Air flow guiding device in ultrahigh pressure cylinder pipe

Abstract

The invention discloses an air flow guiding device in an ultrahigh-pressure cylinder pipe. The air flow guiding device comprises a connecting assembly. The moving assembly is arranged on the inner wall of the connecting assembly and comprises a fixed part, a sliding part arranged on one side of the fixed part and a rotating part arranged on one side of the sliding part; when the fixed part moves along the inner wall of the connecting assembly, the rotating part rotates to drive the sliding part to slide. When steam flows in, the flow speed of the steam is too high, the stirring disc is pushed to rotate, the sliding block is driven to slide along the arc-shaped block and extrudes the elastic piece, the flow dividing block moves, the diameter of the vent hole is increased, and therefore the airflow passing ability is improved, and meanwhile when the flow is reduced, the rebound force of the elastic piece pushes the sliding block and the stirring disc to reset, so that the flow is dynamically adapted to stabilize the airflow; and the effects of current stabilization and pressure control are achieved.

Description

Technical Field

[0001] The present invention relates to the field of airflow guidance, in particular to an airflow guidance device in an ultra-high pressure cylinder tube. Background Art

[0002] In the steam turbine system, thermal power units need to adjust the power generation capacity in real time according to the load demand of the power grid. When the units are peaking and increasing the load, a large amount of high-temperature and high-pressure steam needs to be introduced quickly. At this time, the steam flow rate in the ultra-high-pressure cylinder tube is extremely fast, which drives the steam turbine to operate at high speed to increase power generation. During the load reduction or shutdown stage, the steam flow rate is significantly reduced.

[0003] At the same time, in the steam system of the steam turbine, in order to prevent the high-pressure steam from directly rushing into the cylinder pipe and forming turbulence, resulting in energy waste, a funnel-shaped air flow guide device is usually set in the ultra-high-pressure cylinder pipe to collect steam, thereby increasing the intermediate flow velocity of the steam, so that the steam can pass through the pipeline quickly and reduce the energy loss of steam flow.

[0004] However, existing airflow guiding devices are usually fixed in the pipeline, which makes it difficult for traditional airflow guiding devices to adjust their applicability according to different steam flow rates when adjusting the power generation power. For example, when the steam flow rate is too large, the traditional airflow guiding device cannot adjust the size of the vent. At this time, the traditional airflow guiding device will block the flow of steam, which will cause the local pressure of the cylinder pipe to increase abnormally, threatening the safety of the equipment. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to provide an airflow guiding device that can adjust its applicability according to different steam flow rates.

[0006] The above technical problem is solved by the following technical solution: The present invention proposes an ultra-high pressure cylinder tube airflow guiding device, which includes a connecting assembly; and

[0007] The moving component arranged on the inner wall of the connecting component includes a fixing component, a sliding component arranged on one side of the fixing component, and a rotating component arranged on one side of the sliding component; wherein,

[0008] When the fixing member moves along the inner wall of the connecting assembly, the rotating member rotates to drive the sliding member to slide.

[0009] In a preferred embodiment of the airflow guiding device in the ultra-high pressure cylinder tube of the present invention: the connecting assembly includes a flange tube, a fixing block provided on the inner wall of the flange tube, and an inclined groove provided on the inner wall of the fixing block; wherein,

[0010] One side of the rotating member is slidably connected to the inner wall of the inclined groove. When the rotating member continues to move along the inclined groove, the rotating member continuously drives the sliding member to slide.

[0011] In a preferred embodiment of the air flow guiding device in the ultra-high pressure cylinder tube of the present invention: the fixing part includes a disc, an arc-shaped hole extending through one side of the disc, an arc-shaped block arranged on one side of the arc-shaped hole, and a cylinder arranged on one side of the disc.

[0012] In a preferred embodiment of the airflow guiding device in the ultra-high pressure cylinder tube of the present invention: a sliding opening is opened on one side of the disc, one side of the fixed block is slidably connected to the outer wall of the sliding opening, and the outer wall of the disc is slidably connected to the inner wall of the flange tube.

[0013] In a preferred embodiment of the airflow guiding device in the ultra-high pressure cylinder tube of the present invention: the sliding member includes a diverter block, a rectangular groove arranged on one side of the diverter block, and a rectangular block arranged on one side of the diverter block.

[0014] In a preferred embodiment of the airflow guiding device in the ultra-high pressure cylinder tube of the present invention: the outer wall of the sliding member is slidably connected to the outer wall of the diverter block, and the outer wall of the cylinder is slidably connected to the inner wall of the rectangular groove.

[0015] In a preferred embodiment of the air flow guiding device in the ultra-high pressure cylinder tube of the present invention: the rotating part includes a dial, a slider arranged on one side of the dial, a limiting groove arranged on one side of the dial, and a protrusion arranged on the top of the dial.

