A gas-electric integrated plug-in device for a torch

Abstract

The application discloses a gas and electricity integrated plug-in device for a torch, in the first plug-in part, the lower gas pipeline is arranged in the center of the base core, the female electric contact in the lower insulator is located outside the lower gas pipeline, in the second plug-in part, the upper gas pipeline is fixed in the center of the torch shell, the male electric contact is assembled in the upper insulator located outside the upper gas pipeline. When the first plug-in part and the second plug-in part are plugged in, the base locks the torch shell, the upper gas pipeline and the lower gas pipeline are communicated, and the male electric contact and the female electric contact are connected. The application forms a gas path located in the center of the device and an electric circuit located in the periphery of the gas path, has the advantages of high integration, miniaturization, quick plug-in, high safety and the like, and has a wide application prospect in the field of plug-in devices.

Description

TECHNICAL FIELD

[0001] The application relates to a gas and electricity integrated quick plug device for a torch, and belongs to the technical field of plug-in devices, connectors and sealing joints. BACKGROUND

[0002] The plug or connector is widely used in many fields. The existing plug-in device can be roughly divided into the following three types: the first type is a non-integrated plug-in device containing only a fluid plug or a single electric plug. The plug is a traditional functional plug and can only be used for power supply or only for passing fluid, and cannot meet the working scene demand of simultaneously passing power or fluid. The second type is a simple integration of fluid and circuit plug-in devices. The fluid side mainly uses a water connector, and no gas connector is seen. The connector of the circuit does not have high-voltage electricity and signal connectors, and no separate plug-in feedback is provided. Whether the power is on is used to determine whether the plug-in is in place. This type of device is only a simple superposition of two plugs without any technical modification. The structure is simple, the volume is large, and there is no any technical integration or innovation. It does not support the simultaneous passing of high-voltage electricity, signals, combustible gas and other complex media, and cannot meet the miniaturization plug-in structure demand under the size of the hand-held torch. The third type contains gas and circuit devices, but the assembly is complex, such as CN2213604Y, which cannot realize quick plug-in. This type of device does not belong to the category of plug-in devices at all, and cannot be used to realize the plug-in function. It also fails to provide any technical content related to the key technology of the plug-in device.

[0003] In summary, there is no miniaturized quick and reliable plug-in device with high integration of gas and high-voltage electricity, independent feedback signal and size smaller than the hand-held torch hand-holding position in the prior art. At the same time, in the application environment of the plug-in device, the application of the plug-in device in low-temperature and humid environment is rarely mentioned. At present, the plug-in device is applied to the hand-held torch relay display and fixed position display. It is necessary to set a set of plug-in device at the lower end of the hand-held torch to enable the torch to communicate with the external system through plug-in, and to supply fuel, high-voltage electricity and signal transmission. Therefore, it is urgent to prepare a highly integrated quick plug-in device. SUMMARY

[0004] The purpose of the present application is to overcome the above-mentioned defects, and to provide a gas and electricity integrated plug-in device for a torch, which solves the problems of low integration, large size, inconvenient plug-in and poor safety of the plug-in device in the prior art. The plug-in device realizes high electrical integration and miniaturization, and improves the plug-in smoothness, reliability and safety.

[0005] To achieve the above-mentioned purpose of the application, the application provides the following technical scheme:

[0006] A gas and electricity integrated plug-in device for a torch, comprising a first plug-in part and a second plug-in part.

[0007] The first plug-in part comprises a base, a base core, a lower insulator, a lower gas pipeline, a first cable and a female electric contact for ignition;

[0008] The base core is fixedly installed on the base, and the base core is provided with a lower gas cavity and a lower circuit cavity. The lower gas cavity is located at the center of the base core, and the lower circuit cavity is located outside the lower gas cavity;

[0009] The lower insulator is arranged outside the lower gas cavity, and the female electric contact for ignition is assembled in the lower insulator. The first cable connected with the tail part of the female electric contact for ignition passes through the lower circuit cavity and is connected with an external ignition control system;

[0010] The lower gas pipeline is arranged in the lower gas cavity, and the lower gas pipeline is connected with an external gas source;

[0011] The second plug-in part comprises an upper gas pipeline, a male electric contact for ignition, a second cable and an upper insulator;

[0012] The upper gas pipeline is fixed at the center of the torch shell, and the upper gas pipeline is connected with a torch ignition mechanism;

[0013] The upper insulator is arranged outside the upper gas pipeline, and the male electric contact for ignition is assembled in the upper insulator. The second cable connected with the tail part of the male electric contact for ignition is connected with the torch ignition mechanism;

[0014] When the first plug-in part and the second plug-in part are plugged in, the base locks the torch shell, the upper gas pipeline and the lower gas pipeline are communicated, and the male electric contact for ignition and the female electric contact for ignition are connected.

