Plasma generation system

Abstract

The present disclosure relates to a plasma generating system, comprising an arc drawing system, the arc drawing system comprising a gas storage tank (4), an air pressure control component and an arc drawing machine connected via a carrier air delivery path (3), the carrier air delivery path (3) being connected between an air outlet of the gas storage tank (4) and an air inlet of the arc drawing machine so as to deliver the carrier air in the gas storage tank (4) to the arc drawing machine, the air pressure control component comprising a plurality of control components, the plurality of control components being arranged on the carrier air delivery path (3) for multi-stage adjustment of the carrier air pressure in the carrier air delivery path (3). The plasma system carrier air pressure control component can solve the problem of unstable plasma carrier air pressure.

Description

Technical Field

[0001] The present disclosure relates to the field of boiler combustion systems, and in particular, to a plasma generating system. Background Art

[0002] The plasma generation system plays an important role in the start and stop of the boiler and the stable combustion of the boiler at low load. The stability of plasma combustion plays a vital role in the safe operation of the boiler. During the startup of the boiler, stable plasma operation can make the coal powder burn fully, effectively prevent the secondary combustion of the tail flue of the boiler, and effectively solve the occurrence of furnace explosion accidents due to incomplete combustion during the startup of the boiler.

[0003] In the current equipment, there is a situation where the carrier wind pressure is unstable. The unstable carrier wind pressure causes frequent arc breaking of plasma, and the frequent arc breaking causes unstable plasma combustion, so that the coal powder cannot be fully burned, posing a safety hazard. Summary of the invention

[0004] The purpose of the present disclosure is to provide a plasma generating system which can solve the problem of unstable wind pressure of plasma carriers.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a plasma generating system, including an arc drawing system, wherein the arc drawing system includes a gas storage tank, an air pressure control component and an arc drawing machine connected through a carrier air delivery path, the carrier air delivery path is connected between the air outlet of the gas storage tank and the air inlet of the arc drawing machine to deliver the carrier air in the gas storage tank to the arc drawing machine, and the air pressure control component includes a plurality of control components, and the plurality of control components are arranged on the carrier air delivery path for multi-stage adjustment of the carrier air pressure in the carrier air delivery path.

[0006] Optionally, the arc drawing system includes a first-level arc drawing system and a second-level arc drawing system connected in parallel, the first-level arc drawing system includes a first wind pressure control component and a first arc drawing machine, the second-level arc drawing system includes a second wind pressure control component and a second arc drawing machine, the carrier air conveying path includes a conveying main path, a first conveying branch path and a second conveying branch path, the inlet of the conveying main path is connected to the gas storage tank, the inlets of the first conveying branch path and the second conveying branch path are respectively connected to the outlet of the conveying main path, the outlet of the first conveying branch path is connected to the first arc drawing machine, and the outlet of the second conveying branch path is connected to the second arc drawing machine, the first wind pressure control component includes a plurality of first control components, and the plurality of first control components are arranged on the first conveying branch path, the second wind pressure control component includes a plurality of second control components, and the second control components are arranged on the second conveying branch path.

[0007] Optionally, there are two first arc-drawing machines, the first conveying branch includes two first branches connected in parallel, the two first branches are respectively connected to the two first arc-drawing machines, and the first air pressure control components are constructed in two groups, and the two groups of the first air pressure control components are respectively located on the two first branches.

[0008] Optionally, the first arc drawing machine structure has two first access ports, two first branches are connected to two first branch roads in parallel, the two first branch roads are respectively connected to the two first access ports, and the first branch and the two first branch roads are respectively arranged with the first control components.

[0009] Optionally, the first control element located on the first branch is used to adjust the carrier wind pressure in the first branch to 0.2-0.3 MPa, and the two first control elements located on the two first branch roads are respectively used to adjust the carrier wind pressure in the first branch to 0.05-0.1 KPa.

[0010] Optionally, the second arc drawing machines are structured with two, the second conveying branch includes two second branches connected in parallel, the two second branches are respectively connected to the two second arc drawing machines, and the second air pressure control components are structured with two groups, and the two groups of second air pressure control components are respectively located on the two second branches.

[0011] Optionally, the second arc drawing machine structure has a second access port, two second branches are respectively connected to the second access ports of two second arc drawing machines, and two second control components are arranged on the second branch.

[0012] Optionally, one of the two second control elements located upstream is used to adjust the carrier wind pressure in the second branch to 0.2-0.3 MPa, and one of the two second control elements located downstream is used to adjust the carrier wind pressure in the second branch to 0.05-0.1 KPa.

