Support for fixing Rogowski coil

Abstract

A support for fixing a Rogowski coil relates to the technical field of measuring instruments. The problem that an existing Rogowski coil is very troublesome to mount and dismount is solved. The device comprises at least two detachably connected bases, the two bases are connected to form an installation disc installed on a tested conductor, each base is movably provided with an operation plate and a plurality of cover plates which are uniformly distributed along the circumferential direction, the plurality of cover plates are respectively connected with the operation plate through transmission assemblies, the transmission assemblies are in one-to-one correspondence with the cover plates, and the transmission assemblies are in one-to-one correspondence with the cover plates. All the transmission assemblies are connected with the operation panel. The cover plates can be driven to move towards the opening of the annular groove by moving the operation plate until the cover plates cover the opening of the annular groove, so that the Rogowski coil in the annular groove is fixed, the plurality of cover plates on each base can rotate only by moving one operation plate, each cover plate does not need to be manually controlled, the mounting and dismounting are faster, and the mounting efficiency is improved. The use is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring instruments, in particular to a bracket for fixing a Rogowski coil. Background Art

[0002] In modern power systems, Rogowski coils have been widely used to measure various changing currents. As a current measurement sensing unit, they have become a new direction in the development of power transformers due to their advantages such as wide measurement range, good insulation performance, wide bandwidth, good linearity, no iron core, and no magnetic saturation phenomenon.

[0003] When traditionally installed, a Rogowski coil is directly wound around the conductor being measured. If the temperature of the conductor being measured is too high, the test accuracy of the Rogowski coil will be affected. Therefore, a bracket is generally used to fix the Rogowski coil so that the Rogowski coil and the conductor being measured are separated from each other to provide a certain gap. For example, patent number CN204925166U, entitled "Rogowski Coil Mounting Bracket for Secondary Current Detection of Arc Furnace Transformer," has multiple sub-mounting plates connected by insulating fasteners to form an annular mounting disk. The sub-mounting plates are provided with multiple coil fixing holes. Self-locking plastic cable ties are passed through the coil fixing holes to mount the Rogowski coil on the annular mounting disk. Although the bracket creates a certain gap between the Rogowski coil and the conductor being measured, the Rogowski coil needs to be fixed by workers one by one with the plastic cable ties. Due to the large number of fixing points, installation and removal are very troublesome and inconvenient to use.

[0004] In summary, the existing Rogowski coil has the problem of being very troublesome to install and disassemble. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the installation and disassembly of the Rogowski coil are very troublesome, and further provide a bracket for fixing the Rogowski coil.

[0006] The technical solution of the utility model is: a bracket for fixing a Rogowski coil, comprising: at least two detachably connected bases, the two bases being connected to form a mounting plate mounted on a conductor to be measured;

[0007] The mounting plate is provided with an annular groove coaxial with the conductor to be measured, and the annular groove is used to accommodate the Rogowski coil;

[0008] An operating plate and a plurality of cover plates evenly distributed along the circumference are movably provided on each of the bases. The plurality of cover plates are respectively connected to the operating plate through a transmission assembly. By moving the operating plate, the plurality of cover plates are simultaneously driven to move toward the opening of the annular groove, thereby fixing the Rogowski coil.

[0009] Furthermore, the operating plate is slidably mounted on the base, and the operating plate slides in the axial direction. The plurality of cover plates are rotatably mounted on the base, and the plurality of cover plates rotate in the radial direction.

[0010] Furthermore, a rotating shaft is provided on the base, and the cover plate is mounted on the rotating shaft. The cover plate covers the opening of the annular groove as the rotating shaft rotates.

[0011] Furthermore, the transmission assembly includes: a gear and a rack that mesh with each other, the gear is sleeved on the rotating shaft, and the rack is fixed on the operating panel.

[0012] Furthermore, the base is provided with a guide member extending outward in the axial direction, and the operating plate is provided with an avoidance channel for passing through the guide member.

[0013] Furthermore, the guide member is a round rod structure, the round rod structure has at least two circumferentially distributed ones, and the avoidance channel groove is a circular channel.

[0014] Furthermore, it further comprises: an elastic member connected between the operating plate and the base, wherein the elastic member has a pulling force that brings the operating plate and the base closer to each other.

[0015] Furthermore, the elastic member includes: a first magnetic block and a second magnetic block that attract each other, the first magnetic block is mounted on the operating panel, and the second magnetic block is mounted on the base.

