Rotary lock type current transformer with quick dismountable core

Abstract

The utility model discloses a rotatory lock catch type current transformer of quick assembly and disassembly iron core belongs to current transformer technical field. The rotatory lock catch type current transformer mainly includes fixed sleeve, iron core body, baffle, rotation sleeve and auxiliary rotating mechanism. Among them, the end face opening of fixed sleeve, one side opening of fixed sleeve thickness direction, the opening side of fixed sleeve thickness direction is equipped with guide boss, the opening side of fixed sleeve thickness direction is equipped with baffle, and the one side of baffle thickness direction is equipped with guide slot, and the end face of baffle is equipped with first limit slot, the upper side of baffle end face is equipped with rotation sleeve, and the end face of rotation sleeve and the end face of fixed sleeve are equipped with accommodating space, and the end face of rotation sleeve is equipped with first limit block, and the position of accommodating space is equipped with auxiliary rotating mechanism. Compared with prior art, the utility model discloses improve the speed of replacing iron core body, improve the measurement accuracy of current transformer to a certain extent, therefore, has higher practicality.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, and in particular to a rotary latch type current transformer with a quick-release iron core. Background Technology

[0002] As an indispensable electrical measurement and protection device in power systems, instrument transformers have the core function of converting high voltage / large current to low voltage / small current through the principle of electromagnetic induction. Among them, current transformers (CTs) play a crucial role in proportionally transforming large primary currents into standard small secondary currents, and their measurement accuracy directly affects the metering accuracy of the power system and the operational reliability of protection devices.

[0003] The core components of a current transformer include the primary winding, secondary winding, and core. As the medium for electromagnetic energy conversion, the material properties and structural design of the core have a decisive influence on the linearity, saturation characteristics, and temperature rise characteristics of the transformer. However, most existing current transformer cores adopt a one-piece molded closed structure. While this design can guarantee the initial permeability, it has the following drawbacks: after long-term operation, the core material generally suffers from deterioration of excitation characteristics due to residual magnetism accumulation, significantly impacting measurement accuracy. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a rotary locking current transformer with a quickly detachable and detachable iron core, primarily comprising a fixed sleeve, an iron core body, a protective plate, a rotating sleeve, and an auxiliary rotating mechanism. In use, the guide protrusion on the fixed sleeve, the guide groove on the protective plate, the first limiting groove on the protective plate, and the first limiting block on the rotating sleeve cooperate to form a locking structure, preventing the iron core body inside the fixed sleeve from slipping to the outside and causing damage. Furthermore, the auxiliary rotating mechanism can move the first limiting block on the rotating sleeve away from or towards the first limiting groove on the protective plate; this design facilitates the disassembly and assembly of the iron core body by operators. Compared to existing technologies, this utility model improves the speed of iron core body replacement and, to a certain extent, enhances the measurement accuracy of the current transformer, thus possessing high practicality.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Rotary latching current transformers with quick-release cores include:

[0007] A fixing sleeve has an opening on its end face and an opening on one side in the thickness direction. An iron core body is placed inside the fixing sleeve, and a guide protrusion is provided on the opening side in the thickness direction of the fixing sleeve.

[0008] The guard plate has a guide groove on its side that matches the guide protrusion, and a first limiting groove on its end face.

[0009] A rotating sleeve has an open end face that is opposite to the end face of the fixed sleeve. There is a receiving space between the rotating sleeve and the fixed sleeve. The end face of the rotating sleeve is provided with a first limiting block. The guide protrusion, the guide groove, the first limiting block, and the first limiting groove can cooperate to form a locking structure.

[0010] in,

[0011] An auxiliary rotating mechanism is provided at the location of the accommodating space. The auxiliary rotating mechanism is used to move the first limiting block away from or towards the first limiting groove.

[0012] Furthermore,

[0013] The guide protrusion is laterally disposed on the opening side in the thickness direction of the fixing sleeve;

[0014] The guide groove is laterally formed on one side of the protective plate along its thickness direction; and / or

[0015] A blocking block is provided at the end of the guide protrusion away from the auxiliary rotation mechanism.

[0016] Furthermore, the guide surface of the guide bump is provided with an anti-slip layer.

