A transmission and transformation line insulation test device

Abstract

The invention discloses a transmission and transformation line insulation test device, comprising a box body, a box door hinged on the upper end of the box body, a leakage current tester arranged on the front side of the bottom wall of the box body, and a connecting mechanism and a fixing mechanism; the connecting mechanism comprises a fixing plate, a plug plate and a socket, the sockets are arranged at the middle of the left and right ends of the box door respectively, the left and right ends of the box body are respectively provided with fixing plates, the upper sides of the ends of the fixing plates close to the inner center of the box body are respectively provided with plug plates, and the ends of the plug plates close to the inner center of the box body are respectively plugged with the laterally adjacent sockets; the fixing mechanism is arranged inside the box body, the transmission and transformation line insulation test device can prevent the equipment inside the box body from being damaged, ensure the performance and life of the transmission and transformation line insulation test device, can make the connection between the wire and the positive electrode interface and the negative electrode interface more stable, and further ensure the test effect of the transmission and transformation line insulation.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission and transformation line testing, in particular to a power transmission and transformation line insulation testing device. Background Art

[0002] The function of the power transmission and transformation line insulation test device is to evaluate the insulation performance and safety status of the power transmission and transformation line and its related equipment. Through the test, defects in the insulation material, such as cracks, aging, wear or moisture, can be found. Regular insulation testing helps prevent failures and accidents of the power transmission and transformation line and ensure the reliability of the power system. When using the power transmission and transformation line insulation test device, the power transmission and transformation line insulation test device is usually connected to the insulation part of the power transmission and transformation line through a wire, and then the leakage current tester is connected in parallel to the insulator to be tested. After that, the power transmission and transformation line insulation test device provides an output voltage. At this time, the leakage current tester measures the current flowing through the insulator. The purpose of the leakage current test is to measure the unexpected current passing through the insulating material under a certain voltage, that is, the leakage current. Finally, the integrity and aging of the insulating material can be evaluated based on the leakage current data; Although the existing power transmission and transformation line insulation test device can use the elastic deformation of the plastic buckle to control the opening or closing of the box door, when the plastic buckle ages, it will lose its original elasticity and toughness, resulting in a loose connection between the box body and the door. The loose connection may cause the door to open accidentally during transportation or use, increasing the risk of equipment damage. In the process of power transmission and transformation line insulation testing, the wire connectors often become loose and fall off due to being pulled or accidentally collided, affecting the test effect of the insulation of the transmission and transformation line. For this reason, we propose a power transmission and transformation line insulation test device. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a power transmission and transformation line insulation test device, which solves the problem of loose connection between the box body and the box door due to the loss of original elasticity and toughness of the plastic buckle, prevents the equipment inside the box from being damaged, ensures the performance and life of the equipment, can make the connection between the wire and the positive electrode interface and the negative electrode interface more stable, is simple to operate, further ensures the test effect of the power transmission and transformation line insulation, and can effectively solve the problems in the background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a transmission and transformation line insulation test device, comprising a box body, a box door hinged at the upper end of the box body, a leakage current tester arranged on the front side of the bottom wall of the box body, and also comprising a connecting mechanism and a fixing mechanism; Connection mechanism: It includes a fixed plate, a plug plate and a socket. The sockets are respectively arranged in the middle of the left and right ends of the box door. The left and right ends of the box body are respectively provided with fixed plates. The upper side of the end of the fixed plate close to the center of the box body is respectively provided with a plug plate. The end of the plug plate close to the center of the box body is respectively plugged with the horizontally adjacent sockets. Fixing mechanism: It is arranged inside the box, which solves the problem of loose connection between the box and the door due to the loss of original elasticity and toughness of the plastic buckle, prevents the equipment inside the box from being damaged, ensures the performance and life of the equipment, and can make the connection between the wire and the positive and negative interfaces more stable, simple to operate, and further ensure the test effect of the insulation of the transmission and transformation line.

[0005] Furthermore, it also includes a single-chip microcomputer, which is arranged inside the box, the input end of the single-chip microcomputer is electrically connected to the external power supply, and the leakage current tester is bidirectionally electrically connected to the single-chip microcomputer, which can regulate the electrical components inside the equipment.

