High-reliability open type mutual inductor
By introducing a wrapped fixing structure of arc plates and locking rods into the open transformer, combined with nut locking, the problem of transformers sliding or disengaging on the cable is solved, achieving higher stability and detection accuracy.
Patent Information
- Application Number
- CN202422328672.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-24
AI Technical Summary
The existing open-port transformers are fixed and unstable on the cable, and are prone to slide or disconnect due to temperature changes, affecting the accuracy of current and voltage detection.
A structure including the transformer body, a curved plate, a locking plate and a locking rod is designed. The curved plate is used to form a wrap-fitting fixation, and locking it through a combination of locking parts and nuts to ensure the stable installation of the transformer body on the cable.
It effectively avoids the transformer sliding or falling off on the cable, improving the stability and accuracy during the detection process.
Smart Images
Figure CN223167317U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of transformers, and particularly relates to an open-type transformer with high reliability. Background Art
[0002] An open-type transformer is a device used for measuring and monitoring current or voltage, and is usually used for protection and measurement in a power system. The open-type transformer has an opening or a separated part, and can be directly clamped on a wire for measurement without disconnecting the circuit.
[0003] However, when many existing open-type transformers are locked, they are fixed by plastic buckles on both sides of themselves. Due to the large performance variation of plastic materials, and the high temperature on the surface of the cable or in the environment where the transformer is located, the buckles are easily loosened due to the influence of temperature, resulting in the transformer sliding or detaching on the cable, and affecting the accuracy of current and voltage detection.
[0004] Therefore, it is necessary to design an open-type transformer with high reliability to overcome the above technical defects. Summary of the Utility Model
[0005] (1) Technical Problems to be Solved
[0006] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide an open-type transformer with high reliability, which aims to solve the technical problems that it is not easy to be stably fixed on a cable and is prone to sliding or detaching under the influence of temperature in the prior art.
[0007] (2) Technical Solutions
[0008] To solve the above technical problems, the utility model provides such an open-type transformer with high reliability, which includes a transformer main body and two arc-shaped plates arranged outside the transformer main body. The two arc-shaped plates are rotatably connected to each other. The other ends of the two arc-shaped plates are fixedly connected with locking plates. A round hole is opened on the side wall of the upper locking plate, and a clamping groove is opened on the side wall of the lower locking plate. A locking rod is movably connected in the round hole. The locking rod penetrates through the clamping groove. A locking member is arranged on the side wall of the locking rod. Two fixing components are respectively arranged on the left and right side walls of the transformer main body.
[0009] Furthermore, the locking member includes a baffle fixedly connected to the side wall of the locking rod above the upper locking plate. A spring is sleeved on the side wall of the locking rod. The spring is located between the baffle and the upper locking plate. A rectangular block is fixedly connected to the side wall of the locking rod near the bottom end. Two rectangular grooves are opened on the bottom surface of the lower locking plate. The rectangular grooves communicate with the clamping groove. The rectangular block is adapted to the rectangular groove.
[0010] Furthermore, an external thread is provided on the side wall of the locking rod near the bottom end, and a nut is threadedly connected to the side wall of the locking rod below the lower locking plate.
[0011] Furthermore, a pull ring is fixedly connected to the top surface of the baffle.
[0012] Furthermore, the fixing assembly includes a mounting plate fixedly connected to the side wall of the transformer body, the side wall of the mounting plate is threadedly connected with a screw, and opposite ends of the screw are rotatably connected to a clamping plate.
[0013] Furthermore, the side walls of the clamping plate are fixedly connected with insulating pads.
[0014] (3) Beneficial effects
[0015] Compared with the prior art, the beneficial effects of the present invention are:
[0016] The utility model can facilitate locking of the arc plates on both sides through the design of the transformer body, arc plate, locking plate, locking rod and locking piece, and utilizes the wrapping force formed by the arc plate to wrap and fix the transformer body. At the same time, it cooperates with the nut for secondary locking, which can effectively prevent the transformer body from sliding or falling off, and effectively improve the stability during the detection process. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural diagram of the utility model;
[0018] Figure 2 This is a schematic structural diagram of the locking member of the utility model;
[0019] Figure 3 This is a bottom view of the locking plate of the utility model;
[0020] Figure 4 This is a bottom view of the locking member of the present invention;
[0021] Figure 5 For this utility model Figure 3 A in the enlarged view.
[0022] The marks in the accompanying drawings are: 1. Transformer body; 2. Arc plate; 3. Locking plate; 4. Slot; 5. Locking rod; 6. Baffle; 7. Spring; 8. Rectangular block; 9. Rectangular slot; 10. Nut; 11. Pull ring; 12. Mounting plate; 13. Screw; 14. Clamp; 15. Insulation pad. DETAILED DESCRIPTION
[0023] This specific embodiment is a high reliability open type mutual inductor, the structural diagram of which is shown in FIG. Figure 1-Figure 5As shown in the figure, it includes a mutual inductor main body 1 and two arc-shaped plates 2 arranged on the periphery of the mutual inductor main body 1. The mutual inductor main body 1 is a prior art, and its structure and principle will not be described in detail in this solution. The two arc-shaped plates 2 are rotatably connected to each other. The other ends of the two arc-shaped plates 2 are fixedly connected with locking plates 3. A round hole is opened on the side wall of the upper locking plate 3, and a clamping groove 4 is opened on the side wall of the lower locking plate 3. A locking rod 5 is movably connected in the round hole. The locking rod 5 passes through the clamping groove 4. A locking member is arranged on the side wall of the locking rod 5. Two fixing components are respectively arranged on the left and right side walls of the mutual inductor main body 1.
[0024] Among them, in this solution, the wrapping type fixation is carried out by means of two arc-shaped plates 2, and the two arc-shaped plates 2 form a clamp structure. This structure can not only be applied to the mutual inductor main body 1 in this solution, but also can be applied to other open-type mutual inductors.
