CN217008659U - Heat transfer test system of pool type liquid metal reactor - Google Patents
Heat transfer test system of pool type liquid metal reactor Download PDFInfo
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- CN217008659U CN217008659U CN202123301018.XU CN202123301018U CN217008659U CN 217008659 U CN217008659 U CN 217008659U CN 202123301018 U CN202123301018 U CN 202123301018U CN 217008659 U CN217008659 U CN 217008659U
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Abstract
The utility model discloses a heat transfer test system of a pool type liquid metal reactor, belongs to the field of reactor thermal hydraulics, and solves the problem that the heat transfer test cost of a pool type liquid metal reactor adopting a real object in the prior art is very high. The heat transfer test system comprises a shell with an opening at the top, a top cover arranged at the opening of the shell and an inert gas loader with adjustable gas supply pressure; the inner space formed by the shell and the top cover is divided into a liquid metal accommodating space and an inert gas accommodating space positioned above the liquid metal accommodating space; the inert gas loader is communicated with the inert gas accommodating space; the diameter of the shell is 2.5-3.5 m, and the height is 1.8-2.0 m. The heat transfer test system can be used for heat transfer tests of pool type liquid metal reactors.
Description
Technical Field
The utility model belongs to the field of reactor thermal hydraulics, and particularly relates to a heat transfer test system of a pool type liquid metal reactor.
Background
The liquid metal reactor is a main reactor type for developing the fourth generation reactor in China due to higher safety and economy.
In the design and construction of a nuclear reactor, temperature loads of the reactor under different working conditions must be obtained to serve as input conditions of thermal stress calculation, whether structures and components in the reactor can meet structural integrity under the design working conditions is judged, and the operation safety of the reactor is ensured.
However, the pool-type liquid metal reactor has a complex structure, a large volume and high cost, so that the cost for carrying out a heat transfer test by adopting a physical pool-type liquid metal reactor is very high.
SUMMERY OF THE UTILITY MODEL
In view of the above analysis, the present invention aims to provide a heat transfer test system for a pool-type liquid metal reactor, which solves the problem that the heat transfer test using a physical pool-type liquid metal reactor in the prior art is very expensive.
The purpose of the utility model is mainly realized by the following technical scheme:
the utility model provides a heat transfer test system of a pool type liquid metal reactor, which comprises: the device comprises a shell with an opening at the top, a top cover arranged at the opening of the shell and an inert gas loader with adjustable gas supply pressure; the inner space formed by the shell and the top cover is divided into a liquid metal accommodating space and an inert gas accommodating space positioned above the liquid metal accommodating space; the inert gas loader is communicated with the inert gas accommodating space; the diameter of the shell is 2.5-3.5 m, and the height is 1.8-2.0 m.
Further, the liquid metal in the liquid metal accommodating space is liquid metal sodium.
Further, the top cover is a conical top cover.
Further, the inert gas in the inert gas containing space is argon.
Further, the diameter of the housing is 3m, and the height thereof is 1.95 m.
Further, the heat transfer test system of the pool type liquid metal reactor is implemented by taking a real pool type liquid metal reactor as a reference 1: a scaling of 8 to 10.
Further, the heat transfer test system of the pool type liquid metal reactor further comprises a liquid level temperature heat flux density measuring instrument arranged at the liquid level of the liquid metal in the liquid metal accommodating space.
Further, the heat transfer test system of the pool type liquid metal reactor further comprises a convection heat flow density measuring instrument arranged on the inner surface of the top cover, a radiation heat flow density measuring instrument arranged inside the top cover and/or a gas heat flow density measuring instrument arranged inside the inert gas containing space.
Further, the heat transfer test system of the pool type liquid metal reactor further comprises at least two penetrating support pieces, one ends of the penetrating support pieces are fixedly connected with the bottom of the shell, and the other ends of the penetrating support pieces penetrate through the cooling air pipe and are fixedly connected with the side wall of the cooling air pipe through connecting pipes, so that the top cover is fixedly connected with the penetrating support pieces through the connecting pipes.
Furthermore, the heat transfer test system of the pool type liquid metal reactor also comprises a cooling air pipe which is arranged at the top end of the penetrating support.
