CN111986825A - Visual thermotechnical fluid experimental device for fuel rod bundle - Google Patents
Visual thermotechnical fluid experimental device for fuel rod bundle Download PDFInfo
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- CN111986825A CN111986825A CN202010855449.1A CN202010855449A CN111986825A CN 111986825 A CN111986825 A CN 111986825A CN 202010855449 A CN202010855449 A CN 202010855449A CN 111986825 A CN111986825 A CN 111986825A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/001—Mechanical simulators
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/02—Devices or arrangements for monitoring coolant or moderator
- G21C17/022—Devices or arrangements for monitoring coolant or moderator for monitoring liquid coolants or moderators
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
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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
- 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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- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
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- Testing Of Engines (AREA)
Abstract
The invention provides a visual thermal fluid experimental device for a fuel bundle fixed by a grid, which comprises an envelope fluid inlet section, a grid bundle section and a fluid outlet section. Wherein the fluid inlet section and the fluid outlet section are made of organic glass. The grid rod bundle section is composed of an organic glass rod, a fixed base, a positioning grid and a hexagonal outer sleeve, wherein the fixed base, the positioning grid and the hexagonal outer sleeve are located at the upper end and the lower end, the fixed base and the positioning grid are made of stainless steel, and the other fixed base and the positioning grid are made of organic glass. The invention can visually carry out experimental research on the distribution characteristic of the coolant flow field in the fuel assembly fixed by the spacer grid, and simultaneously carry out experimental research on the distribution characteristic of the pressure field in the fuel assembly fixed by the spacer grid through the pressure gauge interface arranged on the hexagonal outer sleeve, thereby providing support for the stirring and mixing mechanism research of the thermal fluid of the fuel assembly fixed by the grid.
Description
Technical Field
The invention relates to a fuel bundle experimental device, in particular to a visual thermotechnical fluid experimental device for a fuel bundle, and belongs to the field of nuclear reactors.
Background
In a nuclear reactor, a fuel assembly is a main component determining the safety and the thermal hydraulic characteristics of a reactor system, and the thermal hydraulic characteristics of the fuel assembly must be studied to facilitate the design of the reactor system based on the safety of the reactor system, the selection of the fuel assembly and the consideration of the design of the reactor system.
Particularly in the fuel assembly of the reactor system cooled by the liquid metal, the influence of the mixing action of the metal spacer grids and the flow characteristics of the coolant on the thermal safety of the fuel assembly needs to be further researched. According to the principle of fluid mechanics similarity, water can be used for carrying out similar simulation on liquid metal, so that the thermal fluid characteristics of the fuel assembly fixed by the metal positioning grid can be studied visually. However, it is necessary to provide a visual fuel bundle experimental apparatus to solve the above problems, so as to provide support for the hot fluid mixing mechanism research of the fuel assembly.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a visualized thermal fluid experimental apparatus for a fuel bundle, so as to provide necessary support for the research on the thermal fluid characteristics of a fuel assembly.
In order to achieve the purpose, the invention adopts the following technical scheme: a visual thermal fluid experimental apparatus for a fuel bundle, comprising: the fluid inlet section mainly comprises an inlet pipe seat and a flow equalizing sieve plate, the inlet pipe seat is of a transparent cylinder structure with an upper opening and a lower opening, and the flow equalizing sieve plate is arranged at the upper opening end of the inlet pipe seat; the rod bundle simulation section mainly comprises an outer sleeve and a grid rod bundle assembly, the outer sleeve is also of a transparent cylinder structure with an upper opening and a lower opening, and the lower opening end of the outer sleeve is fixedly connected with the upper opening end of the flow equalizing sieve plate; the grid bundle assembly is axially fixed inside the outer sleeve for simulating a fuel bundle; the fluid outlet section comprises an outlet pipe seat, the outlet pipe seat is of a cylinder structure with an open lower end and a closed upper end, the open lower end of the outlet pipe seat is fixedly connected with the open upper end of the outer sleeve, a fluid outlet pipe orifice is formed in at least one side wall of the outlet pipe seat, and an exhaust pipe orifice is formed in the closed upper end of the outlet pipe seat.
