CN215183117U - Reactor core of ultra-high temperature gas cooled reactor - Google Patents
Reactor core of ultra-high temperature gas cooled reactor Download PDFInfo
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- CN215183117U CN215183117U CN202121605223.2U CN202121605223U CN215183117U CN 215183117 U CN215183117 U CN 215183117U CN 202121605223 U CN202121605223 U CN 202121605223U CN 215183117 U CN215183117 U CN 215183117U
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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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Abstract
The utility model discloses an ultra-temperature gas cooled reactor core, including the reactor core, the reactor core sets up to the cylindrical tank that has the toper bottom, reactor core bottom is equipped with the fuel discharge tube, the jar body upper portion of reactor core is equipped with loads the fill, load the indoor fixedly connected with baffle of fill, the plate body cross-section of baffle is established to trapezoidal, just the material pipe is thrown to the intercommunication in the both sides groove room that the baffle was cut apart has two sets of crisscross settings in the fill room. An object of the utility model is to provide an ultra-temperature gas cooled reactor core, with the design of reactor core charge-in system for two ball modes of advancing, realize that fuel element's buffering when reacing the ball bed slows down and double-circuit goal function, establish information feedback system, reacing the ball position and measurationing the purpose, guaranteed the effect of reactor core internal combustion element safe operation, adopt high temperature resistant corrugated metal pipe to realize the flow of coolant gas between reactor core shell and pressure vessel, simplify the structure and prolonged life.
Description
Technical Field
The utility model relates to an ultra-temperature gas cooled reactor core technical field specifically is ultra-temperature gas cooled reactor core.
Background
As a clean, safe and environment-friendly energy source, nuclear power generation has important significance for relieving the problems of energy safety and global climate change in the world and various countries. At present, the third-generation nuclear power technology is basically mature. In the fourth generation nuclear power system under development, the high temperature gas cooled reactor can achieve very high outlet temperature, has high power generation efficiency and high grade heat supply capacity, and attracts people to pay attention.
High temperature gas cooled reactors are classified into pebble bed reactors and columnar reactors according to the shape of the fuel element. The former presses the coated particle fuel and graphite base into fuel ball with diameter of 6 cm to form flowing ball bed reactor core, realizing on-line replacement of nuclear fuel without stopping reactor. In the latter, the coated granular fuel and graphite are pressed together into cylindrical pellets, which are then placed into hexagonal prismatic fuel assemblies to form a fixed prismatic core. The ball bed type high temperature gas cooled reactor has the following characteristics: 1. fuel elements are unloaded without stopping stacking, and the availability ratio of the power station is high; 2. the reactor core has small excess reactivity, is convenient for reactivity control, and has high neutron economy; 3. the unloading fuel consumption is uniform, the unloading fuel consumption is high, and the fuel utilization rate is high; 4. the temperature of the fuel particles is low during normal operation, and the outlet temperature of the reactor is easy to further increase. However, the existing pebble bed type high-temperature gas cooled reactor has a complex structure when the reactor core enters the sphere, the in-reactor sphere position information is difficult to monitor, and the service life is difficult to obtain higher guarantee. Therefore, the ultrahigh temperature gas cooled reactor core is provided to improve the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an ultra-high temperature gas cooled reactor core, design reactor core charge-in system for two ball modes, realize that fuel element's buffering when reacing the ball bed slows down and double-circuit goal function, establish information feedback system, reach the ball position and measure the purpose, the effect of reactor core in-core combustion element safe operation has been guaranteed, adopt high temperature resistant corrugated metal pipe to realize the flow of coolant gas between reactor core shell and pressure vessel, simplify the structure and prolonged life, with the problem of proposing in solving above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the reactor core of the ultra-high temperature gas cooled reactor comprises a reactor core, the reactor core is arranged into a cylindrical tank with a conical bottom, a fuel discharge pipe is arranged at the bottom of the reactor core, a filling hopper is arranged at the upper part of a tank body of the reactor core, a partition plate is fixedly connected in a hopper chamber of the filling hopper, the section of a plate body of the partition plate is trapezoidal, two groups of feeding guide pipes which are arranged in a staggered mode are connected in groove chambers at two sides of the partition plate in the hopper chamber, a pipe body of each group of feeding guide pipes is communicated in the reactor chamber of the reactor core in an inserting mode, a discharge pipe opening at the bottom of each group of feeding guide pipes is attached to the inner wall of the reactor chamber in an attaching mode, a measuring device is embedded in one side of the reactor core and comprises sphere position probes which are distributed at equal intervals, the signal end of each group of the sphere position probes is connected with an electrode lead, and the sphere position probes are electrically connected with a secondary indicating instrument through the electrode lead, and each group of the ball position probes is wound with an annular air tap on the part positioned in the reactor, and each group of the annular air taps is communicated with an air guide connecting pipe and a cold helium gas flow pipe by using the air guide connecting pipe.
