CN220325882U - Plasma generator - Google Patents
Plasma generator Download PDFInfo
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- CN220325882U CN220325882U CN202322029221.9U CN202322029221U CN220325882U CN 220325882 U CN220325882 U CN 220325882U CN 202322029221 U CN202322029221 U CN 202322029221U CN 220325882 U CN220325882 U CN 220325882U
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- 238000001816 cooling Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 123
- 238000002955 isolation Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 6
- 239000012212 insulator Substances 0.000 claims 1
- 210000002381 plasma Anatomy 0.000 abstract description 24
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000000498 cooling water Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 238000012994 industrial processing Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- Plasma Technology (AREA)
Abstract
The utility model belongs to the technical field of plasmas, and relates to a plasma generator, which comprises a cathode body, an anode body and a driving mechanism, wherein the cathode body comprises a cathode outer tube, a cathode and a cathode cooling system; the anode body comprises an anode outer tube, an anode and an anode cooling system; the cathode outer tube and the anode outer tube are coaxially arranged, one end of the cathode outer tube is embedded into the anode outer tube, the cathode outer tube and the anode outer tube are fixed through an insulating piece, and a cathode is arranged at one end of the cathode outer tube, which is positioned in the anode outer tube; an anode is arranged in the anode outer tube, one end of the driving mechanism is detachably connected to the anode outer tube, and the other end of the driving mechanism is detachably connected to the cathode outer tube; the driving mechanism is used for driving the cathode outer tube and the anode outer tube to realize relative movement, so that the cathode and the anode in the inner cavity of the anode outer tube are contacted with or separated from each other. The plasma generator has good arcing stability and convenient maintenance.
Description
Technical Field
The utility model relates to the technical field of plasmas, in particular to a plasma generator.
Background
A plasma is a state of matter that is highly excited to ionize and may generally consist of positively or negatively charged ions and free electrons. The plasma technology has important application value in the fields of physical research, industrial processing, medical treatment, environmental management, energy research and the like. For example, in the thermal power generation industry, the plasma ignition and stable combustion technology has gradually replaced the traditional fuel ignition technology to be widely applied, and a large amount of fuel can be saved for power plants each year.
The plasma generator is core equipment of the plasma technology, the quality of the plasma generator has important influence on the operation effect and reliability of the plasma technology, and the plasma generator is generally required to have the characteristics of good stability, high energy conversion efficiency, long service life, convenience in overhaul and maintenance and the like. However, at present, the plasma generator used in the thermal power plant has to be improved in arcing stability and is inconvenient to overhaul.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the plasma generator which has good arcing stability and convenient maintenance and is suitable for a thermal power plant.
The technical scheme of the utility model is as follows: a plasma generator comprising a cathode body, an anode body and a drive mechanism, the cathode body comprising a cathode outer tube, a cathode and a cathode cooling system; the anode body comprises an anode outer tube, an anode and an anode cooling system; the cathode outer tube and the anode outer tube are coaxially arranged, one end of the cathode outer tube is embedded into the anode outer tube, the cathode outer tube and the anode outer tube are fixed through an insulating piece, and a cathode is arranged at one end of the cathode outer tube, which is positioned in the anode outer tube; an anode is arranged at one end of the anode outer tube, which is far away from the cathode outer tube, and the anode and the cathode are correspondingly arranged in the anode outer tube, but a gap is reserved between the anode outer tube and the cathode outer tube; one end of the driving mechanism is detachably connected to the anode outer tube, and the other end of the driving mechanism is detachably connected to the cathode outer tube; the driving mechanism is used for driving the cathode outer tube and the anode outer tube to realize relative movement, so that the cathode and the anode in the inner cavity of the anode outer tube are contacted with or separated from each other.
Further, the cathode cooling system comprises a cathode water inlet interface, a cathode water inlet pipe, a cathode water return channel and a cathode water return interface; one end of the cathode water inlet pipe is connected with the cathode water inlet interface; the other end of the cathode water inlet pipe is positioned in the inner cavity of the cathode outer pipe, and a cathode water return channel is formed between the inner wall of the cathode outer pipe and the outer wall of the cathode water inlet pipe; a cathode backwater interface communicated with the outside is arranged on the pipe wall of the cathode outer pipe. The flow process of the cooling water in the cathode cooling system is as follows: cooling water enters the cathode water inlet pipe from the cathode water inlet port, flows to the cathode through the cathode water inlet pipe, cools the cathode, then enters the cathode water return channel, and finally flows out from the cathode water return port.
