CN219478187U - Plasma tube - Google Patents

Abstract

The application provides a plasma tube, including body, interior utmost point post, outer polar network, separation piece and end cover. The inner pole is arranged in the pipe body along the central axis of the pipe body, one end of the inner pole extends out of the pipe body, the outer pole net is arranged on the outer side wall of the pipe body, one side of the blocking piece is fixedly connected with the pipe body, the other side of the blocking piece forms a sealing area, one end of the inner pole, which is positioned outside the pipe body, extends into the sealing area, and the end cover covers the other side of the blocking piece to enable the sealing area to be isolated from outside air. The plasma tube can increase the creepage distance of the two electrodes by arranging the blocking piece, thereby effectively reducing the probability of short circuit of the two electrodes and improving the safe usability and ionization efficiency of the plasma tube; through setting up the sealing area and the end cover of separation spare can be with the one end that interior utmost point post is located outside the body and outside air isolation, improve the antipollution ability of plasma tube, and avoid interior utmost point post and outer utmost point net to discharge and then burn the phenomenon of plasma tube spare part through the impurity in the air.

Description

Plasma tube

Technical Field

The application relates to the technical field of plasma generating devices, in particular to a plasma tube.

Background

The low-temperature plasma tube can efficiently generate a large amount of positive and negative ions and ozone, and is applied to the fields of disinfection, sterilization or plasma to decompose organic waste gas and the like. The main discharge modes for generating low-temperature plasma are corona discharge and dielectric barrier discharge under normal pressure, and compared with the corona discharge, the dielectric barrier discharge is more uniform and stable, the energy utilization rate is higher, and the application is wider in the aspect of purifying gas pollutants. Compared with a conventional plasma tube for blocking discharge through a dielectric medium, the plasma tube is generally provided with an inner polar column and an outer polar net, wherein the inner polar column and the outer polar net are respectively connected with a positive power supply and a negative power supply, and the insulating tube body is used as a blocking medium in the middle of a discharge gap for high-voltage discharge.

In carrying out the present application, the inventors have found that the prior art has at least the following problems: the inner pole and the outer pole net of the plasma tube are usually exposed in the air and are fixed on the plasma tube bracket in a screw connection mode, and the distance between the end face of the inner pole and the outer pole net is relatively short-circuited easily in the mode; meanwhile, a plurality of impurities exist in the air, so that the reliability of two-stage insulation is reduced, and the abnormal phenomenon that the inner polar column and the outer polar net are not discharged through quartz glass media, but are conducted through air impurities to burn the parts of the plasma tube, so that the electric efficiency is influenced, and even potential safety hazards are caused.

Therefore, how to increase the creepage distance between the outer polar net and the inner polar post, isolate the impurities in the air and facilitate convenient assembly is a technical problem that needs to be solved at present by the person skilled in the art.

Disclosure of Invention

For solving the technical problem existing in the prior art, the application provides a plasma tube with increased two-stage creepage distance and strong anti-pollution capability.

In order to achieve the above purpose, the technical solution of the embodiments of the present application is implemented as follows:

the embodiment of the application provides a plasma tube, including body, interior utmost point post and outer polar network, the both ends of body are sealed through the plastic part, interior utmost point post is followed the central axis of body is located in the body and one end passes the plastic part extends to outside the body, outer polar network locates the lateral wall of body, plasma tube still includes barrier piece and end cover, one side of barrier piece with body fixed connection, the opposite side forms a sealing area, interior utmost point post is located the one end outside the body extends to in the sealing area, the end cover shroud in the opposite side of barrier piece makes sealing area and outside air isolation.

In one embodiment, the blocking member comprises a central plate, a first frame-shaped plate arranged on one side of the central plate, and a second frame-shaped plate arranged on the other side of the central plate, wherein the first frame-shaped plate is fixedly connected with the end part of the pipe body, the second frame-shaped plate encloses to form the sealing area, and a through hole for the inner pole to pass through is formed in the central plate.

In one embodiment, the edge profile of the center plate extends radially outward of the tube and projects beyond the outer sidewall of the tube.

In one embodiment, the end of the inner post outside the tube is fixedly connected to the center plate by a threaded fastener.

