CN211606909U - Large anode and ultrahigh-temperature plasma torch - Google Patents
Large anode and ultrahigh-temperature plasma torch Download PDFInfo
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- CN211606909U CN211606909U CN202020440278.1U CN202020440278U CN211606909U CN 211606909 U CN211606909 U CN 211606909U CN 202020440278 U CN202020440278 U CN 202020440278U CN 211606909 U CN211606909 U CN 211606909U
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Abstract
The utility model discloses a large anode, which comprises a main body and a shell, wherein the shell is wrapped on the main body; the main body is cylindrical and is provided with a central through hole, the outer wall of the main body is provided with a plurality of spiral grooves, a spiral bulge is arranged between every two spiral grooves, and the spiral bulges are tightly connected with the shell; the main body is also provided with a plurality of water flow channels which longitudinally penetrate through the wall of the main body; the water-cooling channel is used for injecting cooling water, and the cooling water directly passes through the main body wall, so that a better cooling effect is achieved, the temperature of the main body wall of the large anode is kept in a proper range, the service life of the large anode is prolonged, and the large anode has a better thermal compression effect.
Description
Technical Field
The utility model relates to the technical field of plasma, especially a big positive pole and ultra-high temperature plasma torch.
Background
The first stainless steel layer of parcel one deck on the spiral outer wall of traditional big positive pole of plasma, it has the second stainless steel layer still to wrap up outside first stainless steel layer, thereby all form the water-cooling layer between spiral outer wall and first stainless steel layer and between the second stainless steel layer, first water-cooling layer between spiral outer wall and the first stainless steel layer, second water-cooling layer between first stainless steel layer and the second stainless steel layer, make cooling water follow first water-cooling layer flow direction second water-cooling layer, thereby cool down big positive pole through two-layer water-cooling layer. However, such a water-cooling structure cannot achieve a cooling effect suitable for the performance of a large anode of a plasma generator generating an ultra-high temperature. Because the wall of the large anode main body for large-capacity ultrahigh temperature is relatively thick, the temperature of the large anode main body is difficult to be reduced to a proper range only by cooling from the outer wall of the spiral. When the temperature of the large anode is in a high state for a long time, the working life of the large anode is short; and because the cooling effect to big positive pole is limited, lead to being close to the gas of big positive pole main part center through-hole inner wall to be difficult to receive better cooling, can't form the better cold airflow of effect for the hot compression effect of electric arc is relatively poor. Therefore, the large anode with large capacity and ultrahigh temperature needs to be designed with a water cooling device with better cooling effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a large anode and an ultrahigh temperature plasma torch.
The purpose of the utility model is realized through the following technical scheme:
in a first aspect, a large anode comprises a main body and a shell, wherein the shell is wrapped on the main body; the main body is cylindrical and is provided with a central through hole, the outer wall of the main body is provided with a plurality of spiral grooves, a spiral bulge is arranged between every two spiral grooves, and the spiral bulges are tightly connected with the shell; the main body is also provided with a plurality of water flow channels which longitudinally penetrate through the wall of the main body.
Furthermore, the main body is provided with a cathode connecting end and a plasma nozzle end, the plasma nozzle end is provided with a nozzle, and the nozzle is circular or crescent.
Furthermore, a first sealing groove and a second sealing groove are formed at the end, close to the cathode connecting end, of the main body, and a tool withdrawal groove and a third sealing groove are also formed at the end, close to the plasma nozzle, of the main body; the first sealing groove, the second sealing groove, the third sealing groove and the tool withdrawal groove are all annular grooves.
Furthermore, a first sealing ring and a second sealing ring which are matched with each other are arranged on the first sealing groove and the second sealing groove, and the diameter of the first sealing ring is smaller than that of the second sealing ring.
Furthermore, the water flow channels are communicated with the tool withdrawal grooves, and the spiral grooves are communicated with the tool withdrawal grooves; and a third sealing ring matched with the third sealing groove is arranged in the third sealing groove.
Furthermore, a water inlet and a water outlet are also formed on the shell, and a water inlet loop and a water outlet loop are also formed between the shell and the main body; the water inlet is communicated with the water inlet loop, and the water outlet is communicated with the water outlet loop; the water inlet circular channel is also communicated with the plurality of water flow channels, and the water outlet circular channel is also communicated with the plurality of spiral grooves.
Furthermore, the end face of the plasma nozzle end is provided with at least two limiting holes.
Further, the main body is made of red copper, and the shell is made of stainless steel such as 304 and 310.
In a second aspect, an ultra high temperature plasma torch comprising a large anode as described previously.
The utility model has the advantages of it is following:
1. the outer wall of the large anode is only wrapped by a layer of stainless steel shell, the shell is matched with the outer wall of the large anode to form a closed spiral groove, a plurality of longitudinally-through water flow channels are formed in the wall of the large anode main body, and injected cooling water firstly passes through the water flow channels and then is discharged through the spiral groove; because the cooling water directly passes through the main body wall, the cooling effect is better, the temperature of the main body wall of the large anode is kept in a proper range, and the service life of the large anode is prolonged;
2. the plasma torch has the advantages that the plasma torch has a good thermal compression effect, gas close to the inner wall of the central through hole of the main body has a good cooling effect, cold airflow can be formed, arc current flows through the central part of the central through hole of the main body, electric arcs are compressed towards the center, and accordingly plasma flames with high flow speed and high concentration are formed.