Further, the anode cooling system comprises an anode water inlet interface, an anode water inlet pipe, an anode water return channel, a water isolation pipe and an anode water return interface; one end of the anode water inlet pipe is connected with the anode water inlet interface; the other end of the anode water inlet pipe is connected with an anode fixing flange, a water passing hole is formed in the anode fixing flange, and water flows through the water passing hole to cool the anode; an anode backwater channel is formed between the outer wall of the anode water inlet pipe and the inner wall of the anode outer pipe, and an anode backwater interface communicated with the outside is arranged on the pipe wall of the anode outer pipe. The flow process of the cooling water in the anode cooling system is as follows: cooling water enters the anode water inlet pipe from the anode water inlet port, flows towards the anode through the anode water inlet pipe, contacts the outer surface of the anode after passing through the water passing holes on the anode fixing flange to finish cooling the anode, then enters the anode water return channel, and finally flows out from the anode water return port.
Further, the anode cooling system further comprises a water isolation pipe, the water isolation pipe is sleeved on the outer side of the anode, one end of the water isolation pipe is in sealing connection with the anode fixing flange, a water passing hole on the anode fixing flange is arranged on one side of the inner part of the water isolation pipe, water in the anode water inlet pipe is limited in the water isolation pipe after coming out of the water passing hole, and therefore the outer surface of the anode can be fully contacted and heat exchanged; the other end of the water separating pipe is opened in the inner cavity of the anode outer pipe, and water flows out of the water separating pipe and then enters the anode backwater channel.
Further, an air inlet pipe is arranged in the inner cavity of the anode outer pipe, the air inlet pipe, the anode water inlet pipe and the cathode outer pipe are all kept coaxially arranged, the air inlet pipe is arranged between the anode water inlet pipe and the cathode outer pipe, an air inlet channel is formed between the inner wall of the air inlet pipe and the outer wall of the cathode outer pipe, one end of the air inlet pipe is connected with an air inlet interface, and the other end of the air inlet pipe is connected with an anode fixing flange in a sealing mode.
Further, one end of the air inlet pipe adjacent to the anode fixing flange is provided with an air ring, the air ring is provided with an air outlet, and the direction of the air outlet is arranged at an included angle with the radial direction of the air ring, so that the air flows out of the air outlet to form rotary air flow. The rotating air flow can effectively restrict the arc, so that the arc is kept stable. The air inlet process is as follows: the gas enters the gas inlet pipe from the gas inlet interface, flows to the junction of the anode and the cathode in the gas inlet pipe, and enters the inner cavity of the anode after passing through the insulating piece and the gas ring at the junction.
Furthermore, the surface shape of one side of the cathode, which is close to the inner cavity of the cathode outer tube, is conical, so that the structure with high middle and low periphery can effectively enlarge the cooling area of the cathode, is beneficial to the flow of cooling water and avoids forming a dead water area.
Further, the middle part of the anode cavity is narrower than the two ends, so that the gas entering the anode cavity can be compressed and then expanded in the anode cavity, and the rotating strength of the gas flow can be increased through a proper compression ratio, so that the arc voltage is improved, and the plasma generator can run more stably.
Further, the insulating piece comprises an insulating flange and an insulating ring; the insulating flange is arranged on the end face of the anode outer tube connected with the cathode outer tube, and the insulating ring is arranged at one end of the cathode outer tube, on which the cathode is arranged. The inner ring of the insulating ring is connected with the cathode outer tube, the outer ring of the insulating ring is connected with the inner wall of the air inlet pipe, and the insulating ring is provided with vent holes, so that gas can pass through conveniently.
Further, the driving mechanism is an electric cylinder or an air cylinder or an oil cylinder; the driving mechanism can only drive the cathode to contact with and separate from the anode.
