CN115069560B - Binary channels piece separation flow resistor - Google Patents

Binary channels piece separation flow resistor Download PDF

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Publication number
CN115069560B
CN115069560B CN202210617089.0A CN202210617089A CN115069560B CN 115069560 B CN115069560 B CN 115069560B CN 202210617089 A CN202210617089 A CN 202210617089A CN 115069560 B CN115069560 B CN 115069560B
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China
Prior art keywords
ball
turntable
debris
separation
lower box
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CN115069560A (en
Inventor
张振鲁
雷伟俊
罗勇
孟剑
齐炳雪
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Huaneng Nuclear Energy Technology Research Institute Co Ltd
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Huaneng Nuclear Energy Technology Research Institute Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/04—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
    • 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
    • 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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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Transmission Devices (AREA)
  • Machine Tool Units (AREA)

Abstract

The application provides a double-channel debris separation flow resistor which comprises an upper cover, a ball passing turntable, a debris separation turntable, a lower box body and a driving device, wherein a ball inlet pipe for introducing fuel balls is arranged on the upper cover, a ball passing hole is arranged on the ball passing turntable, a ball falling hole and a debris separation hole are arranged on the debris separation turntable, a lower box body ball outlet pipe and a lower box body debris shunt pipe are arranged on the lower box body, the debris separation turntable is driven to rotate by the driving device, and the debris separation turntable drives the ball passing turntable to rotate, so that the fuel balls and the fuel balls are separated by the mutual matching of the ball passing turntable and the debris separation turntable. The application adopts a double-channel structure, and one flow choker can realize the ball unloading and flow choking functions of the double-ball-way channel, thereby reducing the action times of the whole system and reducing the complexity of the system. The application adopts the chip separation structure, can separate small-sized chips from the fuel ball, and independently discharge and store the chips, thereby reducing the blocking probability of the flow choking device caused by the chips and improving the operation reliability of the equipment.

Description

Binary channels piece separation flow resistor
Technical Field
The application relates to the technical field of reactor engineering, in particular to a double-channel debris separation flow blocker.
Background
The high temperature gas cooled reactor fuel loading and unloading system performs the reactor no-shutdown refueling function, is a key system for ensuring long-term safe and stable operation of the high temperature gas cooled reactor, and mainly performs the functions of loading new fuel into the reactor core, unloading spent fuel out of the reactor core, recycling fuel elements back to the reactor core and the like. The high temperature gas cooled reactor demonstration engineering fuel loading and unloading system adopts a single-row and single-body directional ordered conveying principle in design, and utilizes two modes of gravity and air to convey and load and unload fuel elements, wherein the former is conveyed from top to bottom in a vertical or inclined pipeline by means of gravity by utilizing the favorable geometric shape of spherical fuel elements; the latter relies on pneumatic lifting systems to achieve bottom-up delivery of the fuel elements. The flow choking device is key conveying conversion equipment of an exemplary engineering fuel loading and unloading system of the high-temperature gas cooled reactor nuclear power station, and is mainly used for executing a spherical element single conveying function and a gas flow choking function. In normal operation, the number of actions of the main circulation choke is over million times per year, and the main circulation choke has a great blocking risk in the high-frequency operation process.
In order to solve the blocking problem of the flow choking device, a two-channel chip separation flow choking device which can solve the blocking problem of the flow choking device caused by small fragments and realize the functions of two-channel ball passing and flow choking is required to be designed.
Disclosure of Invention
The application aims to provide a double-channel chip separation flow resistor, which can solve the problem of blocking of the flow resistor caused by small fragments, realize the functions of ball passing and flow blocking of double channels and improve the reliability of the flow resistor.
In one aspect, an embodiment of the present application provides a dual-channel debris separation choke, including: a housing, a ball passing turntable and a debris separating turntable.
The shell comprises an upper cover and a lower box body which are detachably connected, a ball inlet pipe for introducing fuel balls is arranged on the upper cover, a lower box body ball outlet pipe and a lower box body debris shunt pipe are arranged on the lower box body, a cavity is formed in the shell, and a ball passing turntable and a debris separation turntable are sequentially and rotatably connected in the cavity from top to bottom.
The ball passing rotary table is provided with a plurality of ball passing holes uniformly distributed in the longitudinal direction, the thickness of the ball passing rotary table is half of the diameter of the fuel ball, and at least one ball passing hole is communicated with the ball inlet pipe by rotating the ball passing rotary table.
The debris separation rotary table is characterized in that a ball falling hole and a debris separation hole are longitudinally formed in the debris separation rotary table, at least one side face of the debris separation hole in the rotation direction of the debris separation rotary table is an inclined face, the opening area of the upper end of the debris separation hole is larger than that of the lower end of the debris separation rotary table, the thickness of the debris separation rotary table is half of the diameter of a fuel ball, the ball falling hole or the debris separation hole is communicated with any ball passing hole or any lower box body ball outlet pipe or a lower box body debris shunt pipe through rotation of the debris separation rotary table, the debris separation rotary table is connected with a driving device and is driven to rotate, and the debris separation rotary table drives the ball passing rotary table to rotate through a driven device.
The application adopts a double-channel structure, and one flow choker can realize the ball unloading and flow choking functions of the double-ball-way channel, thereby reducing the action times of the whole system and reducing the complexity of the system.
The application adopts the chip separation structure, can separate small-sized chips from the fuel ball, and independently discharge and store the chips, thereby reducing the blocking probability of the flow choking device caused by the chips and improving the operation reliability of the equipment.
