CN114974632B

CN114974632B - Flow control

Info

Publication number: CN114974632B
Application number: CN202210758211.6A
Authority: CN
Inventors: 许杰; 雷伟俊; 孟东旺; 张振鲁; 汪景新; 肖三平; 王翥
Original assignee: Huaneng Nuclear Energy Technology Research Institute Co Ltd
Current assignee: Huaneng Nuclear Energy Technology Research Institute Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2024-12-31
Anticipated expiration: 2042-06-30
Also published as: CN114974632A

Abstract

The baffle provided by the embodiment of the present invention comprises a lining component and a rotating component. The lining component has a goal entrance, a ball outlet, a first hole and a first opening connected to the first hole, and a Tesla valve-type flow channel is provided on the hole wall of the first hole to connect the goal entrance and the ball outlet. The rotating component is rotatably arranged in the first hole around a rotation axis. The rotating component has a ball receiving cup, and the rotating component can rotate between a first state in which the ball receiving cup is connected to the goal entrance and a second state in which the ball receiving cup is connected to the ball outlet, so as to transport the fuel element from the goal entrance to the ball outlet. The baffle of the embodiment of the present invention has the advantages of low failure rate and long service life.

Description

Flow choking device

Technical Field

The invention belongs to the technical field of flow chokes, and particularly relates to a flow choking device.

Background

The fuel loading and unloading system of the high-temperature gas cooled reactor mainly utilizes the pneumatic conveying principle to realize the cyclic lifting of fuel elements in the system, wherein a flow blocking device is an important device in the fuel loading and unloading system.

The two ends of the flow choker are respectively connected with the gravity ball falling pipe section and the gas compression device, and the flow choker is used for conveying the fuel element and simultaneously providing a reliable flow choking function so as to ensure that the pressure head provided by the gas compression device does not influence the reactor core.

The rotating part and the lining part of the air flow resistor are matched in a tiny clearance mode, under the conditions of long-term operation, bearing clearance change and the like, the contact friction between the rotor and the lining is matched, so that the fit clearance is increased, even eccentric rotation can occur under the action of pressure difference at two sides, the flow blocking effect is weakened, and normal pneumatic conveying is affected.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent.

Therefore, the embodiment of the invention provides the flow resistor, which has the advantages of low failure rate, long service life and the like.

The air dam of the embodiment of the invention comprises a lining component and a rotating component. The lining part is provided with a ball inlet, a ball outlet, a first hole and a first opening communicated with the first hole, and a Tesla valve type runner is arranged on the wall of the first hole so as to be communicated with the ball inlet and the ball outlet. The rotating member is rotatably disposed in the first hole about a rotation axis. The rotating component is provided with a ball receiving cup, and can rotate between a first state that the ball receiving cup is communicated with the ball inlet and a second state that the ball receiving cup is communicated with the ball outlet so as to convey the fuel element from the ball inlet to the ball outlet.

In some embodiments, the inner cylindrical surface of the lining component takes a vertical plane where the center lines of the ball inlet and the ball outlet are located as a center line, and the inner cylindrical surfaces on two sides of the vertical plane are symmetrically provided with tesla valve type flow passages.

In some embodiments, the tesla valve flow channel is an open channel structure.

In some embodiments, the rotating member includes a turntable, and the ball cup is provided on an outer circumferential surface of the turntable to receive the fuel element.

In some embodiments, the liner member has first and second end surfaces opposite in the direction of extension of the axis of rotation thereof, the second end surface having a first debris flow aperture disposed thereon,

The turntable is provided with a third end face and a fourth end face which are opposite in the extending direction of the rotating axis, the fourth end face is provided with a second chip guiding hole, one end of the second chip guiding hole is communicated with the ball receiving cup, and the other end of the second chip guiding hole is connected with the first chip guiding hole to guide chips out.

In some embodiments, a first sealing portion is disposed on the fourth end surface of the turntable, a second sealing portion is disposed at the bottom of the first hole, the first sealing portion and the second sealing portion are both annular, and the first sealing portion is in sealing fit with the second sealing portion.

In some embodiments, the first seal portion includes a plurality of first annular seal projections spaced apart along a radial direction of the turntable, adjacent the first annular seal projections defining a first annular groove;

The second sealing part comprises a plurality of second annular sealing bulges, the second annular sealing bulges are arranged at intervals along the radial direction of the first hole, and a second annular groove is defined by adjacent second annular sealing bulges;

The first annular sealing protrusion is inserted into the second annular groove, and the second annular sealing protrusion is inserted into the first annular groove.

