Gas path system and processing equipment

Abstract

The utility model discloses a gas path system and processing equipment, the gas path system is used for conveying first gas, second gas or third gas, the first gas and the second gas both comprise oxygen, and the oxygen contents of any two of the first gas, the second gas and the third gas are different. The gas path system comprises a gas outlet path, a first gas supply path, a second gas supply path, a third gas supply path and a mixing path. The first gas supply path is used for guiding first gas into the gas outlet path, and the first gas supply path can be connected or disconnected; the second gas supply path is used for guiding second gas into the gas outlet path, and the second gas supply path can be connected or disconnected; the third gas supply path is used for guiding third gas into the gas outlet path, and the third gas supply path can be connected or disconnected; the mixing path comprises a first branch, a second branch, a first flow regulating valve, a second flow regulating valve, a gas storage tank, a connecting path and an oxygen measuring instrument. The gas supply modes of the gas path system are richer.

Description

Technical Field

[0001] The present application relates to the technical field of laser cutting equipment, and in particular to a gas path system and processing equipment. Background Art

[0002] Laser cutting is widely used in various industries. Nitrogen is usually used for auxiliary cutting of stainless steel, and oxygen is used for auxiliary cutting of carbon steel. When nitrogen is used for auxiliary cutting, the cutting efficiency is high and the cutting section quality is good. However, when nitrogen is used as an auxiliary gas, a higher gas pressure needs to be set, resulting in a large nitrogen consumption and high cost. When oxygen is used for auxiliary cutting, the cutting section quality is good, but the cutting efficiency is low.

[0003] At present, high-pressure air is also gradually used for auxiliary cutting of thinner stainless steel and carbon steel. When using high-pressure air for auxiliary cutting, the cost of use is low and the cutting speed is fast. However, when high-pressure air is used for auxiliary cutting of thicker stainless steel, aluminum alloy or carbon steel, there will be more scraping residue on the back of the plate. After research, it was found that the main reason is the high oxygen content in the air (about 21%). If the oxygen content in the auxiliary gas can be reduced to below 10%, a higher quality cutting section can be obtained.

[0004] In the related art, although the gas circuit system can selectively supply oxygen, nitrogen or air, the supply mode is still not rich enough to meet the different needs of the processing process. Utility Model Content

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a gas circuit system with more abundant gas supply modes.

[0006] The present application also proposes a processing device having the above-mentioned gas circuit system.

[0007] According to the first aspect of the present application, the gas circuit system is used to transport a first gas, a second gas or a third gas, wherein the first gas and the second gas both include oxygen, and the oxygen content of any two of the first gas, the second gas and the third gas is different, and includes:

[0008] Exhaust path;

[0009] A first gas supply path, used to introduce a first gas into the gas outlet path, wherein the first gas supply path can be opened or disconnected;

[0010] A second gas supply path, used to introduce a second gas into the gas outlet path, wherein the second gas supply path can be opened or disconnected;

[0011] A third gas supply path, used to introduce a third gas into the gas outlet path, the third gas supply path can be opened or disconnected;

[0012] A mixing road comprises a first branch, a second branch, a first flow regulating valve, a second flow regulating valve, a gas tank, a connecting road and an oxygen meter, wherein the first branch is used to introduce the first gas into the gas tank, and the first flow regulating valve is used to adjust the flow of the first branch; the second branch is used to introduce the third gas into the gas tank, and the second flow regulating valve is used to adjust the flow of the second branch; the connecting road is used to introduce the gas in the gas tank into the gas outlet road, and the connecting road can be connected or disconnected; the oxygen meter is used to measure the oxygen content in the gas tank.

[0013] The gas circuit system according to the embodiment of the present application has at least the following beneficial effects: when the first gas supply circuit is connected alone, the gas circuit system can output the first gas; when the second gas supply circuit is connected alone, the gas circuit system can output the second gas; when the third gas supply circuit is connected alone, the gas circuit system can output the third gas; when only the first branch and the second branch are connected, a mixed gas of the first gas and the third gas can be stored in the gas storage tank, and the oxygen content in the gas storage tank is fed back through the oxygen measuring instrument, and the first flow regulating valve and the second flow regulating valve are adjusted, the gas circuit system can output a mixed gas with an oxygen concentration that meets the requirements; that is, the entire gas circuit system has four gas supply modes, and the gas supply modes are more abundant.

