Plasma electrode convenient for heat dissipation

Abstract

The utility model relates to the field of electrodes, in particular to a plasma electrode convenient for heat dissipation, which comprises a cathode main body and an anode, and a gap is reserved between the cathode main body and the anode. The positioning rods are horizontally arranged on the cathode main body, and the multiple positioning rods are arranged side by side; the cooling semicircular ring is attached to the outer circumferential wall of the cathode body in a matched mode, and the inner circumferential surface of the cooling semicircular ring is provided with a positioning hole allowing the positioning rod to be inserted therein; and the limiting mechanism is arranged on the cathode main body and is used for limiting the plurality of heat dissipation circular rings, so that the heat dissipation circular rings cannot be separated from the cathode main body. According to the utility model, the heat dissipation effect of the cathode main body is improved through the number-controllable heat dissipation circular rings, so that the requirements of cost, model, weight and the like are met; in addition, nitrogen is introduced, so that a certain protection effect can be provided for the tungsten ring and the inner wall of the cavity, a certain amount of heat can be taken away, and the heat dissipation effect is further improved.

Description

Technical Field

[0001] The utility model relates to the field of electrodes, in particular to a plasma electrode which is convenient for heat dissipation. Background Art

[0002] In the tail gas treatment equipment, the gas is oxidized or thermally decomposed by electric heating, and then equipped with subsequent equipment such as water washing and spraying to complete the comprehensive treatment of the tail gas. Among them, the gas decomposition uses a plasma electrode, which is composed of a positive and negative poles. When working, the air and arc between the two poles are ionized in contact to form a plasma with concentrated energy, high temperature, fast flow rate and high ionization degree. Due to the conductivity of the ionized gas, the arc energy is quickly transferred and converted into the thermal energy of the gas, forming a high-temperature gas jet and a high-intensity heat source. The gas burns in the combustion chamber through high-speed flow to form a high-temperature flame, thereby cracking the tail gas. The cathode usually uses a tungsten ring, which is heated by a radio frequency power supply to emit electrons.

[0003] A Chinese patent with announcement number CN204082267U discloses a device and method for treating automobile exhaust based on low-temperature plasma. The density of the low-temperature plasma generated is 1,500 times higher than that of ordinary technology, and the purification rate exceeds 90%, which is higher than the current National V standard and Euro IV standard.

[0004] However, the above-mentioned publicly available solutions have the following shortcomings: lack of electrode heat dissipation, the cathode contains a tungsten ring, which generates high heat during operation. The heat will be transmitted through the tooling that fixes the cathode, affecting the cathode peripheral equipment. In addition to the tungsten ring, the cathode also has a structure that fixes the tungsten ring, which transmits high temperature all the time, easily affecting the life of the electrode. Utility Model Content

[0005] The utility model aims to solve the problem of lack of heat dissipation of cathode in the background technology and to provide a plasma electrode which is convenient for heat dissipation.

[0006] The technical solution of the utility model is: a plasma electrode that is easy to dissipate heat, including a cathode body and an anode, and there is a gap between the cathode body and the anode; and also includes:

[0007] A positioning rod is horizontally arranged on the cathode body, and a plurality of positioning rods are arranged side by side;

[0008] A cooling semicircular ring is attached to the outer peripheral wall of the cathode body, and a positioning hole for inserting a positioning rod is arranged on the inner peripheral surface of the cooling semicircular ring. Two cooling semicircular rings are arranged opposite to each other and assembled into a heat dissipation ring. A plurality of heat dissipation rings are arranged side by side.

[0009] And a limiting mechanism is arranged on the cathode body and is used to limit the plurality of heat dissipation rings so that the heat dissipation rings cannot be separated from the cathode body.

[0010] Preferably, the anode comprises an anode body and a tungsten head arranged at the bottom of the anode body.

[0011] Preferably, ring a, ring b and ring c are arranged on the outer wall of the cathode body from bottom to top in sequence, and the diameters of ring a, ring b and ring c increase in sequence. The space between ring a and ring b and located outside the cathode body is an air chamber, and the space between ring b and ring c and located outside the cathode body is a heat dissipation chamber, and the sealing installation is completed by ring a, ring b and ring c.

[0012] Preferably, a cavity is provided in the cathode body, the cavity forms an opening at the bottom of the cathode body, a connecting hole is provided at the top of the cavity, and the connecting hole forms an opening at the top surface of the cathode body; a tungsten ring is provided in the cavity.

[0013] Preferably, a vertical tube is arranged at the bottom of the tungsten ring, a bottom cover is arranged to seal the bottom of the cavity, a cylinder is arranged on the bottom cover, and the bottom of the vertical tube is inserted into the cylinder.

[0014] Preferably, a nitrogen inlet pipe is provided on the cathode body, and the nitrogen inlet pipe is located below the tungsten ring.