In some embodiments, the follower device comprises at least two follower rods and a plurality of unidirectional follower grooves connected end to end, the unidirectional follower grooves are arranged around the edge of the lower surface of the ball turntable, the depth in each unidirectional follower groove increases progressively along the rotating direction of the ball turntable, the longitudinal section of each unidirectional follower groove is of a right triangle structure, each unidirectional follower groove comprises a vertical surface and an inclined surface, the follower rods are arranged in follower rod mounting grooves on the upper surface of the debris separation turntable, the lower ends of the follower rods are connected to the bottom ends of the follower rod mounting grooves through second springs, the upper ends of the follower rods are inserted into the unidirectional follower grooves, and the follower rods move in the unidirectional follower grooves along with the rotation of the debris separation turntable.
When the follower rod moves to the vertical surface of the unidirectional follower groove and then moves continuously, the follower rod drives the passing ball turntable and the debris separating turntable to move synchronously.
In some embodiments, the driving device comprises a driving motor, a transmission mechanism and a worm shaft, wherein an output end of the driving motor is connected with an input end of the transmission mechanism, an output end of the transmission mechanism is connected with the worm shaft and drives the worm shaft to rotate, worm gear teeth meshed with the worm shaft are arranged on the periphery of the debris separation turntable, and rotation of the worm shaft drives the debris separation turntable to rotate.
In some embodiments, the ball passing turntable and the chip separating turntable are rotatably connected between the upper cover and the lower box body through an intermediate shaft, the intermediate shaft is a stepped shaft, a first bearing is connected between the intermediate shaft and the upper cover, a second bearing is connected between the ball passing turntable and the chip separating turntable, the upper part of the second bearing is connected with the ball passing turntable, the lower part of the second bearing is connected with the chip separating turntable, and a third bearing is connected between the intermediate shaft and the lower box body.
In some embodiments, the upper cover lower terminal surface equipartition is equipped with a plurality of and revolves and hinder the ware mounting groove, and every revolves and hinder the ware mounting groove and install soon and hinder the ware soon, revolves and hinder the ware mounting groove and hold soon completely, and the ball carousel upper surface is opened and is had and revolves and hinder the ware groove that hinders the ware mounting groove quantity equally soon in the position corresponding with the ware mounting groove soon, when ball carousel is rotatory to the position corresponding that revolves and hinder the ware mounting groove soon, revolves and hinder a part of ware and get into soon and hinder the ware groove soon from revolveing and hinder the ware mounting groove soon, revolves and hinder the degree of depth in ware mounting groove and be greater than the degree of depth that revolves and hinder the ware groove soon.
In some embodiments, the cyclone resistor is a gravity ball or a spring telescopic rod, and the cyclone resistor groove is an arc groove.
When the cyclone resistor is a gravity ball, the depth of the cyclone resistor groove is smaller than half of the diameter of the gravity ball, and a part of the gravity ball falls into the cyclone resistor groove from the cyclone resistor mounting groove through self gravity.
When the rotary resistor is a spring telescopic rod, the spring telescopic rod comprises a first spring and a telescopic rod, one end of the telescopic rod is connected in the rotary resistor mounting groove through the first spring, and the other end of the telescopic rod stretches into the rotary resistor groove through the elastic force of the first spring.
In some embodiments, two ball inlet pipes are arranged on the upper cover, the positions of the two ball inlet pipes on the upper cover are opposite, and 6 spin resistor mounting grooves are arranged.
And 6 ball passing holes and 6 unidirectional follow-up grooves are formed in the ball passing rotary table.
The chip separation turntable is characterized in that 2 chip falling holes and 2 chip separation holes are formed in the chip separation turntable, the positions of the two chip falling holes are symmetrical about the center of the chip separation turntable, the positions of the two chip separation holes are symmetrical about the center of the chip separation turntable, the center lines of the two chip separation holes and the two chip falling holes form an included angle of 60 degrees, two follow-up rods are arranged, and the two follow-up rods are symmetrical about the center of the chip separation turntable.
The lower box body is provided with two lower box body ball outlet pipes and two lower box body chip shunt pipes, the positions of the two lower box body ball outlet pipes correspond to the positions of the two ball falling holes, and the positions of the two lower box body chip shunt pipes correspond to the positions of the two chip separation holes.
In some embodiments, the lower case and the upper cover are detachably connected by bolts.
In some embodiments, the slope in each of the one-way follower slots is less than 1:20, the depth difference between the head end and the tail end in each one-way follow-up groove is more than 6mm.
In some embodiments, the worm shaft is disposed in the lower case, the middle part of the worm shaft is a worm part, two sides of the worm part are connected with the lower case through a fourth bearing, and one end of the worm shaft is connected with the output end of the transmission mechanism.
Another aspect of the embodiments of the present application provides a debris separation method for the dual-channel debris separation flow resistor, including the following steps:
s1, fuel balls enter the double-channel debris separation flow choker through a ball inlet pipe of an upper cover and are stacked in the ball inlet pipe, in an initial state, ball passing holes of a ball passing turntable, debris separation holes of the debris separation turntable and the ball inlet pipe are coaxial, the ball inlet pipe is positioned between a ball outlet pipe of a lower box body and a debris shunt pipe of the lower box body, and fuel balls and fuel ball debris directly fall into the debris separation holes through the ball passing holes;
s2, a driving motor rotates positively to drive a worm shaft to rotate, the worm shaft drives a debris separation turntable to rotate towards the direction of the debris shunt pipe of the nearest lower box body, the ball passing turntable is static under the action of a rotary resistor, a follow-up rod moves in a one-way follow-up groove of the ball passing turntable along with the rotation of the debris separation turntable, fuel balls lift up to leave the debris separation hole under the action of an inclined surface of the debris separation hole, and fuel ball debris follows rotation in the debris separation hole;
s3, when the chip separation rotary table rotates to the coaxial line of the chip separation hole and the chip shunt pipe of the lower box body, the driving motor stops running, at the moment, the ball falling hole and the ball passing hole of the ball passing rotary table are coaxial, the unidirectional follow-up rod moves by the distance of a unidirectional follow-up groove and is abutted to the vertical surface of the unidirectional follow-up groove, the fuel ball enters the ball falling hole, and the fuel ball chips fall into the chip shunt hole of the lower box body;
s4, the driving motor reversely drives the worm shaft to rotate, the worm shaft drives the debris separation rotary table to rotate towards the direction of the ball outlet pipe of the nearest lower box body, the unidirectional follow-up rod transmits rotation to the ball passing rotary table through the vertical face of the unidirectional follow-up groove, the ball passing rotary table is driven to synchronously rotate along with the debris separation rotary table, the fuel balls synchronously move along with the ball falling holes until the ball falling holes are coaxial with the ball outlet pipe of the lower box body, and the driving motor stops running, so that the fuel balls fall into the ball outlet pipe of the lower box body.
