阅读说明：本技术 一种用于多极式等离子发生器的绝缘结构 (Insulation structure for multi-pole plasma generator ) 是由 李裔红 于 2020-12-15 设计创作，主要内容包括：本发明涉及等离子发生器技术领域,提供了一种用于多极式等离子发生器的绝缘结构,包绝缘气环,所述绝缘气环设置于大阳极与小阳极之间和/或小阳极与小阳极之间；所述绝缘气环横截面为一环状面,所述绝缘气环的环状面上设置有多个供水流和气流分别独立流通的通水孔和导气通孔,所述通水孔与所述导气通孔不连通；所述绝缘气环的外圆周面上还开设有喷气环槽,所述导气通孔由所述喷气环槽导通至所述绝缘气环的内壁面；其可满足大阳极与小阳极之间的水路与气路的畅通以及小阳极与阴极之间的水路与气路的畅通,使得整个等离子发生器内部的水路连通,气路连通,同时水路和气路完全分离,互不影响。(The invention relates to the technical field of plasma generators, and provides an insulating structure for a multi-pole plasma generator, which comprises an insulating gas ring, wherein the insulating gas ring is arranged between a large anode and a small anode and/or between the small anode and the small anode; the cross section of the insulating gas ring is an annular surface, a plurality of water through holes and air guide through holes for respectively and independently circulating water flow and air flow are formed in the annular surface of the insulating gas ring, and the water through holes are not communicated with the air guide through holes; the outer circumferential surface of the insulating gas ring is also provided with a gas injection ring groove, and the gas guide through hole is communicated to the inner wall surface of the insulating gas ring through the gas injection ring groove; the water channel and the air channel between the large anode and the small anode can be smooth, and the water channel and the air channel between the small anode and the cathode can be smooth, so that the water channel and the air channel inside the whole plasma generator are communicated, and the water channel and the air channel are completely separated and do not influence each other.)

1. An insulating structure for a multi-pole plasma generator, characterized in that: the insulating gas ring is arranged between the large anode and the small anode and/or between the small anode and the small anode; the cross section of the insulating gas ring is an annular surface, a plurality of water through holes and air guide through holes for respectively and independently circulating water flow and air flow are formed in the annular surface of the insulating gas ring, and the water through holes are not communicated with the air guide through holes; the outer circumference of the insulating gas ring is further provided with a gas injection ring groove, and the gas guide through hole is communicated to the inner wall surface of the insulating gas ring through the gas injection ring groove.

2. The insulating structure for a multi-pole plasma generator according to claim 1, wherein the water passing holes are axially distributed along the annular surface of the insulating gas ring and are led from one end surface to the other end surface of the insulating gas ring, and the air guiding through holes are evenly distributed along the circumferential direction of the annular surface of the insulating gas ring.

3. The insulating structure for a multi-pole plasma generator according to claim 2, wherein the water passage holes and the air guide through holes are provided in plural pieces, the plural pieces of the water passage holes being uniformly distributed in a circumferential direction of the insulating gas ring; the plurality of air guide through holes are uniformly distributed along the circumferential direction of the insulating air ring.

4. The insulating structure for a multi-pole plasma generator according to claim 3, wherein the water passing holes and the air guide through holes are spaced apart.

5. The insulating structure for a multi-pole plasma generator according to claim 2, wherein the air guide through hole is obliquely provided in a tangential direction along the annular surface of the insulating air ring.

6. The insulating structure for a multi-pole plasma generator according to any one of claims 1 to 5, wherein the water passage hole is a kidney-shaped hole.

7. The insulating structure for the multi-pole plasma generator according to claim 1, wherein the insulating gas ring comprises a first connecting section, an air guide section and a second connecting section which are integrally arranged, the first connecting section is sleeved on the outer wall surface of the small anode, the second connecting section is sleeved on the outer wall surface of the large anode, and the inner wall surface of the air guide section is communicated with the anode hollow pipe; one end of the air guide through hole, which is positioned on the inner wall surface of the insulating air ring, is positioned on the air guide section.

