Current transformer assembling component of gas insulation neutral point grounding device

Abstract

The utility model discloses a gas insulation neutral point grounding device current transformer assembling component, and particularly relates to the transformer engineering application field, the gas insulation neutral point grounding device current transformer assembling component comprises an assembling part, the assembling part is used for monitoring current and protecting a system, the assembling part comprises a shielding cylinder, a current transformer body is sleeved on the outer side of the shielding cylinder, a cylinder body is sleeved on the outer side of the current transformer body, and the cylinder body is sleeved on the outer side of the shielding cylinder. A barrel cover is arranged at the top of the barrel body, and a connecting piece is arranged between the barrel body and the barrel cover and used for disassembling and assembling the barrel cover. The connecting piece is matched with the fixing piece and the insulating paper board, so that the current transformer body can be secondarily limited, the stability of the current transformer body is improved, the current transformer body can be protected, the current transformer body is prevented from being exposed outside, the service life of the current transformer body is prolonged, and the service life of the current transformer body is prolonged. And meanwhile, the current transformer body can be quickly disassembled and assembled, and the disassembling and assembling efficiency of the current transformer body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer engineering application technical field more specifically, the utility model relates to a kind of gas insulation neutral grounding device current transformer assembly components. BACKGROUND

[0002] The neutral grounding device of existing outdoor high-voltage substation needs to be set up a stand column beside the transformer, to install the neutral point complete device on the stand column, and then connect it to the transformer neutral point bushing through overhead flexible line. During the construction process, stand column foundation and related foundation screws need to be pre-buried. In addition, the overhead connection flexible line between the neutral point complete device and the transformer is completely exposed in the air, which requires a large insulation distance and is easily affected by environmental factors to cause discharge in some severe rain and snowstorm weather.

[0003] Most of the current neutral grounding device transformers use external current transformers. The basic working principle of the current transformer is based on the law of electromagnetic induction, which states that when the magnetic flux through a closed circuit changes, an electromotive force will be generated in the circuit. In the current transformer, the current on the primary side (large current) will generate an induced current proportional to it on the secondary side (small current).

[0004] However, in actual use, due to the high cost of the transformer, and due to the external assembly of the transformer, it is easily damaged by various harsh environments and small animals. Therefore, an internal current transformer is needed to assemble the transformer in a closed environment to achieve a simple and secure current transformer assembly method. UTILITY MODEL CONTENTS

[0005] The gas insulation neutral grounding device current transformer assembly component provided by the utility model solves the problem that the existing transformer is high in cost and is easily damaged by various harsh environments and small animals due to external assembly.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a gas insulation neutral grounding device current transformer assembly component, including an assembly component, the assembly component is used for monitoring current and protecting system, the assembly component includes a shielding cylinder, a current transformer body is sleeved outside the shielding cylinder, a cylinder body is sleeved outside the current transformer body, a cylinder cover is arranged at the top of the cylinder body, a connecting piece is arranged between the cylinder body and the cylinder cover, and the connecting piece is used for disassembling and assembling the cylinder cover;The connecting piece includes two latches, the two latches are symmetrically arranged on the side surface of the cylinder cover, the latch is movably connected with the cylinder cover, the latch is inserted through the cylinder cover and the cylinder body, and the latch moves towards the inside or outside of the cylinder cover to control the connection or separation of the cylinder body and the cylinder cover.

[0007] In a preferred embodiment, the side of the barrel cover is symmetrically provided with a hole, and two plugs are respectively arranged in the hole; the two sides of the barrel body are provided with a plug hole corresponding to the hole; the plug is inserted into the plug hole; the end of the plug away from the barrel cover is provided with a spring; and the two ends of the spring are fixedly connected with the barrel cover and the plug respectively.

[0008] In a preferred embodiment, the bottom of the shielding cylinder is provided with a lower flange, the top of the shielding cylinder is provided with a middle flange, and the top of the middle flange is detachably provided with an upper flange; a fixing member is arranged between the upper flange and the current transformer body, and the fixing member is used for limiting the current transformer body; the fixing member comprises a pressing plate, the pressing plate is arranged on the current transformer body and is sleeved on the outer side of the shielding cylinder, two adjusting cylinders are arranged on the pressing plate, an adjusting rod corresponding to the adjusting cylinder is arranged on the upper flange, the lower end of the adjusting rod is arranged in the adjusting cylinder and is threadedly connected with the adjusting cylinder, and the rotation of the adjusting rod controls the movement of the adjusting cylinder, so that the position of the pressing plate is adjusted.

