Plasma torch abatement device

Abstract

The utility model discloses a kind of plasma torch elimination devices, including cutting torch main body, compressed gas tank and corrugated sleeve, the corrugated sleeve is set to cutting torch main body outside, and its upper and lower ends are respectively communicated with gas ring and gas distribution ring;The outside of gas ring is equipped with the joint seat for connecting compressed gas tank, electromagnetic control valve is arranged between joint seat and gas ring;Compressed gas tank is installed in airbag frame, and gas communication is realized by joint seat cone head. Corrugated sleeve is equipped with the inner flow channel of multiple Tesla valve structures, for guiding compressed gas to form high-speed disturbance flow field, enhance cooling effect;Gas distribution ring is equipped with multiple radial micro gas outlet holes, for forming multi-angle disturbance airflow in plasma nozzle area, to quickly eliminate residual flame. The device structure is compact, heat exchange efficiency is high, gas cylinder can be quickly replaced, effectively improve the cooling performance and operating safety of plasma equipment.

Description

Technical Field

[0001] This utility model relates to the field of plasma cutting technology, specifically a plasma torch elimination device. Background Technology

[0002] Plasma cutting torches are widely used in high-temperature processing such as metal cutting and welding. Their principle is to locally melt and remove metal materials using a high-temperature plasma arc gas flow, offering advantages such as high cutting precision and a small heat-affected zone. However, for a short period after plasma cutting stops, high-temperature gas flow remains in the plasma channel, known as "residual torch heat flow." This residual heat is difficult to dissipate in time, posing a risk of burns to operators and affecting equipment cooling efficiency and the stability of subsequent operations.

[0003] Currently, while some traditional plasma cutting torch devices have attempted to integrate air-cooling or water-cooling structures to assist cooling, they generally suffer from problems such as complex structures, high installation space requirements, uneven airflow disturbance, and low temperature reduction efficiency. For example, some solutions use a simple annular shroud to spray airflow around the plasma nozzle for cooling, but due to the low jet velocity and single angle, it cannot effectively disrupt the central thermal field of the residual plasma flow, resulting in limited cooling efficiency.

[0004] Furthermore, conventional gas spray cooling structures are mostly straight flow channels, which cannot achieve multiple deflection and turbulence under space-constrained conditions. This results in a simple cooling gas flow field distribution and limited heat exchange area, making it difficult to achieve efficient temperature and pressure drop in a very short time. The connection between the gas source and the channel is mostly a threaded or fixed welded structure, which is inconvenient for replacing gas cylinders or cleaning and maintenance, reducing the maintainability and practicality of the equipment.

[0005] Therefore, existing technologies still have many shortcomings in achieving rapid elimination of plasma flames, multi-angle turbulence cooling, and improving the heat exchange efficiency of cooling channel structures. There is an urgent need for a plasma torch elimination device with a compact structure, high gas flow efficiency, rapid cooling response, and modular replacement capability to improve equipment safety and working efficiency. Utility Model Content

[0006] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0007] Therefore, the technical solution adopted by this utility model is: a plasma torch elimination device, including: a cutting torch body, a compressed gas tank, a corrugated sleeve, a gas distribution ring, a gas distribution ring, a gas bag frame, a connecting seat, and an electromagnetic control valve, etc. It has a compact structure, fast response, and modular assembly and disassembly, and is suitable for the integration of auxiliary cooling systems of various plasma cutting equipment.

[0008] The corrugated sleeve is disposed on the outer surface of the cutting torch body, with its upper and lower ends connected to the gas distribution ring and the gas distribution ring, respectively. Compressed gas can form a cooling circuit along the outer wall of the plasma flame channel through this path. This structure, through its circumferential arrangement, brings the gas flow path close to the heat source area, effectively expanding the cooling area, improving heat exchange efficiency, and quickly removing residual heat. The inner wall of the corrugated sleeve has several internal flow channels evenly distributed in a circumferential direction. These channels adopt a Tesla valve structure, consisting of multiple offset guide vanes arranged axially. This structure can form a continuous deflection and acceleration flow field when the gas flows in one direction, enhancing the disturbance contact area with the inner wall, thereby increasing the heat conduction rate and achieving efficient cooling.

[0009] In a preferred embodiment, the gas distribution ring is further configured such that: the gas distribution ring is used to receive compressed gas and uniformly guide it into the inner flow channel of the corrugated sleeve; the gas distribution ring is located at the end of the corrugated sleeve away from the gas source, and its interior is provided with a plurality of radially distributed micro gas outlet holes for exporting gas to the periphery of the plasma nozzle.

