CN110732295B - Steam supply system - Google Patents

Steam supply system Download PDF

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Publication number
CN110732295B
CN110732295B CN201911116393.1A CN201911116393A CN110732295B CN 110732295 B CN110732295 B CN 110732295B CN 201911116393 A CN201911116393 A CN 201911116393A CN 110732295 B CN110732295 B CN 110732295B
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CN
China
Prior art keywords
steam supply
pipe
supply system
layer
annular isolation
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CN201911116393.1A
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Chinese (zh)
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CN110732295A (en
Inventor
陈林林
魏严凇
季松涛
史晓磊
张培升
刁均辉
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China Institute of Atomic of Energy
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China Institute of Atomic of Energy
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/0095—Preparation of aerosols
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/7179—Feed mechanisms characterised by the means for feeding the components to the mixer using sprayers, nozzles or jets
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/001—Mechanical simulators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/23—Mixing of laboratory samples e.g. in preparation of analysing or testing properties of materials
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Nozzles (AREA)

Abstract

The invention provides a steam supply system, which comprises a steam supply spray pipe and a scaling spray head, wherein the scaling spray head is arranged at the top of the steam supply spray pipe. The steam supply system is arranged in the aerosol experiment container, and the steam supply spray pipe is connected with a steam inlet pipe of the aerosol experiment container through a flange. The scaling spray head is a combination of a right circular table and an inverted circular table from bottom to top, and the superposition surface of the right circular table and the inverted circular table is parallel to the horizontal plane. The steam supply spray pipe is of a cylindrical structure, a plurality of layers of through pipes are arranged in the steam supply spray pipe, and an annular isolation layer is arranged between every two layers of through pipes. The technical scheme provided by the invention can improve the steam supply efficiency and ensure that the aerosol is dispersed more uniformly.

