CN115069560A - Dual-channel debris separation flow plug - Google Patents
Dual-channel debris separation flow plug Download PDFInfo
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- CN115069560A CN115069560A CN202210617089.0A CN202210617089A CN115069560A CN 115069560 A CN115069560 A CN 115069560A CN 202210617089 A CN202210617089 A CN 202210617089A CN 115069560 A CN115069560 A CN 115069560A
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- 238000000926 separation method Methods 0.000 title claims abstract description 151
- 239000000446 fuel Substances 0.000 claims abstract description 79
- 239000012634 fragment Substances 0.000 claims abstract description 25
- 230000009471 action Effects 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 19
- 230000005484 gravity Effects 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000009987 spinning Methods 0.000 claims description 13
- 230000009977 dual effect Effects 0.000 claims description 9
- 238000005461 lubrication Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000007787 solid Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 3
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002915 spent fuel radioactive waste Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
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Abstract
The invention provides a double-channel fragment separating spoiler, which comprises an upper cover, a ball passing rotary disc, a fragment separating rotary disc, 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 formed in the ball passing rotary disc, a ball falling hole and a fragment separating hole are formed in the fragment separating rotary disc, a lower box body is provided with a lower box body ball outlet pipe and a lower box body fragment flow dividing pipe, the fragment separating rotary disc is driven to rotate by the driving device, and the fragment separating rotary disc drives the ball passing rotary disc to rotate, so that the fuel balls and the fuel ball fragments are separated by mutual matching of the ball passing rotary disc and the fragment separating rotary disc. The invention adopts a double-channel structure, one current arrester can realize ball-unloading and current-arresting functions of the double-ball-channel, thereby reducing the action times of the whole system and the complexity of the system. The invention adopts a chip separation structure, can separate small-size chips from the fuel balls, and independently discharge and store the chips, thereby reducing the probability of blockage of the flow plug due to the chips and improving the running reliability of equipment.
Description
Technical Field
The invention relates to the technical field of reactor engineering, in particular to a dual-channel debris separation flow plug.
Background
The high-temperature gas cooled reactor fuel loading and unloading system performs the function of reactor non-stop refueling, is a key system for ensuring the long-term safe and stable operation of the high-temperature gas cooled reactor, and mainly performs the functions of loading fresh fuel into a reactor core, unloading spent fuel out of the reactor core, recycling fuel elements back to the reactor core and the like. The design of the high-temperature gas-cooled reactor demonstration engineering fuel loading and unloading system adopts a single-row and single-column oriented ordered conveying principle, and utilizes two modes of gravity and pneumatic conveying and loading and unloading of fuel elements, wherein the fuel elements are conveyed from top to bottom in a vertical or inclined pipeline by utilizing the favorable geometric shape of spherical fuel elements; the latter relies on a pneumatic lift system to effect bottom-up delivery of fuel elements. The flow plug is a key conveying and converting device of a fuel loading and unloading system of a demonstration project of a high-temperature gas cooled reactor nuclear power station, and is mainly used for executing a spherical element simplification conveying function and a gas flow blocking function. When the main circulation choke operates normally, the annual action frequency of the main circulation choke is more than million times, and a great blocking risk exists in the high-frequency operation process.
In order to solve the blockage problem of the flow plug, a double-channel debris separation flow plug which can solve the blockage problem of the flow plug caused by small fragments and realize double-channel ball passing and flow blocking functions is required to be designed.
Disclosure of Invention
The invention aims to provide a dual-channel debris separation flow plug, which can solve the problem of blockage of the flow plug caused by small fragments, realize the functions of ball passing and flow blocking of dual channels and improve the reliability of the flow plug.
An aspect of an embodiment of the present application provides a dual-channel debris separation spoiler, including: the device comprises a shell, a ball passing rotary disc and a fragment separating rotary disc.
The shell comprises an upper cover and a lower box body which are detachably connected, a ball inlet pipe for introducing a fuel ball is arranged on the upper cover, a ball outlet pipe of the lower box body and a chip flow dividing pipe of the lower box body are arranged on the lower box body, a cavity is formed in the shell, and the ball passing rotary table and the chip separating rotary table are sequentially and rotatably connected in the cavity from top to bottom.
The ball passing rotary table is uniformly provided with a plurality of ball passing holes in the longitudinal direction, the thickness of the ball passing rotary table is half of the diameter of a fuel ball, and at least one ball passing hole is communicated with the ball inlet pipe by rotating the ball passing rotary table.
The chip separation turntable is longitudinally provided with a ball falling hole and a chip separation hole, at least one side face in the chip separation hole in the rotation direction of the chip separation turntable is an inclined plane, the upper end opening area of the chip separation hole is larger than the lower end opening area, the thickness of the chip separation turntable is half of the diameter of a fuel ball, the ball falling hole or the chip separation hole is communicated with any ball passing hole or a ball outlet pipe of any lower box or a chip shunt pipe of the lower box by rotating the chip separation turntable, the chip separation turntable is connected with a driving device and is driven to rotate, and the chip separation turntable is driven to rotate by a driven device.
