Electric power system load monitoring device capable of preventing overload damage

Abstract

The utility model is applied to the technical field of electric power automation, and discloses an anti-overload damage electric power system load monitoring device which comprises a bottom shell, an upper cover is fixedly installed at the upper end of the bottom shell through bolts, a center motor is fixedly installed in the lower end of the bottom shell, and a center rod is fixedly connected to the upper end of an output shaft of the center motor. And a sliding switching disc is installed at the upper end of the center rod, and a communication base is fixedly installed in the side surface of the switching disc. According to the electric power system load monitoring device capable of preventing overload damage, the temperature change at the fuse can be accurately monitored through the infrared temperature control switch, the infrared temperature control switch can timely capture the temperature abnormity due to the fact that the temperature of the fuse is rapidly increased when current overload occurs, and compared with a traditional monitoring device, the overload damage can be prevented; the overload detection sensitivity is greatly improved, the abnormal change of the load can be perceived at the first time, and precious time is won for taking protective measures in time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric power automation, specifically to an electric power system load monitoring device of preventing overload damage. BACKGROUND

[0002] In today's power system, the stable operation of the load is crucial to the reliability and safety of the whole system, with the continuous growth of power demand and the wide application of various complex electrical equipment, the overload of the power system load occurs from time to time, once overload occurs, not only may cause the damage of electrical equipment, affect the normal production and life order, serious even may cause fire and other safety accidents, bring great threat to people's life and property;

[0003] At present, there are various electric power system load monitoring devices on the market, however, these traditional devices have some limitations, for example, the detection sensitivity of some monitoring devices for overload is low, which cannot timely and accurately detect the abnormal change of the load, so that effective protection measures cannot be taken in the first time, some devices have single protection mechanism when dealing with overload, only rely on simple fuse to cut off the circuit, although this way can prevent further damage caused by overload to a certain extent, but after the fuse is fused, manual replacement is needed, in some narrow operation positions or positions difficult to reach for maintenance personnel, may cause long time power failure, affect the continuity of power supply, in addition, the adaptability of traditional devices to different loads is poor, it is difficult to flexibly adjust the monitoring and protection strategy according to the actual demand. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an electric power system load monitoring device of preventing overload damage to solve the problems of low overload detection sensitivity, single protection mechanism and poor adaptability to different loads of traditional devices in the above background technology.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: an electric power system load monitoring device of preventing overload damage, including bottom shell, the upper end of bottom shell is installed with upper cover through bolt fixing, the lower end inside fixed mounting of bottom shell has center motor, the output shaft upper end of center motor is fixedly connected with center rod, and the upper end of center rod is installed with sliding switch disc, the side surface inside fixed mounting of switch disc has communication seat, and the inside card of communication seat is installed with fuse, and the communication lead between 2 communication seats is connected;

[0006] The inner side surface of the bottom shell is provided with a sliding sliding rod, and the end of the sliding rod towards the inside of the bottom shell is fixedly connected with a contact sheet, the outer side surface of the bottom shell is fixedly provided with an external connector, and the transmission wire is connected between the external connector and the sliding rod, and one end of the transmission wire is electrically connected with the contact sheet, and the lower surface of one end of the sliding rod is fixedly provided with a reset plate.

[0007] The inner top surface of the upper cover is fixedly provided with an infrared temperature control switch, the lower end of the bottom shell is fixedly installed with an electric push rod, and the upper end of the electric push rod is fixedly connected with a rotating ring.

[0008] Preferably, the outer side surface of the switching disc is in contact with the inner side surface of the bottom shell, and the switching disc and the bottom shell are concentrically arranged, and a gap is left between the upper end surface of the switching disc and the inner top surface of the upper cover.

[0009] The above technical scheme ensures that the switching disc can stably rotate in the bottom shell, and the concentric arrangement makes the switching disc rotate uniformly, avoiding shaking or deviation, which affects the cooperation with other components. At the same time, the gap between the switching disc and the upper cover provides space for the lifting of the switching disc, preventing friction or collision with the upper cover during lifting, and ensuring the reliability of the device operation.

[0010] Preferably, the contact sheet is designed in a C shape with both ends bent outwardly to the outside of the bottom shell, and the outer surface of the middle section of the contact sheet is in contact with one end of the fuse.