8. The insulating structure for a multi-pole plasma generator according to claim 7, wherein a sealing ring is provided between an inner wall surface of the first connecting section and an outer wall surface of the small anode; and a sealing ring is arranged between the inner wall surface of the second connecting section and the outer wall surface of the large anode.

9. The insulating structure for a multi-pole plasma generator according to claim 1, wherein the insulating gas ring is made of a polymer insulating material.

Technical Field

The invention relates to the technical field of plasma generators, in particular to an insulating structure for a multi-pole plasma generator.

Background

The existing non-transferred arc plasma generator basically takes inert gas as a working medium (carrier), and the material is expensive and the cost is high; the service life of the structure is short; and is difficult to maintain. The development of plasma generators using air as a medium has been studied. In a thermal plasma generator used in the past, an arc discharge action between a cathode and an anode ionizes an inflow working gas, and an output plasma is in a jet shape and used as a plasma jet or a plasma torch. The direct current discharge method is adopted traditionally, the anode of a direct current power supply is connected with the anode of a thermal plasma generator, the cathode of the direct current power supply is connected with the cathode of the thermal plasma generator, when the applied voltage reaches a certain value, the working gas between the electrodes is ionized to form plasma, and the plasma is ejected out of a generator port at a high speed to form plasma flame. At this time, the jet flame has very high heat content, the temperature of the flame core can reach 10000-20000 ℃, and the outer flame part can also reach 3000 ℃.

However, the cathode and the anode of the conventional plasma generator are very close to each other, and the arc voltage is low, so that on one hand, complex environments such as fluid force, electromagnetic force and the like exist in the plasma torch in the working process, the arc plasma is extremely unstable and uneven, and the using effect of the plasma torch is seriously influenced; on the other hand, the working current is large and the loss is large under the same power.

Chinese patent application No. CN201220113676.8 discloses a 200KW non-transferred arc plasma generator, which is sequentially provided with a cathode, an insulating cylinder, a gap, a small anode, an adjustable insulating base, a main gas ring, two anodes, an external seal, an adjusting nut, and a large anode along the spraying direction. The cathode is solid red copper, the outer ring is a stainless steel cylinder, and a cooling water channel is arranged between the cathode and the stainless steel cylinder. Each anode is red copper with a central hole and a cooling water channel. The external threaded compression ring and the special-shaped flange are axially and adjustably connected. Introducing inert gas as auxiliary gas into the top of the small anode; the main gas and the protective gas are respectively screwed into the tops of the two anodes and the large anode. The negative electrode of the direct current power supply is connected with the cathode; the anode is connected with three anodes, and each anode is provided with a transferred arc switch.

However, each electrode inside the plasma generator is provided with a water path and a gas path, so that the plasma generator is inconvenient to install, and on the other hand, the smoothness of the water path and the gas path between the large anode and the two anodes and the smoothness of the water path and the gas path between the two anodes and the cathode cannot be met, so that the water path inside the whole plasma generator cannot be communicated, and the gas path cannot be communicated.

Disclosure of Invention

The invention aims to provide an insulating structure for a multi-pole plasma generator, which can meet the requirements of smoothness of a water path and a gas path between a large anode and a small anode and smoothness of a water path and a gas path between a small anode and a cathode, so that the water path and the gas path inside the whole plasma generator are communicated, and the water path and the gas path are completely separated and do not influence each other.

The embodiment of the invention is realized by the following technical scheme:

an insulating structure for a multi-pole plasma generator comprises an insulating gas ring, wherein the insulating gas ring is arranged between a large anode and a small anode and/or between the small anode and the small anode; the cross section of the insulating gas ring is an annular surface, a plurality of water through holes and air guide through holes for respectively and independently circulating water flow and air flow are formed in the annular surface of the insulating gas ring, and the water through holes are not communicated with the air guide through holes; the outer circumference of the insulating gas ring is further provided with a gas injection ring groove, and the gas guide through hole is communicated to the inner wall surface of the insulating gas ring through the gas injection ring groove.

