Replaceable air plasma jet long cable handle with low capacitive reactance

Abstract

The invention discloses a low capacitive reactance and replaceable air plasma jet long cable handle, which comprises a handle, two ends of the handle are respectively provided with a spray head and a high-voltage ventilation long cable, the tail end of the high-voltage ventilation long cable is connected with a socket through a plug, a grounding electrode and a high-voltage electrode are arranged in the handle, one end of the spray head is provided with a small hole, and the other end of the spray head is connected with the grounding electrode. An air pipe, a high-voltage wire and a grounding wire are arranged in the high-voltage ventilation long cable, the high-voltage wire is connected with the high-voltage electrode and the plug, the grounding wire is connected with the grounding electrode and the plug, and the tail end of the air pipe is connected with the plug. According to the low-capacitive-reactance replaceable air plasma jet long cable handle, the problems that an existing jet handle is low in energy utilization efficiency and high in clinical cross infection risk are solved, and according to the cable structure, the distributed capacitance of the cable can be reduced through low-dielectric-constant working air; the problems of electric energy loss and heating caused by large distributed capacitance are avoided, the consumption of insulating materials in the cable can be reduced, and the weight of the long cable is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of plasma generation devices, specifically relating to a low-capacitance, replaceable long cable handle for air plasma jets. Background Technology

[0002] Air plasma is rich in high-energy electrons, ions, free radicals, and reactive nitrogen and oxygen components. When it acts on the surface of materials or biological tissues, it can efficiently inactivate bacteria, viruses, and spores through oxidation reactions, making it valuable in medical applications such as medical device disinfection, wound disinfection, hemostasis and coagulation, and scalp drug delivery. Jet-type air plasma can utilize the synergistic effect of flow and electric fields to carry the ionized plasma out of the high-voltage discharge region and act on the surface of the object being treated. This overcomes the limitation of the narrow discharge space on the size of the target object, giving it significant advantages in clinical medicine.

[0003] In clinical trials and surgeries, operators need to drag the handle from a sterile area 3-5 meters away to the sterile area of ​​the operating table. However, the high equivalent capacitive reactance between the high-voltage line and the grounding line in the compact handle cable limits the energy harvesting efficiency of the front-end reactor. This effect is more severe at high voltages and high frequencies, with efficiency even falling below 1 / 10. Extending the cable length amplifies the capacitive impedance, which not only reduces plasma stability but also affects operational safety due to significant energy loss and localized heating in the cable. Currently, most clinical plasma jet devices use short cable handles of 0.5-1 meter, which restricts the operating space for medical staff. There is an urgent need for a long cable with low capacitive reactance.

[0004] For safety reasons related to high-voltage operation and stability of gas-electric hybrid supply, all current air plasma jet devices generally adopt an integrated structural design. This means the gas and power supply circuits in the handle are directly connected to the internal air pump and high-voltage generator of the main unit, making disassembly and replacement impossible in actual clinical use. This integrated design presents two problems. First, the electrode assembly on the back of the air plasma jet handle operates under an arc plasma environment for extended periods. Even using high-melting-point metals like tungsten and molybdenum, discharge performance inevitably degrades due to arc erosion and chemical oxidation. The integrated design makes electrode replacement inconvenient for operators. Second, operating rooms require a high degree of sterility. To prevent cross-infection between patients, instruments that come into contact with patients must be replaced after each use. The integrated design makes this replacement cumbersome, requiring professional personnel to disassemble multiple gas supply and high-voltage connections, resulting in lengthy operations and potential contamination of the sterile environment.

[0005] In summary, the design and implementation of a medical air plasma jet long cable handle with low equivalent capacitive reactance and pluggable replacement, while also meeting the requirements for air supply connection, high voltage connection, and low voltage signal connection, is crucial for ensuring the safety of clinical users and patients. Summary of the Invention

[0006] The purpose of this invention is to provide a low-capacitance, replaceable long cable handle for air plasma jets, which solves the problem of inconvenient replacement of existing jet handles.

[0007] The technical solution adopted in this invention is a low-capacitance, replaceable air plasma jet long cable handle, including a handle, with a nozzle and a high-voltage ventilation cable respectively at both ends of the handle. The end of the high-voltage ventilation cable is connected to a socket via a plug. The handle is equipped with a grounding electrode and a high-voltage electrode. One end of the nozzle has a small hole, and the other end is connected to the grounding electrode. The high-voltage ventilation cable is equipped with an air tube, a high-voltage wire, and a grounding wire. The high-voltage wire is connected to the high-voltage electrode and the plug, and the grounding wire is connected to the grounding wire and the plug. The end of the air tube is connected to the plug.