[0011] The C-shaped contact sheet can better fit the fuse, and the design of bending both ends outwardly facilitates the installation and removal of the fuse, and on the other hand, after the fuse is melted, the contact sheet can be easily separated from the melted fuse, facilitating the switching to a new fuse, and ensuring smooth switching of the circuit.

[0012] Preferably, the reset plate is in sliding connection with the bottom shell, and a spring is connected between the reset plate and the bottom shell.

[0013] The sliding connection of the reset plate with the bottom shell and the spring provide that the contact sheet can reset in time after the fuse is melted, ensuring that the contact sheet can quickly and closely fit the new fuse when switching, restoring the circuit connection, and the spring provides a force to ensure that the contact sheet and the fuse always maintain a certain pressure, preventing poor contact due to vibration or other factors, and improving the stability and reliability of the circuit connection.

[0014] Preferably, the lower end of the infrared temperature control switch is opposite the fuse, the rotating ring is located inside the lower surface of the switching disc, the rotating ring is in rotating connection with the switching disc, the lower end of the rotating ring penetrates the lower surface of the switching disc, and the lower end of the switching disc is designed in a circular truncated cone shape with the upper end larger than the lower end.

[0015] With the above technical scheme, the infrared temperature control switch is opposite to the fuse, can accurately monitor the temperature change of the fuse, and timely discovers the overload condition, and the rotary connection of the rotating ring and the switching disc and the circular table design of the lower end of the switching disc enable the contact piece to be squeezed and the contact piece to slide when the electric push rod drives the rotating ring to descend.

[0016] Compared with the prior art, the power system load monitoring device for preventing overload damage has the advantages that:

[0017] 1. The infrared temperature control switch can accurately monitor the temperature change at the fuse, and since the temperature of the fuse rapidly rises when the current is overloaded, the infrared temperature control switch can timely capture this temperature anomaly, greatly improving the detection sensitivity to overload compared with the traditional monitoring device, and it can perceive the abnormal change of the load in the first time, thereby gaining valuable time for timely taking protective measures.

[0018] 2. Unlike the single protection mode relying on the fuse in the prior art, in addition to the fuse being blown to cut off the circuit when the current is too large, the device is also equipped with an electric push rod, a rotating ring and other structures, and when the infrared temperature control switch detects an overload signal, the electric push rod can be controlled to act, the switching disc is driven to rotate by the rotating ring, and the spare communication seat and the fuse are switched to, so that the automatic switching of the circuit is realized, manual replacement of the fuse is not needed, the protection capability when the overload occurs is greatly improved, the continuity of power supply is ensured, the influence of power failure on the production and life order is reduced, and the device is especially suitable for positions with narrow operation space or positions difficult for maintenance personnel to reach, thereby avoiding the inconvenience of manual replacement of the fuse.

[0019] 3. The switching disc side surface in the device is internally fixedly installed with a plurality of communication seats and fuses, the center rod can be driven by the center motor to make the switching disc slide and rotate, the appropriate communication seat and fuse combination are selected to be connected to the circuit, so that the effective monitoring and protection of different load conditions are realized, the adaptability to various complex electrical equipment and different load scenes is significantly improved, the actual demand can be better met, and the stability and safety of the power system are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole three-dimensional structure schematic view of the utility model;

[0021] Figure 2 It is a three-dimensional structure schematic view of the bottom shell, upper cover and switching disc connection section view of the utility model;

[0022] Figure 3 It is a whole section view three-dimensional structure schematic view of the utility model;

[0023] Figure 4The utility model discloses a switching disc and rotating ring connection cut surface three-dimensional structure schematic diagram.

[0024] Figure 5 The utility model discloses bottom shell and contact sheet connection three-dimensional structure schematic diagram.

[0025] Figure 6 The utility model discloses switching disc three-dimensional structure schematic diagram.

[0026] In the drawing: 1, bottom shell, 2, upper cover, 3, center motor, 4, center rod, 5, switching disc, 6, communication seat, 7, fuse, 8, communication wire, 9, sliding rod, 10, contact sheet, 11, external connector, 12, transmission wire, 13, reset board, 14, infrared temperature control switch, 15, electric push rod, 16, rotating ring. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts fall within the protection scope of the utility model.

[0028] Please refer to Figures 1-6 The utility model provides a kind of technical scheme: an overload damage prevention electric power system load monitoring device.