[0009] In a preferred embodiment, the upper flange is provided with a through hole corresponding to the adjusting rod, and the upper flange is further provided with an adjusting seat which is communicated with the through hole; a rotating ring is movably arranged in the adjusting seat; the adjusting rod is fixedly arranged in the rotating ring; and the rotating ring is embedded in the adjusting seat and is provided with a plurality of sliding beads between the adjusting seat.

[0010] In a preferred embodiment, an insulating paper board is arranged between the shielding cylinder and the current transformer body, and the insulating paper board is used for adjusting the gap between the shielding cylinder and the current transformer body.

[0011] In a preferred embodiment, a plurality of clamping blocks are symmetrically arranged on the middle flange, and the upper flange is provided with a clamping groove corresponding to each clamping block; and the plurality of clamping blocks are clamped with the clamping grooves.

[0012] In a preferred embodiment, the side of the barrel body is provided with a connecting hole, and a wiring board is arranged on the connecting hole and is electrically connected with the current transformer body.

[0013] In a preferred embodiment, the barrel body and the current transformer body are both arranged on the lower flange, and the bottom of the barrel body is detachably connected with the lower flange.

[0014] The utility model discloses beneficial effect lies in:

[0015] 1, the utility model discloses a connecting piece is set up, and the plug is pulled to the outside of the barrel cover, and the spring is stretched, and the plug is separated from the plug hole, and the connection between the barrel cover and the barrel body is released, the barrel cover is disassembled, and vice versa, the plug is pulled to the outside of the barrel cover first, and then the inside of the barrel cover is completely attached to the barrel body, and the plug is inserted into the plug hole by pushing the plug to the inside of the barrel cover, so that the barrel cover is installed, and when the current transformer body needs to be disassembled, the barrel cover can be disassembled, the top of the barrel body is opened, and the inside of the barrel body can be directly operated, and the barrel body does not need to be taken off from the lower flange as a whole.

[0016] 2、The utility model discloses a fixed part and insulating paper board are set up, and a certain amount of insulating paper board is put between the shielding cylinder and the current transformer body, and the gap between the current transformer body and the shielding cylinder is reduced, and the current transformer body is primarily fixed, and after the upper flange is installed on the middle flange, the rotation adjusting rod cooperates the adjusting cylinder and drives the pressing plate to move down, and the pressing plate contacts the current transformer body, and the top of the current transformer body is fixed secondly, thereby can increase the stability of the current transformer body. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is whole structure schematic diagram of the utility model.

[0018] Figure 2 It is side view structure schematic diagram of the utility model.

[0019] Figure 3 It is cylinder cover and cylinder body connection structure schematic diagram of the utility model.

[0020] Figure 4 It is upper flange and pressing plate connection structure schematic diagram of the utility model.

[0021] Figure 5 It is adjusting seat and swivel ring connection structure schematic diagram of the utility model.

[0022] Figure 6 It is middle flange and upper flange connection structure schematic diagram of the utility model.

[0023] Figure 7 It is assembly assembling method structure schematic diagram of the utility model.

[0024] The figure mark is: 1, assembly piece;10, shielding cylinder;11, current transformer body;12, cylinder body;13, cylinder cover;14, connecting piece;140, bolt;141, insertion hole;142, spring;15, lower flange;16, middle flange;17, upper flange;18, fixed part;180, pressing plate;181, adjusting cylinder;182, adjusting rod;183, adjusting seat;184, swivel ring;185, slide bead;19, insulating paper board;20, clamping block;21, wiring board. DETAILED DESCRIPTION

[0025] It is necessary to point out here that the following specific embodiments are only used to further illustrate the application, and can not be understood as limiting the scope of the application, and the skilled in the art can make some non-essential improvements and adjustments to the application according to the above application content.