[0017] Furthermore,

[0018] A second limiting groove is provided on one side of the end face of the fixed sleeve, and the second limiting groove is away from the protective plate;

[0019] The end face of the rotating sleeve is provided with a second limiting block, which is adapted to the second limiting groove, and the second limiting block and the first limiting block are symmetrically arranged on both sides of the thickness direction of the rotating sleeve.

[0020] Furthermore, the auxiliary rotating mechanism includes:

[0021] The fixing block has its bottom end connected to the end face of the fixing sleeve. The fixing block is far away from the second limiting groove. That is, the iron core body is provided between the fixing block and the second limiting groove, and the fixing block is symmetrically arranged on both sides of the thickness direction of the fixing sleeve.

[0022] A rotating shaft, the end of which passes through the interior of the fixed block, and the outer wall of the rotating shaft is rotatably connected to the inner wall of the fixed block;

[0023] A connector is disposed between the two fixed blocks. The inner wall of the connector is fixedly connected to the outer wall of the rotating shaft, and the end face of the connector away from the fixed sleeve is connected to the end face of the rotating sleeve.

[0024] Furthermore, the outer peripheral wall of the rotating sleeve is provided with a groove.

[0025] Furthermore, the inner wall of the groove is provided with a rubber pad.

[0026] Furthermore, this rotary latching current transformer with a quick-release core also includes:

[0027] Damping support mechanism;

[0028] The damping and holding mechanism is used to prevent the guard plate from moving along the thickness direction of the guard plate under the action of external force. The damping and holding mechanism is disposed on the outer peripheral wall of the fixed sleeve.

[0029] Furthermore, the damping abutment mechanism includes:

[0030] A connecting block, the side of which is connected to the outer peripheral wall of the fixing sleeve;

[0031] A damping shaft, one end of which is damped and rotatably connected to the side of the connecting block away from the rotating sleeve;

[0032] A support plate, the inner wall of which is connected to the outer peripheral wall of the damping shaft, is located near the other end of the damping shaft.

[0033] Furthermore, this rotary latching current transformer with a quick-release core also includes:

[0034] A fixing seat is disposed on the outer peripheral wall of the fixing sleeve, the fixing seat is away from the rotating sleeve, and the thickness of the fixing seat is equal to the sum of the thickness of the fixing sleeve and the thickness of the protective plate;

[0035] Positioning elements are symmetrically arranged on both sides of the length direction of the fixing base, and mounting holes are symmetrically opened on the positioning elements.

[0036] The beneficial effects of this utility model are:

[0037] 1. The rotary locking current transformer with quick-release iron core provided by this utility model is equipped with a fixed sleeve and a protective plate. The guide protrusion on the fixed sleeve is adapted to the guide groove on the protective plate. This design facilitates the disassembly and assembly of the fixed sleeve and the protective plate by the operator.

[0038] 2. This rotary locking current transformer with quick-release and detachable iron core is equipped with a rotating sleeve and an auxiliary rotating mechanism. The first limiting block on the rotating sleeve is adapted to the first limiting groove on the protective plate. The auxiliary rotating mechanism can move the first limiting block on the rotating sleeve away from or towards the first limiting groove on the protective plate. The guide protrusion, guide groove, first limiting groove, and first limiting block work together to form a locking structure, preventing the iron core body inside the fixed sleeve from slipping to the outside and causing damage. This design facilitates the disassembly and assembly of the rotating sleeve and the protective plate by the operator, thereby increasing the speed of replacing the iron core body and improving the measurement accuracy of the current transformer to a certain extent. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0040] Figure 2 This utility model Figure 1 Another perspective;

[0041] Figure 3 This is a schematic diagram showing the state of the iron core body during disassembly and assembly of this utility model. Figure 1 Another perspective);

[0042] Figure 4 This is a schematic diagram of the structure of the present invention in a specific application scenario. Figure 1 Another perspective).