[0029] Embodiment one

[0030] Disclosed in this embodiment: bottom shell 1, the upper end of bottom shell 1 is fixedly installed with upper cover 2 by bolt, the lower end of bottom shell 1 is fixedly installed with center motor 3 in inside, the output shaft upper end of center motor 3 is fixedly connected with center rod 4, and the upper end of center rod 4 is installed with sliding switching disc 5, the side surface of switching disc 5 is fixedly installed with communication seat 6 in inside, and fuse 7 is clamped and installed in the inside of communication seat 6, and the communication wire 8 is connected between two communication seats 6;

[0031] The outside surface of switching disc 5 is attached with the inside surface of bottom shell 1, and switching disc 5 and bottom shell 1 are concentrically arranged, and the upper end surface of switching disc 5 and the inside top surface of upper cover 2 are left with gap;

[0032] When the center motor 3 is powered on, its output shaft drives the center rod 4 to rotate. Since the switching disc 5 is installed on the center rod 4, the center rod 4 will drive the switching disc 5 to rotate in the bottom shell 1 when the center rod 4 rotates. The fuse 7 is installed in the communication seat 6 on the side surface of the switching disc 5. The different communication seats 6 are connected by the communication wires 8. When different fuses 7 need to be switched to adapt to different loads, the center motor 3 drives the center rod 4 to make the switching disc 5 slide and rotate, and adjusts the appropriate communication seat 6 and fuse 7 combination to the working position, so that the current flows through the selected fuse 7 through the communication wire 8, realizing the adaptation to different loads. The upper cover 2 can be opened by removing the bolts between the bottom shell 1 and the upper cover 2 to replace the fuses 7 on the side surface of the switching disc 5.

[0033] Example two

[0034] This embodiment is based on example one. The inner side surface of the bottom shell 1 is provided with a sliding sliding rod 9, and the end of the sliding rod 9 towards the inside of the bottom shell 1 is fixedly connected with a contact sheet 10. The outer side surface of the bottom shell 1 is fixedly provided with an external connector 11, and the external connector 11 and the sliding rod 9 are connected by a transmission wire 12, and one end of the transmission wire 12 is electrically connected with the contact sheet 10. One end of the sliding rod 9 is fixedly provided with a reset plate 13 on the lower surface.

[0035] The contact sheet 10 is designed in C shape with both ends bending outwardly from the bottom shell 1, and the outer surface of the middle section of the contact sheet 10 is in contact with one end of the fuse 7.

[0036] The reset plate 13 is in sliding connection with the bottom shell 1, and the reset plate 13 and the bottom shell 1 are connected by a spring.

[0037] The current flows from the external connector 11 through the transmission wire 12 to the contact sheet 10 connected with the sliding rod 9. The contact sheet 10 is specially designed in C shape with both ends bending outwardly from the bottom shell 1, and the outer surface of the middle section is in contact with one end of the fuse 7, so that the current is smoothly transmitted to the fuse 7. In normal working condition, the current is stable, and the contact sheet 10 maintains good contact with the fuse 7. If an abnormality occurs in the circuit, such as overcurrent leading to the fuse 7 being blown, when the switching disc 5 rotates to switch the fuse 7, the contact sheet 10 will move with the sliding rod 9 at this time due to the loss of support from the fuse 7. At the same time, the spring connected between the reset plate 13 and the bottom shell 1 will provide a reset force to the sliding rod 9 and the contact sheet 10. When the new fuse 7 is rotated to the contact sheet 10, the contact sheet 10 is pressed to drive the sliding rod 9 to slide, and the spring connected between the reset plate 13 and the bottom shell 1 is stretched and ensures the contact sheet 10 and the fuse 7 to be closely contacted by the elastic force.