[0015] Preferably, the limiting mechanism includes a limiting block arranged at one end of the diameter of the cooling semicircular ring, an arc-shaped limiting groove arranged on the limiting block, a threaded lifting ring arranged on the cathode body for moving up and down, and a limiting rod arranged at the bottom of the threaded lifting ring, and the limiting rod is rotated and inserted into the arc-shaped limiting groove.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects: the heat dissipation effect of the cathode body is improved by controlling the number of heat dissipation rings that can be adjusted later, and the number of different heat dissipation rings can be adjusted according to needs to meet the requirements of cost, model, weight, etc.; in addition, the introduction of nitrogen through the nitrogen inlet pipe can not only provide a certain protection for the tungsten ring and the inner wall of the cavity, but also take away a certain amount of heat, further improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2 for Figure 1 Exploded diagram of

[0019] Figure 3 for Figure 1 Schematic diagram of a partial structure cutaway;

[0020] Figure 4 It is a schematic diagram of the structure of the cooling semicircular ring.

[0021] Figure numerals: 1. anode body; 2. tungsten head; 3. cathode body; 4. cavity; 5. ring a; 6. ring b; 7. ring c; 8. tungsten ring; 9. vertical pipe; 10. bottom cover; 11. cylinder; 12. locking bolt; 13. nitrogen inlet pipe; 14. conical hole; 15. connecting hole; 16. cooling semicircular ring; 17. positioning rod; 18. limit block; 19. arc limit groove; 20. threaded lifting ring; 21. limit rod. DETAILED DESCRIPTION

[0022] Embodiment 1

[0023] like Figure 1-Figure 3 As shown, the utility model proposes a plasma electrode that is easy to dissipate heat, including a cathode body 3 and an anode, there is a gap between the cathode body 3 and the anode, the anode includes an anode body 1 and a tungsten head 2 arranged at the bottom of the anode body 1, the anode body 1 is fixed by other tooling parts, the distance between the anode body 1 and the cathode top is pulled apart, and the distance is adjusted as needed. In an optional embodiment, a conical hole 14 is arranged on the cathode top, and the bottom of the tungsten head 2 is arranged in a cone shape matching the conical hole 14. Rings a5, b6 and c7 are arranged on the outer peripheral wall of the cathode body from bottom to top in sequence, and the diameters of the rings a5, b6 and c7 increase in sequence. The space between the rings a5 and b6 and located outside the cathode body 3 is an air chamber, and the space between the rings b6 and c7 and located outside the cathode body 3 is a heat dissipation chamber, and the sealing installation is completed by the rings a5, b6 and c7; and it also includes:

[0024] A positioning rod 17 is horizontally arranged on the cathode body 3, and a plurality of positioning rods 17 are arranged side by side;

[0025] The cooling semicircular ring 16 is attached to the outer peripheral wall of the cathode body 3. The inner peripheral surface of the cooling semicircular ring 16 is provided with a positioning hole for inserting the positioning rod 17. Two cooling semicircular rings 16 are arranged opposite to each other and assembled into a heat dissipation ring. Multiple heat dissipation rings are arranged side by side. The number of heat dissipation rings can be adjusted according to needs and can also be adjusted later.

[0026] And a limiting mechanism is arranged on the cathode body 3 and is used to limit the plurality of heat dissipation rings so that the heat dissipation rings cannot be separated from the cathode body 3.

[0027] Embodiment 2

[0028] like Figure 1 and Figure 3 As shown, the utility model proposes a plasma electrode that is easy to dissipate heat. Compared with the first embodiment, this embodiment introduces the relevant structure of nitrogen introduction in detail.

[0029] A cavity 4 is arranged in the cathode body 3, and the cavity 4 forms an opening at the bottom of the cathode body 3. A connecting hole 15 is arranged at the top of the cavity 4, and the connecting hole 15 forms an opening at the top surface of the cathode body 3. A tungsten ring 8 is arranged in the cavity 4. A vertical pipe 9 is arranged at the bottom of the tungsten ring 8, and a bottom cover 10 is arranged to seal the bottom of the cavity 4. A cylinder 11 is arranged on the bottom cover 10, and the bottom of the vertical pipe 9 is inserted into the cylinder 11. A plurality of threaded holes are arranged radially on the cathode body 3, and the tungsten ring 8 is supported by a plurality of locking bolts 12. In an optional embodiment, mutually matching threads are arranged on the outer peripheral wall of the bottom cover 10 and the inner peripheral wall of the cavity 4, and a hexagonal groove is arranged on the bottom surface of the bottom cover 10, so that the bottom cover 10 can be rotated to remove the bottom cover 10.

[0030] A nitrogen inlet pipe 13 is provided on the cathode body 3, and the nitrogen inlet pipe 13 is located below the tungsten ring 8. Specifically, the nitrogen inlet pipe 13 is located in the air chamber, and nitrogen is introduced to provide certain protection for the inner wall of the cavity 4 and the tungsten ring 8, and the discharge of nitrogen from the nitrogen cylinder connecting hole 15 will also take away part of the heat, thereby improving the heat dissipation effect.

[0031] Embodiment 3

[0032] like Figure 3 and Figure 4 As shown, the utility model proposes a plasma electrode that is easy to dissipate heat. Compared with the first embodiment, this embodiment introduces the structure of the limiting mechanism in detail.