The invention adopts a double-channel structure, one current arrester can realize ball-unloading and current-arresting functions of the double-ball-channel, thereby reducing the action times of the whole system and the complexity of the system.
The invention adopts a chip separation structure, can separate small-size chips from the fuel balls, and independently discharge and store the chips, thereby reducing the probability of blockage of the flow plug due to the chips and improving the running reliability of equipment.
In some embodiments, the driven device comprises at least two follower rods and a plurality of one-way follower grooves connected end to end, the one-way follower grooves are arranged around the edge of the lower surface of the ball turntable, the depth in each one-way follower groove increases along the rotating direction of the ball turntable, the longitudinal section of each one-way follower groove is in a right-angled triangle structure, each one-way follower groove comprises a vertical surface and an inclined surface, the follower rods are arranged in the follower rod installation grooves in 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 installation grooves through second springs, the upper ends of the follower rods are inserted into the one-way follower grooves, and the follower rods move in the one-way follower grooves along with the rotation of the debris separation turntable.
When the follower rod moves to the vertical surface of the one-way follower groove and then continues to move, the follower rod drives the ball passing turntable and the fragment 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, the periphery of the debris separation turntable is provided with worm gear teeth meshed with the worm shaft, and the rotation of the worm shaft drives the debris separation turntable to rotate.
In some embodiments, the ball passing rotary table and the debris separation rotary table 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 rotary table and the debris separation rotary table, the upper portion of the second bearing is connected with the ball passing rotary table, the lower portion of the second bearing is connected with the debris separation rotary table, and a third bearing is connected between the intermediate shaft and the lower box body.
In some embodiments, a plurality of resistor rotating mounting grooves are uniformly distributed on the lower end surface of the upper cover, a resistor rotating is mounted in each resistor rotating mounting groove, the resistor rotating mounting grooves completely accommodate the resistors, resistor rotating grooves with the same number as the resistor rotating mounting grooves are formed in the upper surface of the ball passing rotary table at positions corresponding to the resistor rotating mounting grooves, when the ball passing rotary table rotates to the positions corresponding to the resistor rotating mounting grooves, a part of the resistors enter the resistor rotating grooves from the resistor rotating mounting grooves, and the depth of the resistor rotating mounting grooves is larger than that of the resistor rotating grooves.
In some embodiments, the rotation resistor is a gravity ball or spring telescopic rod, and the rotation resistor slot is an arc slot.
When the rotary resistor is a gravity ball, the depth of the rotary resistor groove is smaller than half of the diameter of the gravity ball, and one part of the gravity ball falls into the rotary resistor groove from the rotary resistor mounting groove through self gravity.
When the rotating 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 rotating resistor mounting groove through the first spring, and the other end of the telescopic rod extends into the rotating resistor groove through the elastic force of the first spring.
In some embodiments, on the upper cover, there are two ball inlets, the two ball inlets are opposite to each other at the upper cover, and there are 6 spinner mounting grooves.
On the ball-passing rotary table, 6 ball-passing holes and 6 one-way follow-up grooves are arranged.
On the piece separation carousel, ball hole and piece separation hole all are equipped with 2, and the central symmetry about the piece separation carousel is located to two ball holes that fall, and the central symmetry about the piece separation carousel is located to two piece separation holes, and the central line of two piece separation holes and two ball holes that fall is 60 contained angles, and the follower rod is equipped with two, and two follower rods are central symmetry about the piece separation carousel.
On the box down, lower box goes out the bulb and all is equipped with two with lower box piece shunt tubes, and two lower box go out the position of bulb and the position of two ball holes is corresponding, and the position of two lower box piece shunt tubes is corresponding with the position of two piece separation holes.
In some embodiments, the lower box body is detachably connected with the upper cover through bolts.
In some embodiments, the slope within 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 larger than 6 mm.
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 to the lower case through fourth bearings, and one end of the worm shaft is connected to the output end of the transmission mechanism.
