Electric arc reinforcing device and plasma ignition gun using same

Abstract

The utility model discloses an electric arc strengthening device and a plasma burning torch using the same, and belongs to the technical field of petrochemical engineering ignition equipment, the electric arc strengthening device comprises a device body, the device body is of a cylindrical or semi-cylindrical structure, a plurality of ventilation holes are formed in the device body, one end of the device body is connected with an electric arc torch nozzle, and the other end of the device body is connected with a power supply. The electric arc strengthening device is additionally arranged on a traditional plasma ignition gun, electric arcs can be obviously increased, the design of an existing ignition device is not changed, the strong ignition effect can be truly achieved, meanwhile, the plasma ignition gun with the electric arc strengthening device is ingenious and simple in structure, high in severe environment resistance such as wind resistance and rain resistance, and capable of being used for ignition of the plasma ignition gun. The ignition success rate is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of petrochemical ignition equipment, and in particular relates to an arc strengthening device and a plasma ignition gun using the device. Background Art

[0002] During petrochemical exploration and development or gathering and collection, ignition equipment is needed to ignite and burn the combustible or toxic gases emitted by the gas spray to eliminate their hazards. One of the key components commonly used is the arc ignition gun, such as the patent application with application number "202022546965.4" and titled "A Type of Arc Ignition Device" published on June 11, 2021. The arc of the ignition device proposed is about 2 cm, which is relatively short. The strength of the arc flame or the length of the arc generated by the ignition gun is a key factor to ensure successful ignition. For example, if the arc is too short and the spark is too small, it will not be conducive to igniting the harmful gases emitted, thereby polluting the environment or causing safety accidents.

[0003] The working principle of the arc ignition gun of the existing ignition device is: the arc is generated by breaking through the air at the muzzle, which makes the arc shorter. If the arc is to be strengthened, the entire ignition device needs to be redesigned, and the voltage needs to be continuously increased, even to ultra-high voltage, which is extremely dangerous and is not applicable in this field.

[0004] At present, the arc ignition guns used on site are high-energy arc ignition guns, whose arc can only reach 1~2cm. The best plasma arc ignition guns, even with a blower at the rear end, can only blow the arc out about 5~6cm. Moreover, they are easily affected by the environment and strong winds and heavy rains, making it impossible to ignite. They cannot meet the ignition requirements on site, resulting in ignition failure.

[0005] Therefore, the industry is still optimizing existing equipment, hoping to strengthen and lengthen the arc of the existing ignition gun without changing the existing arc ignition device to meet customer needs. Utility Model Content

[0006] The utility model aims to solve the problem of short arc in arc ignition devices in the prior art, and proposes an arc strengthening device and an ignition gun using the device, which has a simple structure and practical functions, does not change the original design of the ignition device, and can strengthen and lengthen the existing arc ignition gun.

[0007] In order to achieve the above-mentioned invention object, the technical solution of the utility model is as follows:

[0008] The arc strengthening device comprises a device body, which is in a cylindrical or semi-cylindrical structure and is provided with a plurality of ventilation holes. One end of the device body is connected to an arc gun nozzle.

[0009] Furthermore, the device body is connected and fixed to the arc gun nozzle via threads.

[0010] Furthermore, the device body is fixed to the arc gun nozzle by welding.

[0011] Furthermore, the device body has a cylindrical, semi-cylindrical or arc-cylindrical cover structure.

[0012] Furthermore, a plurality of long strip ventilation holes are evenly distributed in the axial direction of the device body.

[0013] Furthermore, the device body is made of high temperature resistant and fire resistant materials.

[0014] A plasma ignition gun uses the aforementioned arc intensification device, further comprising a straight tube and a conductive shaft, wherein the conductive shaft is fixed in the straight tube through a plurality of positioning plates, one end of the conductive shaft is connected to a power source, and the other end is connected to an electrode, a conical arc gun nozzle is connected to the side of the straight tube away from the power source, and the other end of the arc gun nozzle is connected to the arc intensification device.

[0015] Furthermore, a fan is provided at one end of the straight tube away from the arc gun nozzle, and the fan supplies air to the arc gun nozzle through the straight tube. The end of the straight tube close to the fan is connected to a U-shaped cover through a connecting plate I.

[0016] Furthermore, the fan is connected and fixed to the straight pipe via a connecting plate II and fasteners.

[0017] Furthermore, a through hole is provided on the positioning plate.

[0018] Beneficial effects of the utility model:

[0019] 1. In the utility model, the arc strengthening device is installed on the traditional plasma ignition gun, which can effectively increase the arc, so that the traditional arc is increased from 1~6cm to 15~20cm, which can not only keep the existing ignition device design unchanged, but also truly play a strong ignition role.

[0020] 2. In the present invention, the preferred structure of the arc strengthening device is that the device body is a tubular structure or a cylindrical structure. Such a structure can wrap the entire "arc" in the device body, effectively extending the arc in the length direction of the straight tube, and at the same time increase the arc's ability to resist harsh environments such as wind and rain.