[0043] Figure label:

[0044] 1. Fixing sleeve; 11. Guide protrusion; 12. Blocking block; 13. Second limiting groove;

[0045] 2. Auxiliary rotating mechanism; 21. Fixed block; 22. Rotating shaft; 23. Connecting body;

[0046] 3. Guard plate; 31. Guide groove; 32. First limiting groove;

[0047] 4. Rotating sleeve; 41. First limiting block; 42. Second limiting block; 43. Groove;

[0048] 5. Damping and holding mechanism; 51. Connecting block; 52. Damping shaft; 53. Holding plate;

[0049] 6. Fixing base; 61. Positioning element; 62. Mounting hole;

[0050] 7. Iron core body;

[0051] 8. Accommodation space. Detailed Implementation

[0052] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0053] As attached Figure 1-4As shown, this embodiment discloses a rotary locking current transformer with a quickly detachable iron core, used to improve the speed of replacing the iron core body 7. It mainly includes a fixed sleeve 1, an iron core body 7, a protective plate 3, a rotating sleeve 4, and an auxiliary rotating mechanism 2. The fixed sleeve 1 has a protective plate 3 on its front side and a rotating sleeve 4 on its upper side. The fixed sleeve 1, protective plate 3, and rotating sleeve 4 surround the iron core body 7, meaning the iron core body 7 is placed inside the fixed sleeve 1. A guide protrusion 11 is provided between the fixed sleeve 1 and the protective plate 3, and the protective plate 3 has a guide groove 31 adapted to the guide protrusion 11. A first limiting groove 32 is provided at the position opposite to the rotating sleeve 4, and a second limiting groove 32 adapted to the first limiting groove 32 is provided on the rotating sleeve 4. A limiting block 41, guide protrusion 11, guide groove 31, first limiting groove 32, and first limiting block 41 cooperate to form a locking structure to prevent the iron core body 7 inside the fixed sleeve 1 from slipping to the outside and causing damage. In addition, there is a receiving space 8 between the fixed sleeve 1 and the rotating sleeve 4. An auxiliary rotating mechanism 2 is provided at the position of the receiving space. The auxiliary rotating mechanism 2 can move the first limiting block 41 on the rotating sleeve 4 away from or close to the first limiting groove 32 on the guard plate 3, thereby improving the speed of replacing the iron core body 7.

[0054] In use, the staff prepares a new iron core body 7 in advance; then, this embodiment is removed from the power system; then, with the help of the auxiliary rotating mechanism 2, the rotating sleeve 4 is rotated, so that the first limiting block 41 on the rotating sleeve 4 moves away from the first limiting groove 32 on the protective plate 3; then, the protective plate 3 is moved away from the fixed sleeve 1, and the state at this time can be roughly referred to the appendix. Figure 3 The contents are shown below; next, place the protective plate 3 flat on the side, remove the old iron core body 7 from the fixing sleeve 1, and put in the pre-prepared new iron core body 7; then, with the help of the guide groove 31, place the protective plate 3 on the fixing sleeve 1; then, with the help of the auxiliary rotating mechanism 2, rotate the rotating sleeve 4 so that the first limiting block 41 on the rotating sleeve 4 is inserted into the first limiting groove 32 on the protective plate 3. The guide protrusion 11, the guide groove 31, the first limiting groove 32, and the first limiting block 41 can cooperate to form a locking structure, as shown in the attached figure. Figure 1 As shown, this design prevents the new iron core body 7 inside the fixed sleeve 1 from slipping to the outside and causing damage. At this point, the replacement operation of the new iron core body 7 is completed. This design improves the speed of replacing the iron core body 7 and improves the measurement accuracy of the current transformer to a certain extent.

[0055] The specific structure of the rotary latch-type current transformer is as follows: It includes a fixed sleeve 1, with an opening on one end face and an opening on one side in the thickness direction. An iron core body 7 is placed inside the fixed sleeve 1. A guide protrusion 11 is provided on the opening side in the thickness direction of the fixed sleeve 1. A protective plate 3 is provided on the opening side in the thickness direction of the fixed sleeve 1. A guide groove 31 is formed on one side of the protective plate 3 in the thickness direction, which is adapted to the guide protrusion 11. A first limiting groove 32 is formed on the end face of the protective plate 3. A rotating sleeve 4 is provided on the upper side of the end face of the protective plate 3. The end face of the rotating sleeve 4 is open. The end face of the rotating sleeve 4 is opposite to the end face of the fixed sleeve 1, and the end face of the protective plate 3 is opposite to the end face of the rotating sleeve 4. A receiving space 8 is provided between the end face of the rotating sleeve 4 and the end face of the fixed sleeve 1. A first limiting block 41 is provided on the end face of the rotating sleeve 4. The first limiting block 41 is adapted to the first limiting groove 32, and the first limiting block 41, the first limiting groove 32, the guide protrusion 11, and the guide groove 31 cooperate to form a locking structure, preventing the iron core body 7 inside the fixed sleeve 1 from slipping to the outside and causing damage. An auxiliary rotating mechanism 2 is provided at the position of the receiving space 8. This auxiliary rotating mechanism 2 is used to move the first limiting block 41 away from or towards the first limiting groove 32. Compared with the prior art, this utility model improves the speed of replacing the iron core body 7 and, to a certain extent, improves the measurement accuracy of the current transformer. Therefore, it has high practicality.