[0033] The limiting mechanism includes a limiting block 18 arranged at one end of the diameter of the cooling semicircular ring 16, an arc-shaped limiting groove 19 arranged on the limiting block 18, a threaded lifting ring 20 arranged on the cathode body 3 for upward and downward movement, and a limiting rod 21 arranged at the bottom of the threaded lifting ring 20, and the limiting rod 21 is rotated and inserted into the arc-shaped limiting groove 19; when installing or changing the heat dissipation ring, first rotate the threaded lifting ring 20 to move the limiting rod 21 out of the arc-shaped limiting groove 19, and then the cooling semicircular ring 16 can be removed radially, or the cooling semicircular ring 16 can be added. After all the cooling semicircular rings 16 are inserted, the threaded lifting ring 20 is rotated again to re-insert the limiting rod 21 into the arc-shaped limiting groove 19. Under the restriction of the positioning rod 17, the cooling semicircular ring 16 can only move horizontally outward in the radial direction, and under the cooperation of the limiting rod 21 and the arc-shaped limiting groove 19, the cooling semicircular ring 16 can only rotate along the axial direction of the cathode body 3. The combination of the two can completely fix the cooling semicircular ring 16.

[0034] In summary, in the utility model, the heat dissipation effect of the cathode body 3 is improved by using heat dissipation rings whose number can be controlled and adjusted later, wherein the heat dissipation in the heat dissipation chamber is liquid heat dissipation, which has a better heat dissipation effect than air cooling, and the number of different heat dissipation rings can be adjusted according to needs to meet the requirements of cost, model, weight, etc.; in addition, nitrogen is introduced through the nitrogen inlet pipe 13, which can not only provide a certain protection for the tungsten ring 8 and the inner wall of the cavity 4, but also take away a certain amount of heat, further improving the heat dissipation effect.

[0035] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A plasma electrode for heat dissipation, comprising a cathode body (3) and an anode, wherein a gap exists between the cathode body (3) and the anode; characterized in that: Also includes: A positioning rod (17) is horizontally arranged on the cathode body (3), and a plurality of positioning rods (17) are arranged side by side; A cooling semicircular ring (16) is attached to the outer peripheral wall of the cathode body (3), and a positioning hole for inserting a positioning rod (17) is arranged on the inner peripheral surface of the cooling semicircular ring (16). Two cooling semicircular rings (16) are arranged opposite to each other and assembled into a heat dissipation circular ring, and a plurality of heat dissipation circular rings are arranged side by side; And a limiting mechanism is arranged on the cathode body (3) and is used to limit the plurality of heat dissipation rings so that the heat dissipation rings cannot be separated from the cathode body (3).

2. The plasma electrode for facilitating heat dissipation according to claim 1, characterized in that: The anode comprises an anode body (1) and a tungsten head (2) arranged at the bottom of the anode body (1).

3. The plasma electrode for facilitating heat dissipation according to claim 1, characterized in that: A circular ring a (5), a circular ring b (6) and a circular ring c (7) are arranged on the outer peripheral wall of the cathode body from bottom to top, and the diameters of the circular ring a (5), the circular ring b (6) and the circular ring c (7) increase in sequence. The space between the circular ring a (5) and the circular ring b (6) and located outside the cathode body (3) is an air chamber, and the space between the circular ring b (6) and the circular ring c (7) and located outside the cathode body (3) is a heat dissipation chamber. The sealing installation is completed by the circular ring a (5), the circular ring b (6) and the circular ring c (7).

4. The plasma electrode for facilitating heat dissipation according to claim 1, characterized in that: A cavity (4) is arranged in the cathode body (3), the cavity (4) forms an opening at the bottom of the cathode body (3), a connecting hole (15) is arranged at the top of the cavity (4), and the connecting hole (15) forms an opening at the top surface of the cathode body (3); a tungsten ring (8) is arranged in the cavity (4).

5. The plasma electrode for facilitating heat dissipation according to claim 4, characterized in that: A vertical tube (9) is arranged at the bottom of the tungsten ring (8), a bottom sealing cover (10) is arranged at the bottom of the cavity (4) to seal, a cylinder (11) is arranged on the bottom sealing cover (10), and the bottom of the vertical tube (9) is inserted into the cylinder (11).

6. The plasma electrode for facilitating heat dissipation according to claim 5, characterized in that: A nitrogen inlet pipe (13) is arranged on the cathode body (3), and the nitrogen inlet pipe (13) is located below the tungsten ring (8).

7. The plasma electrode for heat dissipation according to claim 1, characterized in that: The limiting mechanism comprises a limiting block (18) arranged at one end of the diameter of the cooling semicircular ring (16), an arc-shaped limiting groove (19) arranged on the limiting block (18), a threaded lifting ring (20) arranged on the cathode body (3) for upward and downward movement, and a limiting rod (21) arranged at the bottom of the threaded lifting ring (20), wherein the limiting rod (21) is rotatably inserted into the arc-shaped limiting groove (19).

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