In another aspect, an embodiment of the present invention provides a debris separation method for a dual-channel debris separation flow plug, including the following steps:
s1, enabling fuel balls to enter the dual-channel debris separation flow plug through a ball inlet pipe of the upper cover and to be accumulated in the ball inlet pipe, enabling a ball passing hole of the ball passing rotary disc, a debris separation hole of the debris separation rotary disc and the ball inlet pipe to be coaxial in an initial state, enabling the ball inlet pipe to be located between the ball outlet pipe of the lower box body and the debris flow dividing pipe of the lower box body, and enabling the fuel balls and the fuel ball debris to directly fall into the debris separation hole through the ball passing hole;
s2, the driving motor rotates forward to drive the worm shaft to rotate, the worm shaft drives the debris separation turntable to rotate towards the direction of the debris shunt pipe of the nearest lower box body, the ball passing turntable is stationary under the action of the rotation resistor, the follower rod moves in the one-way follower groove of the ball passing turntable along with the rotation of the debris separation turntable, the fuel ball is lifted under the action of the inclined surface of the debris separation hole to leave the debris separation hole, and the fuel ball debris rotates along with the debris in the debris separation hole;
s3, when the fragment separating turntable rotates to the position that the fragment separating hole is coaxial with the lower box fragment shunt pipe, the driving motor stops running, at the moment, the ball falling hole is coaxial with the ball passing hole of the ball passing turntable, the one-way follower rod moves for the distance of one-way follower groove and abuts against the vertical surface of the one-way follower groove, the fuel ball enters the ball falling hole, and the fuel ball fragments fall into the lower box fragment shunt hole;
s4, the driving motor rotates reversely to drive the worm shaft to rotate, the worm shaft drives the debris separation turntable to rotate towards the nearest direction of the lower box body ball outlet pipe, the one-way follower rod transmits the rotation to the ball passing turntable through the vertical surface of the one-way follower groove to drive the ball passing turntable to rotate synchronously with the debris separation turntable, the fuel ball moves synchronously with the ball falling hole until the ball falling hole is coaxial with the lower box body ball outlet pipe, the driving motor stops running, and the fuel ball falls into the lower box body ball outlet pipe.
The debris separation method can realize the functions of debris separation and falling ball flow resistance by adopting a single driving device, reduces the complexity of equipment and improves the economy of high-temperature gas cooled reactor demonstration engineering.
The invention has the beneficial effects that:
(1) the invention adopts a double-channel structure, one current arrester can realize ball-unloading and current-arresting functions of the double-ball-channel, thereby reducing the action times of the whole system and the complexity of the system.
(2) The invention adopts a chip separation structure, can separate small-size chips from the fuel balls, and independently discharge and store the chips, thereby reducing the probability of blockage of the flow plug due to the chips and improving the running reliability of equipment.
(3) The invention can realize the functions of debris separation and falling ball flow resistance by adopting a single driving device, reduces the complexity of equipment and improves the economy of the demonstration project of the high-temperature gas cooled reactor.
Additional aspects and advantages of the invention 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 invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent from and readily appreciated by reference to the following description of the embodiments taken in conjunction with the accompanying drawings,
wherein:
FIG. 1 is a schematic diagram of a dual path debris separation baffle according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the internal configuration of the dual path debris separation baffle in an embodiment of the present invention;
FIG. 3 is an exploded top perspective view of a two-pass debris separating spoiler in accordance with an embodiment of the present invention;
FIG. 4 is an exploded bottom perspective view of a two-pass debris separation baffle in accordance with an embodiment of the present invention;
FIG. 5 is a bottom view of the upper cover of FIG. 4;
FIG. 6 is a schematic top view of the ball-passing turntable shown in FIG. 3;
FIG. 7 is a schematic bottom view of the ball-passing turntable of FIG. 4;
FIG. 8 is a schematic top view of the chip separation rotor of FIG. 3;
FIG. 9 is a schematic bottom view of the crumb separating turntable of FIG. 4;
FIG. 10 is a cross-sectional view of the debris separating apertures in the debris separating disk of FIG. 8;
FIG. 11 is a schematic structural view of the lower case;
FIG. 12 is a schematic view of the configuration of the driving means in cooperation with the debris separation turntable;
FIG. 13 is a schematic view of the structure of the driving device engaged with the lower case;
FIG. 14 is a schematic view of the internal structure of the driving device engaged with the debris separation turntable;
FIG. 15 is a schematic view of the connection between the rotary resistor and the upper cover and the ball-passing turntable;
FIGS. 16-19 are schematic views illustrating the operation of the dual path debris separation baffle according to an embodiment of the present invention;
FIGS. 20-23 are schematic views illustrating the operation of the dual path debris separation spoiler in the embodiment of the present invention when debris is present;
reference numerals:
1-covering the upper cover; 101-a ball inlet pipe; 102-spinner mounting slots; 2-a first bearing; 3-a spinning resistor; 4-intermediate shaft; 5-passing a ball turntable; 501-passing a ball hole; 502-one-way follower groove; 503-spin resistor groove; 6-a second bearing; 7-a follower rod; 701-a second spring; 8-a chip separation carousel; 801-ball drop holes; 802-debris separation wells; 803-follower rod mounting groove; 9-a third bearing; 10-a transmission shaft end cover; 11-bearing retainer ring; 12-a fourth bearing; 13-lower box body; 1301-discharging a ball pipe from the lower box body; 1302-lower box debris shunt; 1303 — a second chamber; 14-a worm shaft; 15-a transmission; 16-a drive motor; 17-fuel spheres; 18-fuel sphere debris.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A two-pass debris separation choke in accordance with an embodiment of the present invention is described with reference to the accompanying drawings.
As shown in fig. 1 to 4, an embodiment of the present application provides a dual-path debris separation spoiler, including: the device comprises an upper cover 1, a ball passing rotary table 5, a chip separating rotary table 8, a lower box body 13 and a driving device.
