cannot be completely avoided, and the purity and relative humidity of nitrogen in a maintained system are important points to be monitored and controlled. The nitrogen filling maintenance method aims at the problems that maintenance parameters need to be manually collected in the existing nitrogen filling maintenance technology, the maintenance parameter detection is incomplete, the accuracy of the monitoring parameters is low, and the workload is large.
Disclosure of Invention
Based on the problem of power station boiler water wall out-of-service maintenance, the invention provides a power station boiler water wall nitrogen filling maintenance system and method, which can realize automatic nitrogen filling maintenance of a boiler water wall, realize on-line monitoring control of nitrogen pressure, nitrogen purity and relative humidity in the water wall, avoid the problems of poor detection data representativeness, large manual acquisition workload and large difficulty caused by non-circulation of internal nitrogen, and simultaneously realize real-time detection of maintenance effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a nitrogen-filling maintenance system for a water wall of a power station boiler comprises: the system comprises a nitrogen making machine, a nitrogen storage tank, a boiler water wall, a detection box and a computer;
the outlet of the nitrogen making machine is connected with the inlet of the nitrogen storage tank;
an outlet of the nitrogen storage tank is connected with an inlet of a boiler water-cooled wall, an outlet of the boiler water-cooled wall is connected with an inlet of a detection box, and an outlet of the detection box is emptied;
a corrosion test piece is hung in the detection box; the top of the detection box is provided with a pressure sensor, a nitrogen sensor and a humidity sensor;
and the computer is electrically connected with the pressure sensor, the nitrogen sensor and the humidity sensor.
As a further improvement of the invention, a first electric valve is arranged on an outlet of the nitrogen storage tank, and a second electric valve is arranged on an outlet of the detection box;
the computer is electrically connected to both the first electrically operated valve and the second electrically operated valve.
As a further improvement of the invention, a pressure sensor is arranged on the nitrogen storage tank, and the pressure sensor is connected with the nitrogen making machine.
As a further improvement of the invention, the nitrogen making machine is connected with the nitrogen storage tank through a stainless steel pipeline, and the nitrogen storage tank is connected with an inlet pipeline of a water wall of the boiler through a stainless steel pipe; and the outlet of the water-cooled wall of the boiler is connected with the top of the detection box through a stainless steel pipeline.
As a further improvement of the invention, the material of the corrosion test piece is the same as that of the boiler water wall, and the material is one or more of carbon steel, alloy steel and stainless steel.
A maintenance method of a nitrogen filling maintenance system of a water wall of a power station boiler is characterized by comprising the following steps:
suspending the corrosion test piece in a detection box;
starting a nitrogen making machine, wherein nitrogen sequentially enters a nitrogen storage tank, a water-cooled wall and a detection box and is discharged into the atmosphere;
the computer automatically controls and carries out nitrogen filling maintenance on the water wall of the boiler according to the automatic control logic; after the maintenance, the corrosion test piece is taken out for evaluation of the maintenance effect.
As a further improvement of the invention, the nitrogen making purity of the nitrogen making machine is more than 99 percent, and the nitrogen making pressure is more than 0.5 MPa.
As a further improvement of the present invention, the performing nitrogen-filling maintenance on the water wall of the boiler according to the automatic control logic specifically comprises:
setting nitrogen pressure, nitrogen purity and relative humidity threshold values on a computer, periodically and automatically opening an electric valve and an electric valve to replace nitrogen in a water wall, automatically closing the electric valve when the nitrogen purity of feedback signals of a nitrogen sensor and a humidity sensor is higher than the set threshold value and the relative humidity is lower than the set threshold value, and automatically closing the electric valve when the nitrogen pressure of feedback signals of the pressure sensor is higher than the set threshold value.
As a further improvement of the invention, the opening period of the electric valve and the electric valve set by the computer is 24-120 h.
