Special-shaped split core type current transformer capable of preventing mistaken opening

Abstract

The utility model discloses a special-shaped split core type current transformer capable of preventing mistaken opening, which comprises a connecting shaft, a current mutual inductance mechanism is arranged on the outer side of the connecting shaft and used for being clamped on the outer side of an electric wire to measure the current of the electric wire, and the current mutual inductance mechanism comprises a test assembly, a control assembly and a power supply assembly, and the test assembly is arranged on the outer side of the connecting shaft and used for measuring the current of the electric wire. The utility model relates to the technical field of current transformers. According to the mistaken-opening-preventing special-shaped split core type current transformer, the stability of the device can be improved through the arranged clamping rod and the movable plate, the device is clamped on an electric wire in the using process, then a stopping frame is rotated rightwards so that the clamping rod can be tightly attached to the bottom face of an L-shaped plate, and then the stopping frame is pressed to drive the clamping rod to abut against the L-shaped plate so that the clamping rod can be located on the inner side of the L-shaped plate; and then the clamping rod is clamped in the clamping groove, at the moment, the movable plate can be pushed to move leftwards through the elastic force of the spring, then the movable plate can drive the L-shaped plate to enable the clamping rod to be tightly clamped in the clamping groove through the clamping groove, and the stability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a mis-opening-proof special-shaped clamp-type current transformer. Background Art

[0002] A current transformer is an electrical device that works based on the principle of electromagnetic induction. It is mainly used in power systems to convert high current into low current for measurement, protection and control.

[0003] The existing anti-misopening special-shaped clamp-on current transformer also has the following problems. The existing device is generally used by clamping the device on the wire. A patent application with reference to publication number CN220984284U discloses an anti-misopening special-shaped clamp-on current transformer. By adopting a pointed-mouth-type upper setting, the clamp-on current transformer can be inserted into a limited space. At the same time, the setting of the stop assembly can ensure that the wire can be locked by the stop assembly after being clamped, so as to avoid the clamp-on current transformer from opening due to falling off caused by vibration.

[0004] However, the stop component of the device in the above technology is fixed by a stop plate and a stop buckle to enable the device to be clamped on the wire for use, thereby avoiding falling off due to vibration. The existing device has limited resistance to vibration and impact by fixing with a clamping plate. Although it can provide a certain fixing effect, its fixing effect may be affected when facing strong vibration or impact, and its stability is general. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a mis-opening-proof special-shaped clamp-type current transformer, which solves the problem that the fixing effect of the existing mis-opening-proof special-shaped clamp-type current transformer may be affected and the stability is general when facing strong vibration or impact.

[0006] To achieve the above purpose, the utility model is implemented by the following technical solutions: a special-shaped clamp-on current transformer with anti-misoperation, including a connecting shaft, a current mutual induction mechanism is arranged on the outside of the connecting shaft for clamping on the outside of the wire to measure the current size of the wire, and the current mutual induction mechanism includes:

[0007] A test assembly is arranged outside the connecting shaft and is used to measure the current of the wire. The test assembly includes a right housing movably mounted on the right side of the connecting shaft, a left housing movably mounted on the left side of the connecting shaft, two connecting disks are fixedly mounted on the bottom surface of the left side of the right housing, and a fixed disk is fixedly mounted on the right side of the left housing;

[0008] A stop assembly is arranged on the bottom surface of the left shell body and is used to clamp the device on the outside of the wire. The stop assembly includes connecting plates fixedly installed on the front and rear sides of the bottom surface of the left shell body. A stop frame is movably installed on the opposite side of the connecting plate. A clamping rod is fixedly installed on the inner side of the stop frame. The bottom surface of the right shell body is provided with a clamping assembly for fixing the position of the stop frame so that the test assembly can be closed.

[0009] Preferably, the snap-on assembly includes a movable groove opened on the bottom surface of the connecting plate, a movable plate is movably installed inside the movable groove, an L-shaped plate is fixedly installed on the left side of the bottom surface of the movable plate, a handle is fixedly installed on the right side of the bottom surface of the movable plate, two limit rods are fixedly installed inside the movable groove, springs are movably sleeved on the outer sides of the two limit rods, and a snap-on groove is opened on the inner side of the L-shaped plate.

[0010] Preferably, the left ends of the front and rear sides of the stop frame are movably mounted on the opposite sides of the connecting plate, and the outer side of the clamping rod is tightly attached to the inner side of the clamping slot.

[0011] Preferably, the left ends of the two limit rods are movable through the right side of the movable plate and fixedly installed on the left side of the movable groove inner cavity, the left end of the spring is tightly attached to the right side of the movable plate, and the right end of the spring is fixedly installed on the right side of the movable groove inner cavity.