Furthermore, the water through holes are axially distributed along the annular surface of the insulating gas ring and are communicated from one end surface of the insulating gas ring to the other end surface of the insulating gas ring, and the air guide through holes are evenly distributed along the tangential direction of the annular surface of the insulating gas ring.

Furthermore, the water through holes and the air guide through holes are provided with a plurality of pieces, and the plurality of pieces of water through holes are uniformly distributed along the circumferential direction of the insulating air ring; the plurality of air guide through holes are uniformly distributed along the circumferential direction of the insulating air ring.

Furthermore, the water through holes and the air guide through holes are distributed at intervals.

Furthermore, the air guide through hole is obliquely arranged along the tangential direction of the annular surface of the insulating air ring.

Further, the limbers are kidney-shaped holes.

Furthermore, the insulating gas ring comprises a first connecting section, a gas guide section and a second connecting section which are integrally arranged, the first connecting section is sleeved on the outer wall surface of the small anode, the second connecting section is sleeved on the outer wall surface of the large anode, and the inner wall surface of the gas guide section is communicated with the anode hollow pipeline; one end of the air guide through hole, which is positioned on the inner wall surface of the insulating air ring, is positioned on the air guide section.

Further, a sealing ring is arranged between the inner wall surface of the first connecting section and the outer wall surface of the small anode; and a sealing ring is arranged between the inner wall surface of the second connecting section and the outer wall surface of the large anode.

Furthermore, the insulating gas ring is made of a high polymer insulating material.

The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:

1. the water cooling system of the plasma generator changes the prior multi-path water inlet and outlet into one-path water inlet and one-path water outlet, and is convenient to install and apply.

2. The air inlet system of the plasma generator is internally provided with one path of working main air and one path of protective air which are separated by the insulating layer, and the two paths of air are not influenced by each other, so that the normal work of the generator is ensured.

3. According to the water cooling system and the air inlet system of the plasma generator, under the action of the small anode and the insulating air ring, a water path and an air path of the water cooling system and the air inlet system are completely separated and do not influence each other.

4. All electrode connecting wires and air inlet and water inlet joints of the plasma generator are arranged at the tail of the plasma generator, so that the plasma generator is simple to install and convenient to use; and after the plasma generator is inserted into the hearth, the plasma generator can be more conveniently installed and matched with the furnace body, so that the sealing effect is achieved, and the connection is convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of an integrated multi-pole plasma generator according to the present invention;

FIG. 2 is an enlarged, fragmentary, schematic view taken at A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged, fragmentary, schematic view taken at B of FIG. 1 in accordance with the present invention;

FIG. 4 is a schematic structural view of an insulating gas ring provided in the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic structural view of a small anode provided by the present invention;

FIG. 7 is a schematic view of the structure of FIG. 6 in the direction A;

FIG. 8 is a cross-sectional view taken along line A-A of FIG. 6 in accordance with the present invention;

FIG. 9 is a cross-sectional view taken along line B-B of FIG. 6 in accordance with the present invention;

fig. 10 is a schematic structural view of a housing of the integrated multi-pole plasma generator of the present invention.

Icon: 1-shell, 11-mounting flange, 2-large anode, 21-front section anode, 211-front section external spiral water tank, 22-rear section anode, 221-rear section external spiral water tank, 23-anode hollow pipe, 24-plasma nozzle, 25-large anode electrode, 26-anode insulating layer, 3-insulating gas ring, 31-water through hole, 32-gas guide through hole, 33-gas injection ring groove, 34-first connecting section, 35-gas guide section, 36-second connecting section, 4-small anode, 41-small anode electrode, 42-small anode, 43-cathode groove, 44-large anode groove, 45-plasma through hole, 46-cathode connecting section, 47-anode connecting section, 48-water through hole, 49-side wall air flue, 410-a water guide groove, 411-a water stop sheet, 5-a cathode, 51-a cathode electrode, 52-a cathode insulating layer, 6-a protective gas circuit, 61-a protective gas inlet, 62-a protective gas inlet pipe, 7-a main gas circuit, 71-a main gas inlet, 72-a main gas inlet pipe, 8-a water cooling system, 81-a water inlet, 82-a water outlet, 83-a water inlet pipe, 84-a cooling water tank, 85-a water outlet pipeline, 9-an outer sleeve, 91-an adjusting nut and 92-a fixing nut.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of this application is used, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