The chip separation method can realize the chip separation and ball falling and flow blocking functions by adopting the single driving device, reduce the complexity of equipment and improve the economical efficiency of the demonstration engineering of the high-temperature gas cooled reactor.
The beneficial effects of the application are as follows:
(1) The application adopts a double-channel structure, and one flow choker can realize the ball unloading and flow choking functions of the double-ball-way channel, thereby reducing the action times of the whole system and reducing the complexity of the system.
(2) The application adopts the chip separation structure, can separate small-sized chips from the fuel ball, and independently discharge and store the chips, thereby reducing the blocking probability of the flow choking device caused by the chips and improving the operation reliability of the equipment.
(3) The application can realize the functions of chip separation and ball falling and flow blocking by adopting a single driving device, reduce the complexity of equipment and improve the economical efficiency of the demonstration engineering of the high-temperature gas cooled reactor.
Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and may be better understood from the following description of embodiments with reference to the accompanying drawings,
wherein:
FIG. 1 is a schematic illustration of a dual channel debris separation choke in accordance with an embodiment of the present application;
FIG. 2 is a schematic illustration of the internal structure of a dual channel debris separation choke in accordance with an embodiment of the present application;
FIG. 3 is a top view of a part exploded view of a dual channel debris separation choke in an embodiment of the application;
FIG. 4 is a bottom view of an exploded view of a dual channel debris separation choke in accordance with an embodiment of the present application;
FIG. 5 is a schematic view of the bottom structure of the upper cover of FIG. 4;
FIG. 6 is a schematic top view of the ball passing carousel of FIG. 3;
FIG. 7 is a schematic bottom view of the ball passing carousel of FIG. 4;
FIG. 8 is a schematic top view of the chip separating turntable of FIG. 3;
FIG. 9 is a schematic bottom view of the chip separating turntable of FIG. 4;
FIG. 10 is a cross-sectional view of the debris separating aperture in the debris separating rotor of FIG. 8;
FIG. 11 is a schematic view of the structure of the lower case;
FIG. 12 is a schematic view of the configuration of the drive mechanism mated with the debris separating turntable;
FIG. 13 is a schematic view of the driving device and the lower case;
FIG. 14 is a schematic view of the internal structure of the drive mechanism mated with the debris separating turntable;
FIG. 15 is a schematic diagram of the connection between the spin resistor and the upper cover and ball passing turntable;
FIGS. 16-19 are operational flow diagrams of a dual channel debris separation choke in accordance with embodiments of the present application;
FIGS. 20-23 are schematic flow diagrams of the dual channel debris separation choke in accordance with embodiments of the present application when debris is present;
reference numerals:
1-an upper cover; 101-ball inlet pipe; 102-a resolver mounting groove; 2-a first bearing; 3-a spin resistor; 4-an intermediate shaft; 5-passing a ball turntable; 501-ball passing holes; 502-a unidirectional follow-up groove; 503-spin-resistor slots; 6-a second bearing; 7-a follower lever; 701-a second spring; 8-a chip separation turntable; 801-ball drop hole; 802-debris separation aperture; 803-follower rod mounting groove; 9-a third bearing; 10-a transmission shaft end cover; 11-a bearing retainer ring; 12-fourth bearings; 13-lower box body; 1301-discharging a ball pipe from the lower box body; 1302-lower housing debris shunt; 1303-a second chamber; a 14-worm shaft; 15-a transmission; 16-a drive motor; 17-fuel sphere; 18-fuel sphere chips.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
A dual channel debris separation choke in accordance with embodiments of the present application is described below with reference to the accompanying drawings.
As shown in fig. 1 to 4, an embodiment of the present application provides a dual-channel debris separation choke, including: the upper cover 1, the ball passing turntable 5, the chip separating turntable 8, the lower box 13 and the driving device.
The upper cover 1 and the lower box 13 are detachably connected by bolts. Further, a circle of a plurality of bolt holes are formed in the outer ring of the upper cover 1, bolt holes matched with the bolt holes of the upper cover 1 are formed in the upper end face of the lower box body 13, and the upper cover 1 and the lower box body 13 are fixedly connected through bolts.
As shown in fig. 5, the upper cover 1 is a stepped flange, a third-order bearing mounting groove is formed in the center of the lower end face of the upper cover 1, 2-6 cyclone resistor mounting grooves 102 are formed in the outer side of the third-order bearing mounting groove, the number of cyclone resistor mounting grooves 102 in the embodiment is 6, cyclone resistors 3 are arranged in each cyclone resistor mounting groove 102, and the cyclone resistors 3 can be completely contained in the cyclone resistor mounting grooves 102. The lower end face of the upper cover 1 is provided with two ball inlet holes, the two ball inlet holes are symmetrical about the center of the third-order bearing mounting groove, the positions of the two ball inlet holes are opposite and are arranged at 180 degrees, and the ball inlet holes are positioned at the outer side of the circle of rotary resistor mounting groove 102. The upper end of the upper cover 1 is provided with 2 ball inlet pipes 101 for leading in the fuel balls 17, and the ball inlet pipes 101 are communicated with the ball inlet holes. The lower surface of upper cover 1 has still seted up the seal groove for install the sealing ring, and the seal groove is located the inboard of round bolt hole.