[0016] Furthermore, two adjacent bases are plug-connected.

[0017] Furthermore, one of the bases is provided with two symmetrically distributed slots, the inner walls of the slots are provided with friction plates, and the other base is provided with an insert block for matching with the slots.

[0018] Compared with the prior art, the present invention has the following effects:

[0019] 1. The bracket for fixing the Rogowski coil provided by the utility model can drive the cover plate to move toward the opening of the annular groove by moving the operating panel until it covers the opening of the annular groove, thereby completing the fixation of the Rogowski coil in the annular groove. The rotation of multiple cover plates on each base can be achieved by moving only one operating panel, without the need to manually control each cover plate. The installation and removal are faster and the use is very convenient.

[0020] 2. The utility model provides a bracket for fixing the Rogowski coil. The operating plate slides axially to drive the cover plate to rotate, so that the cover plate covers the opening of the annular groove. The operating plate is driven by sliding and is not affected by gravity, making control easier and more accurate.

[0021] 3. The bracket for fixing the Rogowski coil provided by the present invention has an operating plate that moves toward the base under the action of the elastic member, thereby keeping the cover in a closed state without manual fixation, resulting in a better use effect.

[0022] 4. The bracket for fixing the Rogowski coil provided by the present invention is connected by plugging between the two bases, and no other tools are needed for connection, which not only makes the connection more convenient, but also avoids the loss of other tools and saves usage costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the bracket for fixing the Rogowski coil of the present invention;

[0024] Figure 2 yes Figure 1 Explosion diagram of

[0025] Figure 3 yes Figure 2 sectional view of

[0026] Figure 4 yes Figure 1 Schematic diagram of the other side;

[0027] Figure 5 yes Figure 4 Explosion diagram of

[0028] Figure 6 yes Figure 2 Enlarged view of area A in the middle;

[0029] Figure 7 yes Figure 3 Magnified view of area B.

[0030] In the figure: 1. Base; 2. Annular groove; 3. Operating panel; 4. Cover; 5. Transmission assembly; 6. Rotating shaft; 7. Gear; 8. Rack; 9. Guide member; 10. Avoidance channel; 11. Elastic member; 12. First magnetic block; 13. Second magnetic block; 14. Slot; 15. Friction plate; 16. Insert block. DETAILED DESCRIPTION

[0031] Specific implementation method 1: Combination Figure 1 、 Figure 2 、 Figure 5 This embodiment will be described. This embodiment includes at least two detachably connected bases 1. In this embodiment, the number of bases 1 is two. Of course, this is not restrictive, and the number of bases 1 can be flexibly adjusted according to actual conditions. The mounting plate has an annular groove 2 coaxial with the conductor to be measured. The annular groove 2 is used to accommodate the Rogowski coil. When the two bases 1 are connected, a mounting plate is formed to be mounted on the conductor to be measured.

[0032] An operating panel 3 and a plurality of cover panels 4 evenly distributed along the circumferential direction are movably provided on each base 1. The number of the operating panel 3 is one and the number of the cover panels 4 is two. The number of the cover panels 4 is not fixed and more can be provided, so there are more fixing points and a better fixing effect. The plurality of cover panels 4 are respectively connected to the operating panel 3 through a transmission assembly 5. The transmission assembly 5 corresponds to the cover panels 4 one by one. All the transmission assemblies 5 are connected to the operating panel 3. By moving the operating panel 3, the plurality of cover panels 4 are simultaneously driven to move toward the outlet of the annular groove 2, thereby achieving fixation of the Rogowski coil.

[0033] The bracket for fixing the Rogowski coil in this embodiment can drive the cover plate 4 to move toward the opening of the annular groove 2 by moving the operating panel 3 until it covers the opening of the annular groove 2, thereby completing the fixation of the Rogowski coil in the annular groove 2. The rotation of multiple cover plates 4 on each base 1 can be achieved by simply moving one operating panel 3, without the need to manually control each cover plate 4. The installation and removal are faster and more convenient to use.

