Plasma arc cutting machine for nuclear power pressurized water reactor pipe fitting machining

Abstract

The invention relates to a plasma arc cutting machine for nuclear power pressurized water reactor pipe fitting machining, which comprises an equipment main body and a cutting gun, a connecting seat is arranged on the side surface of the equipment main body, a connecting wire is arranged at one end of the cutting gun, a male plug is arranged at the end part of the connecting wire and is connected with the connecting seat, a slot is formed in the connecting seat, and a dustproof cover is arranged in the slot. A conductive hole is further formed in the slot, a movable conductive column is arranged in the male plug, and the conductive column is electrically connected with the conductive hole; according to the invention, the connecting line and the connecting seat can be conveniently installed, the connecting seat has a dustproof function, and the operation is convenient.

Description

Technical Field

[0001] This invention belongs to the field of plasma cutting machine technology, specifically a plasma arc cutting machine for processing nuclear power water reactor pipe fittings. Background Technology

[0002] Plasma arc cutting machines are key equipment in the processing of nuclear power plant tubular components. They connect the cutting torch to the main body of the equipment via a connecting cable to achieve the cutting function. In actual production environments, especially in nuclear power plant equipment processing workshops, the air typically contains significant amounts of pollutants such as metal dust and cutting debris. These pollutants can easily penetrate the electrical connections of the equipment, potentially causing poor contact, short circuits, or arc discharge, severely impacting the stability of the cutting process and the safety and lifespan of the equipment.

[0003] To protect electrical connection points, existing technologies typically incorporate folding dust covers on the connectors of the equipment body. However, these traditional dust covers present a significant design contradiction: to ensure a tight seal, the dust cover needs to engage tightly with the connector, often resulting in difficult opening and closing, sometimes requiring tools and causing inconvenience. Conversely, if the tightness is reduced for ease of operation, the dust cover is prone to loosening due to equipment vibration or accidental contact, rendering it ineffective. More significantly, after prolonged use, frequent mechanical opening and closing can cause wear or fatigue fracture of the latching structure, causing the dust cover to deteriorate from being "too tight" to "failed," unable to close reliably, rendering its dustproof function meaningless.

[0004] Therefore, how to design a connection structure that can reliably seal and prevent dust when not connected, facilitate quick and labor-saving operation when connected, and has good durability has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a plasma arc cutting machine for processing nuclear power water reactor pipe fittings, comprising, The equipment includes a main body and a cutting gun. A connecting seat is provided on the side of the main body. A connecting wire is provided at one end of the cutting gun. A male plug is provided at the end of the connecting wire and connects to the connecting seat. A slot is provided in the connecting seat. A dust cover is provided in the slot. A conductive hole is also provided in the slot. A movable conductive post is provided in the male plug. The conductive post is electrically connected to the conductive hole.

[0007] As a preferred technical solution for a plasma arc cutting machine for processing nuclear power water reactor pipe fittings, the slot has a rotating groove in the middle, the dust cover has a rotating shaft in the middle, and the rotating shaft is embedded in the rotating groove.

[0008] As a preferred technical solution for a plasma arc cutting machine for processing nuclear power water reactor pipe fittings, the slot is further provided with an arc groove, the arc groove is provided with a sliding arc plate, and the arc groove is provided with a first spring connecting the sliding arc plate.

[0009] As a preferred technical solution for a plasma arc cutting machine for processing nuclear power water reactor pipe fittings, the conductive hole includes a first hole position and a second hole position, the first hole position and the second hole position are connected to form an arc groove structure, and a clamping plate is provided above the second hole position.

[0010] As a preferred technical solution for a plasma arc cutting machine for processing nuclear power water reactor pipe fittings, the dust cover is provided with pin holes and through holes, a pin is provided in the pin holes, the end of the pin is embedded in the arc groove, and the pin is magnetically connected to the sliding arc plate.

[0011] As a preferred technical solution for a plasma arc cutting machine for processing nuclear power water reactor pipe fittings, the male plug is provided with an annular groove, a rotating ring is provided in the annular groove, and a column groove is provided inward at the end of the male plug, the column groove is provided through the annular groove, and the conductive column is provided in the column groove.

[0012] As a preferred technical solution for a plasma arc cutting machine for processing nuclear power water reactor pipe fittings, a square groove is provided at the bottom of the column groove, a square plate is provided at the end of the conductive column, the square plate is provided in the square groove, and a second spring is provided in the square groove and connected to the square plate.

[0013] As a preferred technical solution for a plasma arc cutting machine for processing nuclear power water reactor pipe fittings, the conductive post has a cutting groove on its side, a guide slope at one end of the cutting groove, and a limiting ring groove on the conductive post.