Preferably, the inlet tube seat is in a regular polygon right prism cylinder structure, the upper part of the internal flow passage of the cylinder is a fluid passage with equal sectional area, and the lower part of the internal flow passage of the cylinder is a fluid passage with gradually-increased sectional area from bottom to top.
The visual thermotechnical fluid experimental device is characterized in that the flow equalizing sieve plate is preferably a regular polygon thin plate, a plurality of equal-diameter sieve pores are uniformly formed in the flow equalizing sieve plate according to an equilateral triangle arrangement rule, a first clamping groove matched with the shape and size of the flow equalizing sieve plate is formed in the upper end of the inlet pipe seat, and the flow equalizing sieve plate is clamped into the first clamping groove in the upper end of the inlet pipe seat to form the fluid inlet section.
The visualized thermotechnical fluid experimental device preferably comprises two fixing bases, two groups of fuel rods and a spacer grid, wherein the two fixing bases are arranged at intervals along the axial direction of the rod bundle simulation segment, the spacer grid is arranged between the two fixing bases, the two groups of fuel rods are respectively connected between the two fixing bases and the spacer grid to form the grid bundle assembly, and the grid bundle assembly is axially installed inside the outer sleeve to form the rod bundle simulation segment.
In the visual thermal fluid experimental device, preferably, cylindrical bosses are respectively arranged at two ends of the fuel rod; the fixed base is a special-shaped component formed by a regular polygon frame and a plurality of cylinders, wherein one cylinder is positioned in the center of the regular polygon frame, the rest cylinders are uniformly distributed on the periphery of the central cylinder, one side of each peripheral cylinder is connected with the central cylinder, and the other side of each peripheral cylinder is connected with the regular polygon frame; and a first groove is formed in the end surface of one side, facing the spacer grid, of each cylinder, and the size of the first groove is matched with that of the cylindrical boss at the end part of the fuel rod.
Preferably, the spacer grid comprises a plurality of polygonal pipe fittings and a plurality of internal support cylinders, wherein one of the polygonal pipe fittings is located at a central position, and the rest polygonal pipe fittings are fixed on the periphery of the central polygonal pipe fitting; the inner support cylinders are respectively positioned in the polygonal pipe fittings, non-adjacent inner angles in each polygonal pipe fitting form inward-convex arc transition angles, and the inner sides of the polygonal pipe fittings are in fit contact with the outer peripheral surfaces of the inner support cylinders through the arc transition angles; and the upper end surface and the lower end surface of the inner support cylinder are respectively provided with a second groove matched with the cylindrical bosses at the two ends of the fuel rod, and the size of the second groove is matched with that of the cylindrical boss at the end part of the fuel rod.
Visual thermotechnical fluid experimental apparatus, preferably, the outer sleeve be with the regular polygon right prism barrel structure that entry tube socket cross sectional shape is the same, the inside fluid passage that is the cross sectional area of its barrel, just the upper end and the lower extreme of outer sleeve all opened with unable adjustment base's overall dimension matched with second draw-in groove, two unable adjustment base card respectively goes into in the second draw-in groove of outer sleeve upper end and lower extreme.
Preferably, at least one side wall of the outer sleeve is provided with a plurality of pressure gauge ports communicated with the inside of the outer sleeve, and each pressure gauge port is arranged symmetrically relative to the middle cross section of the outer sleeve in the vertical direction.
The visual thermotechnical fluid experimental device is characterized in that flanges are arranged at the upper end of the inlet pipe seat, the upper end and the lower end of the outer sleeve and the lower end of the outlet pipe seat, and the fluid inlet section, the rod bundle simulation section and the fluid outlet section are connected together through the flanges.
The visual thermal fluid experimental device is characterized in that the inlet pipe seat, the outer sleeve and the fuel rods are made of organic glass, and the flow equalizing sieve plate, the fixed base and the positioning grid are made of stainless steel.