Compared with the prior art, the utility model has the beneficial effects that:
1. the plasma generator is provided with the driving mechanism, and the anode and the cathode can be enabled to realize contact arcing by using the driving mechanism according to the requirement; meanwhile, the cathode and the anode can directly keep a specific distance, and a high-frequency arcing power supply is utilized for direct arcing; namely, the method and the device can be suitable for starting arcs in two modes;
2. in the method, the middle part of the anode cavity is narrower than the two ends, so that the gas entering the anode cavity can be compressed and then expanded in the anode cavity, the rotation strength of the gas flow can be increased through a proper compression ratio, the arc voltage is improved, and the plasma generator can run more stably;
3. in the application, the surface shape of one side of the cathode, which is close to the inner cavity of the cathode outer tube, is conical, so that the structure with high middle and low periphery can effectively enlarge the cooling area of the cathode, is beneficial to the flow of cooling water and avoids forming a dead water area;
4. the plasma generator in this application, actuating mechanism, positive pole body and negative pole body isotructure all adopt modes fixed connection such as bolt, easy maintenance.
Drawings
FIG. 1 is a schematic overall view of embodiment 1 of the present utility model;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of a gas ring in accordance with the present utility model;
FIG. 4 is a schematic view of one embodiment of the present utility model without a drive mechanism installed;
in the figure: 1-cathode body, 10-cathode outer tube, 11-cathode water inlet interface, 12-cathode water return interface, 13-cathode water inlet pipe, 14-cathode, 2-anode body, 20-anode outer tube, 21-anode water inlet interface, 22-anode water return interface, 23-anode water inlet pipe, 24-air inlet pipe, 25-water isolation pipe, 26-air inlet interface, 27-anode, 31-insulating flange, 32-insulating ring, 33-gas ring, 34-anode fixing flange, 4-driving mechanism, 41-first fixing plate, 42-second fixing plate, 43-insulating plate and 5-arc.
Detailed Description
The present utility model will be described in further detail with reference to specific examples, wherein methods or functional elements not specifically described are prior art.
Example 1
As shown in fig. 1 to 4, the present embodiment is a plasma generator comprising a cathode body 1, an anode body 2 and a driving mechanism 4, wherein the cathode body 1 comprises a cathode outer tube 10, a cathode 14 and a cathode cooling system; the anode body 2 comprises an anode outer tube 20, an anode 27 and an anode cooling system; the cathode outer tube 10 and the anode outer tube 20 are coaxially arranged, one end of the cathode outer tube 10 is embedded into the anode outer tube 20, the cathode outer tube 10 and the anode outer tube 20 are fixed through an insulating piece, and the cathode 14 is arranged at one end of the cathode outer tube 10, which is positioned in the anode outer tube 20; an anode is arranged at one end of the anode outer tube 20 far away from the cathode outer tube 10, and the anode and the cathode are correspondingly arranged in the anode outer tube 20, but a gap is reserved between the anode and the cathode; one end of the driving mechanism 4 is connected to the anode outer tube 20 in a matched manner through a first fixing plate 41 and a bolt, and the other end of the driving mechanism is connected to the cathode outer tube 10 in a matched manner through a second fixing plate 42, an insulating plate 43 and a bolt; the driving mechanism 4 is used for driving the cathode outer tube 10 and the anode outer tube 20 to realize relative movement, so that the cathode and the anode in the inner cavity of the anode outer tube 20 are contacted with or separated from each other.
In this embodiment, the cathode cooling system includes a cathode water inlet port 11, a cathode water inlet pipe 13, a cathode water return channel and a cathode water return port 12; one end of the cathode water inlet pipe 13 is connected with the cathode water inlet interface 11; the other end of the cathode water inlet pipe 13 is positioned in the inner cavity of the cathode outer pipe 10, and a gap between the inner wall of the cathode outer pipe 10 and the outer wall of the cathode water inlet pipe 13 forms a cathode water return channel; a cathode backwater interface 12 communicated with the outside is arranged on the pipe wall of the cathode outer pipe 10.
The anode cooling system comprises an anode water inlet port 21, an anode water inlet pipe 23, an anode water return channel, a water isolation pipe 25 and an anode water return port 22; one end of the anode water inlet pipe 23 is connected with the anode water inlet interface 21; the other end of the anode water inlet pipe 23 is connected with an anode fixing flange 34, a water passing hole is arranged on the anode fixing flange 34, and water flows through the water passing hole to cool the anode; the gap between the outer wall of the anode water inlet pipe 23 and the inner wall of the anode outer pipe 20 forms an anode water return channel, and the pipe wall of the anode outer pipe 20 is provided with an anode water return interface 22 communicated with the outside.