[0012] Preferably, the test assembly also includes a right arc groove opened inside the right shell body, a right iron core is fixedly installed inside the right arc groove, a right coil is fixedly installed on the outside of the right iron core, a left arc groove is opened inside the left shell body, a left iron core is fixedly installed inside the left arc groove, a left coil is fixedly installed on the outside of the left iron core, the front and rear sides of the fixed disk are tightly attached to the opposite sides of the two connecting disks, and the front and rear sides of the connecting shaft are movable through the interior of the fixed disk and the opposite sides of the two connecting disks and extend to the outsides of the two connecting disks.

[0013] Preferably, the top and bottom ends of the right core both pass through the interior of the right arc groove and extend to the outside of the right arc groove, and the top and bottom ends of the left core both pass through the interior of the left arc groove and extend to the outside of the left arc groove.

[0014] Beneficial Effects

[0015] The utility model provides a special-shaped clamp-on current transformer that can prevent mis-opening. Compared with the prior art, it has the following beneficial effects:

[0016] (1) The anti-misopening special-shaped clamp-type current transformer can improve the stability of the device by providing a clamping rod and a movable plate. When in use, the device is clamped on the wire, and then the stop frame is rotated to the right so that the clamping rod is tightly attached to the bottom surface of the L-shaped plate. The stop frame is then pressed to drive the clamping rod to push the L-shaped plate open so that the clamping rod is located on the inner side of the L-shaped plate. Then the clamping rod will be clamped inside the clamping slot. At this time, the elastic force of the spring can push the movable plate to move to the left. Then the movable plate will drive the L-shaped plate through the clamping slot so that the clamping rod is tightly clamped inside the clamping slot, thereby improving the stability of the device.

[0017] (2) The anti-misopening special-shaped clamp-type current transformer can detect the amount of electrical current through the provided movable plate and spring. When in use, pinch the lower ends of the left and right sides of the left shell and the right shell to open the upper ends of the left and right shells, then pick up the device through the left and right shells so that the wires are located between the left and right shells, then close the left and right shells so that the right iron core and the left iron core are tightly together, and then fix the position of the left and right shells through the stop assembly. At this time, a complete magnetic circuit is formed through the right iron core and the left iron core to detect the current through the right coil and the left coil, which has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional appearance schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional appearance of the utility model when viewed from above;

[0020] Figure 3 For the utility model Figure 2 The enlarged appearance diagram at A in the middle;

[0021] Figure 4 It is a front cross-sectional three-dimensional appearance schematic diagram of the utility model;

[0022] Figure 5 It is a schematic diagram of the side cross-sectional three-dimensional appearance of the utility model.

[0023] In the figure: 1-connecting shaft, 2-current mutual inductance mechanism, 21-test component, 211-left shell, 212-right shell, 213-connecting plate, 214-fixed plate, 215-right arc groove, 216-right iron core, 217-right coil, 218-left arc groove, 219-left iron core, 2110-left coil, 22-stop assembly, 221-connecting plate, 222-stop frame, 223-clamp rod, 224-clamp slot, 225-L-shaped plate, 226-movable plate, 227-movable slot, 228-handle, 229-spring, 2210-limit rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 5 , the utility model provides two technical solutions:

[0026] The first embodiment: a special-shaped clamp-on current transformer with anti-misoperation function, comprising a connecting shaft 1, a current mutual induction mechanism 2 is arranged outside the connecting shaft 1 for clamping outside the wire to measure the current of the wire, and the current mutual induction mechanism 2 comprises:

[0027] The test assembly 21 is arranged outside the connecting shaft 1 and is used to measure the current of the wire. The test assembly 21 includes a right housing 212 movably mounted on the right side of the connecting shaft 1, a left housing 211 movably mounted on the left side of the connecting shaft 1, two connecting disks 213 are fixedly mounted on the bottom surface of the left side of the right housing 212, and a fixed disk 214 is fixedly mounted on the right side of the left housing 211;