The embodiment provides an integrated multi-pole plasma generator, which comprises a cathode 5, an anode, a water cooling system 8 and an air inlet system; the anode comprises a large anode 2 and a plurality of small anodes 4 which are sequentially communicated, and the small anodes 4 are arranged between a cathode 5 and the large anode 2; an insulating gas ring 3 is arranged between the large anode 2 and the small anode 4 and/or between the small anode 4 and the small anode 4;

the water cooling system 8 comprises a water inlet 81 and a water outlet 82 which are positioned at the same end of the generator, and a cooling liquid channel which extends from one end of the water inlet 81 to the other end of the generator and returns to one end of the water outlet 82; the air inlet system comprises a main air path 7 and a protection air path 6;

the small anode 4 is provided with a first water path and a first gas path which are not communicated with each other, and the insulating gas ring 3 is provided with a second water path and a second gas path which are not communicated with each other; so that the main gas circuit 7, the protection gas circuit 6 and the water cooling system 8 work independently without mutual interference.

According to the invention, the water inlet 81, the water outlet 82, the recent port, the air outlet and the like are arranged at the rear part of the generator, so that the whole device is simple and convenient to use, and does not affect the plasma generation stage; in the invention, water is firstly fed through the water inlet 81 and flows to the bottom of the generator through the cooling liquid channel to cool the large anode 2, then flows back, and then sequentially cools the small anode 4 and the cathode 5, and flows out from the water outlet 82, so that the cooling water channels are naturally communicated, the different temperature areas of the generator can be well cooled in sequence, and the stable use of the generator is ensured.

In the embodiment, the small anode 4 is provided with 1 piece, and the insulating gas ring 3 is arranged between the small anode 4 and the large anode 2; through setting up anodal 4, prolonged the distance between plasma generator's negative pole 5 and the positive pole for arc plasma is more stable, even, promotes plasma torch's result of use.

In the embodiment, the axial center of the anode is provided with an anode hollow pipeline 23 for moving the electric arc, and the axial center of the cathode 5 is provided with a cathode 5 hollow pipeline for moving the electric arc; the water inlet 81 and the water outlet 82 are both arranged at one end of the cathode 5 far away from the anode, and the cooling liquid channel comprises a water inlet pipeline, an outer spiral water chute 410, a second water channel, a first water channel and a water outlet pipeline 85 which are sequentially communicated; the water inlet channel is arranged on the outer wall of the cathode 5, and the outer spiral water chute 410 is arranged on the outer wall surface of the anode; the water outlet pipeline 85 is arranged in the cathode 5 hollow pipeline and is coaxial with the cathode 5 hollow pipeline.

In this embodiment, the water inlet pipe includes a water inlet pipe 83 and a cooling water tank 84, one end of the water inlet pipe 83 is communicated with the water inlet 81, and the other end is communicated with the cooling water tank 84; the cooling water tank 84 is communicated with the outer spiral water tank 410.

In this embodiment, the outer spiral water chute 410 includes a front section outer spiral water chute 211 and a rear section outer spiral water chute 221; the large anode 2 is of a segmented structure and comprises a front-segment anode 21 and a rear-segment anode 22 which are connected in a threaded manner, the front-segment external spiral water tank 211 is arranged on the outer wall of the front-segment anode 21, and the rear-segment external spiral water tank 221 is arranged on the outer wall of the rear-segment anode 22; the cooling water tank 84 is communicated with a rear-section external spiral water tank 221, and a plasma nozzle 24 for spraying plasma is formed in the axial center of the front-end anode 21.

