CN108310888B - Passive particulate matter removing device of supercritical system - Google Patents
Passive particulate matter removing device of supercritical system Download PDFInfo
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- CN108310888B CN108310888B CN201810260458.9A CN201810260458A CN108310888B CN 108310888 B CN108310888 B CN 108310888B CN 201810260458 A CN201810260458 A CN 201810260458A CN 108310888 B CN108310888 B CN 108310888B
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- 239000013618 particulate matter Substances 0.000 title claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 41
- 238000003756 stirring Methods 0.000 claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- 239000006096 absorbing agent Substances 0.000 claims description 16
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000002041 carbon nanotube Substances 0.000 claims description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 239000011358 absorbing material Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 32
- 239000000428 dust Substances 0.000 description 18
- 239000012535 impurity Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001089 thermophoresis Methods 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning In General (AREA)
- Cyclones (AREA)
Abstract
The invention discloses a supercritical system passive particulate matter removal device which comprises an outer cylinder body (3), a fluid inlet end (1) and a fluid outlet end (2) which are positioned at two ends of the outer cylinder body (3), wherein the fluid inlet end (1) is provided with a passive energy part, the passive energy part comprises a fixed seat (7), windmill blades (5) arranged at the lower side of the fixed seat (7) and stirring blades (6) arranged on the windmill blades (5), the fluid outlet end (2) is provided with a removal part, and the removal part comprises an inner cylinder type adsorber (4) and a fixed frame (8) for fixing the inner cylinder type adsorber on the outer cylinder body (3). According to the invention, the entering fluid is spirally moved in the outer cylinder body (3) under the action of the stirring blades (6), and meanwhile, strong tornado-type fluid vortex is generated, so that particles are continuously converged towards the middle part of the outer cylinder body (3), and finally, the particles are converged on the particle inner cylinder type adsorber (4) at the central position of the pipeline, so that the purpose of removing the particles is achieved.
Description
Technical Field
The invention belongs to the technical field of dust removal equipment, and particularly relates to a passive particulate matter removal device of a supercritical system.
Background
Along with the development of the power industry in China, supercritical components have the most remarkable effects of saving energy and improving environment, and in a supercritical nuclear reactor, supercritical water coolant inevitably mixes with some journal particles. In the operation process of a reactor, the particles can erode components such as fuel rods, reactor internals and the like, so that the nuclear reactor is abnormal in operation, the nuclear power plant can be seriously shut down for maintenance, the safety and benefit of the nuclear power plant are jeopardized, the particles generated by scale and corrosion also exist in a supercritical boiler system, the supercritical working medium is directly led to a main turbine after being decompressed, so that the fine particles enter the main turbine along with the decompressed supercritical working medium, then the fine particles can erode the nozzles and blades of the main turbine to generate solid particles, the thermal efficiency of a turbine set is reduced, the availability of the set is reduced, the maintenance cost of the set is increased, and the harm relates to the economic and efficient operation of the whole power plant.
At present, common conventional dust removing equipment at home and abroad comprises an electric dust remover, a bag dust remover, an electrostatic particle layer dust remover, an electrostatic cyclone dust remover, an electric bag composite dust remover, a thermophoresis effect dust remover and the like, wherein all the dust remover equipment depends on an electric device, is too dependent on active equipment and has lower reliability, and is not easy to implement under supercritical water working medium, and the method for removing particles by using an inactive design in a supercritical system at present is not involved, so that the inactive and reliable dust remover is required to be increased by using an inactive component design, and the damage and corrosion of the particles to mechanical equipment and pipelines can be effectively reduced.
In order to overcome the problems, the inventor researches and improves the existing fine particulate removal technology to design a passive, efficient, reliable-running and simple-design removal device for the particulates in the supercritical stack.