[0028] The stop assembly 22 is arranged on the bottom surface of the left shell 211 and is used to clamp the device on the outside of the wire. The stop assembly 22 includes a connecting plate 221 fixedly installed on the front and rear sides of the bottom of the left shell 211, and a stop frame 222 is movably installed on the opposite side of the connecting plate 221. A clamping rod 223 is fixedly installed on the inner side of the stop frame 222. A clamping assembly is arranged on the bottom surface of the right shell 212 to fix the position of the stop frame 222 so that the test assembly 21 can be closed. The clamping assembly includes a movable groove 227 opened on the bottom surface of the connecting plate 213, and a movable plate 226 is movably installed inside the movable groove 227, and the movable plate 226 is convex. An L-shaped plate 225 is fixedly installed on the left side of the bottom surface of the movable plate 226, and the bottom surface of the L-shaped plate 225 is arc-shaped. A handle 228 is fixedly installed on the right side of the bottom surface of the movable plate 226, and two limit rods 2210 are fixedly installed inside the movable groove 227. The outer sides of the two limit rods 2210 are movably sleeved with springs 229, and the positions of the springs 229 can be limited by the two limit rods 2210. A slot 224 is provided on the inner side of the L-shaped plate 225. The left ends of the front and rear sides of the stop frame 222 are movably installed on the opposite sides of the connecting plate 221. The outer side of the clamping rod 223 is tightly attached to the inner side of the clamping slot 224. The left ends of the two limit rods 2210 are movably passed through the right side of the movable plate 226 and fixedly installed on the left side of the inner cavity of the movable groove 227. The left end of the spring 229 is tightly attached to the right side of the movable plate 226, and the right end of the spring 229 is fixedly installed on the right side of the inner cavity of the movable groove 227. The movable plate 226 can be pushed to move to the left by the elastic force of the spring 229, and then the movable plate 226 will drive the L-shaped plate 225 through the clamping slot 224 to make the clamping rod 223 tightly stuck in the inner side of the clamping slot 224, thereby improving the stability of the device.

[0029] The stability of the device can be improved by providing the clamping rod 223 and the movable plate 226. When in use, the device is clamped on the wire, and then the stop frame 222 is rotated to the right to make the clamping rod 223 close to the bottom surface of the L-shaped plate 225. The stop frame 222 is then pressed to drive the clamping rod 223 to push the L-shaped plate 225 open so that the clamping rod 223 is located on the inner side of the L-shaped plate 225. Then the clamping rod 223 will be clamped in the inside of the clamping slot 224. At this time, the elastic force of the spring 229 can push the movable plate 226 to move to the left. Then the movable plate 226 will drive the L-shaped plate 225 through the clamping slot 224 to make the clamping rod 223 tightly clamped in the inside of the clamping slot 224, thereby improving the stability of the device.

[0030] The second embodiment is mainly different from the first embodiment in that: the test assembly 21 also includes a right arc groove 215 opened inside the right shell 212, a right iron core 216 is fixedly installed inside the right arc groove 215, and a right coil 217 is fixedly installed on the outside of the right iron core 216, a left arc groove 218 is opened inside the left shell 211, a left iron core 219 is fixedly installed inside the left arc groove 218, and the right iron core 216 and the left iron core 219 are both arc-shaped, and a left coil 2110 is fixedly installed on the outside of the left iron core 219, and the front and rear sides of the fixed disk 214 are both tightly attached to the opposite sides of the two connecting disks 213, and the front and rear sides of the connecting shaft 1 Both of them are movable and penetrate the interior of the fixed disk 214 and the opposite sides of the two connecting disks 213 and extend to the outside of the two connecting disks 213, and the connecting shaft 1 hinges the left shell 211 and the right shell 212 together through the fixed disk 214 and the two connecting disks 213 for easy clamping on the wires, the top and bottom ends of the right iron core 216 both penetrate the interior of the right arc groove 215 and extend to the outside of the right arc groove 215, the top and bottom ends of the left iron core 219 both penetrate the interior of the left arc groove 218 and extend to the outside of the left arc groove 218, and the right iron core 216 and the left iron core 219 are tightly together to form a complete magnetic circuit, so as to detect the change of magnetic flux in the entire magnetic circuit.

[0031] The amount of electrical current can be detected by the movable plate 226 and the spring 229. When in use, pinch the lower ends of the left and right sides of the left shell 211 and the right shell 212 to open the upper ends of the left shell 211 and the right shell 212, then pick up the device through the left shell 211 and the right shell 212 so that the wire is located between the left shell 211 and the right shell 212, then close the left shell 211 and the right shell 212 so that the right iron core 216 and the left iron core 219 are tightly together, and then fix the position of the left shell 211 and the right shell 212 through the stop assembly 22. At this time, a complete magnetic circuit is formed through the right iron core 216 and the left iron core 219 to detect the current through the right coil 217 and the left coil 2110, which has good practicality.