In this embodiment, the main air path 7 includes: a main air inlet 71, a main air inlet pipe 72, a second air path and an anode hollow pipeline 23 which are connected in sequence; the main gas inlet 71 is arranged at one end of the cathode 5 far away from the anode; the main air inlet pipe 72 is arranged on the outer wall of the cathode 5, and the second air path is used for communicating the main air inlet pipe 72 and the anode hollow pipe.

In this embodiment, the protection gas circuit 6 includes: the anode hollow pipeline 23 is connected with the shielding gas inlet 61, the shielding gas inlet pipe 62, the first gas path and the anode hollow pipeline in sequence; the protective gas inlet pipe 62 is arranged on the outer wall of the cathode 5; the first gas passage is used for communicating the shielding gas inlet pipe 62 with the anode hollow pipe 23.

In this embodiment, the cross section of the insulating gas ring 3 is an annular surface, the second water path includes a water through hole 31, and the second gas path includes a gas through hole 32 and a gas injection ring groove 33; the water through holes 31 are uniformly distributed along the axial direction of the annular surface of the insulating gas ring 3 and are communicated from one end surface of the insulating gas ring 3 to the other end surface; the air injection ring groove 33 is formed in the outer circumferential surface of the insulating air ring 3, and the air guide through hole 32 is communicated with the inner wall surface of the insulating air ring 3 through the air injection ring groove 33; the air injection ring groove 33 is communicated with the air pipe of the main air channel 7, and one end of the air guide through hole 32, which is far away from the air injection ring groove 33, is communicated with the anode hollow pipeline 23; the water passage hole 31 is not communicated with the air guide through hole 32.

The insulating gas ring 3 is a necessary device for stably supplying gas when the integrated plasma generator works, is an important guarantee for ensuring the smooth injection work of plasma torch flame, and also plays a role of connecting the small anode 4 and the large anode 2, the insulating gas ring 3 and the large anode 2 are connected into surface connection, a sealing ring is arranged on the connecting surface, so that water and gas are isolated, the connection with the small anode 4 is also surface connection, and the sealing ring is arranged at the connecting part, so that the water and gas are isolated; the water flow is ensured to circulate through the arranged water through holes 31, so that the water flowing through the outer spiral water chute 410 continuously circulates through the water through holes 31, and the large anode 2 and the small anode 4 are cooled again; the gas guide through holes 32 and the air injection ring groove 33 are arranged to ensure the circulation of the gas flow, so that the gas coming from the gas pipe of the main gas path 7 can circulate to the air injection ring groove 33 and then is communicated to the plurality of gas guide through holes 32 through the air injection ring groove 33, so that the gas flow can uniformly circulate to the anode hollow pipeline 23, and the work of the plasma generator is ensured; because the diameters of the water through holes 31 arranged axially and the air guide through holes 32 arranged radially are communicated with each other, water flow and air flow can simultaneously flow, and the water flow and the air flow are separated and work independently without leakage.

In the present embodiment, the water through holes 31 and the air guide through holes 32 are provided in plural, and the plural water through holes 31 are uniformly distributed in the circumferential direction of the insulating gas ring 3; a plurality of the air guide through holes 32 are uniformly distributed in the circumferential direction of the insulating air ring 3.

In the present embodiment, the water through holes 31 and the air guide through holes 32 are spaced apart from each other.

In the embodiment, the water through holes 31 are kidney-shaped holes, the kidney-shaped water through holes 31 are uniformly distributed in the axial direction, and the water is distributed in a multi-hole mode, so that the water flow is uniform, the trafficability is good, and more heat is taken away.

In this embodiment, the air guide through holes 32 are obliquely arranged along the circumferential direction of the annular surface of the insulating gas ring 3, the air guide through holes 32 distributed along the radial direction are formed between the gaps of the axial water through holes 31, and the air guide through holes 32 are distributed along the circumferential direction, so that the air intake rotates along the inner hole wall of the insulating gas ring 3 and extends into the anode hollow pipe 23 of the large anode 2, and the plasma is ensured to be ejected in a rotating manner.