The upper cover 1 and the lower box body 13 are detachably connected, and the detachable connection mode can be bolt connection. Furthermore, a plurality of bolt holes are arranged on the outer ring of the upper cover 1, bolt holes matched with the bolt holes of the upper cover 1 are arranged on 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 installation groove is formed in the center of the lower end face of the upper cover 1, 2-6 resistor rotation installation grooves 102 are formed in the third-order bearing installation groove and surround into a circle, the number of the resistor rotation installation grooves 102 in the embodiment is 6, a resistor rotation device 3 is arranged in each resistor rotation installation groove 102, and the resistor rotation device 3 can be completely accommodated in each resistor rotation installation groove 102. The lower terminal surface of upper cover 1 is equipped with two ball inlet holes, and two ball inlet holes are about the central symmetry of third-order bearing mounting groove, and two ball inlet hole positions are relative, are 180 and arrange, and the ball inlet hole is located the outside of round whirl resistor mounting groove 102. The upper end of the upper cover 1 is provided with 2 ball inlet pipes 101 for introducing fuel balls 17, and the ball inlet pipes 101 are communicated with the ball inlet holes. The lower surface of the upper cover 1 is also provided with a sealing groove for installing a sealing ring, and the sealing groove is positioned on the inner side of the circle of bolt holes.
As shown in fig. 11 and 13, the lower case 13 is a box-shaped 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 separation turntable 8, the intermediate shaft 4, etc. The center position in the first chamber has seted up the bearing mounting groove for install third bearing 9. 4 holes are distributed along the bearing mounting groove, two of the holes are lower box ball outlet holes, and the two lower box ball outlet holes are arranged symmetrically relative to the center of the bearing mounting groove. The other two holes are lower box debris shunting holes, and the two lower box debris shunting holes are symmetrically arranged around the center of the bearing mounting groove.
The central lines of the two lower box debris distributing holes and the central lines of the two lower box ball outlet holes form 60-degree included angles, and the two central lines form 60-degree included angles with the central lines of the two ball inlet holes of the upper cover 1.
The lower end of the lower box body 13 is provided with 2 lower box body ball outlet pipes 1301 and 2 lower box body debris shunt pipes 1302, the lower box body ball outlet pipes 1301 are communicated with the lower box body ball outlet holes, and the lower box body debris shunt pipes 1302 are communicated with the lower box body debris shunt holes.
In some embodiments, the lower housing outlet ball bore is a flared bore having an upper diameter 50% larger than the diameter of the fuel ball 17 and a lower diameter slightly larger than the diameter of the fuel ball 17 to prevent the fuel ball 17 from jamming.
The second chamber 1303 is formed in a through hole shape, and is used for mounting the worm shaft 14, the fourth bearing 12, the bearing retainer 11, and the like. The outer surfaces of the two ends of the second chamber 1303 are provided with threaded holes for mounting the transmission shaft end cover 10 and the transmission device 15.
In the first chamber, the ball passing turntable 5 is provided above the chip separating turntable 8. The ball passing rotary table 5 and the chip separating rotary table 8 are connected to the upper cover 1 and the lower box body 13 through the middle shaft 4.
Connect first bearing 2 between jackshaft 4 and the upper cover 1, first bearing 2 is angular contact ball bearing, installs in the bearing mounting groove of upper cover 1, overlaps on jackshaft 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 rotary table 5 is provided with a shaft hole and a key groove for connecting with the intermediate shaft 4. And a thrust bearing mounting groove is formed outside the central hole of the lower surface of the ball passing rotary disc 5 and is used for mounting a 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 separation turntable 8. The upper part of the second bearing 6 is arranged in a thrust bearing mounting groove on the ball passing rotary table 5 and is used for connecting the ball passing rotary table 5, and the lower part of the second bearing 6 is connected with a fragment separating rotary table 8. The second bearing 6 adopts an oil-free solid lubrication process.
The ball passing rotary disc 5 is uniformly provided with a circle of 6 ball passing holes 501 around the outer side of the thrust bearing mounting groove in the longitudinal direction, and the inner diameter of each ball passing hole 501 is slightly larger than the diameter of a fuel ball 17 and used for the fuel ball 17 to pass through. The distance between any two ball passing holes 501 in opposite positions is equal to the distance between two ball inlet holes. By rotating the ball passing rotary table 5, any two opposite ball passing holes 501 can be communicated with the two ball inlets 101, so that the fuel balls 17 fall into the ball passing holes 501 from the ball inlets 101.
In some embodiments, the upper surface of the ball-passing 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 one-way follow-up grooves 502 which are connected end to end, the depth in each one-way follow-up groove 502 increases progressively along the rotating direction (clockwise direction) of the ball turntable 5, the longitudinal section of each one-way follow-up groove 502 is of a right-angled triangle structure, and each one-way follow-up groove 502 comprises a vertical surface and an inclined surface. The slope within each one-way follower groove 502 is less than 1: 20, the depth difference between the head end and the tail end in each unidirectional following groove 502 is more than 6 mm. The ball passing hole 501 is located between the thrust bearing mounting groove and the one-way follower groove 502.