[0014] According to some embodiments of the present application, the first branch is used to introduce one of the first gas and the second gas into the gas storage tank.

[0015] According to some embodiments of the present application, the mixing path further includes a first three-way valve, and the first three-way valve is provided with:

[0016] a first inlet, connected to the first gas supply path;

[0017] a second inlet, connected to the second gas supply path;

[0018] a first outlet, connected to the first branch;

[0019] Wherein, the first inlet or the second inlet is connected to the first outlet.

[0020] According to some embodiments of the present application, the mixing path further includes:

[0021] a third branch, connected in parallel with the second branch, wherein the inner diameter of the third branch is greater than the inner diameter of the second branch;

[0022] The first pressure reducing valve is installed on the third branch.

[0023] According to some embodiments of the present application, a second three-way valve is further included, wherein the second three-way valve is provided with:

[0024] a third inlet, connected to the first gas supply path;

[0025] a fourth inlet, connected to the third gas supply path;

[0026] a second outlet, connected to the gas outlet path;

[0027] Wherein, the third inlet or the fourth inlet is connected to the second outlet.

[0028] According to some embodiments of the present application, it further includes:

[0029] a fourth branch, connected to the second outlet and the gas outlet;

[0030] The first on-off valve is installed on the fourth branch.

[0031] According to some embodiments of the present application, the mixing path further includes:

[0032] An exhaust branch, used for exhausting the gas in the gas storage tank;

[0033] A pressure relief valve is installed on the exhaust branch.

[0034] According to some embodiments of the present application, the first gas includes air, and the second gas includes oxygen; or, the first gas includes oxygen, and the second gas includes air.

[0035] According to some embodiments of the present application, the third gas includes nitrogen or argon.

[0036] The processing equipment according to the second embodiment of the present application includes:

[0037] The above-mentioned gas circuit system;

[0038] The cutting head is provided with an air jet channel, and the air jet channel is communicated with the air outlet path.

[0039] The processing equipment according to the embodiment of the present application has at least the following beneficial effects: by using the above-mentioned gas circuit system, the gas supply mode of the processing equipment is richer, the processing equipment can meet different processing requirements, and the processing range of the processing equipment is wider.

[0040] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present application is further described below with reference to the accompanying drawings and embodiments, wherein:

[0042] Figure 1A schematic diagram of a gas circuit system according to a first embodiment of the present application;

[0043] Figure 2 A schematic diagram of a gas circuit system according to a second embodiment of the present application;

[0044] Figure 3 A schematic diagram of a processing device according to an embodiment of the present application.

[0045] Reference numerals: first gas supply path 100, third pressure reducing valve 110;

[0046] A second air supply path 200, a second on-off valve 210, and a second pressure reducing valve 220;

[0047] A third gas supply line 300 and a fourth pressure reducing valve 310;

[0048] Mixing path 400, first branch 410, first flow regulating valve 411, fifth pressure reducing valve 412, second branch 420, second flow regulating valve 421, gas storage tank 430, exhaust branch 431, pressure relief valve 432, oxygen measuring instrument 440, connecting path 450, third on-off valve 451, third branch 460, first pressure reducing valve 461, first three-way valve 470, first inlet 471, second inlet 472, first outlet 473, control unit 480;

[0049] A second three-way valve 500, a third inlet 510, a fourth inlet 520, and a second outlet 530;

[0050] The fourth branch 600 and the first on-off valve 610;

[0051] Gas outlet 700, high pressure proportional valve 710;

[0052] Cutting head 800 , air jet channel 710 . DETAILED DESCRIPTION

[0053] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0054] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0055] In the description of this application, "several" means one or more than one, "more" means two or more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0056] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0057] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0058] Reference Figure 1 According to the gas path system of the first aspect embodiment of the present application, it is used to transport a first gas, a second gas or a third gas, the first gas and the second gas both include oxygen, and the oxygen content of any two of the first gas, the second gas and the third gas is different, and includes a first gas supply path 100, a second gas supply path 200, a third gas supply path 300, a mixing path 400 and a gas outlet path 700. The first gas supply path 100 is used to introduce the first gas into the gas outlet path 700, and the first gas supply path 100 can be turned on or off. The second gas supply path 200 is used to introduce the second gas into the gas outlet path 700, and the second gas supply path 200 can be turned on or off. The third gas supply path 300 is used to introduce the third gas into the gas outlet path 700, and the third gas supply path 300 can be turned on or off.