[0016] In a preferred embodiment of the airflow guiding device in the ultra-high pressure cylinder tube of the present invention: the outer wall of the diverter block contacts one side of the dial, and the outer wall of the rectangular block is slidably connected to the inner wall of the limiting groove.

[0017] In a preferred embodiment of the airflow guiding device in the ultra-high pressure cylinder tube of the present invention, the outer wall of the dial is slidably connected to the outer wall of the fixed block, and the outer wall of the protrusion is slidably connected to the inner wall of the inclined groove.

[0018] In a preferred embodiment of the air flow guiding device in the ultra-high pressure cylinder tube of the present invention: one side of the slider is engaged with the outer wall of the arc block, the outer wall of the arc block is provided with an elastic part, the other side of the elastic part is connected to the outer wall of the fixing part, and the outer wall of the fixing part is provided with a protective plate.

[0019] The beneficial effect of the present invention is that when steam flows in, if the steam flow rate is too large, the toggle plate will be pushed to rotate, driving the slider to slide along the arc block and squeeze the elastic part, so that the diverter block moves, increasing the diameter of the vent hole, thereby improving the air flow permeability. At the same time, when the flow decreases, the rebound force of the elastic part will push the slider and the toggle plate to reset, thereby dynamically adapting the flow to stabilize the airflow and achieve a steady flow and pressure control effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0021] Figure 1 Shows the overall structural diagram;

[0022] Figure 2 A schematic diagram showing the connection between the connecting component and the moving component is shown;

[0023] Figure 3 shows a structural diagram of the connection components;

[0024] Figure 4 A front schematic diagram of the mobile assembly is shown;

[0025] Figure 5 An exploded view of the moving assembly is shown;

[0026] Figure 6 Shows the front and back structural views of the fixing member;

[0027] Figure 7 Shows the front and back structural views of the sliding member;

[0028] Figure 8 Shows the structural diagram of the rotating part. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0030] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0031] Reference Figures 1 to 8This embodiment provides an ultra-high pressure cylinder tube air flow guiding device, comprising

[0032] Connecting assembly 100; and

[0033] The moving component 200 provided on the inner wall of the connecting component 100 includes a fixing component 201, a sliding component 202 provided on one side of the fixing component 201, and a rotating component 203 provided on one side of the sliding component 202; wherein,

[0034] When the fixing member 201 moves along the inner wall of the connecting assembly 100, the rotating member 203 rotates and drives the sliding member 202 to slide, wherein, Figure 4 As shown, there are several sliding members 202, and there is a sliding connection between the fixed member 201 and the several sliding members 202, while the rotating member 203 is slidingly connected to the other side of the several sliding members 202. The fixed member 201 and the rotating member 203 are engaged with each other, and the fixed member 201 and the rotating member 203 can rotate with each other. When the fixed member 201 is connected to the connecting component 100 and is restricted by the connecting component 100, rotating the rotating member 203 will drive the various sliding members 202 to move, thereby changing the position of each sliding member 202. When the position of each sliding member 202 changes, the vent hole between the fixed member 201 and the rotating member 203 will become larger, thereby improving the pass rate.

[0035] As an optional embodiment, how the connecting component 100 and the moving component 200 improve the pass rate is described in more detail.

[0036] The connecting assembly 100 includes a flange tube 101, a fixed block 103 provided on the inner wall of the flange tube 101, and an inclined groove 102 provided on the inner wall of the fixed block 103; wherein one side of the rotating member 203 is slidably connected to the inner wall of the inclined groove 102, and when the rotating member 203 continues to move along the inclined groove 102, the rotating member 203 continuously drives the sliding member 202 to slide, wherein, as Figure 3 As shown, the overall shape of the flange pipe 101 is an I-shape, with a through hole in the middle. Four fixing blocks 103 are provided on the inner wall of the through hole. The four fixing blocks 103 are integrated with the flange pipe 101. An inclined groove 102 is provided on one of the fixing blocks 103. Figure 3 As shown, the inclined slot 102 is arranged at an angle.

[0037] The fixing member 201 includes a disc 201-1, an arc-shaped hole 201-2 extending through one side of the disc 201-1, an arc-shaped block 201-3 arranged on one side of the arc-shaped hole 201-2, and a cylinder 201-4 arranged on one side of the disc 201-1. The disc 201-1 is circular in overall shape, with four arc-shaped holes 201-2 extending through its edge. The arc-shaped holes 201-2 have the same center as the disc 201-1. An arc-shaped block 201-3 is arranged on one side of each of the four arc-shaped holes 201-2. The height of the arc-shaped block 201-3 is less than that of the disc 201-1. The cylinder 201-4 is arranged on the back side of the disc 201-1.