Drawings
FIG. 1 is a schematic cross-sectional view of a large anode body and housing;
FIG. 2 is a schematic cross-sectional view A-A of a large anode body;
FIG. 3 is a schematic cross-sectional view B-B of a large anode body;
FIG. 4 is a schematic cross-sectional view B-B of a large anode body;
FIG. 5 is a schematic structural view of a large anode body;
in the figure, 100-main body, 110-spiral groove, 111-spiral protrusion, 120-water flow channel, 130-cathode connecting end, 140-plasma nozzle end, 150-first sealing groove, 160-second sealing groove, 170-tool withdrawal groove, 180-third sealing groove, 190-limiting hole, 200-shell, 210-water inlet, 211-water inlet loop, 220-water outlet and 221-water outlet loop.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following description will clearly describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The present embodiment provides a large anode, as shown in fig. 1 to 5, which includes a main body 100 and a casing 200, wherein the casing 200 is wrapped on the main body 100; the main body 100 is cylindrical and has a central through hole, the outer wall of the main body 100 is provided with a plurality of spiral grooves 110, a spiral protrusion 111 is arranged between each spiral groove 110, and the spiral protrusions 111 are tightly connected with the shell 200, so that cooling water in each spiral groove 110 cannot flow through each other; the large anode is used for generating ultrahigh temperature, the wall of the main body 100 is generally thicker, and a plurality of water flow channels 120 longitudinally penetrating through the wall of the main body 100 can be formed in the main body 100; during operation, cooling water is injected from the water flow channel 120 and finally discharged through the spiral groove 110.
The two ends of the main body 100 in the shape of a cylinder are respectively a cathode connecting end 130 and a plasma nozzle end 140, the cathode connecting end 130 is used for connecting a cathode structure of a plasma torch, the plasma nozzle end 140 is provided with a nozzle, the nozzle is circular or crescent-shaped, and the nozzle is used for ejecting ultrahigh-temperature plasma flame; the central through hole of the lower portion of the body 100, i.e., the side close to the end surface of the plasma nozzle end 140, has a funnel shape.
The large anode is used in an ultrahigh-temperature plasma torch, and has a wide application scene, such as quenching of metal surfaces, burning of hazardous wastes and the like, and particularly when hardening of metal surfaces of rails, switch rails and the like. As shown in fig. 5, when the nozzle is crescent-shaped, the spot formed after the metal surface is quenched can be crescent-shaped, so that the quenched spot is not easy to fall off, thereby not only realizing the metal surface hardening, but also prolonging the service life of the metal surface hardening.
A first sealing groove 150 and a second sealing groove 160 are formed in the main body 100 near the cathode connecting end 130; a tool withdrawal groove 170 and a third sealing groove 180 are further formed in the main body 100 close to the plasma nozzle end 140; the first seal groove 150, the second seal groove 160, the third seal groove 180 and the relief groove 170 are all annular grooves; the widths and heights of the first seal groove 150, the second seal groove 160 and the third seal groove 180 are all the same, and the widths and heights of the groove bodies can be changed according to actual use conditions; the relief groove 170 facilitates positioning when the spiral groove 110 is opened, and a space formed by the relief groove 170 and the housing 200 may be used for circulation of cooling water.
The first seal groove 150 and the second seal groove 160 are provided with a first seal ring and a second seal ring which are matched with each other, and in the embodiment, the diameter of the first seal ring is smaller than that of the second seal ring; a first sealing ring can be closely fitted to the housing 200 to prevent cooling water such as the water flow passage 120 from flowing out of the large anode, and a second sealing ring can be closely fitted to the housing 200 to prevent the cooling water in the spiral groove 110 from flowing back to the water flow passage 120.
It is conceivable that the first, second, and third seal grooves 180 may not be formed, but when not formed, the large anode body 100 is connected to the case 200 by welding at the positions of the first seal groove 150, the second seal groove 160, and the third seal groove 180, and no gap is formed to allow cooling water to flow out; in this case, it is also unnecessary to install the first seal ring, the second seal ring, and the third seal ring.
The plurality of water flow channels 120 in the main body 100 are all communicated with the tool withdrawal groove 170, and the plurality of spiral grooves 110 are all communicated with the tool withdrawal groove 170, so that the water flow channels 120 are communicated with the spiral channels through the tool withdrawal groove 170, and cooling water can circulate when the cooling water machine works; a matched third sealing ring is arranged in the third sealing groove 180; the third sealing ring, which has a diameter greater than that of the second sealing ring in this embodiment, is tightly fitted to the housing 200 to prevent the cooling water in the relief groove 170 from flowing out of the large anode.