In some embodiments, the rotating member further includes a rotating shaft, and one end of the rotating shaft is connected to the third end surface of the turntable, so as to drive the rotating member to rotate.

In some embodiments, the other end of the shaft is provided with a spline, and the other end of the shaft is used for being connected with a driving device.

In some embodiments, the first end surface is provided with a plurality of threaded holes, and the plurality of threaded holes are distributed at intervals along the circumferential direction of the rotating component so as to fix the lining member.

Drawings

FIG. 1 is a schematic view of a liner component of a spoiler according to an embodiment of the invention;

FIG. 2 is a schematic view of a rotating member of a spoiler according to an embodiment of the invention;

FIG. 3 is a schematic view of an assembly of a spoiler according to an embodiment of the invention;

FIG. 4 is a schematic illustration of a Tesla valve flow passage in a flow resistor according to an embodiment of the present invention.

Reference numerals:

100. A lining member 1001, a first end face 1002, a second end face;

200. A rotating member;

300. Tesla valve-type flow passage;

1. A ball inlet; 2, ball outlet, 3, first hole, 301, first opening, 4, ball receiving cup, 5, turntable, 501, third end face, 502, fourth end face, 503, second chip guiding hole, 6, first chip guiding hole, 7, first sealing part, 701, first annular sealing bulge, 702, first annular groove, 8, second sealing part, 801, second annular sealing bulge, 802, second annular groove, 9, rotating shaft, 901, spline, 10, threaded hole.

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 by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

A choke provided by an embodiment of the present invention is described below with reference to fig. 1-4.

The air dam embodying the present invention includes an inner liner member 100 and a rotating member 200.

As shown in fig. 1 to 4, the lining member 100 has a ball inlet 1, a ball outlet 2, a first hole 3, and a first opening 301 communicating with the first hole 3, and a tesla valve type flow passage is provided on the wall of the first hole 3 to communicate the ball inlet 1 and the ball outlet 2. The rotating member 200 is rotatably provided in the first hole 3 about a rotation axis. The rotating member 200 has a ball receiving cup 4, and the rotating member 200 is rotatable between a first state in which the ball receiving cup 4 communicates with the ball inlet 1 and a second state in which the ball receiving cup 4 communicates with the ball outlet 2 to convey the fuel ball from the ball inlet 1 to the ball outlet 2.

According to the flow choker, the rotating part is arranged, the fuel element enters the ball receiving cup through the ball inlet, then the rotating part rotates for a preset angle, so that the rotating part is switched from a first state that the ball receiving cup is communicated with the ball inlet to a second state that the ball receiving cup is communicated with the ball outlet, and then the fuel element flows out of the ball receiving cup through the ball outlet.

The flow resistor of the embodiment of the invention is provided with the Tesla valve type flow passage on the wall of the first hole 3 of the lining part 100 so as to be communicated with the ball inlet 1 and the ball outlet 2, so that when gas flows from the ball inlet 1 to the ball outlet 2, the gas flows to the ball outlet 2 through the Tesla valve type flow passage.

The choke pressure applied to the outer side of the rotary member 200 and the inner side of the lining member 100 is greatly reduced as compared with the related art choke, and the problem of the increase of the fit clearance between the lining member 100 and the rotary member 200 due to the long-term running wear of the choke can be prevented. Meanwhile, the Tesla valve type runner has excellent flow resistance. Therefore, the air dam of the embodiment of the invention reduces the air dam pressure between the lining part 100 and the rotating part 200 and prolongs the service life of the air dam of the embodiment of the invention while not affecting the air dam effect.

Therefore, the air dam provided by the embodiment of the invention has the advantages of low failure rate, long service life and the like.

In some embodiments, the inner cylindrical surface of the lining member 100 is centered on a vertical plane where the center lines of the ball inlet 1 and the ball outlet 2 are located, and the inner cylindrical surfaces on both sides of the vertical plane are symmetrically provided with tesla valve type flow passages 300.

Alternatively, tesla valve flow channel 300 is an open channel type structure.

As shown in fig. 4, one end of the tesla valve type flow passage 300 is connected with the ball inlet 1, and the other end of the tesla valve type flow passage 300 is connected with the ball outlet 2, so that a flow blocking effect is generated on the gas flowing from the ball inlet 1 to the ball outlet 2, and further, the flow blocking effect of the flow blocking device in the embodiment of the invention is greatly improved.