[0015] Further, the gas-electric integrated plug-in device for the torch further comprises a plug-in feedback mechanism;

[0016] The plug-in feedback mechanism comprises two female electric contacts for feedback, two male electric contacts for feedback and a power-on sensing circuit;

[0017] The female electric contacts for feedback are assembled in the lower insulator, and the first cable connected with the tail part of the female electric contacts for feedback passes through the lower circuit cavity and is connected with the power-on sensing circuit;

[0018] The male electric contacts for feedback are assembled in the upper insulator, and the two second cables connected with the tail part of the two male electric contacts for feedback are short-circuited;

[0019] When the first plug-in part and the second plug-in part are plugged in, the female electric contacts for feedback and the male electric contacts for feedback are connected, the power-on sensing circuit judges whether the first plug-in part and the second plug-in part are plugged in, sends a plug-in signal to the external ignition control system when the plug-in is in place, and the external ignition control system outputs an ignition signal to the female electric contact for ignition according to the plug-in signal;

[0020] The number of lower circuit cavities is equal to the total number of feedback female electric contacts and ignition female electric contacts, and each lower circuit cavity is independent of each other.

[0021] Further, the gas-electric integrated plug-in device for torches includes a base, a first seat body, a second seat body arranged on the first seat body, and a locking device.

[0022] The torch shell is provided with a locking hole.

[0023] The second seat body is a cylindrical structure, and the base core is located in the second seat body and fixedly connected with the first seat body; an interval for accommodating the torch shell is arranged between the inner wall of the second seat body and the outer wall of the base core.

[0024] The side wall of the second seat body is provided with an outward protrusion, and the protrusion is provided with a pin hole penetrating through the side wall; the direction of the pin hole is perpendicular to the axis of the second seat body.

[0025] The locking device includes an outer nut, a spring, and a pin shaft; the spring is sleeved on the outer portion of the pin shaft, the first end of the pin shaft is inserted into the pin hole, the second end is fixedly connected with the outer nut, and the outer nut is screwed with the outer surface of the protrusion.

[0026] The first end face of the pin shaft is a bevel surface; when the first plug-in part and the second plug-in part are plugged in, the torch shell enters the interval between the inner wall of the second seat body and the outer wall of the base core and contacts the bevel surface, pushes the pin shaft outward and compresses the spring, until the locking hole arranged on the torch shell is aligned with the pin shaft, and the pin shaft enters the positioning hole under the action of the spring to realize the locking of the base to the torch shell.

[0027] Further, in the gas-electric integrated plug-in device for torches, the lower end of the lower gas pipeline is screwed with the inner wall of the lower gas cavity, and the upper end of the upper gas pipeline is screwed with the torch shell; when the first plug-in part and the second plug-in part are plugged in, the upper end of the lower gas pipeline and the lower end of the upper gas pipeline are plugged in, the outer wall of the upper end of the lower gas pipeline cooperates with the inner wall of the lower end of the upper gas pipeline, and the cooperation position is sealed by using ≥3 O-rings.

[0028] The surface of the O-ring and the inner wall of the upper gas pipeline are coated with lubricating grease, and the similar viscosity of the lubricating grease at the use temperature is ≤700 Pa.s.

[0029] The upper end of the lower gas cavity is a trumpet mouth with large upper end and small lower end.

[0030] Further, in the gas-electric integrated plug-in device for torches, the lower insulator is a cylindrical structure arranged on the outer side of the lower gas cavity, and the inner wall of the lower insulator contacts the outer wall of the lower gas cavity; the ignition male electric contact and the feedback male electric contact are collectively referred to as a male electric contact, and the ignition female electric contact and the feedback female electric contact are collectively referred to as a female electric contact.

[0031] The female electric contact is assembled between the inner wall and the outer wall of the lower insulator.