[0008] The technical solution adopted in this invention is also characterized by: Furthermore, the handle includes a handle housing, which is divided into upper and lower parts and connected by screws. An insulating sleeve is installed inside the handle housing. One end of the insulating sleeve extends out of the handle housing and is equipped with a grounding electrode. The grounding electrode is connected to a grounding wire. An insulating porous air channel is installed inside the insulating sleeve. A high-voltage electrode is installed at the front end of the insulating porous air channel. The front end of the high-voltage electrode is close to the nozzle opening. The insulating porous air channel has an air channel connected to the outside in a ring array inside. A temperature sensor is installed at the end of the insulating porous air channel near the grounding electrode.

[0009] Furthermore, the grounding electrode is fitted onto the front end of the insulating sleeve and fixed to the insulating sleeve by multiple evenly distributed limiting screws. A small groove is opened inside the grounding electrode to place an O-ring to ensure the airtightness of the device, and it is connected to the socket through a grounding wire.

[0010] Furthermore, the high-voltage ventilation cable includes a silicone hose, inside which are installed an air tube, a grounding wire, and a temperature signal line. The temperature signal line is connected to a temperature sensor, and a high-voltage wire is installed inside the air tube.

[0011] Furthermore, the plug includes a metal grounded shell, one end of which is respectively provided with a temperature signal plug, a gas pipe connector, a high-voltage plug, an impedance detection connector, and a plug-in identification connector. The high-voltage plug is connected to a high-voltage conductor, the metal grounded shell is connected to a grounding wire, the gas pipe connector is connected to a gas pipe, and the temperature signal line connector is connected to a temperature signal line.

[0012] Furthermore, the socket includes a power supply and control host, which is equipped with female connectors, including a high-voltage female connector, a grounding female connector, a gas tube female connector, a temperature signal female connector, an impedance detection female connector, and a plug-in identification female connector. The high-voltage female connector and the grounding female connector are respectively connected to the high-voltage plug and the metal grounding shell, the gas tube female connector is connected to the gas tube connector, the temperature signal female connector is connected to the temperature signal line connector, the impedance detection female connector is connected to the impedance detection connector, and the plug-in identification female connector is connected to the plug-in identification connector.

[0013] Furthermore, the power supply and control host is equipped with an air pump and a power output. The female connector is connected to the air pump through a T-connector, and the other end of the T-connector is connected to the power output (4-9) through a high-voltage line.

[0014] Furthermore, the nozzle is specifically a metal grounded nozzle, and the high-voltage electrode is specifically a high-voltage needle electrode.

[0015] Furthermore, the nozzle is specifically a head sliding arc nozzle, and the high-voltage electrode is specifically a high-voltage blade electrode. The high-voltage blade electrode is set inside the head sliding arc nozzle. A grounding blade electrode is also set at the relative position of the high-voltage blade electrode inside the head sliding arc nozzle. The grounding blade electrode is connected to the grounding electrode. The end of the insulated porous gas channel separates the high-voltage wire from the gas passage through a gas-electric separation channel with a three-way pipe structure.

[0016] The beneficial effects of this invention are: (1) The plasma jet handle uses a compact, low-capacitance high-voltage ventilation cable. The high-voltage line is arranged in the middle of the air tube, and the grounding wire is wrapped around the outer wall of the air tube. The air tube has both air conduction and insulation functions. This structure can not only reduce the amount of insulation material used in the cable and reduce the weight of the long cable, making it easier for medical staff to operate, but also use low dielectric constant working air to reduce the distributed capacitance of the cable and avoid the power loss and heat generation problems caused by large distributed capacitance.

[0017] (2) The plasma jet handle has a gas-electric hybrid plug at the end of the long cable. Through the tail plug encapsulation and corresponding female socket design, the handle and the control host can be quickly plugged in and out. This can ensure the stable connection of high pressure gas and high voltage in the working state, and also facilitate medical staff to replace the jet handle. Under the premise of ensuring the medical and health care of patients during treatment, it avoids the threat to equipment and personal safety of operators to disassemble high voltage components.

[0018] (3) The plasma jet handle can integrate high-voltage wires, grounding wires, and temperature sensing signal lines in a compact long cable, simultaneously conduct air and circuits, and monitor the air plasma generator through the front-end temperature sensor to ensure equipment safety.

