CN210974107U - Special nitrogen deoxidization aeration equipment of current conversion station - Google Patents
Special nitrogen deoxidization aeration equipment of current conversion station Download PDFInfo
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- CN210974107U CN210974107U CN201921521149.9U CN201921521149U CN210974107U CN 210974107 U CN210974107 U CN 210974107U CN 201921521149 U CN201921521149 U CN 201921521149U CN 210974107 U CN210974107 U CN 210974107U
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- aeration
- nitrogen gas
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- cavity
- nitrogen
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 140
- 238000005273 aeration Methods 0.000 title claims abstract description 87
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 title abstract description 4
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 56
- 238000006392 deoxygenation reaction Methods 0.000 claims description 6
- 229910000619 316 stainless steel Inorganic materials 0.000 claims description 3
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 36
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 21
- 238000001816 cooling Methods 0.000 abstract description 21
- 239000001301 oxygen Substances 0.000 abstract description 21
- 229910052760 oxygen Inorganic materials 0.000 abstract description 21
- 239000007864 aqueous solution Substances 0.000 abstract description 18
- 239000000203 mixture Substances 0.000 description 9
- 239000000498 cooling water Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Physical Water Treatments (AREA)
Abstract
The utility model discloses a special nitrogen gas deoxidization aeration equipment of current conversion station, including the aeration main cavity body, be equipped with nitrogen gas air inlet and a plurality of nitrogen gas outlet on the aeration main cavity body, nitrogen gas air inlet and a plurality of nitrogen gas outlet respectively with the inner chamber intercommunication of the aeration main cavity body, still be equipped with the air duct on the aeration main cavity body, the inner chamber intercommunication, the other end of the air duct one end and the aeration main cavity body are equipped with the pipe export. The utility model discloses can make the contact of nitrogen gas and unit volume aqueous solution more abundant, improve nitrogen content in the aqueous solution, and then reduce oxygen content in the aqueous solution, really improve nitrogen gas deoxidization efficiency, effectively solve the too high problem of cold water dissolved oxygen content in the converter station valve cooling system.
Description
Technical Field
The utility model relates to a converter station deoxidization equipment, concretely relates to special nitrogen gas deoxidization aeration equipment of converter station.
Background
Each valve group of the direct current converter station is provided with an independent valve cooling system, the system consists of an inner water cooling system and an outer water cooling system, and the inner water cooling system directly cools the converter valve, so that overheating of converter valve equipment is avoided, and overheating damage and accelerated aging of components such as a thyristor are caused. A certain number of platinum electrodes for clamping the potential of an internal cooling water channel and inhibiting electrolytic current are arranged on a water cooling system pipeline in a valve tower for cooling the converter valve. Research by the Chinese institute of electrical science and technology shows that the higher the content of dissolved oxygen in the cold water is, the more easily the platinum electrode is scaled, which seriously affects the conductivity and seriously threatens the stable operation of the converter valve. After valve tower maintenance, internal water cooling system repair and internal cooling water discharge, the dissolved oxygen content of the internal cooling water is generally about 2000ppb, the national network industry standard is not more than 200ppb, and the oxygen content seriously exceeds the standard. Therefore, when the valve tower is overhauled, the internal water cooling system is repaired and the internal water cooling system is drained, the dissolved oxygen of the internal water cooling system needs to be removed.
At present, nitrogen deoxygenation equipment in a converter station and operation characteristics are as follows: (1) all domestic convertor stations adopting the high-billow and high-critical valve cooling system have no real, quick and safe nitrogen deoxygenation function of the valve cooling system; (2) in the natural operation process, the nitrogen replaces the dissolved oxygen for more than 40 days generally, and the dissolved oxygen in the internal cooling water can be reduced to be less than 200ppb, and the current domestic convertor stations basically adopt the mode; (3) when the valve tower is overhauled, the internal water cooling system is repaired and internal cooling water is discharged, although a closed container is adopted, a large amount of oxygen still enters the internal cooling water, and the content of dissolved oxygen in the internal cooling water is seriously exceeded. Therefore, how to improve the performance of the nitrogen oxygen removal equipment in the converter station becomes a key technical problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem who solves: to the above-mentioned problem of prior art, provide a special nitrogen gas deoxidization aeration equipment of converter station, the utility model discloses can make the contact of nitrogen gas and unit volume aqueous solution more abundant, improve nitrogen gas content in the aqueous solution, and then reduce oxygen content in the aqueous solution, really improve nitrogen gas deoxidization efficiency, effectively solve the too high problem of cold water dissolved oxygen content in the valve cooling system of converter station.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the utility model provides a special nitrogen gas deoxidization aeration equipment of current conversion station, including the aeration main cavity body, be equipped with nitrogen gas air inlet and a plurality of nitrogen gas outlet on the aeration main cavity body, nitrogen gas air inlet and a plurality of nitrogen gas outlet respectively with the inner chamber intercommunication of the aeration main cavity body, still be equipped with the air duct on the aeration main cavity body, the inner chamber intercommunication, the other end of the air duct one end and the aeration main cavity body are equipped with the pipe export.