Disclosure of Invention
In order to overcome the problems, the inventor has made intensive studies and has devised a passive particulate removal device for a supercritical system, which comprises a fixed seat, windmill blades arranged on the lower side of the fixed seat, and stirring blades arranged on the windmill blades, wherein the stirring blades are connected to the ends of the windmill blades; the fixed seat is connected with the surrounding outer cylinder body, the fixed seat is a triangular support frame, and the entering fluid is made to do spiral motion in the cylinder under the action of the stirring blade, and meanwhile strong tornado-type fluid vortex is generated, so that particles are continuously converged towards the middle of the cylinder body. And finally, converging the particles on a particle absorber at the central position of the pipeline, so as to achieve the purpose of removing the particles.
Specifically, the invention aims to provide a passive particulate removal device of a supercritical system, which comprises an outer cylinder, and a fluid inlet end and a fluid outlet end which are positioned at two ends of the outer cylinder.
The non-kinetic energy part comprises a fixed seat, a windmill blade arranged on the lower side of the fixed seat and a stirring blade arranged on the windmill blade, and preferably, the stirring blade is connected with the end part of the windmill blade;
preferably, the fixed seat is connected with the surrounding outer cylinder, preferably, the fixed seat is a triangular support frame,
more preferably, the number of the windmill blades is 2 to 5, preferably 3.
Wherein, windmill flabellum, fixing base and outer barrel coaxial arrangement.
Wherein, the fluid outlet end is provided with a removing part which comprises an inner cylinder type absorber and a fixing frame for fixing the absorber on the outer cylinder, the fixing frame is preferably a triangle supporting frame,
preferably, the cylindrical adsorber and the holder are arranged coaxially with the outer cylinder.
The inner absorption material of the inner barrel type absorber is a carbon sponge absorption layer, and preferably the carbon sponge absorption material consists of graphene and carbon nanotubes;
more preferably, the inner cylindrical adsorber is an upside down conical or cylindrical shape with an upper opening.
Wherein the height ratio of the outer cylinder body to the inner cylinder body is in the range of (3-30): 1, preferably (5-15): 1, and the diameter ratio of the outer cylinder body to the inner cylinder body is in the range of (2-15): 1, preferably (4-8): 1.
Wherein the fixing seat comprises a fixing rod and a bearing, a clamping groove is arranged at the inner side of the outer cylinder,
preferably, the fixing rod is matched with the outer cylinder body through a clamping groove, the fixing seat is connected with the windmill fan blade through a bearing,
preferably, the fixing rod is telescopic, and for this purpose, a locking buckle is arranged on the upper side of the fixing rod.
Wherein, the windmill blade and the stirring blade form an angle A, and the angle A is an acute angle, preferably 15-75 degrees, more preferably 30-60 degrees, for example 30-45 degrees.
Wherein the length of the stirring blade is 100 mm-300 mm, preferably 220mm.
The ratio of the blade width to the length of the windmill blade is in the range of (3-10): 1, preferably (5-8): 1, for example (6-7): 1.
Compared with the prior art, the invention has the beneficial effects that:
1) The inner cylinder type absorber enables the converged particles flowing forward along with the fluid to be deposited on the surface of the carbon sponge adsorption layer, so that damage and corrosion of the particles to mechanical equipment and pipelines can be effectively reduced;
2) The windmill blade drives the stirring blade to rotate while pushing the blade to rotate through the fluid, the rotation of the stirring blade enables the entering fluid to do spiral motion in the cylinder, and meanwhile strong tornado type air vortex is generated, so that the particle impurities in the fluid are concentrated at the central position of the cylinder body, and the particle impurities are collected and cleaned rapidly;
drawings
FIG. 1 is a schematic diagram of the inside of a passive particulate removal device for a supercritical system according to the present invention;
FIG. 2 is a schematic diagram of an passive part of a passive particulate matter removal device of a supercritical system according to the present invention;
FIG. 3 is a schematic view of the structure of a removal part in a passive particulate matter removal device of a supercritical system;
FIG. 4 is a schematic diagram of a non-kinetic section of a non-kinetic particulate matter removal device for a supercritical system according to the present invention;
FIG. 5 is a schematic diagram of a third passive component of a passive particulate removal device for a supercritical system according to the present invention.