[0059] The mixing path 400 includes a first branch 410, a second branch 420, a first flow regulating valve 411, a second flow regulating valve 421, a gas tank 430, a connecting path 450 and an oxygen meter 440. The first branch 410 is used to introduce the first gas into the gas tank 430, and the first flow regulating valve 411 is used to adjust the flow of the first branch 410. The second branch 420 is used to introduce the third gas into the gas tank 430, and the second flow regulating valve 421 is used to adjust the flow of the second branch 420. The connecting path 450 is used to introduce the gas in the gas tank 430 into the gas outlet path 700, and the connecting path 450 can be turned on or off. The oxygen meter 440 is used to measure the oxygen content in the gas tank 430.

[0060] The gas circuit system according to the embodiment of the present application has at least the following beneficial effects: when the first gas supply circuit 100 is connected alone, the gas circuit system can output the first gas; when the second gas supply circuit 200 is connected alone, the gas circuit system can output the second gas; when the third gas supply circuit 300 is connected alone, the gas circuit system can output the third gas; when only the first branch 410 and the second branch 420 are connected, a mixed gas of the first gas and the third gas can be stored in the gas tank 430, and the oxygen content in the gas tank 430 is fed back through the oxygen meter 440, and the first flow regulating valve 411 and the second flow regulating valve 421 are adjusted, the gas circuit system can output a mixed gas with an oxygen concentration that meets the requirements; that is, the entire gas circuit system has four gas supply modes, and the gas supply modes are more abundant.

[0061] Specifically, the gas circuit system further includes a second on-off valve 210, which is installed on the second gas supply circuit 200, so that the second gas supply circuit 200 can be opened or closed. The second on-off valve 210 can be a gate valve, a stop valve, a ball valve or a butterfly valve.

[0062] Specifically, the gas circuit system further includes a third on-off valve 451, which is installed on the connection path 450, so that the connection path 450 can be opened or closed. The third on-off valve 451 can be a gate valve, a stop valve, a ball valve or a butterfly valve.

[0063] Specifically, the gas circuit system further includes a second pressure reducing valve 220, which is installed on the second gas supply circuit 200 and is arranged in sequence with the second on-off valve 210 along the flow direction of the second gas. The second pressure reducing valve 220 can adjust the gas pressure of the second gas supply circuit 200.

[0064] Specifically, the gas circuit system further includes a third pressure reducing valve 110, which is installed on the first gas supply circuit 100 and can adjust the gas pressure of the first gas supply circuit 100. The gas circuit system further includes a fourth pressure reducing valve 310, which is installed on the third gas supply circuit 300 and can adjust the gas pressure of the third gas supply circuit 300.

[0065] Specifically, the gas circuit system further includes a fifth pressure reducing valve 412, which is installed on the first branch 410 and is arranged in sequence with the first flow regulating valve 411 along the flow direction of the first gas. The fifth pressure reducing valve 412 can adjust the gas pressure of the first branch 410.

[0066] Specifically, the mixing path 400 further includes a control unit 480 , which receives an oxygen content signal fed back by the oxygen meter 440 , thereby controlling the opening of the first flow regulating valve 411 and the second flow regulating valve 421 , thereby achieving oxygen concentration regulation in the gas storage tank 430 .

[0067] Specifically, the gas circuit system further includes a high-pressure proportional valve 710 , which is installed on the gas outlet circuit 700 . The high-pressure proportional valve 710 can control the flow rate and gas pressure of the gas outlet circuit 700 .

[0068] Reference Figure 2 In some embodiments of the present application, the first branch 410 is used to introduce one of the first gas and the second gas into the gas storage tank 430.

[0069] After the first branch 410 selectively introduces the first gas or the second gas, the gas storage tank 430 can store a mixture of the first gas and the third gas, or a mixture of the second gas and the third gas. The entire gas circuit system has five gas supply modes, and the gas supply modes are more abundant.

