Current stability monitoring device convenient to use

Abstract

The utility model relates to the field of current monitoring equipment, in particular to a current stability monitoring device convenient to use, which is used for monitoring current flowing out of an air switch in an electrical cabinet and comprises a three-hole type open current transformer connected with a wire fixing assembly used for fixing a wire; the three-hole type open current transformer comprises a first transformer body and a second transformer body, three first arc-shaped grooves are formed in the first transformer body, three second arc-shaped grooves corresponding to the first arc-shaped grooves are formed in the second transformer body, the three-hole type open current transformer further comprises a hinge piece and a locking piece, one end of the first transformer body is connected with one end of the second transformer body through the hinge piece, and the other end of the first transformer body is connected with the locking piece through the locking piece. The other end of the first mutual inductor body is detachably connected with the other end of the second mutual inductor body through a locking piece. According to the utility model, the structure is reasonable, the construction operation space and the construction workload are reduced, the wire is prevented from being pulled by external force through the use of the wire fixing assembly, and the use stability of the power supply system is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of current monitoring devices, in particular to a current stability monitoring device with convenient use. Background Art

[0002] In multiple fields such as power systems, industrial automation, transportation, and construction, there is a large demand for electricity. Stable current provides important support for the stable operation of the power supply system, the safety protection of equipment, and the effective management of energy. Therefore, current transformers need to be used in the power supply system to monitor the current in real time. The current transformer is installed in the electrical box, and after the wire drawn from the air switch passes through the inner hole of the current transformer, the current flowing through the wire can be monitored in real time. Publication (Announcement) No.: CN219979259U discloses a combined current transformer, including: a lower housing and an upper housing. A transformer winding is arranged inside the lower housing and the upper housing. The upper housing is rotatably connected to the inner side of the lower housing by a rotating shaft. A clamping strip is arranged at one end of the upper housing, and a clamping groove is arranged on the surface of the lower housing. The clamping strip is clamped inside the clamping groove. In the utility model, the connection between the upper housing and the lower housing of the transformer is facilitated by clamping the clamping strip inside the clamping groove. The upper housing of the transformer can be rotated upward to be opened by pushing the clamping strip away from the inner wall of the clamped clamping groove by the abutting block, thereby facilitating the opening and closing use between the upper housing and the lower housing of the transformer; the elastic pushing of the first conductive spring and the second conductive spring enables the first conductive block and the second conductive block to be closely attached together, which can prevent the transformer from having poor contact.

[0003] The above prior art solutions have the following defects: The inventor found that the above combined current transformer can only monitor the current of a single wire in real time. When monitoring three-phase electricity in real time, usually three combined current transformers are respectively installed in the electrical box. After three wires respectively pass through the corresponding combined current transformers, the combined current transformers monitor the current flowing through the wires. However, when installing three combined current transformers, a certain amount of operating space for construction needs to be left around each combined current transformer, thereby reducing the utilization rate of the space inside the electrical box. In addition, the repetitive installation of three combined current transformers increases the workload of construction. Moreover, the combined current transformer does not have the function of fixing the wire, so when the wire is pulled by an external force, the wire is easily disconnected from the air switch, reducing the use stability of the power supply system. Summary of the Utility Model

[0004] The main technical problem to be solved by the utility model is to provide a current stability monitoring device with convenient use, which reduces the operating space and workload of construction. By using the wire fixing component, the external force pulling the wire is blocked, and the use stability of the power supply system is enhanced.

[0005] To solve the above technical problems, a technical solution adopted by the present utility model is: to provide a current stability monitoring device with convenient use, which is used to monitor the current flowing out of the air switch in the electrical box, including: a three-hole open current transformer, the three-hole open current transformer can simultaneously pass through three wires for monitoring the current, and a wire fixing component for fixing the wires is connected to the three-hole open current transformer;

[0006] The three-hole open current transformer includes a first transformer body and a second transformer body. Three arc-shaped grooves I are provided on the first transformer body, and three arc-shaped grooves II corresponding to the arc-shaped grooves I are provided on the second transformer body. It also includes a hinge piece and a locking piece. One end of the first transformer body is connected to one end of the second transformer body through the hinge piece, and the other end of the first transformer body is detachably connected to the other end of the second transformer body through the locking piece.