In this embodiment, the insulating gas ring 3 includes 4 integrally arranged, the first connecting section 34 is sleeved on the outer wall surface of the small anode 4, specifically, a threaded connection is adopted, the second connecting section 36 is sleeved on the outer wall surface of the large anode 2, specifically, a threaded connection is adopted, and the inner wall surface of the gas guiding section 35 is communicated with the anode hollow pipe 23; one end of the air guide through hole 32, which is positioned on the inner wall surface of the insulating air ring 3, is positioned on the air guide section 35.

In this embodiment, a sealing ring is arranged between the inner wall surface of the first connecting section 34 and the outer wall surface of the small anode 4, and a sealing ring is arranged between the inner wall surface of the second connecting section 36 and the outer wall surface of the large anode 2; through setting up the sealing washer to play the effect of isolation water and gas.

In this embodiment, the insulating gas ring 3 is made of a polymer insulating material, so as to have high temperature resistance and high insulation.

In this embodiment, one end of the small anode 4 close to the cathode 5 is provided with a cathode slot 43 for inserting the cathode 5 end, one side of the small anode 4 close to the large anode 2 is provided with a large anode slot 44 for inserting the large anode 2 end, and the cathode slot 43 and the large anode slot 44 are connected through a plasma via 45.

In this embodiment, the small anode 4 includes an anode connecting section 47 and a cathode 5 connecting section 46, the anode connecting section 47 and the cathode 5 connecting section 46 are both provided with external threads, and the anode connecting section 47 is in threaded connection with the first connecting section 34 of the insulating gas ring 3, so as to better perform the gas-water separation function; the cathode 5 connecting section 46 is in threaded connection with the cathode 5 end, and is conductive and separates water flow; and the outer wall surfaces of the anode connecting section 47 and the cathode 5 connecting section 46 are provided with sealing rings, so that water and gas are better isolated.

In this embodiment, the first waterway includes a water through hole 48, and the first waterway includes a sidewall air passage 49; the water through hole 48 is led from one end surface of the small anode 4 to the other end surface, and the water through hole 48 is communicated with the water through hole 31.

In this embodiment, the outer wall of the small anode 4 is provided with a water chute 410 in a circumferential direction, the water chute 410 is opened from the outer wall of the small anode 4 to the inner wall, one side of the water chute 410 is communicated with the water through hole 48, and the other side of the water chute 410 is communicated with the water through hole 31.

In this embodiment, the bottom wall of the water chute 410 is close to the plasma via 45, so as to improve the cooling effect on the high-temperature plasma.

In this embodiment, the water blocking plate 411 is arranged inside the water guide groove 410 and axially arranged along the water guide groove 410, a gap for water flow circulation is reserved between the bottom of the water blocking plate 411 and the bottom of the water guide groove 410, the top of the water blocking plate 411 extends out of the water guide groove 410 and is hermetically connected with the side wall of the shell 1 or the cathode 5, the water blocking plate 411 divides the water guide groove 410 into two independent parts, the water guide groove 410 on one side of the water blocking plate 411 is communicated with the water through hole 48, and the other side of the water blocking plate 411 is communicated with the water through hole 31.

In this embodiment, a plurality of water through holes 48 are uniformly arranged along the circumferential direction of the side surface of the small anode 4; through setting up more water holes 48 to increase discharge, it is favorable to even heat dissipation to cross water hole 48 evenly distributed.

In this embodiment, the distance between the bottom of the water-stop sheet 411 and the bottom wall of the water chute 410 is 1/15-1/10 of the height of the water chute 410, so that the coolant flow entering the water chute 410 through the water through hole 31 can completely circulate in the water chute 410 from high to low and then from low to high, the circulation time and the circulation path of the coolant flow in the water chute 410 are increased, and the cooling effect on the plasma passing empty part of the small anode 4 is more efficiently maintained.