Further, the heat transfer test system of the pool type liquid metal reactor further comprises a cooling air heat flux density measuring instrument arranged at the cooling air pipe.
Further, a gas gap is formed between the connecting pipe and the penetrating support, and gas is filled in the gas gap.
Furthermore, the heat transfer test system of the pool type liquid metal reactor also comprises a heat preservation member sleeved on the outer wall of the penetrating support member.
Furthermore, an opening is formed in the top of the top cover, and a rotary shielding plug and a plug cock protecting sleeve sleeved on the outer wall of the rotary shielding plug are arranged at the opening in the top of the top cover.
Furthermore, an air gap is formed between the rotary shielding plug and the plug protective sleeve, and air is filled in the air gap.
Furthermore, the outer surface of the top cover is provided with a heat insulation layer.
Compared with the prior art, the utility model can realize at least one of the following beneficial effects:
a) the heat transfer test system of the pool type liquid metal reactor provided by the utility model reserves the main heat transfer main body of the physical pool type liquid metal reactor, effectively simplifies the structure of the inert gas accommodating space at the top of the main container of the pool type liquid metal reactor, reduces the volume of the physical pool type liquid metal reactor, can perform heat transfer test on the pool type liquid metal reactor, and has the advantages of simple structure, low cost and strong operability.
b) According to the heat transfer test system of the pool type liquid metal reactor, the liquid metal liquid level is used as the hot end, the cooling air pipe is used as the cold end for heat transfer, the temperature of the liquid metal liquid level and the heat flow density of the cooling air pipe are monitored in real time, so that the liquid metal liquid level and the cooling air pipe are close to the actual temperature and the heat flow density of the physical pool type liquid metal reactor, the boundary conditions of the heat transfer process (from the hot end to the cold end) are guaranteed to be consistent, the heat transfer in the heat transfer test equipment can be enabled to be close to the heat transfer in the physical pool type liquid reactor, the boundary conditions of the hot end at the bottom and the cold end are guaranteed to be consistent, and the simulation authenticity of the heat transfer test equipment is improved.
c) According to the heat transfer test system of the pool type liquid metal reactor, provided by the utility model, through the arrangement of the convection heat flow density measuring instrument, the radiation heat flow density measuring instrument and/or the gas heat flow density measuring instrument, the heat flow density between the inert gas and the top cover, the heat flow density between the liquid metal liquid level and the top cover and the heat flow density inside the top cover can be monitored in real time, so that the three can be close to the heat transfer in the heat transfer test equipment.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are for purposes of illustrating particular embodiments and are not to be construed as limiting the utility model, wherein like reference numerals are used to designate like parts throughout.
Fig. 1 is a schematic structural diagram of a heat transfer testing system of a pool-type liquid metal reactor according to an embodiment of the present invention.
Reference numerals:
1-liquid metal containing space; 2-inert gas containing space; 3-a through support; 4-heat preservation pieces; 5-a top cover; 6-insulating layer; 7-connecting pipe; 8-cooling the air pipe; 9-rotating the shield plug; 10-cock protective sheath.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the utility model serve to explain the principles of the utility model.
Example one
The present embodiment provides a heat transfer test system for a pool-type liquid metal reactor, referring to fig. 1, including: the device comprises a shell with an opening at the top, a top cover (for example, a conical top cover) arranged at the opening of the shell, a cooling air pipe arranged on the top cover, and an inert gas (for example, argon) loader with adjustable gas supply pressure; the inner space formed by the shell and the top cover is divided into a liquid metal accommodating space 1 and an inert gas accommodating space 2 positioned above the liquid metal accommodating space 1; the inert gas loader is communicated with the inert gas accommodating space 2; the housing has a diameter of 2.5 to 3.5m (e.g., 3m) and a height of 1.8 to 2.0m (e.g., 1.95 m).
In the heat transfer of pond formula liquid metal reactor, with main container top inert gas accommodation space 2's heat transfer characteristic most complicated, compared with the prior art, the heat transfer test system of pond formula liquid metal reactor that this embodiment provided, keep the main heat transfer main part of pond formula liquid metal reactor, the structure to pond formula liquid metal reactor main container's top inert gas accommodation space 2 effectively simplifies, reduce the volume of pond formula liquid metal reactor, thereby can carry out the heat transfer test to pond formula liquid metal reactor, moreover, the steam generator is simple in structure, low cost, and maneuverability is strong.