[0007] By adopting the above technical solution, during use, the current monitoring device of the present application is installed in the electrical box. The three wires led out from the air switch in the electrical box respectively pass through the arc-shaped grooves I on the first transformer body. Since one end of the first transformer body is connected to one end of the second transformer body through the hinge piece, the second transformer body is swung to contact the first transformer body, so that the arc-shaped grooves II are located outside the wires. Since the other end of the first transformer body is detachably connected to the other end of the second transformer body through the locking piece, the locking piece is operated to make the first transformer body and the second transformer body in close contact. The first transformer body and the second transformer body interact with each other, so that when current passes through the wires, an induced current will be generated and the induced current will be converted into a measurable voltage signal. The external control system is electrically connected to the monitoring device of the present application, so that the external control system can display the real-time parameters of the current flowing through the wires, without using three independent current transformers to monitor the current in the three wires respectively, thereby reducing the operation space and workload of the construction, improving the space utilization rate in the electrical box, and the wire fixing component can fix the wires led out from the air switch, thus preventing the wires from being pulled by external forces and causing them to disconnect from the air switch, enhancing the use stability of the power supply system.

[0008] In a preferred example, the present utility model can be further configured as: the wire fixing component includes a fixing plate connected to the second transformer body, three arc-shaped support seats corresponding to the arc-shaped grooves II are connected to the fixing plate, arc-shaped pressing plates are respectively arranged behind the arc-shaped support seats, two screw rods are respectively connected to both ends of the arc-shaped pressing plates, and the ends of the screw rods pass through the fixing plate and are threadedly connected with nuts.

[0009] By adopting the above technical solution, the wires connected from the circuit breaker pass through the inner cavity of the arc-shaped support seat, and then the arc-shaped pressure plate is pressed on the outer surface of the wires. After the screw on the arc-shaped pressure plate passes through the fixing plate, the nut is rotated so that the arc-shaped support seat and the arc-shaped pressure plate are in close contact with the wires respectively, thereby fixing the wires and preventing external force from pulling the wires to separate them from the circuit breaker.

[0010] In a preferred example, the utility model can be further configured as follows: the hinged member includes a rotating seat and hinged plates arranged at both ends thereof, a hinge shaft is passed through the rotating seat, both ends of the hinge shaft pass through the corresponding hinged plates and are rotatably connected, the hinged plate is connected to the first transformer body, and the rotating seat is connected to the second transformer body.

[0011] By adopting the above technical solution, the rotating seat is rotatably connected to the hinge plate through the hinge shaft, which facilitates the rotation of the transformer body 2 along the hinge shaft, so that the transformer body 1 and the transformer body 2 can achieve the purpose of hinge connection.

[0012] In a preferred example, the utility model can be further configured as follows: the locking member includes a locking plate 1 and a locking plate 2, the locking plate 1 is connected to the transformer body 1, the locking plate 2 is connected to the transformer body 2, bolts are passed through the locking plate 1 and the locking plate 2, and nuts are spirally connected to the ends of the bolts.

[0013] By adopting the above technical solution, after the transformer body 1 and the transformer body 2 are fitted together, the bolt is passed through the locking plate 1 and the locking plate 2, and then the nut is screwed on the bolt and in close contact with the locking plate 2, so that the transformer body 1 and the transformer body 2 are tightly connected.

[0014] In a preferred example, the utility model can be further configured as follows: the inner wall of the arc-shaped groove 1 is respectively connected with a rubber sheet, and the inner wall of the arc-shaped groove 2 is respectively connected with the rubber sheet.