Preferably, the feeding material in the reactor core is arranged as ceramic type coated particle fuel balls, and the pipe orifice of the feeding conduit is arranged as a circular pipe orifice in a matched manner.
Preferably, four groups of spherical position probes are arranged at least at equal intervals, and the probe at the bottommost part of the spherical position probe array group is set to be a zero position.
Preferably, an insulating sleeve is sleeved outside each group of the ball position probes, and the insulating sleeve is a ceramic sleeve.
Preferably, a plurality of groups of nozzles are arranged on the end face of one side of the annular air tap, which is close to the ball position probe, and the plurality of groups of nozzles are distributed in an annular array.
Preferably, the cold helium gas circulation pipe and the gas guide connecting pipe are both arranged to be metal corrugated pipes, the metal corrugated pipes are stainless steel pipes with the wall thickness of 1mm, the inner diameter of each metal corrugated pipe is 4-7m, the corrugated wave distance is 50-70mm, and the wave height is 60-80 mm.
Compared with the prior art, the beneficial effects of the utility model are that: .
1. The reactor core feeding system is designed into a double-ball-feeding mode, so that the buffering and speed-reducing and double-path ball-feeding functions of the fuel elements when reaching the ball bed are realized;
2. the ball position probe is designed to be matched with the secondary indicating instrument, the electrode contact type measuring mode can flexibly adapt to various measuring ranges and resolution requirements, the structure is simple, stable and reliable, the secondary indicating instrument can be used for directly displaying ball position information, a measuring circuit is obviously simplified, and the stability is improved; meanwhile, the annular air nozzle with the nozzle on the sphere position probe can realize helium gas flushing, dust accumulation is avoided, long-term stable operation of a measurement system is guaranteed, an information feedback system is built, the purpose of sphere position measurement is achieved, and the effect of safe operation of a combustion element in a reactor core is guaranteed;
3. the high-temperature resistant metal corrugated pipe is adopted to realize the flow of coolant gas between the reactor core shell and the pressure vessel, the structure is simplified, and the service life is prolonged.
Drawings
Fig. 1 is a schematic view of the internal structure of the present invention;
fig. 2 is a schematic view of the structure of the present invention;
fig. 3 is a schematic top view of the loading hopper of the present invention.
In the figure: 1. a reactor core; 2. a pile chamber; 3. a filling hopper; 4. a hopper chamber; 5. a partition plate; 6. a feeding conduit; 7. a ball position probe; 8. an insulating sleeve; 9. an electrode lead; 10. a secondary indicating instrument; 11. an annular air tap; 12. a nozzle; 13. a cold helium gas flow tube; 14. an air guide connecting pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the reactor core of the ultra-high temperature gas cooled reactor comprises a reactor core 1, wherein the reactor core 1 is set to be a cylindrical tank with a conical bottom, a fuel discharge pipe is arranged at the bottom of the reactor core 1, a filling hopper 3 is arranged at the upper part of a tank body of the reactor core 1, a partition plate 5 is fixedly connected in a hopper chamber 4 of the filling hopper 3, the section of a plate body of the partition plate 5 is trapezoidal, two groups of feeding guide pipes 6 which are arranged in a staggered mode are communicated in the two side groove chambers divided by the partition plate 5 in the hopper chamber 4, a pipe body of each group of feeding guide pipes 6 is communicated in the reactor chamber 2 of the reactor core 1 in an inserting mode, a bottom discharge pipe orifice of each group of feeding guide pipes 6 is attached to the inner wall of the reactor chamber 2, feeding materials in the reactor core 1 are set to be ceramic-type coated granular fuel balls, and pipe orifices of the feeding guide pipes 6 are matched and set to be circular pipe orifices; the filling hopper 3 is divided into the inner hopper chamber 4 by the partition plate 5, two groups of feeding guide pipes 6 which are arranged in a staggered mode are communicated in the hopper chamber 4 divided by the partition plate 5, the bottom pipe orifices of the feeding guide pipes 6 are attached to the inner wall of the reactor chamber 2 of the reactor core 1, the combustion balls are fed by the filling hopper 3, the combustion balls are divided into two sections by the partition plate 5 and correspondingly guided into the inner wall of the reactor chamber 2 through the inclined feeding guide pipes 6 and slide down, and the feeding system of the reactor core 1 is designed into a double-feeding ball mode in structural design, so that the buffering and speed reduction and the double-feeding ball function of the fuel balls when the fuel balls reach a ball bed are realized.
