High-voltage connecting device of large-current dry-type power transformer

Abstract

The utility model discloses a high-voltage connecting device of a large-current dry-type power transformer, and relates to the technical field of transformers. The pipe end of the high-voltage pipe is fixedly connected with a fixing cylinder, the end face of the cable is fixedly sleeved with a connecting cylinder, the connecting cylinder corresponds to the fixing cylinder, the outer side of the connecting cylinder is provided with an inserting plate, the two side faces of the inserting plate are both provided with clamping holes, the outer side wall of the fixing cylinder is fixedly connected with a shell, and the end face of the shell is provided with an inserting opening. The plug board corresponds to and is matched with the socket, a clamping head is arranged in the shell in a liftable manner, and the clamping head corresponds to and is clamped with the clamping hole; according to the utility model, the cable and the high-pressure pipe can be conveniently and fixedly mounted and firmly fixed, and the joint of the connecting cylinder and the fixed cylinder can be in a sealed state through the sealing ring, so that water is prevented from entering the cylinder opening through the joint to cause corrosion of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a high-voltage connection device for a large-current dry-type power transformer. Background Art

[0002] Dry-type transformers are widely used in places such as local lighting, high-rise buildings, airports, docks, CNC machinery and equipment, etc. Simply put, a dry-type transformer refers to a transformer in which the iron core and windings are not impregnated in insulating oil. When a dry-type transformer is in use, it will be connected to other cables. At this time, the cable needs to pass through a high-voltage pipe and be connected to the transformer. When fixing the cable to the high-voltage pipe, a high-voltage connection device is required.

[0003] However, when the existing high-voltage connection devices on the market are in use, there are some deficiencies. When connecting cables, it is rather inconvenient and requires tools such as wrenches, and it needs to be tightened forcefully, which has relatively high requirements for manual labor and is very inconvenient. Moreover, due to the high pressure of the high-voltage pipe and the large axial force of the screw sleeve, through threaded connection, it is easy to cause the thread to slip, which is unsafe and likely to cause accidents. In view of the above problems, the inventor proposes a high-voltage connection device for a large-current dry-type power transformer to solve the above problems. Summary of the Utility Model

[0004] In order to solve the problem that the high-voltage connection device is rather inconvenient when in use; the purpose of the utility model is to provide a high-voltage connection device for a large-current dry-type power transformer.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a high-voltage connection device for a large-current dry-type power transformer, including a high-voltage pipe and a cable. A fixed cylinder is fixedly connected to the pipe end of the high-voltage pipe. A connection cylinder is fixedly sleeved on the end face of the cable. The connection cylinder corresponds to the fixed cylinder. An insertion plate is arranged on the outer side of the connection cylinder. Card holes are arranged on both side faces of the insertion plate. A shell is fixedly connected to the outer side wall of the fixed cylinder. An insertion port is arranged on the end face of the shell. The insertion plate corresponds to and cooperates with the insertion port. A clamping head is arranged in the shell in a liftable manner. The clamping head corresponds to and is clamped with the card holes.

[0006] Preferably, a sealing ring is arranged between the connection cylinder and the fixed cylinder, and the sealing ring is made of rubber material. Through the sealing ring, the connection part between the connection cylinder and the fixed cylinder can be in a sealed state to prevent water liquid from entering the cylinder mouth through the connection part. A convex block is fixedly connected to the side wall of the insertion plate. The side of the convex block facing away from the insertion plate is fixedly connected to the outer side wall of the connection cylinder. The insertion plate is fixed through the convex block. When the connection cylinder and the fixed cylinder are matched, the corresponding insertion plate needs to be inserted into the insertion port of the shell.

[0007] Preferably, a groove is provided inside the housing. One end of the groove extends into the socket. A movable rod is slidably connected through the outer side wall of the housing. The bottom end of the movable rod is fixedly connected to the top end of a chuck. The movable rod and the chuck are both located inside the groove, and the size of the chuck matches the size of the groove. A spring is sleeved on the side wall of the movable rod. The bottom end of the spring is fixedly connected to the top surface of the chuck, and the top end of the spring is fixed to the inner wall of the groove. The top end of the movable rod is fixedly connected to a limit disk. In the middle of the top surface of the limit disk, a convex column is fixedly connected. A cross bar is fixedly connected to the side wall of the convex column, and a handle is fixedly connected to the side wall of the cross bar. The limit disk and the convex column are both located outside the housing. Pull the handle away from the fixed cylinder. Under the action of the cross bar, the convex column can drive the movable rod to move, so that the chuck enters the groove, so that the plug board can be inserted into the socket. At this time, the spring is in a compressed state. After the installation of the plug board is completed, release the handle. Under the action of the spring force, the chuck can move out of the groove and then insert into the card hole to limit and fix the plug board, avoiding the plug board easily detaching from the socket.