[0034] Specific implementation method 2: Combination Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 To describe this embodiment, the operating panel 3 of this embodiment is slidably mounted on the base 1. The operating panel 3 slides axially. Multiple cover plates 4 are rotatably mounted on the base 1. Multiple cover plates 4 rotate radially. The operating panel 3 slides axially, thereby driving the cover plates 4 to rotate, so that the cover plates 4 cover the opening of the annular groove 2. The operating panel 3 is driven by sliding, which is not affected by gravity, making control easier and more precise. Of course, the above description is not restrictive. As an alternative embodiment, the operating panel 3 can also be rotatably mounted on the base 1, and the cover plates 4 can be slidably mounted on the base 1. The rotation of the operating panel 3 can drive the cover plates 4 to slide. The other components and connection relationships are the same as those of the first embodiment.

[0035] Specific implementation method three: Combination Figure 2 、 Figure 6 To describe this embodiment, the base 1 is provided with a rotating shaft 6, located outside the base 1. Rectangular plates are connected to both ends of the rotating shaft 6 and fixed to the base 1 to enable the rotating shaft 6 to be mounted. A cover plate 4 is mounted on the rotating shaft 6, and as the rotating shaft 6 rotates, the cover plate 4 covers the opening of the annular groove 2. Of course, the above description is not restrictive. As an alternative embodiment, a rotating shaft 6 can be provided on each side of the cover plate 4, and a circular groove for inserting the rotating shaft 6 can be provided on the base 1. Other components and connection relationships are the same as those of the second embodiment.

[0036] Specific implementation method four: Combination Figure 2 、 Figure 6To describe this embodiment, the transmission assembly 5 comprises a meshing gear 7 and rack 8. Gear 7 is sleeved on a rotating shaft 6, and rack 8 is fixed to the operating panel 3. The base 1 has rectangular slots extending through both sides. Rack 8 meshes with gear 7 after passing through the slots, and the linear movement of rack 8 drives gear 7 to rotate. Of course, the above description is not restrictive. As an alternative embodiment, the transmission assembly 5 can also be a multi-link mechanism. Other components and connections are the same as those in the third embodiment.

[0037] Specific implementation method five: Combination Figure 4 、 Figure 5 To explain this embodiment, the base 1 of this embodiment has a guide member 9 extending axially outward, and the operating panel 3 has an escape channel 10 for passing through the guide member 9. The cooperation between the guide member 9 and the escape channel 10 enables the sliding of the operating panel 3. Of course, the above description is not restrictive. As an alternative embodiment, the guide member 9 can also be provided on the operating panel 3, and the escape channel 10 can be provided on the base 1 for passing through the guide member 9. The other components and connection relationships are the same as those of the second embodiment.

[0038] Specific implementation method six: combination Figure 4 、 Figure 5 To explain this embodiment, the guide member 9 is a circular rod structure with at least two circumferentially distributed circular rods, and the avoidance channel 10 is a circular channel. In this embodiment, there are two circular rods, and these two structures can guide the operating panel 3. Of course, the above description is not restrictive. As an alternative embodiment, the guide member 9 can also be an arc structure, and the avoidance channel 10 can also be an arc-shaped channel. Other components and connections are the same as those in the fifth embodiment.

[0039] Specific implementation method seven: combination Figure 4 This embodiment further includes an elastic member 11 connected between the operating panel 3 and the base 1. The elastic member 11 exerts a pulling force that pulls the operating panel 3 and the base 1 toward each other. The operating panel 3 moves toward the base 1 under the action of the elastic member 11, thereby maintaining the cover 4 in the closed position. This eliminates the need for manual fastening and improves user experience. The remaining components and connections are the same as those in any of the first to sixth embodiments.

[0040] Specific implementation method eight: combination Figure 4To explain this embodiment, the elastic member 11 comprises a first magnetic block 12 and a second magnetic block 13 that attract each other. The first magnetic block 12 is mounted on the operating panel 3, and the second magnetic block 13 is mounted on the base 1. The magnetic forces of the first and second magnetic blocks 12, 13 are opposite, thus generating an attractive force between them. Of course, the above description is not restrictive. As an alternative embodiment, the elastic member 11 can also be a spring connected between the operating panel 3 and the base 1. The remaining components and connections are the same as those in Specific Embodiment 7.

[0041] Specific implementation method nine: combination Figure 3 、 Figure 7 This embodiment describes a plug-and-socket connection between two adjacent bases 1. This connection requires no tools, making it more convenient and avoiding the loss of tools, thus saving costs. Of course, the above description is not restrictive. As an alternative embodiment, the two bases 1 can also be connected using tools such as bolts. The remaining components and connection relationships are the same as those in any of the first to sixth embodiments.

