A petal-shaped composite particle capture device

Abstract

The present invention discloses a petal-shaped composite particle capture device, comprising a petal-shaped shielding structure; the petal-shaped shielding structure is arranged inside a trap structure; the petal-shaped shielding structure comprises a plurality of shields; the upper and lower parts of the plurality of shields are relatively tilted; the plurality of shields are fixedly arranged, and the angles formed by the tilts point to the same direction; gaps are arranged between the plurality of shields to form a capture area, and the outermost shield and the trap wall of the trap structure form a capture area; the plurality of capture areas jointly form a particle capture channel, and the particles are captured after rebounding in the particle capture channel formed by the inclined surfaces of the plurality of shields. The use of a multi-layer "petal-shaped" shielding structure can improve the particle collection rate of the trap and effectively limit the particles from escaping after falling into it.

Description

Technical Field

[0001] The invention belongs to the field of power systems, and in particular to a petal-shaped composite particle capturing device. Background Art

[0002] GIS equipment operates in the power system for a long time, and insulation reliability is crucial to the safe operation of the power grid. During operation, a certain amount of particulate foreign matter will be generated due to equipment operation vibration, contact friction, gas medium disturbance and other reasons. These charged particles will move in the power equipment under the action of electric field force. In severe cases, it will cause the air gap between the conductor and the cylinder to break down, or the particles will adhere to the surface of the insulating parts and cause surface flashover, resulting in discharge failure and huge economic losses. The presence of particles reduces the insulation performance of the electrical equipment itself, there are insulation risks, and greatly affects the operational reliability of the equipment.

[0003] In order to reduce the adverse effects of charged particles on the operational reliability of power equipment, it is necessary to add some structures that inhibit particles inside the power equipment to limit the movement of charged particles, control the particles within a limited area, and eliminate the adverse effects on the insulation of the power equipment. At present, the conventional method is to arrange grid plates at the position of the hand hole trap, such as the particle catcher disclosed in the Chinese invention patent application with application publication number CN11957674B, which can be applied to the GIS / GIS cylinder, including a trap cover plate, a trap grid plate detachably connected to the inner side of the trap cover plate, an equipotential area is formed between the trap grid plate and the trap cover plate, and grid holes are set on the trap grid plate for metal particles to pass through to enter the equipotential area. Under the action of AC high voltage, the metal particles in the cylinder will move under the action of the electric field, and finally pass through the grid holes to enter the equipotential area, thereby achieving the capture of metal particles.

[0004] When this type of trap is actually used, the charged particles will bounce around in the cylinder under the action of the electric field and gravity. If they hit the surface of the trap plate that is not a grid hole during the falling process, the particles with a higher movement speed will bounce out of the trap with a high probability, so there is a problem of low collection capacity. In addition, this type of particle trap is usually equipped with a single grid plate. A small amount of particles that fall into the trap will still jump out of the trap in the opposite direction, pass through the grid holes and re-enter the cylinder. The particles inside the cylinder will reduce the insulation performance of the electrical equipment, posing an insulation risk. Therefore, the existing traps have poor capture effects and cannot effectively suppress the movement and harm of charged particles. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a petal-shaped composite particle capture device, which adopts a multi-layer "petal-shaped" shielding structure to improve the particle collection rate of the trap and effectively limit the escape of particles after falling into it.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A petal-shaped composite particle capturing device, comprising a petal-shaped shielding structure;

[0008] The petal-shaped shielding structure is arranged inside the trap structure;

[0009] The petal-shaped shielding structure comprises a plurality of shields; the upper and lower parts of the plurality of shields are relatively tilted; the plurality of shields are fixedly arranged, and the angles formed by the tilts point to the same direction;

[0010] Gaps are provided between the multiple shields to form a capture area, and the outermost shield and the trap wall of the trap structure form a capture area; the multiple capture areas together form a particle capture channel, and the particles are captured after rebounding in the particle capture channel formed by the inclined surfaces of the multiple shields.

[0011] Preferably, the outermost shield extends downward to the trap cover plate of the trap structure and is fixedly connected; an adsorbent is arranged inside the cavity formed by the extension of the outermost shield.

[0012] Furthermore, a plurality of air holes are arranged on the outermost shield.

[0013] Preferably, the petal-shaped shielding structure comprises a first shield, a second shield and a third shield; an intermediate baffle and an intermediate boss are arranged inside the third shield; the first shield, the second shield and the third shield and the intermediate boss are all fixed on the connecting plate; the intermediate baffle is fixed on the shielding surface of the upper half of the third shield;

[0014] A first capture area is formed between the first shield and the trap wall of the trap structure; a second capture area is formed between the first shield and the second shield, a third capture area is formed between the second shield and the third shield, and a fourth capture area is formed between the third shield and the middle baffle and the middle boss. The first capture area, the second capture area, the third capture area and the fourth capture area together form a particle capture channel.