As shown in fig. 11 and 13, the lower case 13 is a box-packed case, and is divided into two connected chambers including a first chamber and a second chamber 1303. The first chamber is a cylinder-like chamber for mounting the ball passing turntable 5, the debris separating turntable 8, the intermediate shaft 4, etc. A bearing mounting groove is provided in the central position in the first chamber for mounting a third bearing 9. The position along the bearing mounting groove distributes 4 holes, and two of them are lower box ball hole, and two lower box ball holes are about bearing mounting groove central symmetry setting. The other two holes are lower box body chip diversion holes, and the two lower box body chip diversion holes are symmetrically arranged about the center of the bearing mounting groove.
The midlines of the two lower box debris diversion holes and the midlines of the two lower box ball outlet holes form an included angle of 60 degrees, and the two midlines form an included angle of 60 degrees with the midlines of the two ball inlet holes of the upper cover 1.
The lower end of the lower box 13 is provided with 2 lower box ball outlet pipes 1301 and 2 lower box chip shunt pipes 1302, the lower box ball outlet pipes 1301 are communicated with the lower box ball outlet holes, and the lower box chip shunt pipes 1302 are communicated with the lower box chip shunt holes.
In some embodiments, the lower tank ball outlet hole is a trumpet-shaped opening, the upper diameter of the hole is 50% larger than the diameter of the fuel ball 17, and the lower diameter of the hole is slightly larger than the diameter of the fuel ball 17 to prevent the fuel ball 17 from being blocked.
The second chamber 1303 is in a through hole shape for mounting the worm shaft 14, the fourth bearing 12, the bearing retainer 11, and the like. Threaded holes are formed in the outer surfaces of the two ends of the second chamber 1303, and are used for installing the transmission shaft end cover 10 and the transmission device 15.
In the first chamber, the ball passing turntable 5 is located above the debris separating turntable 8. The ball passing turntable 5 and the chip separating turntable 8 are connected to the upper cover 1 and the lower box 13 through the intermediate shaft 4.
The intermediate shaft 4 is a stepped shaft, and comprises a first step, a second step, a third step and a fourth step, wherein the first step is used for installing the first bearing 2, the outer diameter of the second step is larger than that of the first step, the second step is used for preventing the first bearing 2 from moving along the axial direction, a key groove is formed in the third step and used for installing the ball passing turntable 5, and a key groove is formed in the fourth step and used for installing the chip separating turntable 8 and the third bearing 9.
The first bearing 2 is connected between the intermediate shaft 4 and the upper cover 1, the first bearing 2 is an angular contact ball bearing, and is arranged in a bearing mounting groove of the upper cover 1 and sleeved on the intermediate shaft 4. The first bearing 2 adopts an oil-free solid lubrication process.
As shown in fig. 6 to 7, the ball passing turntable 5 is a stepped disk, and the thickness of the disk surface is 1/2 of the diameter of the fuel ball 17. The center of the ball passing turntable 5 is provided with a shaft hole and a key slot for connecting with the intermediate shaft 4. A thrust bearing mounting groove is formed outside the center hole of the lower surface of the ball passing turntable 5 and is used for mounting the second bearing 6. The second bearing 6 is a thrust bearing, and the second bearing 6 is connected between the ball passing turntable 5 and the debris separating turntable 8. The upper part of the second bearing 6 is arranged in a thrust bearing mounting groove on the passing ball rotary table 5 and is used for being connected with the passing ball rotary table 5, and the lower part of the second bearing 6 is connected with the scrap separating rotary table 8. The second bearing 6 adopts an oil-free solid lubrication process.
The ball passing turntable 5 is longitudinally and uniformly provided with a circle of 6 ball passing holes 501 around the outer side of the thrust bearing mounting groove, and the inner diameter of each ball passing hole 501 is slightly larger than the diameter of the fuel ball 17 for the fuel ball 17 to pass through. The pitch of any two ball passing holes 501 at the opposite positions is equal to the pitch of two ball inlet holes. By rotating the ball passing dial 5, any two opposite ball passing holes 501 can be communicated with the two ball inlet pipes 101, and the fuel balls 17 can fall into the ball passing holes 501 from the ball inlet pipes 101.
In some specific embodiments, the upper surface of the ball through hole 501 is rounded to prevent gouging the fuel ball 17.
The edge of the lower surface surrounding the ball turntable 5 is provided with 6 unidirectional follow-up grooves 502 which are connected end to end, the depth in each unidirectional follow-up groove 502 increases gradually along the rotating direction (clockwise) of the ball turntable 5, the longitudinal section of each unidirectional follow-up groove 502 is in a right triangle structure, and each unidirectional follow-up groove 502 comprises a vertical surface and an inclined surface. The slope in each one-way follower slot 502 is less than 1:20, the difference in depth between the leading and trailing ends within each one-way follower slot 502 is greater than 6mm. The ball through hole 501 is located between the thrust bearing mounting slot and the one-way follower slot 502.
As shown in fig. 6 and 15, a circle of resistance rotating grooves 503 are formed on the upper surface of the ball passing turntable 5 around the shaft hole in the center, the number of the resistance rotating grooves 503 is 2-6, and in the embodiment, the number of the resistance rotating grooves 503 is 6. The positions of the resolver grooves 503 correspond to the positions of the resolver mounting grooves 102. The number of resolver grooves 503 is equal to the number of resolver mounting grooves 102, and the number of resolver mounting grooves 102 is equal to the number of ball holes 501. A resolver slot 503 is located between the shaft bore and the ball via 501. When the ball dial 5 is rotated to a position where the resolver groove 503 corresponds to the resolver mounting groove 102, a part of the resolver 3 enters the resolver groove 503 from the resolver mounting groove 102, and the depth of the resolver mounting groove 102 is larger than the depth of the resolver groove 503. The function of the resolver 3 is that: the spin resistor 3 provides a certain frictional resistance when the ball passing turntable 5 generates a movement or movement trend.