[0013] Optionally, the plasma generating system further includes a cooling system, the cooling system including an air cooler and a cooling pipeline connected to the air cooler, the cooling pipeline including a cooling main circuit and a first cooling branch and a second cooling branch connected to the cooling main circuit, the cooling outlet of the first cooling branch and the cooling outlet of the second cooling branch are respectively connected to the first cooling port of the first arc drawing machine and the second cooling port of the second arc drawing machine.

[0014] Optionally, the cooling pipeline further includes a third cooling branch and a fourth cooling branch, the third cooling branch connects the cooling main path with the first conveying branch, and the fourth cooling branch connects the cooling main path with the second conveying branch.

[0015] Optionally, the control element is configured as a needle valve.

[0016] Through the above technical solution, when the plasma generating device is used, the compressed air in the gas tank is used as the carrier wind and is delivered to the inlet of the arc drawing machine through the carrier wind delivery path. The arc drawing machine generates an arc, and the carrier wind is ionized into high-temperature air plasma through the arc. During the carrier wind delivery process, the carrier wind passes through the wind pressure control component to adjust its carrier wind pressure. During the carrier wind pressure adjustment process, multiple control components adjust the carrier wind pressure step by step to the required carrier wind pressure. The step-by-step adjustment of multiple control components reduces the adjustment amplitude each time, reduces the change value of each adjustment, avoids excessive adjustment at a single time, and facilitates maintaining the stability of the carrier wind pressure during the adjustment process.

[0017] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0019] Figure 1 The present invention provides a schematic structural diagram of a plasma generating system.

[0020] Description of Reference Numerals

[0021] 1. First-stage arc-drawing system; 101. First wind pressure control component; 102. First arc-drawing machine; 2. Second-stage arc-drawing system; 201. Second wind pressure control component; 202. Second arc-drawing machine; 3. Carrier air conveying path; 301. Conveying main path; 302. First conveying branch; 303. Second conveying branch; 4. Gas storage tank; 5. First access port; 6. First branch road; 7. Second access port; 8. Air cooler; 9. Cooling main path; 10. First cooling branch; 11. Second cooling branch; 12. Third cooling branch; 13. Fourth cooling branch. DETAILED DESCRIPTION

[0022] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0023] In the present disclosure, unless otherwise stated, directional words such as "upper and lower" generally refer to the "upper and lower" in the direction of gravity when the corresponding component is in use, and "inside and outside" refer to the "inside and outside" relative to the contour of the corresponding component itself. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be construed as limitations on the present disclosure.

[0024] In order to achieve the above-mentioned purpose, the present disclosure provides a plasma generating system, including an arc drawing system, the arc drawing system including a gas storage tank 4, a wind pressure control component and an arc drawing machine connected through a carrier wind conveying path 3, the carrier wind conveying path 3 is connected between the gas outlet of the gas storage tank 4 and the gas inlet of the arc drawing machine to convey the carrier wind in the gas storage tank 4 to the arc drawing machine, and the wind pressure control component includes a plurality of control components, and the plurality of control components are arranged on the carrier wind conveying path 3 for multi-stage adjustment of the carrier wind pressure in the carrier wind conveying path 3.

[0025] Through the above technical solution, when the plasma generating device is used, the compressed air in the gas tank 4 is sent to the inlet of the arc drawing machine through the carrier air conveying path 3 as the carrier air, and the arc drawing machine generates an arc, and the carrier air is ionized into high-temperature air plasma through the arc. During the carrier air conveying process, the carrier air pressure is adjusted by the air pressure control component. During the carrier air pressure adjustment process, multiple control components adjust the carrier air pressure step by step to the required carrier air pressure. The step-by-step adjustment of multiple control components reduces the adjustment amplitude each time, reduces the change value of each adjustment, avoids a single large adjustment, and facilitates maintaining the stability of the carrier air pressure during the adjustment process.