Due to the adoption of the technical scheme, the invention has the following advantages: the visual thermotechnical fluid experimental device provided by the invention comprises a fluid inlet section, a rod bundle simulation section and a fluid outlet section, wherein the fluid inlet section and the rod bundle simulation section are made of transparent materials, the visual experimental study on the distribution characteristics of a coolant flow field in the fuel assembly can be carried out, meanwhile, the experimental study on the distribution characteristics of a pressure field in the fuel assembly is carried out through a pressure gauge interface arranged on an outer sleeve, and the support is provided for the study on the stirring mechanism of thermotechnical fluid of the fuel assembly.
Drawings
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is an exploded view of this embodiment of the invention;
FIGS. 3a and 3b are schematic views, in whole and in part, of a fluid inlet section according to this embodiment of the invention;
FIGS. 4 a-4 d are schematic diagrams of a bundle simulation block according to the present embodiment of the invention, partially and wholly cut away;
FIGS. 5a and 5b are schematic views, in whole and in part, of a fluid outlet block according to this embodiment of the invention;
FIG. 6 is a schematic structural view of a fuel rod according to this embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a fixing base according to the embodiment of the present invention;
fig. 8a and 8b are schematic structural views of a spacer grid according to the embodiment of the present invention;
fig. 9 is a schematic structural diagram of the flow equalizing sieve plate according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. Also in the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the scope of the present invention.
As shown in fig. 1 and 2, the visual thermotechnical fluid experimental device for the fuel bundle provided by the invention comprises:
the fluid inlet section 10 mainly comprises an inlet pipe seat 1-1 and a flow equalizing screen plate 1-2, wherein the inlet pipe seat 1-1 is of a transparent cylinder structure with an upper opening and a lower opening, and the flow equalizing screen plate 1-2 is arranged at the upper opening end of the inlet pipe seat 1-1 and is used for stirring fluid behind the fluid inlet section 10, so that the fluid can uniformly flow through the rod bundle simulation section 20.
The rod bundle simulation section 20 mainly comprises an outer sleeve 2-1 and a grid rod bundle assembly 2-2, wherein the outer sleeve 2-1 is also of a transparent cylinder structure with an upper opening and a lower opening, and the lower opening end of the outer sleeve is fixedly connected with the upper opening end of the flow equalizing sieve plate 1-2; the grid rod bundle assembly 2-2 is axially fixed inside the outer sleeve 2-1 and is used for simulating a fuel rod bundle of an actual reactor system;
the fluid outlet section 30 comprises an outlet pipe base 3-1, the outlet pipe base 3-1 is a cylindrical structure with an open lower end and a closed upper end, the open lower end of the outlet pipe base is fixedly connected with the open upper end of the outer sleeve 2-1, at least one side wall of the outlet pipe base 3-1 is provided with a fluid outlet pipe orifice 3-2, and the closed upper end of the outlet pipe base 3-1 is provided with an exhaust pipe orifice 3-3 (as shown in fig. 5a and 5 b).
In the above embodiment, preferably, as shown in fig. 2, fig. 3a and fig. 3b, the inlet pipe seat 1-1 is a regular polygonal right prism cylinder structure, the upper part of the cylinder inner flow passage is a fluid passage with an equal cross-sectional area, and the lower part of the cylinder inner flow passage is a fluid passage with a cross-sectional area gradually increasing from bottom to top. As shown in fig. 9, the flow equalizing sieve plate 1-2 is a regular polygonal thin plate, on which a plurality of sieve pores with equal diameters are uniformly arranged according to an equilateral triangle, the upper end of the inlet pipe seat 1-1 is provided with a first clamping groove matched with the shape and size of the flow equalizing sieve plate 1-2, and the flow equalizing sieve plate 1-2 is clamped into the first clamping groove at the upper end of the inlet pipe seat 1-1 to form a fluid inlet section 10.
In the above embodiment, preferably, as shown in fig. 2, 4a to 4d, the grid bundle assembly 2-2 includes 2 fixing bases 2-3, 14 fuel rods 2-4 (by way of example only, and not by way of limitation) and 1 spacer grid 2-5, the 2 fixing bases 2-3 being spaced along the axial direction of the bundle simulating section 20, the spacer grid 2-5 being disposed between the 2 fixing bases 2-3, the 14 fuel rods 2-4 being equally divided into two groups, which are respectively connected between the 2 fixing bases 2-3 and the spacer grid 2-5 to constitute the grid bundle assembly 2-2, and the grid bundle assembly 2-2 being axially installed inside the outer sleeve 2-1 to constitute the bundle simulating section 20.