In some embodiments, the resolver 3 is a gravity ball or a spring telescoping rod, and the resolver groove 503 is a shallower arcuate groove.
When the resolver 3 is a gravity ball, the depth of the resolver groove 503 is less than half the diameter of the gravity ball. When the ball passing turntable 5 rotates to the position where the cyclone block groove 503 corresponds to the cyclone block mounting groove 102, the lower part of the gravity ball falls into the cyclone block groove 503 from the cyclone block mounting groove 102 by self gravity, so that the ball passing turntable 5 is slightly blocked, and a certain resistance is provided for the rotation of the ball passing turntable 5.
When the rotary resistor 3 is a spring telescopic rod, the spring telescopic rod comprises a first spring and a telescopic rod, the upper end of the telescopic rod is connected into the rotary resistor mounting groove 102 through the first spring, and the lower end of the telescopic rod props against the upper surface of the ball passing turntable 5. When the ball passing turntable 5 rotates to the position where the cyclone block groove 503 corresponds to the cyclone block mounting groove 102, the lower end of the telescopic rod stretches into the cyclone block groove 503 through the elastic force of the first spring, so that the ball passing turntable 5 is slightly clamped, and a certain resistance is provided for the rotation of the ball passing turntable 5.
In some specific embodiments, the upper and lower surfaces of the ball passing turntable 5 are subjected to a molybdenum disulfide solid lubrication treatment.
As shown in fig. 8 to 10, the chip separating disk 8 has a stepped disk shape, and the disk surface thickness is 1/2 of the diameter of the fuel sphere 17. The center of the chip separating rotary disk 8 is provided with a shaft hole and a key groove for connecting with the intermediate shaft 4. The periphery of the chip separation rotary disc 8 is provided with a circle of circumferential worm gear teeth which are matched with a worm shaft 14 of the driving device to form a worm and gear mechanism.
In some specific embodiments, the surfaces of the worm gear teeth are treated by adopting a molybdenum disulfide solid lubrication process, so that lubrication is ensured to be reliable.
The chip separating rotary disk 8 is longitudinally provided with 2 ball falling holes 801 and 2 chip separating holes 802, the positions of the two ball falling holes 801 are symmetrical and distributed at 180 degrees about the center of the chip separating rotary disk 8, and the positions of the two chip separating holes 802 are symmetrical and distributed at 180 degrees about the center of the chip separating rotary disk 8. The two debris separation apertures 802 are at a 60 angle to the midline of the two ball drop apertures 801. The pitch of the two chip separating holes 802 is the same as the pitch of any two opposite ball passing holes 501 in the ball passing turntable 5, the pitch of the two ball falling holes 801 is also the same as the pitch of any two opposite ball passing holes 501 in the ball passing turntable 5, and the fuel balls 17 fall into the ball falling holes 801 or the chip separating turntable 8 from the ball passing holes 501 by the relative rotation of the ball passing turntable 5 and the chip separating turntable 8. The ball drop hole 801 has a diameter slightly larger than the diameter of the fuel ball 17.
The chip separation hole 802 is in an inclined round hole form, the lower end of the chip separation hole 802 is a standard round hole, the diameter is slightly larger than that of the fuel ball 17, the upper end of the chip separation hole 802 is in an inclined round hole shape, the opening area of the upper end of the chip separation hole 802 is larger than that of the lower end, one side of the chip separation hole 802 is an inclined plane, the aperture of one end of the upper end opening of the chip separation hole 802 is about 50% larger than that of the fuel ball 17, chips are convenient to fall into the chip separation hole 802, the aperture of the other end of the upper end opening is the same as that of the ball falling hole 801, the longitudinal section of the chip separation hole 802 is in a right trapezoid shape, the left end is an inclined line, the gradient is about 45 degrees, the right end is a vertical line, the fuel ball 17 can conveniently roll out the chip separation hole 802 upwards through the inclined plane in the rotation process of the chip separation turntable 8, and the chips of the fuel ball 17 are reserved in the chip separation hole 802. By rotating the chip separating turntable 8, the two ball drop holes 801 or the two chip separating holes 802 are communicated with the ball passing holes 501 which are opposite to any two positions, or are communicated with the two lower box ball outlet pipes 1301 or the two lower box chip dividing pipes 1302, so that the fuel balls 17 can fall into the ball drop holes 801 or the chip separating holes 802 from the ball passing holes 501 of the ball passing turntable 5, and then the fuel balls 17 fall into the lower box ball outlet pipes 1301, and meanwhile, the chips fall into the lower box chip dividing pipes 1302.
A thrust bearing mounting groove is formed outside the shaft hole in the center of the upper surface of the debris separating turntable 8 and is used for mounting the second bearing 6.
The upper surface of the chip separating rotary disk 8 is provided with 2 follower rod mounting grooves 803, and the two follower rod mounting grooves 803 are symmetrical about the center of the chip separating rotary disk 8 and distributed at 180 degrees. A follower rod 7 is mounted in each follower rod mounting groove 803, and the inside diameter of the follower rod mounting groove 803 is matched with the outside diameter of the follower rod 7.
As shown in fig. 16, the follower rod 7 has a rod shape, a second spring 701 is installed in the lower portion of the follower rod 7, the lower end of the second spring 701 is fixedly connected to the bottom end of the follower rod mounting groove 803, the upper end of the second spring 701 is connected to the inside of the follower rod 7, and the upper portion of the follower rod 7 has a spherical shape. When the second spring 701 is compressed, the follower lever 7 is completely inside the follower lever mounting groove 803; when the second spring 701 is ejected, the upper portion of the follower lever 7 protrudes from the follower lever mounting groove 803 due to the elastic force of the second spring 701, and further protrudes into the one-way follower groove 502, and abuts against the inclined surface of the one-way follower groove 502.