It should be noted that, the heat transfer test system of the pool-type liquid metal reactor may be performed based on a real pool-type liquid metal reactor by: a scaling ratio of 8 to 10.
Considering that the temperature of the liquid metal level in the liquid metal accommodating space 1 affects the heat transfer in the heat transfer test equipment, in order to enable the heat transfer in the heat transfer test equipment to approach the heat transfer in the tank-type liquid reactor, the temperature of the liquid metal level in the liquid metal accommodating space 1 needs to be monitored in real time, and therefore, the heat transfer test system of the tank-type liquid reactor further comprises a level temperature and heat flow density measuring instrument arranged at the liquid metal level in the liquid metal accommodating space 1. The liquid metal level is used as a hot end, the temperature of the liquid metal level is monitored in real time, the liquid metal level and the temperature are close to the actual temperature of the physical cell type liquid metal reactor, the boundary conditions of the heat transfer process (from the hot end to the cold end) are guaranteed to be consistent, the heat transfer in the heat transfer test equipment can be close to the heat transfer in the physical cell type liquid metal reactor, the boundary conditions of the hot end at the bottom are guaranteed to be consistent, and the simulation authenticity of the heat transfer test equipment is improved.
It should be noted that, in addition to the temperature of the liquid metal level, the convective heat transfer between the inert gas 2 and the top cover 5, the thermal radiation between the liquid metal level and the top cover 5, and the heat transfer in the top cover 5 also affect the heat transfer in the heat transfer testing apparatus, so the heat transfer testing system of the pool-type liquid metal reactor further includes a convective heat flow density measuring instrument disposed on the inner surface of the top cover 5, a radiant heat flow density measuring instrument disposed inside the top cover 5, and/or a gas heat flow density measuring instrument disposed inside the inert gas accommodating space 2, so that the heat flow density between the inert gas and the top cover 5, the heat flow density between the liquid metal level and the top cover 5, and the heat flow density inside the top cover 5 can be monitored in real time through the arrangement of the convective heat flow density measuring instrument, the radiant heat flow density measuring instrument, and/or the gas heat flow density measuring instrument, enabling the three to approach heat transfer within the heat transfer test apparatus.
It will be appreciated that the heat transfer test system for a pool type liquid metal reactor described above further comprises at least two through-going supports 3 in order to enable support between the shell and the head cover 5, the head cover 5 being fixedly connected to the through-going supports 3 by means of nipples 7.
In order to cool the penetrating support 3, the heat transfer testing system of the pool-type liquid metal reactor further comprises a cooling air pipe 8 arranged at the top end of the penetrating support 3.
Considering that the heat flux density of the cooling air pipe 8 affects the heat transfer in the heat transfer test equipment, in order to enable the heat transfer in the heat transfer test equipment to be close to the heat transfer in the tank-type liquid metal reactor, the heat flux density of the cooling air pipe 8 needs to be monitored in real time, and therefore, the heat transfer test system of the tank-type liquid metal reactor further comprises a cooling air heat flux density measuring instrument arranged at the cooling air pipe 8. Wherein, cooling air pipe 8 conducts heat as the cold junction, through the thermal current density of real-time supervision cooling air pipe 8 department for both are close to the thermal current density of matter pool type liquid metal reactor, guarantee that the boundary condition of heat transfer process (hot junction to cold junction) is unanimous, thereby can make the heat transfer in the above-mentioned heat transfer test equipment close to the heat transfer in the matter pool type liquid metal reactor, guarantee that cold junction boundary condition is unanimous, improve the simulation authenticity of above-mentioned heat transfer test equipment.
In order to avoid the extrusion between the adapter tube 7 and the through support 3 caused by thermal expansion and contraction, an air gap is arranged between the adapter tube 7 and the through support 3, and the air gap is filled with air. Through the setting of this gas gap, can avoid expend with heat and contract with cold on the one hand to lead to taking over 7 and running through and cause the extrusion between the support 3, on the other hand, can also reduce the machining error and lead to taking over 7 and running through the unable condition emergence of assembling of support 3.