[0025] As Figure 3-Figure 5 shown in the figure, the locking member includes a baffle 6 fixedly connected to the side wall of the locking rod 5 above the upper locking plate 3. A spring 7 is sleeved on the side wall of the locking rod 5. The spring 7 is located between the baffle 6 and the upper locking plate 3. A rectangular block 8 is fixedly connected to the side wall of the locking rod 5 near the bottom end. Two rectangular grooves 9 are opened on the bottom surface of the lower locking plate 3. The rectangular grooves 9 are communicated with the clamping groove 4. The rectangular block 8 is adapted to the rectangular grooves 9. A pull ring 11 is fixedly connected to the top surface of the baffle 6. The pull ring 11 is used to facilitate the force on the locking rod 5.
[0026] Specifically, the round hole is located at the center position of the upper locking plate 3, and the clamping groove 4 is located at the position of the lower locking plate 3 close to the arc-shaped plate 2, and the clamping groove 4 penetrates the end face of the locking plate 3. The diameter of the round hole is the same as the width of the clamping groove 4, which can simultaneously adapt to the diameter of the locking rod 5. When the locking rod 5 drives the rectangular block 8 to insert into the clamping groove 4, the clamping groove 4 will not obstruct the rectangular block 8. When the spring 7 drives the rectangular block 8 to reset, the rectangular block 8 is aligned with the rectangular groove 9, and the rectangular block 8 is driven by the resilience of the spring 7 to snap into the rectangular groove 9. The two locking plates 3 are locked by the pulling force of the spring 7.
[0027] As Figure 4 shown in the figure, an external thread is opened on the side wall of the locking rod 5 near the bottom end. A nut 10 is threadedly connected to the side wall of the locking rod 5 below the lower locking plate 3. After being fixed by the locking member, the nut 10 can be rotated to tighten the lower locking plate 3, realizing the function of secondary fixation and effectively avoiding the phenomenon of the mutual inductor main body 1 shaking.
[0028] As Figure 1 shown in the figure, the fixing component includes a mounting plate 12 fixedly connected to the side wall of the mutual inductor main body 1. A screw rod 13 is threadedly connected to the side wall of the mounting plate 12. The opposite ends of the screw rod 13 are rotatably connected with clamping plates 14. Insulating pads 15 are fixedly connected to the side walls of the clamping plates 14.
[0029] Among them, after the transformer body 1 is installed, the positions of the upper and lower side clamps 14 are adjusted to clamp the cable so that the cable is located in the center of the transformer body 1, thereby improving the accuracy of cable detection; at the same time, compared with traditional cable tie fixation, this solution has a simple structure and is not easy to loosen.
[0030] Working principle: When it needs to be installed on the cable for testing, first put the transformer body 1 on the cable, then clamp the arc plate 2 on the transformer body 1, and at the same time press down and turn the pull ring 11 to drive the locking rod 5 to rotate to 90°, tighten the spring 7, and insert the locking rod 5 into the slot 4, then release the locking rod 5, and use the force of the spring 7 to drive the locking rod 5 to reset and rise, so that the rectangular block 8 is stuck in the rectangular slot 9, and then turn the nut 10 for secondary fixation to ensure that the transformer body 1 will not slip or fall off during use. In order to further improve the detection accuracy of the cable, rotate the screw 13 to drive the splint 14 to move and fix the cable in the middle position of the transformer body 1, which can not only improve the stability of the cable, but also enhance the detection effect.
[0031] All technical features in this embodiment can be freely combined according to actual needs.
[0032] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.
Claims
1. An open-type current transformer with high reliability, comprising a current transformer main body (1) and two arc-shaped plates (2) arranged on the periphery of the current transformer main body (1), characterized in that: The two arc-shaped plates (2) are rotatably connected to each other. The other ends of the two arc-shaped plates (2) are fixedly connected with locking plates (3). A round hole is formed in the side wall of the upper locking plate (3), and a clamping groove (4) is formed in the side wall of the lower locking plate (3). A locking rod (5) is movably connected in the round hole. The locking rod (5) penetrates through the clamping groove (4). A locking member is arranged on the side wall of the locking rod (5). Two fixing components are respectively arranged on the left and right side walls of the mutual inductor body (1).
2. The open-type current transformer with high reliability according to claim 1, characterized in that: The locking member includes a baffle (6) fixedly connected to the side wall of the locking rod (5) above the upper locking plate (3). A spring (7) is sleeved on the side wall of the locking rod (5). The spring (7) is located between the baffle (6) and the upper locking plate (3). A rectangular block (8) is fixedly connected to the side wall of the locking rod (5) near the bottom end. Two rectangular grooves (9) are formed in the bottom surface of the lower locking plate (3). The rectangular grooves (9) communicate with the clamping groove (4). The rectangular block (8) is adapted to the rectangular grooves (9).
3. The open-type current transformer with high reliability according to claim 2, wherein: External threads are formed on the side wall of the locking rod (5) near the bottom end. A nut (10) is threadedly connected to the side wall of the locking rod (5) below the lower locking plate (3).
4. The high-reliability open-type current transformer according to claim 2, wherein: A pull ring (11) is fixedly connected to the top surface of the baffle (6).
5. A highly reliable open-type current transformer according to claim 1, wherein: The fixing component includes a mounting plate (12) fixedly connected to the side wall of the mutual inductor body (1). A screw (13) is threadedly connected to the side wall of the mounting plate (12). Clamping plates (14) are rotatably connected to the opposite ends of the screw (13).
6. The open-type current transformer with high reliability according to claim 5, characterized in that: Insulating pads (15) are fixedly connected to the side walls of the clamping plates (14).