[0070] Reference Figure 2 In the improved scheme of the above embodiment, the mixing path 400 further includes a first three-way valve 470, and the first three-way valve 470 is provided with a first inlet 471, a second inlet 472 and a first outlet 473. The first inlet 471 is communicated with the first gas supply path 100. The second inlet 472 is communicated with the second gas supply path 200. The first outlet 473 is communicated with the first branch 410. Among them, the first inlet 471 or the second inlet 472 is communicated with the first outlet 473.

[0071] By providing the first three-way valve 470 , the switching selection between the first gas and the second gas can be realized with a simple structure, thereby facilitating the reduction of the production cost of the gas circuit system.

[0072] Reference Figure 2In some embodiments of the present application, the mixing path 400 further includes a third branch 460 and a first pressure reducing valve 461 . The third branch 460 is connected in parallel with the second branch 420 . The inner diameter of the third branch 460 is greater than the inner diameter of the second branch 420 . The first pressure reducing valve 461 is installed on the third branch 460 .

[0073] When the oxygen concentration required by the mixed gas in the gas tank 430 is low, a large amount of the third gas needs to be introduced first, and when the oxygen concentration is adjusted in a small range, a small amount of the third gas needs to be introduced. After the third branch 460 is connected in parallel with the second branch 420, the third branch 460 can also play a role in introducing the first gas into the gas tank 430. The inner diameter of the third branch 460 is larger than the inner diameter of the second branch 420, and the increase in the inner diameter is conducive to increasing the flow rate. When the flow rate of the first gas is the same, the flow rate of the third branch 460 will be greater than the flow rate of the second branch 420.

[0074] Thus, when a large amount of the third gas needs to be introduced, the flow rate of the second flow regulating valve 421 can be reduced, and the setting value of the first pressure reducing valve 461 can be increased, so that the third gas can be quickly introduced into the gas storage tank 430 through the third branch 460. When the concentration of oxygen needs to be adjusted in a small range, the flow rate of the second flow regulating valve 421 can be adjusted, and the setting value of the first pressure reducing valve 461 can be reduced, so as to accurately adjust the concentration of oxygen in the gas storage tank 430. That is, the introduction of the third gas into the mixing path 400 will be more flexible and efficient.

[0075] Reference Figure 2 In some embodiments of the present application, the gas circuit system further includes a second three-way valve 500, and the second three-way valve 500 is provided with a third inlet 510, a fourth inlet 520, and a second outlet 530. The third inlet 510 is communicated with the first gas supply path 100. The fourth inlet 520 is communicated with the third gas supply path 300. The second outlet 530 is communicated with the gas outlet path 700. Among them, the third inlet 510 or the fourth inlet 520 is communicated with the second outlet 530.

[0076] By providing the second three-way valve 500 , the first gas supply path 100 and the third gas supply path 300 can share a section of pipeline, which is beneficial to reducing the production cost of the gas path system.

[0077] Reference Figure 2 In some embodiments of the present application, the gas circuit system further includes a fourth branch 600 and a first on-off valve 610 , and the fourth branch 600 is connected to the second outlet 530 and the gas outlet 700 . The first on-off valve 610 is installed on the fourth branch 600 .

[0078] The first gas supply line 100 and the third gas supply line 300 share a fourth branch 600, and the first on-off valve 610 is installed behind the fourth branch 600. The first on-off valve 610 can also serve as a switch to connect or disconnect the first gas supply line 100 and the third gas supply line 300, and the structure of the gas line system is simpler.

[0079] Reference Figure 2 In some embodiments of the present application, the mixing path 400 further includes an exhaust branch 431 and a pressure relief valve 432. The exhaust branch 431 is used to discharge the gas in the gas storage tank 430. The pressure relief valve 432 is installed on the exhaust branch 431.

[0080] By providing the pressure relief valve 432, the gas pressure of the gas tank 430 can be kept within the safe pressure range, and the safety performance of the gas circuit system is higher. In addition, the exhaust branch 431 can also be used to discharge excess gas. For example, when it is necessary to reduce the oxygen content in the gas tank 430, a part of the gas in the gas tank 430 can be discharged first, and then the third gas can be introduced into the gas tank 430.

[0081] Reference Figure 2 In some embodiments of the present application, the first gas includes air and the second gas includes oxygen; or, the first gas includes oxygen and the second gas includes air.