The follower rod 7 moves within the one-way follower slot 502 with rotation of the debris separating turntable 8. When the chip separating rotary disk 8 moves anticlockwise, the follower rod 7 moves along the inclined plane of the unidirectional follower groove 502 in the direction away from the vertical plane, the ball passing rotary disk 5 does not move, and after the follower rod 7 moves to the rightmost end of the unidirectional follower groove 502, if the follower rod still moves continuously, the chip separating rotary disk can enter the next unidirectional follower groove 502; when the chip separating turntable 8 moves clockwise, the follower rod 7 moves to the vertical surface of the unidirectional follower groove 502, and if the movement is continued, the follower rod 7 drives the passing ball turntable 5 and the chip separating turntable 8 to move synchronously due to the blocking of the vertical surface.
In some specific embodiments, the whole surface of the unidirectional follower rod 7 is treated by adopting a molybdenum disulfide solid lubrication process, so that the sliding reliability is ensured.
The intermediate shaft 4 is connected with the lower box 13 through a third bearing 9. The third bearing 9 is an angular contact ball bearing, is arranged on a bearing mounting groove of the lower box 13 and is sleeved on a fourth step of the intermediate shaft 4. The third bearing 9 adopts an oil-free solid lubrication process.
As shown in fig. 12 to 14, the driving device comprises a driving motor 16, a transmission mechanism and a worm shaft 14, wherein an output end of the driving motor 16 is connected with an input end of the transmission mechanism, an output end of the transmission mechanism is connected with the worm shaft 14 and drives the worm shaft 14 to rotate, worm gear teeth meshed with the worm shaft 14 are arranged on the periphery of the debris separation turntable 8, and the rotation of the worm shaft 14 drives the debris separation turntable 8 to rotate clockwise or anticlockwise.
The worm shaft 14 is a stepped shaft, the middle part is a worm part, steps on two sides of the worm part are connected with the lower box 13 through the fourth bearing 12, and one end of the worm shaft 14 is an interface for connecting the output end of the transmission mechanism.
The drive motor 16 is a precision servo motor.
The transmission device 15 is a power transmission device for connecting the drive motor 16 and the worm shaft 14, and comprises a speed reducer and a transmission; the speed reducer can be a planet gear speed reducer or a harmonic speed reducer and the like; the actuator may be a permanent magnet actuator or an electromagnetic actuator, converting a dynamic seal into a static seal. The connection and driving manner of the transmission device 15 and the driving motor 16 as well as the worm shaft 14 are well known and will not be described herein.
The fourth bearing 12 is an angular ball bearing, and is fitted around both ends of the worm shaft 14. And a bearing baffle ring 11 is further arranged between the fourth bearing 12 and the lower box 13, and the bearing baffle ring 11 is of a circular ring structure and is used for positioning and mounting the fourth bearing 12, so that the size adjustment is convenient during the mounting.
One end of the second chamber 1303 of the lower housing 13 is provided with a transmission device 15, and the other end is provided with a transmission shaft end cover 10. The end cover 10 of the transmission shaft is a flange plate, and bolt holes are formed in the flange plate. The flange bottom surface is equipped with the boss for assembly bearing baffle ring 11.
In some embodiments, a groove is provided outside the flange boss for mounting the seal ring.
The application enables the fuel ball and the fuel ball scraps to be separated through the mutual matching of the ball passing turntable and the scraps separating turntable.
The working flow of the double-channel debris separation flow resistor comprises the following steps:
a) As shown in fig. 16, the fuel ball 17 enters the dual-channel debris separation flow resistor through the ball inlet pipe 101 of the upper cover 1 and is accumulated in the ball inlet pipe 101, in the first stage, the ball passing hole 501 of the ball passing turntable 5, the debris separation hole 802 of the debris separation turntable 8 and the ball inlet pipe 101 are coaxial, the thicknesses of the ball passing turntable 5 and the debris separation turntable 8 are 1/2 of the diameter of the fuel ball 17, and the fuel ball 17 can directly fall into the debris separation hole 802 through the ball passing hole 501; at this point, the infeed bulb 101 is positioned between the lower bin outfeed bulb 1301 and the lower bin debris shunt 1302.
As shown in fig. 20, if the fuel ball 17 carries the fuel ball chip 18, the fuel ball chip 18 falls into the ball inlet pipe 101, the ball passing hole 501, and the chip separating hole 802 in this order together with the fuel ball.
b) As shown in fig. 17, the driving motor 16 rotates the worm shaft 14 in the forward direction, and the worm shaft 14 drives the debris separating turntable 8 to rotate in the direction of the nearest lower case debris shunt 1302, that is, to the right in the drawing, and the passing ball turntable 5 is stationary under the action of the cyclone 3. The follower rod 7 moves in the one-way follower groove 502 of the ball passing turntable 5 with the rotation of the chip separating turntable 8 under the action of the spring. The fuel ball 17 lifts off the debris separation aperture 802 by the slope (i.e., sloped surface) of the debris separation aperture 802.
As shown in fig. 21, if fuel ball chips 18 are present, the fuel ball chips 18 remain in the chip separating holes 802 and rotate with the chip separating turntable 8.
c) As shown in fig. 18, the chip separating turntable 8 rotates to a proper position, the driving motor 16 stops, at this time, the chip separating hole 802 is coaxial with the chip shunt tube 1302 of the lower case, the ball drop hole 801 is coaxial with the ball passing hole 501 of the ball passing turntable 5, the follower rod 7 moves by the distance of one-way follower groove 502 and abuts against the vertical surface of the one-way follower groove 502, and the fuel ball 17 enters the ball drop hole 801.