[0038] A sliding opening 201-5 is provided on one side of the disc 201-1, and one side of the fixed block 103 is slidably connected to the outer wall of the sliding opening 201-5. The outer wall of the disc 201-1 is slidably connected to the inner wall of the flange pipe 101. Figure 6 As shown, four sliding openings 201-5 are provided on the outer ring of the disc 201-1. The positions of the four sliding openings 201-5 correspond to the positions of the fixed blocks 103. When the disc 201-1 is connected to the flange pipe 101, the four sliding openings 201-5 are engaged with the four fixed blocks 103. When the disc 201-1 is pushed, the sliding openings 201-5 will slide on the fixed blocks 103. Similarly, when high-pressure steam blows the disc 201-1, the sliding openings 201-5 will also slide on the fixed blocks 103.

[0039] The sliding member 202 includes a diverter block 202-1, a rectangular groove 202-2 provided on one side of the diverter block 202-1, and a rectangular block 202-3 provided on one side of the diverter block 202-1. Figure 7 As shown, there are several diverter blocks 202-1, and the several diverter blocks 202-1 are slidably connected to each other, and through holes are preset at the center positions of the diverter blocks 202-1. Moving each diverter block 202-1 can expand the through hole area;

[0040] It should be noted that there are several rectangular grooves 202 - 2 , and each rectangular groove 202 - 2 is arranged obliquely.

[0041] The outer wall of the sliding member 202 is slidably connected to the outer wall of the diverter block 202-1, and the outer wall of the cylinder 201-4 is slidably connected to the inner wall of the rectangular groove 202-2. There are several cylinders 201-4, and the outer shapes of several cylinders 201-4 are semicircular. Each cylinder 201-4 is slidably connected to the corresponding rectangular groove 202-2. When the diverter block 202-1 is displaced, the cylinder 201-4 will limit the position of the diverter block 202-1, so that the diverter block 202-1 can only move in the inclination direction of the rectangular groove 202-2.

[0042] The rotating part 203 includes a toggle disk 203-1, a slider 203-2 arranged on one side of the toggle disk 203-1, a limiting groove 203-3 arranged on one side of the toggle disk 203-1 and a protrusion 203-4 arranged on the top of the toggle disk 203-1, wherein the overall shape of the toggle disk 203-1 is circular, and its diameter is smaller than the diameter of the disk 201-1. At the same time, a number of sliders 203-2 are arranged on the disk 201-1, and a recess is arranged in the middle of each slider 203-2. The disk 201-1 and the slider 203-2 are connected together by a hexagon socket bolt. At the same time, there are also a number of limiting grooves 203-3, and several limiting grooves 203-3 and the slider 203-2 are located on the same side.

[0043] The outer wall of the diverter block 202-1 is in contact with one side of the dial 203-1, and the outer wall of the rectangular block 202-3 is slidably connected to the inner wall of the limiting groove 203-3. When the dial 203-1 rotates, it will drive the limiting groove 203-3 to rotate. At this time, the limiting groove 203-3 will push the rectangular block 202-3 to move, and the rectangular block 202-3 will drive the diverter block 202-1 to move along the angle of the limiting groove 203-3. At this time, each diverter block 202-1 will move outward, and the diameter of the vent formed by the combined diverter blocks 202-1 will increase.

[0044] The outer wall of the toggle plate 203-1 is slidably connected to the outer wall of the fixed block 103, and the outer wall of the protrusion 203-4 is slidably connected to the inner wall of the inclined groove 102. When the high-pressure steam blows the disc 201-1 to move, it will drive the entire moving assembly 200 to move. At this time, the protrusion 203-4 will move along the inclined groove 102, thereby causing the toggle plate 203-1 to change its angle, and the limiting groove 203-3 will push the rectangular block 202-3 to move. At this time, the diverter block 202-1 will be displaced, thereby increasing the air vent formed by the various diverter blocks 202-1, thereby improving the pass rate, thereby preventing the air flow of high-pressure steam from being too large, and the air flow guide device will block the flow of high-pressure steam. At the same time, it can also guide the high-pressure steam to converge to the middle, thereby increasing the steam passage speed.

[0045] One side of the slider 203-2 is engaged with the outer wall of the arc block 201-3, and the outer wall of the arc block 201-3 is provided with an elastic member 205. The other side of the elastic member 205 is connected to the outer wall of the fixing member 201, and the outer wall of the fixing member 201 is provided with a guard plate 204. Among them, the notch provided on the slider 203-2 is used to engage with the arc block 201-3. When the angle of the dial 203-1 changes, the slider 203-2 will move on the arc block 201-3, at this time it will squeeze the elastic member 205, and the elastic member 205 will generate a rebound force, which will push the slider 203-2 and then prevent the dial 203-1 from rotating. Therefore, only when the steam flow is too large, it is sufficient to make the dial 203-1 rotate. When the steam amount becomes smaller, the elastic member 205 will push the slider 203-2 to gradually return to its original position, so that the airflow guiding device can still maintain the effect of guiding airflow when the airflow amount becomes smaller.