[0015] Furthermore, the first shield, the second shield, the third shield, the middle boss and the connecting plate are welded to form an integrated structure.

[0016] Furthermore, the middle baffle is in a cross-shaped structure.

[0017] Preferably, the shielding is in an annular structure, and the angles formed by the inclination of the multiple shieldings all point to the inner center of the circle or to the outer trap structure.

[0018] Preferably, the petal-shaped shielding structure is fixed on a trap cover plate of the trap structure, a groove is provided at the center of the trap cover plate, and an adsorbent structure is provided inside the groove.

[0019] Preferably, the capture area is divided into an upper capture area and a lower capture area at an angle of the shielded inclined surface; the upper capture area is used to collect particles; and the lower capture area is used to prevent particles from escaping.

[0020] Preferably, an adsorbent structure is arranged at the bottom of the petal-shaped shielding structure; the adsorbent structure comprises an adsorbent and an adsorbent cover; the adsorbent is arranged inside the adsorbent cover, the adsorbent cover is fixed on the trap cover plate of the trap structure, and the petal-shaped shielding structure is fixed on the top of the adsorbent cover.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] The present invention provides a petal-shaped composite particle capture device, which adopts a multi-layer "petal-shaped" shielding structure. The multi-layer petal-shaped shielding structure divides the trap area into multiple capture areas. The upper half of each capture channel can achieve a high particle collection capacity of the trap, that is, the particles are directly captured after falling into the trap area, and it is difficult to bounce out. The lower half of each capture channel can achieve an extremely low escape rate of the trap. The composite installation structure is adopted, and the effects of particle capture and adsorption by adsorbent can be achieved at the same time. The inclination angles of the previous shielding surface and the shielding surface of the capture area are matched with each other, and they play a role in extending the rebound channel and blocking the particles from jumping out. The present invention can improve the particle collection rate of the trap, effectively limit the escape of particles after falling in, thereby improving the capture rate of charged particles, effectively inhibiting the movement of particles, and improving the insulation reliability of power equipment. The device has a high capture rate, a simple structure, is easy to install and disassemble, and is easy to clean, which is conducive to the layout and application in power products.

[0023] Furthermore, the adsorbent is placed in the enclosed space formed by the petal-shaped shield, eliminating the need for an adsorbent cover, occupying less space and having a simpler structure, while having the dual effects of absorbing moisture and capturing particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a petal-shaped composite device in Example 1 of the present invention.

[0025] Figure 2 This is a schematic diagram of the petal-shaped shielding structure of Example 1 of the present invention.

[0026] Figure 3 1 is a top view of the petal-shaped shielding structure of Example 1 of the present invention.

[0027] Figure 4 This is a diagram showing the particle capture effect of Example 1 of the present invention.

[0028] Figure 5 This is the M capture area diagram in Example 1 of the present invention.

[0029] Figure 6Schematic diagram of the structure of a petal-shaped composite device in Example 2 of the present invention.

[0030] Figure 7 This is a schematic diagram of the structure of a petal-shaped composite device in Example 3 of the present invention.

[0031] Figure 8 This is a schematic diagram of the structure of a petal-shaped composite device in Example 4 of the present invention.

[0032] Fig. 9 This is a schematic diagram of the structure of a petal-shaped composite device in Example 5 of the present invention.

[0033] In the figure: petal-shaped shielding structure 1; hand hole extraction port 2; trap cover 3; adsorbent 4; adsorbent cover 5; first shield 6; second shield 7; third shield 8; middle baffle 9; middle boss 10; connecting plate 11. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0035] Example 1

[0036] like Figure 1 and Figure 2 As shown, a petal-shaped composite particle capturing device of the present invention comprises three parts: a petal-shaped shielding structure 1, an adsorbent structure, and a trap structure. The petal-shaped shielding structure 1 is arranged inside the trap structure, and the adsorbent structure is arranged at the bottom of the petal-shaped shielding structure 1, and is used to collect the particles collected by the petal-shaped shielding structure 1.

[0037] like Figure 2 and Figure 3 As shown, the petal-shaped shielding structure 1 includes a first shield 6, a second shield 7, a third shield 8, an intermediate baffle 9, an intermediate boss 10 and a connecting plate 11. The first shield 6, the second shield 7, the third shield 8, the intermediate baffle 9 and the intermediate boss 10 are welded together through the connecting plate 11. The intermediate baffle 9 is a cross-shaped structure.