The technical scheme provided by the invention has the following beneficial effects:
the invention provides a nitrogen filling maintenance system for a water wall of a power station boiler, which comprises a nitrogen making machine and a nitrogen storage tank, realizes automatic preparation of nitrogen, comprises a detection box, can be used for hanging corrosion test pieces made of different materials at the same time, determines the parameter condition in the water wall of the boiler by measuring the nitrogen pressure, the nitrogen purity and the relative humidity in the box, and realizes automatic control of nitrogen filling maintenance of the water wall of the boiler according to the logic setting of a computer. By the technical scheme provided by the invention, the automatic nitrogen filling maintenance of the water wall of the boiler can be realized, the online monitoring control of the nitrogen pressure, the nitrogen purity and the relative humidity in the water wall can be realized, the difficult problem of poor representativeness of detection data caused by the non-circulation of the internal nitrogen is avoided, and meanwhile, the real-time detection of the maintenance effect can be realized; the equipment is simple, the operation is convenient, and the manual work load is small.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. In the drawings:
FIG. 1 is a schematic diagram of a nitrogen charging maintenance system for a water wall of a power station boiler provided by an embodiment of the invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right with reference to the accompanying drawings, unless otherwise specified.
In order to improve the nitrogen filling maintenance effect of the water wall of the boiler, the nitrogen pressure, the nitrogen purity and the relative humidity in the system need to be considered at the same time, in order to realize the implementation of the online monitoring and the automatic nitrogen filling maintenance of the above-mentioned influencing factors, the embodiment provides a nitrogen filling maintenance system for the water wall of the power station boiler, which comprises: the system comprises a nitrogen making machine 1, a nitrogen storage tank 2, a boiler water wall 3, a detection box 4 and a computer 5;
the outlet of the nitrogen making machine 1 is connected with the inlet of the nitrogen storage tank 2;
an outlet of the nitrogen storage tank 2 is connected with an inlet of a boiler water-cooling wall 3, an outlet of the boiler water-cooling wall 3 is connected with an inlet of a detection box 4, and an outlet of the detection box 4 is emptied;
a corrosion test piece 12 is hung in the detection box 4; the top of the detection box 4 is provided with a pressure sensor 9, a nitrogen sensor 10 and a humidity sensor 11;
and the computer 5 is electrically connected with the pressure sensor 9, the nitrogen sensor 10 and the humidity sensor 11.
The present invention will be described in detail below with reference to specific embodiments and the accompanying drawings.
Referring to fig. 1, the nitrogen charging maintenance system includes:
the nitrogen making machine 1 is used for preparing nitrogen required by nitrogen filling maintenance;
the nitrogen storage tank 2 is used for storing prepared nitrogen and controlling the automatic start and stop of the nitrogen making machine 1 through the output signal of a pressure sensor 6 on the nitrogen storage tank 2;
a boiler water cooled wall 3;
the top of the detection box 4 is provided with a pressure sensor 9, a nitrogen sensor 10 and a humidity sensor 11 which are used for collecting the pressure, the nitrogen purity and the relative humidity in the water wall system;
the interior can hang the corrosion test block 12, is used for evaluating and charging nitrogen and maintaining the effect;
the computer 7 is used for acquiring sensor signals and sending control instructions; the non-vaporized corrosion inhibitor particles and powder are filtered.
The maintenance method based on the station boiler water wall nitrogen filling maintenance system comprises the following steps:
firstly, suspending a corrosion test piece 12 in a detection box 4; manually controlling to open the electric valves 7 and 8; starting the nitrogen generator 1, enabling nitrogen to sequentially enter the nitrogen storage tank 2, the water-cooled wall 3 and the detection box 4, and discharging the nitrogen into the atmosphere; starting a computer 5 for automatic control, and carrying out nitrogen filling maintenance on the water wall of the boiler by the computer 5 according to an automatic control logic; after the maintenance is finished, the computer 5 is closed, the electric valve 7 is closed, the electric valve 8 is opened, the corrosion test piece is taken out after the detection box is reduced to the normal pressure, and the maintenance effect is evaluated.
In a preferred embodiment of the present invention, the nitrogen making purity of the nitrogen making machine 2 is greater than 99%, and the nitrogen making pressure is greater than 0.5 MPa.
In a preferred embodiment of the present invention, the corrosion test piece 12 is made of the same material as the boiler water wall, and may be one or more of carbon steel, alloy steel, and stainless steel.