Description

Steam supply system
Technical Field
The invention belongs to the technical field of steam supply, and particularly relates to a steam supply system.
Background
In order to simulate the distribution of aerosols in a containment of a nuclear reactor under severe accident conditions, working conditions in the containment under accident conditions are studied, and it is necessary to generate upwards uniformly diffused steam in an aerosol experimental vessel so as to counter-flush the aerosols moving downwards.
The existing steam supply system is an external hole-shaped spherical nozzle, different steam supply spray pipes are required to be matched with different spherical nozzles, and the use is inconvenient. Meanwhile, the energy loss is generated at the joint of the hole-shaped spherical spray head and the steam supply spray pipe, so that the steam supply efficiency is reduced.
Accordingly, there is a need to devise an improved steam supply system that addresses the above-described shortcomings of the prior art.
Disclosure of Invention
The invention aims to design a steam supply system, so that the steam supply efficiency is improved, and aerosol dispersion is more uniform.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
A steam supply system comprises a steam supply spray pipe and a scaling spray head, wherein the scaling spray head is arranged at the top of the steam supply spray pipe, and the outermost side of the steam supply spray pipe is an outer wall. The top most part of the steam supply system is the top surface and the bottom most part is the bottom surface. The steam supply system is arranged in the aerosol experiment container, and the steam supply spray pipe is connected with a steam inlet pipe of the aerosol experiment container through a flange.
The scaling spray head is a combination of a right circular table and an inverted circular table from bottom to top, and the superposition surface of the right circular table and the inverted circular table is parallel to the horizontal plane.
The included angle of the buses on the same side of the two circular tables is 45-90 degrees. Preferably, the included angle is 60 °.
The steam supply nozzle is of cylindrical configuration. The steam supply spray pipe is internally provided with a plurality of layers of through pipes, the central shaft of each layer of through pipe is overlapped with the central shaft of the steam supply spray pipe, and each layer of through pipe vertically penetrates through the top surface and the bottom surface of the steam supply system.
An annular isolation layer is arranged between every two layers of through pipes, and each annular isolation layer is closely attached to the adjacent through pipe. The annular isolation layer penetrates the top surface and the bottom surface of the steam supply system up and down. The central axis of the annular isolation layer coincides with the central axis of the steam supply nozzle.
Except the outermost-layer through pipe and the innermost-layer through pipe, the difference between the inner diameter and the outer diameter of the bottoms of all the other through pipes is the same as the diameter of the innermost-layer through pipe. The difference between the inner diameter and the outer diameter of the bottom of the outmost layer of through pipe is twice the diameter of the outmost layer of through pipe.
The diameter of the steam supply nozzle is the same as the diameter of the steam inlet pipe. Steam enters the steam supply system through the steam inlet pipe, so that the steam is dispersed and distributed in the aerosol experiment container, and the downward moving aerosol is flushed, so that the aerosol is uniformly dispersed in the whole aerosol experiment container.
The thickness of the outer wall of the steam supply spray pipe is 1/20 of the diameter of the steam supply spray pipe. The thickness of the outer wall is unchanged no matter how many through pipes are provided. The outer wall is perpendicular to the bottom surface of the steam supply system.
The inner wall of the annular isolation layer is perpendicular to the bottom surface of the steam supply system. The outer wall of the annular isolation layer is not perpendicular to the bottom surface of the steam supply system, and the top of the outer wall of the annular isolation layer is inclined towards the wall surface direction of the aerosol experimental container. The included angle between the outer wall of the annular isolation layer and the bottom surface of the steam supply system is 80-90 degrees. Preferably, the included angle is 85 °.
The steam supply system is made of stainless steel.
The beneficial effects obtained by the invention are as follows:
1. The steam supply efficiency is improved, and the aerosol dispersion is more uniform;
2. The novel spray pipe is more suitable for an aerosol test platform than the traditional ball hole spray pipe;
3. The disassembly and assembly are convenient;
4. The specific outer diameter of the steam supply spray pipe is not set, only the proportion of each channel and the wall thickness to the total diameter is determined, the total diameter can be determined according to the specific design of the aerosol container, and the construction is more convenient and flexible.
Drawings
FIG. 1 is a front cross-sectional view of a first embodiment of a steam supply system;
FIG. 2 is a front cross-sectional view of a second embodiment of a steam supply system;
Fig. 3 is a schematic diagram of the connection between the vapor supply system and the aerosol experimental container.
In the figure: 1 is a steam supply nozzle; 2 is a zoom spray head; 21 is a first through pipe; 22 is a second through pipe; 23 is a third through pipe; 24 is the outer wall; 31 is a first annular isolation layer; 32 is a second annular isolation layer; 42. is an aerosol experimental container; 43 is a flange; 44 is a steam inlet pipe.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
As shown in fig. 1-3, the present invention provides a steam supply system comprising a steam supply nozzle 1 and a pantograph nozzle 2, the pantograph nozzle 2 being arranged on top of the steam supply nozzle 1, the outermost side of the steam supply nozzle 1 being an outer wall 24. The top most part of the steam supply system is the top surface and the bottom most part is the bottom surface. The steam supply system is arranged in an aerosol experiment container 42, and the steam supply nozzle 1 is connected with a steam inlet pipe 44 of the aerosol experiment container 42 through a flange 43.
The scaling spray head 2 is a combination of a right circular table and an inverted circular table from bottom to top, and the superposition surface of the right circular table and the inverted circular table is parallel to the horizontal plane.
The included angle of the buses on the same side of the two circular tables is 45-90 degrees. Preferably, the included angle is 60 °.
The steam supply nozzle 1 is of cylindrical structure. The steam supply spray pipe 1 is internally provided with a plurality of layers of through pipes, the central shaft of each layer of through pipe is coincident with the central shaft of the steam supply spray pipe 1, and each layer of through pipe vertically penetrates through the top surface and the bottom surface of the steam supply system.
An annular isolation layer is arranged between every two layers of through pipes, and each annular isolation layer is closely attached to the adjacent through pipe. The annular isolation layer penetrates the top surface and the bottom surface of the steam supply system up and down. The central axis of the annular isolation layer coincides with the central axis of the steam supply nozzle 1.
Except the outermost-layer through pipe and the innermost-layer through pipe, the difference between the inner diameter and the outer diameter of the bottoms of all the other through pipes is the same as the diameter of the innermost-layer through pipe. The difference between the inner diameter and the outer diameter of the bottom of the outmost layer of through pipe is twice the diameter of the outmost layer of through pipe.
The diameter of the steam supply nozzle 1 is the same as the diameter of the steam inlet pipe 44. Vapor enters the vapor supply system through vapor inlet tube 44 to diffuse and distribute the aerosol in aerosol experiment container 42, and the downward motion of the aerosol is counter-flushed to uniformly disperse the aerosol throughout aerosol experiment container 42.
The thickness of the outer wall 24 of the steam supply lance 1 is 1/20 of the diameter of the steam supply lance 1. The thickness of the outer wall 24 is constant regardless of the number of tubes. The outer wall 24 is perpendicular to the bottom surface of the steam supply system.
The inner wall of the annular isolation layer is perpendicular to the bottom surface of the steam supply system. The outer wall of the annular isolation layer is not perpendicular to the bottom surface of the steam supply system, and the top of the outer wall of the annular isolation layer is inclined towards the wall surface direction of the aerosol experiment container 42. The included angle between the outer wall of the annular isolation layer and the bottom surface of the steam supply system is 80-90 degrees. Preferably, the included angle is 85 °.
The steam supply system is made of stainless steel.
Embodiment one:
As shown in fig. 1, the steam supply nozzle 1 is internally provided with two layers of through pipes, namely a first through pipe 21 and a second through pipe 22 in sequence from inside to outside, and a first annular isolation layer 31 is arranged between the first through pipe 21 and the second through pipe 22.
Embodiment two:
As shown in fig. 2, the steam supply spray pipe 1 is internally provided with three layers of through pipes, namely a first through pipe 21, a second through pipe 22 and a third through pipe 23 from inside to outside. An annular isolating layer 31 is arranged between the first through pipe 21 and the second through pipe 22, and an annular isolating layer 32 is arranged between the second through pipe 22 and the third through pipe 23.