[0006] Furthermore, the connecting mechanism also includes a cavity, a horizontal plate, a vertical pole, a mounting plate and an adjusting plate. A cavity is provided on the lower side of the interior of the box body, and the middle parts of the left and right walls of the cavity are slidably connected with horizontal plates. The upper end of the horizontal plate is fixedly connected with a fixing plate on one side away from the center of the interior of the box body, and the upper end of the horizontal plate is close to the center of the interior of the box body. Vertical poles are provided, the mounting plate is slidably connected to the bottom wall of the cavity, and the upper side of the rear end of the mounting plate is provided with an adjusting plate, and the upper end of the adjusting plate is provided with a limiting groove, and the upper ends of the vertical poles are respectively located inside the vertically adjacent limiting grooves, so that the position of the plug-in plate can be adjusted.

[0007] Furthermore, the fixing mechanism includes an installation groove, a fixing rod, a connecting plate and a clamping plate. The installation groove is arranged on the left side of the inside of the box body, and a fixing rod is arranged on the lower side of the inside of the installation groove. The front and rear sides of the outer arc surface of the fixing rod are slidably connected with connecting plates, and the connecting plates are slidably connected with the sliding grooves arranged in the middle part of the top wall of the installation groove. Clamping plates are respectively arranged on the upper sides of the inner sides of the two connecting plates, which can limit and fix the wires.

[0008] Furthermore, the fixing mechanism also includes a transmission plate, a trapezoidal block, a sliding column, a top block and a pressure plate. The transmission plates are all arranged on the lower side of the left end of the connecting plate, and the left end of the transmission plate is provided with a trapezoidal block. The sliding column is slidably connected to the sliding hole provided on the left side of the top wall of the mounting groove, the upper end of the sliding column is provided with a pressure plate, and the lower end of the sliding column is provided with a top block. The inclined surfaces of the upper ends of the trapezoidal blocks are in contact with the lower surface of the top block, so that the position of the clamping plate can be adjusted.

[0009] Furthermore, a screw is rotatably connected to the lower side of the cavity, an adjusting wheel is provided at the front end of the screw, and the mounting plate is threadedly connected to the front side of the outer arc surface of the screw through a threaded hole provided on the lower side of its front end, so that the position of the adjusting plate can be adjusted through the mounting plate.

[0010] Furthermore, springs are respectively arranged between the end of the connecting plate away from the inner center of the box body and the inner wall of the installation groove. The springs are all sleeved on the outside of the outer side of the fixing rod. The thrust generated by the extension of the spring drives the clamping plate to move and reset through the connecting plate.

[0011] Furthermore, a positive electrode interface and a negative electrode interface are respectively provided on the rear side of the bottom wall of the box, the negative electrode interface is located on the right side of the positive electrode interface, the connecting plates are located between the positive electrode interface and the negative electrode interface, the two longitudinally adjacent clamping plates correspond to the upper and lower positions of the positive electrode interface and the negative electrode interface respectively, and a transformer is provided on the right side of the bottom wall of the box, the input end of the transformer is electrically connected to the output end of the single-chip microcomputer, and the input end of the positive electrode interface is electrically connected to the output end of the transformer, and the operator adjusts the output voltage through the transformer according to actual conditions.

[0012] Furthermore, a return spring is arranged between the upper end of the pressure plate and the top wall of the installation groove. The return spring is sleeved on the outside of the lower side of the sliding column. The tension generated by the contraction of the return spring drives the sliding column to move upward and reset through the top block.

[0013] Compared with the prior art, the invention has the following advantages: 1. The opening or closing of the box door can be controlled by the matching setting of the plug board and the socket, replacing the traditional method of controlling the opening or closing of the box door by the elastic deformation of the plastic buckle. It solves the problem of loose connection between the box body and the door due to the loss of original elasticity and toughness of the plastic buckle, prevents the equipment inside the box from being damaged, and ensures the performance and life of the transmission and transformation line insulation test device.