[0038] The P region formed between the trap wall of the trap structure and the first shield 6, the Q region formed between the first shield 6 and the second shield 7, the M region formed between the second shield 7 and the third shield 8, and the N region formed between the third shield 8 and the middle baffle 9 and the middle boss 10 together constitute a particle capture channel.

[0039] The adsorbent structure includes an adsorbent 4 and an adsorbent cover 5. The adsorbent cover 5 is assembled into one with the petal-shaped shielding structure 1 by screws. The adsorbent 4 is arranged inside the adsorbent cover 5. The particles collected by the multi-layer petal-shaped shielding fall into the holes of the adsorbent 4 to realize the particle capturing function.

[0040] In this embodiment, the trap structure takes the hand hole as an example, and includes a hand hole opening 2 and a trap cover 3. The petal-shaped device composed of the multi-layer petal-shaped shielding structure 1 and the adsorbent structure is fixed to the trap cover 3 by screws, and the trap cover 2 is fixed to the hand hole opening 2 by screws, thereby forming a petal-shaped composite device, and realizing the dual functions of placing the adsorbent 4 to absorb moisture and capture particles.

[0041] like Figure 4 and Figure 5 As shown, when particle A falls into this area and encounters any petal-shaped shield, if it hits the second shield, the particle will be captured by the area M formed by the second shield and the third shield. The M area can be divided into the upper half area M1 and the upper half area M2. The particle will bounce in the capture channel formed by the second shielding surface and the third shielding surface, enter the M2 area from the M1 area, and finally enter the adsorbent cover from the hole at the bottom of the shield.

[0042] A multi-layer "petal-shaped" shielding structure is used to divide the trap area into multiple capture zones. In this example, it is divided into P capture zone, Q capture zone, M capture zone, and N capture zone. Each zone is divided into upper and lower half zones. Taking zone M as an example, it can be divided into zone M1 and zone M2. The main function of zone M1 is to achieve the high particle collection capacity of the trap, that is, the particles are directly captured after falling into the trap area and it is difficult to bounce out. The main function of zone M2 is to achieve an extremely low escape rate of the trap, such as Figure 4 As shown, after particle B falls into the trap, it enters the adsorbent cover and moves in the opposite direction. Due to the blocking effect of the inclined surface of the previous shielding surface, the particle cannot jump out directly in the opposite direction. The inclination angles of the second shielding surface and the third shielding surface in the capture area match each other. First, the channel extends the particle rebound path and reduces the particle's mobility through rebound. Second, the shielding surface controls the angle of the inclined surface. After the particle enters the trap, it rebounds between the two shielding surfaces, so that it gradually enters the M2 area during the rebound process and then enters the adsorbent cover.

[0043] Therefore, when the particles fall into the trap area, no matter which capture area they fall into, they will be captured and it will be difficult for them to escape.

[0044] The present invention uses a petal-shaped composite device and a multi-layer "petal-shaped" shielding structure to improve the particle collection rate of the trap, effectively limit the escape of particles after falling into it, thereby improving the capture rate of charged particles, effectively inhibiting the movement of particles, and improving the insulation reliability of power equipment. The device has a high capture rate, a simple structure, is easy to install and disassemble, and is easy to clean, which is conducive to the layout and application in power products.

[0045] The petal-shaped composite particle capture device of the present invention adopts a multi-layer "petal-shaped" shielding structure. The multi-layer petal-shaped shielding structure 1 divides the trap area into multiple capture areas. The upper half of each capture channel can achieve a high particle collection capacity of the trap, that is, the particles are directly captured after falling into the trap area, and it is difficult for them to bounce out. The lower half of each capture channel can achieve an extremely low escape rate of the trap. The composite installation structure can achieve the effects of particle capture and adsorption of adsorbents at the same time. The inclination angles of the previous shielding surface and the shielding surface of the capture area are matched with each other, and they play a role in extending the rebound channel and preventing particles from jumping out.

[0046] Example 2

[0047] like Figure 6 As shown, the outermost shield in the petal-shaped shield structure 1 extends downward to the trap cover 3 of the trap structure, and is fixedly connected to the trap cover 3 by screws; the adsorbent 4 is arranged inside the cavity formed between the outermost shield extending downward and the trap cover 3. In addition, a plurality of air holes are arranged on the outermost shield. By placing the adsorbent 4 in the enclosed space formed by the petal-shaped shield, the adsorbent cover is omitted, the space occupied is smaller, the structure is simpler, and the dual effects of adsorbing moisture and capturing particles are achieved.