[0015] By adopting the above technical solution and using the rubber sheet, the wear of the arc groove 1 and the arc groove 2 on the wire can be reduced, thereby playing a protective role.

[0016] In a preferred example, the utility model can be further configured as follows: the transformer body 1 includes a shell 1 and three transformer windings, the transformer windings are spaced apart in the inner cavity of the shell 1 and are adapted to the corresponding arc-shaped slot 1, and the transformer body 2 includes a shell 2 and the three transformer windings, the transformer windings are spaced apart in the inner cavity of the shell 2 and are adapted to the corresponding arc-shaped slot 2.

[0017] By adopting the above technical solution, each wire is threaded between two windings of the current transformer. When current flows through the wire, an induced current will be generated, and the induced current will be converted into a measurable voltage signal. The external control system is electrically connected to the monitoring device of the present application, so that the external control system can display the real-time parameters of the current flowing through the wire.

[0018] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0019] 1. The three wires of the three-phase electricity are respectively threaded into the first arc-shaped groove of the first current transformer body. After the second current transformer body swings and is connected to the first current transformer body, the first current transformer body and the second current transformer body interact with each other, so that when current passes through the wire, an induced current will be generated and the induced current will be converted into a measurable voltage signal. The external control system is electrically connected to the monitoring device of the present application, so that the external control system can display the real-time parameters of the current flowing through the wire, without the need to use three independent current transformers to monitor the current in the three wires respectively, thereby reducing the operation space and workload of the construction and improving the space utilization rate inside the electrical box.

[0020] 2. The wire fixing assembly can fix the wires led out from the air switch, thereby preventing the wires from being pulled by external forces and causing them to disconnect from the air switch, enhancing the use stability of the power supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, where:

[0022] Figure 1 is a schematic structural diagram of a preferred embodiment of a current stability monitoring device with convenient use of the present utility model.

[0023] Figure 2 is Figure 1 a schematic structural diagram of the three-hole open current transformer in

[0024] Figure 3 is Figure 1 a schematic structural diagram of the wire fixing assembly in

[0025] Figure 4 is Figure 2 a sectional view of the first current transformer body in

[0026] Figure 5 is Figure 2 a sectional view of the second current transformer body in

[0027] Figure 6 It is a schematic diagram of the installation position of the monitoring device inside the electrical box.

[0028] In the figure: 10, three-hole open current transformer; 20, wire fixing component; 3, rubber sheet;

[0029] 11, transformer body one; 12, transformer body two; 13, arc-shaped groove one; 14, arc

[0030] shaped groove two; 15, hinge; 16, locking piece;

[0031] 111, housing one; 112, transformer winding; 121, housing two;

[0032] 151, rotating seat; 152, hinge plate; 153, hinge shaft;

[0033] 161, locking plate one; 162, locking plate two;

[0034] 21, fixing plate; 22, arc-shaped support seat; 23, screw; 24, arc-shaped pressing plate. Specific embodiments

[0035] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not intended to limit the present invention.

[0036] It should be noted that these drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner. Therefore, they only show the components related to the present invention.

[0037] Refer to Figures 1 to 6 , a current stability monitoring device with convenient use disclosed by the present invention, which is used to monitor the current flowing out of the electrical box through the air switch, and includes: a three-hole open current transformer 10, the three-hole open current transformer 10 can simultaneously pass through three wires for monitoring the current, and a wire fixing component 20 for fixing the wires is connected to the three-hole open current transformer 10; the monitoring device is fixed inside the electrical box. After the three wires of the three-phase electricity pass through the three-hole open current transformer 10, the three-hole open current transformer 10 monitors the current flowing through the wires in real time.