As shown in fig. 6 and 15, a circle of resistor rotating grooves 503 are formed on the upper surface of the ball passing rotary table 5 around the shaft hole at the center, the number of the resistor rotating grooves 503 is 2-6, and the number of the resistor rotating grooves 503 in the embodiment is 6. The position of the resistor spinner slot 503 corresponds to the position of the spinner mounting slot 102. The number of the resistor spinner grooves 503 is equal to the number of the resistor spinner mounting grooves 102, and the number of the resistor spinner mounting grooves 102 is equal to the number of the ball passing holes 501. The spin resistor slot 503 is located between the shaft hole and the ball passing hole 501. When the ball passing rotary disk 5 is rotated to a position where the spinning resistor groove 503 corresponds to the spinning resistor installation groove 102, a portion of the spinning resistor 3 enters from the spinning resistor installation groove 102 to the spinning resistor groove 503, and the depth of the spinning resistor installation groove 102 is greater than that of the spinning resistor groove 503. The effect of the resistor spinner 3 is: the spinning resistor 3 can provide a certain friction resistance when the ball passing rotary disc 5 generates movement or movement trend.
In some embodiments, the resistor 3 is a gravity ball or spring rod and the resistor slot 503 is a shallow arc slot.
When the spinner 3 is a gravity ball, the depth of the spinner slot 503 is less than half the diameter of the gravity ball. When the ball passing rotary table 5 rotates to the position where the rotary resistor groove 503 corresponds to the rotary resistor installation groove 102, the lower part of the gravity ball falls into the rotary resistor groove 503 from the rotary resistor installation groove 102 through self gravity, so that the ball passing rotary table 5 is slightly clamped, and a certain resistance is provided for the rotation of the ball passing rotary table 5.
When turning round the ware 3 and being the spring telescopic link, the spring telescopic link includes first spring and telescopic link, and the upper end of telescopic link is in turning round the ware mounting groove 102 through first spring coupling, and the lower extreme of telescopic link withstands the upper surface of ball carousel 5. When the ball passing rotary table 5 rotates to the position where the resistor rotating groove 503 corresponds to the resistor rotating groove 102, the lower end of the telescopic rod extends into the resistor rotating groove 503 through the elastic force of the first spring, so that the ball passing rotary table 5 is slightly clamped, and a certain resistance is provided for the rotation of the ball passing rotary table 5.
In some specific embodiments, the upper and lower surfaces of the ball-passing rotating disk 5 are subjected to molybdenum disulfide solid lubrication treatment.
As shown in fig. 8 to 10, the chip separation turntable 8 is a stepped disk shape, and the thickness of the disk surface is 1/2 of the diameter of the fuel ball 17. The center of the chip separation turntable 8 is provided with a shaft hole and a key groove for connecting with the intermediate shaft 4. The periphery of the debris separation turntable 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 gear mechanism.
In some specific embodiments, the surface of the worm gear is treated by a molybdenum disulfide solid lubrication process, so that reliable lubrication is ensured.
The chip separating turntable 8 is provided with 2 ball falling holes 801 and 2 chip separating holes 802 in the longitudinal direction, the positions of the two ball falling holes 801 are symmetrical about the center of the chip separating turntable 8 and are distributed at 180 degrees, and the positions of the two chip separating holes 802 are symmetrical about the center of the chip separating turntable 8 and are distributed at 180 degrees. The two debris separation holes 802 are at a 60 angle to the midline of the two ball drop holes 801. The distance between the two chip separation holes 802 is the same as the distance between any two opposite ball passing holes 501 in the ball passing turntable 5, the distance between the two ball falling holes 801 is also the same as the distance between any two opposite ball passing holes 501 in the ball passing turntable 5, and the fuel balls 17 fall from the ball passing holes 501 into the ball falling holes 801 or the chip separation turntable 8 through the relative rotation of the ball passing turntable 5 and the chip separation turntable 8. The diameter of the falling ball hole 801 is slightly larger than the diameter of the fuel ball 17.
The debris separation hole 802 is in the form of an inclined circular hole, the lower end of the debris separation hole 802 is a standard circular hole, the diameter is slightly larger than the diameter of the fuel ball 17, the upper end of the debris separation hole 802 is in the form of an inclined circular hole, the upper end opening area of the debris separation hole 802 is larger than the lower end opening area, one side of the debris separation hole 802 is an inclined surface, the aperture of the upper end opening end of the debris separation hole 802 is about 50% larger than the diameter of the fuel ball 17, debris can fall into the debris separation hole 802 conveniently, 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 debris separation hole 802 is in the form of a right trapezoid, 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 of the debris separation hole 802 upwards through the inclined surface in the rotation process of the debris separation turntable 8, and fuel ball 17 debris is left in the debris separation hole 802. By rotating the debris separation turntable 8, the two ball falling holes 801 or the two debris separation holes 802 are communicated with any two ball passing holes 501 which are opposite to each other, or are communicated with the two lower box body ball outlet pipes 1301 or the two lower box body debris shunt pipes 1302, so that the fuel balls 17 can fall into the ball falling holes 801 or the debris separation holes 802 from the ball passing holes 501 of the ball passing turntable 5, the fuel balls 17 fall into the lower box body ball outlet pipes 1301, and meanwhile, the debris falls into the lower box body debris shunt pipes 1302.