[0014] As a preferred technical solution for a plasma arc cutting machine for processing nuclear power water reactor pipe fittings, the inner side of the rotating ring is provided with a clearance groove, a spiral platform is provided in the clearance groove, a slope is provided on the spiral platform, the guide slope contacts the slope, and the spiral platform is located in the cutting groove.

[0015] As a preferred technical solution for a plasma arc cutting machine for processing nuclear power water reactor pipe fittings, the male plug end is provided with a positioning groove, and the relative position of the positioning groove and the column groove is consistent with the relative position of the pin hole and the through hole.

[0016] The beneficial effects of the present invention are: the present invention facilitates the installation of the connecting wire and the connecting base, and the connecting base has a dustproof function, making it easy to operate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connecting seat in the present invention; Figure 3 This is a schematic diagram of the dust cover structure in this invention; Figure 4 This is a schematic diagram of the internal structure of the slot in this invention; Figure 5 This is a partial cross-sectional view of the slot structure in this invention; Figure 6 This is an exploded view of the male plug in this invention; Figure 7 This is a schematic diagram of the structure of the transfer ring in this invention; Figure 8 This is a cross-sectional structural diagram of the male plug in this invention.

[0018] Reference numerals: 100, Equipment body; 200, Cutting gun; 201, Connecting wire; 300, Connecting seat; 302a, Rotating shaft; 301a, Rotating groove; 301, Slot; 301d, First spring; 303, Conductive hole; 303a, First hole; 303b, Second hole; 303c, Clamping plate; 302, Dust cover; 301b, Arc groove; 303d, Pin; 301c, Sliding arc Plate; 402, Ring groove; 405, Square groove; 406, Second spring; 401a, Square plate; 401, Conductive post; 401d, Limiting ring groove; 403, Rotary ring; 403a, Clearance groove; 403c, Slope; 401c, Guide slope; 403b, Spiral platform; 401b, Cut groove; 400, Male plug; 407, Positioning groove; 404, Column groove; 302b, Pin hole; 302c, Through hole. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0023] Example 1 Reference Figures 1-8 This embodiment provides a plasma arc cutting machine for processing nuclear power water reactor pipe fittings, including a main body 100 and a cutting torch 200. A connecting seat 300 is provided on the side of the main body 100. A connecting line 201 is provided at one end of the cutting torch 200. A male plug 400 is provided at the end of the connecting line 201 and connects to the connecting seat 300. A slot 301 is provided in the connecting seat 300. A dust cover 302 is provided in the slot 301. A conductive hole 303 is also provided in the slot 301. A movable conductive post 401 is provided in the male plug 400. The conductive post 401 is electrically connected to the conductive hole 303.

[0024] In this embodiment, since the working environment in the factory is relatively poor and there is a lot of dust and debris, a dust cover is needed to prevent dust from entering the connector 300 and affecting its use. The existing folding dust cover has contradictory problems. On the one hand, it is not tight and is easy to loosen. On the other hand, it is too tight, requiring force to fasten or even tools. Both of these situations may even occur on the same dust cover. That is, it is tight when used initially, but after a period of use, it cannot be fastened or even breaks and falls off, making it unusable.

[0025] Therefore, the connection structure needs to be adjusted to make it dustproof and easy to connect and use.

[0026] In this application, the connector 300 is provided with a dust cover. Preferably, the connector 300 is a detachable structure and is fixed to the outer shell of the main body 100 of the equipment by bolts. The connector 300 can be configured to tilt downward after installation, so that dust can be blocked by the dust cover 302 while also preventing dust from accumulating in the slot 301. Furthermore, the tilt angle of the connector is small, which makes it easy to insert the male plug 400 for connection.

[0027] The conductive post 401 is telescopic and adjustable.

[0028] A conductive layer is provided inside the conductive hole, and the conductive layer is electrically connected to the components inside the main body 100 of the device. The conductive post 401 is connected to the internal wire of the connecting line 201.

[0029] Except for the conductive post 401 and the conductive layer, all other parts of the connector 300 and the male plug 400 are made of insulating material.

[0030] The slot 301 has a rotating groove 301a in the middle, and the dust cover 302 has a rotating shaft 302a in the middle, with the rotating shaft 302a embedded in the rotating groove 301a.

[0031] The dust cover 302 is fixed in the slot 301 via the rotating groove 301a, and the dust cover 302 can rotate. Specifically, the slot 301 is also provided with an arc groove 301b, a sliding arc plate 301c is provided in the arc groove 301b, and a first spring 301d is provided in the arc groove 301b to connect the sliding arc plate 301c.

[0032] The sliding block 301c can slide in the arc groove 301b.

[0033] The center of the arc groove 301b coincides with the center of the rotating groove 301a. Therefore, while the pin 303d slides in the arc groove 301b, the rotating shaft 302a also slides in the rotating groove 301a.