According to the embodiment of the invention, the Tesla valve type flow passages capable of communicating the ball inlet 1 and the ball outlet 2 are symmetrically arranged on the inner cylindrical surface of the lining part 100, so that the flow blocking effect of the flow blocking device is greatly improved, and meanwhile, the flow blocking pressure between the lining part 100 and the rotating part 200 can be reduced, and the service life of the flow blocking device is prolonged.

In addition, the lining part 100 and the rotating part 200 can be in clearance fit, so that the rotating part 200 can rotate better in the first hole 3 of the lining part 100 while the invention has a certain flow blocking effect, and fuel elements can be transported to the ball outlet 2 from the ball inlet 1 in a rotating way, thereby greatly improving the working efficiency of the flow blocking device in the embodiment of the invention.

In some embodiments, the rotating member 200 includes a turntable 5, and a ball cup 4 is provided on an outer circumferential surface of the turntable 5 to receive the fuel element.

In the first state, the ball receiving cup 4 is communicated with the ball inlet 1 so as to receive the fuel elements conveyed by the upper-level pipeline. When the rotation part 200 is switched from the first state to the second state through rotation, the ball receiving cup 4 is communicated with the ball outlet 2, and the fuel element flows into the ball outlet 2 from the ball receiving cup and is further conveyed to the next-stage pipeline.

According to the choke provided by the embodiment of the invention, the ball receiving cup 4 is arranged on the peripheral surface of the turntable 5, so that the working efficiency of transporting fuel elements of the choke is greatly improved.

In some embodiments, the liner component 100 has first and second end surfaces 1001, 1002 opposite in the direction of extension of its axis of rotation, the second end surface 1002 being provided with a first debris flow aperture 6,

The turntable 5 has a third end surface 501 and a fourth end surface 502 which are opposite in the extending direction of the rotation axis thereof, the fourth end surface 502 being provided with a second chip deflector hole 503, one end of the second chip deflector hole 503 being in communication with the ball catching groove, and the other end of the second chip deflector hole 503 being connected to the first chip deflector hole 6 to guide chips.

The choke of the embodiment of the invention can discharge the scraps generated by the fuel element in the ball receiving cup 4 by arranging the second scraps deflector hole 503 on the fourth end surface 502 of the turntable 5 to communicate the ball receiving hole with the first scraps deflector hole 6. The problem that the choke is blocked due to the fact that scraps enter other parts of the choke is prevented, the fault rate of the choke in the embodiment of the invention is greatly reduced, and the stability of the choke in the embodiment of the invention is further improved.

In some embodiments, the fourth end surface 502 of the turntable 5 is provided with a first sealing portion 7, the bottom of the first hole 3 is provided with a second sealing portion 8, the first sealing portion 7 and the second sealing portion 8 are both annular, and the first sealing portion 7 is in sealing fit with the second sealing portion 8.

According to the choke provided by the embodiment of the invention, the first sealing part 7 and the second sealing part 8 are arranged, and the first sealing part 7 and the second sealing part 8 are matched, so that a certain choke effect can be achieved, and high-pressure air flow in the ball outlet direction can be prevented from flowing to the ball inlet direction through the space between the fourth end surface 502 of the turntable 5 and the bottom surface of the first hole 3. Further, the flow blocking effect of the flow blocking device is greatly improved.

In some embodiments, the first sealing portion 7 comprises a plurality of first annular sealing projections 701, the plurality of first annular sealing projections 701 being arranged at intervals along the radial direction of the turntable 5, adjacent first annular sealing projections 701 defining a first annular groove 702.

The second sealing portion 8 includes a plurality of second annular sealing projections 801, the plurality of second annular sealing projections 801 being disposed at intervals in the radial direction of the first bore 3, adjacent second annular sealing projections 801 defining a second annular groove 802.

The first annular sealing projection 701 is inserted into the second annular groove 802, and the second annular sealing projection 801 is inserted into the first annular groove 702.

According to the embodiment of the invention, the first annular sealing protrusion 701 is matched with the second annular groove 802, and the first annular groove 702 is matched with the second annular sealing protrusion 801, so that high-pressure air flow in the ball outlet direction can be prevented from flowing to the ball inlet direction through the space between the fourth end surface 502 of the turntable 5 and the bottom surface of the first hole 3, and the flow blocking effect of the flow blocking device is greatly improved.

