CN114005560B - Ball stop device falls in high temperature gas cooled reactor absorption ball and ball bed formula high temperature gas cooled reactor - Google Patents
Ball stop device falls in high temperature gas cooled reactor absorption ball and ball bed formula high temperature gas cooled reactor Download PDFInfo
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- CN114005560B CN114005560B CN202111237582.1A CN202111237582A CN114005560B CN 114005560 B CN114005560 B CN 114005560B CN 202111237582 A CN202111237582 A CN 202111237582A CN 114005560 B CN114005560 B CN 114005560B
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- gas cooled
- temperature gas
- cooled reactor
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/20—Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel
- G21C19/202—Arrangements for handling ball-form, i.e. pebble fuel
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/02—Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; Control elements having arrangements activated in an emergency
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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
Abstract
The invention relates to the technical field of high-temperature gas cooled reactors, in particular to a high-temperature gas cooled reactor absorption ball falling limiting device and a ball bed type high-temperature gas cooled reactor. Ball stop device falls in high temperature gas cooled reactor absorption ball includes: the installation components are at least provided with two installation components, the axes of the installation components are mutually overlapped, and the installation components are detachably connected; the elastic buffer piece is arranged between two adjacent installation assemblies and is coaxially arranged with the installation assemblies; the movable electrode is arranged on two installation components at two ends, and one surface of the installation component provided with the movable electrode is away from the elastic buffer piece. The movable switch is buried in the mounting assembly through signals of starting feeding and stopping feeding, the movable switch is mounted on the mounting assembly, high-temperature, high-pressure and strong radiation can be better tolerated, the service life of the movable switch is far longer than that of the travel switch, the problem of inconvenience in replacement of the travel switch is solved, and the risk of radiation leakage during replacement of the travel switch is avoided.
Description
Technical Field
The invention relates to the technical field of high-temperature gas cooled reactors, in particular to a high-temperature gas cooled reactor absorption ball falling limiting device and a ball bed type high-temperature gas cooled reactor.
Background
The pebble-bed high-temperature gas cooled reactor is an advanced nuclear reactor with good inherent safety, can be used for high-efficiency power generation and high-temperature heat supply, and is one of the first-choice reactor types in the fourth generation nuclear energy system in the international nuclear energy field. The reactor reactivity control system adopts a mode of lifting and inserting the falling ball pipe to realize falling of the absorption ball, and can achieve a shutdown working condition with lower temperature.
The high-temperature gas cooled reactor absorption ball falling device adopts a screw nut to drive a ball falling pipe to lift or insert downwards, a travel switch is arranged on the upper limit and the lower limit of the ball falling pipe to realize the travel alarm of the ball falling pipe, and a driving electrode is interlocked to realize the limit function. Because the high-temperature gas cooled reactor core has high temperature, high pressure and large radiation dosage, and the travel switch does not bear high pressure, the travel switch has short service life and high failure rate, and the replacement process is complex once the failure occurs, and the risk is high.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect of higher failure rate of a travel switch in an absorption ball shutdown device of a high-temperature gas cooled reactor in the prior art, thereby providing a high-temperature gas cooled reactor absorption ball falling limiting device and a ball bed type high-temperature gas cooled reactor.
In order to solve the technical problems, the invention provides a high-temperature gas cooled reactor absorption ball falling limiting device, comprising:
the installation components are at least provided with two installation components, the axes of the installation components are mutually overlapped, and the installation components are detachably connected;
the elastic buffer piece is arranged between two adjacent installation assemblies and is coaxially arranged with the installation assemblies;
the movable electrode is arranged on two installation components at two ends, and one surface of the installation component provided with the movable electrode is away from the elastic buffer piece.
Optionally, the mounting assembly comprises an insulating sleeve and a positioning sleeve sleeved outside the insulating sleeve, and the movable electrode is mounted on the insulating sleeve.
Optionally, the elastic buffer is arranged between adjacent insulating sleeves, and an adjusting backing plate is arranged between adjacent positioning sleeves.
Optionally, the outer side surface of the insulating sleeve is provided with a positioning groove along the circumferential direction, the inner side surface of the positioning sleeve is provided with a positioning block along the axial direction, and the positioning block is matched and abutted with the positioning groove.
Optionally, a plurality of connecting grooves are axially spaced on the mounting assembly, and fasteners are installed in the connecting grooves to connect adjacent mounting assemblies to each other.
Optionally, a mounting groove is provided on the mounting assembly, the movable electrode is mounted in the mounting groove, and the movable electrode portion extends out of the mounting groove.