In a preferred embodiment of the present invention, the computer 5 may manually and automatically control the electric valves 7 and 8, wherein the automatic control logic relationship is that the computer 5 sets nitrogen pressure, nitrogen purity and relative humidity threshold values, the electric valves 7 and 8 are periodically and automatically opened to replace nitrogen in the water wall, the electric valve 8 is automatically closed when the nitrogen purity is higher than the set threshold value and the relative humidity is lower than the set threshold value through feedback signals of the nitrogen sensor 10 and the humidity sensor 11, and the electric valve 7 is automatically closed when the nitrogen pressure is higher than the set threshold value through feedback signals of the pressure sensor 9.
In a preferred embodiment of the present invention, the opening period of the electric valves 7 and 8 set by the computer 5 is 24 to 120 hours.
It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is considered as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the applicant consider that such subject matter is not considered part of the disclosed subject matter.
Claims (9)
1. The utility model provides a power plant boiler water wall fills nitrogen maintenance system which characterized in that includes: the system comprises a nitrogen making machine (1), a nitrogen storage tank (2), a boiler water wall (3), a detection box (4) and a computer (5);
the outlet of the nitrogen making machine (1) is connected with the inlet of the nitrogen storage tank (2);
an outlet of the nitrogen storage tank (2) is connected with an inlet of a boiler water-cooled wall (3), an outlet of the boiler water-cooled wall (3) is connected with an inlet of a detection box (4), and an outlet of the detection box (4) is emptied;
a corrosion test piece (12) is suspended in the detection box (4); the top of the detection box (4) is provided with a pressure sensor (9), a nitrogen sensor (10) and a humidity sensor (11);
and the computer (5) is electrically connected with the pressure sensor (9), the nitrogen sensor (10) and the humidity sensor (11).
2. The utility boiler water wall nitrogen filling maintenance system of claim 1, characterized in that:
a first electric valve (7) is arranged on an outlet of the nitrogen storage tank (2), and a second electric valve (8) is arranged on an outlet of the detection box (4);
the computer (5) is electrically connected with the first electric valve (7) and the second electric valve (8).
3. The utility boiler water wall nitrogen filling maintenance system of claim 1, characterized in that:
be provided with pressure sensor (6) on nitrogen gas storage tank (2), pressure sensor (6) are connected with nitrogen generator (1).
4. The utility boiler water wall nitrogen filling maintenance system of claim 1, characterized in that:
the nitrogen making machine (1) is connected with the nitrogen storage tank (2) through a stainless steel pipeline, and the nitrogen storage tank (2) is connected with an inlet pipeline of the boiler water wall (3) through a stainless steel pipe; and an outlet of the boiler water-cooled wall (3) is connected with the top of the detection box (4) through a stainless steel pipeline.
5. The utility boiler water wall nitrogen filling maintenance system of claim 1, characterized in that:
the material of the corrosion test piece (12) is the same as that of a boiler water-cooled wall, and the material is one or more of carbon steel, alloy steel and stainless steel.
6. The method for maintaining the nitrogen charging system for the water wall of the power station boiler as defined in any one of claims 1 to 5, comprising the steps of:
suspending the corrosion test piece (12) in the detection box (4);
starting a nitrogen making machine (1), wherein nitrogen sequentially enters a nitrogen storage tank (2), a water-cooled wall (3) and a detection box (4) and is discharged into the atmosphere;
the computer (5) automatically controls and carries out nitrogen charging maintenance on the water wall of the boiler according to the automatic control logic; after the maintenance, the corrosion test piece is taken out for evaluation of the maintenance effect.
7. The power station boiler water wall nitrogen charging maintenance method of claim 6,
the nitrogen making purity of the nitrogen making machine (2) is more than 99 percent, and the nitrogen making pressure is more than 0.5 MPa.
8. The maintenance method of the nitrogen charging maintenance system for the water wall of the utility boiler according to the claim 6, wherein the nitrogen charging maintenance of the water wall of the boiler according to the automatic control logic specifically comprises the following steps:
the nitrogen pressure, the nitrogen purity and the relative humidity threshold value are set on the computer (5), the electric valve (7) and the electric valve (8) are automatically opened periodically to replace nitrogen in the water wall, the electric valve (8) is automatically closed when the nitrogen sensor (10) and the humidity sensor (11) feed back signals that the nitrogen purity is higher than the set threshold value and the relative humidity is lower than the set threshold value, and the electric valve (7) is automatically closed when the pressure sensor (9) feeds back signals that the nitrogen pressure is higher than the set threshold value.