As shown in fig. 22, if fuel ball debris 18 is present in the debris separation aperture 802, the fuel ball debris 18 falls into the lower bin debris diverter aperture 1302.
d) As shown in fig. 19, the drive motor 16 rotates the worm shaft 14 in reverse, and the worm shaft 14 drives the debris separating dial 8 to rotate in the direction of the nearest lower case ball outlet 1301, i.e., to the left in the drawing. The follower rod 7 transmits rotation to the unidirectional follower groove 502, and transmits the rotation to the ball passing turntable 5 through the vertical surface of the unidirectional follower groove 502, so that the ball passing turntable 5 synchronously rotates to the left along with the debris separating turntable 8, the fuel ball 17 synchronously moves to the left along with the ball falling hole 801 until the ball falling hole 801 is coaxial with the lower box ball outlet pipe 1301, the driving motor 16 stops running, and the fuel ball 17 falls into the lower box ball outlet pipe 1301.
As shown in fig. 23, after the fuel ball chip 18 falls into the lower tank chip diversion hole 1302, the fuel ball 17 moves synchronously to the left following the ball falling hole 801 until the fuel ball 17 falls into the lower tank ball outlet pipe 1301.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims (7)

1. A dual channel debris separation choke, comprising:
the shell comprises an upper cover and a lower box body which are detachably connected, a ball inlet pipe for introducing fuel balls is arranged on the upper cover, a lower box body ball outlet pipe and a lower box body debris shunt pipe are arranged on the lower box body, a cavity is formed in the shell, and a ball passing turntable and a debris separating turntable are sequentially and rotatably connected in the cavity from top to bottom;
the ball passing rotary table is provided with a plurality of ball passing holes uniformly distributed in the longitudinal direction, the thickness of the ball passing rotary table is half of the diameter of the fuel ball, and at least one ball passing hole is communicated with the ball inlet pipe by rotating the ball passing rotary table;
the debris separation rotary table is longitudinally provided with a ball falling hole and a debris separation hole, at least one side surface of the debris separation rotary table in the rotation direction of the debris separation rotary table is an inclined surface, the opening area of the upper end of the debris separation hole is larger than that of the lower end of the debris separation rotary table, the thickness of the debris separation rotary table is half of the diameter of a fuel ball, the ball falling hole or the debris separation hole is communicated with any one ball passing hole or one lower box ball outlet pipe or one lower box debris shunt pipe by rotating the debris separation rotary table, the debris separation rotary table is connected and driven to rotate by a driving device, and the debris separation rotary table drives the ball passing rotary table to rotate by a driven device;
the driven device comprises at least two follow-up rods and a plurality of unidirectional follow-up grooves which are connected end to end, the unidirectional follow-up grooves are arranged around the edge of the lower surface of the ball turntable, the depth in each unidirectional follow-up groove increases progressively along the rotating direction of the ball turntable, the longitudinal section of each unidirectional follow-up groove is of a right-angled triangle structure, each unidirectional follow-up groove comprises a vertical surface and an inclined surface, the follow-up rods are arranged in the follow-up rod mounting grooves on the upper surface of the chip separation turntable, the lower ends of the follow-up rods are connected to the bottom ends of the follow-up rod mounting grooves through second springs, the upper ends of the follow-up rods are inserted into the unidirectional follow-up grooves, and the follow-up rods move in the unidirectional follow-up grooves along with the rotation of the chip separation turntable;
when the follower rod moves to the vertical surface of the unidirectional follower groove and then moves continuously, the follower rod drives the passing ball turntable and the debris separation turntable to move synchronously;
the driving device comprises a driving motor, a transmission mechanism and a worm shaft, wherein the output end of the driving motor is connected with the input end of the transmission mechanism, the output end of the transmission mechanism is connected with the worm shaft and drives the worm shaft to rotate, worm gear teeth meshed with the worm shaft are arranged on the periphery of the debris separation turntable, and the rotation of the worm shaft drives the debris separation turntable to rotate;
the upper cover lower terminal surface equipartition is equipped with a plurality of and revolves and hinder the ware mounting groove, and every revolves and hinder the ware mounting groove and install soon and hinder the ware soon, revolves and hinder the ware mounting groove and hold soon completely, and the ball carousel upper surface is opened and is had and revolves and hinder the ware groove that hinders the ware mounting groove quantity equally soon in the position corresponding with the ware mounting groove soon, when ball carousel rotatory to revolve and hinder the ware groove and revolve the position corresponding of hinder the ware mounting groove soon, revolve and hinder a part of ware and get into to revolve and hinder the ware groove soon from revolveing and hinder the ware mounting groove soon, revolve and hinder the degree of depth in ware mounting groove and be greater than the degree of depth that revolves and hinder the ware groove soon.
2. The dual-channel debris separation flow resistor of claim 1, wherein the ball passing turntable and the debris separation turntable are rotatably connected between the upper cover and the lower box through an intermediate shaft, the intermediate shaft is a stepped shaft, a first bearing is connected between the intermediate shaft and the upper cover, a second bearing is connected between the ball passing turntable and the debris separation turntable, the upper portion of the second bearing is connected with the ball passing turntable, the lower portion of the second bearing is connected with the debris separation turntable, and a third bearing is connected between the intermediate shaft and the lower box.
3. The dual channel debris separation flow resistor of claim 1, wherein the cyclone resistor is a gravity ball or a spring telescoping rod and the cyclone resistor slot is an arc-shaped slot;
when the cyclone resistor is a gravity ball, the depth of the cyclone resistor groove is smaller than half of the diameter of the gravity ball, and one part of the gravity ball falls into the cyclone resistor groove from the cyclone resistor mounting groove through self gravity;
when the rotary resistor is a spring telescopic rod, the spring telescopic rod comprises a first spring and a telescopic rod, one end of the telescopic rod is connected in the rotary resistor mounting groove through the first spring, and the other end of the telescopic rod stretches into the rotary resistor groove through the elastic force of the first spring.