[0026] Refer to the description attached Figures 1 to 7The utility model provides a kind of gas insulation neutral point grounding device current transformer assembly assembly, including assembly 1, assembly 1 is used to monitor current and protect system, assembly 1 includes shielding cylinder 10, current transformer body 11 is sleeved outside shielding cylinder 10, cylinder body 12 is sleeved outside current transformer body 11, cylinder cover 13 is equipped at the top of cylinder body 12, connecting piece 14 is equipped between cylinder body 12 and cylinder cover 13, and connecting piece 14 is used to dismount cylinder cover 13;Connecting piece 14 includes two latches 140, two latches 140 are symmetrically arranged on the side of cylinder cover 13, latch 140 is movably connected with cylinder cover 13, latch 140 is inserted with cylinder body 12 through cylinder cover 13, and latch 140 moves to the inside or outside of cylinder cover 13, for controlling that cylinder body 12 is connected or separated from cylinder cover 13.

[0027] In the above embodiment, the gas insulation neutral point grounding device is a device used in a gas insulated switchgear, mainly used to connect the neutral point of a power system to the ground to improve the stability of the system and limit overvoltage in case of failure to protect the equipment from damage.

[0028] It should be noted that the cylinder body 12 is sleeved outside the current transformer body 11, and the bottom thereof is connected to the lower flange 15 by screws, and then the cylinder cover 13 is installed on the cylinder body 12, sealing the current transformer body 11 in the cylinder body 12, protecting the current transformer body 11 and improving the safety of the current transformer body 11.

[0029] Since the cylinder cover 13 has a double-layer structure, the cylinder cover 13 contacts the outer and inner surfaces of the cylinder body 12, and a sealing ring is provided at the contact position of the top of the cylinder body 12, which can eliminate the gap between the cylinder cover 13 and the cylinder body 12, making the cylinder body 12 cooperate with the cylinder cover 13 in a sealed state.

[0030] When it is necessary to disassemble the cylinder body 12, the latch 140 is moved to release the fixation between the cylinder cover 13 and the cylinder body 12, and then the top of the cylinder body 12 can be opened without the need to remove the cylinder body 12 as a whole from the lower flange 15, which is simple to operate and can quickly open or close the cylinder body 12.

[0031] Further, the side surface of the cylinder cover 13 is symmetrically provided with a hole, and the two latches 140 are located inside the hole respectively, the two side surfaces of the cylinder body 12 are provided with a corresponding insertion hole 141, the latch 140 is inserted with the insertion hole 141, and the end of the latch 140 away from the cylinder cover 13 is sleeved with a spring 142, and the two ends of the spring 142 are fixedly connected with the cylinder cover 13 and the latch 140 respectively.

[0032] It should be noted that the latch 140 is pulled to the outside of the cylinder cover 13, which drives the spring 142 to stretch, moves the latch 140 out of the insertion hole 141, releases the connection between the latch 140 and the insertion hole 141, and releases the connection between the cylinder cover 13 and the cylinder body 12, so that the cylinder cover 13 can be disassembled.

[0033] Conversely, when installing between the barrel cover 13 and the barrel 12, first pull the plug 140 to the outside of the barrel cover 13, then place the barrel cover 13 on the barrel 12, and when the inner wall is completely attached to the barrel 12, push the plug 140 to the inside of the barrel cover 13, so that the plug 140 is clamped with the socket 141, thereby limiting the installation between the barrel cover 13 and the barrel 12.

[0034] Further, referring to the description attached Figure 1 And Figure 4 The bottom of the shielding cylinder 10 is provided with a lower flange 15, the top of the shielding cylinder 10 is provided with a middle flange 16, and the top of the middle flange 16 is detachably provided with an upper flange 17. The upper flange 17 and the current transformer body 11 are provided with a fixing piece 18 for limiting the current transformer body 11; the fixing piece 18 includes a pressing plate 180, which is located on the current transformer body 11 and is sleeved on the outside of the shielding cylinder 10. Two adjusting cylinders 181 are provided on the pressing plate 180, and adjusting rods 182 corresponding to the adjusting cylinders 181 are provided on the upper flange 17. The lower end of the adjusting rod 182 is located inside the adjusting cylinder 181 and is threadedly connected with the adjusting cylinder 181. The rotation of the adjusting rod 182 controls the movement of the adjusting cylinder 181, thereby adjusting the position of the pressing plate 180.