[0032] The upper insulator is a cylindrical structure arranged outside the upper gas pipeline, and the male electrical contact is assembled between the inner wall and the outer wall of the upper insulator;

[0033] The lower electrical circuit cavities are uniformly distributed outside the lower gas cavity in the circumferential direction, and the female electrical contacts are uniformly distributed outside the lower gas cavity.

[0034] Further, in the gas-electric integrated plug-in device for the torch, the female electrical contact and the male electrical contact are respectively fixed in the lower insulator and the upper insulator by a pressure assembly method;

[0035] The head of the female electrical contact is lower than the upper end of the lower insulator, the lower insulator is provided with a contraction groove extending to the upper end of the lower insulator, and the female electrical contact is installed in position by the contraction groove; and the head of the male electrical contact protrudes out of the upper insulator.

[0036] When the first plug-in part and the second plug-in part are plugged in, the upper end of the lower insulator and the lower end of the upper insulator are matched, and the head of the female electrical contact and the head of the male electrical contact are connected; the outer wall of the lower insulator is provided with a chamfer at the upper end, and the outer wall of the upper insulator is provided with a boss matching the chamfer at the lower end.

[0037] Further, in the gas-electric integrated plug-in device for the torch, the upper end of the inner wall of the lower insulator is higher than the upper end of the lower gas cavity, and the upper end of the lower gas pipeline is lower than the upper end of the lower gas cavity.

[0038] The inner wall of the lower insulator is provided with a ring-shaped boss at the upper end, and the inner wall of the upper insulator is provided with a ring-shaped groove matching the ring-shaped boss at the lower end.

[0039] Further, in the gas-electric integrated plug-in device for the torch, the outer diameter of the lower insulator is equal to the maximum outer diameter of the base core; the outer wall surface of the lower insulator and the outer wall surface of the base core form a continuous cylindrical wall surface.

[0040] The cylindrical wall surface is provided with a limiting groove in the axial direction, and the inner wall of the torch shell is provided with a limiting protrusion in the axial direction; when the first plug-in part and the second plug-in part are plugged in, the limiting groove and the limiting protrusion are matched to limit the circumferential direction.

[0041] Further, in the gas-electric integrated plug-in device for the torch, the torch shell is provided with a cable passing hole, one end of the second cable is connected with the tail of the male electrical contact, and the other end of the second cable passes through the cable passing hole and is connected with the torch ignition mechanism.

[0042] The second cable and the cable passing hole are filled with insulating glue for sealing.

[0043] Further, in the gas-electric integrated plug-in device for the torch, the lower insulator and the upper insulator are respectively provided with a lower insulator groove and an upper insulator groove.

[0044] The connection of the female contact with the first cable is located in the lower insulator groove, the connection of the male contact with the second cable is located in the upper insulator groove, and the lower insulator groove and the upper insulator groove are filled with insulating glue.

[0045] Compared with the prior art, the present application has at least one of the following advantages:

[0046] (1) The gas-electric integrated plug-in device for the torch can meet the requirements of high integration, miniaturization and gas-electric integrated quick plug-in when the plug-in device is placed at the bottom of the torch.

[0047] (2) The plug-in device is designed with a locking device to ensure quick plug-in and reliable locking.

[0048] (3) The plug-in feedback mechanism is designed to realize direct feedback of plug-in in place in a simple way, reduce the judgment link, and reduce the probability of failure in the implementation process, with the characteristics of simplicity, efficiency and high reliability.

[0049] (4) The present application has good guiding effect, and the formed plug-in device can make the athlete complete smooth plug-in through simple steps without using vision.

[0050] (5) The present application has good sealing and smooth plug-in, through the overall structure design and the use of insulating glue, it can safely and reliably seal the gas, and can smoothly complete the plug-in.