In the above embodiment, preferably, as shown in fig. 6, both ends of the fuel rods 2 to 4 are respectively provided with cylindrical bosses. As shown in fig. 7, the fixed base 2-3 is a special-shaped member formed by 1 regular hexagonal frame and 7 cylinders, wherein 1 cylinder is located at the center of the regular hexagonal frame, the remaining 6 cylinders are uniformly distributed on the periphery of the central cylinder, and one side of each of the 6 peripheral cylinders is connected with the central cylinder, and the other side is connected with the regular hexagonal frame; the end surface of one side of each cylinder facing the spacer grids 2-5 is provided with a first groove, and the size of the first groove is matched with the size of the cylindrical boss at the end part of the fuel rod 2-4 so as to facilitate the insertion of the fuel rod 2-4. As shown in fig. 8, the spacer grid 2-5 includes 7 hexagonal tubes 2-51 and 7 inner support columns 2-52, wherein 1 hexagonal tube 2-51 is located at a central position and the remaining 6 hexagonal tubes 2-51 are fixed to the outer periphery of the central hexagonal tube 2-51; the 7 inner support cylinders 2-52 are respectively positioned in the 7 hexagonal pipe fittings 2-51, three inner corners of each hexagonal pipe fitting 2-51, which are not adjacent, form an arc transition angle protruding inwards, the inner sides of the hexagonal pipe fittings 2-51 are in fit contact with the outer peripheral surfaces of the inner support cylinders 2-52 through the three arc transition angles, the upper end surface and the lower end surface of each inner support cylinder 2-52 are respectively provided with a second groove matched with cylindrical bosses at two ends of the fuel rod 2-4, and the size of each second groove is matched with that of the cylindrical boss at the end of the fuel rod 2-4 so as to facilitate the insertion of the fuel rod 2-4.
In the above embodiment, preferably, the outer sleeve 2-1 is a regular polygonal right prism cylinder structure having the same cross-sectional shape as the inlet tube seat 1-1, the inside of the cylinder is a fluid passage with an equal cross-sectional area, the upper end and the lower end of the outer sleeve 2-1 are both provided with second clamping grooves matched with the external dimensions of the fixing bases 2-3, and the 2 fixing bases 2-3 are respectively clamped in the second clamping grooves at the upper end and the lower end of the outer sleeve 2-1.
In the above embodiment, preferably, at least one side wall of the outer sleeve 2-1 is provided with a plurality of pressure taps 2-6 communicated with the inside, and each pressure tap 2-6 is arranged symmetrically in the vertical direction relative to the middle cross section of the outer sleeve 2-1.
In the above embodiment, preferably, the upper end of the inlet socket 1-1, the upper end and the lower end of the outer sleeve 2-1 and the lower end of the outlet socket 3-1 are all provided with flanges, and the fluid inlet section 10, the rod bundle simulating section 20 and the fluid outlet section 30 are connected with each other through the flanges to form the whole visual thermal fluid experimental device.
In the above embodiment, preferably, the inlet pipe seat 1-1, the outer sleeve 2-1 and the fuel rod 2-4 are all made of organic glass, and the flow equalizing sieve plate 1-2, the fixed base 2-3 and the spacer grid 2-5 are all made of stainless steel.
When the invention is used for carrying out the research on the thermal fluid characteristics of the fuel assembly, experimental fluid (water, or other transparent media) firstly enters the experimental device through the inlet pipe seat 1-1, then is stirred and mixed through the flow equalizing sieve plate 1-2, then flows through the rod bundle simulating section 20 from bottom to top and enters the fluid outlet section 30, and finally flows out of the whole experimental device through the outlet pipe opening 3-2. In the whole experiment process, the exhaust pipe orifices 3-3 on the fluid outlet section 30 are used for exhausting gas in the experiment device, the distribution characteristics of the pressure field of the rod bundle simulation section 20 along the rod bundle are researched through the pressure gauge interfaces 2-6 on the outer sleeve 2-1, and because the outer sleeve 2-1 and the fuel rods 2-4 of the rod bundle simulation section 20 are made of organic glass materials, tracer particles can be mixed in the experiment fluid, so that an experimenter can visually research and analyze the flow field characteristics between the middle positioning grids 2-5 of the simulation rod bundle section 20 and the fuel rods 2-4 through naked eyes or a shooting device arranged outside the experiment device.