[0038] The three-hole open current transformer 10 includes a transformer body one 11 and a transformer body two 12. Three arc-shaped grooves one 13 are provided on the transformer body one 11, and three arc-shaped grooves two 14 corresponding to the arc-shaped grooves one 13 are provided on the transformer body two 12. It also includes a hinge member 15 and a locking member 16. One end of the transformer body one 11 is connected to one end of the transformer body two 12 through the hinge member 15. The hinge member 15 includes a rotating seat 151 and hinge plates 152 provided at both ends thereof. A hinge shaft 153 is passed through the rotating seat 151. Both ends of the hinge shaft 153 pass through the corresponding hinge plates 152 and are rotatably connected. The hinge plates 152 are connected to the transformer body one 11, and the rotating seat 151 is connected to the transformer body two 12. The rotating seat 151 is rotatably connected to the hinge plates 152 through the hinge shaft 153, which facilitates the rotation of the transformer body two 12 along the hinge shaft 153, so as to achieve the purpose of hinge connection between the transformer body one 11 and the transformer body two 12.

[0039] The other end of the transformer body one 11 is detachably connected to the other end of the transformer body two 12 through the locking member 16. The locking member 16 includes a locking plate one 161 and a locking plate two 162. The locking plate one 161 is connected to the transformer body one 11, and the locking plate two 162 is connected to the transformer body two 12. A bolt is passed through the locking plate one 161 and the locking plate two 162, and a nut is screwed on the end of the bolt. After the transformer body one 11 and the transformer body two 12 are fitted together, the bolt is passed through the locking plate one 161 and the locking plate two 162, and then the nut is screwed on the bolt, so that the transformer body one 11 and the transformer body two 12 are tightly connected.

[0040] The wire fixing assembly 20 includes a fixing plate 21 connected to the transformer body two 12. Three arc-shaped supporting seats 22 corresponding to the arc-shaped grooves two 14 are connected to the fixing plate 21. Arc-shaped pressing plates are respectively provided behind the arc-shaped supporting seats 22. Two screw rods 23 are respectively connected to both ends of the arc-shaped pressing plates. The ends of the screw rods 23 pass through the fixing plate 21 and are threadedly connected with nuts. The wire led out from the air switch passes through the inner cavity of the arc-shaped supporting seat 22, and then the arc-shaped pressing plate 24 is pressed on the outer surface of the wire. After the screw rod 23 on the arc-shaped pressing plate 24 passes through the fixing plate 21, the nut is rotated so that the arc-shaped supporting seat 22 and the arc-shaped pressing plate 24 are respectively in close contact with the wire, thereby playing a role in fixing the wire and preventing the external force from pulling the wire to separate it from the air switch.

[0041] Rubber sheets 3 are respectively connected to the inner walls of the arc-shaped grooves one 13, and the rubber sheets 3 are respectively connected to the inner walls of the arc-shaped grooves two 14. By using the rubber sheets 3, the arc-shaped grooves one 13 and the arc-shaped grooves two 14 are prevented from causing excessive wear to the wire, playing a protective role.

[0042] The current transformer body 11 includes a housing 111 and three current transformer windings 112. The current transformer windings 112 are arranged at intervals in the inner cavity of the housing 111 and are adapted to the corresponding arc-shaped grooves 13. The current transformer body 12 includes a housing 121 and three of the current transformer windings 112. The current transformer windings 112 are arranged at intervals in the inner cavity of the housing 121 and are adapted to the corresponding arc-shaped grooves 14. Each wire is threaded between two current transformer windings 112. When an electric current flows through the wire, an induced current will be generated, and the induced current will be converted into a measurable voltage signal. The external control system is electrically connected to the monitoring device of the present application, so that the external control system can display the real-time parameters of the current flowing through the wire.