[0019] (4) The plasma jet handle has an impedance detection and insertion identification connector in the plug package, which can determine the electrode structure type inserted into the plasma jet handle and output the corresponding excitation voltage when the connector is securely inserted. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the needle ring plasma jet handle structure in Embodiment 1 of the present invention; Figure 2 This is an unfolded view of the internal structure of the needle ring plasma jet handle in Embodiment 1 of the present invention; Figure 3 This is an unfolded view of the internal structure of the sliding arc plasma jet handle in Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the compact, low-capacitive-resistance high-voltage venting long cable of the present invention; Figure 5 This is a schematic diagram of the encapsulation structure of the jet cable handle plug in this invention; Figure 6 This is a schematic diagram of the jet cable handle plug socket and control host structure in this invention; Figure 7 This is a schematic diagram of the internal structure of the jet cable handle plug socket and the control host in this invention; Figure 8 This is a schematic diagram of the low capacitance and replaceable jet cable handle in this invention.

[0021] As shown in the figure: 1. Handle, 1-1. Nozzle, 1-2. Grounding electrode, 1-3. Limit screw, 1-4. Insulating sleeve, 1-5. High voltage electrode, 1-6. Handle housing, 1-7. Insulating porous air channel, 1-8. Temperature sensor; 2. High-voltage ventilation cable, 2-1. Silicone hose, 2-2. Air tube, 2-3. High-voltage conductor, 2-4. Grounding conductor, 2-5. Temperature signal line; 3. Plug, 3-1. Metal grounding shell, 3-2. Temperature signal line connector, 3-3. Gas pipe connector, 3-4. High voltage plug, 3-5. Impedance detection connector, 3-6. Plug-in / plug-out identification connector; 4. Socket; 4-1. Control host; 4-2. High voltage female connector; 4-3. Grounding female connector; 4-4. Gas pipe female connector; 4-5. Temperature signal female connector; 4-6. Impedance detection female connector; 4-7. Insertion / removal identification female connector; 4-8. Air pump; 4-9. Power output; 4-10. Grounding wire; 4-11. High voltage wire; 4-12. T-connector; 5-1. Metal grounded nozzle; 5-5. High-pressure needle electrode; 6-1. Head sliding arc nozzle, 6-5. High-pressure blade electrode, 6-8. Grounding blade electrode, 6-9. Gas-electric separation channel. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0023] The present invention provides a low-capacitance, replaceable air plasma jet long cable handle, which can solve the problem of inconvenience in replacing the jet handle after each use in the prior art. Figure 8 This invention presents a technical schematic diagram of a plasma jet device for traditional Chinese medicine. Through a jet handle, a long cable, and a plug-in connector, it achieves flexible biomedical applications of plasma jets. The plasma jet handle employs a compact, low-capacitance, high-voltage ventilation cable and is designed with a gas-electric hybrid plug for easy replacement by medical personnel. During normal operation, the control unit outputs a corresponding excitation voltage based on the different electrode structures of the inserted plasma jet handle. The air between the high-voltage electrode and the grounding electrode near the nozzle is ionized to generate plasma. The airflow from the air passage blows out of the nozzle, forming a plasma plume that acts on the treatment site, achieving a therapeutic effect. The plasma generated by the gas discharge contains abundant high-energy ions and active substances, which can effectively kill bacteria on the wound surface and accelerate wound healing. The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Example 1 Based on the technical principles of plasma jetting, this embodiment presents a plasma jetting handle with a needle-ring electrode structure. However, it should be noted that the design concept of the plasma jetting handle proposed in this invention is not limited to the above structure; this structure is merely used as an example to explain the technical idea and specific implementation of this invention.

[0025] A low-capacitance, replaceable air plasma jet long cable handle, such as Figure 1 and Figure 2 As shown, it mainly includes a metal grounded nozzle 1-1, a grounding electrode 1-2, a limiting screw 1-3, an insulating sleeve 1-4, a handle housing 1-6, a silicone hose 2-1, and a grounding wire 2-4. To clearly understand the internal structure of the handle, Figure 2 A further detailed internal structure diagram of the needle-ring plasma jet handle is provided. The ground electrode consists of two parts: a metal grounding nozzle 1-1 and a grounding electrode 1-2. One end of the grounding nozzle 1-1 has a small hole serving as a plasma plume ejection channel, while the other end is connected to the grounding electrode 1-2 via a threaded structure. The grounding electrode 1-2 is fixed to the insulating sleeve 1-4 by multiple evenly distributed limiting screws 1-3. A small groove is provided inside the grounding electrode 1-2 to accommodate an O-ring seal, ensuring the airtightness of the device. It is also connected to the power ground wire via a grounding wire 2-4 outside the insulating sleeve.