Optionally, the movable electrode comprises an electrode body and a pressing elastic piece, the electrode body is slidably mounted in the mounting groove, one end of the pressing elastic piece is connected with the electrode body, and the other end of the pressing elastic piece is connected with the mounting groove.
Optionally, the movable electrode further comprises a lock nut, the movable electrode is fixedly installed at the outlet of the installation groove, a positioning protrusion is arranged on the side face of the electrode body along the circumferential direction, the electrode body penetrates through the lock nut, and the positioning protrusion is in butt fit with the lock nut.
Optionally, the elastic buffer member is a compression washer, and the compression washer is provided with a wavy bulge structure.
The invention also provides a pebble-bed high-temperature gas cooled reactor, which is provided with the high-temperature gas cooled reactor absorption ball falling limiting device.
The technical scheme of the invention has the following advantages:
1. the invention provides a ball falling limiting device for a high-temperature gas cooled reactor absorption ball, which comprises the following components: the installation components are at least provided with two installation components, the axes of the installation components are mutually overlapped, and the installation components are detachably connected; the elastic buffer piece is arranged between two adjacent installation assemblies and is coaxially arranged with the installation assemblies; the movable electrode is arranged on two installation components at two ends, and one surface of the installation component provided with the movable electrode is away from the elastic buffer piece.
The high-temperature gas cooled reactor absorption ball falling limiting device is fixedly arranged in the gas cooled reactor, and is sleeved on the outer side of an absorption ball falling pipe of the high-temperature gas cooled reactor, the absorption ball falling pipe is in sliding fit with the high-temperature gas cooled reactor absorption ball falling limiting device, an upper limiting part and a lower limiting part are arranged outside the absorption ball falling pipe, the high-temperature gas cooled reactor absorption ball falling limiting device is arranged between the upper limiting part and the lower limiting part, when the upper limiting part of the absorption ball falling pipe is abutted with the mounting assembly, the bottom of the absorption ball falling pipe is inserted into the hopper, and the absorption ball falling pipe stops feeding; when the lower limiting part of the absorption ball falling pipe is abutted with another installation component, the bottom of the absorption ball falling pipe is withdrawn from the hopper, the absorption ball falling pipe is used for feeding, and the absorption ball falls into the storage bin from the absorption ball falling pipe. Limiting the position of an absorption ball falling pipe through a high-temperature gas cooled reactor absorption ball falling limiting device, enabling an upper movable electrode to be in contact with an upper limiting part when an installation component is in contact with the upper limiting part, receiving a signal for stopping feeding, and transmitting the signal to external control equipment; when the mounting assembly is in contact with the lower limiting part, the lower movable electrode is in contact with the lower limiting part, receives a signal for starting feeding, and transmits the signal to external control equipment. The signal for starting feeding and stopping feeding is controlled by the movable switch arranged on the mounting assembly, the signal is buried in the mounting assembly, high-temperature, high-pressure and strong radiation can be better tolerated, the service life of the signal is far longer than that of the travel switch, the problem of inconvenience in replacement of the travel switch is solved, and the risk of radiation leakage during replacement of the travel switch is avoided. Through setting up the elastic buffer piece and reinstalling the subassembly and buffering when the spacing portion contact of ball pipe falls with the absorption ball, can weaken the damage of collision each other to the installation component, can further prolong stop device's life.
2. The invention provides a ball falling limiting device for absorption balls of a high-temperature gas cooled reactor. In order to weaken the damage of high temperature and high pressure in the high temperature gas cooled reactor to stop device, through setting up the locating sleeve and the insulating sleeve that the installation component set up for mutual cover, the locating sleeve supports insulating sleeve in the outside, and the movable electrode is installed on insulating sleeve, guarantees that the movable electrode can stable work, avoids the movable electrode to take place the short circuit with metallic structure contact, guarantees the reliable triggering of movable electrode.
3. The invention provides a ball falling limiting device for a high-temperature gas cooled reactor absorption ball, wherein a positioning groove is formed in the outer side surface of an insulating sleeve along the circumferential direction, a positioning block is arranged in the inner side surface of the positioning sleeve along the axial direction, and the positioning block is matched and abutted with the positioning groove. Through constant head tank and locating piece cooperation for the relative position of positioning sleeve and insulating sleeve in the axial is fixed, avoids taking place the dislocation in the axial between positioning sleeve and the insulating sleeve and leads to the positioning sleeve to be unable by the triggering with the spacing portion contact of ball drop pipe movable electrode, promotes stop device's reliability.