In the present embodiment, the side wall gas duct 49 is a gas duct formed between the inner side wall of the cathode container 43 and the end of the cathode 5 after the cathode 5 is inserted into the cathode container 43, through which gas passes; so that the shielding gas is circulated therethrough and flows through the side wall gas duct 49 to the plasma passing through and into the anode hollow tube 23.

In this embodiment, the small anode 4 is made of red copper, and has high thermal conductivity and excellent electrical conductivity, and generates less heat during use, and the electrothermal conversion efficiency is high.

The small anode 4 plays a role of being opened and closed in the integrated generator and is an important device for connecting the cathode 5 and the large anode 2, the middle plasma through hole 45 is a high-temperature plasma channel, so the cooling of the device is very important, in addition, the generator with the integrated design is added, a water flow channel passes through the large anode 2 and the cathode 5, so the water path design of the small anode 4 is more complex, and the heat dissipation problem of the small anode 4 is ensured at the same time, the small anode 4 is uniformly distributed along the circumference, holes are punched in the radial direction and are provided with water through holes 48, water flows from the water through holes 31 on the insulating air ring 3 to the water through holes 48, and it needs to be noted that the water through holes 48 are consistent in number and position direction with the water through holes 31, so that the water flows smoothly; in order to improve the cooling effect of the water flow on the small anode 4 and the cooling effect on the plasma channel and the plasma via hole 45, the water chute 410 is further arranged on the small anode 4, and the water stop sheet 411 is arranged in the water chute 410, so that the water flow flowing through the water through hole 31 forms a U-shaped channel in the water chute 410, the flow path of the water flow is prolonged, the cooling effect of the water flow is ensured, the heat of the high-temperature plasma at the plasma via hole 45 is taken away in an accelerated manner, and the cooling effect on the plasma generator is improved.

In this embodiment, outlet conduit 85 follows the 5 axial direction centers of negative pole set up, outlet conduit 85 lateral wall passes through the connecting pipe and crosses water hole 48 intercommunication, the outlet pipe extends the one end of negative pole 5 and forms delivery port 82, and rivers flow to the connecting pipe through water hole 48 and then enter into outlet conduit 85, flow out by delivery port 82 again, form a water cooling system 8 that advances water all the way from this, cool off big positive pole 2, anodal 4 and the negative pole 5 of plasma generator, easy to assemble and use.

The water cooling system 8 comprises a water inlet pipe 83, a cooling water tank 84, a front-section external spiral water tank 211, a rear-section external spiral water tank 221, a water through hole 31, a water guide groove 410, a water through hole 48 and a water outlet pipeline 85 which are connected in sequence; the water flow flows into the water inlet pipe 83 and the cooling water tank 84 through the water inlet 81, and the cooling water is conducted to the front-stage outer spiral water tank 211 and the rear-stage outer spiral water tank 221 through the cooling water tank 84, so that the large anode 2 with the highest temperature is cooled; the water flow continuously circulates, the water flow is conveyed into the water through hole 31 of the insulating air ring 3 through the rear-section external spiral water tank 221, then the water flow is conveyed into the water guide groove 410 of the small anode 4 through the water through hole 31, the small anode 4 is cooled, the cooling water continuously circulates to the water through hole 48 of the small anode 4, the water flow is conveyed to the water outlet pipeline 85 through the water through hole 48, the lower-temperature cathode 5 is cooled, a water cooling system 8 with one path of water inflow and one path of water outflow is formed, the effect of sequentially cooling the large anode 2, the small anode 4 and the cathode 5 of the plasma generator is achieved, and the plasma generator is convenient to install and use.

The main gas path 7 includes: the main gas inlet pipe 72, the air injection ring groove 33, the gas guide through hole 32 and the anode hollow pipeline 23 are connected in sequence; the working gas enters the main gas inlet pipe 72 from the main gas inlet 71, and the main gas inlet pipe 72 sends the gas to the gas injection ring groove 33 of the insulating gas ring 3, so that the gas is uniformly distributed in the gas guide through holes 32 through the gas injection ring groove 33 and then is discharged to the anode hollow pipeline 23 through the gas guide through holes 32, and the plasma flame is generated during working.