[0035] In the above embodiment, the shielding cylinder 10 is fixedly connected with the lower flange 15 and the middle flange 16.

[0036] It should be noted that the upper flange 17 is installed on the middle flange 16, and the pressing plate 180 is sleeved on the shielding cylinder 10, so that the pressing plate 180 is located above the current transformer body 11. Then rotate the adjusting rod 182, so that the bottom of the adjusting rod 182 rotates inside the adjusting cylinder 181, driving the adjusting cylinder 181 to move downward along the adjusting rod 182, and in turn driving the pressing plate 180 to move downward, so that the pressing plate 180 contacts the current transformer body 11, thereby achieving extrusion and fixation of the current transformer body 11, and increasing the stability of the current transformer body 11 outside the shielding cylinder 10.

[0037] When the current transformer body 11 needs to be disassembled, first disassemble the barrel cover 13, open the barrel 12, separate the upper flange 17 from the middle flange 16, and remove the pressing plate 180 from the current transformer body 11, so as to release the fixation of the current transformer body 11, thereby facilitating the disassembly of the current transformer body 11.

[0038] The bottom of the adjusting rod 182 is provided with a limiting plate, and the limiting plate is located inside the adjusting cylinder 181, which can limit the adjusting rod 182 and prevent the adjusting rod 182 from falling out of the adjusting cylinder 181.

[0039] Because the bottom of the adjusting cylinder 181 is fixedly connected with the pressing plate 180, when the adjusting cylinder 181 is rotated alone, the adjusting cylinder 181 will not rotate synchronously, and the pressing plate 180 will not rotate.

[0040] Further, the upper flange 17 is provided with a through hole corresponding to the adjusting rod 182, and the upper flange 17 is further provided with an adjusting seat 183 in communication with the through hole. The adjusting seat 183 is movably provided with a swivel ring 184 inside, and the adjusting rod 182 is fixedly arranged inside the swivel ring 184. The swivel ring 184 is embedded in the adjusting seat 183, and a plurality of sliding beads 185 are arranged between the swivel ring 184 and the adjusting seat 183.

[0041] It should be noted that when the adjusting rod 182 rotates, the swivel ring 184 rotates in the adjusting seat 183, and the sliding beads 185 rotate between the swivel ring 184 and the adjusting seat 183. The sliding beads 185 can reduce the friction between the swivel ring 184 and the adjusting seat 183.

[0042] By fixing the adjusting rod 182 with the swivel ring 184 and rotating the swivel ring 184 in the adjusting seat 183, the adjusting rod 182 can be limited in position, so that the adjusting rod 182 can rotate horizontally on the adjusting seat 183 without moving position.

[0043] Further, referring to the drawings attached in the specification, Figure 1 An insulating paper board 19 is arranged between the shielding cylinder 10 and the current transformer body 11, and the insulating paper board 19 is used to adjust the gap between the shielding cylinder 10 and the current transformer body 11.

[0044] It should be noted that after the current transformer body 11 is installed outside the shielding cylinder 10, the insulating paper board 19 is installed between the shielding cylinder 10 and the current transformer body 11, and the number of the insulating paper board 19 is changed to reduce the gap between the shielding cylinder 10 and the current transformer body 11, so that the current transformer body 11 is stably sleeved on the shielding cylinder 10, thereby fixing the current transformer body 11 and avoiding the current transformer body 11 from shaking.

[0045] Further, referring to the drawings attached in the specification, Figure 6 A plurality of clamping blocks 20 are symmetrically arranged on the center of the middle flange 16, and the upper flange 17 is provided with a clamping groove corresponding to each clamping block 20. The plurality of clamping blocks 20 are clamped with the clamping grooves.

[0046] It should be noted that after the upper flange 17 is placed on the middle flange 16, the clamping blocks 20 on the middle flange 16 are placed in the clamping grooves on the surface of the upper flange 17, and then the upper flange 17 is rotated to make the clamping blocks 20 and the clamping grooves misaligned, thereby fixing the upper flange 17 and the middle flange 16.