A measuring device is embedded and installed on one side of the reactor core 1 and comprises ball position probes 7 distributed at equal intervals, wherein at least four groups of the ball position probes 7 are arranged at equal intervals, and the probe at the bottommost part of an array group of the ball position probes 7 is set to be a zero position; an insulating sleeve 8 is sleeved outside each group of ball position probes 7 together, the insulating sleeve 8 is a ceramic sleeve, the signal end of each group of ball position probes 7 is connected with an electrode lead 9, and the ball position probes 7 are electrically connected with a secondary indicating instrument 10 through the electrode leads 9; designing a measuring device consisting of at least four groups of ball position probes 7, and taking the bottommost ball position probe 7 as a basic zero position to serve as a zero position probe so as to indicate the storage condition of fuel balls in the reactor core 1; the fuel ball is an electric conductor, if the fuel ball in the reactor core 1 is piled up to a certain height, the ball position probe 7 and the zero position probe at the position are simultaneously contacted with the fuel ball, because of the good electric conductivity of the fuel ball, the two probes can be regarded as an electrical short-circuit state and the circuit is conducted, a corresponding signal lamp on a console is lighted to display the corresponding fuel ball position in the reactor core 1, and an electrode lead 9 is used for bundling and leading out to a secondary indicating instrument 10, the secondary indicating instrument 10 adopts a known indicating instrument, and the connection of the ball position probe 7 can be displayed by the indicating lamp on an indicating instrument panel in the simplest way to display the corresponding fuel ball position in the reactor core 1; the ball position probe 7 is structurally designed and matched with the secondary indicating instrument 10, the electrode contact type measuring mode can flexibly adapt to various measuring ranges and the resolution requirement, the structure is simple, stable and reliable, the secondary indicating instrument 10 can be used for directly displaying the ball position information, the measuring circuit is obviously simplified, and the stability is improved.
An annular air tap 11 is wound on the part of each group of spherical position probes 7 in the pile chamber 2, wherein a plurality of groups of nozzles 12 are arranged on the end surface of one side of the annular air tap 11 close to the spherical position probes 7, the plurality of groups of nozzles 12 are distributed in an annular array, and each group of annular air taps 11 are communicated with an air guide connecting pipe 14 and communicated with a cold helium gas flow pipe 13 by using the air guide connecting pipe 14; the annular air nozzle 11 with the nozzle 12 on the ball position probe 7 can be used for realizing helium gas flushing, dust accumulation is avoided, long-term stable operation of a measuring system is guaranteed, an information feedback system is built, the aim of measuring the ball position is achieved, and the effect of safe operation of a combustion element in the reactor core 1 is guaranteed.
Wherein the cold helium gas circulation pipe 13 and the gas guide connecting pipe 14 are both arranged as metal corrugated pipes, the metal corrugated pipes are stainless steel pipes with the wall thickness of 1mm, the inner diameter of each metal corrugated pipe is 4-7m, the corrugated wave pitch is 50-70mm, and the wave height is 60-80 mm; the high-temperature resistant metal corrugated pipe is adopted to realize the flow of coolant gas between the reactor core shell and the pressure vessel, the structure is simplified, and the service life is prolonged.
The specific use description is as follows: the filling hopper 3 which is divided into an inner hopper chamber 4 by a partition plate 5 is adopted, two groups of feeding guide pipes 6 which are arranged in a staggered mode are communicated in the hopper chamber 4 divided by the partition plate 5, a pipe orifice at the bottom of each feeding guide pipe 6 is attached to the inner wall of a reactor chamber 2 of a reactor core 1, combustion balls are fed by the filling hopper 3, the combustion balls are divided into two sections by the partition plate 5 and are correspondingly guided into the inner wall of the reactor chamber 2 through the inclined feeding guide pipes 6 and slide down, and a feeding system of the reactor core 1 is designed into a double-ball feeding mode in structural design, so that the buffering and speed reduction and the double-path ball feeding functions of the fuel balls when reaching a ball bed are realized; designing a measuring device consisting of at least four groups of ball position probes 7 to be installed on the reactor core 1, and taking the position of the bottommost ball position probe 7 as a basic zero position to serve as a zero position probe so as to indicate the storage condition of fuel balls in the reactor core 1; the fuel ball is an electric conductor, if the fuel ball in the reactor core 1 is piled up to a certain height, the ball position probe 7 and the zero position probe at the position are simultaneously contacted with the fuel ball, because of the good electric conductivity of the fuel ball, the two probes can be regarded as an electrical short-circuit state and the circuit is conducted, a corresponding signal lamp on a console is lighted to display the corresponding fuel ball position in the reactor core 1, and an electrode lead 9 is used for bundling and leading out to a secondary indicating instrument 10, the secondary indicating instrument 10 adopts a known indicating instrument, and the connection of the ball position probe 7 can be displayed by the indicating lamp on an indicating instrument panel in the simplest way to display the corresponding fuel ball position in the reactor core 