And a thrust bearing mounting groove is formed outside the shaft hole in the center of the upper surface of the chip separation turntable 8 and used for mounting the second bearing 6.
The upper surface of the chip separation turntable 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 separation turntable 8 and are distributed at 180 degrees. One follower rod 7 is installed in each follower rod installation groove 803, and the inside diameter of the follower rod installation groove 803 matches the outside diameter of the follower rod 7.
As shown in fig. 16, the follower rod 7 is rod-shaped, the 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 installation 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 is spherical. When the second spring 701 is compressed, the follower rod 7 is completely inside the follower rod mounting groove 803; when the second spring 701 is ejected, the upper portion of the follower rod 7 extends out of the follower rod installation groove 803 due to the elastic force of the second spring 701, and further extends into the one-way follower groove 502 to abut against the inclined surface of the one-way follower groove 502.
The follower rod 7 moves in the one-way follower groove 502 with the rotation of the debris separation turntable 8. When the debris separation turntable 8 moves anticlockwise, the follower rod 7 moves along the inclined surface of the one-way follower groove 502 in the direction away from the vertical plane, the ball passing turntable 5 does not move, and when the follower rod 7 moves to the rightmost end of the one-way follower groove 502, if the movement is continued, the next one-way follower groove 502 can be entered; when the chip separating turntable 8 moves clockwise, the follower rod 7 moves to the vertical plane of the one-way follower groove 502, and if the movement is continued, the follower rod 7 drives the ball passing turntable 5 and the chip separating turntable 8 to move synchronously due to the blocking of the vertical plane.
In some specific embodiments, the whole surface of the one-way follower rod 7 is treated by a molybdenum disulfide solid lubrication process, so that reliable sliding is ensured.
The intermediate shaft 4 is connected with the lower box body 13 through a third bearing 9. The third bearing 9 is an angular contact ball bearing, is mounted on a bearing mounting groove of the lower box body 13 and is sleeved on the 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 includes a driving motor 16, a transmission mechanism and a worm shaft 14, an output end of the driving motor 16 is connected to an input end of the transmission mechanism, an output end of the transmission mechanism is connected to 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 outer 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 counterclockwise.
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 body 13 through the fourth bearing 12, and one end of the worm shaft 14 is an interface connected with 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 driving motor 16 and the worm shaft 14, and comprises a speed reducer and a transmission device; the reducer can be a planet gear reducer or a harmonic reducer; the driver can be a permanent magnet driver or an electromagnetic driver and converts the dynamic seal into the static seal. The connection and driving of the transmission 15 with the drive motor 16 and the worm shaft 14 are well known and will not be described in detail here.
The fourth bearing 12 is an angular contact ball bearing, and is fitted around both ends of the worm shaft 14. Still be equipped with bearing fender ring 11 between fourth bearing 12 and the lower box 13, bearing fender ring 11 is ring structure for location installation fourth bearing 12 carries out size adjustment when being convenient for install.
One end of the second chamber 1303 of the lower box 13 is provided with a transmission device 15, and the other end is provided with a transmission shaft end cover 10. The transmission shaft end cover 10 is a flange plate, and bolt holes are formed in the flange plate. The bottom surface of the flange plate is provided with a boss for assembling the bearing baffle ring 11.
In some embodiments, the flange boss is externally provided with a groove for mounting the sealing ring.
The fuel ball and the fuel ball fragments are separated by the mutual matching of the ball passing rotary disc and the fragment separating rotary disc.
The work flow of the double-channel debris separation flow plug comprises the following steps:
a) as shown in fig. 16, the fuel ball 17 enters the two-channel debris separation flow plug 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 rotary disc 5, the debris separation hole 802 of the debris separation rotary disc 8 and the ball inlet pipe 101 are coaxial, the thicknesses of the ball passing rotary disc 5 and the debris separation rotary disc 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; the inlet bulb 101 is now positioned between the lower box outlet bulb 1301 and the lower box debris shunt 1302.