[0026] As an optional embodiment, the arc drawing system may include a first-level arc drawing system 1 and a second-level arc drawing system 2 connected in parallel, the first-level arc drawing system 1 includes a first wind pressure control component 101 and a first arc drawing machine 102, the second-level arc drawing system 2 includes a second wind pressure control component 201 and a second arc drawing machine 202, the carrier air conveying path 3 includes a conveying main path 301, a first conveying branch 302 and a second conveying branch 303, the inlet of the conveying main path 301 is connected to the gas tank 4, the inlets of the first conveying branch 302 and the second conveying branch 303 are respectively connected to the outlet of the conveying main path 301, the outlet of the first conveying branch 302 is connected to the first arc drawing machine 102, and the outlet of the second conveying branch 303 is connected to the second arc drawing machine 202, the first wind pressure control component 101 includes a plurality of first control components, and the plurality of first control components are arranged on the first conveying branch 302, the second wind pressure control component 201 includes a plurality of second control components, and the plurality of second control components are arranged on the second conveying branch 303. The carrier wind comes out of the gas storage tank 4, passes through the main conveying path 301, and then enters the first conveying branch 302 and the second conveying branch 303 respectively. The carrier wind of the first conveying branch 302 enters the first arc drawing machine 102 after being adjusted step by step by the first wind pressure control component 101. The first arc drawing machine 102 generates arc ionization, and the carrier wind adjusted by the first wind pressure control component 101 becomes high-temperature air plasma. The carrier wind of the second conveying branch 303 enters the second arc drawing machine 202 after being adjusted step by step by the second wind pressure control component 201. The second arc drawing machine 202 generates arc ionization, and the carrier wind adjusted by the second wind pressure control component 201 becomes high-temperature air plasma. The plasma generated by the first arc drawing machine 102 and the second arc drawing machine 202 is superimposed to meet the load required for ignition, thereby completing the ignition work. The first conveying branch 302 and the second conveying branch 303 are respectively provided with a first control component and a second control component, which are convenient for adjusting a smaller amount of carrier wind on each branch, thereby improving the adjustment effect and facilitating the carrier wind to stably enter the arc drawing machine at a preset carrier wind pressure.

[0027] As an optional embodiment, there are two first arc drawing machines 102, the first conveying branch 302 includes two first branches connected in parallel, the two first branches are respectively connected to the two first arc drawing machines 102, and the first wind pressure control components 101 are constructed with two groups, and the two groups of first wind pressure control components 101 are respectively located on the two first branches. After the carrier wind is output from the first conveying branch 302, it is divided into two parts, and the two parts enter the two first branches respectively, and are adjusted step by step by the first wind pressure control components 101 on the two first branches respectively. The carrier wind adjusted step by step enters the two first arc drawing machines 102 through the first branch. Two first arc drawing machines 102 are set in the first-stage arc drawing system 1, and the high-temperature air plasma generated by the two first arc drawing machines 102 can be superimposed to meet the load required by the first-stage arc drawing system 1, reducing the possibility of difficulty in stably adjusting the carrier wind pressure and difficulty in completely ionizing the carrier wind due to excessive carrier wind volume in setting a single first arc drawing machine 102.

[0028] As an optional embodiment, the first arc drawing machine 102 is constructed with two first access ports 5, and the two first branches are connected to two first branch roads 6 in parallel, and the two first branch roads 6 are respectively connected to the two first access ports 5, and the first branch road and the two first branch roads 6 are respectively arranged with first control components. The first arc drawing machine 102 requires a large amount of carrier wind for ionization, and the carrier wind is input into the first arc drawing machine 102 through the two first access ports 5, and each is provided with an independent first control component, so as to facilitate adjusting a small amount of carrier wind to the required pressure during the conveying process, and reduce the situation where the carrier wind pressure is unstable during the adjustment process of the large flow of carrier wind.

[0029] As an optional implementation, the first control component located on the first branch is used to adjust the carrier wind pressure in the first branch to 0.2-0.3MPa, and the two first control components located on the two first branch roads are used to adjust the carrier wind pressure in the first branch to 0.05-0.1KPa respectively. The carrier wind pressure in the first branch is adjusted to 0.2-0.3MPa by the first control component and then enters the two first branch roads 6 respectively. The first control components on the first branch roads 6 adjust the carrier wind pressure to 0.05-0.1KPa and then send it to the two entrances of the first arc drawing machine 102 respectively. The two first branch roads 6 are respectively provided with first control components to reduce the influence on the carrier wind pressure when the carrier wind is divided into two parts and enters the two first branch roads 6 respectively after adjusting the carrier wind pressure, so as to facilitate the adjustment of the carrier wind pressure to the required pressure value.