[0051] (6) The present application has reliable dielectric effect, and there is no creepage phenomenon between the circuits in the plug-in device and between the circuit and the metal, which has good safety. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 It is a preferred embodiment of the plug-in device of the present application;

[0053] Figure 2 It is a preferred embodiment of the plug-in device of the present application;

[0054] Figure 3 It is a preferred embodiment of the plug-in device of the present application;

[0055] Figure 4 It is a preferred embodiment of the plug-in device of the present application;

[0056] Figure 5 It is a preferred embodiment of the plug-in device of the present application;

[0057] Figure 6 It is a preferred embodiment of the plug-in device of the present application;

[0058] Figure 7 Figure 1 is a perspective view of the upper part of the plug-in device according to a preferred embodiment of the present application;

[0059] Figure 8 Figure 2 is a schematic view of the locking device according to a preferred embodiment of the present application;

[0060] Figure 9 Figure 3 is a schematic view of the feedback mechanism according to a preferred embodiment of the present application;

[0061] In the figure, 101 is the torch housing, 102 is the cable slot, 103 is the limiting protrusion, 104 is the locking hole, 111 is the upper insulator, 112 is the male electrical contact, 113 is the second cable, 114 is the upper insulator slot, 121 is the upper gas pipe, 1111 is the boss, 1112 is the annular groove, 1211 is the lower part of the upper gas pipe;

[0062] 201 is the base, 202 is the base core, 203 is the screw, 211 is the lower insulator, 212 is the female electrical contact, 213 is the first cable, 214 is the lower insulator slot, 221 is the lower gas pipe, 122, 222 are O-rings, 230 is the locking device, 231 is the outer nut, 232 is the spring, 233 is the pin shaft, 240 is the limiting groove, 2021 is the upper opening of the base core, 2111 is the contraction slot, 2112 is the annular boss, 2211 is the upper part of the lower gas pipe, 2331 is the inclined surface. DETAILED DESCRIPTION

[0063] The features and advantages of the present application will become more apparent from the detailed description in conjunction with the accompanying drawings.

[0064] The term "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations. Although various aspects of an implementation can be described herein as being a preferred implementation or as an implementation "for" or "for use in" a particular application, this is used merely for illustrative purposes and is not intended to be limiting.

[0065] The present application provides a highly integrated, high-pressure electrical and gas integrated plug-in device with independent feedback for a torch, comprising a first plug-in part and a second plug-in part, the first plug-in part being the lower part of the plug-in device, and the second plug-in part being the upper part of the plug-in device, wherein the upper part of the plug-in device is combined with the torch housing 101 as part of the torch, and the torch is ignited after the upper part of the plug-in device is plugged into the lower part of the plug-in device.

[0066] The technical solutions of the present application will be described in detail below. Figures 1-9 The technical solutions of the present application will be described in detail below.

[0067] In a preferred embodiment, as shown inFigure 1 The upper and lower parts of the connector each contain an integrated component, such as... Figure 4 Gas circuit and such Figure 5 The circuit consists of two parts: a single-channel gas supply located at the center of the device for gas flow, through which external gas sequentially enters the flare ignition mechanism via the base core 202, lower gas pipe 221, and upper gas pipe 121; the connection points of the lower and upper gas pipes 221 are sealed with three O-rings 222. The multi-channel circuit, located around the gas supply channel, transmits electrical signals from external ignition control systems such as high-voltage circuits or connection feedback signals. It mainly consists of the base core 202, lower insulator 211, and female electrical contact 212. The system consists of a first cable 213, a second cable 113, an upper insulator 111, and a male electrical contact 112. The female electrical contact 212 includes two types: an ignition female electrical contact and a feedback female electrical contact. The male electrical contact 112 includes two types: an ignition male electrical contact and a feedback male electrical contact. The difference between the two types of female electrical contacts and the two types of male electrical contacts is only that the devices connected by the cables are different. The ignition female electrical contact is connected to an external ignition control system, the feedback female electrical contact is connected to an energized induction circuit, the ignition male electrical contact is connected to a torch ignition mechanism, and the feedback male electrical contact is short-circuited.

[0068] The male electrical contact 112 and the female electrical contact 212 are assembled into the holes of the upper insulator 111 and the lower insulator 211 respectively by pressure assembly method. The tail of the electrical contact is connected to the cable. The connection port between the tail of the contact and the cable is located in the upper insulator groove 114 and the lower insulator groove 214 respectively. The groove is filled with insulating glue.