Optionally, the air ducts are distributed around the main aeration cavity.
Optionally, the air ducts distributed around the main aeration cavity are arranged in layers.
Optionally, the number of layers of the layered arrangement is three.
Optionally, a connecting flange is arranged at one end of the air duct communicated with the inner cavity of the main aeration cavity, and the connecting flange is connected with the main aeration cavity in a threaded connection manner and communicated with the inner cavity of the main aeration cavity.
Optionally, the plurality of nitrogen gas outlets are distributed at the top of the main aeration cavity.
Optionally, the main aeration cavity is a hollow cylinder structure.
Optionally, the main aeration cavity has a weight of 2kg or more or is provided with a weight block of 2kg or more.
Optionally, the nitrogen inlet is located at the bottom of the main aeration cavity, and an air inlet pipeline is installed at the nitrogen inlet.
Optionally, the air inlet pipeline, the main aeration cavity and the air duct are all made of 316 stainless steel.
Compared with the prior art, the utility model has the advantages of as follows: the utility model discloses combine the characteristics and the requirement of cold water deoxidization in the valve cooling system of convertor station, make the contact of nitrogen gas and unit volume aqueous solution more abundant, improve nitrogen content in the aqueous solution, and then reduce oxygen content in the aqueous solution, really improve nitrogen gas deoxidization efficiency, effectively solve the too high problem of cold water dissolved oxygen content in the valve cooling system of convertor station, have simple structure, low cost's advantage.
Drawings
Fig. 1 is a schematic top view of an apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic side view of a device according to an embodiment of the present invention.
Illustration of the drawings: 1. an aerated main chamber body; 11. a nitrogen inlet; 12. a nitrogen gas outlet; 13. an air intake duct; 2. an air duct; 21. and (4) a pipe outlet.
Detailed Description
As shown in fig. 1 and fig. 2, this embodiment provides a special nitrogen deoxidization aeration equipment of converter station, including the aeration main cavity body 1, be equipped with nitrogen gas inlet 11 and a plurality of nitrogen gas outlet 12 on the aeration main cavity body 1, nitrogen gas inlet 11 and a plurality of nitrogen gas outlet 12 respectively with the inner chamber intercommunication of the aeration main cavity body 1, still be equipped with air duct 2 on the aeration main cavity body 1, air duct 2 one end and the inner chamber intercommunication, the other end of the aeration main cavity body 1 are equipped with a tub export 21. On one hand, the nitrogen oxygen-removing aeration device special for the converter station can directly output nitrogen on the surface of the aeration main cavity 1 through the plurality of nitrogen gas outlets 12 to form a mixture of water and nitrogen gas, so that the content of nitrogen gas in the water solution near the surface of the aeration main cavity 1 is increased, and the nitrogen gas can be more fully contacted with the water solution in unit volume; on the other hand, nitrogen can be output at a far position of the aeration main cavity body 1 through the gas guide tube 2 to form a mixture of water and nitrogen, so that the content of nitrogen in the water solution at the far position of the aeration main cavity body 1 is improved, the contact of nitrogen and the water solution in unit volume is more sufficient, the content of nitrogen in the water solution is improved, the content of oxygen in the water solution is further reduced, the nitrogen deoxygenation efficiency is really improved, the problem that the content of dissolved oxygen in cold water in a cooling system of a converter station is too high is effectively solved, and the device has the.