In order to reduce the influence of the penetrating support 3 on the space in the shell and the top cover 5, the heat transfer test system of the pool type liquid metal reactor further comprises a heat preservation member 4 sleeved on the outer wall of the penetrating support 3, the penetrating support 3 can be isolated from the space in the top cover 5 through the heat preservation member 4, and the influence of the penetrating support 3 on the space in the shell and the top cover 5 is reduced.
It will also be understood that the top of the top cover 5 is provided with an opening, and the opening at the top of the top cover 5 is provided with a rotary screen plug 9 and a plug protecting sleeve 10 which is sleeved on the outer wall of the rotary screen plug 9.
In order to avoid the compression between the rotary screen plug 9 and the plug protection sleeve 10 caused by the expansion and contraction of heat, an air gap is arranged between the rotary screen plug 9 and the plug protection sleeve 10, and the air gap is filled with air. Through the setting of this gas gap, can avoid on the one hand expend with heat and contract with cold to lead to causing the extrusion between rotatory shielding plug 9 and the cock protective sheath 10, on the other hand, can also reduce machining error and lead to the condition emergence of the unable assembly of rotatory shielding plug 9 and cock protective sheath 10.
In order to reduce the heat dissipation of the outer surface of the top cover 5, the outer surface of the top cover 5 is provided with a heat preservation layer 6, and the heat preservation layer 6 is made of heat preservation materials.
The above description is a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention.
Claims (10)
1. A heat transfer test system of a pool type liquid metal reactor is characterized by comprising a shell with an opening at the top, a top cover arranged at the opening of the shell and an inert gas loader with adjustable gas supply pressure;
the inner space formed by the shell and the top cover is divided into a liquid metal accommodating space and an inert gas accommodating space positioned above the liquid metal accommodating space;
the inert gas loader is communicated with the inert gas accommodating space;
the diameter of the shell is 2.5-3.5 m, and the height is 1.8-2.0 m.
2. The pool liquid metal reactor heat transfer test system of claim 1, wherein the shell has a diameter of 3m and a height of 1.95 m.
3. The pool-type liquid metal reactor heat transfer test system of claim 1, further comprising a level temperature heat flux density meter disposed at a level of liquid metal in the liquid metal containment space.
4. The heat transfer testing system of the pool-type liquid metal reactor of claim 1, further comprising a convection heat flow density measuring instrument disposed on an inner surface of the top cover, a radiant heat flow density measuring instrument disposed inside the top cover, and/or a gas heat flow density measuring instrument disposed inside the inert gas containing space.
5. The pool liquid metal reactor heat transfer test system of claim 1, further comprising at least two through-going supports, wherein the top cap is fixedly attached to the through-going supports.
6. The pool liquid metal reactor heat transfer test system of claim 5, wherein the head cover is fixedly connected to the through support by a nipple.
7. The pool liquid metal reactor heat transfer test system of claim 6, wherein there is a gas gap between the nozzle and the through support.
8. The pool-type liquid metal reactor heat transfer test system of claim 5, further comprising a thermal insulation member sleeved on an outer wall of the support member.
9. The heat transfer test system of the pool type liquid metal reactor as claimed in claim 1, wherein an opening is formed at the top of the top cover, a rotary shielding plug and a plug protecting sleeve sleeved on the outer wall of the rotary shielding plug are arranged at the opening at the top of the top cover.
10. The pool liquid metal reactor heat transfer test system of claim 9, wherein there is a gas gap between the rotating shield plug and the plug shroud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123301018.XU CN217008659U (en) | 2021-12-24 | 2021-12-24 | Heat transfer test system of pool type liquid metal reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123301018.XU CN217008659U (en) | 2021-12-24 | 2021-12-24 | Heat transfer test system of pool type liquid metal reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217008659U true CN217008659U (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123301018.XU Active CN217008659U (en) | 2021-12-24 | 2021-12-24 | Heat transfer test system of pool type liquid metal reactor |
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| Country | Link |
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| CN (1) | CN217008659U (en) |
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2021
- 2021-12-24 CN CN202123301018.XU patent/CN217008659U/en active Active
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