[0030] As an optional embodiment, the second arc drawing machine 202 is constructed with two, the second conveying branch 303 includes two second branches connected in parallel, the two second branches are respectively connected to the two second arc drawing machines 202, and the second wind pressure control components 201 are constructed with two groups, and the two groups of second wind pressure control components 201 are respectively located on the two second branches. After the carrier wind enters the second conveying branch 303, it enters the two second branches respectively, and enters the two second arc drawing machines 202 respectively after being adjusted step by step by the two groups of second wind pressure control components 201. The high-temperature air plasma generated by the two second arc drawing machines 202 is superimposed on each other to reach the load required by the second-stage arc drawing system 2. Two groups of second wind pressure control components 201 are respectively arranged on the second branch to reduce the possibility of affecting the carrier wind pressure after entering the second branch respectively after adjustment, so as to facilitate accurate and stable control of the carrier wind pressure.

[0031] As an optional embodiment, the second arc drawing machine 202 is configured with a second access port 7, the two second branches are respectively connected to the second access ports 7 of the two second arc drawing machines 202, and two second control members are arranged on the second branches. The regulated carrier wind is sent into the second access port 7, so that the second arc drawing machine 202 ionizes the carrier wind into high-temperature air plasma.

[0032] As an optional implementation, one of the two second control members located upstream is used to adjust the carrier wind pressure in the second branch to 0.2-0.3MPa, and one of the two second control members located downstream is used to adjust the carrier wind pressure in the second branch to 0.05-0.1KPa. Through two-stage step-by-step adjustment, the change amount of a single adjustment is reduced, avoiding the situation where the carrier wind pressure is unstable due to excessive changes in the carrier wind pressure in a short period of time.

[0033] As an optional embodiment, the plasma generating system further includes a cooling system, the cooling system includes a cooling fan 8 and a cooling pipeline connected to the cooling fan 8, the cooling pipeline includes a cooling main path 9 and a first cooling branch 10 and a second cooling branch 11 connected to the cooling main path 9, the cooling outlet of the first cooling branch 10 and the cooling outlet of the second cooling branch 11 are respectively connected to the first cooling port of the first arc drawing machine 102 and the second cooling port of the second arc drawing machine 202. The cooling fan 8 sends cold air into the cooling main path 9, and after being transported by the cooling main path 9, the cold air is transported to the cooling branch, and the cold air transported through the cooling branch enters the first arc drawing machine 102 through the first cooling port, and enters the second arc drawing machine 202 through the second cooling port, thereby cooling the temperature of the first arc drawing machine 102 and the second arc drawing machine 202, reducing the influence of the arc drawing machine on the carrier wind temperature, and reducing the possibility that the temperature affects the carrier wind density and thus changes the carrier wind pressure. In this embodiment, two cooling air machines 8 may be provided, wherein one cooling air machine 8 is used as a common cooling air machine 8 and the other cooling air machine 8 is used as a standby cooling air machine 8. In some other embodiments, only one cooling air machine 8 is provided.

[0034] As an optional embodiment, the cooling pipeline further includes a third cooling branch 12 and a fourth cooling branch 13, wherein the third cooling branch 12 connects the cooling main path 9 with the first conveying branch 302, and the fourth cooling branch 13 connects the cooling main path 9 with the second conveying branch 303. The cold air passing through the cooling main path 9 enters the third cooling branch 12 and the fourth cooling branch 13, thereby cooling the pressure-regulated carrier air, and reducing the possibility of changing the carrier air pressure due to changes in the density of the carrier air caused by temperature changes when approaching the arc drawing machine.

[0035] As an optional implementation, the control element is constructed as a needle valve. The needle valve is easy to control accurately during adjustment, which facilitates adjusting the valve to the required opening and reduces the impact of repeated changes in the valve opening on the carrier air pressure during the adjustment process.

[0036] When the plasma generating system is used, the compressed air in the gas tank 4 is transported to the first-stage arc drawing system 1 and the second-stage arc drawing system 2 respectively through the carrier air conveying path 3. The carrier air entering the first-stage arc drawing system 1 is adjusted in two stages by the first air pressure control component 101, and is respectively sent to the two first access ports 5 of the two first arc drawing machines 102. The arc of the first arc drawing machine 102 is ionized into high-temperature plasma, which is superimposed with the high-temperature plasma ionized by the two second arc drawing machines 202 of the second-stage arc drawing device, thereby reaching the ignition load and completing the generation of plasma. At the same time, a cooling system is provided for cooling the carrier air and the arc drawing device through a cold air fan 8 to reduce the possibility of changes in carrier air density caused by temperature changes and thus changes in carrier air pressure. During the plasma generation process, the adjustment method is multi-stage adjustment to reduce the change value of each plasma adjustment and reduce the possibility of unstable carrier air pressure due to excessive changes.