[0026] The internal structure of the insulated porous air duct 1-7 is arranged in a ring array, connecting to the outside to ensure that the gas supplied by the air pump can reach the plasma plume nozzle uniformly and stably. The high-pressure needle electrode 5-5 is fixed inside the porous air duct 1-7, and its tail is connected to the power supply via a high-pressure wire 2-3. A temperature sensor 1-8 is installed at the end of the insulated porous air duct 1-7 near the grounding electrode 1-2 to monitor the temperature in real time during plasma jet handle operation. When an abnormality is detected, the power supply is suspended via signal line 2-5. The handle housing 1-6 is divided into upper and lower parts, which are disassembled and assembled using four screws. During normal operation, the high-pressure needle electrode 5-5 and the metal grounded nozzle 5-1 are connected to the grounding electrode 1-2 via the high-pressure wire 2-3 and ground potential, respectively, generating plasma through discharge near the nozzle. The airflow from the air duct blows out of the nozzle, forming a plasma plume.

[0027] Figure 4 A schematic diagram of the compact, low-capacitive-resistance high-voltage ventilation cable of this invention is provided, comprising a silicone tubing 2-1, an air tube 2-2, a high-voltage wire 2-3, a grounding wire 2-4, and a temperature signal line 2-5. All wiring is embedded inside the long tubing to form a long cable capable of conducting electricity and air. One end connects to the plasma reactor handle, and the other end forms a plug that connects to the corresponding female connector on the control unit. The high-voltage wire is positioned in the middle of the air tube, and the grounding wire is wrapped around the outer wall of the air tube. The air tube serves both as a conduit for air and as insulation. This structure not only reduces the amount of insulation material used in the cable and lowers its weight, facilitating operation by medical personnel, but also utilizes the low dielectric constant working air to reduce the distributed capacitance of the cable, avoiding power loss and heat generation problems caused by large distributed capacitance. Figures 5-6 The invention provides a schematic diagram of the plasma jet handle plug packaging structure, corresponding female connector, and control host. The internal structure schematic diagrams of the long-cable jet handle plug female connector and control host are shown below. Figure 7As shown, the system includes a metal grounded housing 3-1, a temperature signal line connector 3-2, an air hose connector 3-3, a high-voltage plug 3-4, an impedance detection connector 3-5, a plug-in identification connector 3-6, a control unit 4-1, a high-voltage female connector 4-2, a grounding female connector 4-3, an air hose female connector 4-4, a temperature signal female connector 4-5, an impedance detection female connector 4-6, a plug-in identification female connector 4-7, an air pump 4-8, a power output connector 4-9, a grounding wire 4-10, a high-voltage wire 4-11, and a tee connector 4-12. When the plug is inserted, the high-voltage plug 3-2 connects to the high-voltage female connector 4-2, and the metal grounded housing 3-1 connects to the power output port via the high-voltage wire 4-11 and the grounding wire 4-10, respectively, thus obtaining high voltage and ground potential. The air hose connector 3-3 connects to the air hose female connector 4-4 to obtain filtered sterile airflow. The control unit connects to the impedance detection connector 3-5 of the handle via a signal line, using the impedance detection female connector 4-6 to determine the type of electrode structure of the inserted plasma jet handle and outputting the corresponding excitation voltage. The insertion / removal identification connector 3-6 is the shortest; a reliable connection is only established when this connector is stably connected to the insertion / removal identification female connector 4-7, allowing the equipment to output the excitation voltage.

[0028] Example 2 Based on the technical principles of plasma jetting, this embodiment presents a sliding arc blade-type plasma jet handle. However, it should be noted that the design concept of the plasma jet handle proposed in this invention is not limited to the above structure; this structure is merely used as an example to explain the technical idea and specific implementation of this invention.

[0029] A low-capacitive, replaceable air plasma jet long cable handle with a sliding arc electrode structure, such as... Figure 3 As shown, its grounding electrode 1-2; limiting screw 1-3; insulating sleeve 1-4; handle housing 1-6; insulating porous air channel 1-7; and silicone hose 2-1 are all consistent with the needle ring structure plasma handle. At the end of the insulating porous air channel 1-7, the high-voltage wire 2-3 is separated from the gas passage by a gas-electric separation channel 6-9 with a three-way pipe structure, facilitating the connection of the high-voltage electrode. The nozzle of the sliding arc nozzle 6-1 is flat. During normal operation, the internal high-voltage blade electrode 6-5 is connected to high voltage through the high-voltage wire 2-3, and the grounding blade electrode 6-8 is connected to the grounding electrode 1-2. Breakdown occurs at the point where the distance between the two blade electrodes is minimal, forming an arc discharge. The airflow from the air channel blows the arc wire upward, and the discharge changes from a local equilibrium state to a non-equilibrium state, generating a large number of oxidizing active particles, which are blown out of the nozzle to form a plasma plume.