As shown in fig. 20, if the fuel ball 17 carries the fuel ball debris 18, the fuel ball debris 18 will fall into the inlet tube 101, the ball passing hole 501 and the debris separating hole 802 in sequence along with the fuel ball.
b) As shown in fig. 17, the driving motor 16 rotates forward to drive the worm shaft 14 to rotate, the worm shaft 14 drives the debris separating turntable 8 to rotate towards the direction of the nearest lower box debris shunt pipe 1302, i.e. to the right in the view, and the ball turntable 5 is stationary under the action of the rotation resistor 3. The follower rod 7 moves in the one-way follower groove 502 of the ball passing turntable 5 with the rotation of the debris separation turntable 8 under the action of a spring. The fuel ball 17 is lifted away from the debris separation hole 802 by the slope (i.e., the inclined surface) of the debris separation hole 802.
As shown in fig. 21, if fuel sphere debris 18 is present, the fuel sphere debris 18 will remain in the debris separation hole 802 and rotate with the debris separation disk 8.
c) As shown in fig. 18, the chip separating turntable 8 is rotated to a proper position, the driving motor 16 stops operating, at this time, the chip separating hole 802 is coaxial with the chip shunt pipe 1302 of the lower box body, the ball falling 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 the 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 falling hole 801.
As shown in fig. 22, if fuel sphere debris 18 is present within the debris separation hole 802, the fuel sphere debris 18 falls into the lower box debris diversion hole 1302.
d) As shown in fig. 19, the driving motor 16 rotates the worm shaft 14 in reverse, and the worm shaft 14 rotates the debris separation turntable 8 toward the nearest lower case outlet ball 1301, i.e., to the left in the drawing. The follower rod 7 transmits the rotation to the one-way follower groove 502 and transmits the rotation to the ball passing turntable 5 through the vertical surface of the one-way follower groove 502, so that the ball passing turntable 5 synchronously rotates towards the left direction of the view along with the debris separation turntable 8, the fuel ball 17 synchronously moves towards the left direction 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 chips 18 fall into the chip distributing hole 1302 of the lower case, the fuel ball 17 moves synchronously to the left along with the falling ball hole 801 until the fuel ball 17 falls into the ball outlet pipe 1301 of the lower case.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" and the like 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 present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A dual path debris separation choke, comprising:
the fuel ball separator comprises a shell, a ball passing rotating disc and a fragment separating rotating disc, wherein the shell comprises an upper cover and a lower box body which are detachably connected, a ball inlet pipe for introducing a fuel ball is arranged on the upper cover, a ball outlet pipe of the lower box body and a fragment flow dividing pipe of the lower box body are arranged on the lower box body, a cavity is formed in the shell, and the ball passing rotating disc and the fragment separating rotating disc are sequentially and rotatably connected in the cavity from top to bottom;
the ball passing rotary table is uniformly provided with a plurality of ball passing holes 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;
piece separation carousel, piece separation carousel has vertically seted up ball hole and piece separation hole of falling, at least one side in the rotation direction of piece separation carousel in the piece separation hole is the inclined plane, the upper end open area of piece separation hole is greater than lower extreme open area, the thickness of piece separation carousel is half of fuel ball diameter, make ball hole or piece separation hole and arbitrary one pass through the ball hole and lead to or go out the bulb or lower box piece shunt tubes with arbitrary one through rotatory piece separation carousel, the piece separation carousel passes through drive arrangement and connects and the drive is rotatory, the piece separation carousel passes through the driven device and drives the ball carousel rotation.
2. The dual path debris separating air dam of claim 1, wherein the follower unit comprises at least two follower rods and a plurality of one-way follower grooves connected end to end, the one-way follower grooves are disposed around the edge of the lower surface of the ball turntable, the depth of each one-way follower groove increases along the rotation direction of the ball turntable, the longitudinal section of each one-way follower groove is in a right triangle shape, each one-way follower groove comprises a vertical surface and an inclined surface, the follower rods are mounted in the follower rod mounting grooves on the upper surface of the debris separating 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 one-way follower grooves, and the follower rods move in the one-way follower grooves along with the rotation of the debris separating turntable;
when the follower rod moves to the vertical surface of the one-way follower groove and then continues to move, the follower rod drives the ball passing turntable and the fragment separating turntable to move synchronously.
3. The dual-channel debris separation spoiler of claim 1, wherein the driving device comprises a driving motor, a transmission mechanism and a worm shaft, an output end of the driving motor is connected to an input end of the transmission mechanism, an output end of the transmission mechanism is connected to the worm shaft and drives the worm shaft to rotate, the debris separation turntable is provided at an outer circumference thereof with worm gear teeth engaged with the worm shaft, and rotation of the worm shaft drives the debris separation turntable to rotate.
4. The dual-channel debris separation spoiler of claim 1, wherein the ball passing rotating disc and the debris separation rotating disc 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 rotating disc and the debris separation rotating disc, the upper portion of the second bearing is connected with the ball passing rotating disc, the lower portion of the second bearing is connected with the debris separation rotating disc, and a third bearing is connected between the intermediate shaft and the lower box body.