In this embodiment, the anode cooling system further includes a water-proof pipe 25, the water-proof pipe 25 is sleeved outside the anode, one end of the water-proof pipe 25 is connected with the anode fixing flange 34 in a sealing manner, and the water passing hole on the anode fixing flange 34 is located at one side of the inside of the water-proof pipe 25, so that the water in the anode water inlet pipe 23 is limited to the inside of the water-proof pipe 25 to be fully contacted with the outer surface of the anode after exiting from the water passing hole; the other end of the water separator tube 25 is opened in the inner cavity of the anode outer tube 20, and water flows out of the water separator tube 25 and then enters the anode water return channel.
In this embodiment, an air inlet pipe 24 is disposed in the inner cavity of the anode outer pipe 20, the air inlet pipe 24, the anode water inlet pipe 23 and the cathode outer pipe 10 are all coaxially disposed, the air inlet pipe 24 is disposed between the anode water inlet pipe 23 and the cathode outer pipe 10, an air inlet channel is formed between the inner wall of the air inlet pipe 24 and the outer wall of the cathode outer pipe 10, one end of the air inlet pipe 24 is connected with an air inlet interface 26, and the other end is connected with an anode fixing flange 34 in a sealing manner.
In this embodiment, an air ring 33 is disposed at an end of the air inlet pipe 24 adjacent to the anode fixing flange 34, an air outlet hole is disposed on the air ring 33, and an included angle is formed between the direction of the air outlet hole and the radial direction of the air ring 33, as shown in fig. 3, so that the air flows out from the air outlet hole to form a rotating air flow. The rotating gas flow can effectively restrict the arc 5, so that the arc 5 is kept stable.
In this embodiment, the surface shape of the cathode near the inner cavity of the cathode outer tube 10 is conical, so that the structure with high middle and low periphery can effectively enlarge the cooling area of the cathode, and is beneficial to the flow of cooling water, so as to avoid forming a dead water area. The middle part of the anode cavity is narrower than the two ends, so that the gas entering the anode cavity can be compressed and then expanded in the anode cavity, and the rotating strength of the gas flow can be increased through a proper compression ratio, so that the arc voltage is improved, and the plasma generator can operate more stably.
In the present embodiment, the insulating member includes an insulating flange 31 and an insulating ring 32; an insulating flange 31 is provided on the end face of the anode outer tube 20 where the cathode body is joined, and an insulating ring 32 is provided on the end of the cathode outer tube 10 where the cathode is provided. The inner ring of the insulating ring 32 is connected with the cathode outer tube 10, the outer ring of the insulating ring 32 is connected with the inner wall of the air inlet tube 24, and the insulating ring 32 is provided with vent holes.
In this embodiment, the driving mechanism 4 may be an electric cylinder or an air cylinder or an oil cylinder; the driving mechanism 4 may be any mechanism capable of driving the cathode to contact with and separate from the anode.
When the arc starting device is used, an arc starting mode can be freely selected, if a contact arc starting mode is selected, a driving mechanism 4 is required to be installed, a cathode is close to an anode under the driving of the driving mechanism 4, an arc starting power supply is provided after the cathode is in contact with the anode, and after an arc 5 is emitted, the driving mechanism 4 drives the cathode to be far away from the anode 5, so that the contact arc starting process is completed; if the high-frequency arcing mode is selected, only a fixed gap is kept between the cathode and the anode, and the high-frequency arcing power supply is used for direct arcing, of course, in some cases, if only the high-frequency arcing mode is needed, the driving mechanism 4 is not necessary, can be omitted, the cathode body and the anode body are directly connected through an insulating flange, and finally the structure of the plasma generator can be simplified into the structure shown in fig. 4.
The above is only a part of embodiments of the present utility model, and it is not intended to limit the present utility model, and it is obvious to those skilled in the art that the present utility model can be combined and modified in various technical features, and it is intended to include the present utility model in the scope of the present utility model without departing from the spirit and scope of the present utility model.