In one embodiment, a connecting groove matched with the shape of the second frame-shaped plate is formed in one side of the end cover, and the second frame-shaped plate is inserted into the connecting groove.

In one embodiment, the end cover is fixedly connected with the second frame-shaped plate through electronic glue; and/or the end cover is fixedly connected with the second frame-shaped plate through a threaded fastener; and/or the end cover is fixedly connected with the second frame-shaped plate through an elastic fastener.

In one embodiment, the center panel, the first frame panel, and the second frame panel are an integrally formed structure; or the center plate, the first frame-shaped plate, the second frame-shaped plate and the plastic part are of an integrated structure.

In one embodiment, the pipe further comprises a left bracket and a right bracket, one end of the pipe body is erected on the left bracket, and the other end of the pipe body is erected on the right bracket through the blocking piece.

In one embodiment, the blocking piece is fixedly connected with the right bracket through a threaded fastener; or, the separation piece and the right bracket are of an integrated structure.

The plasma tube has the following beneficial effects: the plasma tube is convenient to assemble and maintain; the blocking piece can play a certain role in blocking one end of the inner pole column positioned outside the tube body and the outer pole net on the outer side wall of the tube body, so that the creepage distance of the two electrodes is increased, the probability of short circuit of the two electrodes is effectively reduced, and the safe usability and ionization efficiency of the plasma tube are improved; through setting up the sealing area and the end cover of separation spare can be with the one end that interior utmost point post is located outside the body and outside air isolation, improve the antipollution ability of plasma tube, and avoid interior utmost point post and outer utmost point net to discharge through the impurity in the air and then burn the phenomenon of plasma tube spare part, and then improve the life of plasma tube.

Drawings

FIG. 1 is a split block diagram of a plasma tube according to an embodiment of the present application;

FIG. 2 is a front cross-sectional view of the plasma tube of FIG. 1;

FIG. 3 is a right side view of the plasma tube of FIG. 1;

FIG. 4 is a perspective view of a baffle of the plasma tube of FIG. 1;

FIG. 5 is a perspective view of an end cap of the plasma tube of FIG. 1;

FIG. 6 is a split block diagram of a plasma tube according to another embodiment of the present application;

FIG. 7 is a cross-sectional view of the plasma tube of FIG. 6;

FIG. 8 is a perspective view of an end cap of the plasma tube of FIG. 6;

FIG. 9 is a split block diagram of a plasma tube according to yet another embodiment of the present application;

FIG. 10 is a cross-sectional view of the plasma tube of FIG. 9;

fig. 11 is a perspective view of an end cap of the plasma tube of fig. 9.

The reference numerals of the elements in the drawings are as follows: a tube body 10; a plastic part 11; an inner post 20; a support frame 21; an outer polar net 30; a barrier member 40; a center plate 41; a first frame plate 42; a second frame-shaped plate 43; a button 431; an end cap 50; a connection groove 51; a snap member 52; a left bracket 60; a fixing plate 61; a right bracket 70.