[0082] Oxygen is used for auxiliary cutting of carbon steel, and air is used for auxiliary cutting of thinner stainless steel and carbon steel. Oxygen and air are frequently used gases. The selection of oxygen and air is helpful to expand the scope of application of the gas system.

[0083] Reference Figure 2 In some embodiments of the present application, the third gas includes nitrogen or argon.

[0084] Among the third gases, the use cost of nitrogen and argon is relatively low, which is beneficial to reducing the use cost of the gas circuit system.

[0085] Reference Figure 3 According to the second aspect of the present application, the processing equipment includes an air path system and a cutting head 800 . The cutting head 800 is provided with an injection channel 810 , and the injection channel 810 is connected to the air outlet path 700 .

[0086] The processing equipment according to the embodiment of the present application has at least the following beneficial effects: by using the above-mentioned gas circuit system, the gas supply mode of the processing equipment is richer, the processing equipment can meet different processing requirements, and the processing range of the processing equipment is wider.

[0087] Specifically, the processing equipment may be laser cutting equipment, plasma cutting equipment, flame cutting equipment or the like.

[0088] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A gas circuit system for conveying a first gas, a second gas or a third gas, wherein the first gas and the second gas both contain oxygen, and the oxygen content of any two of the first gas, the second gas and the third gas is different, characterized in that: include: Exhaust path; A first gas supply path, used to introduce a first gas into the gas outlet path, wherein the first gas supply path can be opened or disconnected; A second gas supply path, used to introduce a second gas into the gas outlet path, wherein the second gas supply path can be opened or disconnected; A third gas supply path, used to introduce a third gas into the gas outlet path, the third gas supply path can be opened or disconnected; A mixing path, comprising a first branch, a second branch, a first flow regulating valve, a second flow regulating valve, a gas storage tank, a connecting path and an oxygen measuring instrument, wherein the first branch is used to introduce the first gas into the gas storage tank, and the first flow regulating valve is used to regulate the flow of the first branch; The second branch is used to introduce the third gas into the gas storage tank, and the second flow regulating valve is used to adjust the flow of the second branch; The connecting path is used to introduce the gas in the gas storage tank into the gas outlet path, and the connecting path can be connected or disconnected; the oxygen measuring instrument is used to measure the oxygen content in the gas storage tank.

2. The gas circuit system according to claim 1, characterized in that: The first branch is used to introduce one of the first gas and the second gas into the gas storage tank.

3. The gas circuit system according to claim 2, characterized in that: The mixing path further comprises a first three-way valve, wherein the first three-way valve is provided with: a first inlet, connected to the first gas supply path; a second inlet, connected to the second gas supply path; a first outlet, connected to the first branch; Wherein, the first inlet or the second inlet is connected to the first outlet.

4. The gas circuit system according to any one of claims 1 to 3, characterized in that: The mixing path also includes: a third branch, connected in parallel with the second branch, wherein the inner diameter of the third branch is greater than the inner diameter of the second branch; The first pressure reducing valve is installed on the third branch.

5. The gas circuit system according to any one of claims 1 to 3, characterized in that: It also includes a second three-way valve, wherein the second three-way valve is provided with: a third inlet, connected to the first gas supply path; a fourth inlet, connected to the third gas supply path; a second outlet, connected to the gas outlet path; Wherein, the third inlet or the fourth inlet is connected to the second outlet.

6. The gas circuit system according to claim 5, characterized in that: Also includes: a fourth branch, connected to the second outlet and the gas outlet; The first on-off valve is installed on the fourth branch.

7. The gas circuit system according to any one of claims 1 to 3, characterized in that: The mixing path also includes: An exhaust branch, used for exhausting the gas in the gas storage tank; A pressure relief valve is installed on the exhaust branch.

8. The gas circuit system according to any one of claims 1 to 3, characterized in that: The first gas includes air, and the second gas includes oxygen; or the first gas includes oxygen, and the second gas includes air.

9. The gas circuit system according to claim 1, characterized in that: The third gas includes nitrogen or argon.

10. Processing equipment, characterized in that, include: The gas circuit system according to any one of claims 1 to 9; The cutting head is provided with an air jet channel, and the air jet channel is communicated with the air outlet path.

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