[0014] 2. Through the coordinated setting of the connecting plate and the clamping plate, the conductor can be limited and fixed, which can make the connection between the conductor and the positive electrode interface and the negative electrode interface more stable and simple to operate, further ensuring the test effect of the insulation of the transmission and transformation line. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the front side cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the upper side of the present invention; Figure 4 It is a schematic diagram of the right side cross-sectional structure of the present invention; Figure 5This is an enlarged structural schematic diagram of location A of the present invention; Figure 6 It is a schematic diagram of the enlarged structure of point B of the present invention.

[0016] In the figure: 1 box body, 2 single chip microcomputer, 3 leakage current tester, 4 transformer, 5 box door, 6 positive electrode interface, 7 negative electrode interface, 8 connecting mechanism, 81 cavity, 82 horizontal plate, 83 fixing plate, 84 plug plate, 85 socket, 86 vertical pole, 87 mounting plate, 88 adjustment plate, 9 fixing mechanism, 91 mounting groove, 92 fixing rod, 93 connecting plate, 94 clamping plate, 95 transmission plate, 96 trapezoidal block, 97 sliding column, 98 top block, 99 pressure plate, 10 screw rod, 11 adjusting wheel, 12 spring, 13 reset spring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-6 , This embodiment provides a technical solution: a transmission and transformation line insulation test device, including a box body 1, a box door 5 is hinged at the upper end of the box body 1, a leakage current tester 3 is arranged on the front side of the bottom wall of the box body 1, and also includes a connecting mechanism 8 and a fixing mechanism 9; Connecting mechanism 8: It includes a fixing plate 83, a plug plate 84 and a socket 85. The socket 85 is respectively arranged in the middle of the left and right ends of the box door 5. The left and right ends of the box body 1 are respectively provided with a fixing plate 83. The upper side of the end of 83 close to the inner center of the box body 1 is respectively provided with a plug plate 84. The end of the plug plate 84 close to the inner center of the box body 1 is respectively plugged with the laterally adjacent socket 85. The connecting mechanism 8 also includes a cavity 81, a horizontal plate 82, a vertical rod 86, a mounting plate 87 and an adjusting plate 88. The lower side of the box body 1 is provided with a cavity 81. The middle parts of the left and right walls of the cavity 81 are slidably connected with the horizontal plate 82. The upper end of the horizontal plate 82 is fixedly connected with the fixing plate 83 on the side away from the inner center of the box body 1. The upper end of the horizontal plate 82 is fixedly connected with the fixing plate 83. A vertical rod 86 is provided on one side of the end close to the inner center of the box body 1, and a mounting plate 87 is slidably connected to the bottom wall of the cavity 81. An adjusting plate 88 is provided on the upper side of the rear end of the mounting plate 87. The upper ends of the adjusting plates 88 are provided with limiting grooves. The upper ends of the vertical rods 86 are respectively located inside the vertically adjacent limiting grooves. The opening or closing of the box door 5 can be controlled by the matching arrangement of the plug plate 84 and the socket 85, replacing the traditional method of controlling the opening or closing of the box door 5 by the elastic deformation of the plastic buckle, solving the problem of loose connection between the box body 1 and the box door 5 due to the loss of original elasticity and toughness of the plastic buckle, preventing the equipment inside the box body 1 from being damaged, and ensuring the performance and life of the equipment; Fixing mechanism 9: It is arranged inside the box body 1, and the fixing mechanism 9 includes a mounting groove 91, a fixing rod 92, a connecting plate 93 and a clamping plate 94. The mounting groove 91 is arranged on the left side inside the box body 1, and a fixing rod 92 is arranged on the lower side inside the mounting groove 91. The front and rear sides of the outer arc surface of the fixing rod 92 are slidably connected with connecting plates 93, and the connecting plates 93 are slidably connected with the sliding grooves arranged in the middle of the top wall of the mounting groove 91. The upper sides of the two connecting plates 93 relative to the inner side surfaces are respectively provided with clamping plates 94. The fixing mechanism 9 also includes a transmission plate 95, a trapezoidal block 96, a sliding column 97, a top block 98 and a pressure plate 99. Plates 95 are all arranged on the lower side of the left end of the connecting plate 93, and the left end of the transmission plate 95 is provided with a trapezoidal block 96. The sliding column 97 is slidably connected with the sliding hole arranged on the left side of the top wall of the mounting groove 91, and the upper end of the sliding column 97 is provided with a pressure plate 99, and the lower end of the sliding column 97 is provided with a top block 98. The inclined surface of the upper end of the trapezoidal block 96 is in contact with the lower surface of the top block 98. Through the coordinated arrangement of the connecting plate 93 and the clamping plate 94, the wire can be limited and fixed, and the connection between the wire and the positive interface 6 and the negative interface 7 can be made more stable and simple to operate, which further ensures the test effect of the insulation of the transmission and transformation line.