[0046] It should be noted that the elastic member 205 is a coil spring.

[0047] As an optional embodiment, another structural shape of the diverter block 202 - 1 is provided.

[0048] The sliding member 202 includes a diverter block 202-1, a rectangular groove 202-2 provided on one side of the diverter block 202-1, and a rectangular block 202-3 provided on one side of the diverter block 202-1. Figure 7 The diverter block 202-1 shown is in the shape of a polygon, and each diverter block 202-1 is distributed in a circular array around the same center. The surface angle of the diverter block 202-1 can be changed here, and the steam-facing surface of the diverter block 202-1 is set to a 60° acute-angle slope, and the back surface is set to a 120° arc transition. In this way, when the steam turbine is cold-started and the high-speed steam impacts the diverter block 202-1, the force will be decomposed along the slope, avoiding a sudden increase in local pressure in the cylinder pipe. At the same time, the arc-shaped back-steam surface stabilizes the airflow layer, thereby improving the uniformity of the initial distribution of steam in the cylinder and reducing the thermal stress fluctuation of the rotor.

[0049] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. An airflow guiding device in an ultra-high pressure cylinder tube, characterized by: include, a connection assembly (100); and, The moving component (200) is arranged on the inner wall of the connecting component (100), comprising a fixing component (201), a sliding component (202) arranged on one side of the fixing component (201), and a rotating component (203) arranged on one side of the sliding component (202); wherein, When the fixing member (201) moves along the inner wall of the connecting assembly (100), the rotating member (203) rotates to drive the sliding member (202) to slide.

2. The ultra-high pressure cylinder tube airflow guiding device according to claim 1, characterized in that: The connecting assembly (100) comprises a flange pipe (101), a fixing block (103) arranged on the inner wall of the flange pipe (101), and an inclined groove (102) arranged on the inner wall of the fixing block (103); wherein, One side of the rotating member (203) is slidably connected to the inner wall of the inclined groove (102). When the rotating member (203) continuously moves along the inclined groove (102), the rotating member (203) continuously drives the sliding member (202) to slide.

3. The device for guiding airflow in an ultra-high pressure cylinder tube according to claim 2, characterized in that: The fixing member (201) comprises a disc (201-1), an arc-shaped hole (201-2) extending through one side of the disc (201-1), an arc-shaped block (201-3) arranged on one side of the arc-shaped hole (201-2), and a cylinder (201-4) arranged on one side of the disc (201-1).

4. The device for guiding airflow in an ultra-high pressure cylinder tube according to claim 3, characterized in that: A sliding opening (201-5) is provided on one side of the disc (201-1), one side of the fixed block (103) is slidably connected to the outer wall of the sliding opening (201-5), and the outer wall of the disc (201-1) is slidably connected to the inner wall of the flange pipe (101).

5. The airflow guiding device in the ultra-high pressure cylinder tube according to claim 4, characterized in that: The sliding member (202) comprises a diverter block (202-1), a rectangular groove (202-2) arranged on one side of the diverter block (202-1), and a rectangular block (202-3) arranged on one side of the diverter block (202-1).

6. The airflow guiding device in the ultra-high pressure cylinder tube according to claim 5, characterized in that: The outer wall of the sliding member (202) is slidably connected to the outer wall of the diverter block (202-1), and the outer wall of the cylinder (201-4) is slidably connected to the inner wall of the rectangular groove (202-2).

7. The device for guiding airflow in an ultra-high pressure cylinder tube according to claim 6, characterized in that: The rotating member (203) comprises a toggle disc (203-1), a slider (203-2) arranged on one side of the toggle disc (203-1), a limiting groove (203-3) arranged on one side of the toggle disc (203-1), and a protrusion (203-4) arranged on the top of the toggle disc (203-1).

8. The device for guiding airflow in an ultra-high pressure cylinder tube according to claim 7, characterized in that: The outer wall of the diverter block (202-1) contacts one side of the dial (203-1), and the outer wall of the rectangular block (202-3) is slidably connected to the inner wall of the limiting groove (203-3).

9. The device for guiding airflow in an ultra-high pressure cylinder tube according to claim 8, characterized in that: The outer wall of the dial (203-1) is slidably connected to the outer wall of the fixed block (103), and the outer wall of the protrusion (203-4) is slidably connected to the inner wall of the inclined groove (102).

10. The device for guiding airflow in an ultra-high pressure cylinder tube according to claim 9, characterized in that: One side of the slider (203-2) is engaged with the outer wall of the arc block (201-3); the outer wall of the arc block (201-3) is provided with an elastic member (205); the other side of the elastic member (205) is connected to the outer wall of the fixing member (201); and the outer wall of the fixing member (201) is provided with a guard plate (204).

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