[0043] The implementation principle of this embodiment is as follows: When in use, the current monitoring device of the present application is installed in the electrical box. The three wires led out from the air switch in the electrical box respectively pass through the arc-shaped grooves 13 on the current transformer body 11. Since one end of the current transformer body 11 is connected to one end of the current transformer body 12 through a hinge 15, the current transformer body 12 is swung to abut against the current transformer body 11, so that the arc-shaped groove 14 is located outside the wire. Since the other end of the current transformer body 11 is detachably connected to the other end of the current transformer body 12 through a locking member 16, the locking member 16 is operated so that the current transformer body 11 and the current transformer body 12 are in close contact. The current transformer body 11 and the current transformer body 12 interact with each other, so that when an electric current passes through the wire, an induced current will be generated and the induced current will be converted into a measurable voltage signal. The external control system is electrically connected to the monitoring device of the present application, so that the external control system can display the real-time parameters of the current flowing through the wire. There is no need to use three independent current transformers to monitor the current in the three wires respectively, thereby reducing the operation space and workload of the construction, improving the space utilization rate in the electrical box. The wire fixing assembly 20 can fix the wires led out from the air switch, thereby preventing the wires from being pulled by external forces and causing them to disconnect from the air switch, and enhancing the use stability of the power supply system.

[0044] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A convenient current stability monitoring device for monitoring the current flowing out of an electrical box through a circuit breaker, characterized in that: include: A three-hole open-type current transformer (10), wherein three electric wires can be simultaneously passed through the three-hole open-type current transformer (10) for monitoring current, and a wire fixing component (20) for fixing the electric wires is connected to the three-hole open-type current transformer (10); The three-hole open-type current transformer (10) comprises a transformer body (11) and a transformer body (12), wherein the transformer body (11) is provided with three arc-shaped grooves (13), and the transformer body (12) is provided with three arc-shaped grooves (14) corresponding to the arc-shaped grooves (13). The transformer body (10) further comprises a hinge (15) and a locking member (16), wherein one end of the transformer body (11) is connected to one end of the transformer body (12) via the hinge (15), and the other end of the transformer body (11) is detachably connected to the other end of the transformer body (12) via the locking member (16).

2. The convenient current stability monitoring device according to claim 1, characterized in that: The fixed line assembly (20) comprises a fixing plate (21) connected to the transformer body (12); three arc-shaped support seats (22) corresponding to the arc-shaped groove (14) are connected to the fixing plate (21); arc-shaped pressure plates (24) are respectively arranged at the rear of the arc-shaped support seats (22); two ends of the arc-shaped pressure plates (24) are respectively connected to two screw rods (23); the ends of the screw rods (23) pass through the fixing plate (21) and are threadedly connected to nuts.

3. The convenient current stability monitoring device according to claim 1, characterized in that: The hinged member (15) comprises a rotating seat (151) and hinged plates (152) arranged at two ends thereof, a hinged shaft (153) is passed through the rotating seat (151), both ends of the hinged shaft (153) pass through corresponding hinged plates (152) and are rotatably connected, the hinged plates (152) are connected to the transformer body 1 (11), and the rotating seat (151) is connected to the transformer body 2 (12).

4. The convenient current stability monitoring device according to claim 1, characterized in that: The locking member (16) comprises a locking plate 1 (161) and a locking plate 2 (162); the locking plate 1 (161) is connected to the transformer body 1 (11); the locking plate 2 (162) is connected to the transformer body 2 (12); bolts are passed through the locking plate 1 (161) and the locking plate 2 (162); nuts are spirally connected to the ends of the bolts.

5. The convenient current stability monitoring device according to claim 1, characterized in that: The inner walls of the arc-shaped groove one (13) are respectively connected to the rubber sheets (3), and the inner walls of the arc-shaped groove two (14) are respectively connected to the rubber sheets (3).

6. The convenient current stability monitoring device according to claim 1, characterized in that: The transformer body one (11) comprises a shell one (111) and three transformer windings (112), wherein the transformer windings (112) are arranged at intervals in the inner cavity of the shell one (111) and are adapted to the corresponding arc-shaped slot one (13), and the transformer body two (12) comprises a shell two (121) and three transformer windings (112), wherein the transformer windings (112) are arranged at intervals in the inner cavity of the shell two (121) and are adapted to the corresponding arc-shaped slot two (14).

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