[0047] Since the card block 20 is located in the L-shaped structure, and the card slot size matches the moving range of the card block 20, the card block 20 and the card slot can be clamped.

[0048] Further, referring to the drawings Figure 1 The side of the barrel 12 is provided with a connecting hole, and the connecting hole is provided with a wiring board 21 which is electrically connected with the current transformer body 11.

[0049] It should be noted that the signal can be transmitted to the secondary control box through the wiring board 21 to realize current monitoring.

[0050] Further, referring to the drawings Figure 1 The barrel 12 and the current transformer body 11 are located on the lower flange 15, and the bottom of the barrel 12 is detachably connected with the lower flange 15.

[0051] It should be noted that the barrel 12 can be taken off from the lower flange 15 by separating the bottom of the barrel 12 from the lower flange 15.

[0052] Further, referring to the drawings Figure 7 The assembly 1 is assembled by the following steps:

[0053] Step one: install the shielding barrel 10 on the lower flange 15, and then set the current transformer body 11 on the shielding barrel 10, and then put the insulating paper board 19 between the current transformer body 11 and the shielding barrel 10 to reduce the gap therebetween and preliminarily limit the current transformer body 11;

[0054] Step two: place the upper flange 17 on the middle flange 16, and at the same time, set the pressing plate 180 on the shielding barrel 10, and then rotate the upper flange 17 to make the card slot clamped with the card block 20, and then install the upper flange 17;

[0055] Step three: rotate the adjusting rod 182 to drive the rotating ring 184 to rotate in the adjusting seat 183, and at the same time, rotate the lower end of the adjusting rod 182 in the adjusting barrel 181 to make the adjusting barrel 181 move along the adjusting rod 182 to adjust the distance between the pressing plate 180 and the upper flange 17, and then make the pressing plate 180 contact with the surface of the current transformer body 11 to secondarily limit the current transformer body 11;

[0056] Step four: install the barrel cover 13 on the barrel 12, and then set the barrel 12 on the current transformer body 11, and then connect the bottom of the barrel 12 with the lower flange 15 to seal and protect the current transformer body 11;

[0057] Step five: connect the external equipment with the wiring board 21 to make the current transformer body 11 run, so as to monitor the current of the external equipment.

[0058] It should be noted that by the above installation method, not only the current transformer body 11 can be limited twice, the stability of the current transformer body 11 is improved, but also the current transformer body 11 can be protected, the current transformer body 11 is prevented from being exposed to the outside world, and the current transformer body 11 can be quickly disassembled and assembled, and the installation efficiency of the current transformer body 11 is improved.

[0059] Working principle: first, the current transformer body 11 is sleeved on the shielding cylinder 10, and the insulating paper board 19 is placed between the current transformer body 11 and the shielding cylinder 10, so as to reduce the gap between the current transformer body 11 and the shielding cylinder 10, and make the current transformer body 11 stably sleeved on the shielding cylinder 10.

[0060] Then, the upper flange 17 is rotatably installed on the middle flange 16, and the adjusting rod 182 is rotatably adjusted to cooperate with the adjusting cylinder 181 to drive the pressing plate 180 to move downward, so that the pressing plate 180 is in contact with the current transformer body 11, the top of the current transformer body 11 is extruded, the current transformer body 11 is fixed, and the stability of the current transformer body 11 is increased.

[0061] Then, the cylinder body 12 is sleeved outside the current transformer body 11, the bottom thereof is connected with the lower flange 15, and the cylinder cover 13 is installed on the cylinder body 12, so that the cylinder body 12 forms a sealed space, and the current transformer body 11 is protected, thereby prolonging the service life of the current transformer body 11.

[0062] Finally, when the current transformer body 11 needs to be disassembled, the cylinder cover 13 can be disassembled first, the top of the cylinder body 12 is opened, the upper flange 17 is separated from the middle flange 16, and the current transformer body 11 is leaked, so that the current transformer body 11 can be disassembled and assembled, the operation is simple, the current transformer body 11 can be quickly disassembled and assembled, and the cylinder body 12 does not need to be taken off from the lower flange 15.