[0056] Furthermore, as shown in the appendix Figure 3 As shown, the guide protrusion 11 is laterally arranged on the opening side of the fixed sleeve 1 in the thickness direction; the guide groove 31 is laterally opened on one side of the guard plate 3 in the thickness direction. This design makes it convenient for the staff to take the guard plate 3 from the position of the fixed sleeve 1. During the process of taking the guard plate 3, the staff can either move the guard plate 3 back and forth to achieve the contact operation between the guide protrusion 11 and the guide groove 31, or move the guard plate 3 left and right to achieve the contact operation between the guide protrusion 11 and the guide groove 31. In addition, a blocking block 12 is provided at the end of the guide protrusion 11 away from the auxiliary rotating mechanism 2. This design can prevent the guard plate 3 from sliding out of the fixed sleeve 1 when the staff moves the guard plate 3 left and right, and provides a certain degree of stability between the guard plate 3 and the fixed sleeve 1.

[0057] Furthermore, the guide surface of the guide protrusion 11 is provided with an anti-slip layer (not shown in the figure). This design can prevent the guard plate 3 from shifting relative to the fixing sleeve 1 under the action of external force.

[0058] Furthermore, as shown in the appendix Figure 3As shown, a second limiting groove 13 is provided on the rear side of the end face of the fixed sleeve 1; a second limiting block 42 is provided on the rear side of the end face of the rotating sleeve 4. The second limiting block 42 is adapted to the second limiting groove 13, and the second limiting block 42 and the aforementioned first limiting block 41 are symmetrically arranged on both sides of the thickness direction of the rotating sleeve 4. This design enhances the stability of the locking structure in this embodiment.

[0059] In a specific application scenario, as shown in the appendix Figure 2 and appendix Figure 3 As shown, the auxiliary rotating mechanism 2 includes a fixed block 21, a rotating shaft 22, and a connecting body 23. The bottom end of the fixed block 21 is fixedly connected to the end face of the fixed sleeve 1. The fixed block 21 is located away from the first limiting groove 32, meaning that the core body 7 is positioned between the fixed block 21 and the second limiting groove 13. There are two fixed blocks 21, symmetrically arranged on both sides of the fixed sleeve 1 in the thickness direction. The rotating shaft 22 passes through the side of the fixed block 21, and the outer wall of the rotating shaft 22 is rotatably connected to the inner wall of the fixed block 21. A connecting body 23 is positioned between the two fixed blocks 21. The inner wall of the connecting body 23 is fixedly connected to the outer wall of the rotating shaft 22, and the end face of the connecting body 23 away from the fixed sleeve 1 is fixedly connected to the end face of the rotating sleeve 4. In use, the operator can control the opening and closing state of the rotating sleeve 4 with the cooperation of the rotating shaft 22 and the fixed block 21, facilitating quick assembly and disassembly of the core body 7.

[0060] In a specific application scenario, as shown in the appendix Figure 1 Or attach Figure 3 As shown, the outer peripheral wall of the rotating sleeve 4 is provided with a groove 43. The groove 43 is far away from the auxiliary rotating mechanism 2. This design makes it easy for the staff to quickly switch the opening and closing state of the rotating sleeve 4 through the groove 43, thereby improving the replacement speed of the iron core body 7.

[0061] Furthermore, the inner wall of the groove 43 is provided with a rubber pad (not shown in the figure), which can reduce the degree of injury to the workers' hands caused by the inner wall of the groove 43.