[0030] Example 3 A low-capacitance, replaceable air plasma jet long cable handle includes a handle 1, with a nozzle 1-1 and a high-voltage ventilation long cable 2 at both ends of the handle 1. The end of the high-voltage ventilation long cable 2 is connected to a socket 4 via a plug 3. The handle 1 has a grounding electrode 1-2 and a high-voltage electrode 1-5 inside. One end of the nozzle 1-1 has a small hole, and the other end is connected to the grounding electrode 1-2. The high-voltage ventilation long cable 2 has an air tube 2-2, a high-voltage wire 2-3, and a grounding wire 2-4 inside. The high-voltage wire 2-3 connects the high-voltage electrode 1-5 and the plug 3, and the grounding wire 2-4 connects the grounding electrode 1-2 and the plug 3. The end of the air tube 2-2 is connected to the plug 3.

[0031] The handle 1 includes a handle housing 1-6, which is divided into upper and lower parts and connected by screws. An insulating sleeve 1-4 is provided inside the handle housing 1-6. One end of the insulating sleeve 1-4 extends out of the handle housing 1-6 and is provided with a grounding electrode 1-2 at the end. The grounding electrode 1-2 is connected to the grounding wire 2-4. An insulating porous air channel 1-7 is provided inside the insulating sleeve 1-4. A high-voltage electrode 1-5 is provided at the front end of the insulating porous air channel 1-7. The front end of the high-voltage electrode 1-5 is close to the opening of the nozzle 1-1. The insulating porous air channel 1-7 has air channels connected to the outside in a ring array inside. A temperature sensor 1-8 is provided at the end of the insulating porous air channel 1-7 near the grounding electrode 1-2.

[0032] The grounding electrode 1-2 is sleeved on the front end of the insulating sleeve 1-4 and fixed to the insulating sleeve 1-4 by multiple evenly distributed limiting screws 1-3. The grounding electrode 1-2 has a small groove inside for placing an O-ring to ensure the airtightness of the device, and is connected to the socket 4 through the grounding wire 2-6.

[0033] The high-voltage ventilation cable 2 includes a silicone hose 2-1. Inside the silicone hose 2-1 are an air tube 2-2, a grounding wire 2-4, and a temperature signal line 2-5. The temperature signal line 2-5 is connected to a temperature sensor 1-8. Inside the air tube 2-2 is a high-voltage wire 2-3.

[0034] Example 4 A low-capacitance, replaceable air plasma jet long cable handle includes a handle 1, with a nozzle 1-1 and a high-voltage ventilation long cable 2 at both ends of the handle 1. The end of the high-voltage ventilation long cable 2 is connected to a socket 4 via a plug 3. The handle 1 has a grounding electrode 1-2 and a high-voltage electrode 1-5 inside. One end of the nozzle 1-1 has a small hole, and the other end is connected to the grounding electrode 1-2. The high-voltage ventilation long cable 2 has an air tube 2-2, a high-voltage wire 2-3, and a grounding wire 2-4 inside. The high-voltage wire 2-3 connects the high-voltage electrode 1-5 and the plug 3, and the grounding wire 2-4 connects the grounding electrode 1-2 and the plug 3. The end of the air tube 2-2 is connected to the plug 3.

[0035] The handle 1 includes a handle housing 1-6, which is divided into upper and lower parts and connected by screws. An insulating sleeve 1-4 is provided inside the handle housing 1-6. One end of the insulating sleeve 1-4 extends out of the handle housing 1-6 and is provided with a grounding electrode 1-2 at the end. The grounding electrode 1-2 is connected to the grounding wire 2-4. An insulating porous air channel 1-7 is provided inside the insulating sleeve 1-4. A high-voltage electrode 1-5 is provided at the front end of the insulating porous air channel 1-7. The front end of the high-voltage electrode 1-5 is close to the opening of the nozzle 1-1. The insulating porous air channel 1-7 has air channels connected to the outside in a ring array inside. A temperature sensor 1-8 is provided at the end of the insulating porous air channel 1-7 near the grounding electrode 1-2.

[0036] The grounding electrode 1-2 is sleeved on the front end of the insulating sleeve 1-4 and fixed to the insulating sleeve 1-4 by multiple evenly distributed limiting screws 1-3. The grounding electrode 1-2 has a small groove inside for placing an O-ring to ensure the airtightness of the device, and is connected to the socket 4 through the grounding wire 2-6.

[0037] The high-voltage ventilation cable 2 includes a silicone hose 2-1. Inside the silicone hose 2-1 are an air tube 2-2, a grounding wire 2-4, and a temperature signal line 2-5. The temperature signal line 2-5 is connected to a temperature sensor 1-8. Inside the air tube 2-2 is a high-voltage wire 2-3.