[0019] Among them: it also includes a single-chip microcomputer 2, which is arranged inside the box 1, and the input end of the single-chip microcomputer 2 is electrically connected to the external power supply. The leakage current tester 3 is bidirectionally electrically connected to the single-chip microcomputer 2, which can regulate the electrical components inside the equipment.

[0020] Among them: the lower side of the cavity 81 is rotatably connected with a screw rod 10, the front end of the screw rod 10 is provided with an adjusting wheel 11, and the mounting plate 87 is threadedly connected to the front side of the outer arc surface of the screw rod 10 through a threaded hole provided on the lower side of its front end. When the operator rotates the adjusting wheel 11, the adjusting wheel 11 drives the screw rod 10 to rotate, and during the rotation process, the screw 10 drives the mounting plate 87 to move forward through the threaded connection.

[0021] Among them: a spring 12 is respectively arranged between the end of the connecting plate 93 away from the inner center of the box body 1 and the inner wall of the mounting groove 91, and the spring 12 is sleeved on the outside of the outer side of the fixing rod 92. The thrust generated by the extension of the spring 12 drives the clamping plate 94 to move and reset through the connecting plate 93, and finally makes the clamping plate 94 contact with the outer arc surface of the wire, thereby realizing the limit fixation of the wire.

[0022] Among them: the rear side of the bottom wall of the box body 1 is respectively provided with a positive electrode interface 6 and a negative electrode interface 7, the negative electrode interface 7 is located on the right side of the positive electrode interface 6, the connecting plates 93 are located between the positive electrode interface 6 and the negative electrode interface 7, and the two longitudinally adjacent clamping plates 94 correspond to the upper and lower positions of the positive electrode interface 6 and the negative electrode interface 7 respectively. A transformer 4 is provided on the right side of the bottom wall of the box body 1, the input end of the transformer 4 is electrically connected to the output end of the single-chip microcomputer 2, and the input end of the positive electrode interface 6 is electrically connected to the output end of the transformer 4. Through the regulation of the single-chip microcomputer 2, the transformer 4 starts to run, and the operator adjusts the output voltage through the transformer 4 according to the actual situation.

[0023] Among them: a return spring 13 is arranged between the upper end of the pressure plate 99 and the top wall of the installation groove 91, and the return spring 13 is sleeved on the outside of the lower side of the sliding column 97. The tension generated by the contraction of the return spring 13 drives the sliding column 97 to move upward and reset through the top block 98.