In some embodiments, the rotating member 200 further includes a rotating shaft 9, where one end of the rotating shaft 9 is connected to the third end surface 501 of the turntable 5, so as to drive the rotating member 200 to rotate.

According to the flow choking device, the rotating shaft 9 is arranged, so that the rotating part 200 can be switched between a first state that the ball receiving cup 4 is connected with the ball inlet 1 and a second state that the ball receiving cup 4 is connected with the ball outlet 2. The working efficiency of the flow choking device for conveying the fuel elements is greatly improved.

Optionally, the other end of the rotating shaft 9 is provided with a spline 901, and the other end of the rotating shaft 9 is used for being connected with a driving device.

According to the choke provided by the embodiment of the invention, the spline 901 is arranged at the other end of the rotating shaft 9, so that the rotating shaft 9 can be better connected with the driving device, the risk of slipping of the rotating shaft 9 and the driving device can be reduced, and the stability of the choke provided by the embodiment of the invention is greatly improved.

In some embodiments, the first end surface 1001 is provided with a plurality of threaded holes 10, and the plurality of threaded holes 10 are spaced apart along the circumference of the rotary member 200 to secure the liner.

The air dam of the embodiment of the invention can be better installed on a required fuel element conveying pipeline according to the requirement by arranging the plurality of threaded holes 10 on the first end face 1001, so that the capability of adapting to different environments of the embodiment of the invention is greatly improved.

In the description of the present invention, 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 invention 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 invention.

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 invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, 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, mechanically connected, electrically connected, or communicable with each other, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interactive relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, 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 invention. 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 invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, 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 invention.

Claims

1. A flow blocker, comprising:

A lining component, wherein the lining component has a ball inlet, a ball outlet, a first hole, and a first opening connected to the first hole, and a Tesla valve flow channel is provided on a hole wall of the first hole to connect the ball inlet and the ball outlet;

a rotating component, the rotating component being rotatably disposed in the first hole around a rotating axis;

The rotating component has a ball receiving cup, and the rotating component can rotate between a first state in which the ball receiving cup is connected to the ball inlet and a second state in which the ball receiving cup is connected to the ball outlet, so as to transport the fuel element from the ball inlet to the ball outlet;

The rotating component includes a rotating disk, and the ball receiving cup is arranged on the outer peripheral surface of the rotating disk to receive the fuel element;

The lining component has a first end face and a second end face opposite to each other in the extension direction of its rotation axis, and a first debris diversion hole is provided on the second end face. The turntable has a third end face and a fourth end face opposite to each other in the extension direction of its rotation axis, and a second debris diversion hole is provided on the fourth end face. One end of the second debris diversion hole is connected to the ball receiving cup, and the other end of the second debris diversion hole is connected to the first debris diversion hole to divert debris.

2. The spoiler according to claim 1 is characterized in that the inner cylindrical surface of the lining component takes the vertical plane where the center lines of the ball inlet and the ball outlet are located as the center line, and the inner cylindrical surfaces on both sides of the vertical plane are symmetrically opened with Tesla valve-type flow channels.

3. A flow spoiler according to claim 2, characterized in that the Tesla valve flow channel is an open groove structure.

4. The spoiler according to claim 1 is characterized in that a first sealing portion is provided on the fourth end face of the rotating disk, a second sealing portion is provided at the bottom of the first hole, the first sealing portion and the second sealing portion are both annular, and the first sealing portion is sealed and matched with the second sealing portion.

5. The spoiler according to claim 4, characterized in that the first sealing portion comprises a plurality of first annular sealing protrusions, the plurality of first annular sealing protrusions are arranged at intervals along the radial direction of the rotating disk, and adjacent first annular sealing protrusions define a first annular groove;

The second sealing portion comprises a plurality of second annular sealing protrusions, wherein the plurality of second annular sealing protrusions are arranged at intervals along the radial direction of the first hole, and adjacent second annular sealing protrusions define a second annular groove;

6 . The spoiler according to claim 1 , wherein the rotating component further comprises a rotating shaft, one end of which is connected to the third end surface of the rotating disk to drive the rotating component to rotate.

7. The spoiler according to claim 6, characterized in that a spline is provided at the other end of the rotating shaft, and the other end of the rotating shaft is used to be connected to a driving device.

8 . The spoiler according to claim 1 , wherein a plurality of threaded holes are provided on the first end surface, and the plurality of threaded holes are distributed at intervals along the circumference of the rotating component to fix the lining component.