As shown in fig. 1, the casing 200 is further provided with a water inlet 210 and a water outlet 220, a water inlet loop 211 and a water outlet loop 221 are further formed between the casing 200 and the main body 100, and a second sealing ring between the water inlet loop 211 and the water outlet loop 221 can effectively prevent cooling water from circulating; the water inlet 210 is communicated with the water inlet loop 211, and the water outlet 220 is communicated with the water outlet loop 221; the water inlet ring 211 is further communicated with the plurality of water flow channels 120, and the water outlet ring 221 is further communicated with the plurality of spiral grooves 110.
When the large anode works, cooling water is injected from the water inlet 210 and then flows into the water inlet loop 211, the cooling water in the water inlet loop 211 flows into the water outlet tank through the water flow channels 120, when the water outlet tank is filled with the cooling water, the cooling water gradually flows into the water outlet loop 221 from the spiral grooves 110, and finally is discharged through the water outlet 220, so that primary heat exchange is completed; because the cooling water directly flows through the main body of the large anode and is closer to the central through hole of the main body 100 for generating plasma flame, the cooling water has better cooling effect, so that the main body 100 of the large anode is not in a higher temperature state for a long time, thereby prolonging the service life; secondly, because the cooling effect is better, the temperature of the inner wall of the main body 100 is relatively lower, so that the gas near the inner wall of the main body 100 can form cold airflow, and because the temperature difference and the ionization degree difference exist between the gas near the inner wall of the main body 100 and the gas at the center, the electric arc is compressed towards the center and flows through the center part of the central through hole of the main body 100, so that plasma flame with higher flow speed and more concentration is formed; it can be seen that the water cooling device for the large anode can make the service life of the water cooling device longer, and generate higher temperature and higher spraying speed.
It should be noted that, if the water flow channel 120 is provided on the inner wall of the main body 100, better cooling effect can be achieved, but the difficulty of processing the main body 100 parts in this way will be increased, and the performance parameters of the plasma flame may be affected; in this case, it may be possible to improve the performance parameters of the plasma flame by varying the diameter of the central through hole of the body 100.
The anode and cathode of the plasma torch are separate and separable parts, which need to be assembled when in use; in order to facilitate the installation, the end face of the plasma nozzle end is further provided with at least two limiting holes 190, and the limiting holes 190 are used for limiting the movement of the anode and facilitating the assembly of the cathode and the anode.
Since the anode needs better electrical and thermal conductivity, the material for manufacturing the main body 100 is usually red copper or other alloy, and the material for manufacturing the housing 200 is usually stainless steel material such as 304, 310, etc.
Another embodiment of the present invention is an ultra high temperature plasma torch, comprising the above large anode for generating plasma flame at ultra high temperature.
Claims (9)
1. A large anode is characterized by comprising a main body and a shell, wherein the shell is wrapped on the main body; the main body is cylindrical and is provided with a central through hole, the outer wall of the main body is provided with a plurality of spiral grooves, a spiral bulge is arranged between every two spiral grooves, and the spiral bulges are tightly connected with the shell; the main body is also provided with a plurality of water flow channels which longitudinally penetrate through the wall of the main body.
2. The large anode of claim 1, wherein the body has a cathode connection end and a plasma nozzle end, the plasma nozzle end being open with a nozzle that is circular or crescent shaped.
3. The large anode of claim 2, wherein the main body has a first sealing groove and a second sealing groove near the cathode connection end, and the main body has a tool withdrawal groove and a third sealing groove near the plasma nozzle end; the first sealing groove, the second sealing groove, the third sealing groove and the tool withdrawal groove are all annular grooves.
4. The large anode according to claim 3, wherein the first sealing groove and the second sealing groove are provided with a first sealing ring and a second sealing ring which are matched with each other, and the diameter of the first sealing ring is smaller than that of the second sealing ring.
5. The large anode according to claim 3 wherein a plurality of said water flow channels are each in communication with said withdrawal groove and a plurality of said helical grooves are each in communication with said withdrawal groove; and a third sealing ring matched with the third sealing groove is arranged in the third sealing groove.
6. The large anode according to claim 1, wherein the outer shell is further provided with a water inlet and a water outlet, and a water inlet loop and a water outlet loop are further formed between the outer shell and the main body; the water inlet is communicated with the water inlet loop, and the water outlet is communicated with the water outlet loop; the water inlet circular channel is also communicated with the plurality of water flow channels, and the water outlet circular channel is also communicated with the plurality of spiral grooves.
7. The large anode according to claim 3, wherein the end face of the plasma nozzle end is further provided with at least two limiting holes.
8. The large anode according to claim 1, wherein the main body preparation material is red copper, and the shell preparation material is stainless steel such as 304, 310 and the like.
9. An ultra high temperature plasma torch comprising a large anode according to any of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020440278.1U CN211606909U (en) | 2020-03-30 | 2020-03-30 | Large anode and ultrahigh-temperature plasma torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020440278.1U CN211606909U (en) | 2020-03-30 | 2020-03-30 | Large anode and ultrahigh-temperature plasma torch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211606909U true CN211606909U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020440278.1U Active CN211606909U (en) | 2020-03-30 | 2020-03-30 | Large anode and ultrahigh-temperature plasma torch |
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|---|---|
| CN (1) | CN211606909U (en) |
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2020
- 2020-03-30 CN CN202020440278.1U patent/CN211606909U/en active Active
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