[0024] The working principle of the transmission and transformation line insulation test device provided by the present invention is as follows: during the use of the transmission and transformation line insulation test device, the operator first rotates the adjustment wheel 11, and the adjustment wheel 11 drives the screw 10 to rotate. During the rotation, the screw 10 drives the mounting plate 87 to move forward through the threaded connection, and the mounting plate 87 drives the adjustment plate 88 to move forward. At this time, the vertical rod 86 slides inside the limit groove and rotates relative to the adjustment groove, so that the adjustment plate 88 drives the horizontal plate 82 to move through the vertical rod 86, and the horizontal plate 82 drives the plug plate 84 to move away from the center of the box body 1 through the fixed plate 83. The operator then opens the door 5 and presses the pressing plate 99, which drives the top block 98 to move downward through the sliding column 97, and the reset spring 13 extends. When the trapezoidal block 96 is pushed by the top block 98, the trapezoidal block 96 drives the connecting plate 93 to move to the side away from the inner center of the installation groove 91 through the transmission plate 95, and the spring 12 contracts. At this time, the spacing between the clamping plates 94 gradually increases, and then the operator inserts the live wire and the neutral wire plugs into the positive interface 6 and the negative interface 7 in turn. When the live wire and the neutral wire are in contact with the positive interface 6 and the negative interface 7, the operator presses the pressing plate 99, and the pressing plate 99 drives the top block 98 to move downward through the sliding column 97, and the reset spring 13 extends. When the trapezoidal block 96 is pushed by the top block 98, the trapezoidal block 96 drives the connecting plate 93 to move to the side away from the inner center of the installation groove 91 through the transmission plate 95, and the spring 12 contracts. At this time, the spacing between the clamping plates 94 gradually increases. Then the operator inserts the live wire and the neutral wire plugs into the positive interface 6 and the negative interface 7 in turn. After the negative terminal 7 is connected, the operator releases the pressure plate 99, and the tension generated by the contraction of the reset spring 13 drives the slide column 97 to move upward and reset through the top block 98, and the thrust generated by the extension of the spring 12 drives the clamping plate 94 to move and reset through the connecting plate 93, and finally the clamping plate 94 contacts the outer arc surface of the conductor, thereby realizing the limit fixation of the conductor, and then disconnecting the power transmission and transformation line to prevent electric shock accidents, and then connecting the live wire and the neutral wire to the insulated part of the power transmission and transformation line. At this time, the positive terminal 6 is electrically connected to the negative terminal 7 through the live wire, the insulated part of the power transmission and transformation line and the neutral wire, so that the positive terminal 6 and the live wire are insulated. , the insulating part of the transmission and transformation line, the neutral line and the negative electrode interface 7 form a closed circuit, and then the leakage current tester 3 is connected in parallel to the insulator to be tested, and then the transformer 4 starts to run through the regulation of the single-chip microcomputer 2. The operator adjusts the output voltage through the transformer 4 according to the actual situation. At this time, the leakage current tester 3 measures the current flowing through the insulator, and the leakage current tester 3 transmits the detected data to the single-chip microcomputer 2 in real time. The purpose of the leakage current test is to measure the unexpected current passing through the insulating material under a certain voltage, that is, the leakage current. Finally, the integrity and aging of the insulating material can be evaluated based on the leakage current data.

[0025] It is worth noting that the single chip microcomputer 2 disclosed in the above embodiment can be STM8S207S8T6C, the leakage current tester 3 can be RK2675Y, and the transformer 4 can be SG-250KVA. The single chip microcomputer 2 controls the leakage current tester 3 and the transformer 4 to work using the methods commonly used in the prior art.

[0026] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A power transmission and transformation line insulation test device, comprising a box body (1), a box door (5) being hingedly connected to the upper end of the box body (1), and a leakage current tester (3) being arranged on the front side of the bottom wall of the box body (1), characterized in that: It also includes a connecting mechanism (8) and a fixing mechanism (9); The connecting mechanism (8) comprises a fixing plate (83), an inserting plate (84) and a socket (85), wherein the socket (85) is respectively arranged at the middle of the left and right ends of the box door (5), and the left and right ends of the box body (1) are respectively provided with a fixing plate (83), and an inserting plate (84) is respectively arranged on the upper side of one end of the fixing plate (83) close to the inner center of the box body (1), and one end of the inserting plate (84) close to the inner center of the box body (1) is respectively plugged into a laterally adjacent socket (85); Fixing mechanism (9): it is arranged inside the box body (1).

2. A power transmission and transformation line insulation test device according to claim 1, characterized in that: It also comprises a single-chip microcomputer (2), the single-chip microcomputer (2) being arranged inside the box (1), the input end of the single-chip microcomputer (2) being electrically connected to an external power supply, and the leakage current tester (3) being electrically connected to the single-chip microcomputer (2) in a bidirectional manner.