4. The invention provides a ball falling limiting device for absorption balls of a high-temperature gas cooled reactor, wherein a plurality of connecting grooves are axially arranged on a mounting assembly at intervals, and fasteners are arranged in the connecting grooves so as to connect adjacent mounting assemblies with each other. Through locating the fastener in the spread groove to fix adjacent installation component, avoid leading to the fastener not hard up when installation component collides with the spacing portion of absorption ball falling bulb, promote the stability of fastener.
5. The invention provides a ball falling limiting device for an absorption ball of a high-temperature gas cooled reactor. Through setting up and compressing tightly the elastic component with electrode body coupling in the mounting groove for can be to the mounting groove internal displacement certain distance when electrode body is triggered, cushion electrode body's atress, reduce the damage of striking to electrode body, extension electrode body's life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a ball falling limiting device for a high-temperature gas cooled reactor absorption ball according to an embodiment of the invention.
Fig. 2 is a top view of a high temperature gas cooled reactor absorption ball drop limiter according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view taken along the direction A-A in fig. 2.
Fig. 4 is a schematic structural diagram of a falling bulb of a pebble bed high temperature gas cooled reactor in an embodiment of the invention.
Fig. 5 is a schematic structural diagram of a falling bulb of a pebble bed high temperature gas cooled reactor in the embodiment of the invention.
Reference numerals illustrate: 1. positioning a sleeve; 2. adjusting the backing plate; 3. an insulating sleeve; 4. compressing the gasket; 5. an electrode body; 6. a helical spring; 7. a lock nut; 8. a fastening bolt; 9. a wire; 10. a ball falling pipe; 11. and (5) installing a base.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
Fig. 1 to 3 show a ball falling limiting device for a high temperature gas cooled reactor absorption ball according to this embodiment, including: the device comprises two mounting assemblies, an elastic buffer piece arranged between the two mounting assemblies and a movable electrode arranged on the mounting assemblies. In this embodiment, the elastic buffer member is a compression washer 4, and the compression washer 4 is provided with a wavy protruding structure.
The axes of the two mounting assemblies are mutually overlapped, and the two mounting assemblies are detachably connected. The pressing washer 4 is installed between two adjacent installation components, and the pressing washer 4 is coaxially arranged with the installation components. The movable electrode is respectively provided with two sides of the two mounting assemblies, namely, one side of the mounting assembly provided with the movable electrode is arranged away from the pressing washer 4.
The installation component includes insulating sleeve 3 and cover establishes the positioning sleeve 1 in insulating sleeve 3 outside, and the movable electrode is installed on insulating sleeve 3. The outer side of the insulating sleeve 3 is in a step shape, and the inner side of the positioning sleeve 1 is in a corresponding step shape so as to limit the relative displacement of the insulating sleeve 3 and the positioning sleeve 1 in the axial direction, so that the positioning sleeve 1 and the insulating sleeve 3 can move together in the axial direction. Specifically, the outer side surface of the insulating sleeve 3 is provided with a positioning groove along the circumferential direction, the inner side surface of the positioning sleeve 1 is provided with a positioning block along the axial direction, and the positioning block is matched and abutted with the positioning groove. Through constant head tank and locating piece cooperation for the relative position of positioning sleeve and insulating sleeve in the axial is fixed, avoids taking place the dislocation in the axial between positioning sleeve and the insulating sleeve and leads to the positioning sleeve to be unable by the triggering with the spacing portion contact of ball drop pipe movable electrode, promotes stop device's reliability. The pressing washers 4 are arranged between the adjacent insulating sleeves 3, the pressing washers 4 are formed by assembling two semi-annular washers, and the outer diameter of the pressing washers 4 is equal to the inner diameter of the positioning sleeve 1, so that the outer edges of the pressing washers 4 are aligned with the outer edges of the insulating sleeves 3. An adjusting backing plate 2 is arranged between adjacent positioning sleeves 1. A plurality of connecting grooves are axially arranged on the edge of the positioning sleeve 1 of the installation assembly at intervals, and fastening bolts 8 serving as fasteners are installed in the connecting grooves so as to connect the adjacent installation assemblies with each other. In order to facilitate the installation of the limiting device on the air-cooled reactor absorption ball falling tube 10, the positioning sleeve 1 and the insulating sleeve 3 are assembled by two semi-ring cylinders, and the adjusting backing plate 2 is assembled by two semi-ring plates. When in assembly, an included angle of 90 degrees is formed between the connecting seal of the adjusting base plate 2 and the connecting seal of the positioning sleeve 1. The adjusting backing plate 2 is provided with through holes, and the fastening bolts 8 sequentially penetrate through the upper positioning sleeve 1, the through holes on the adjusting backing plate 2 and the lower positioning sleeve 1 to connect the two positioning sleeves 1 and the adjusting backing plate 2 into a whole. The cushioning capacity of the compression washer 4 can be adjusted by varying the thickness of the adjustment shim plate 2 between the positioning sleeves 1. The damage of the collision to the positioning sleeve 1 is reduced while the electrode body 5 is ensured to be triggered stably.