[0069] To prevent high-voltage creepage between electrical contacts, the end of the female electrical contact 212 is recessed into the lower insulator 211, forming a contraction groove 2111. The contraction groove 2111 extends from the end of the female electrical contact to the upper end of the lower insulator 211. The outer wall of the contraction groove 2111 has a chamfer. Correspondingly, at the connection point between the upper insulator 111 and the male electrical contact 112, a boss 1111 is provided. The lower end of the boss 1111 has a shape complementary to the chamfer on the outer wall of the contraction groove 2111. When not inserted, the contraction groove 2111 effectively extends the creepage distance between the female electrical contacts 212, preventing creepage. After insertion, the boss 1111 and the chamfer on the outer wall of the contraction groove 2111 of the lower insulator engage, with the mating surface being an inclined plane, which can cut off the creepage lines between the male electrical contacts 112.

[0070] To prevent creepage between the electrical contact insertion point and the gas pipeline, a circumferential boss 2112 is provided on the lower insulator 211, and a circumferential groove 1112 is provided on the upper insulator. The base core 202 and the lower gas pipe 221 are both retracted inside the lower insulator 211. When not inserted, the circumferential boss 2112 and the retracted base core 202 and lower gas pipe 221 inside the insulator effectively extend the creepage distance and eliminate creepage. After insertion, the mating surface of the circumferential boss 2112 and the circumferential groove 1112 can effectively cut off the creepage line.

[0071] To ensure accurate insertion orientation, the lower part 1211 of the upper gas pipeline, the upper part 2211 of the lower gas pipeline, and the trumpet-shaped upper outlet of the base core 202 together form an axial guide groove, providing axial guidance. An axially oriented limiting protrusion 103 is provided on the inner wall of the torch housing 101. The limiting protrusion 103 and the limiting groove 240 on the lower part of the insertion device together form circumferential positioning. Axial and circumferential positioning support the accuracy of the insertion device's orientation.

[0072] To ensure smooth connection, grease is applied to the surface of O-ring 222 and the inner surface of the upper gas pipe 121. If the connection device is used at low temperatures, low-temperature grease of the corresponding temperature should be applied, and the viscosity of the grease at the operating temperature should be ≤700 Pa·s.

[0073] like Figure 2 and Figure 3 The lower part of the plug-in device includes a base 201, a base core 202, a lower gas pipe 221, a lower insulator 211, a female electrical contact 212, and a first cable 213. The base core 202 is installed at the center of the base 201, limited by a boss, and locked with a screw 203. The lower gas pipe 221 is threadedly connected to the base core 202. The base 201 includes a locking device 230, such as... Figure 8 The locking device 230 includes an outer nut 231, a spring 232, and a pin 233. During insertion, the torch housing 101 moves downward and contacts the inclined surface 2331 at one end of the pin 233, causing the pin 233 to move outward and compressing the spring 232. After insertion, the pin 233, pushed by the spring 232, inserts into the locking hole 104 on the torch housing 101, forming a one-way locking of the torch. By reasonably setting the angle θ between the inclined surface 2331 of the pin and the vertical direction, the weight of the torch acting on the inclined surface 2331 is greater than or equal to the thrust of the spring 232. The insertion can be completed using the weight of the torch itself. The purpose of this design is to reduce the resistance of the torchbearer's insertion action and make the insertion action easy to complete.

[0074] like Figure 6 and Figure 7In the upper part of the plug-in device, the upper gas pipe 121 is connected to the torch housing 101 by threads, and the upper insulator 111 is pressed by the upper gas pipe 121 and the torch housing 101.

[0075] In this invention, a plug-in feedback mechanism is formed by two female electrical contacts 212, two male electrical contacts 112, and an energized sensing circuit, such as... Figure 9 As shown, the two female electrical contacts 212 and the two male electrical contacts 112 are named the feedback female electrical contact and the feedback male electrical contact, respectively. In the insertion feedback mechanism, the two feedback male electrical contacts are connected in series by a short circuit using a cable. The working method of this insertion feedback mechanism is as follows: the energized induction circuit is connected to the two feedback female electrical contacts respectively. When the upper and lower parts of the insertion device complete the insertion action, the series-connected feedback male electrical contacts can form a closed circuit. The energized induction circuit determines that the insertion action is completed and sends an insertion signal to the external ignition control system, thus completing the insertion feedback. After the insertion is completed, the external ignition control system sends a high-voltage electrical signal to the electrical contacts. This insertion feedback mechanism does not use sensors or numerous components. It achieves direct feedback of insertion in the simplest and most ingenious way, reduces the judgment steps, lowers the probability of failure during implementation, and has the characteristics of simplicity, efficiency, and high reliability.