[0048] Example 3

[0049] like Figure 7 As shown, the petal-shaped shielding structure 1 is fixedly connected to the trap cover 3 of the trap structure by screws, and an arc-shaped groove is arranged at the center of the trap cover 3, and an adsorbent 4 is arranged inside the arc-shaped groove.

[0050] Example 4

[0051] like Figure 8 As shown, the angles formed by the first shield 6, the second shield 7 and the third shield 8 in the petal-shaped shielding structure 1 all point to the outer trap structure, and the outermost shield in the petal-shaped shielding structure 1 extends downward to the trap cover 3 of the trap structure, and is fixedly connected to the trap cover 3 by screws; the adsorbent 4 is arranged inside the cavity formed between the outermost shield extending downward and the trap cover 3.

[0052] Example 5

[0053] like Fig. 9 As shown, the angles formed by the first shield 6, the second shield 7 and the third shield 8 in the petal-shaped shielding structure 1 all point to the trap structure outside, and the petal-shaped shielding structure 1 is fixedly connected to the trap cover 3 of the trap structure by screws. An arc-shaped groove is arranged at the center of the trap cover 3, and an adsorbent 4 is arranged inside the arc-shaped groove.

Claims

1. A petal-shaped composite particle capturing device, characterized in that: It includes a petal-shaped shielding structure (1); The petal-shaped shielding structure (1) is arranged inside the trap structure; The petal-shaped shielding structure (1) comprises a plurality of shields; the upper and lower parts of the plurality of shields are arranged relatively tilted; the plurality of shields are fixedly arranged, and the angles formed by the tilts point to the same direction; Gaps are provided between the plurality of shields to form a capture region, and the outermost shield and the trap wall of the trap structure form a capture region; The plurality of capture areas together form a particle capture channel, and the particles are captured after rebounding in the particle capture channel formed by the plurality of shielded inclined surfaces; The outermost shield extends downward to the trap cover plate (3) of the trap structure and is fixedly connected; an adsorbent (4) is arranged inside the cavity formed by the extension of the outermost shield; The capture area is divided into an upper capture area and a lower capture area at an angle of the shielded inclined surface; the upper capture area is used to collect particles; the lower capture area is used to prevent particles from escaping; The shield is arranged on the connecting plate (11), and the upper half and the lower half of the shield are both arranged obliquely relative to the connecting plate (11).

2. The petal-shaped composite particle capturing device according to claim 1, characterized in that: The outermost shield is provided with a plurality of air holes.

3. The petal-shaped composite particle capturing device according to claim 1, characterized in that: The petal-shaped shielding structure (1) comprises a first shield (6), a second shield (7) and a third shield (8); an intermediate baffle (9) and an intermediate boss (10) are arranged inside the third shield (8); the first shield (6), the second shield (7) and the third shield (8) and the intermediate boss (10) are all fixed on the connecting plate (11); the intermediate baffle (9) is fixed on the shielding surface of the upper half of the third shield (8); A first capture area is formed between the first shield (6) and the trap wall of the trap structure; a second capture area is formed between the first shield (6) and the second shield (7); a third capture area is formed between the second shield (7) and the third shield (8); a fourth capture area is formed between the third shield (8) and the middle baffle (9) and the middle boss (10); the first capture area, the second capture area, the third capture area and the fourth capture area together form a particle capture channel.

4. The petal-shaped composite particle capturing device according to claim 3, characterized in that: The first shield (6), the second shield (7), the third shield (8), the middle boss (10) and the connecting plate (11) are welded to form an integrated structure.

5. The petal-shaped composite particle capturing device according to claim 3, characterized in that: The middle baffle (9) is in a cross-shaped structure.

6. The petal-shaped composite particle capturing device according to claim 1, characterized in that: The shield is in a ring structure, and the angles formed by the inclination of the multiple shields all point to the inner center of the circle or to the outer trap structure.

7. The petal-shaped composite particle capturing device according to claim 1, characterized in that: The petal-shaped shielding structure (1) is fixed on a trap cover plate (3) of the trap structure; a groove is provided at the center of the trap cover plate (3), and an adsorbent structure is provided inside the groove.

8. The petal-shaped composite particle capturing device according to claim 1, characterized in that: An adsorbent structure is arranged at the bottom of the petal-shaped shielding structure (1); the adsorbent structure comprises an adsorbent (4) and an adsorbent cover (5); the adsorbent (4) is arranged inside the adsorbent cover (5), the adsorbent cover (5) is fixed on a trap cover plate (3) of the trap structure, and the petal-shaped shielding structure (1) is fixed on the top of the adsorbent cover (5).

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