[0034] The central angle of the arc groove 301b is about 120°. The pin 303d rotates from one end of the arc groove 301b to the other end. The dust cover 302 rotates about 90°. The top opening of the arc groove 301b leaves about 90° of space for the pin 303d to move. There is space inside the arc groove 301b for the first spring 301d to be compressed and stored.

[0035] In its initial state, the conductive hole 303 is blocked by the dust cover 302. Figure 4 When the dust cover 302 is rotated clockwise to the bottom, the first spring 301d is compressed. At this time, the position of the through hole 302c corresponds to that of the conductive hole 303, and the conductive post 401 can be inserted into the conductive hole 303.

[0036] The conductive hole 303 includes a first hole position 303a and a second hole position 303b. The first hole position 303a and the second hole position 303b are connected to form an arc groove structure. A retaining plate 303c is provided above the second hole position 303b.

[0037] The dimensions of the first hole 303a are the same as those of the conductive post 401, and the conductive post 401 can be inserted into the first hole 303a, and the conductive post 401 can be rotated from the first hole 303a to the second hole 303b.

[0038] The dust cover 302 is provided with a pin hole 302b and a through hole 302c. A pin 303d is provided in the pin hole 302b. The end of the pin 303d is embedded in the arc groove 301b. The pin 303d is magnetically connected to the sliding arc plate 301c.

[0039] The sliding arc plate 301c is provided with a first magnetic attraction surface, and the outer side of the pin 303d is provided with a second magnetic attraction surface. The sliding arc plate 301c covers one side of the pin 303d, and the magnetic attraction structure allows the pin 303d to move relative to the sliding arc plate 301c along the axial direction of the pin 303d.

[0040] Furthermore, the first magnetic surface does not cover the entire inner side of the sliding arc plate 301c, but rather... Figure 5 As shown, a small gap is left at the bottom, which prevents the end of the pin 303d from contacting the bottom of the arc groove 301b under normal conditions. However, when the other end of the pin 303d is pressed, the pin 303d moves and contacts the bottom of the arc groove 301b.

[0041] The male plug 400 is provided with an annular groove 402, and a rotating ring 403 is provided in the annular groove 402. A post groove 404 is provided inward at the end of the male plug 400, and the post groove 404 is provided through the annular groove 402. A conductive post 401 is provided in the post groove 404.

[0042] The rotating ring 403 can rotate within the annular groove 402.

[0043] A square groove 405 is provided at the bottom of the column groove 404, and a square plate 401a is provided at the end of the conductive column 401. The square plate 401a is provided in the square groove 405, and a second spring 406 is provided in the square groove 405 and connected to the square plate 401a.

[0044] The inner wall of the square channel 405 is provided with a conductive layer. The square plate 401a and the conductive column 401 are both made of conductive materials. The square plate 401a is always in contact with the conductive layer of the inner wall of the square channel during the movement, maintaining electrical connection.

[0045] The second spring 406 tends to push the square plate 401a out of the square groove 405, that is, the second spring 406 has an outward pushing force on the square plate 401a.

[0046] The conductive post 401 has a groove 401b on its side, and a guide slope 401c is provided at one end of the groove 401b. The conductive post 401 is also provided with a limiting ring groove 401d.

[0047] The inner side of the rotating ring 403 is provided with a relief groove 403a, and a spiral platform 403b is provided in the relief groove 403a. A slope 403c is provided on the spiral platform 403b. The guide slope 401c contacts the slope 403c, and the spiral platform 403b is located in the groove 401b.

[0048] Specifically, under the thrust of the second spring 406, the conductive post 401 tends to extend out of the male plug 400, that is, the guide slope 401c is in a position where... Figure 7 At the lower right end of the spiral platform 403b shown, under the action of the guide inclined surface 401c and the slope surface 403c, if the spiral platform ring 403 is rotated clockwise relative to the male plug 400, the conductive post 401 will be pushed to overcome the second spring 406, and the conductive post 401 will retract inward into the post groove 404.

[0049] The male plug 400 has a positioning groove 407 at its end. The relative positions of the positioning groove 407 and the post groove 404 are consistent with the relative positions of the pin hole 302b and the through hole 302c.