[0063] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.

Claims

1. A gas insulated neutral grounding device current transformer assembly comprising an assembly (1) for monitoring the current and protecting the system, characterized in that: The assembly (1) comprises a shielding cylinder (10), the shielding cylinder (10) is externally sleeved with a current transformer body (11), the current transformer body (11) is externally sleeved with a cylinder body (12), the cylinder body (12) is provided with a cylinder cover (13) at the top, a connecting piece (14) is arranged between the cylinder body (12) and the cylinder cover (13), and the connecting piece (14) is used for dismounting and mounting the cylinder cover (13); The connecting piece (14) comprises two latches (140), the two latches (140) are symmetrically arranged on the side of the cylinder cover (13), the latches (140) are movably connected with the cylinder cover (13), the latches (140) are inserted into the cylinder cover (13) and the cylinder body (12), and the latches (140) are moved towards the inside or outside of the cylinder cover (13) to control the connection or separation of the cylinder body (12) and the cylinder cover (13).

2. A gas insulated neutral grounding device current transformer assembly according to claim 1, characterized in that: The cylinder cover (13) is symmetrically provided with a hole on the side, the two latches (140) are located in the hole respectively, the cylinder body (12) is provided with a bushing (141) corresponding to the hole on the two side surfaces, the latches (140) are inserted into the bushing (141), a spring (142) is sleeved on the end of the latch (140) away from the cylinder cover (13), and the two ends of the spring (142) are fixedly connected with the cylinder cover (13) and the latch (140) respectively.

3. A gas insulated neutral grounding device current transformer assembly according to claim 2, characterized in that: The bottom of the shielding cylinder (10) is provided with a lower flange (15), the top of the shielding cylinder (10) is provided with a middle flange (16), the top of the middle flange (16) is detachably provided with an upper flange (17), a fixing piece (18) is arranged between the upper flange (17) and the current transformer body (11), and the fixing piece (18) is used for limiting the current transformer body (11). The fixing piece (18) comprises a pressing plate (180), the pressing plate (180) is located on the current transformer body (11) and is sleeved on the outside of the shielding cylinder (10), two adjusting cylinders (181) are arranged on the pressing plate (180), an adjusting rod (182) corresponding to the adjusting cylinder (181) is arranged on the upper flange (17), the lower end of the adjusting rod (182) is located in the adjusting cylinder (181) and is threadedly connected with the adjusting cylinder (181), and the rotation of the adjusting rod (182) controls the movement of the adjusting cylinder (181), so that the position of the pressing plate (180) is adjusted.

4. A gas insulated neutral grounding device current transformer assembly according to claim 3, characterized in that: The upper flange (17) is provided with a through hole corresponding to the adjusting rod (182), the upper flange (17) is further provided with an adjusting seat (183), the adjusting seat (183) is communicated with the through hole, a rotating ring (184) is movably arranged in the adjusting seat (183), the adjusting rod (182) is fixedly arranged in the rotating ring (184), the rotating ring (184) is embedded in the adjusting seat (183), and a plurality of sliding beads (185) are arranged between the rotating ring (184) and the adjusting seat (183).

5. A gas insulated neutral grounding device current transformer assembly according to claim 4, characterized in that: The shielding cylinder (10) and the current transformer body (11) are provided with an insulating paper board (19), and the insulating paper board (19) is used for adjusting the gap between the shielding cylinder (10) and the current transformer body (11).

6. A gas insulated neutral grounding device current transformer assembly according to claim 5, characterized in that: A plurality of clamping blocks (20) are symmetrically arranged on the upper flange (16), and the upper flange (17) is provided with a clamping groove corresponding to each clamping block (20), and each clamping block (20) is clamped with the clamping groove.

7. A gas insulated neutral grounding device current transformer assembly according to claim 6, characterized in that: The side of the cylinder (12) is provided with a connecting hole, and the connecting hole is provided with a wiring board (21) electrically connected with the current transformer body (11).

8. A gas insulated neutral grounding device current transformer assembly according to claim 7, characterized in that: The cylinder (12) and the current transformer body (11) are located on the lower flange (15), and the bottom of the cylinder (12) is detachably connected with the lower flange (15).

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