[0021] 3. In the utility model, a plurality of long strip ventilation holes are evenly distributed in the axial direction of the device body of the arc enhancement device, so that the device can be supplemented with sufficient air, which can ensure successful ignition.

[0022] Fourth, the utility model provides a plasma ignition gun with a simple and ingenious structure, which is easier to process, convenient to disassemble and transport, and is also provided with an arc strengthening device to increase the arc to 15-20cm.

[0023] 5. In the utility model, a fan is added in the plasma ignition gun, and the fan supplies air to the nozzle end of the arc gun through a straight pipe, which can lengthen the arc to a certain extent.

[0024] 6. In the utility model, a plurality of through holes are evenly arranged on the positioning plate, so that the fan can supply air to the nozzle end of the arc gun through the straight pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure in which the arc enhancement device in Example 1 is installed at the arc gun nozzle.

[0026] Figure 2 yes Figure 1 AA section view.

[0027] Figure 3 It is a schematic diagram of the structure in which the arc enhancement device in Example 2 is installed at the arc gun nozzle.

[0028] Figure 4 yes Figure 3 AA section view.

[0029] Figure 5 It is a schematic diagram of the structure in which the arc enhancement device in Example 3 is installed at the arc gun nozzle.

[0030] Figure 6 yes Figure 5 AA section view.

[0031] Figure 7 It is a schematic diagram of the structure in which the arc enhancement device in Example 4 is installed at the arc gun nozzle.

[0032] Figure 8 yes Figure 7 AA section view.

[0033] Fig. 9 It is a schematic diagram of the structure of the plasma igniter of Example 5.

[0034] Fig.10 This is a partial enlargement of the plasma igniter. Figure 1 .

[0035] Fig.11 This is a partial enlargement of the plasma igniter. Figure 2 (With arc intensification device).

[0036] Fig.12 It is a structural diagram of the positioning plate.

[0037] Among them, 1. arc enhancement device; 2. straight tube; 3. conductive shaft; 4. positioning plate; 5. power supply; 6. electrode; 7. arc gun nozzle; 8. fan; 9. connecting plate I; 10. U-shaped cover; 11. connecting plate II; 12. through hole; 1.1. device body; 1.2. ventilation hole; 1.2.1. long strip ventilation hole. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0039] Example 1

[0040] To facilitate the public to understand the present solution, this embodiment takes an arc enhancement device with a better structure as an example to further illustrate the present solution.

[0041] refer to Figure 1-2 The arc enhancement device 1 comprises a device body 1.1, which is in a cylindrical structure. A plurality of long strip ventilation holes 1.2.1 are provided on the device body 1.1, and one end of the device body 1.1 is connected to the arc gun nozzle 7.

[0042] It should be noted that the cylindrical structure of the device body 1.1 in this solution does not mean that the cross section of the device body 1.1 can only be circular, but can also be hexagonal, octagonal, pentagonal, etc. The device body 1.1 in this embodiment is cylindrical on the one hand to match the shape of the arc gun nozzle 7, and on the other hand, the cylindrical device body 1.1 is not easy to accumulate sand and is more practical.

[0043] In this embodiment, the device body 1.1 is made of high temperature resistant and fire resistant materials.

[0044] Preferably, the device body 1.1 is connected and fixed to the arc gun nozzle 7 via threads.

[0045] In actual application, the device body 1.1 and the arc gun nozzle 7 can be fixed by welding. The arc strengthening device 1 is installed on the existing plasma ignition gun, so that the arc can move freely in the cylindrical cover structure, making the arc thicker and stronger, and the arc coverage is wider. The arc strengthening device 1 can protect the arc and improve the ability to resist harsh environments such as wind and rain, so that the traditional plasma ignition gun can effectively extend the arc without changing other structures.

[0046] Taking the traditional plasma ignition gun with air supply fan as an example, when the arc strengthening device 1 is not installed, when the voltage is 10,000 volts, the arc length is about 1-4 cm, and when the voltage is increased to 20,000 volts, the arc length can reach about 4-6 cm. Although the higher the voltage, the longer the arc can be, it means that the energy consumption is also higher and more dangerous; when the arc strengthening device 1 is added (the arc strengthening device 1 has a diameter of about 34 mm and a length of about 20 cm, and the device body 1.1 of the arc strengthening device 1 has 6 long strip ventilation holes 1.2.1 on the axial direction of the outer periphery, refer to Figure 1 ), when the voltage is 10,000 volts, the arc length is about 15~17cm. When the voltage is increased to 20,000 volts, the arc length is about 17~20cm. It can be seen that the traditional plasma ignition gun can still increase the traditional arc from 1~6cm to 15~20cm without changing other structures, which has high practicality.

[0047] Example 2

[0048] The difference between this embodiment and embodiment 1 is that the device body 1.1 is cylindrical and has a plurality of ventilation holes 1.2 evenly distributed on the device body 1.1. Figure 3-4 The ventilation hole 1.2 may be circular, square or other special-shaped structures to facilitate the contact between the combustible gas and the arc. The ventilation hole 1.2 is smaller than the ventilation hole 1.2 in Example 1.