[0062] In a specific application scenario, as shown in the appendix Figure 4 As shown, a damping and supporting mechanism 5 is provided on the fixed sleeve 1. The damping and supporting mechanism 5 is located on the outer peripheral wall of the fixed sleeve 1. The damping and supporting mechanism 5 can prevent the guard plate 3 from moving along the thickness direction of the guard plate 3 under the action of external force, thereby reducing the risk of the guard plate 3 shifting relative to the fixed sleeve 1 under the action of external force. Of course, in actual use, the operator can set two sets of damping and supporting mechanisms 5, and these two sets of damping and supporting mechanisms 5 are symmetrically arranged with the center of the fixed sleeve 1. This design can further reduce the risk of the guard plate 3 shifting relative to the fixed sleeve 1 under the action of external force.

[0063] Furthermore, as shown in the appendix Figure 4 As shown, the damping support mechanism 5 includes a connecting block 51, a damping rotating shaft 52, and a support plate 53. Specifically, the side of the connecting block 51 is fixedly connected to the outer peripheral wall of the fixed sleeve 1. The damping rotating shaft 52 is provided on the side of the connecting block 51 away from the rotating sleeve 4. The support plate 53 is provided on the outer peripheral wall of the damping rotating shaft 52. The support plate 53 is close to the front end of the damping rotating shaft 52, and the support surface of the support plate 53 can support the side of the guard plate 3 in the thickness direction. When the iron core body 7 needs to be replaced, first, the abutment plate 53 is moved towards the lower side of the fixing sleeve 1 until the abutment surface of the abutment plate 53 no longer contacts the protective plate 3; when the operator moves the abutment plate 53 halfway and the abutment surface of the abutment plate 53 contacts the protective plate 3, the operator stops moving it. Under the action of the damping pivot 52, the abutment plate 53 remains in place; the effect of the damping pivot 52 can be understood as the effect of the component connecting the screen and keyboard in a laptop computer; specifically, during the process of the screen being moved up and down, the screen can maintain a relatively stationary state with the keyboard at any angle; if the operator completes the replacement operation of the iron core body 7 and the guide protrusion 11, guide groove 31, first limiting block 41, and first limiting groove 32 form a locking structure, as shown in the attached... Figure 1 Or attach Figure 2 As shown; at this time, move the abutment plate 53 towards the upper side of the fixing sleeve 1 until the abutment surface of the abutment plate 53 is roughly parallel to the end face of the fixing sleeve 1, as shown in the attached figure. Figure 4 As shown.

[0064] It should be noted that when the workers disassemble and install the guard plate 3 under the action of the damping and holding mechanism 5, they should do so in the direction of the thickness of the guard plate 3 to avoid the peripheral surface of the guard plate 3 colliding with the damping and holding mechanism 5, thereby causing damage to the components of this embodiment.

[0065] This embodiment takes into account one situation, and the specific solution is as follows: A fixing seat 6 is provided on the outer peripheral wall of the fixing sleeve 1. The fixing seat 6 is away from the rotating sleeve 4. The thickness of the fixing seat 6 is equal to the sum of the thickness of the fixing sleeve 1 and the thickness of the protective plate 3. This design can provide support for the fixing sleeve 1 and the protective plate 3. Positioning members 61 are symmetrically arranged on both sides of the fixing seat 6 along its length. The positioning members 61 are symmetrically provided with mounting holes 62. This design makes it easy for the staff to install and fix this embodiment in the corresponding power system. In addition, a test interface (not marked in the figure) is provided on the side of the fixing seat 6 facing the protective plate 3. This design makes it easy for the staff to perform performance tests on the iron core body 7 through an external testing device (not shown in the figure), thereby discovering the performance parameters of the iron core body 7 in advance and making a timely decision to replace the iron core body 7, which improves the measurement accuracy of the current transformer to a certain extent.

[0066] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” and “the” used in this invention may also include the plural forms. It should be further understood that the term “comprising” as used in this invention means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

Claims

1. A rotary latch-type current transformer with a quickly detachable iron core, characterized in that, include: A fixed sleeve (1) has an opening on its end face and an opening on one side in the thickness direction. An iron core body (7) is placed inside the fixed sleeve (1). A guide protrusion (11) is provided on the opening side in the thickness direction of the fixed sleeve (1). A guard plate (3) has a guide groove (31) on its side that is adapted to the guide protrusion (11). A first limiting groove (32) is provided on the end face of the guard plate (3). A rotating sleeve (4) has an opening on its end face and is opposite to the end face of the fixed sleeve (1). An accommodating space (8) is provided between the rotating sleeve (4) and the fixed sleeve (1). A first limiting block (41) is provided on the end face of the rotating sleeve (4). The guide protrusion (11), the guide groove (31), the first limiting block (41), and the first limiting groove (32) can cooperate to form a locking structure. An auxiliary rotating mechanism (2) is provided at the position of the accommodating space (8). The auxiliary rotating mechanism (2) is used to move the first limiting block (41) away from or closer to the first limiting groove (32).