[0010] Specifically, this structure can create multi-angle turbulent airflow at the plasma nozzle, which disrupts and dilutes the central region of the jet, weakens the residual heat beam in the flame core, and improves the arc extinguishing effect.

[0011] In a preferred embodiment, the cutting torch body is further configured such that: an airbag frame is provided on the outside for housing a compressed air tank, and the airbag frame is connected to the air distribution ring via a coupling seat. The top of the coupling seat is provided with an integral cone head with a threaded interface on the surface, which screws into the end of the compressed air tank.

[0012] Specifically, this structure not only ensures a sealed connection for compressed gas, but also facilitates the replacement and securing of high-pressure gas cylinders, and has excellent modular adaptability.

[0013] In a preferred embodiment, the compressed gas cylinder may be a high-pressure carbon dioxide cylinder or a nitrogen cylinder, and the airbag frame is provided with a snap-fit ​​mechanism arranged opposite to the coupling seat to achieve rapid loading, unloading and positioning of the compressed gas cylinder.

[0014] Specifically, this structure simplifies the gas cylinder replacement process, is suitable for scenarios with frequent consumable replacements, and improves equipment maintenance efficiency.

[0015] In a preferred embodiment, an electromagnetic control valve is further configured such that: an electromagnetic control valve is provided between the coupling seat and the air distribution ring, with its two ends connected to the cone head and the air distribution ring respectively, and its opening or closing state is controlled by an external control circuit.

[0016] Specifically, this structure enables automated, on-demand release control of cooling gas, enhancing the overall system's intelligent response capabilities and energy-saving performance.

[0017] In a preferred embodiment, the corrugated sleeve is made of metal and has multiple annular protrusions on its inner wall to increase the heat conduction area and further improve the heat exchange effect during airflow disturbance.

[0018] Specifically, this design can effectively meet the needs of high-frequency, multi-cycle plasma heat load operation and extend the equipment life.

[0019] In a preferred embodiment, the gas distribution ring is further configured such that multiple micro-vent holes are radially distributed, which can uniformly guide the gas to the space surrounding the plasma nozzle, forming a stable surrounding turbulent gas field.

[0020] Specifically, this structure effectively improves the coverage of disturbances around the plasma jet, enhances cooling uniformity, and prevents localized overheating residue.

[0021] In summary, this utility model, through structural optimization and functional synergy, significantly improves the cooling rate and arc extinguishing effect of the plasma nozzle area while ensuring compact integration. It has the advantages of simple operation, fast control response, and high safety, and is suitable for heat treatment auxiliary systems in various industrial plasma cutting scenarios.

[0022] The beneficial effects achieved by this utility model are as follows:

[0023] 1. In this utility model, by setting a corrugated sleeve on the outside of the cutting torch body and adopting a Tesla valve-type internal flow channel structure, the compressed gas forms an accelerated flow during the flow process, and significantly enhances the heat exchange effect with the inner wall of the gas channel, thereby achieving efficient cooling of the residual heat flow of the plasma flame, improving the cooling efficiency and safety of the device.

[0024] 2. In this utility model, by setting an integrated electromagnetic control valve and a quick-release compressed gas tank snap-fit ​​structure, the precise release control of cooling gas and the rapid replacement of gas source components are realized, which improves the automation control level and maintenance convenience of the whole machine and is suitable for the arc extinguishing and cooling needs of various plasma equipment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0026] Figure 2 This is a cross-sectional structural diagram of one embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of a corrugated sleeve structure according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the cross-sectional structure of a corrugated sleeve according to an embodiment of the present invention.

[0029] Figure label:

[0030] 100. Cutting torch body; 110. Airbag frame; 120. Air distribution ring; 121. Connecting seat; 122. Electromagnetic control valve;

[0031] 200, Compressed air tank; 300, Corrugated sleeve; 310, Air distribution ring; 320, Inner flow channel. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0033] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0034] The following describes, with reference to the accompanying drawings, some embodiments of a plasma torch elimination device provided by this utility model.