Claims (7)

1. A steam supply system, characterized by: the device comprises a steam supply spray pipe (1) and a scaling spray head (2), wherein the scaling spray head (2) is arranged at the top of the steam supply spray pipe (1), a combination of a right circular table and an inverted circular table is arranged from bottom to top, the superposition surface of the right circular table and the inverted circular table is parallel to a horizontal plane, and the included angle of a bus on the same side of the two circular tables is 45-90 degrees; the steam supply spray pipe (1) is of a cylindrical structure, the outermost side is an outer wall (24), a plurality of layers of through pipes are arranged in the steam supply spray pipe, the central axis of each layer of through pipe is coincident with the central axis of the steam supply spray pipe (1), and each layer of through pipe vertically penetrates through the top surface and the bottom surface of the steam supply system; an annular isolation layer is arranged between every two layers of through pipes, each annular isolation layer is tightly attached to the adjacent through pipe, the annular isolation layer vertically penetrates through the top surface and the bottom surface of the steam supply system, and the central axis of the annular isolation layer is coincident with the central axis of the steam supply spray pipe (1); the inner wall of the annular isolation layer is perpendicular to the bottom surface of the steam supply system, the outer wall of the annular isolation layer is not perpendicular to the bottom surface of the steam supply system, the top of the outer wall of the annular isolation layer is inclined towards the wall surface direction of the aerosol experiment container (42), and the included angle between the outer wall of the annular isolation layer and the bottom surface of the steam supply system is 80-90 degrees; the top most part of the steam supply system is a top surface and the bottom most part is a bottom surface, the steam supply system is arranged in an aerosol experiment container (42), the steam supply spray pipe (1) is connected with a steam inlet pipe (44) of the aerosol experiment container (42) through a flange (43), and the steam supply system is made of stainless steel.
2. The steam supply system of claim 1, wherein: except the outermost-layer through pipe and the innermost-layer through pipe, the difference between the inner diameter and the outer diameter of the bottoms of all the other through pipes is the same as the diameter of the innermost-layer through pipe; the difference between the inner diameter and the outer diameter of the bottom of the outmost layer of through pipe is twice the diameter of the outmost layer of through pipe.
3. The steam supply system of claim 1, wherein: the thickness of the outer wall (24) is 1/20 of the diameter of the steam supply spray pipe (1), and the outer wall (24) is perpendicular to the bottom surface of the steam supply system.
4. The steam supply system of claim 1, wherein: the diameter of the steam supply nozzle (1) is the same as the diameter of the steam inlet pipe (44).
5. The steam supply system of claim 1, wherein: the included angle between the outer wall of the annular isolation layer and the bottom surface of the steam supply system is 85 degrees.
6. The steam supply system of claim 1, wherein: the multi-layer through pipe is a two-layer through pipe, and an annular isolation layer is arranged between the two-layer through pipe.
7. The steam supply system of claim 1, wherein: the multi-layer through pipe is a three-layer through pipe, and an annular isolation layer is arranged between every two layers of through pipes.
CN201911116393.1A 2019-11-15 2019-11-15 Steam supply system Active CN110732295B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911116393.1A CN110732295B (en) 2019-11-15 2019-11-15 Steam supply system

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Application Number Priority Date Filing Date Title
CN201911116393.1A CN110732295B (en) 2019-11-15 2019-11-15 Steam supply system

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CN110732295B true CN110732295B (en) 2024-09-06

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211303007U (en) * 2019-11-15 2020-08-21 中国原子能科学研究院 Steam supply system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4983353A (en) * 1989-03-13 1991-01-08 General Electric Company Novel passive approach to protecting the primary containment barrier formed by the intermediate heat exchanger from the effects of an uncontrolled sodium water reaction
DE69221935T2 (en) * 1991-05-22 1998-04-09 Toshiba Kawasaki Kk Steam injector system
CN2272018Y (en) * 1996-11-22 1998-01-07 臧宝刚 Steam injector
CN201433944Y (en) * 2009-07-03 2010-03-31 大连汇能技术服务有限公司 Steam absorption pressure equalizer
CN108922639A (en) * 2018-06-27 2018-11-30 中广核研究院有限公司 Gas-liquid injector in npp safety shell

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN211303007U (en) * 2019-11-15 2020-08-21 中国原子能科学研究院 Steam supply system

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