As shown in fig. 2, the gas-guiding tubes 2 are distributed around the main aeration chamber 1, so that a mixture of water and nitrogen can be formed around the main aeration chamber 1, and the nitrogen can be contacted with the aqueous solution per unit volume more fully.
As shown in figure 2, the air ducts 2 distributed around the main aeration cavity 1 are arranged in a layered manner, so that nitrogen is output around the main aeration cavity 1 to form a mixture of water and nitrogen, and the nitrogen content in the water solution is increased.
As shown in fig. 2, the number of layers arranged in layers is three, so that the nitrogen output around the main aeration cavity 1 can be more sufficient to form the nitrogen in the mixture of water and nitrogen, and the nitrogen content in the aqueous solution can be increased. Of course, more or fewer layers, such as one, two, or more than three layers, may be used as desired.
In this embodiment, distribute in the crooked heliciform of formation of air duct 2 all around of aeration main cavity body 1 and arrange, make the pipe export 21 spun high-speed nitrogen gas of air duct 2 can be owing to export nitrogen gas all around at aeration main cavity body 1 along tangential direction's speed and form the flow swirl of water and nitrogen gas mixture, make the contact of nitrogen gas and unit volume aqueous solution more abundant, improve nitrogen gas content in the aqueous solution, and then reduce oxygen content in the aqueous solution, really improve nitrogen gas deoxidization efficiency, effectively solve the too high problem of cold water dissolved oxygen content in the converter station valve cooling system.
In this embodiment, the one end of the inner chamber intercommunication of air duct 2 and the aeration main cavity body 1 is equipped with flange, flange pass through threaded connection's mode and the aeration main cavity body 1 link to each other and with the inner chamber intercommunication of the aeration main cavity body 1, conveniently communicate the tubule and dismantle and change. Combine above-mentioned detachable construction, can form three kinds of length and length in proper order and shorten or lengthen in proper order with three-layer air duct 2 from the top down to it is bigger to make the size that the flowing swirl of output nitrogen gas formation water and nitrogen gas mixture around the aeration main cavity body 1, makes the contact of nitrogen gas and unit volume aqueous solution more abundant.
As shown in fig. 1 and 2, the plurality of nitrogen gas outlets 12 are distributed at the top of the aeration main cavity 1, so that nitrogen gas in the cavity can form a large amount of nitrogen gas bubbles through the plurality of nitrogen gas outlets 12, and the nitrogen gas can be fully contacted with an external water environment.
As shown in fig. 1 and 2, the aeration main chamber 1 is a hollow cylinder structure, is convenient to process, and is favorable for forming a flow vortex of a mixture of water and nitrogen around the aeration main chamber 1, and the size of the aeration main chamber 1 is adjusted according to the size of the space.
In this embodiment, the weight of the main aeration cavity 1 is more than 2kg or a weight block with more than 2kg is installed, so that the floating condition in water during aeration can be prevented, and the stable and reliable aeration is ensured.
In this embodiment, the nitrogen inlet 11 is located at the bottom of the main aeration chamber 1, and the nitrogen inlet 11 is provided with the air inlet pipe 13, and the air inlet pipe 13 is communicated with the inner chamber of the main aeration chamber 1, so that nitrogen can enter the inner chamber of the main aeration chamber 1. Through above-mentioned structure for admission line 13 can not influence aeration main cavity 1 around and the water and nitrogen gas mixture's at top flow property and direction, makes the contact of nitrogen gas and unit volume aqueous solution more abundant, improves nitrogen gas content in the aqueous solution, and then reduces oxygen content in the aqueous solution, really improves nitrogen gas deoxidization efficiency, effectively solves the too high problem of cold water dissolved oxygen content in the valve cooling system of convertor station. In addition, in order to further improve the nitrogen deoxygenation efficiency, a rotatable rotating ring can be arranged on the outer wall of the periphery of the main aeration cavity 1 according to requirements, the inner side of the rotating ring and the main aeration cavity 1 are communicated with each other and are provided with a sealing structure and a driving mechanism for driving the rotating ring to rotate, and the air guide pipes 2 are all arranged on the rotating ring; the driving mechanism comprises a frequency converter, a motor and a transmission assembly, the frequency converter is connected with the motor, an output shaft of the motor is connected with the transmission assembly, the transmission assembly specifically adopts a gear so as to rotate with a driving rotating ring through meshing with inner teeth on the inner wall of the rotating ring, and the linear adjustment of the rotating speed of the rotating ring based on the nitrogen flow rate can be realized through the structure, so that the technical effect of nitrogen deoxygenation efficiency is improved, and the problem of overhigh content of dissolved oxygen in cold water in a cooling system of a converter station valve is effectively solved.