Claims (10)
1. A plasma generator, characterized in that: comprises a cathode body, an anode body and a driving mechanism,
the cathode body comprises a cathode outer tube, a cathode and a cathode cooling system;
the anode body comprises an anode outer tube, an anode and an anode cooling system;
the cathode outer tube and the anode outer tube are fixedly arranged through the coaxial center of the insulating piece, one end of the cathode outer tube is embedded into the anode outer tube, and one end of the cathode outer tube, which is positioned in the anode outer tube, is provided with a cathode; an anode is arranged in the anode outer tube, the anode and the cathode are correspondingly arranged in the anode outer tube, and a gap is reserved between the anode and the cathode;
one end of the driving mechanism is detachably connected to the anode outer tube, and the other end of the driving mechanism is detachably connected to the cathode outer tube; the driving mechanism is used for driving the cathode outer tube and the anode outer tube to realize relative movement, so that the cathode and the anode in the inner cavity of the anode outer tube are contacted with or separated from each other.
2. The plasma generator of claim 1, wherein: the cathode cooling system comprises a cathode water inlet interface, a cathode water inlet pipe, a cathode water return channel and a cathode water return interface; one end of the cathode water inlet pipe is connected with the cathode water inlet interface; the other end of the cathode water inlet pipe is positioned in the inner cavity of the cathode outer pipe, and a cathode water return channel is formed between the inner wall of the cathode outer pipe and the outer wall of the cathode water inlet pipe; a cathode backwater interface communicated with the outside is arranged on the pipe wall of the cathode outer pipe.
3. The plasma generator of claim 1, wherein: the anode cooling system comprises an anode water inlet interface, an anode water inlet pipe, an anode water return channel, a water isolation pipe and an anode water return interface; one end of the anode water inlet pipe is connected with the anode water inlet interface; the other end of the anode water inlet pipe is connected with an anode fixing flange, a water passing hole is formed in the anode fixing flange, and water flows through the water passing hole to cool the anode; an anode backwater channel is formed between the outer wall of the anode water inlet pipe and the inner wall of the anode outer pipe, and an anode backwater interface communicated with the outside is arranged on the pipe wall of the anode outer pipe.
4. A plasma generator according to claim 3, wherein: the anode cooling system further comprises a water isolation pipe, the water isolation pipe is sleeved on the outer side of the anode, one end of the water isolation pipe is connected with the anode fixing flange in a sealing mode, a water passing hole in the anode fixing flange is arranged on one side of the inner portion of the water isolation pipe, and water in the anode water inlet pipe is limited to be in full contact with the outer surface of the anode after coming out of the water passing hole; the other end of the water separating pipe is opened in the inner cavity of the anode outer pipe, and water flows out of the water separating pipe and then enters the anode backwater channel.
5. A plasma generator according to claim 3, wherein: the air inlet pipe is arranged in the inner cavity of the anode outer pipe, the air inlet pipe, the anode water inlet pipe and the cathode outer pipe are all kept coaxially arranged, the air inlet pipe is arranged between the anode water inlet pipe and the cathode outer pipe, an air inlet channel is formed between the inner wall of the air inlet pipe and the outer wall of the cathode outer pipe, one end of the air inlet pipe is connected with the air inlet interface, and the other end of the air inlet pipe is connected with the anode fixing flange in a sealing mode.
6. The plasma generator of claim 5, wherein: the gas inlet pipe is provided with a gas ring at one end adjacent to the anode fixing flange, the gas ring is provided with gas outlet holes which are arranged in a circumferential array, and the gas outlet direction of the gas outlet holes is arranged at an included angle with the radial direction of the gas ring, so that gas flows out of the gas outlet holes to form rotary gas flow.
7. The plasma generator of claim 1, wherein: the shape of one side of the cathode, which is close to the inner cavity of the cathode outer tube, is conical.
8. The plasma generator of claim 1, wherein: the middle part of the inner cavity of the anode is narrower than the two ends.
9. The plasma generator of claim 1, wherein: the driving mechanism is an electric cylinder or an air cylinder or an oil cylinder.
10. The plasma generator of claim 1, wherein: the insulator includes an insulating flange and an insulating ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322029221.9U CN220325882U (en) | 2023-07-31 | 2023-07-31 | Plasma generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322029221.9U CN220325882U (en) | 2023-07-31 | 2023-07-31 | Plasma generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220325882U true CN220325882U (en) | 2024-01-09 |
Family
ID=89424466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322029221.9U Active CN220325882U (en) | 2023-07-31 | 2023-07-31 | Plasma generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220325882U (en) |
-
2023
- 2023-07-31 CN CN202322029221.9U patent/CN220325882U/en active Active
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