[0049] Example 3

[0050] The difference between this embodiment and embodiment 1 is that the device body 1.1 is a semi-cylindrical or arc-shaped cylindrical structure, and the device body 1.1 is evenly distributed with long strip ventilation holes 1.2.1. Figure 5-6 .

[0051] Example 4

[0052] The difference between this embodiment and embodiment 2 is that the device body 1.1 is a semi-cylindrical or arc-shaped cylindrical structure. Figure 7-8 .

[0053] After installing the arc enhancement device in Examples 1 to 4 on the same plasma igniter for testing, it was found that the arc lengths of the four plasma igniters were similar and not much different; compared with the other two schemes, the plasma igniter using the arc enhancement device of Examples 1 and 2 had poor resistance to harsh environments such as wind and rain because part of the arc was exposed to the outside; compared with the other scheme, the plasma igniter using the arc enhancement device of Examples 1, 3, and 4 had a thicker arc in a windless and rainless environment because the area in contact with the air was larger. In general, the plasma igniter using the arc enhancement device of Example 1 had a wider arc activity range, a long and thick arc, a stable arc, and a high ignition success rate; in addition, the arc could be clearly observed, which was convenient for staff or monitoring equipment to monitor it.

[0054] Example 5

[0055] This embodiment is another preferred embodiment of a plasma ignition gun, comprising a straight tube 2 and a conductive shaft 3, using an arc enhancement device 1 as in embodiment 1, Fig. 9 , 10 A conductive shaft 3 is fixed in the straight tube 2 through a plurality of positioning plates 4, one end of the conductive shaft 3 is connected to a power source 5, and the other end is connected to an electrode 6. A conical arc gun nozzle 7 is connected to the side of the straight tube 2 away from the power source 5, and the other end of the arc gun nozzle 7 is connected to an arc intensification device 1.

[0056] In actual use, an air supply device or an air supply pipe can be introduced into the plasma ignition gun as required to extend the arc length.

[0057] Example 6

[0058] The difference between this embodiment and embodiment 5 is that a fan 8 is provided at one end of the straight tube 2 away from the arc gun nozzle 7. Fig.10 The fan 8 supplies air to the arc gun nozzle 7 through the straight pipe 2, and the end of the straight pipe 2 close to the fan 8 is connected to a U-shaped cover 10 through a connecting plate Ⅰ9.

[0059] In this embodiment, the fan 8 is connected and fixed to the straight pipe 2 via a connecting plate II 11 and fasteners.

[0060] Preferably, the positioning plate 4 is provided with a through hole 12, Fig.12 .

[0061] The plasma ignition gun in this embodiment has a simple and ingenious structure, is easier to process, and is convenient to disassemble, assemble and carry. The arc can be increased to 15-20 cm.

Claims

1. An arc strengthening device, characterized in that: The device comprises a device body (1.1), which is in a cylindrical or semi-cylindrical structure, has a plurality of ventilation holes (1.2) formed on the device body (1.1), and one end of the device body (1.1) is connected to an arc gun nozzle (7).

2. The arc enhancement device according to claim 1, characterized in that: The device body (1.1) is connected and fixed to the arc gun nozzle (7) via a thread.

3. The arc enhancement device according to claim 1, characterized in that: The device body (1.1) is fixed to the arc gun nozzle (7) by welding.

4. The arc enhancement device according to any one of claims 1 to 3, characterized in that: The device body (1.1) is a cylindrical, semi-cylindrical or arc-shaped cylindrical cover structure.

5. The arc enhancement device according to claim 4, characterized in that: A plurality of long strip-shaped ventilation holes (1.2.1) are evenly distributed in the axial direction of the device body (1.1).

6. The arc enhancement device according to claim 4, characterized in that: The device body (1.1) is made of high temperature resistant and fire resistant materials.

7. A plasma ignition gun, characterized in that: The arc intensifying device (1) as claimed in claim 1 further comprises a straight tube (2) and a conductive shaft (3), wherein the conductive shaft (3) is fixed in the straight tube (2) by a plurality of positioning plates (4), one end of the conductive shaft (3) is connected to a power source (5), and the other end is connected to an electrode (6), a conical arc gun nozzle (7) is connected to the side of the straight tube (2) away from the power source (5), and the other end of the arc gun nozzle (7) is connected to the arc intensifying device (1).

8. A plasma ignition gun according to claim 7, characterized in that: A fan (8) is provided at one end of the straight tube (2) away from the arc gun nozzle (7), and the fan (8) supplies air to the arc gun nozzle (7) through the straight tube (2). The end of the straight tube (2) close to the fan (8) is connected to a U-shaped cover (10) via a connecting plate I (9).

9. A plasma ignition gun according to claim 8, characterized in that: The fan (8) is connected and fixed to the straight pipe (2) via a connecting plate II (11) and fasteners.

10. A plasma ignition gun according to claim 7, characterized in that: The positioning plate (4) is provided with a through hole (12).

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