In the description of the present invention, it should be understood that the terms "first", "second", etc. are used to define the components, and are used only for the convenience of distinguishing the components, and if not otherwise stated, the terms have no special meaning, and thus, should not be construed as limiting the scope of the present invention.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A visual thermal fluid experimental apparatus for a fuel bundle, comprising:
the fluid inlet section (10) mainly comprises an inlet pipe seat (1-1) and a flow equalizing sieve plate (1-2), wherein the inlet pipe seat (1-1) is of a transparent cylinder structure with an upper opening and a lower opening, and the flow equalizing sieve plate (1-2) is arranged at the upper opening end of the inlet pipe seat (1-1);
the rod bundle simulation section (20) mainly comprises an outer sleeve (2-1) and a grid rod bundle assembly (2-2), wherein the outer sleeve (2-1) is also of a transparent cylinder structure with an upper opening and a lower opening, and the lower opening end of the outer sleeve is fixedly connected with the upper opening end of the flow equalizing sieve plate (1-2); the grid bundle assembly (2-2) is axially fixed inside the outer sleeve (2-1) for simulating a fuel bundle;
the fluid outlet section (30) comprises an outlet pipe seat (3-1), the outlet pipe seat (3-1) is of a cylinder structure with an open lower end and a closed upper end, the lower open end of the outlet pipe seat is fixedly connected with the upper open end of the outer sleeve (2-1), at least one side wall of the outlet pipe seat (3-1) is provided with a fluid outlet pipe orifice (3-2), and the upper closed end of the outlet pipe seat (3-1) is provided with an exhaust pipe orifice (3-3).
2. The visual thermal fluid experimental device according to claim 1, wherein the inlet pipe seat (1-1) is a regular polygon rectangular prism cylinder structure, the upper part of the internal flow passage of the cylinder is a fluid passage with an equal sectional area, and the lower part of the internal flow passage of the cylinder is a fluid passage with a sectional area gradually increased from bottom to top.
3. A visual thermal fluid experimental device according to claim 2, characterized in that the flow equalizing sieve plate (1-2) is a regular polygonal thin plate, on which a plurality of equal-diameter sieve pores are uniformly arranged according to an equilateral triangle arrangement rule, the upper end of the inlet tube seat (1-1) is provided with a first clamping groove matched with the external dimension of the flow equalizing sieve plate (1-2), and the flow equalizing sieve plate (1-2) is clamped into the first clamping groove at the upper end of the inlet tube seat (1-1) to form the fluid inlet section (10).
4. Visual thermal fluid experimental installation according to claim 2, characterized in that the grid bundle assembly (2-2) comprises two fixation bases (2-3), two groups of fuel rods (2-4) and one spacer grid (2-5), the two fixation bases (2-3) being arranged at intervals along the axial direction of the bundle simulating section (20), the spacer grids (2-5) are arranged between the two fixing bases (2-3), two groups of fuel rods (2-4) are respectively connected between the two fixing bases (2-3) and the spacer grids (2-5) to form the grid rod bundle assembly (2-2), and the grid bundle assembly (2-2) is axially mounted inside the outer sleeve (2-1) to constitute the bundle simulating section (20).
5. A visual thermal fluid experimental device according to claim 4, characterized in that both ends of the fuel rod (2-4) are respectively provided with a cylindrical boss;
the fixed base (2-3) is a special-shaped component formed by a regular polygon frame and a plurality of cylinders, wherein one cylinder is positioned at the center of the regular polygon frame, the rest cylinders are uniformly distributed on the periphery of the central cylinder, one side of each peripheral cylinder is connected with the central cylinder, and the other side of each peripheral cylinder is connected with the regular polygon frame; the end surface of one side of each cylinder facing the location grids (2-5) is provided with a first groove, and the size of the first groove is matched with the size of the cylindrical boss at the end part of the fuel rod (2-4).