[0038] The plug 3 includes a metal grounding shell 3-1. One end of the metal grounding shell 3-1 is respectively provided with a temperature signal plug 3-2, a gas pipe connector 3-3, a high-voltage plug 3-4, an impedance detection connector 3-5, and a plug-in identification connector 3-6. The high-voltage plug 3-4 is connected to a high-voltage wire 2-3. The metal grounding shell 3-1 is connected to a grounding wire 2-6. The gas pipe connector 3-3 is connected to a gas pipe 2-2. The temperature signal wire connector 3-2 is connected to a temperature signal wire 2-5.

[0039] Example 5 A low-capacitance, replaceable air plasma jet long cable handle includes a handle 1, with a nozzle 1-1 and a high-voltage ventilation long cable 2 at both ends of the handle 1. The end of the high-voltage ventilation long cable 2 is connected to a socket 4 via a plug 3. The handle 1 has a grounding electrode 1-2 and a high-voltage electrode 1-5 inside. One end of the nozzle 1-1 has a small hole, and the other end is connected to the grounding electrode 1-2. The high-voltage ventilation long cable 2 has an air tube 2-2, a high-voltage wire 2-3, and a grounding wire 2-4 inside. The high-voltage wire 2-3 connects the high-voltage electrode 1-5 and the plug 3, and the grounding wire 2-4 connects the grounding electrode 1-2 and the plug 3. The end of the air tube 2-2 is connected to the plug 3.

[0040] The handle 1 includes a handle housing 1-6, which is divided into upper and lower parts and connected by screws. An insulating sleeve 1-4 is provided inside the handle housing 1-6. One end of the insulating sleeve 1-4 extends out of the handle housing 1-6 and is provided with a grounding electrode 1-2 at the end. The grounding electrode 1-2 is connected to the grounding wire 2-4. An insulating porous air channel 1-7 is provided inside the insulating sleeve 1-4. A high-voltage electrode 1-5 is provided at the front end of the insulating porous air channel 1-7. The front end of the high-voltage electrode 1-5 is close to the opening of the nozzle 1-1. The insulating porous air channel 1-7 has air channels connected to the outside in a ring array inside. A temperature sensor 1-8 is provided at the end of the insulating porous air channel 1-7 near the grounding electrode 1-2.

[0041] The grounding electrode 1-2 is sleeved on the front end of the insulating sleeve 1-4 and fixed to the insulating sleeve 1-4 by multiple evenly distributed limiting screws 1-3. The grounding electrode 1-2 has a small groove inside for placing an O-ring to ensure the airtightness of the device, and is connected to the socket 4 through the grounding wire 2-6.

[0042] The high-voltage ventilation cable 2 includes a silicone hose 2-1. Inside the silicone hose 2-1 are an air tube 2-2, a grounding wire 2-4, and a temperature signal line 2-5. The temperature signal line 2-5 is connected to a temperature sensor 1-8. Inside the air tube 2-2 is a high-voltage wire 2-3.

[0043] The plug 3 includes a metal grounding shell 3-1. One end of the metal grounding shell 3-1 is respectively provided with a temperature signal plug 3-2, a gas pipe connector 3-3, a high-voltage plug 3-4, an impedance detection connector 3-5, and a plug-in identification connector 3-6. The high-voltage plug 3-4 is connected to a high-voltage wire 2-3. The metal grounding shell 3-1 is connected to a grounding wire 2-6. The gas pipe connector 3-3 is connected to a gas pipe 2-2. The temperature signal wire connector 3-2 is connected to a temperature signal wire 2-5.

[0044] The socket 4 includes a power supply and control host 4-1. The power supply and control host 4-1 is equipped with female connectors, including a high-voltage female connector 4-2, a grounding female connector 4-3, a gas tube female connector 4-4, a temperature signal female connector 4-5, an impedance detection female connector 4-6, and a plug-in identification female connector 4-7. The high-voltage female connector 4-2 and the grounding female connector 4-3 are respectively connected to the high-voltage plug 3-4 and the metal grounding shell 3-1. The gas tube female connector 4-4 is connected to the gas tube connector 3-3. The temperature signal female connector 4-5 is connected to the temperature signal line connector 3-2. The impedance detection female connector 4-6 is connected to the impedance detection connector 3-5. The plug-in identification female connector 4-7 is connected to the plug-in identification connector 3-6.