In this embodiment, the air inlet pipe 13, the aeration main cavity 1 and the air duct 2 are all made of 316 stainless steel, which can play the roles of reducing corrosion and prolonging service life.
The utility model discloses a protection scope is not limited to the converter station nitrogen gas deoxidization water storage device of fixed voltage level, just can satisfy more demands through changing utility model's functional parameter. It is obvious to those skilled in the art that the present invention may be modified in size and structure of some parts without departing from the scope and spirit of the present invention. It is intended that the utility model also includes such modifications and variations as come within the scope of the appended claims and their equivalents.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides a special nitrogen gas deoxidization aeration equipment of converter station, its characterized in that, includes the aeration main cavity body (1), be equipped with nitrogen gas air inlet (11) and a plurality of nitrogen gas outlet (12) on the aeration main cavity body (1), nitrogen gas air inlet (11) and a plurality of nitrogen gas outlet (12) communicate with the inner chamber of the aeration main cavity body (1) respectively, still be equipped with air duct (2) on the aeration main cavity body (1), inner chamber intercommunication, the other end of air duct (2) one end and the aeration main cavity body (1) are equipped with tub export (21).
2. The nitrogen oxygen-removing aeration device special for the converter station according to claim 1, wherein the gas-guide tubes (2) are distributed around the main aeration cavity (1).
3. The nitrogen oxygen-removing aeration device special for the converter station according to claim 2, wherein the air ducts (2) distributed around the main aeration cavity (1) are arranged in layers.
4. The nitrogen oxygen removal aeration device special for the converter station according to claim 3, wherein the number of layers in the layered arrangement is three.
5. The nitrogen oxygen-removing aeration device special for the converter station according to claim 1, wherein a connecting flange is arranged at one end of the air duct (2) communicated with the inner cavity of the main aeration cavity (1), and the connecting flange is connected with the main aeration cavity (1) in a threaded connection manner and communicated with the inner cavity of the main aeration cavity (1).
6. The nitrogen deoxygenation aeration device dedicated to a converter station according to claim 1, characterized in that said plurality of nitrogen gas outlet ports (12) are distributed at the top of the main aeration chamber (1).
7. The nitrogen oxygen-removing aeration device special for the converter station according to claim 1, characterized in that the main aeration cavity (1) is a hollow cylinder structure.
8. The nitrogen oxygen removal aeration device special for the converter station according to claim 1, wherein the main aeration cavity (1) has a weight of 2kg or more or is provided with a weight block of 2kg or more.
9. The nitrogen oxygen-removing aeration device special for the converter station according to claim 1, wherein the nitrogen gas inlet (11) is positioned at the bottom of the main aeration cavity (1), and a gas inlet pipeline (13) is installed at the nitrogen gas inlet (11).
10. The nitrogen oxygen-removing aeration device special for the converter station according to claim 9, wherein the air inlet pipeline (13), the main aeration cavity (1) and the air guide pipe (2) are all made of 316 stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921521149.9U CN210974107U (en) | 2019-09-12 | 2019-09-12 | Special nitrogen deoxidization aeration equipment of current conversion station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921521149.9U CN210974107U (en) | 2019-09-12 | 2019-09-12 | Special nitrogen deoxidization aeration equipment of current conversion station |
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| CN210974107U true CN210974107U (en) | 2020-07-10 |
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| CN201921521149.9U Active CN210974107U (en) | 2019-09-12 | 2019-09-12 | Special nitrogen deoxidization aeration equipment of current conversion station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550752A (en) * | 2019-09-12 | 2019-12-10 | 国网湖南省电力有限公司 | Special nitrogen deoxidization aeration equipment of current conversion station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550752A (en) * | 2019-09-12 | 2019-12-10 | 国网湖南省电力有限公司 | Special nitrogen deoxidization aeration equipment of current conversion station |
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