The protection gas circuit 6 includes: the protective gas inlet pipe 62, the side wall air flue 49, the plasma via hole 45 and the anode hollow pipeline 23 are connected in sequence; the protective gas enters the protective gas inlet pipe 62 from the protective gas inlet 61, then enters the side wall air passage 49 and the plasma via hole 45, and then enters the anode hollow pipeline 23 to be converged with the protective gas, so that the protective effect is achieved, and the working stability is ensured.

The gas path of the invention is two paths: one path is main gas, the other path is protective gas, and through the separation design of the insulating layer, the two paths of gas are not influenced with each other, so that the normal work of the generator is ensured; in a similar way, the water path and the air path are not influenced mutually, and the air path and the water path are completely separated by arranging the small anode 4 and the insulating air ring 3 without influencing each other

In the embodiment, the device also comprises a shell 1, wherein the shell 1 is made of 316 stainless steel, so that the device is corrosion-resistant and durable; the shell 1 is in a straight cylinder shape, and the large anode 2, the small anode 4 and the cathode 5 are sequentially arranged in the shell 1 along the direction from one end of the bottom end to one end of the top end of the shell 1; the top end of the shell 1 is provided with a mounting flange 11, and the mounting flange 11 is provided with a main gas inlet communicated with an air inlet system, a protective gas inlet, a water inlet 81 communicated with a water cooling system 8, a water outlet 82, a small anode 4 electrode communicated with a small anode 4, a large anode 25 communicated with a large anode 2 and a cathode 51 communicated with a cathode 5.

All the electrode connecting wires, the air inlet ports and the water inlet and outlet ports are arranged at the rear end of the generator, so that the device is simple in arrangement and convenient to install.

In this embodiment, the water inlet pipe and the cooling water tank 84 are both formed by opening in the side wall of the housing 1, one end of the water inlet pipe is communicated with the cooling water tank 84, and the other end of the water inlet pipe is communicated with the water inlet 81;

in the present embodiment, a cathode insulating layer 52 is disposed between the inner sidewall of the housing 1 and the outer sidewall of the cathode 5, and an anode insulating layer 26 is disposed between the inner sidewall of the housing 1 and the outer sidewall of the anode;

a small anode 4 conducting ring is also arranged in the cathode insulating layer 52, one end of the small anode 4 conducting ring is connected with the small anode 4 electrode at the rear end of the generator, and the other end of the small anode 4 conducting ring extends to the cathode 5 connecting section 46 of the small anode 4 and is in threaded connection with the small anode 4, so that the conducting effect is achieved;

the main air inlet pipe 72 is arranged between the cathode insulating layer 52 and the inner side wall of the shell 1, one end of the main air inlet pipe 72 is communicated with the air injection ring groove 33, and the other end of the main air inlet pipe 72 is communicated with a main air inlet;

the shielding gas inlet pipe 62 is arranged in the cathode insulating layer 52, one end of the shielding gas inlet pipe 62 is communicated with the side wall air passage 49, and the other end of the shielding gas inlet pipe 62 is communicated with the shielding gas inlet.

In this embodiment, the top end of the mounting flange 11 is further provided with a tubular outer sleeve 9, the outer sleeve 9 is sleeved outside the water outlet pipe 85, and the outer sleeve 9 is provided with an adjusting nut 91 and a fixing nut 92 for adjusting and fixing during mounting; therefore, the length of the rear end of the generator can be adjusted according to the requirement, and the generator is very suitable for field installation; the generator can be conveniently inserted into the reaction cavity behind the hearth, and the mounting flange 11 at the rear end is directly connected with the fixed flange bolt of the furnace body, thereby achieving the sealing effect and being convenient to connect; in addition, the diameter of the outer sleeve 9 can be modified according to the use requirement, and the use is more convenient.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.