[0045] Example 6 A low-capacitance, replaceable air plasma jet long cable handle includes a handle 1, with a nozzle 1-1 and a high-voltage ventilation long cable 2 at both ends of the handle 1. The end of the high-voltage ventilation long cable 2 is connected to a socket 4 via a plug 3. The handle 1 has a grounding electrode 1-2 and a high-voltage electrode 1-5 inside. One end of the nozzle 1-1 has a small hole, and the other end is connected to the grounding electrode 1-2. The high-voltage ventilation long cable 2 has an air tube 2-2, a high-voltage wire 2-3, and a grounding wire 2-4 inside. The high-voltage wire 2-3 connects the high-voltage electrode 1-5 and the plug 3, and the grounding wire 2-4 connects the grounding electrode 1-2 and the plug 3. The end of the air tube 2-2 is connected to the plug 3.

[0046] The handle 1 includes a handle housing 1-6, which is divided into upper and lower parts and connected by screws. An insulating sleeve 1-4 is provided inside the handle housing 1-6. One end of the insulating sleeve 1-4 extends out of the handle housing 1-6 and is provided with a grounding electrode 1-2 at the end. The grounding electrode 1-2 is connected to the grounding wire 2-4. An insulating porous air channel 1-7 is provided inside the insulating sleeve 1-4. A high-voltage electrode 1-5 is provided at the front end of the insulating porous air channel 1-7. The front end of the high-voltage electrode 1-5 is close to the opening of the nozzle 1-1. The insulating porous air channel 1-7 has air channels connected to the outside in a ring array inside. A temperature sensor 1-8 is provided at the end of the insulating porous air channel 1-7 near the grounding electrode 1-2.

[0047] The grounding electrode 1-2 is sleeved on the front end of the insulating sleeve 1-4 and fixed to the insulating sleeve 1-4 by multiple evenly distributed limiting screws 1-3. The grounding electrode 1-2 has a small groove inside for placing an O-ring to ensure the airtightness of the device, and is connected to the socket 4 through the grounding wire 2-6.

[0048] The high-voltage ventilation cable 2 includes a silicone hose 2-1. Inside the silicone hose 2-1 are an air tube 2-2, a grounding wire 2-4, and a temperature signal line 2-5. The temperature signal line 2-5 is connected to a temperature sensor 1-8. Inside the air tube 2-2 is a high-voltage wire 2-3.

[0049] The plug 3 includes a metal grounding shell 3-1. One end of the metal grounding shell 3-1 is respectively provided with a temperature signal plug 3-2, a gas pipe connector 3-3, a high-voltage plug 3-4, an impedance detection connector 3-5, and a plug-in identification connector 3-6. The high-voltage plug 3-4 is connected to a high-voltage wire 2-3. The metal grounding shell 3-1 is connected to a grounding wire 2-6. The gas pipe connector 3-3 is connected to a gas pipe 2-2. The temperature signal wire connector 3-2 is connected to a temperature signal wire 2-5.

[0050] The socket 4 includes a power supply and control host 4-1. The power supply and control host 4-1 is equipped with female connectors, including a high-voltage female connector 4-2, a grounding female connector 4-3, a gas tube female connector 4-4, a temperature signal female connector 4-5, an impedance detection female connector 4-6, and a plug-in identification female connector 4-7. The high-voltage female connector 4-2 and the grounding female connector 4-3 are respectively connected to the high-voltage plug 3-4 and the metal grounding shell 3-1. The gas tube female connector 4-4 is connected to the gas tube connector 3-3. The temperature signal female connector 4-5 is connected to the temperature signal line connector 3-2. The impedance detection female connector 4-6 is connected to the impedance detection connector 3-5. The plug-in identification female connector 4-7 is connected to the plug-in identification connector 3-6.

[0051] The power supply and control host 4-1 is equipped with an air pump 4-8 and a power output 4-9. The female connector is connected to the air pump 4-8 through a three-way connector 4-12, and the other port of the three-way connector 4-12 is connected to the power output 4-9 through a high-voltage line 4-11.

Claims

1. A low inductance, replaceable air plasma jet wand handle characterized by, The utility model provides a high voltage and high temperature resistance spraying device, including handle (1), handle (1) both ends are equipped with spray head (1-1) respectively, high voltage and high temperature resistance long cable (2), high voltage and high temperature resistance long cable (2) end is connected with socket (4) through plug (3), handle (1) inside is equipped with grounding electrode (1-2) and high voltage electrode (1-5), spray head (1-1) one end is opened small hole, the other end is connected with grounding electrode (1-2), high voltage and high temperature resistance long cable (2) inside is equipped with air pipe (2-2), high voltage wire (2-3), grounding wire (2-4), high voltage wire (2-3) connects high voltage electrode (1-5) and plug (3), grounding wire (2-4) connects grounding electrode (1-2) and plug (3) connection, air pipe (2-2) end is connected with plug (3).