2. The rotary locking current transformer with a quickly detachable iron core as described in claim 1, characterized in that: The guide protrusion (11) is laterally disposed on the opening side of the fixed sleeve (1) in the thickness direction; the guide groove (31) is laterally opened on one side of the guard plate (3) in the thickness direction; and / or a blocking block (12) is provided at one end of the guide protrusion (11) away from the auxiliary rotating mechanism (2).

3. The rotary latching current transformer with a quickly detachable iron core as described in claim 1 or claim 2, characterized in that, The guide surface of the guide bump (11) is provided with an anti-slip layer.

4. The rotary latching current transformer with quick-release core as described in claim 3, characterized in that: A second limiting groove (13) is provided on one side of the end face of the fixed sleeve (1), and the second limiting groove (13) is far away from the guard plate (3); a second limiting block (42) is provided on the end face of the rotating sleeve (4), the second limiting block (42) is adapted to the second limiting groove (13), and the second limiting block (42) and the first limiting block (41) are symmetrically arranged on both sides of the thickness direction of the rotating sleeve (4).

5. The rotary locking current transformer with a quickly detachable iron core according to claim 4, characterized in that, The auxiliary rotating mechanism (2) includes: a fixed block (21), the bottom end of which is connected to the end face of the fixed sleeve (1), the fixed block (21) being away from the second limiting groove (13), that is, the iron core body (7) is provided between the fixed block (21) and the second limiting groove (13), and the fixed block (21) is symmetrically arranged on both sides of the thickness direction of the fixed sleeve (1); a rotating shaft (22), the end of which passes through the interior of the fixed block (21), and the outer wall of the rotating shaft (22) is rotatably connected to the inner wall of the fixed block (21); a connecting body (23), which is disposed between the two fixed blocks (21), the inner wall of the connecting body (23) being fixedly connected to the outer wall of the rotating shaft (22), and the end face of the connecting body (23) away from the fixed sleeve (1) being connected to the end face of the rotating sleeve (4).

6. The rotary latching current transformer with quick-release core according to any one of claims 1, 2, 4, or 5, characterized in that, The outer peripheral wall of the rotating sleeve (4) is provided with a groove (43).

7. The rotary latch current transformer with quick-release core as described in claim 6, characterized in that, The inner wall of the groove (43) is provided with a rubber pad.

8. The rotary latching current transformer with quick-release core according to any one of claims 1, 2, 4, 5, or 7, characterized in that, Also includes: Damping support mechanism (5); The damping support mechanism (5) is used to prevent the guard plate (3) from moving along the thickness direction of the guard plate (3) under the action of external force. The damping support mechanism (5) is provided on the outer peripheral wall of the fixed sleeve (1).

9. The rotary locking current transformer with a quickly detachable iron core according to claim 8, characterized in that, The damping support mechanism (5) includes: a connecting block (51) whose side is connected to the outer peripheral wall of the fixed sleeve (1); a damping rotating shaft (52) whose one end is damped and rotatably connected to the side of the connecting block (51) away from the rotating sleeve (4); and a support plate (53) whose inner wall is connected to the outer peripheral wall of the damping rotating shaft (52), and the support plate (53) is close to the other end of the damping rotating shaft (52).

10. The rotary latching current transformer with quick-release core according to any one of claims 1, 2, 4, 5, 7, or 9, characterized in that, Also includes: A fixing seat (6) is disposed on the outer peripheral wall of the fixing sleeve (1). The fixing seat (6) is far away from the rotating sleeve (4). The thickness of the fixing seat (6) is equal to the sum of the thickness of the fixing sleeve (1) and the thickness of the guard plate (3). A positioning member (61) is symmetrically disposed on both sides of the length direction of the fixing seat (6). The positioning member (61) is symmetrically provided with mounting holes (62).

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