[0038] Example three

[0039] The embodiment is disclosed on the basis of embodiment one and embodiment two: the inner top surface of the upper cover 2 is fixedly provided with an infrared temperature control switch 14, the lower end of the bottom shell 1 is fixedly installed with an electric push rod 15, and the upper end of the electric push rod 15 is fixedly connected with a rotating ring 16;

[0040] The lower end of the infrared temperature control switch 14 is opposite to the fuse 7, the rotating ring 16 is located in the inner bottom surface of the switching disc 5, the rotating ring 16 is rotationally connected with the switching disc 5, and the lower end of the rotating ring 16 penetrates through the lower surface of the switching disc 5, and the lower end of the switching disc 5 is designed as a circular truncated cone with a large upper end and a small lower end;

[0041] The infrared temperature control switch 14 monitors the temperature at the fuse 7 at all times, when the circuit is overloaded, the current increases, the temperature of the fuse 7 rapidly rises, the infrared temperature control switch 14 detects that the temperature abnormally rises, that is, it is judged as an overload condition, and then sends a signal to control the electric push rod 15 to start, the electric push rod 15 extends upward, drives the rotating ring 16 connected thereto to rise, the rotating ring 16 is rotationally connected with the switching disc 5 and penetrates through the lower surface of the switching disc 5, and the lower end of the switching disc 5 is designed as a circular truncated cone with a large upper end and a small lower end, this structure enables the rotating ring 16 to push the switching disc 5 to rise when the rotating ring 16 rises, then after a preset time, the center motor 3 drives the switching disc 5 to rotate first so that the fuse 7 is dislocated with the contact piece 10, then the electric push rod 15 drives the switching disc 5 to descend and reset, at this time, the switching disc 5 is pressed against the contact piece 10 through the inclined surface of the lower end of the circular truncated cone, so that the contact piece 10 can retract, at this time, the switching disc 5 is driven to rotate again, and the standby communication seat 6 and the fuse 7 are switched to the working position to replace the blown fuse 7, so as to realize automatic switching of the circuit and maintain the continuity of power supply.

[0042] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A power system load monitoring device for preventing overload damage, comprising a base shell (1), wherein a top cover (2) is fixedly installed on the upper end of the base shell (1) by bolts, and a central motor (3) is fixedly installed inside the lower end of the base shell (1), characterized in that: The output shaft of the central motor (3) is fixedly connected to a central rod (4), and a sliding switching disk (5) is installed on the upper end of the central rod (4). A connecting seat (6) is fixedly installed inside the side surface of the switching disk (5), and a fuse (7) is engaged inside the connecting seat (6). A connecting wire (8) is connected between the two connecting seats (6).

2. The power system load monitoring device for preventing overload damage according to claim 1, characterized in that: A sliding rod (9) is installed on the inner surface of the bottom shell (1), and a contact piece (10) is fixedly connected to one end of the sliding rod (9) facing the inside of the bottom shell (1). An external connector (11) is fixedly provided on the outer surface of the bottom shell (1), and a transmission wire (12) is connected between the external connector (11) and the sliding rod (9). One end of the transmission wire (12) is electrically connected to the contact piece (10). A reset plate (13) is fixedly provided on the lower surface of one end of the sliding rod (9).

3. The power system load monitoring device for preventing overload damage according to claim 1, characterized in that: An infrared temperature control switch (14) is fixedly installed on the inner top surface of the upper cover (2), and an electric push rod (15) is fixedly installed inside the lower end of the bottom shell (1), with a rotating ring (16) fixedly connected to the upper end of the electric push rod (15).

4. The power system load monitoring device for preventing overload damage according to claim 1, characterized in that: The outer surface of the switching disk (5) is in contact with the inner surface of the bottom shell (1), and the switching disk (5) and the bottom shell (1) are concentrically arranged, and there is a gap between the upper end surface of the switching disk (5) and the inner top surface of the top cover (2).

5. A power system load monitoring device for preventing overload damage according to claim 2, characterized in that: The contact piece (10) is a C-shaped design with both ends bent outwards from the bottom shell (1), and the outer surface of the middle section of the contact piece (10) is in contact with one end of the fuse (7).

6. A power system load monitoring device for preventing overload damage according to claim 2, characterized in that: The reset plate (13) is slidably connected to the bottom shell (1), and a spring is connected between the reset plate (13) and the bottom shell (1).

7. A power system load monitoring device for preventing overload damage according to claim 3, characterized in that: The lower end of the infrared temperature control switch (14) is positioned directly opposite the fuse (7). The rotating ring (16) is located inside the lower surface of the switching disk (5), and the rotating ring (16) and the switching disk (5) are rotatably connected. The lower end of the rotating ring (16) penetrates the lower surface of the switching disk (5). The lower end of the switching disk (5) is a frustum-shaped design with a larger upper part and a smaller lower part.

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