[0032] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0033] When in use, the user pinches the lower ends of the left and right sides of the left shell 211 and the right shell 212 to open the upper ends of the left shell 211 and the right shell 212, then picks up the device through the left shell 211 and the right shell 212 so that the wire is located between the left shell 211 and the right shell 212, then closes the left shell 211 and the right shell 212 so that the right iron core 216 and the left iron core 219 are tightly together, then rotates the stop frame 222 to the right so that the clamping rod 223 is tightly against the bottom surface of the L-shaped plate 225, and then presses the stop frame 222 to drive the clamping rod 223 to move the L-shaped plate 225. 25 is pushed open so that the clamping rod 223 is located on the inner side of the L-shaped plate 225, and then the clamping rod 223 is clamped in the inside of the clamping slot 224. At this time, the elastic force of the spring 229 can push the movable plate 226 to move to the left, and then the movable plate 226 will drive the L-shaped plate 225 through the clamping slot 224 to make the clamping rod 223 tightly clamped in the inside of the clamping slot 224, so as to fix the positions of the left shell 211 and the right shell 212. At this time, a complete magnetic circuit is formed through the right iron core 216 and the left iron core 219 to detect the magnitude of the current through the right coil 217 and the left coil 2110.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include"-"comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process-method-article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process-method-article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special-shaped clamp-on current transformer for preventing accidental opening, comprising a connecting shaft (1), characterized in that: A current mutual induction mechanism (2) is arranged on the outer side of the connecting shaft (1) and is used to be clamped on the outer side of the electric wire to measure the current magnitude of the electric wire. The current mutual induction mechanism (2) comprises: A test assembly (21) is arranged outside the connecting shaft (1) and is used to measure the current of the electric wire. The test assembly (21) comprises a right housing (212) movably mounted on the right side of the connecting shaft (1), a left housing (211) movably mounted on the left side of the connecting shaft (1), two connecting disks (213) are fixedly mounted on the bottom surface of the left side of the right housing (212), and a fixed disk (214) is fixedly mounted on the right side of the left housing (211); A stop assembly (22) is arranged on the bottom surface of the left shell (211) and is used to clamp the device on the outside of the electric wire. The stop assembly (22) includes a connecting plate (221) fixedly installed on the front and rear sides of the bottom of the left shell (211). A stop frame (222) is movably installed on the opposite side of the connecting plate (221). A clamping rod (223) is fixedly installed on the inner side of the stop frame (222). The bottom surface of the right shell (212) is provided with a clamping assembly for fixing the position of the stop frame (222) so that the test assembly (21) can be closed.

2. The anti-misoperation special-shaped clamp-on current transformer according to claim 1, characterized in that: The clamping assembly comprises a movable groove (227) provided on the bottom surface of the connecting plate (213); a movable plate (226) is movably installed inside the movable groove (227); an L-shaped plate (225) is fixedly installed on the left side of the bottom surface of the movable plate (226); a handle (228) is fixedly installed on the right side of the bottom surface of the movable plate (226); two limiting rods (2210) are fixedly installed inside the movable groove (227); springs (229) are movably sleeved on the outer sides of the two limiting rods (2210); and a clamping groove (224) is provided on the inner side of the L-shaped plate (225).

3. The anti-misoperation special-shaped clamp-on current transformer according to claim 2, characterized in that: The left ends of the front and rear sides of the stop frame (222) are movably mounted on the opposite sides of the connecting plate (221), and the outer side of the clamping rod (223) is tightly attached to the inner side of the clamping slot (224).

4. The anti-misoperation special-shaped clamp-on current transformer according to claim 2, characterized in that: The left ends of the two limit rods (2210) are movable and penetrate the right side of the movable plate (226) and are fixedly installed on the left side of the inner cavity of the movable groove (227); the left end of the spring (229) is tightly attached to the right side of the movable plate (226); and the right end of the spring (229) is fixedly installed on the right side of the inner cavity of the movable groove (227).

5. The anti-misoperation special-shaped clamp-on current transformer according to claim 1, characterized in that: The test assembly (21) further comprises a right arc groove (215) provided inside the right shell (212), a right iron core (216) being fixedly installed inside the right arc groove (215), a right coil (217) being fixedly installed outside the right iron core (216), a left arc groove (218) being provided inside the left shell (211), a left iron core (219) being fixedly installed inside the left arc groove (218), a left coil (2110) being fixedly installed outside the left iron core (219), front and rear sides of the fixed disk (214) being tightly attached to opposite sides of the two connecting disks (213), and front and rear sides of the connecting shaft (1) being movable through the interior of the fixed disk (214) and opposite sides of the two connecting disks (213) and extending to the outsides of the two connecting disks (213).

6. The mis-opening-proof special-shaped clamp-on current transformer according to claim 5, characterized in that: The top and bottom ends of the right iron core (216) both penetrate the interior of the right arc groove (215) and extend to the outside of the right arc groove (215), and the top and bottom ends of the left iron core (219) both penetrate the interior of the left arc groove (218) and extend to the outside of the left arc groove (218).

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