4. The dual-channel debris separation flow resistor of claim 1, wherein two ball inlet pipes are arranged on the upper cover, the two ball inlet pipes are opposite to each other on the upper cover, and 6 cyclone mounting grooves are arranged;
the ball passing holes and the unidirectional follow-up grooves are respectively arranged on the ball passing turntable;
the chip separation turntable is characterized in that 2 chip separation holes and 2 chip separation holes are formed in the chip separation turntable, the positions of the two chip separation holes are symmetrical with respect to the center of the chip separation turntable, the two chip separation holes form an included angle of 60 degrees with the center line of the two chip separation holes, two follower rods are arranged, and the two follower rods are symmetrical with respect to the center of the chip separation turntable;
the lower box body is provided with two lower box body ball outlet pipes and two lower box body chip shunt pipes, the positions of the two lower box body ball outlet pipes correspond to the positions of the two ball falling holes, and the positions of the two lower box body chip shunt pipes correspond to the positions of the two chip separation holes.
5. The dual channel debris separation choke of claim 1, wherein a slope in each of the one-way follower slots is less than 1:20, the depth difference between the head end and the tail end in each one-way follow-up groove is more than 6mm.
6. The dual-channel debris separation choke of claim 1, wherein the worm shaft is disposed in the lower housing, a middle portion of the worm shaft is a worm portion, two sides of the worm portion are connected to the lower housing through a fourth bearing, and one end of the worm shaft is connected to an output end of the transmission mechanism.
7. A debris separation method for a dual path debris separation flow resistor, applied to the dual path debris separation flow resistor of any one of claims 1-6, comprising the steps of:
s1, fuel balls enter the double-channel debris separation flow choker through a ball inlet pipe of an upper cover and are stacked in the ball inlet pipe, in an initial state, ball passing holes of a ball passing turntable, debris separation holes of the debris separation turntable and the ball inlet pipe are coaxial, the ball inlet pipe is positioned between a ball outlet pipe of a lower box body and a debris shunt pipe of the lower box body, and fuel balls and fuel ball debris directly fall into the debris separation holes through the ball passing holes;
s2, a driving motor rotates positively to drive a worm shaft to rotate, the worm shaft drives a debris separation turntable to rotate towards the direction of the debris shunt pipe of the nearest lower box body, the ball passing turntable is static under the action of a rotary resistor, a follow-up rod moves in a one-way follow-up groove of the ball passing turntable along with the rotation of the debris separation turntable, fuel balls lift to leave a debris separation hole under the action of an inclined surface of the debris separation hole, and fuel ball debris follows rotation in the debris separation hole;
s3, when the chip separation rotary table rotates to the coaxial line of the chip separation hole and the chip shunt pipe of the lower box body, the driving motor stops running, at the moment, the ball falling hole and the ball passing hole of the ball passing rotary table are coaxial, the unidirectional follow-up rod moves by the distance of a unidirectional follow-up groove and is abutted to the vertical surface of the unidirectional follow-up groove, the fuel ball enters the ball falling hole, and the fuel ball chips fall into the chip shunt hole of the lower box body;
s4, the driving motor reversely drives the worm shaft to rotate, the worm shaft drives the debris separation rotary table to rotate towards the direction of the ball outlet pipe of the nearest lower box body, the unidirectional follow-up rod transmits rotation to the ball passing rotary table through the vertical face of the unidirectional follow-up groove, the ball passing rotary table is driven to synchronously rotate along with the debris separation rotary table, the fuel balls synchronously move along with the ball falling holes until the ball falling holes are coaxial with the ball outlet pipe of the lower box body, and the driving motor stops running, so that the fuel balls fall into the ball outlet pipe of the lower box body.
CN202210617089.0A 2022-06-01 2022-06-01 Binary channels piece separation flow resistor Active CN115069560B (en)

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CN213591123U (en) * 2020-11-07 2021-07-02 华能山东石岛湾核电有限公司 Near-isodiametric spherical flow pipeline fragment separation device
CN114005560A (en) * 2021-10-22 2022-02-01 华能核能技术研究院有限公司 High-temperature gas cooled reactor absorption ball falling limiting device and ball bed type high-temperature gas cooled reactor

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Publication number Priority date Publication date Assignee Title
DE2406936A1 (en) * 1964-07-01 1975-08-28 Hochtemperatur Reaktorbau Gmbh Device for sorting balls with damaged surfaces - esp for sorting balls of nuclear fuel
CN1042620A (en) * 1988-10-05 1990-05-30 英特阿托姆公司 The discharger of ball fuel nuclear reactor fuel element
CN1713305A (en) * 2005-07-29 2005-12-28 清华大学 Double-diameter ball breaking and selecting device of ball bed high-temperature air-cooled reactor
CN102982855A (en) * 2012-12-20 2013-03-20 清华大学 Device for isolating and conveying fuel spheres of sphere bed high temperature reactor
CN108726161A (en) * 2018-08-22 2018-11-02 清华大学 A kind of class valve for globular material
CN210647234U (en) * 2019-09-27 2020-06-02 宜黄县瑞峰工程塑料有限公司 Screening device for engineering plastics
CN111672859A (en) * 2020-05-28 2020-09-18 清华大学 Scrap collecting device for high-temperature gas cooled reactor
CN213591123U (en) * 2020-11-07 2021-07-02 华能山东石岛湾核电有限公司 Near-isodiametric spherical flow pipeline fragment separation device
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CN114005560A (en) * 2021-10-22 2022-02-01 华能核能技术研究院有限公司 High-temperature gas cooled reactor absorption ball falling limiting device and ball bed type high-temperature gas cooled reactor

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