2. A low inductance, replaceable air plasma jet wand handle according to claim 1, wherein, Handle (1) includes handle shell (1-6), handle shell (1-6) is divided into two parts and is connected by screw pressure, handle shell (1-6) inside is provided with insulating sleeve (1-4), one end of insulating sleeve (1-4) is stretched out of handle shell (1-6) and is provided with grounding electrode (1-2) at end, grounding electrode (1-2) is connected with grounding wire (2-4), insulating sleeve (1-4) inside is provided with insulating porous air passage (1-7), and high voltage electrode (1-5) is arranged at the front end of insulating porous air passage (1-7), and the front end of high voltage electrode (1-5) is close to the opening position of spray head (1-1), and the inside of insulating porous air passage (1-7) is annular array and is provided with air passage connected with the outside, and the one end of insulating porous air passage (1-7) close to grounding electrode (1-2) is provided with temperature sensor (1-8).

3. A low inductance, replaceable air plasma jet wand handle according to claim 2, wherein, The grounding electrode (1-2) is sleeved on the front end of the insulating sleeve (1-4) and is fixed with the insulating sleeve (1-4) by a plurality of evenly distributed limiting screws (1-3). A small groove is opened in the grounding electrode (1-2) for placing an O-shaped sealing ring to ensure the air tightness of the device, and the grounding electrode (1-2) is connected with the socket (4) through the grounding wire (2-6).

4. A low inductance, replaceable air plasma jet wand handle according to claim 3, wherein, The high voltage and high temperature resistance long cable (2) includes a silica gel hose (2-1), and the silica gel hose (2-1) is provided with an air pipe (2-2), a grounding wire (2-4), and a temperature signal line (2-5) inside. The temperature signal line (2-5) is connected with the temperature sensor (1-8), and the air pipe (2-2) is provided with a high voltage wire (2-3) inside.

5. A low inductance, replaceable air plasma jet wand handle according to claim 4, wherein, The plug (3) includes a metal grounding shell (3-1), and the metal grounding shell (3-1) is provided with a temperature signal plug (3-2), an air pipe connector (3-3), a high voltage plug (3-4), an impedance detection connector (3-5), and a plug-in identification connector (3-6) at one end. The high voltage plug (3-4) is connected with the high voltage wire (2-3), the metal grounding shell (3-1) is connected with the grounding wire (2-6), the air pipe connector (3-3) is connected with the air pipe (2-2), and the temperature signal line connector (3-2) is connected with the temperature signal line (2-5).

6. A low inductance, replaceable air plasma jet wand handle according to claim 5, wherein, The socket (4) includes a power supply and control host (4-1), and the power supply and control host (4-1) is provided with a female seat, including a high-voltage female seat (4-2), a grounding female seat (4-3), an air pipe female seat (4-4), a temperature signal female seat (4-5), an impedance detection female seat (4-6), and a plug-in identification female seat (4-7), the high-voltage female seat (4-2) and the grounding female seat (4-3) are connected with a high-voltage plug (3-4) and a metal grounding shell (3-1) respectively, the air pipe female seat (4-4) is connected with an air pipe joint (3-3), the temperature signal female seat (4-5) is connected with a temperature signal wire joint (3-2), the impedance detection female seat (4-6) is connected with an impedance detection joint (3-5), and the plug-in identification female seat (4-7) is connected with a plug-in identification joint (3-6).

7. A low inductance, replaceable air plasma jet wand handle according to claim 6, wherein, The power supply and control host (4-1) is internally provided with an air pump (4-8) and a power output (4-9), the female seat is connected with the air pump (4-8) through a three-way joint (4-12), and another port of the three-way joint (4-12) is connected with the power output (4-9) through a high-voltage wire (4-11).

8. A low inductance, replaceable air plasma jet wand handle according to claim 2, wherein, The spray head (1-1) is specifically a metal grounding spray head (5-1), and the high-voltage electrode (1-5) is specifically a high-voltage needle electrode (5-5).

9. A low inductance, replaceable air plasma jet wand handle according to claim 2, wherein, The spray head (1-1) is specifically a head sliding arc spray head (6-1), the high-voltage electrode (1-5) is specifically a high-voltage blade electrode (6-5), the high-voltage blade electrode (6-5) is arranged in the head sliding arc spray head (6-1), and a grounding blade electrode (6-8) is further arranged at a relative position of the high-voltage blade electrode (6-5) in the head sliding arc spray head (6-1), the grounding blade electrode (6-8) is connected with the grounding electrode (1-2), and the end of the insulating porous air channel (1-7) is separated from a gas passage through a gas-electric separation channel (6-9) of a three-way pipe structure.

Images