[0076] The torch housing 101 has a cable passage hole. One end of the second cable 113 is connected to the tail of the public contact 112, and the other end passes through the cable passage hole to connect to or short-circuit the torch ignition mechanism. A cable groove 102 is provided above the cable passage hole. Filling the cable passage hole and cable groove 102 in the torch housing 101 with insulating glue can prevent rainwater from entering the plug-in device through the torch, and can also prevent gas from entering the torch cavity through the cable groove 102 if the plug-in device fails to seal. The insulator is made of a high-strength, lightweight insulating plastic material that can be precision machined.

[0077] Except for the lower insulator 211 and the upper insulator 111, all other components of this invention are made of metal.

[0078] This invention features a highly integrated plug-in device that resolves the contradiction between the complex gas and electrical plug-in functional structure and the limited space (its size is smaller than that of a hand). The plug-in device is built into the bottom of the torch, where the internal space is confined. Furthermore, this integrated gas and electrical plug-in device carries multiple functions, a contradiction that can only be resolved through high integration. This invention combines the gas and electrical circuits with the torch shape, utilizing a central gas path and multiple circumferentially distributed electrical circuits to integrate the structure. Simultaneously, the electrical and gas path structures are mutually integrated, forming a highly integrated, miniaturized, and multifunctional plug-in device.

[0079] This invention resolves the contradiction between non-visual insertion and reliable docking. Based on the functional requirements of the device, this insertion device needs to meet the torchbearer's blind insertion requirement, that is, to complete the insertion without the torchbearer's visual input. This invention provides a perfect blind insertion solution by employing a circumferential positioning and axial guiding structure: after the torchbearer completes the insertion using the device, a simple rotation is all that's needed to locate the circumferential positioning groove (limiting groove 240), and then pressing down allows for reliable docking under the guidance of the axial guiding device (i.e., the lower part of the upper gas pipeline 1211, the upper part of the lower gas pipeline 2211, and the outlet 2021 on the flared base core).

[0080] This invention resolves the contradiction between smooth insertion and reliable sealing. Sealing gaseous media differs from sealing liquid media. Gaseous media may experience slight leaks of varying degrees during the sealing process. Within the semi-enclosed space of the insertion device, the accumulation of these slight leaks can cause the gas concentration to reach the lower explosive limit. At this point, even a slight discharge in the circuit could lead to deflagration within the insertion device. This is especially true when the sealed medium is hydrogen, which is highly prone to leakage, raising the requirements for sealing reliability to the highest level. This invention employs a three-O-ring axial sealing method, which can reduce hydrogen leakage to below 1 ppm. However, multiple seals reduce insertion smoothness. This invention uses an axial guiding method to ensure uniform compression of the circumferential O-rings during insertion, and utilizes grease to effectively reduce the friction between the O-ring compression surface and the metal surface, greatly improving insertion smoothness. If the insertion device is used at low temperatures, O-rings that stiffen due to low temperatures will significantly hinder insertion smoothness. Therefore, O-ring materials with good elastic deformation at low temperatures should be used. At the same time, the increased viscosity of grease at low temperatures can also lead to difficulties in insertion. Grease with a lower viscosity at low temperatures should be used.

[0081] This invention resolves the contradiction between miniaturization and high-voltage creepage distance. The plug-in device circuitry in this invention primarily uses high-voltage electricity above 5000kV. Creepage to ground in high-voltage circuits is extremely severe, especially in humid environments where the air dielectric capacity decreases, thus lengthening the dielectric distance. Creepage mainly occurs at the ends of the male and female electrical contacts and cable connections. Cable connections are static structures, using slots to retract the connection point into the insulation, and then sealing the slots with insulating adhesive. Creepage at the ends of the male and female electrical contacts cannot be sealed with insulating adhesive; the only solutions are to lengthen the dielectric distance or cut off the creepage path. Creepage at the ends of the male and female electrical contacts can be categorized into three types: creepage between electrical contacts, creepage between electrical contacts and the metal of the gas path, and creepage between electrical contacts and the flare housing. The specific solution is to retract the insertion point of the male and female electrical contacts into the slot, and simultaneously design a fit between the slot and the end face to cut off the creepage path. The inner and outer rings of the insulation are designed with convex and concave surfaces to effectively extend the dielectric distance. The contradiction between miniaturization and high-voltage creepage distance was effectively resolved through structural and packaging methods.