[0035] Combination Figures 1-4 As shown, the present invention provides a plasma torch elimination device, comprising: a cutting torch body 100, a compressed gas tank 200, and a corrugated sleeve 300 integrated on the outer surface of the cutting torch body 100. The corrugated sleeve 300 is a hollow tubular structure, with a gas distribution ring 120 and a gas distribution ring 310 fixedly connected to its upper and lower ends, respectively. The gas distribution ring 120 has a gas communication structure with the cutting torch body 100 to guide compressed gas into the corrugated sleeve 300. The gas distribution ring 310 is located at the lower end of the corrugated sleeve 300 and adjacent to the plasma nozzle. It has multiple radially distributed micro-vent holes inside to spray cooling gas at multiple angles, thereby disturbing and cooling the plasma flame.

[0036] The outer surface of the gas distribution ring 120 is fixedly mounted with a coupling seat 121. The coupling seat 121 is an integrally formed structure, and its top is provided with a conical structure for installing the compressed air tank 200. The surface of the conical head is provided with threads for screwing the port of the compressed air tank 200 to ensure reliable sealing.

[0037] The cutter body 100 is provided with an airbag frame 110 to accommodate the compressed air tank 200. The compressed air tank 200 is detachably snapped into the inside of the airbag frame 110, and the bottom end of the compressed air tank 200 is inserted into the coupling seat 121 through a conical head to form a stable gas input connection.

[0038] In this embodiment, an electromagnetic control valve 122 is provided between the connecting seat 121 and the gas distribution ring 120. One end of the electromagnetic control valve 122 is connected to the cone in the connecting seat 121, and the other end is connected to the gas distribution ring 120. It is used to control the release or stop of cooling gas according to the instructions of the external control circuit, and has good responsiveness and control accuracy.

[0039] Furthermore, the inner wall of the corrugated sleeve 300 is provided with multiple circumferentially evenly arranged internal flow channels 320. These internal flow channels 320 employ a Tesla valve structure, consisting of multiple bent guide vanes arranged sequentially along the axial direction of the corrugated sleeve 300. Each guide vane is arranged in an offset backflow pattern, forming an asymmetric flow channel between adjacent vanes. This Tesla valve structure allows the compressed gas to form a high-speed deflection flow field during unidirectional flow, effectively increasing the contact area between the gas and the inner wall of the corrugated sleeve 300, significantly improving heat exchange efficiency, and thus accelerating the removal of residual plasma gas heat from the inside of the cutting torch body 100.

[0040] In this embodiment, the corrugated sleeve 300 is preferably made of metal material, which has good thermal conductivity and mechanical strength. In addition to the inner flow channel 320, its inner wall is also provided with multiple annular protrusions to enhance the heat exchange efficiency during the gas turbulence process, thereby further improving the cooling performance.

[0041] The gas distribution ring 120 and the gas distribution ring 310 form a closed gas flow channel. Cooling gas is released sequentially from the compressed gas tank 200, enters the gas distribution ring 120 through the electromagnetic control valve 122, and is then transmitted to the gas distribution ring 310 through the inner flow channel 320 of the corrugated sleeve 300. Finally, it is ejected into the outer area of ​​the plasma nozzle through multiple micro-outlet holes of the gas distribution ring 310, forming a turbulent airflow.

[0042] Preferably, the compressed gas tank 200 can be either a carbon dioxide tank or a nitrogen tank, allowing selection of different cooling gases based on the actual usage scenario. The airbag frame 110 is equipped with a locking mechanism for limiting and securing the compressed gas tank 200. This locking mechanism is positioned opposite to the connecting seat 121, facilitating quick installation and replacement of the compressed gas tank 200 and improving the ease of use of the device.

[0043] In actual use, after the plasma cutting operation is completed, the control system controls the electromagnetic control valve 122 to open, so that the compressed gas is released into the gas distribution ring 120, and then introduced into the gas distribution ring 310 through the Tesla flow channel structure inside the corrugated sleeve 300. Then, the cooling gas is ejected at high speed through multiple micro gas outlets to interfere with and cool the residual flame of the plasma nozzle, quickly eliminate the residual heat field, and improve the safety of the equipment and the ability to operate continuously.

[0044] This invention achieves efficient cooling, turbulence extinguishing, precise gas flow field control, and rapid modular replacement through optimized structural design, making it suitable for the integration of cooling systems in various handheld or automated plasma cutting equipment.