Reference numerals in the drawings are as follows:
1-a fluid inlet end;
2-a fluid outlet end;
3-an outer cylinder;
4-an inner cylinder type absorber;
5-windmill blades;
6-stirring the leaves;
7-fixing seats;
701-fixing rod;
702-a clamping groove;
703-locking buckle;
704-a bearing;
8-fixing frames;
Detailed Description
The invention is further described in detail below by means of the figures and examples. The features and advantages of the present invention will become more apparent from the description.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The invention provides a passive particulate matter removing device of a supercritical system, which is shown in figure 1 and comprises an outer cylinder body 3, and a fluid inlet end 1 and a fluid outlet end 2 which are positioned at two ends of the outer cylinder body 3, and is characterized in that a passive energy part is arranged at the fluid inlet end 1, and supercritical working medium enters from the fluid inlet end passing through the outer cylinder body 3 and flows out from the fluid outlet end 2 of the outer cylinder body 3.
In a preferred embodiment, as shown in figure 1,
the non-kinetic energy portion includes fixing base 7 and sets up windmill blade 5 and the stirring leaf 6 of setting on windmill blade 5 at fixing base 7 downside, fixing base 7 is used for supporting and fixed windmill blade 5, and stirring leaf 6 is used for stirring supercritical working medium and makes helical motion and has produced strong tornado formula fluid vortex simultaneously, makes the particulate matter constantly assemble to the barrel middle part, is favorable to follow-up collecting the particulate matter.
According to the invention, the stirring blade 6 is preferably connected to the end of the windmill blade 5, the windmill blade 5 drives the stirring blade 6 to rotate while pushing the blade to rotate by fluid, the rotation of the stirring blade 6 causes the entering fluid to do spiral motion in the cylinder, and strong tornado-shaped air vortex is generated, so that the particle impurities in the fluid are concentrated in the central position of the cylinder, and the particle impurities are collected and cleaned rapidly.
Preferably, the fixing seat 7 is connected with the surrounding outer cylinder 3, and preferably, the fixing seat 7 is a triangular support frame.
More preferably, the number of the windmill blades is 2 to 5, preferably 3.
In a preferred embodiment, as shown in fig. 1 and 2, the windmill blades 5 and the fixing seat 7 are coaxially arranged with the outer cylinder 3, so that regular spiral movement of the fluid is ensured, and turbulence of the fluid during rotation is avoided.
The inventor finds that common conventional dust removing equipment at home and abroad comprises an electric dust remover, a bag dust remover, an electrostatic particle layer dust remover, an electrostatic cyclone dust remover, an electric bag composite dust remover, a thermophoresis effect dust remover and the like, and all the dust remover equipment depends on an electric device, is too dependent on active equipment, has lower reliability and is not easy to implement under supercritical water working medium.
Therefore, as shown in fig. 1, the fluid outlet end 2 is provided with a removal part, which comprises an inner cylinder type adsorber 4 and a fixing frame 8 for fixing the inner cylinder type adsorber on the outer cylinder 3, wherein the inner cylinder type adsorber 4 enables convergent particles flowing forward along with the fluid to be deposited on the surface of the carbon sponge adsorption layer, so that damage and corrosion of the mechanical equipment and pipelines caused by the particles can be effectively reduced.
According to the present invention, preferably, the fixing frame 8 is a triangle support frame, and the fixing frame 8 is used for supporting and fixing the inner cylinder type adsorber 4, so as to improve the stability of the inner cylinder type adsorber 4.
Preferably, the inner cylinder type absorber 4 and the fixing frame 8 are coaxially arranged with the outer cylinder body 3, the rotation of the windmill blades 5 drives the stirring blades 6 to rotate, the entering fluid is made to do spiral motion in the outer cylinder body 3 under the action of the stirring blades 6, meanwhile, strong tornado type fluid eddies are generated, the particles are enabled to be continuously converged towards the middle of the cylinder body, the converged particles can pass through the inner cylinder type absorber 4, and the particles are enabled to be deposited on the surface of the carbon sponge adsorption layer, so that the effective removal of the particles is completed.