Detailed Description

The technical scheme of the application is further elaborated below by referring to the drawings in the specification and the specific embodiments.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The embodiment of the application provides a plasma tube which can be applied to a plasma air purification device, and low-temperature plasma is obtained through high-voltage discharge so as to oxidize harmful gas pollutants into other harmless substances or low poisons. Referring to fig. 1 and 2, the plasma tube includes a tube body 10, an inner pole 20 and an outer pole net 30. The tube body 10 may be a circular tube structure, and may be made of quartz glass, ceramic, corundum, etc., and is preferably made of quartz glass as a medium in the middle of the discharge gap, so that the discharge can be ensured to be performed stably at a lower voltage, and both ends of the tube body 10 may be sealed by plastic members 11. The inner pole 20 is arranged in the pipe body 10 along the central axis of the pipe body 10, one end of the inner pole 20 penetrates through the plastic part 11 to extend out of the pipe body 10, the inner pole 20 is preferably of a round rod-shaped structure, the material of the inner pole 20 can be copper, nickel, graphite and other materials with strong conductive performance, a certain preset gap is reserved between the inner pole 20 and the inner side wall of the pipe body 10, so that the condition that discharge breakdown does not occur is guaranteed, and the inner pole 20 is arranged along the central axis of the pipe body 10, so that the minimum distance from the surface of the inner pole 20 to the inner side wall of the pipe body 10 is consistent, and uniform discharge is guaranteed. The inner pole 20 is located at one end or the middle part in the pipe body 10 and can be supported and fixed by a supporting frame 21 made of an insulating material, so that the deformation of the inner pole 20 is avoided, the discharge uniformity or the working stability is further affected, and the inner pole 20 is located at one end outside the pipe body 10 and is used for being connected with a positive electrode of a power supply, for example, the inner pole 20 is connected with the positive electrode of the power supply through a wire. The external electrode net 30 is arranged on the outer side wall of the tube body 10, and the external electrode net 30 is preferably a fine net made of metal materials such as copper, silver and the like, and can be arranged on the outer side wall of the tube body 10 in a winding, wrapping and other modes to ensure that the discharge normally occurs. When the plasma tube works, the inner pole 20 is connected with the anode of the external high-voltage power supply, the outer pole net 30 is connected with the cathode of the high-voltage power supply, and low-temperature plasma is generated between the gap between the inner pole 20 and the tube body 10 through dielectric barrier discharge.

The plasma tube according to the embodiment of the present application further includes a blocking member 40 and an end cap 50, wherein one side of the blocking member 40 is fixedly connected with the tube body 10, the other side forms a sealing area, one end of the inner pole 20 located outside the tube body 10 extends into the sealing area, and the end cap 50 covers the other side of the blocking member 40 to isolate the sealing area from the external air. Thus, by arranging the blocking piece 40, a certain blocking effect can be achieved on one end of the inner pole 20 positioned outside the tube body 10 and the outer pole net 30 on the outer side wall of the tube body 10, and the creepage distance of the two electrodes is increased, so that the probability of short circuit of the two electrodes is effectively reduced, and the safe usability and ionization efficiency of the plasma tube are improved; by providing the sealing area and the blocking member 40, the end of the inner pole 20 located outside the tube body 10 can be isolated from the external air, so that the phenomenon that the inner pole 20 and the outer pole net 30 are discharged through impurities in the air to burn the plasma tube parts, such as the plastic part 11, is avoided.

In particular, referring to fig. 2 and 4, the barrier 40 may include a center panel 41, a first frame panel 42, and a second frame panel 43. The central plate 41 is in a flat plate structure, the first frame-shaped plate 42 is disposed on one side of the central plate 41, the first frame-shaped plate 42 may be in a frame-shaped structure adapted to the end shape of the tube 10, and the blocking member 40 is fixedly connected to the tube 10 by sleeving the first frame-shaped plate 42 on the end of the tube 10, and the fixing manner may be, for example, bonding, screw connection, etc., which is not limited herein. The second frame-shaped plate 43 is disposed on the other side of the central plate 41, and the second frame-shaped plate 43 has a frame-shaped structure, which may be annular, rectangular, etc., and the second frame-shaped plate 43 of the frame-shaped structure encloses the sealing area. The central plate 41 is provided with a through hole through which the inner pole 20 can pass, and one end of the inner pole 20 positioned outside the pipe body 10 can extend from the through hole on the central plate 41 to the sealing area, and the blocking piece 40 is fixedly connected with the second frame-shaped plate 43 so as to isolate the sealing area from the outside. Preferably, the central plate 41, the first frame-shaped plate 42 and the second frame-shaped plate 43 can be integrally formed, and the material is preferably polytetrafluoroethylene, polyamide and other materials with good insulating performance, light weight, high structural strength and stable performance, and is convenient to process, manufacture and assemble.