The insulating sleeve 3 is made of a semi-annular ceramic insulating material. The insulating sleeve 3 of the mounting assembly is provided with a stepped hole-shaped mounting groove, and the diameter of the outlet of the mounting groove is larger than that of the inner side. The movable electrode is mounted in the mounting groove, and the movable electrode part extends out of the mounting groove. By installing the movable electrode in the installation groove, the electrode body can have better irradiation resistance and high temperature resistance. The movable electrode comprises an electrode body 5 and a spiral spring 6 serving as a compression elastic piece, the electrode body 5 is slidably arranged in the mounting groove, one end of the spiral spring 6 is connected with the electrode body 5, and the other end of the spiral spring is connected with the mounting groove. The movable electrode further comprises a lock nut 7, the lock nut 7 is matched with threads at the outlet of the mounting groove, positioning protrusions are arranged on the side face of the electrode body 5 along the circumferential direction, and the electrode body 5 penetrates through the lock nut 7 and extends out of the lock nut 7 by 1-2 mm. And the positioning protrusion is in abutting fit with the locking nut 7. The bottom of the electrode body is connected with a wire 9 for transmitting signals.
When the high-temperature gas cooled reactor absorption ball falling limiting device is arranged in the gas cooled reactor, the absorption ball falling device operates, the stepping motor drives the falling ball pipe 10 to lift or insert downwards, when the falling ball pipe 10 moves to the upper limit position or the lower limit position, the limiting part on the falling ball pipe 10 is contacted with the movable electrode, the two electrodes are conducted, the limiting device is triggered, the stepping motor stops working, and the falling ball pipe 10 can stably stop at the upper limit position or the lower limit position. Because of the delay of signal transmission and control actions, the power-off of the driving mechanism is delayed for a certain time after the limiting device triggers, the pressing washer 4 is arranged under the movable electrode, and the spiral spring 6 is arranged on the lower side of the insulating sleeve 3, so that the electrode body 5 and the insulating sleeve 3 have certain displacement after the limiting device triggers, and the movable electrode body 5 and the insulating sleeve 3 are prevented from being extruded and damaged. The movable switch arranged on the mounting assembly controls signals for starting feeding and stopping feeding, the service life of the movable switch is far longer than that of the travel switch, the problem that the travel switch is inconvenient to replace is solved, and the risk of radiation leakage during replacement of the travel switch is avoided.
As an alternative embodiment, a plurality of mounting components are provided in the axial direction, the number of which can be determined according to the thickness of each mounting component, the distance between a pair of limiting parts on the absorption ball drop tube 10 in the air-cooled reactor, and the displacement distance of the absorption ball drop tube 10, a pressing washer 4 as a pressing washer 4 is installed between the plurality of mounting components, movable electrodes are installed on the two mounting components at the upper and lower ends, the movable electrode on the upper mounting component is installed on the upper side, and the movable electrode on the lower mounting component is installed on the lower side. Two movable electrodes are arranged on each mounting assembly, and the two movable electrodes are arranged in the diameter direction.