3. The power transmission and transformation line insulation test device according to claim 1, characterized in that: The connecting mechanism (8) further comprises a cavity (81), a transverse plate (82), a vertical rod (86), a mounting plate (87) and an adjusting plate (88); the cavity (81) is provided at the lower side of the interior of the box body (1); the middle parts of the left and right walls of the cavity (81) are slidably connected to the transverse plate (82); the upper end of the transverse plate (82) is fixedly connected to a fixing plate (83) on a side away from the interior center of the box body (1); the upper end of the transverse plate (82) is provided with a vertical rod (86) on a side close to the interior center of the box body (1); the mounting plate (87) is slidably connected to the bottom wall of the cavity (81); the upper side of the rear end of the mounting plate (87) is provided with an adjusting plate (88); the upper end of the adjusting plate (88) is provided with a limiting groove; the upper ends of the vertical rods (86) are located inside the limiting grooves adjacent to each other in the vertical direction.

4. A power transmission and transformation line insulation test device according to claim 2, characterized in that: The fixing mechanism (9) comprises a mounting groove (91), a fixing rod (92), a connecting plate (93) and a clamping plate (94); the mounting groove (91) is arranged on the left side inside the box body (1); a fixing rod (92) is arranged on the lower side inside the mounting groove (91); connecting plates (93) are slidably connected to the front and rear sides of the outer arc surface of the fixing rod (92); the connecting plates (93) are slidably connected to the sliding grooves arranged in the middle of the top wall of the mounting groove (91); and clamping plates (94) are respectively arranged on the upper sides of the inner sides of the two connecting plates (93) relative to each other.

5. A power transmission and transformation line insulation test device according to claim 4, characterized in that: The fixing mechanism (9) further comprises a transmission plate (95), a trapezoidal block (96), a sliding column (97), a top block (98) and a pressure plate (99); the transmission plate (95) is arranged at the lower side of the left end of the connecting plate (93); the left end of the transmission plate (95) is provided with a trapezoidal block (96); the sliding column (97) is slidably connected to a sliding hole arranged on the left side of the top wall of the mounting groove (91); the upper end of the sliding column (97) is provided with a pressure plate (99); the lower end of the sliding column (97) is provided with a top block (98); and the inclined surface of the upper end of the trapezoidal block (96) is in contact with the lower surface of the top block (98).

6. The power transmission and transformation line insulation test device according to claim 3, characterized in that: A screw rod (10) is rotatably connected to the lower side of the cavity (81), an adjusting wheel (11) is provided at the front end of the screw rod (10), and the mounting plate (87) is threadedly connected to the front side of the outer arc surface of the screw rod (10) through a threaded hole provided at the lower side of the front end thereof.

7. A power transmission and transformation line insulation test device according to claim 4, characterized in that: A spring (12) is provided between one end of the connecting plate (93) away from the inner center of the box body (1) and the inner wall of the mounting groove (91), and the spring (12) is sleeved on the outside of the outer side of the fixing rod (92).

8. The power transmission and transformation line insulation test device according to claim 4, characterized in that: A positive electrode interface (6) and a negative electrode interface (7) are respectively arranged on the rear side of the bottom wall of the box body (1), the negative electrode interface (7) is located on the right side of the positive electrode interface (6), the connecting plate (93) is located between the positive electrode interface (6) and the negative electrode interface (7), two longitudinally adjacent clamping plates (94) correspond to the upper and lower positions of the positive electrode interface (6) and the negative electrode interface (7), respectively, and a transformer (4) is arranged on the right side of the bottom wall of the box body (1), the input end of the transformer (4) is electrically connected to the output end of the single-chip computer (2), and the input end of the positive electrode interface (6) is electrically connected to the output end of the transformer (4).

9. The power transmission and transformation line insulation test device according to claim 5, characterized in that: A return spring (13) is provided between the upper end of the pressure plate (99) and the top wall of the mounting groove (91), and the return spring (13) is sleeved on the outside of the lower side of the sliding column (97).

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