In practical use, a plurality of plasma tubes may be used in parallel to form a multi-tube parallel plasma purification device, and correspondingly, each plasma tube may be used in combination with a barrier 40 and an end cap 50; alternatively, the central plate 41 may be configured as a larger plate, and the first frame-shaped plate 42 and the second frame-shaped plate 43 are provided in plurality and are disposed on two opposite sides of the central plate 41, each plasma tube is disposed corresponding to a first frame-shaped plate 42 and a second frame-shaped plate 43, and each second frame-shaped plate 43 is disposed corresponding to an end cap 50; alternatively, a plurality of first frame-shaped plates 42 are provided, each plasma tube is provided corresponding to one first frame-shaped plate 42, one second frame-shaped plate 43 is provided, and the ends of a plurality of inner poles 20 are sealed in the same sealing area.

Further, the edge profile of the center plate 41 extends radially outward of the tube body 10 and protrudes beyond the outer side wall of the tube body 10, i.e., the edge profile of the center plate 41 is larger than the cross-sectional shape of the tube body 10 when the center plate 41 is fitted to the end face of the tube body 10. It will be appreciated that the creepage distance is the shortest distance between two adjacent conductors or between one conductor and the surface of an adjacent motor casing measured along the insulating surface, and by setting the shape of the central plate 41, the creepage distance between the two electrodes can be effectively increased, the safe usability of the plasma tube is improved, and the higher the edge of the central plate 41 protrudes out of the outer side wall of the tube body 10, the larger the creepage distance between the two electrodes.

For better fixation of the inner pole 20, in the embodiment shown, the end of the inner pole 20 outside the tube body 10 may be provided with threads, so that the end of the inner pole 20 outside the tube body 10 is firmly connected to the center plate 41 by screwing a threaded fastener, such as a nut, onto the threads of the end of the inner pole 20. So, fix the both ends of interior utmost point post 20 respectively through support frame 21 and screw fastener, strengthen the overall stability of interior utmost point post 20, avoid interior utmost point post 20 to produce and rock and make the distance of interior utmost point post 20 and body 10 inside wall change and then influence the homogeneity of discharging.

In order to increase the tightness of the sealing area, referring to fig. 5, one side of the end cap 50 is provided with a connecting groove 51 adapted to the shape of the second frame-shaped plate 43, and the second frame-shaped plate 43 is inserted into the connecting groove 51. In this way, impurities, water vapor and the like in the outside air are not easy to enter the sealing area through the gap between the end cover 50 and the second frame-shaped plate 43, and the sealing performance of the sealing area is enhanced.

Referring to fig. 2, 3 and 5, in one embodiment, the end cap 50 and the second frame plate 43 may be connected by an electronic seal. Specifically, in the assembly process, the second frame-shaped plate 43 is adhered and fixed in the connecting groove 51 by gluing in the connecting groove 51 and inserting the second frame-shaped plate 43 into the connecting groove 51, so as to achieve the sealing purpose of the sealing area.

Referring to fig. 6-8, in another embodiment, the end cap 50 and the second frame plate 43 may be sealingly connected by a threaded fastener. Specifically, the end cover 50 may be a plate structure with a shape matching with the second frame-shaped plate 43 or a larger area than the second frame-shaped plate 43, and the end face of the second frame-shaped plate 43 and the end cover 50 are respectively provided with threaded holes, and the screws sequentially pass through the threaded holes on the second frame-shaped plate 43 of the end cover 50 to enable the end cover 50 to be attached to the second frame-shaped plate 43, so that the sealing purpose of the sealing area is achieved.

Referring to fig. 9 to 11, in yet another embodiment, the end cap 50 and the second frame plate 43 may be connected by a snap 52 in a sealing manner. Specifically, one side of the end cover 50 is provided with a plurality of elastic fasteners 52, the outer side wall of the second frame-shaped plate 43 is convexly provided with a plurality of buckling positions 431, and the end cover 50 is attached and fixed with the second frame-shaped plate 43 by clamping and connecting the elastic fasteners 52 with the corresponding buckling positions 431, so that the sealing purpose of the sealing area is achieved. In this embodiment, the center plate 41, the first frame plate 42, the second frame plate 43 and the plastic member 11 are integrally formed, i.e. the whole of the blocking member 40 is directly used for sealing the end of the tube body 10, which is beneficial for assembling and installing the blocking member 40 and the tube body 10.

In the connection between the end cap 50 and the second frame plate 43, the bonding, screw connection, snap connection, and the like in the above embodiment may be combined and used. For example, an electronic paste is applied on the basis of the provision of the elastic member 52 to enhance the sealing property of the sealing region.