[0042] Specific implementation method ten: Combination Figure 3 、 Figure 7 To explain this embodiment, one base 1 has two symmetrically distributed slots 14, with friction plates 15 positioned on the inner walls of slots 14. The other base 1 is equipped with an insert 16 that mates with slots 14. Inserting insert 16 into slots 14 generates friction with friction plates 15, connecting the two bases 1 through this friction. Of course, the above description is not restrictive. As an alternative embodiment, magnetic plates can be positioned on both insert 16 and slots 14 to achieve connection between the bases 1 through magnetic attraction. Other components and connection relationships are the same as those in the ninth embodiment.

[0043] The method of using this embodiment is as follows: first, the two bases 1 are respectively installed on the conductor to be measured, and then the plug 16 is inserted into the slot 14 to complete the connection between the two bases 1. Then, the Rogowski coil is placed in the annular groove 2, and the operating panel 3 is pushed toward the base 1. The operating panel 3 drives the rack 8 to move, and the rack 8 drives the gear 7 to rotate, thereby driving the rotating shaft 6. The rotating shaft 6 drives the cover plate 4 to cover the opening of the annular groove 2, thereby completing the fixation of the Rogowski coil.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A bracket for fixing a Rogowski coil, comprising: At least two detachably connected bases (1), the two bases (1) being connected to form a mounting plate mounted on a conductor to be measured; The invention is characterized in that the mounting plate has an annular groove (2) coaxial with the conductor to be measured, and the annular groove (2) is used to accommodate the Rogowski coil; An operating plate (3) and a plurality of cover plates (4) evenly distributed along the circumference are movably provided on each base (1); the plurality of cover plates (4) are respectively connected to the operating plate (3) via a transmission assembly (5); and the operating plate (3) is moved to simultaneously drive the plurality of cover plates (4) to move toward the opening of the annular groove (2), thereby achieving fixation of the Rogowski coil.

2. A bracket for fixing a Rogowski coil according to claim 1, characterized in that: The operating plate (3) is slidably mounted on the base (1), and the operating plate (3) slides in the axial direction. The plurality of cover plates (4) are rotatably mounted on the base (1), and the plurality of cover plates (4) rotate in the radial direction.

3. A bracket for fixing a Rogowski coil according to claim 2, characterized in that: A rotating shaft (6) is provided on the base (1), and the cover plate (4) is mounted on the rotating shaft (6). The cover plate (4) covers the opening of the annular groove (2) as the rotating shaft (6) rotates.

4. The bracket for fixing a Rogowski coil according to claim 3, characterized in that: The transmission assembly (5) comprises: a gear (7) and a rack (8) meshing with each other, the gear (7) being sleeved on the rotating shaft (6), and the rack (8) being fixed on the operating panel (3), and the gear (7) being driven to rotate by the linear movement of the rack (8).

5. The bracket for fixing a Rogowski coil according to claim 2, characterized in that: The base (1) is provided with a guide member (9) extending outward in the axial direction, and the operating plate (3) is provided with an avoidance channel (10) for passing through the guide member (9).

6. The bracket for fixing a Rogowski coil according to claim 5, characterized in that: The guide member (9) is a round rod structure having at least two round rod structures distributed along the circumference, and the avoidance channel (10) groove is a circular channel.

7. A bracket for fixing a Rogowski coil according to any one of claims 1 to 6, characterized in that: Also includes: An elastic member (11) is connected between the operating plate (3) and the base (1), and the elastic member (11) has a pulling force that causes the operating plate (3) and the base (1) to move closer to each other.

8. The bracket for fixing a Rogowski coil according to claim 7, characterized in that: The elastic member (11) comprises a first magnetic block (12) and a second magnetic block (13) that attract each other, wherein the first magnetic block (12) is mounted on the operating panel (3), and the second magnetic block (13) is mounted on the base (1).

9. A bracket for fixing a Rogowski coil according to any one of claims 1 to 6, characterized in that: Two adjacent bases (1) are plug-connected.

10. The bracket for fixing a Rogowski coil according to claim 9, characterized in that: One of the bases (1) is provided with two symmetrically distributed slots (14), the inner walls of the slots (14) are provided with friction plates (15), and the other base (1) is provided with an inserting block (16) for matching with the slots (14).

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