[0082] The present invention has been described in detail above with reference to specific embodiments and exemplary examples; however, these descriptions should not be construed as limiting the present invention. Those skilled in the art will understand that various equivalent substitutions, modifications, or improvements can be made to the technical solutions and embodiments of the present invention without departing from the spirit and scope of the invention, and all such modifications and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims.

[0083] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A gas-electric integrated plug-in device for a torch, characterized in that, Includes a first connector and a second connector; The first plug-in part includes a base (201), a base core (202), a lower insulator (211), a lower gas pipe (221), a first cable (213), and an ignition female electrical contact; The base core (202) is fixedly installed on the base (201). The base core (202) is provided with a lower gas chamber and a lower circuit chamber. The lower gas chamber is located in the center of the base core (202), and the lower circuit chamber is located outside the lower gas chamber. The lower insulator (211) is located outside the lower gas chamber. The ignition female electrical contact is assembled in the lower insulator (211). The first cable (213) connected to the tail of the ignition female electrical contact passes through the lower circuit chamber and is connected to the external ignition control system. The lower gas pipeline (221) is located in the lower gas chamber and is connected to an external gas source; The second connector includes an upper gas pipe (121), an ignition power contact, a second cable (113), and an upper insulator (111); The upper gas pipeline (121) is fixed to the center of the flare housing (101), and the upper gas pipeline (121) is connected to the flare ignition mechanism; The upper insulator (111) is located outside the upper gas pipeline (121), the ignition power contact is assembled in the upper insulator (111), and the second cable (113) connected to the tail of the ignition power contact is connected to the torch ignition mechanism. When the first and second plug parts are plugged in, the base (201) locks the torch housing (101), the upper gas pipeline (121) and the lower gas pipeline (221) are connected, and the ignition male contact and the ignition female contact are connected. It also includes a plug-in feedback mechanism; The insertion feedback mechanism includes two female feedback contacts, two male feedback contacts, and an energized sensing circuit; The feedback bus contact is assembled in the lower insulator (211), and the first cable (213) connected to the tail of the feedback bus contact passes through the lower circuit cavity and is connected to the energized induction circuit. Feedback public contact is assembled in the upper insulator (111) and short-circuited with the two second cables (113) connected to the tail of the two feedback public contact; When the first and second plug-in parts are plugged in, the feedback female electrical contact and the feedback male electrical contact are connected. The energized sensing circuit determines whether the first and second plug-in parts are plugged in properly. When they are plugged in properly, it sends a plug-in signal to the external ignition control system. The external ignition control system outputs an ignition signal to the ignition female electrical contact according to the plug-in signal. The number of lower circuit cavities is equal to the total number of feedback bus contacts and ignition bus contacts, and each lower circuit cavity is independent of the others.

2. The gas-electric integrated plug-in device for a torch according to claim 1, characterized in that, The base (201) includes a first seat body, a second seat body disposed on the first seat body, and a locking device (230); The torch housing (101) is provided with a locking hole (104); The second seat is a cylindrical structure, with the base core (202) located inside the second seat and fixedly connected to the first seat; a gap is provided between the inner wall of the second seat and the outer wall of the base core (202) to accommodate the torch shell (101); The second body has an outward protrusion on its side wall, and a pin hole that penetrates the side wall is provided in the protrusion; the direction of the pin hole is perpendicular to the axis of the second body. The locking device (230) includes an outer nut (231), a spring (232) and a pin (233); the spring (232) is sleeved on the outside of the pin (233), the first end of the pin (233) is inserted into the pin hole, and the second end is fixedly connected to the outer nut (231), and the outer nut (231) is screwed to the outer surface of the protrusion; The first end face of the pin (233) is a bevel. When the first insertion part and the second insertion part are inserted, the torch housing (101) enters downward into the gap between the inner wall of the second base and the outer wall of the base core (202) and contacts the bevel. The pin (233) is pushed outward and the spring (232) is compressed until the locking hole on the torch housing (101) is aligned with the pin (233). Under the action of the spring (232), the pin (233) enters the positioning hole to lock the base (201) onto the torch housing (101).