In a preferred embodiment, as shown in fig. 1 and 3, the inner absorbent material of the inner cylindrical adsorber 4 is a "carbon sponge" absorbent layer, preferably, the "carbon sponge" absorbent material is composed of graphene and carbon nanotubes;
more preferably, the inner cylinder type absorber 4 is in an inverted conical shape or a cylindrical shape with an opening at the upper part, and provides a larger attachment area on the premise of not influencing water flow, thereby improving the impurity removal effect.
In a preferred embodiment, as shown in fig. 1, the ratio of the height of the outer cylinder 3 to the height of the inner cylinder adsorber 4 ranges from (3 to 30): 1, preferably from (5 to 15): 1, and the ratio of the diameter of the outer cylinder 3 to the diameter of the inner cylinder adsorber 4 ranges from (2 to 15): 1, preferably from (4 to 8): 1, whereby a more efficient rotation can be achieved.
In a preferred embodiment, as shown in fig. 1 and 4, the fixing base 7 includes a fixing rod 701 and a bearing 704, the inner side of the outer cylinder 3 is provided with a clamping groove 702,
preferably, the fixing rod 701 is matched with the outer cylinder 3 through a clamping groove 702, the fixing seat 7 is connected with the windmill blade 5 through a bearing 704,
preferably, the fixing rod 701 is telescopic, for this purpose, a locking buckle 703 is provided on the upper side of the fixing rod 701, and the fixing seat 7 is locked by adjusting the locking buckle 703, and at the same time, the disassembly and cleaning are convenient.
In a preferred embodiment, the windmill blade 5 and the stirring blade 6 form an angle a, which is an acute angle, preferably 15 to 75 °, more preferably 30 to 60 °, for example 30 to 45 °, as shown in fig. 5.
According to the invention, the fluid flow applies force to the front surface of the windmill blade 5 and is decomposed into two component forces, wherein the force in one direction is vertical to the fan surface, the force in the other direction pushes the blade to rotate, the rotation of the windmill blade 5 drives the stirring blade 6 to rotate, the entering fluid is spirally moved in the outer cylinder body 3 under the action of the stirring blade 6, meanwhile, strong tornado-shaped fluid vortex is generated, particles in the fluid can be continuously converged towards the middle part of the outer cylinder body 3 under the action of gravity and air vortex, and the converged particles can pass through the inner cylinder body type absorber 4 along with the forward flow of the fluid, so that more particles are adsorbed by the carbon sponge absorber, and the particles are deposited on the surface of the carbon sponge.
In a preferred embodiment, the stirring blade 6 has a length of 100mm to 300mm, preferably 220mm, as shown in fig. 1 and 2.
In a preferred embodiment, the ratio of blade width to length of the windmill blade 5 is in the range of (3-10): 1, preferably (5-8): 1, e.g., (6-7): 1, as shown in fig. 1 and 2.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
Claims (18)
1. The passive particulate matter removing device of the supercritical system comprises an outer cylinder body (3), and a fluid inlet end (1) and a fluid outlet end (2) which are positioned at two ends of the outer cylinder body (3), and is characterized in that a passive energy part is arranged at the fluid inlet end (1),
the non-kinetic energy part comprises a fixed seat (7), windmill blades (5) arranged on the lower side of the fixed seat (7) and stirring blades (6) arranged on the windmill blades (5), and the stirring blades (6) are connected to the end parts of the windmill blades (5);
the fixed seat (7) is connected with the surrounding outer cylinder body (3),
the number of the windmill blades (5) is 2 to 5,
the fluid outlet end (2) is provided with a removing part which comprises an inner cylinder type absorber (4) and a fixing frame (8) for fixing the absorber on the outer cylinder body (3),
the inner cylinder absorber (4) and the fixing frame (8) are coaxially arranged with the outer cylinder (3),
the height ratio of the outer cylinder (3) to the inner cylinder type absorber (4) is (3-30): 1, and the diameter ratio of the outer cylinder (3) to the inner cylinder type absorber (4) is (2-15): 1.