[0050] In summary, the operation process of this invention is as follows: First, rotate the rotating ring 403 clockwise to retract the guide post 401 into the post groove 404. Observe the approximate position of the pin. Place the end of the male plug 400 into the slot 301. At this time, the end of the male plug 400 will press against the pin, and the other end of the pin will contact the bottom of the arc groove 301b. At this time, the pin will not easily slide in the arc groove 301b, while the male plug 400 rotates relative to the pin. During the rotation, after the pin aligns with the positioning groove 407, the pin returns to its original position in the positioning groove 407 under the action of magnetic force. The other end of the pin does not contact the arc groove 301b. At this time, continue to rotate the male plug 400, which will drive the pin to overcome the first... When spring 301d moves, dust cover 302 rotates simultaneously, exposing the conductive hole. At this time, the position of conductive post 401 corresponds to the position of conductive hole. Then, rotating ring 403 is first released, and conductive post 401 is pushed out under the action of second spring 406 (the second spring pushes rotating ring 403 to rotate and push conductive post 401 out). Conductive post 401 enters conductive hole. At this time, the position of limiting ring groove 401d corresponds to the position of clamping plate 303c. When male plug 400 is released, male plug 400 tends to return to its original position under the pushing force of first spring 301d, that is, it rotates counterclockwise. Therefore, conductive post 401 moves, and clamping plate 303c is embedded in limiting ring groove 401d to achieve fixation.

[0051] The above is an explanation of the installation process of this invention. In actual operation, it is simple, convenient and quick. Hold the male plug 400, twist the ring with your fingers, insert the male plug 400 and continue to rotate the male plug, and then release the ring and the male plug respectively.

[0052] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A plasma arc cutting machine for processing nuclear power water reactor pipe fittings, characterized in that: include, The equipment body (100) and the cutting gun (200) are provided. A connecting seat (300) is provided on the side of the equipment body (100). A connecting line (201) is provided at one end of the cutting gun (200). A male plug (400) is provided at the end of the connecting line (201) and connects to the connecting seat (300). A slot (301) is provided in the connecting seat (300). A dust cover (302) is provided in the slot (301). A conductive hole (303) is also provided in the slot (301). A movable conductive post (401) is provided in the male plug (400). The conductive post (401) is electrically connected to the conductive hole (303).

2. The plasma arc cutting machine for processing nuclear power water reactor pipe fittings according to claim 1, characterized in that: The slot (301) has a rotating groove (301a) in the middle, and the dust cover (302) has a rotating shaft (302a) in the middle, and the rotating shaft (302a) is embedded in the rotating groove (301a).

3. The plasma arc cutting machine for processing nuclear power water reactor pipe fittings according to claim 2, characterized in that: The slot (301) is also provided with an arc groove (301b), a sliding arc plate (301c) is provided in the arc groove (301b), and a first spring (301d) is provided in the arc groove (301b) to connect the sliding arc plate (301c).

4. The plasma arc cutting machine for processing nuclear power water reactor pipe fittings according to claim 3, characterized in that: The conductive hole (303) includes a first hole (303a) and a second hole (303b), the first hole (303a) and the second hole (303b) are connected to form an arc groove structure, and a retaining plate (303c) is provided above the second hole (303b).

5. The plasma arc cutting machine for processing nuclear power water reactor pipe fittings according to claim 4, characterized in that: The dust cover (302) is provided with a pin hole (302b) and a through hole (302c). A pin (303d) is provided in the pin hole (302b). The end of the pin (303d) is embedded in the arc groove (301b). The pin (303d) is magnetically connected to the sliding arc plate (301c).

6. The plasma arc cutting machine for processing nuclear power water reactor pipe fittings according to claim 5, characterized in that: The male plug (400) is provided with an annular groove (402), and a rotating ring (403) is provided in the annular groove (402). A column groove (404) is provided inward at the end of the male plug (400), and the column groove (404) is provided through the annular groove (402). The conductive post (401) is provided in the column groove (404).

7. The plasma arc cutting machine for processing nuclear power water reactor pipe fittings according to claim 6, characterized in that: The bottom of the column groove (404) is provided with a square groove (405), and the end of the conductive column (401) is provided with a square plate (401a). The square plate (401a) is disposed in the square groove (405), and a second spring (406) is provided in the square groove (405) and connected to the square plate (401a).

8. The plasma arc cutting machine for processing nuclear power water reactor pipe fittings according to claim 7, characterized in that: The conductive post (401) has a groove (401b) on its side, and a guide slope (401c) is provided at one end of the groove (401b). The conductive post (401) is also provided with a limiting ring groove (401d).

9. The plasma arc cutting machine for processing nuclear power water reactor pipe fittings according to claim 8, characterized in that: The inner side of the rotating ring (403) is provided with a relief groove (403a), a spiral platform (403b) is provided in the relief groove (403a), a slope (403c) is provided on the spiral platform (403b), the guide slope (401c) is in contact with the slope, and the spiral platform (403b) is located in the groove (401b).

10. The plasma arc cutting machine for processing nuclear power water reactor pipe fittings according to claim 9, characterized in that: The male plug (400) is provided with a positioning groove (407) at its end. The relative positions of the positioning groove (407) and the post groove (404) are consistent with the relative positions of the pin hole (302b) and the through hole (302c).

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