[0008] Compared with the prior art, the beneficial effects of the present utility model are as follows: It is convenient to install and fix the cable to the high-pressure pipe, and the fixation is firm. Through the mutual cooperation of the plug board and the socket and the cooperation of the chuck and the card hole, the plug board inserted into the socket can be limited and fixed, thereby completing the installation of the cable and the high-pressure pipe, avoiding the plug board easily detaching from the socket, and avoiding the separation of the connection cylinder and the fixed cylinder. And through the sealing ring, the connection between the connection cylinder and the fixed cylinder can be in a sealed state, avoiding the water liquid entering the barrel opening through the connection and causing corrosion of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0010] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0011] Figure 2 It is an exploded view of the present utility model.

[0012] Figure 3 It is an enlarged view of part A of the present utility model.

[0013] Figure 4 It is a schematic diagram of the internal structure of the housing of the present utility model.

[0014] In the figure: 1, high-pressure pipe; 2, fixed cylinder; 3, cable; 4, connecting cylinder; 5, bump; 6, insertion plate; 7, card hole; 8, housing; 9, socket; 10, sealing ring; 11, groove; 12, movable rod; 13, chuck; 14, limit disk; 15, spring; 16, convex column; 17, cross bar; 18, handle. Detailed implementation mode

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Embodiment: As Figures 1-4 shown, the present invention provides a high-voltage connection device for a large-current dry-type power transformer, including a high-pressure pipe 1 and a cable 3. A fixed cylinder 2 is fixedly connected to the pipe end of the high-pressure pipe 1. A connecting cylinder 4 is fixedly sleeved on the end face of the cable 3. The connecting cylinder 4 corresponds to the fixed cylinder 2. An insertion plate 6 is arranged on the outer side of the connecting cylinder 4. Card holes 7 are arranged on both side faces of the insertion plate 6. A housing 8 is fixedly connected to the outer side wall of the fixed cylinder 2. A socket 9 is arranged on the end face of the housing 8. The insertion plate 6 corresponds to and cooperates with the socket 9. A chuck 13 is arranged in the housing 8 in a liftable manner. The chuck 13 corresponds to and is engaged with the card holes 7.

[0017] A sealing ring 10 is arranged between the connecting cylinder 4 and the fixed cylinder 2, and the sealing ring 10 is made of rubber material.

[0018] By adopting the above technical solution, the sealing ring 10 can make the connection between the connecting cylinder 4 and the fixed cylinder 2 in a sealed state to prevent water from entering the barrel opening through the connection.

[0019] A bump 5 is fixedly connected to the side wall of the insertion plate 6, and the side of the bump 5 facing away from the insertion plate 6 is fixedly connected to the outer side wall of the connecting cylinder 4.

[0020] By adopting the above technical solution, the insertion plate 6 is fixed by the bump 5. When the connecting cylinder 4 and the fixed cylinder 2 are matched, the insertion plate 6 needs to be inserted into the socket 9 of the housing 8 correspondingly.

[0021] The interior of the housing 8 is provided with a groove 11. One end of the groove 11 extends into the socket 9. The outer side wall of the housing 8 is slidably connected with a movable rod 12 in an inserted manner. The bottom end of the movable rod 12 is fixedly connected to the top end of a chuck 13. The movable rod 12 and the chuck 13 are both located within the groove 11, and the size of the chuck 13 matches the size of the groove 11. A spring 15 is sleeved on the side wall of the movable rod 12. The bottom end of the spring 15 is fixedly connected to the top surface of the chuck 13, and the top end of the spring 15 is fixed to the inner wall of the groove 11. The top end of the movable rod 12 is fixedly connected with a limit disk 14. The middle part of the top surface of the limit disk 14 is fixedly connected with a convex column 16. The side wall of the convex column 16 is fixedly connected with a cross bar 17. The side wall of the cross bar 17 is fixedly connected with a handle 18. The limit disk 14 and the convex column 16 are both located outside the housing 8.