[0045] Working principle and usage process of this utility model:

[0046] This invention is based on the principle of compressed gas injection for cooling and turbulence-induced arc extinguishing. By installing a corrugated sleeve 300 on the outside of the torch body 100 and introducing compressed carbon dioxide or nitrogen gas, it cools and turbulents the plasma flame channel, thereby accelerating plasma dissipation and eliminating residual heat flow from the torch. Its working process is as follows:

[0047] Gas supply: A compressed gas tank 200, such as CO2 or N2, is installed inside the airbag frame 110 and is connected to the device through the conical interface on the coupling seat 121.

[0048] Electrical control adjustment: The external circuit controls the opening or closing of the electromagnetic control valve 122 to release compressed gas as needed.

[0049] Gas flow guidance: The released compressed gas first enters the gas distribution ring 120, and then flows along multiple internal flow channels 320 inside the corrugated sleeve 300. The internal flow channels 320 adopt a Tesla valve structure, which enables the gas to form a high-speed unidirectional flow and enhances the heat exchange with the inner wall during deflection, thereby reducing the gas temperature in the ion flame flow channel inside the cutting torch body 100.

[0050] Nozzle interference: The gas is finally ejected through the micro-outlet holes in the gas distribution ring 310, surrounding the plasma nozzle to form a multi-angle disturbed airflow, physically disturbing the plasma flame and cooling its residual heat.

[0051] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A plasma torch extinguishing device, characterized in that, include: The cutting torch body (100), the compressed air tank (200), and the corrugated sleeve (300) integrated on the surface of the cutting torch body (100) are provided. The upper and lower ends of the corrugated sleeve (300) are respectively connected to the air distribution ring (120) and the air distribution ring (310). The surface of the air distribution ring (120) is fixedly connected to the connecting seat (121). The surface of the cutting torch body (100) is fixedly installed with the air bag frame (110) located on the top surface of the connecting seat (121). The connecting seat (121) and the air distribution ring (120) are provided with an electromagnetic control valve (122). The compressed air tank (200) is sleeved on the inside of the air bag frame (110). The surface of the connecting seat (121) is provided with a cone for communicating with the port of the compressed air tank (200). The inside of the corrugated sleeve (300) is provided with a number of internal flow channels (320) evenly distributed in the circumferential direction.

2. The plasma torch elimination device according to claim 1, characterized in that, The inner flow channel (320) is a Tesla valve flow channel structure, consisting of multiple bent guide vanes arranged sequentially along the axial direction. Each guide vane is arranged in an offset return flow pattern, and an asymmetric channel is formed between adjacent guide vanes. This is used to guide the formation of a high-speed flow field when the compressed gas flows in one direction, and to increase the contact area with the inner wall of the corrugated sleeve (300) during the multiple deflection of the gas, thereby improving the cooling efficiency of the corrugated sleeve (300).

3. The plasma torch elimination device according to claim 1, characterized in that, The corrugated sleeve (300) is a metal component, and its inner wall is provided with multiple annular protrusions to enhance the heat exchange efficiency with the gas in the ion flame channel.

4. The plasma torch elimination device according to claim 1, characterized in that, The gas distribution ring (120) and the gas distribution ring (310) form a connected gas channel, which is used to guide the airflow into the corrugated sleeve (300) and the cutting torch body (100), respectively.

5. The plasma torch elimination device according to claim 1, characterized in that, The coupling seat (121) is an integrally formed structure with a cone head on its surface for insertion into the bottom end of the compressed gas tank (200). The cone head is threaded for screwing into the end of the compressed gas tank (200) to ensure reliable transmission of high-pressure gas.

6. The plasma torch extinguishing device according to claim 1, characterized in that, The compressed air tank (200) is either a carbon dioxide tank or a nitrogen tank. The airbag frame (110) is provided with a snap-fit ​​mechanism for fastening the compressed air tank (200). The snap-fit ​​mechanism is arranged opposite to the coupling seat (121) to realize the snap-fit ​​positioning and quick assembly / disassembly of the compressed air tank (200).

7. The plasma torch extinguishing device according to claim 1, characterized in that, The two ends of the electromagnetic control valve (122) are connected to the cone head and the gas distribution ring (120) respectively, and are controlled to open or close by an external control circuit to release cooling gas as needed.

8. The plasma torch extinguishing device according to claim 1, characterized in that, The gas distribution ring (310) is provided with multiple radially arranged micro-outlet holes, which are used to uniformly introduce cooling gas into the periphery of the plasma nozzle channel, thereby realizing multi-angle interference jet flow to eliminate residual heat flow of the torch.

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