Example 2
As shown in fig. 4 and 5, in this embodiment, a pebble-bed high-temperature gas cooled reactor is provided, which has the ball falling limit device for the absorption balls of the high-temperature gas cooled reactor described in embodiment 1. The high-temperature gas cooled reactor absorption ball falling limiting device is arranged on a mounting base 11 in the gas cooled reactor, a matching sleeve is fixedly connected to the mounting base 11, a plurality of threaded holes are formed in the outer side wall of the mounting sleeve at intervals along the circumferential direction, and positioning bolts penetrate through the matching sleeve and then are in threaded fit with the threaded holes so as to fixedly connect the mounting sleeve with the matching sleeve. As shown in fig. 4, when the lower limiting part of the falling ball pipe is in contact with the falling ball limiting device of the absorption ball of the high-temperature gas cooled reactor, the falling ball pipe is in upper limit, and at the moment, the falling ball pipe starts to feed, and the absorption ball can smoothly enter a bin at the lower side from the falling ball pipe; as shown in fig. 5, when the upper limit part of the falling ball pipe is in contact with the falling ball limit device of the absorption ball of the high-temperature gas cooled reactor, the falling ball pipe is in lower limit, and at the moment, the lower end of the falling ball pipe is inserted into the storage bin, and the absorption ball stops falling. When the high-temperature gas cooled reactor absorption ball falling limiting device is arranged in the gas cooled reactor, the absorption ball falling device operates, the stepping motor drives the falling ball pipe 10 to lift or insert downwards, when the falling ball pipe 10 moves to the upper limit position or the lower limit position, the limiting part on the falling ball pipe 10 is contacted with the movable electrode, the two electrodes are conducted, the limiting device is triggered, the stepping motor stops working, and the falling ball pipe 10 can stably stop at the upper limit position or the lower limit position. And a travel switch is not required to be used in the air-cooled reactor, so that the risk of radiation leakage during the replacement of the travel switch is eliminated.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (6)
1. The utility model provides a high temperature gas cooled reactor absorption ball limiting device that falls, its characterized in that, limiting device is fixed to be set up in the gas cooled reactor, and the cover is established and is installed in the absorption ball of high temperature gas cooled reactor and fall the bulb outside, absorption ball fall the bulb with limiting device sliding fit, limiting device includes:
the installation assembly is at least provided with two, the axes of a plurality of installation assemblies are mutually overlapped, a plurality of installation assemblies are detachably connected, and the installation assembly comprises an insulating sleeve (3) and a positioning sleeve (1) sleeved on the outer side of the insulating sleeve (3);
the elastic buffer piece is arranged between two adjacent installation assemblies, and the elastic buffer piece and the installation assemblies are coaxially arranged;
the movable electrode is installed on two installation components that are located both ends, the installation component is equipped with the one side of movable electrode deviates from elastic buffer sets up, be provided with the mounting groove on installation component's insulating sleeve (3), movable electrode installs in the mounting groove, just movable electrode part extends to outside the mounting groove, movable electrode includes electrode body (5), lock nut (7) and compresses tightly the elastic component, electrode body (5) slidable mounting is in the mounting groove, compress tightly elastic component one end with electrode body (5) are connected, the other end with the mounting groove is connected, lock nut (7) fixed mounting is in mounting groove exit, electrode body (5) side is equipped with the location arch along circumference, electrode body (5) run through lock nut (7), just the location arch with lock nut (7) butt cooperation.
2. The high-temperature gas cooled reactor absorption ball falling limiting device according to claim 1, wherein the elastic buffer piece is arranged between adjacent insulating sleeves (3), and an adjusting base plate (2) is arranged between adjacent positioning sleeves (1).
3. The high-temperature gas cooled reactor absorption ball falling limiting device according to claim 1 or 2, wherein a positioning groove is formed in the outer side face of the insulating sleeve (3) along the circumferential direction, a positioning block is arranged in the inner side face of the positioning sleeve (1) along the axial direction, and the positioning block is in fit and abutting connection with the positioning groove.
4. The high temperature gas cooled reactor absorption ball drop limiter according to claim 1 or 2, wherein a plurality of connecting grooves are axially arranged on the mounting assembly at intervals, and fasteners are arranged in the connecting grooves so as to connect the adjacent mounting assemblies with each other.
5. The high-temperature gas cooled reactor absorption ball falling limiting device according to claim 1 or 2, wherein the elastic buffer piece is a pressing washer (4), and the pressing washer (4) is provided with a wavy bulge structure.
6. A pebble-bed high-temperature gas cooled reactor, characterized by comprising the high-temperature gas cooled reactor absorption ball falling limiter according to any one of claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111237582.1A CN114005560B (en) | 2021-10-22 | 2021-10-22 | Ball stop device falls in high temperature gas cooled reactor absorption ball and ball bed formula high temperature gas cooled reactor |
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| CN202111237582.1A CN114005560B (en) | 2021-10-22 | 2021-10-22 | Ball stop device falls in high temperature gas cooled reactor absorption ball and ball bed formula high temperature gas cooled reactor |
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| CN114005560B true CN114005560B (en) | 2023-07-04 |
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| CN114842991B (en) * | 2022-04-19 | 2023-05-16 | 华能核能技术研究院有限公司 | Integrated ball falling pipe of charge level indicator of absorption ball shutdown system |
| CN115069560B (en) * | 2022-06-01 | 2023-10-27 | 华能核能技术研究院有限公司 | Binary channels piece separation flow resistor |
| CN115171931B (en) * | 2022-06-24 | 2024-01-23 | 华能山东石岛湾核电有限公司 | Material level controllable ball falling device for high-temperature gas cooled reactor |
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