In order to facilitate the fixation and arrangement of the plasma tube, the plasma tube further comprises a left bracket 60 and a right bracket 70, and the left bracket 60 and the right bracket 70 are made of materials with good insulating properties such as polytetrafluoroethylene, polyamide and the like. In the illustrated embodiment, the inner pole 20 extends from the right end of the tube 10 to the outside of the tube 10, and the blocking member 40 and the end cap 50 are disposed at the right end of the tube 10. The left end of the tube body 10 may be mounted on the left bracket 60 by a fixing plate 61, and the right end of the tube body 10 may be mounted on the right bracket 70 by the blocking member 40. Preferably, the center plate 41 and the right bracket 70 may be fixedly connected by a threaded fastener, such as a bolt, and the center plate 41 and the right bracket 70 may be integrally formed, so that the creepage distance between the two electrodes can be further increased, and the installation and the assembly are facilitated.

In summary, the plasma tube according to the embodiment of the present application has the barrier member 40 and the end cap 50 added on the existing plasma tube structure, so that the assembly and maintenance are convenient; by designing the structure of the blocking piece 40, a certain blocking effect can be achieved on one end of the inner pole 20 positioned outside the tube body 10 and the outer pole net 30 on the outer side wall of the tube body 10, the creepage distance of the two electrodes is increased, so that the probability of short circuit of the two electrodes is effectively reduced, and the safe usability and ionization efficiency of the plasma tube are improved; by arranging the sealing area and the end cover 50, one end of the inner polar column 20, which is positioned outside the pipe body 10, can be isolated from external air, so that the anti-pollution capability of the plasma pipe is improved, and the phenomenon that the inner polar column 20 and the outer polar net 30 are discharged through impurities in the air to burn parts of the plasma pipe is avoided.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (9)

1. The utility model provides a plasma tube, includes body, interior utmost point post and outer polar network, the both ends of body are sealed through the plastic spare, interior utmost point post is followed the central axis of body is located in the body and one end passes the plastic spare extends to outside the body, outer polar network locates the lateral wall of body, a serial communication port, plasma tube still includes barrier component and end cover, one side of barrier component with body fixed connection, the opposite side forms a sealing area, interior utmost point post is located one end outside the body extends to in the sealing area, the end cover in the opposite side of barrier component makes sealing area and outside air isolation.

2. The plasma tube of claim 1, wherein the barrier comprises a central plate, a first frame-shaped plate arranged on one side of the central plate, and a second frame-shaped plate arranged on the other side of the central plate, the first frame-shaped plate is fixedly connected with the end of the tube body, the second frame-shaped plate encloses the sealing area, and a through hole through which the inner pole can pass is formed in the central plate.

3. The plasma tube of claim 2, wherein an edge profile of the center plate extends radially outward of the tube body and projects beyond an outer sidewall of the tube body.

4. The plasma tube of claim 2, wherein an end of the inner post outside the tube body is fixedly connected to the central plate by a threaded fastener.

5. The plasma tube according to claim 2, wherein a connecting groove adapted to the shape of the second frame-shaped plate is provided on one side of the end cap, and the second frame-shaped plate is inserted into the connecting groove.

6. The plasma tube of claim 5, wherein the end cap is fixedly connected to the second frame plate by an electronic gel; and/or the end cover is fixedly connected with the second frame-shaped plate through a threaded fastener; and/or the end cover is fixedly connected with the second frame-shaped plate through an elastic fastener.

7. The plasma tube of claim 2, wherein the central panel, the first frame panel, and the second frame panel are an integrally formed structure; or the center plate, the first frame-shaped plate, the second frame-shaped plate and the plastic part are of an integrated structure.

8. The plasma tube of any of claims 1 to 7, further comprising a left bracket and a right bracket, wherein one end of the tube body is mounted on the left bracket, and the other end is mounted on the right bracket through the barrier member.

9. The plasma tube of claim 8, wherein the barrier is fixedly connected to the right bracket by a threaded fastener; or, the separation piece and the right bracket are of an integrated structure.