2. A passive particulate removal apparatus for a supercritical system as claimed in claim 1, wherein,
the fixed seat (7) and the fixed frame (8) are triangular support frames,
the number of the windmill blades (5) is 3.
3. The passive particulate matter removing device of a supercritical system according to claim 1, wherein the windmill blade (5), the fixing base (7) and the outer cylinder (3) are coaxially arranged.
4. The passive particulate matter removal device of a supercritical system as claimed in claim 1, wherein the inner absorbent material of the inner cylindrical adsorber (4) is a carbon sponge adsorption layer.
5. The passive particulate removal device of claim 4, wherein the carbon sponge absorbing material is comprised of graphene and carbon nanotubes.
6. The passive particulate matter removing apparatus of a supercritical system according to claim 5, wherein the inner cylindrical adsorber (4) has an inverted conical shape or a cylindrical shape with an upper opening.
7. The passive particulate matter removing device for a supercritical system according to claim 1, wherein the height ratio of the outer cylinder (3) to the inner cylinder type adsorber (4) is in the range of (5-15): 1, and the diameter ratio of the outer cylinder (3) to the inner cylinder type adsorber (4) is in the range of (4-8): 1.
8. A passive particulate removal apparatus for a supercritical system as claimed in any one of claims 1 to 7, wherein,
the fixing seat (7) comprises a fixing rod (701) and a bearing (704), and a clamping groove (702) is formed in the inner side of the outer cylinder body (3).
9. The passive particulate matter removing device of a supercritical system according to claim 8, wherein the fixing rod (701) is matched with the outer cylinder body (3) through a clamping groove (702), the fixing seat (7) is connected with the windmill blade (5) through a bearing (704),
the fixing rod (701) is telescopic, and for this purpose, a locking buckle (703) is arranged on the upper side of the fixing rod (701).
10. A supercritical system passive particulate removal apparatus according to any one of claims 1 to 7, wherein the windmill blades (5) form an angle a with the stirring blades (6), the angle a being an acute angle.
11. A supercritical system passive particulate removal apparatus according to claim 10 wherein angle a is 15 to 75 °.
12. A supercritical system passive particulate removal apparatus according to claim 11 wherein angle a is 30 to 60 °.
13. A supercritical system passive particulate removal apparatus according to claim 12 wherein angle a is between 30 ° and 45 °.
14. A supercritical system passive particulate removal apparatus according to any one of claims 1 to 7 wherein the length of the stirring blade (6) is from 100mm to 300mm.
15. A supercritical system passive particulate removal apparatus according to claim 14, wherein the length of the stirring blade (6) is 220mm.
16. A supercritical system passive particulate removal apparatus according to any one of claims 1 to 7, wherein the ratio of blade width to length of the windmill blade (5) is in the range of (3 to 10): 1.
17. The passive particulate matter removing apparatus of claim 16, wherein the ratio of the blade width to the length of the windmill blade (5) is in the range of (5-8): 1.
18. The passive particulate matter removing apparatus of a supercritical system according to claim 17, wherein the ratio of the blade width to the length of the windmill blade (5) is in the range of (6 to 7): 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810260458.9A CN108310888B (en) | 2018-03-27 | 2018-03-27 | Passive particulate matter removing device of supercritical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810260458.9A CN108310888B (en) | 2018-03-27 | 2018-03-27 | Passive particulate matter removing device of supercritical system |
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| CN108310888A CN108310888A (en) | 2018-07-24 |
| CN108310888B true CN108310888B (en) | 2023-11-24 |
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| CN110681218B (en) * | 2019-10-08 | 2020-09-01 | 新昌县云大农业有限公司 | Horizontal filter cartridge mechanism in environmental engineering waste gas purification equipment |
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