5. The dual-channel debris separating spoiler as claimed in any one of claims 1 to 4, wherein a plurality of vortex breaker mounting grooves are uniformly formed in the lower end surface of the upper cover, a vortex breaker is mounted in each vortex breaker mounting groove, each vortex breaker mounting groove completely accommodates a vortex breaker, the upper surface of the ball passing turntable is provided with a number of vortex breaker grooves equal to the number of the vortex breaker mounting grooves at positions corresponding to the vortex breaker mounting grooves, when the ball passing turntable rotates to positions corresponding to the vortex breaker grooves and the vortex breaker mounting grooves, a part of the vortex breaker enters the vortex breaker grooves from the vortex breaker mounting grooves, and the depth of the vortex breaker mounting grooves is greater than that of the vortex breaker grooves.
6. The dual path debris separation spoiler of claim 5, wherein the spoiler is a gravity ball or a spring telescoping rod, and the spoiler slot is an arcuate slot;
when the spinning resistor is a gravity ball, the depth of the spinning resistor groove is less than half of the diameter of the gravity ball, and a part of the gravity ball falls into the spinning resistor groove from the spinning resistor installation groove through self gravity;
when the rotating 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 rotating resistor mounting groove through the first spring, and the other end of the telescopic rod extends into the rotating resistor groove through the elastic force of the first spring.
7. The two-pass debris separation spoiler according to claim 5, wherein, on the upper cover, there are two ball inlets, two ball inlets are oppositely positioned on the upper cover, and there are 6 vortex breaker mounting grooves;
6 ball passing holes and one-way follow-up grooves are formed in the ball passing turntable;
the chip separation turntable is provided with 2 ball falling holes and 2 chip separation holes, the positions of the two ball 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 ball falling holes form an included angle of 60 degrees, two follower rods are arranged, and the two follower rods are symmetrical about the center of the chip separation turntable;
on the box down, lower box goes out the bulb and all is equipped with two with lower box piece shunt tubes, and two lower box go out the position of bulb and the position of two ball holes is corresponding, and the position of two lower box piece shunt tubes is corresponding with the position of two piece separation holes.
8. The two-pass debris separation spoiler of claim 2, wherein a slope within each one-way follower groove is less than 1: and 20, the depth difference between the head end and the tail end in each one-way follow-up groove is larger than 6 mm.
9. The dual-channel debris separation spoiler of claim 3, wherein the worm shaft is disposed in the lower case, the middle of the worm shaft is a worm part, two sides of the worm part are connected to the lower case through fourth bearings, and one end of the worm shaft is connected to an output end of the transmission mechanism.
10. A debris separation method of the dual path debris separation spoiler as claimed in any one of claims 1 to 9, comprising the steps of:
s1, enabling fuel balls to enter the dual-channel debris separation flow plug through a ball inlet pipe of the upper cover and to be accumulated in the ball inlet pipe, enabling a ball passing hole of the ball passing rotary disc, a debris separation hole of the debris separation rotary disc and the ball inlet pipe to be coaxial in an initial state, enabling the ball inlet pipe to be located between the ball outlet pipe of the lower box body and the debris flow dividing pipe of the lower box body, and enabling the fuel balls and the fuel ball debris to directly fall into the debris separation hole through the ball passing hole;
s2, the driving motor rotates forward to drive the worm shaft to rotate, the worm shaft drives the debris separation turntable to rotate towards the direction of the debris shunt pipe of the nearest lower box body, the ball passing turntable is stationary under the action of the rotation resistor, the follower rod moves in the one-way follower groove of the ball passing turntable along with the rotation of the debris separation turntable, the fuel ball is lifted under the action of the inclined surface of the debris separation hole to leave the debris separation hole, and the fuel ball debris rotates along with the debris in the debris separation hole;
s3, when the scrap separating turntable rotates to the point that the scrap separating hole is coaxial with the scrap shunt pipe of the lower box body, the driving motor stops running, at the moment, the ball falling hole is coaxial with the ball passing hole of the ball passing turntable, the one-way follower rod moves for the distance of one-way follower groove and abuts against the vertical surface of the one-way follower groove, the fuel ball enters the ball falling hole, and the fuel ball scraps fall into the scrap shunt hole of the lower box body;
s4, the driving motor rotates reversely to drive the worm shaft to rotate, the worm shaft drives the debris separation turntable to rotate towards the nearest direction of the lower box body ball outlet pipe, the one-way follower rod transmits the rotation to the ball passing turntable through the vertical surface of the one-way follower groove to drive the ball passing turntable to rotate synchronously with the debris separation turntable, the fuel ball moves synchronously with the ball falling hole until the ball falling hole is coaxial with the lower box body ball outlet pipe, the driving motor stops running, and the fuel ball falls into the lower box body ball outlet pipe.
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| CN202210617089.0A CN115069560B (en) | 2022-06-01 | 2022-06-01 | Binary channels piece separation flow resistor |
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| CN202210617089.0A CN115069560B (en) | 2022-06-01 | 2022-06-01 | Binary channels piece separation flow resistor |
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| CN115069560B (en) | 2023-10-27 |
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