6. Visual thermal fluid experimental apparatus according to claim 5, characterized in that said spacer grid (2-5) comprises a plurality of polygonal tubes (2-51) and a plurality of internal support cylinders (2-52), wherein one of said polygonal tubes (2-51) is located at a central position and the remaining polygonal tubes (2-51) are fixed at the periphery of the central polygonal tube (2-51); the inner support cylinders (2-52) are respectively positioned in the polygonal pipe fittings (2-51), the non-adjacent inner angles in each polygonal pipe fitting (2-51) form inward-convex arc transition angles, and the inner sides of the polygonal pipe fittings (2-51) are in fit contact with the outer peripheral surfaces of the inner support cylinders (2-52) through the arc transition angles; and the upper end surface and the lower end surface of the inner support column (2-52) are respectively provided with a second groove matched with the cylindrical bosses at the two ends of the fuel rod (2-4), and the size of the second groove is matched with that of the cylindrical bosses at the end part of the fuel rod (2-4).
7. A visual thermal fluid experimental device according to any one of claims 4 to 6, characterized in that the outer sleeve (2-1) is a regular polygonal right prism cylinder structure with the same cross-sectional shape as the inlet tube seat (1-1), a fluid channel with the same cross-sectional area is arranged inside the cylinder, the upper end and the lower end of the outer sleeve (2-1) are respectively provided with a second clamping groove matched with the external dimension of the fixed base (2-3), and the two fixed bases (2-3) are respectively clamped into the second clamping grooves at the upper end and the lower end of the outer sleeve (2-1).
8. A visual thermal fluid experimental device according to any one of claims 1 to 6, characterized in that a plurality of pressure gauge ports (2-6) communicated with the inside are arranged on at least one side wall of the outer sleeve (2-1), and each pressure gauge port (2-6) is arranged in a vertical direction and is symmetrical relative to the middle cross section of the outer sleeve (2-1).
9. A visual thermal fluid experimental apparatus according to any one of claims 1 to 6, characterized in that the upper end of the inlet socket (1-1), the upper end and the lower end of the outer sleeve (2-1) and the lower end of the outlet socket (3-1) are provided with flanges, and the fluid inlet section (10), the rod bundle simulating section (20) and the fluid outlet section (30) are connected with each other through the flanges.
10. A visual thermal fluid experimental device according to any one of claims 4 to 6, characterized in that the inlet pipe seat (1-1), the outer sleeve (2-1) and the fuel rod (2-4) are all made of organic glass, and the flow equalizing sieve plate (1-2), the fixed base (2-3) and the spacer grid (2-5) are all made of stainless steel.
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| CN202010855449.1A CN111986825B (en) | 2020-08-24 | 2020-08-24 | Visual thermotechnical fluid experimental device for fuel rod bundle |
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| CN202010855449.1A CN111986825B (en) | 2020-08-24 | 2020-08-24 | Visual thermotechnical fluid experimental device for fuel rod bundle |
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| CN111986825B CN111986825B (en) | 2022-07-19 |
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| CN113280867A (en) * | 2021-06-17 | 2021-08-20 | 上海交通大学 | Silk screen sensor assembly for measuring fluid parameters in prototype rod bundle channel |
| CN113280867B (en) * | 2021-06-17 | 2022-03-08 | 上海交通大学 | Silk screen sensor assembly for measuring fluid parameters in prototype rod bundle channel |
| CN114550955A (en) * | 2022-02-16 | 2022-05-27 | 中国核动力研究设计院 | Nuclear power reactor core thermal simulation device |
| CN115188509A (en) * | 2022-06-21 | 2022-10-14 | 西北核技术研究所 | Method for assembling rod bundle channel experimental section with small grid distance and rod diameter ratio and application thereof |
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| CN111986825B (en) | 2022-07-19 |
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