1; the structure is that the ball position probe 7 is designed and matched with the secondary indicating instrument 10, the electrode contact type measuring mode can flexibly adapt to various measuring ranges, the resolution ratio requirement is met, the structure is simple, stable and reliable, the secondary indicating instrument 10 can be used for directly displaying the ball position information, the measuring circuit is obviously simplified, the stability is improved, the annular air nozzle 11 with the nozzle 12 on the ball position probe 7 is designed and used for realizing helium gas flushing, dust accumulation is avoided, the long-term stable operation of the measuring system is ensured, the information feedback system is established, the aim of measuring the ball position is achieved, and the effect of safe operation of a combustion element in the reactor core 1 is ensured; the cold helium flow pipe 13 and the air guide connecting pipe 14 are both designed to be metal corrugated pipes, and the free flow of coolant gas between the reactor core shell and the pressure vessel can be realized by adopting the high-temperature resistant metal corrugated pipes, so that the structure is simplified, and the service life is prolonged.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. Ultra-high temperature gas cooled reactor core, including reactor core (1), reactor core (1) sets up to the cylindrical tank that has the toper bottom, reactor core (1) bottom is equipped with the fuel discharge pipe, its characterized in that: the reactor core (1) is characterized in that a filling hopper (3) is arranged at the upper part of a tank body of the reactor core (1), a partition plate (5) is fixedly connected in a hopper chamber (4) of the filling hopper (3), the cross section of a plate body of the partition plate (5) is trapezoidal, two groups of feeding guide pipes (6) which are arranged in a staggered mode are communicated in two side groove chambers divided by the partition plate (5) in the hopper chamber (4), a pipe body of each group of feeding guide pipes (6) is communicated in the reactor chamber (2) of the reactor core (1) in an inserting mode, a bottom discharging pipe opening of each group of feeding guide pipes (6) is attached to the inner wall of the reactor chamber (2), a measuring device is installed on one side of the reactor core (1) in an embedding mode and comprises ball position probes (7) which are distributed at equal intervals, the signal end of each group of the ball position probes (7) is connected with an electrode lead (9), and the ball position probes (7) are electrically connected with a secondary indicating instrument (10) through the electrode lead (9), and each group of the ball position probes (7) are arranged on the part in the pile chamber (2) and are respectively wound with an annular air tap (11), and each group of the annular air taps (11) are respectively communicated with an air guide connecting pipe (14) and a cold helium circulating pipe (13) by using the air guide connecting pipe (14).
2. The ultra-high temperature gas cooled reactor core of claim 1, wherein: the feeding in the reactor core (1) is ceramic-type coated particle fuel balls, and the pipeline opening of the feeding guide pipe (6) is matched with the feeding and is provided with a circular pipe opening.
3. The ultra-high temperature gas cooled reactor core of claim 2, wherein: the sphere position probes (7) are at least provided with four groups at equal intervals, and the probe at the bottommost part of the array group of the sphere position probes (7) is set to be a zero position.
4. The ultra-high temperature gas cooled reactor core of claim 3, wherein: and an insulating sleeve (8) is sleeved outside the ball position probe (7) of each group together, and the insulating sleeve (8) is a ceramic sleeve.
5. The ultra-high temperature gas cooled reactor core of claim 4, wherein: the annular air tap (11) is provided with a plurality of groups of nozzles (12) on the end surface of one side close to the ball position probe (7), and the nozzles (12) are distributed in an annular array.
6. The ultra-high temperature gas cooled reactor core of claim 5, wherein: the cold helium gas circulation pipe (13) and the gas guide connecting pipe (14) are both arranged to be metal corrugated pipes, the metal corrugated pipes are stainless steel pipes with the wall thickness of 1mm, the inner diameter of each metal corrugated pipe is 4-7m, the corrugated wave distance is 50-70mm, and the wave height is 60-80 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121605223.2U CN215183117U (en) | 2021-07-15 | 2021-07-15 | Reactor core of ultra-high temperature gas cooled reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121605223.2U CN215183117U (en) | 2021-07-15 | 2021-07-15 | Reactor core of ultra-high temperature gas cooled reactor |
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| CN215183117U true CN215183117U (en) | 2021-12-14 |
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| CN202121605223.2U Withdrawn - After Issue CN215183117U (en) | 2021-07-15 | 2021-07-15 | Reactor core of ultra-high temperature gas cooled reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114388158A (en) * | 2021-12-16 | 2022-04-22 | 华能核能技术研究院有限公司 | Modular high-temperature gas cooled reactor top fuel flattening model |
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2021
- 2021-07-15 CN CN202121605223.2U patent/CN215183117U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114388158A (en) * | 2021-12-16 | 2022-04-22 | 华能核能技术研究院有限公司 | Modular high-temperature gas cooled reactor top fuel flattening model |
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| AV01 | Patent right actively abandoned | ||
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Granted publication date: 20211214 Effective date of abandoning: 20220112 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20211214 Effective date of abandoning: 20220112 |