[0022] By adopting the above technical solution, when the handle 18 is pulled in the direction away from the fixed cylinder 2, the convex column 16 can drive the movable rod 12 to move under the action of the cross bar 17, so that the chuck 13 enters the groove 11, so that the insertion plate 6 can be inserted into the socket 9, and at this time the spring 15 is in a compressed state. After the installation of the insertion plate 6 is completed, the handle 18 is released, and under the action of the elastic force of the spring 15, the chuck 13 can be moved out of the groove 11 and then inserted into the locking hole 7 to limit and fix the insertion plate 6, preventing the insertion plate 6 from easily detaching from the socket 9.

[0023] Working principle: When the present utility model is in use, when the connecting cylinder 4 is matched with the fixed cylinder 2, the insertion plate 6 is made to correspond to the socket 9 of the housing 8. Then, the handle 18 is pulled in the direction away from the fixed cylinder 2. Under the action of the cross bar 17, the convex column 16 can drive the movable rod 12 to move, so that the chuck 13 enters the groove 11, and further the insertion plate 6 is inserted into the socket 9, and at this time the spring 15 is in a compressed state;

[0024] After the installation of the insertion plate 6 is completed, the handle 18 is released. Under the action of the elastic force of the spring 15, the chuck 13 can be moved out of the groove 11 and then inserted into the locking hole 7 to limit and fix the insertion plate 6, preventing the insertion plate 6 from easily detaching from the socket 9;

[0025] And through the sealing ring 10, the connection between the connecting cylinder 4 and the fixed cylinder 2 can be in a sealed state, so as to prevent the water liquid from entering the barrel opening through the connection.

[0026] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and its equivalent technologies, the present utility model is also intended to include these changes and modifications.

Claims

1. A high-voltage connection device for a large-current dry-type power transformer, comprising a high-voltage pipe (1) and a cable (3), characterized in that: A fixing cylinder (2) is fixedly connected to the pipe end of the high-pressure pipe (1). A connecting cylinder (4) is fixedly sleeved on the end face of the cable (3). The connecting cylinder (4) corresponds to the fixing cylinder (2). An insertion plate (6) is arranged on the outer side of the connecting cylinder (4). Card holes (7) are arranged on both side faces of the insertion plate (6). A housing (8) is fixedly connected to the outer wall of the fixing cylinder (2). An insertion opening (9) is arranged on the end face of the housing (8). The insertion plate (6) corresponds to and cooperates with the insertion opening (9). A clamping head (13) is arranged in the housing (8) in a liftable manner. The clamping head (13) corresponds to and engages with the card holes (7).

2. The high-voltage connection device of a large-current dry-type power transformer as described in claim 1, wherein, A sealing ring (10) is arranged between the connecting cylinder (4) and the fixing cylinder (2), and the sealing ring (10) is made of rubber material.

3. The high-voltage connection device of a large-current dry-type power transformer as described in claim 1, characterized in that, A convex block (5) is fixedly connected to the side wall of the insertion plate (6), and the side of the convex block (5) facing away from the insertion plate (6) is fixedly connected to the outer wall of the connecting cylinder (4).

4. The high-voltage connection device of a large-current dry-type power transformer according to claim 1, characterized in that A groove (11) is arranged inside the housing (8), and one end of the groove (11) extends into the insertion opening (9).

5. The high-voltage connection device of a large-current dry-type power transformer according to claim 4, characterized in that, A movable rod (12) is connected to the outer wall of the housing (8) in an inserted and sliding manner. The bottom end of the movable rod (12) is fixedly connected to the top end of the clamping head (13). The movable rod (12) and the clamping head (13) are both located in the groove (11), and the size of the clamping head (13) matches the size of the groove (11).

6. The high-voltage connection device of a large-current dry-type power transformer according to claim 5, characterized in that, A spring (15) is sleeved on the side wall of the movable rod (12). The bottom end of the spring (15) is fixedly connected to the top surface of the clamping head (13), and the top end of the spring (15) is fixed to the inner wall of the groove (11).

7. The high-voltage connection device of a large-current dry-type power transformer according to claim 5, characterized in that, A limiting disk (14) is fixedly connected to the top end of the movable rod (12). A convex column (16) is fixedly connected to the middle of the top surface of the limiting disk (14). A cross bar (17) is fixedly connected to the side wall of the convex column (16). A handle (18) is fixedly connected to the side wall of the cross bar (17).

8. The high-voltage connection device of a large-current dry-type power transformer according to claim 7, characterized in that, The limiting disk (14) and the convex column (16) are both located outside the housing (8).

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