9. The maintenance method of the nitrogen charging maintenance system for the water wall of the power station boiler as claimed in claim 8, characterized in that the opening period of the electric valve (7) and the electric valve (8) set by the computer (5) is 24-120 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111153213.4A CN113685840A (en) | 2021-09-29 | 2021-09-29 | Nitrogen filling maintenance system and method for water wall of power station boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111153213.4A CN113685840A (en) | 2021-09-29 | 2021-09-29 | Nitrogen filling maintenance system and method for water wall of power station boiler |
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| CN113685840A true CN113685840A (en) | 2021-11-23 |
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| CN202111153213.4A Pending CN113685840A (en) | 2021-09-29 | 2021-09-29 | Nitrogen filling maintenance system and method for water wall of power station boiler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811566A (en) * | 2022-03-11 | 2022-07-29 | 福建华电邵武能源有限公司 | Intelligent boiler shutdown protection process for starting boiler of thermal power generating unit |
| CN114811564A (en) * | 2022-03-11 | 2022-07-29 | 华电电力科学研究院有限公司 | Intelligent nitrogen shutdown protection process for thermal power generating unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5809913A (en) * | 1996-10-15 | 1998-09-22 | Cinergy Technology, Inc. | Corrosion protection for utility boiler side walls |
| CN203345510U (en) * | 2013-05-27 | 2013-12-18 | 中国人民解放军后勤工程学院 | Nitrogen charging device for oil tank |
| CN207569859U (en) * | 2017-11-13 | 2018-07-03 | 南通亚泰工程技术有限公司 | A kind of inert gas generating device containing dual fuel burner |
| CN108644016A (en) * | 2018-03-26 | 2018-10-12 | 杭州意能电力技术有限公司 | Gas-steam combined cycle set therrmodynamic system stops spare corrosion protection technique |
| CN209702864U (en) * | 2019-04-12 | 2019-11-29 | 大唐吉木萨尔五彩湾北一发电有限公司 | Device for nitrogen maintenance boiler |
| CN210396827U (en) * | 2019-08-12 | 2020-04-24 | 中电华创电力技术研究有限公司 | Thermal power plant thermal equipment shutdown protection system |
| CN211568926U (en) * | 2019-12-15 | 2020-09-25 | 邸冬青 | Nitrogen safety automatic protection system for steel normal-pressure oil product storage tank |
| CN113310512A (en) * | 2021-05-17 | 2021-08-27 | 扬州华大锅炉有限公司 | Thermodynamic system corrosion protection on-line detection device for hot water boiler |
-
2021
- 2021-09-29 CN CN202111153213.4A patent/CN113685840A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5809913A (en) * | 1996-10-15 | 1998-09-22 | Cinergy Technology, Inc. | Corrosion protection for utility boiler side walls |
| CN203345510U (en) * | 2013-05-27 | 2013-12-18 | 中国人民解放军后勤工程学院 | Nitrogen charging device for oil tank |
| CN207569859U (en) * | 2017-11-13 | 2018-07-03 | 南通亚泰工程技术有限公司 | A kind of inert gas generating device containing dual fuel burner |
| CN108644016A (en) * | 2018-03-26 | 2018-10-12 | 杭州意能电力技术有限公司 | Gas-steam combined cycle set therrmodynamic system stops spare corrosion protection technique |
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| CN211568926U (en) * | 2019-12-15 | 2020-09-25 | 邸冬青 | Nitrogen safety automatic protection system for steel normal-pressure oil product storage tank |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811566A (en) * | 2022-03-11 | 2022-07-29 | 福建华电邵武能源有限公司 | Intelligent boiler shutdown protection process for starting boiler of thermal power generating unit |
| CN114811564A (en) * | 2022-03-11 | 2022-07-29 | 华电电力科学研究院有限公司 | Intelligent nitrogen shutdown protection process for thermal power generating unit |
| CN114811566B (en) * | 2022-03-11 | 2024-03-29 | 福建华电邵武能源有限公司 | Intelligent shutdown protection process for starting boiler of thermal power generating unit |
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Application publication date: 20211123 |