[0037] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0039] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A plasma generating system, characterized in that: The invention comprises an arc drawing system, wherein the arc drawing system comprises a gas storage tank (4), an air pressure control component and an arc drawing machine which are connected via a carrier air delivery path (3); the carrier air delivery path (3) is connected between the air outlet of the gas storage tank (4) and the air inlet of the arc drawing machine so as to deliver the carrier air in the gas storage tank (4) to the arc drawing machine; the air pressure control component comprises a plurality of control components, and the plurality of control components are arranged on the carrier air delivery path (3) and are used for adjusting the carrier air pressure in the carrier air delivery path (3) in multiple stages. The arc drawing system comprises a first-stage arc drawing system (1) and a second-stage arc drawing system (2) connected in parallel, the first-stage arc drawing system (1) comprising a first air pressure control component (101) and a first arc drawing machine (102), the second-stage arc drawing system (2) comprising a second air pressure control component (201) and a second arc drawing machine (202), The carrier air conveying path (3) comprises a conveying main path (301), a first conveying branch path (302) and a second conveying branch path (303); the inlet of the conveying main path (301) is connected to the gas storage tank (4); the inlets of the first conveying branch path (302) and the second conveying branch path (303) are respectively connected to the outlet of the conveying main path (301); the outlet of the first conveying branch path (302) is connected to the first arc drawing machine (102); the outlet of the second conveying branch path (303) is connected to the second arc drawing machine (202); the first air pressure control component (101) comprises a plurality of first control components, and the plurality of first control components are arranged on the first conveying branch path (302); the second air pressure control component (201) comprises a plurality of second control components, and the second control components are arranged on the second conveying branch path (303); The first arc drawing machines (102) are structured with two, the first conveying branch (302) comprises two first branches connected in parallel, the two first branches are respectively connected to the two first arc drawing machines (102), the first air pressure control components (101) are structured with two groups, the two groups of the first air pressure control components (101) are respectively located on the two first branches, The first arc drawing machine (102) is constructed with two first access ports (5), the two first branches are connected to two first branch roads (6) connected in parallel, the two first branch roads (6) are connected to the two first access ports (5) respectively, and the first branch road and the two first branch roads (6) are respectively provided with the first control components.

2. The plasma generating system according to claim 1, characterized in that: The first control element located on the first branch is used to adjust the carrier wind pressure in the first branch to 0.2-0.3 MPa, and the two first control elements located on the two first branch roads (6) are used to adjust the carrier wind pressure in the first branch roads (6) to 0.05-0.1 KPa respectively.

3. The plasma generating system according to claim 1, characterized in that: The second arc drawing machines (202) are constructed with two, the second conveying branch (303) includes two second branches connected in parallel, the two second branches are respectively connected to the two second arc drawing machines (202), and the second air pressure control components (201) are constructed with two groups, and the two groups of the second air pressure control components (201) are respectively located on the two second branches.

4. The plasma generating system according to claim 3, characterized in that: The second arc drawing machine (202) is constructed with a second access port (7), and two second branches are respectively connected to the second access ports (7) of the two second arc drawing machines (202), and two second control components are arranged on the second branch.

5. The plasma generating system according to claim 4, characterized in that: One of the two second control elements located upstream is used to adjust the carrier wind pressure in the second branch to 0.2~0.3MPa, and one of the two second control elements located downstream is used to adjust the carrier wind pressure in the second branch to 0.05~0.1KPa.

6. The plasma generating system according to claim 1, characterized in that: The plasma generating system further comprises a cooling system, the cooling system comprising an air cooler (8) and a cooling pipeline connected to the air cooler (8), the cooling pipeline comprising a cooling main circuit (9) and a first cooling branch circuit (10) and a second cooling branch circuit (11) connected to the cooling main circuit (9), the cooling outlet of the first cooling branch circuit (10) and the cooling outlet of the second cooling branch circuit (11) being connected to a first cooling outlet of the first arc drawing machine (102) and a second cooling outlet of the second arc drawing machine (202), respectively.

7. The plasma generating system according to claim 6, characterized in that: The cooling pipeline further comprises a third cooling branch (12) and a fourth cooling branch (13), wherein the third cooling branch (12) connects the cooling main path (9) with the first conveying branch (302), and the fourth cooling branch (13) connects the cooling main path (9) with the second conveying branch (303).

8. The plasma generating system according to claim 1, characterized in that: The control element is configured as a needle valve.

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