3. The gas-electric integrated plug-in device for a torch according to claim 1, characterized in that, The lower end of the lower gas pipe (221) is screwed to the inner wall of the lower gas chamber, and the upper end of the upper gas pipe (121) is screwed to the torch shell (101). When the first and second insertion parts are inserted, the upper end of the lower gas pipe (221) and the lower end of the upper gas pipe (121) are inserted together. The outer wall of the upper end of the lower gas pipe (221) matches the inner wall of the lower end of the upper gas pipe (121), and the matching position is sealed with ≥3 O-rings. The surface of the O-ring and the inner wall of the upper gas pipe (121) are coated with grease, the grease having a similar viscosity of ≤700 Pa·s at the operating temperature; The upper part of the lower gas chamber has a flared opening that is wider at the top and narrower at the bottom.

4. The gas-electric integrated plug-in device for a torch according to claim 1, characterized in that, The lower insulator (211) is a cylindrical structure located outside the lower gas chamber, and the inner wall of the lower insulator (211) is in contact with the outer wall of the lower gas chamber; the ignition male contact and the feedback male contact are collectively referred to as the male contact (112), and the ignition female contact and the feedback female contact are collectively referred to as the female contact (212); The female electrical contact (212) is assembled between the inner wall and the outer wall of the lower insulator (211); The upper insulator (111) is a cylindrical structure located outside the upper gas pipeline (121), and the male electrical contact (112) is assembled between the inner wall and the outer wall of the upper insulator (111). Each lower circuit cavity is evenly distributed circumferentially on the outside of the lower gas cavity, and the mother electrical contacts (212) are evenly distributed on the outside of the lower gas cavity.

5. The gas-electric integrated plug-in device for a torch according to claim 4, characterized in that, The female electrical contact (212) and the male electrical contact (112) are fixed in the lower insulator (211) and the upper insulator (111) respectively by pressure assembly method; The head of the female contact (212) is lower than the upper end of the lower insulator (211); the head of the male contact (112) extends out of the upper insulator (111); When the first and second plug-in parts are plugged in, the upper end of the lower insulator (211) and the lower end of the upper insulator (111) are engaged, and the head of the female contact (212) and the head of the male contact (112) are connected; the upper end of the outer wall of the lower insulator (211) is provided with a chamfer, and the lower end of the outer wall of the upper insulator (111) is provided with a boss (1111) that matches the chamfer.

6. The gas-electric integrated plug-in device for a torch according to claim 5, characterized in that, The upper end of the inner wall of the lower insulator (211) is higher than the upper end of the lower gas chamber, and the upper end of the lower gas pipe (221) is lower than the upper end of the lower gas chamber; The upper end of the inner wall of the lower insulator (211) is provided with a circumferential boss (2112), and the lower end of the inner wall of the upper insulator (111) is provided with a circumferential groove (1112) that matches the circumferential boss (2112).

7. The gas-electric integrated plug-in device for a torch according to claim 4, characterized in that, The outer diameter of the lower insulator (211) is equal to the maximum outer diameter of the base core (202); the outer wall surface of the lower insulator (211) and the outer wall surface of the base core (202) form a continuous cylindrical wall surface; The cylindrical wall surface is provided with an axially oriented limiting groove (240), and the inner wall of the torch shell (101) is provided with an axially oriented limiting protrusion (103). When the first insertion part and the second insertion part are inserted, the limiting groove (240) and the limiting protrusion (103) cooperate to perform circumferential limiting.

8. The gas-electric integrated plug-in device for a torch according to claim 1, characterized in that, The torch housing (101) is provided with a cable passage hole. One end of the second cable (113) is connected to the tail of the public power contact (112), and the other end passes through the cable passage hole and is connected to the torch ignition mechanism. The second cable (113) is sealed with insulating glue between itself and the cable through hole.

9. The gas-electric integrated plug-in device for a torch according to claim 5, characterized in that, The lower insulator (211) and the upper insulator (111) are respectively provided with a lower insulator groove (214) and an upper insulator groove (114); The connection between the female contact (212) and the first cable (213) is located in the lower insulator groove (214), and the connection between the male contact (112) and the second cable (113) is located in the upper insulator groove (114). The lower insulator groove (214) and the upper insulator groove (114) are filled with insulating glue.

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